22,490 results on '"PCa"'
Search Results
2. Genetic diversity study and estimation of iron and zinc content in red sorghum genotypes (Sorghum bicolor [L.] Moench)
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Vinodhini, Koppeti, Kalaimagal, T., Kavithamani, D., and Senthil, A.
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- 2024
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3. Multivariate analysis in chickpea genotypes under timely sown condition
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Behera, Karishma, Babbar, Anita, Yankanchi, Shrikant, and Vyshnavi, R. G.
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- 2024
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4. An Extensive Computational Investigation of Mycobacterium tuberculosis Pantothenate Synthetase Inhibitors from Diverse‐Lib Compounds Library.
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Imran, Mohd, Abida, Guetat, Arbi, Iradukunda, Patrick Gad, Hudu, Shuaibu Abdullahi, Saramba, Eric, Alzahrani, Abdullah R., Eltaib, Lina, Kamal, Mehnaz, and Dzinamarira, Tafadzwa
- Abstract
Antibiotics have played a crucial role in significantly reducing the incidence of tuberculosis (TB) infection worldwide. Even before the mid‐20th century, the mortality rate of TB onset within five years was around 50 %. So, the introduction of antibiotics has changed the scenario of TB from a serious threat to a manageable one. However, the emergence of resistance to anti‐TB drugs poses a significant challenge. So, to overcome this situation the therapeutic approaches and drug targets need to be reformed. This study focused on finding potential inhibitors by targeting Pantothenate Synthetase, a crucial enzyme for Mycobacterium tuberculosis (Mtb) survival, through computational drug discovery methods. Molecular docking and virtual screening were employed to identify potential inhibitors from Diverse‐lib. Four compounds, namely CID2813602, 24357538, CID753354, and CID4798023, exhibited strong binding energies and stable interaction with the target protein. Further assessment of these compounds through MD simulation and Post MD simulation showed significant dynamic stability. The minimum energy transition calculated using the free energy landscape analysis of these compounds when docked with Pantothenate Synthetase confirmed the stability of each complex due to its minimum energy production. The free binding energy calculation of each complex also showed the intramolecular interaction contributes to the strong binding affinity of the compounds within the enzyme's active site clarifying their mechanisms of action. This research showcases the effectiveness of computational methods in promptly identifying potential anti‐TB drugs, paving the way for future experimental validation and optimization. It holds promise for the development of new treatments targeting drug‐resistant TB strains. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Construction of a cuproptosis-related lncRNA signature to predict biochemical recurrence of prostate cancer.
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ZHAOJUN YU, HUANHUAN DENG, HAICHAO CHAO, ZHEN SONG, and TAO ZENG
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REVERSE transcriptase polymerase chain reaction , *LINCRNA , *PEARSON correlation (Statistics) , *CANCER relapse , *REGRESSION analysis , *PROSTATE cancer - Abstract
Biochemical recurrence (BCR) is common in prostate cancer (PCa), and patients with BCR usually have a poor prognosis. Cuproptosis is a unique type of cell death, and copper homeostasis is crucial to the occurrence and development of malignancies. The present study aimed to explore the prognostic value of cuproptosis-related long non-coding RNAs (lncRNAs; CRLs) in PCa and to develop a predictive signature for forecasting BCR in patients with PCa. Using The Cancer Genome Atlas database, transcriptomic, mutation and clinical data were collected from patients with PCa. A total of 121 CRLs were identified using Pearson's correlation coefficient. Subsequently, a 6-CRL signature consisting of AC087276.2, CNNM3-DT, AC090198.1, AC138207.5, METTL14-DT and LINC01515 was created to predict the BCR of patients with PCa through Cox and least absolute shrinkage and selection operator regression analyses. Kaplan-Meier curve analysis demonstrated that high-risk patients had a low BCR-free survival rate. In addition, there was a substantial difference between the high- and low-risk groups in the immune microenvironment, immune therapy, drug sensitivity and tumor mutational burden. A nomogram integrating the Gleason score, 6-CRL signature and clinical T-stage was established and evaluated. Finally, the expression of signature lncRNAs in PCa cells was verified through reverse transcription-quantitative PCR. In conclusion, the 6-CRL signature may be a potential tool for making predictions regarding BCR in patients with PCa, and the prognostic nomogram may be considered a practical tool for clinical decision-making. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Estimating the changes in mechanically expressible oil in terms of content and quality from ohmic heat treated mustard (Brassica juncea) seeds by Vis–NIR–SWIR hyperspectral imaging.
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Hamad, Rajendra, Chakraborty, Subir Kumar, and Kumar, V. Ajesh
- Abstract
Designed experiments were conducted to investigate the influence of ohmic heating (OH) at varying electric field strength (EFS) and holding time on the recovery of oil from mustard (Brassica juncea) seeds during mechanical expression. Hyperspectral imaging (HSI) in the visible-near infrared (Vis–NIR, 399–1003 nm) and short-wave infrared (SWIR, 895–1712 nm) ranges was used to visualize the change in oil distribution induced by OH on the mustard seeds. OH treatment led to an increase in expression of oil content by 25% as compared to control samples. Chemometric techniques, including partial least squares discriminant analysis (PLS-DA) and partial least squares regression (PLSR), were employed to analyze spectral data and develop models for predicting the enhancement in expressible oil due to OH treatment and its quality in terms of free fatty acids thereof. PLS-DA differentiated OH treated seeds from the control sample for by Vis–NIR and SWIR HSI at 93.0 and 95.8% accuracy, respectively. The variable selection method (iPLS) identified crucial wavelengths with minimal performance loss for accurate prediction. The PLSR model using SWIR HSI data accurately predicted oil content and fatty acid composition (R
2 > 0.92), while Vis–NIR predictions exhibited a lower accuracy (R2 > 0.73). [ABSTRACT FROM AUTHOR]- Published
- 2024
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7. The impact of roasting on oil and chlorophyll contents, bioactive components, antioxidant activity, phenolic and fatty acid component of rapeseeds.
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Ahmed, Isam A. Mohamed, AlJuhaimi, Fahad, Özcan, Mehmet Musa, Uslu, Nurhan, and Albakry, Zainab
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Chlorophyll b quantities of raw (control) and roasted rapeseed samples were specified to be higher than chlorophyll a. Additionally, total phenol, total flavonoid quantities and antioxidant activity (DPPH and FRAP assays) values of roasted powdered and whole rapeseed samples were observed to increase compared to the control. K
232 and K270 values of conventional oven roasted, ground and whole rapeseeds were slightly higher than the results in the microwave. The highest K232 value was observed in oil provided from the sample that was powdered and heat treated in conventional oven. The phenolic constituents of ground and whole rapeseeds were partially higher than those of their oils. The dominant fatty acids of the oils extracted from unroasted and roasted rapeseeds were oleic, linoleic, linolenic and palmitic acids in decreasing order. Oleic acid quantities of the oil provided from powdered and whole rapeseeds roasted in microwave and oven were defined as 62.00 and 61.97% to 61.48 and 62.06%, respectively. The main variables of PC1 for rapeseed were dedected as catechin (0.912), coumaric acid (0.840) and ferulic acid (0.733). [ABSTRACT FROM AUTHOR]- Published
- 2024
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8. A lightweight optimized intrusion detection system using machine learning for edge-based IIoT security.
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Tiwari, Ravi Shekhar, Lakshmi, D., Das, Tapan Kumar, Tripathy, Asis Kumar, and Li, Kuan-Ching
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FISHER discriminant analysis ,PARTICLE swarm optimization ,FEATURE selection ,COMPUTER network security ,INTELLIGENT sensors ,INTRUSION detection systems (Computer security) - Abstract
The Industrial Internet of Things (IIoT) attributes to intelligent sensors and actuators for better manufacturing and industrial operations. At the same time, IIoT devices must be secured from the potentially catastrophic effects of eventual attacks, and this necessitates real-time prediction and preventive strategies for cyber-attack vectors. Due to this, the objective of this investigation is to obtain a high-accuracy intrusion detection technique with a minimum payload. As the experimental process, we have utilized the IIoT network security dataset, namely WUSTL-IIOT-2021. The feature selection technique Particle Swarm Optimization (PSO) and feature reduction techniques such as Principal Component Analysis (PCA), Linear Discriminant Analysis (LDA), and t-distributed stochastic neighbor embedding (t-SNE) are applied. Additionally, the Generalized Additive Model (GAM) and Multivariate Adaptive Regression Splines (MARS) are used to detect payloads that can interfere with the normal operation of an application. Both PSO and PCA combined with MARS have produced predictive results with an exceptional accuracy of 100%. Yet, the trained Machine Learning (ML) model is quantized with 4-bit and 8-bit, and it is deployed on Azure IoT Edge to simulate edge devices. Experimental results show that the latency of the model was reduced by 25% on quantization. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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9. Exploring body morphometry and weight prediction in Ganjam goats in India through principal component analysis.
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Karna, Dillip Kumar, Mishra, Chinmoy, Dash, Susant Kumar, Acharya, Aditya Prasad, Panda, Snehasmita, and Chinnareddyvari, Chandana Sree
- Abstract
The body conformations of 262 adult Ganjam goats were subjected to principal component analysis (PCA) with 11 morphometric variables. The results were then used to predict the mature body weight of the goats. Most of the traits were positively correlated, and the correlations were statistically significant. The three main components that the PCA recovered explained 76.12% of the variation in body morphometry overall. The first component accounted for approximately 54.74% of the overall variation and described almost all the traits except ear length and tail length, as indicated by high component loadings. The second component accounted for approximately 11.48% of the variation, mostly accounting for the variation in tail length. The principal component accounted for 9.89% and mostly explained the variation in ear length. The communalities ranged between 0.557 (horn length) and 0.848 (chest circumference) for the first three extracted components. The highest percentage of variability in chest girth was explained by the first three principal components, whereas it was the lowest for the horn length. In the context of predicting body weight through stepwise regression analysis, nine primary variables accounted for 57.3% of the total variance in body weight. Conversely, utilizing the first principal component alongside six additional principal components as independent variables resulted in capturing 56.3% of the variation in the adult live weight of goats while maintaining model comparability with other pertinent parameters. PCA was used efficiently for body weight prediction from major morphometric traits of Ganjam goats addressing the multicollinearity issue. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Chemometric approaches for discriminating manufacturers of Korean handmade paper using infrared spectroscopy.
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Lee, Yong Ju, Won, Seo Young, Park, Seong Bin, and Kim, Hyoung-Jin
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MACHINE learning , *OUTLIER detection , *PRINCIPAL components analysis , *INFRARED spectroscopy , *DECISION trees - Abstract
The objective of this study was to identify the manufacturer of Hanji, Korean handmade paper widely used in conservation science. To achieve this, machine learning models utilizing attenuated total reflectance–infrared spectroscopy (ATR–IR) were developed to assess the robustness and effectiveness of the computed models. Principal component analysis (PCA), partial least squares–discriminant analysis (PLS–DA), decision tree (DT), and k-NN models were constructed using IR spectral data, with the spectral region between 1800 and 1500 cm⁻1 identified as the critical input variable through Variable Importance in Projection (VIP) scores. The transformation of the obtained spectra into second derivative spectra proved beneficial in this key spectral region, leading to significant improvements in model performance. Additionally, the application of DBSCAN for outlier detection was effective in refining the dataset, further enhancing the performance of the models. Specifically, the k-NN model, when applied to the selected variables and preprocessed with the second derivative transformation, achieved an F1 score of 0.92. These findings underscore the importance of focusing on the 1800–1500 cm⁻1 spectral range and applying outlier detection techniques, such as DBSCAN, to enhance the robustness and accuracy of the Hanji classification models by eliminating the influence of atypical data points. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Chert outcrops differentiation by means of low-field NMR relaxometry.
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Fajt, Michał, Mazur-Rosmus, Weronika, Stefańska, Anna, Kochman, Alicja, and Krzyżak, Artur T.
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Siliceous rocks served as raw materials in the production of stone tools from the Middle Paleolithic onwards. Due to migration, the provenance of archaeological artefacts can differ from their natural outcrop location. The aim of this work was the application of 1D and 2D low-field nuclear magnetic resonance (LF-NMR) relaxometry to distinguish cherts by their original source. Herein, bedded cherts and accompanying nodular cherts coming from three different outcrops of Kraków-Częstochowa Upland were investigated. 1D and 2D (T1-T2) experiments of water-saturated and dry rock sample states delivered T1, T2 times and T1/T2 ratios of distinct hydrogen populations – parameters sensitive to pore size, surface properties, and hydrogen bonding length. In-depth analysis of NMR data showed substantial differences in the porosity, pore surface and pore structure properties of investigated chert samples tested in the three different saturation levels (100% water-saturated, dried and differential). Finally, principal component analysis (PCA) was performed to reduce the number of correlations obtained and highlight the most important NMR properties specific to the particular outcrop localization."Please check captured corresponding author email if correct.""The email is correct" [ABSTRACT FROM AUTHOR]
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- 2024
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12. A hybrid PCA acceleration method for rapid real-time 2D MRI.
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Wright, Mark, Han, Gawon, Yun, Jihyun, Yip, Eugene, Gabos, Zsolt, Usmani, Nawaid, Fallone, B Gino, and Wachowicz, Keith
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PRINCIPAL components analysis , *MAGNETIC resonance imaging , *PROSTATE , *LIVER - Abstract
Objective. To develop a 2D MR acceleration method utilizing principal component analysis (PCA) in a hybrid fashion for rapid real-time applications. Approach. Retrospective testing was performed on 10 lung, 10 liver and 10 prostate 3T MRI data sets for image quality and target contourability. Sampling of k-space is performed by acquiring central (low-frequency) data in every frame while the high-frequency data is incoherently undersampled such that all of k-space is acquired in a pre-determined number of frames. Firstly, principal components (PCs) representative of intra-frame correlations between central and outer k-space data are used to estimate unsampled data in the frame of interest. Then to add further stability, PCs representative of time-domain fluctuations within a reconstruction window of the most recent frames are fit to outer k-space data (including above estimations) to obtain final estimates in the frame of interest. Accelerated reconstructions between 3x and 8x were tested for image quality and contourability along with the optimal number of PCs for fitting. Main results. It was found that at higher acceleration rates, image quality did not deteriorate significantly. Similarly, it was found that the images were of sufficient quality to contour a target using auto-contouring software at all tested acceleration rates and sites. SSIM values were found to be ⩾0.91 at all accelerations tested. Similarly dice coefficients at the different sites were found to be ⩾0.89 even at 8x accelerations which is on par with or better than intra-observer variation. Significance. This method appears to produce improved image quality and contourability compared to previous PCA methods while also allowing a greater number of PCs to be used in reconstruction. The method can be run using a simple single-channel coil and does not require significant computing power to meet real-time interventional standards (reconstruction times ∼60 ms/frame on Intel i5 CPU). [ABSTRACT FROM AUTHOR]
- Published
- 2024
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13. Ontological analysis and disease statistics of wooden coffin paintings from the Qinghai Tibetan Medicine Culture Museum, China.
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Li, Yanli, Ruan, Yuyao, Cailuotai, Suonanji, Liu, Panpan, Li, Yuhu, and Xing, Huiping
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PRESERVATION of painting , *TIBETAN medicine , *PRINCIPAL components analysis , *CARBON-black ,TANG dynasty, China, 618-907 - Abstract
The 35 wooden coffin paintings from the Tubo period of the Tang Dynasty, housed in the collection of Qinghai Tibetan Medicine Cultural Museum, are valuable materials for studying Tubo culture. Research has shown that the wood used for coffin paintings was cypress. The adhesives contain bovine collagen and chicken ovalbumin. The pigments used include carbon black, azurite, cinnabar, orpiment, minium, and lead white. This article provides a statistical analysis of the types and areas of diseases that appear in wooden coffin paintings. Through the application of descriptive statistics, correlation coefficient analysis, principal component analysis, and cluster analysis, it was determined that deterioration phenomena such as rotten, crack, pulverization, and discoloration disease were particularly pronounced in coffin paintings. Key variables influencing the disease of wooden coffin paintings include crystal salt, drop, and pulverization. The dataset was categorized into three distinct clusters, each exhibiting significant differences. This study offers valuable insights and foundational support for the future conservation and restoration of coffin paintings. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Self-DNA in Caenorhabditis elegans Affects the Production of Specific Metabolites: Evidence from LC-MS and Chemometric Studies.
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de Falco, Bruna, Adamo, Adele, Anzano, Attilio, Grauso, Laura, Carteni, Fabrizio, Lanzotti, Virginia, and Mazzoleni, Stefano
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The worm Caenorhabditis elegans, with its short lifecycle and well-known genetic and metabolic pathways, stands as an exemplary model organism for biological research. Its simplicity and genetic tractability make it an ideal system for investigating the effects of different conditions on its metabolism. The chemical analysis of this nematode was performed to identify specific metabolites produced by the worms when fed with either self- or nonself-DNA. A standard diet with OP50 feeding was used as a control. Different development stages were sampled, and their chemical composition was assessed by liquid chromatography–mass spectrometry combined with chemometrics, including both principal component analysis and orthogonal partial least squares discriminant analysis tools. The obtained data demonstrated that self-DNA-treated larvae, when arrested in their cycle, showed significant decreases in dynorphin, an appetite regulator of the nematode, and in N-formyl glycine, a known longevity promoter in C. elegans. Moreover, a substantial decrease was also recorded in the self-DNA-fed adults for the FMRF amide neuropeptide, an embryogenesis regulator, and for a dopamine derivative modulating nematode locomotion. In conclusion, this study allowed for the identification of key metabolites affected by the self-DNA diet, providing interesting hints on the main molecular pathways involved in its biological inhibitory effects. [ABSTRACT FROM AUTHOR]
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- 2024
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15. GC-MS and PCA Analysis of Fatty Acid Profile in Various Ilex Species.
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Zwyrzykowska-Wodzińska, Anna, Jarosz, Bogdan, Okińczyc, Piotr, Szperlik, Jakub, Bąbelewski, Przemysław, Zadák, Zdeněk, Jankowska-Mąkosa, Anna, and Knecht, Damian
- Abstract
Natural compounds are important source of desired biological activity which helps to improve nutritional status and brings many health benefits. Ilex paraguariensis St. Hill. which belongs to the family Aquifoliaceae is a plant rich in bioactive substances (polyphenols, saponins, alkaloids) with therapeutic potential including hepatic and digestive disorders, arthritis, rheumatism, and other inflammatory diseases, obesity, hypertension, hypercholesterolemia. In terms of phytochemical research I. paraguariensis has been the subject of most intensive investigations among Ilex species. Therefore, we concentrated on other available Ilex varieties and focused on the content of fatty acids of these shrubs. The fatty acid compounds present in Ilex sp. samples were analyzed by GC-MS. 27 different fatty acids were identified in the extracts. The results showed that many constituents with significant commercial or medicinal importance were present in high concentrations. The primary component in all samples was α linolenic acid(18:3 Δ9,12,15). Differences of this component concentration were observed between cultivars and extensively analyzed by PCA, one- way ANOVA and Kruskal-Wallis ANOVA. Significant correlations between compound concentrations were reported. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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16. Monitoring terrestrial water storage changes using GNSS vertical coordinate time series in Amazon River basin.
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Liu, Yifu, Xu, Keke, Guo, Zengchang, Li, Sen, and Zhu, Yongzhen
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GLOBAL Positioning System , *LONG short-term memory , *PRINCIPAL components analysis , *DEFORMATION of surfaces , *GRAVITATIONAL fields , *WATER storage - Abstract
Aiming at the Terrestrial Water Storage(TWS) changes in the Amazon River basin, this article uses the coordinate time series data of the Global Navigation Satellite System (GNSS), adopts the Variational Mode Decomposition and Bidirectional Long and Short Term Memory(VMD-BiLSTM) method to extract the vertical crustal deformation series, and then adopts the Principal Component Analysis(PCA) method to invert the changes of terrestrial water storage in the Amazon Basin from July 15, 2012 to July 25, 2018. Then, the GNSS inversion results were compared with the equivalent water height retrieved from Gravity Recovery and Climate Experiment (GRACE) data. The results show that (1) the extraction method proposed in this article has better denoising effect than the traditional method; (2) the surface hydrological load deformation can be well calculated using GNSS coordinate vertical time series, and then the regional TWS changes can be inverted, which has a good consistency with the result of GRACE inversion of water storage, and has almost the same seasonal variation characteristics; (3) There is a strong correlation between TWS changes retrieved by GNSS based on surface deformation characteristics and water mass changes calculated by GRACE based on gravitational field changes, but GNSS satellite's all-weather measurement results in a finer time scale compared with GRACE inversion results. In summary, GNSS can be used as a supplementary technology for monitoring terrestrial water storage changes, and can complement the advantages of GRACE technology. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Evaluation of germplasm resources of <italic>Sarcomyxa edulis</italic> in the Changbai Mountains of Northeast China.
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Miao, Liu, Dong, Qingsong, Jin, Yuanju, Priyashantha, A. K. Hasith, Jiang, Wanzhu, Zhang, Chunlan, and Xu, Jize
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GERMPLASM , *CYTOLOGICAL techniques , *CLUSTER analysis (Statistics) , *EUCLIDEAN distance , *GENETIC variation - Abstract
In this study, we evaluated 16 strains of
Sarcomyxa edulis from the Changbai Mountains, China through antagonism tests and ISSR molecular marker technique for cytological and molecular biological evaluation. Q-type and R-type cluster analyses were utilised to evaluate and classify agronomic traits according to the test guidelines for distinctness, uniformity, and stability. The tested strains showed antagonistic reactions. The differences in antagonistic reactions among different germplasm resources are helpful for evaluating genetic diversity and provide a basis for better development and utilisation of fungal germplasm resources. A total of 330 bands were amplified by 21 ISSR primers, including 321 polymorphic bands. The percentage of polymorphic bands observed was 97.07%. Using PopGen32 software, the effective number of alleles (Ne), Nei's gene diversity index (H), and Shannon's diversity index (I) were calculated, yielding average values of 1.6638, 0.3796, and 0.5480, respectively. In addition, the genetic similarity coefficient of 16 strains ranged from 0.4306–0.7778. According to the Q-type clustering, the tested strains were classified into two categories based on the Euclidean distance of 8.52. While R-type cluster analysis revealed a significant correlation between the traits. At the Euclidean distance of 6.298, the traits could be classified into three distinct categories. According to the findings, all 16 strains demonstrated high genetic diversity. The ISSR clustering results revealed that strains with shorter genetic distances were more similar in specific traits. However, there were notable differences between the results of comprehensive trait clustering (Q-type clustering) and ISSR clustering. [ABSTRACT FROM AUTHOR]- Published
- 2024
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18. Assessment of amoxicillin (AMX) removal from aqueous medium through Rhapis-based bioretention system.
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Muduli, Monali, Gohil, Harshdeepsinh, Satasiya, Gopi, Ansari, Nagma, Nair, Athira, and Ray, Sanak
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PRINCIPAL components analysis ,ORNAMENTAL plants ,RF values (Chromatography) ,PLANT growth ,PLANT development ,CONSTRUCTED wetlands ,CHEMICAL oxygen demand - Abstract
Antibiotics can be effectively removed from wastewater using constructed wetlands (C.W.s). However, little is known about using attractive garden plants in C.W.s to eliminate antibiotics. Thus, the current study aims to treat amoxicillin (AMX)-contaminated wastewater through a Rhapis excelsa-based bioretention system (BS). The investigation was done at 15 days hydraulic retention time (HRT) under two conditions: set-1, varied AMX 5 to 25 ppm with constant NPK (nitrogen, phosphorus, potassium) source; and set-2, varied NPK sources with constant AMX (25 ppm). During the study, it was observed that in the set-1 condition with increasing AMX concentration, the removal of AMX through BS decreased; however, in the set-2 experiment, with enhancing NPK source, the performance of the BS treating 25-ppm AMX-contaminated wastewater increased. AMX removal of 2.3%, 66.3%, 60.6%, 52.2%, 46.7%, and 44.9% was achieved for control, BS-1, BS-2, BS-3, BS-4, and BS-5, respectively, during set-1 experiment. However, in the set-2 experiment, 23.4% (control), 43.3% (BS-1), 60.3% (BS-2), 75.9% (BS-3), 88.8% (BS-4), and 99% (BS-5) AMX removal were achieved. Removing pollutants like AMX, COD, PO4
3 − -P, NO3 − -N, and NH4 + -N followed first-order kinetics. A positive correlation of COD with AMX was observed through principal component analysis and correlation matrix. The microbial community study was also covered to prioritize the role of microbes in treating AMX through BSs. The AMX treatment through Rhapis excelsa-based BS supported plant growth and development with increasing chlorophyll content, fresh weight, and C, H, N value. [ABSTRACT FROM AUTHOR]- Published
- 2024
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19. Optimal Site Selection for Solar PV Systems in the Colombian Caribbean: Evaluating Weighting Methods in a TOPSIS Framework.
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Robles-Algarín, Carlos, Castrillo-Fernández, Luis, and Restrepo-Leal, Diego
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This research paper proposes a framework utilizing multicriteria tools for optimal site selection of photovoltaic solar farms. A comparative analysis was conducted using three quantitative methods—CRITIC (criteria importance through intercriteria correlation), PCA (principal component analysis), and entropy—to obtain the weights for the selection process. The evaluation considered environmental, demographic, financial, meteorological, and performance system criteria. TOPSIS (technique for order preference by similarity to ideal solution) was employed to rank the alternatives based on their proximity to the ideal positive solution and distance from the ideal negative solution. The capital cities of the seven departments in the Colombian Caribbean region were selected for the assessment, characterized by high annual solar radiation, to evaluate the suitability of the proposed decision-making framework. The results demonstrated that Barranquilla consistently ranked in the top two across all methods, indicating its strong performance. Cartagena, for instance, fluctuated between first and third place, showing some stability but still influenced by the method used. In contrast, Sincelejo consistently ranked among the lowest positions. A sensitivity analysis with equal weight distribution confirmed the top-performing cities, though it also highlighted that the weight assignment method impacted the final rankings. Choosing the appropriate method for weight calculation depended on factors such as the diversity and interdependence of criteria, the availability of reliable data, and the desired sensitivity of the results. For instance, CRITIC captured inter-criteria correlation, while PCA focused on reducing dimensionality, and entropy emphasized the variability of information. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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20. Differential responses of two local and commercial guar cultivars for nutrient uptake and yield components under drought and biochar application.
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Soltani-Gerdefaramarzi, Somayeh, Hoseinollahi, Mansoureh, Meftahizadeh, Heidar, Bovand, Fatemeh, and Hatami, Mehrnaz
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PEARSON correlation (Statistics) , *SEED yield , *GUAR , *WATER efficiency , *SOIL amendments , *NUTRIENT uptake , *PLANT nutrients - Abstract
Drought is one of the abiotic stresses that can reduce crop yields. It has a major impact on crop yield reduction. For crops under stress, organic modifiers such as biochar can be useful. Guar (Cyamopsis tetragonoloba L.), an annual legume from the Fabaceae Family, is highly adaptable to arid and semi-arid regions, with many applications in various industries. Field experiments were carried out in a randomized complete block design with three replications using a split-split plots arrangement. The aim was to evaluate the influence of irrigation levels (Ir1 = 10, Ir2 = 14, and Ir3 = 17 days irrigation cycle) and biochar (B1 = 0, B2 = 5, and B3 = 10 tons ha−1) application on physiological traits [(chlorophyll a and b, chlorophyll index (SPAD), relative leaf water content (RWC), electrolyte leakage (EL), canopy temperature, leaf area, water use efficiency (WUE)], morphological parameters (length and diameter of the stem, pod length, fresh weight of root and plant, root length), yield components (seed yield, number of branch plant−1, number of clusters plant−1, pod plant−1, seed pod−1, seed plant−1, 1000-seed weight, and gum contents), and leaf nutrient uptake (Ca, Mg, P, Na, and K) of two commercial and local cultivars (cv1 = RGC-936 and cv2 = Saravan) of the guar plant. It was observed that the Ir3 irrigation treatment produced the highest seed yield (1921.8 kg ha−1) in terms of water stress. However, the maximum pod plant−1 (75.5), seed plant−1 (454.2), seed yield (1871.1 kg ha−1), leaf area (861.8 mm2), SPAD (92.2), Mg (49.8 mg g−1), Na (43.3 mg g−1) and P (0.49 mg g−1) were observed in RGC-936. The results also revealed that biochar was more effective than cultivars in terms of morphological traits. While yield and yield components were affected by cultivar, irrigation at different levels also had a significant effect on functional traits, physiology, and morphology. The addition of biochar appeared to have a positive effect on water stress alleviation and guar growth and leaf nutrient uptake. According to Pearson's correlation analysis, plant weight and length, root weight and length, stem diameter, seed pod−1, branches plant−1, and 1000-seed weight are moderately correlated with seed yield, while pod plant−1 and seed plant−1 are strongly associated with seed yield. On the other hand, the pod length, branches plant−1, and gum content showed a positive but not significant relationship. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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21. Efficient band reduction for hyperspectral imaging with dependency-based segmented principal component analysis.
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Ali, U. A. Md. Ehsan, Maniamfu, Pavodi, and Kameyama, Keisuke
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ZONING , *PRINCIPAL components analysis , *FEATURE extraction , *REMOTE sensing , *LOCAL government - Abstract
In the context of hyperspectral image (HSI) analysis, a widely used feature extraction method, Principal Components Analysis (PCA) suffers from limitations such as wavelength bias and a lack of consideration for local spectral information. While various segmentation based PCA methods attempt to address these issues by incorporating local relationships, they still overlook band similarity beyond immediate neighbours. To address these challenges, this paper introduces a novel approach called dependency based segmented PCA (dPCA). This method employs hierarchical clustering-driven mutual information-based segmentation, facilitating more comprehensive feature extraction from HSI data. By utilizing this dependency-based segmentation, both global and local structures are effectively captured, providing enhanced details for classification tasks. The proposed dPCA is evaluated on four prominent HSI datasets in remote sensing for land use classification, and the experimental results underscore its superiority over conventional PCA, and other segmentation based PCA methods in terms of classification performance. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Investigation geographic origin of <italic>Laurus nobilis</italic> L. leaves using FTIR, SEM-EDX, and XRD analysis.
- Author
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Yazıcı, Hikmet, Çolak, Sinem, and Duran, Utku
- Subjects
- *
X-ray diffraction , *DISCRIMINANT analysis , *CELL size , *PLANT species , *CRYSTAL structure - Abstract
Abstract
Laurus nobilis L. is a polypragmatic plant with high added value. Leaves collected from different regions in the natural state without breeding have different economic values. In this study, the Geographic Origin and Altitude Effects ofLaurus nobilis L. leave samples collected from provinces close to each other were investigated. For this purpose, SEM–EDS was used for morphological characterization of leaves, XRD was used for the characterization of inorganic components and FTIR-ATR was used for the identification of functional groups. By SEM analysis in the samples from Zonguldak region, significant differences were observed in the density of trichomes and glandular plumes more dense and also morphological cell sizes were found to be more large then Kastamonu region. In XRD plot, besides the amorphous state, it has seen that the crystal structure is also present in the structure. The effect of different altitudes on the FTIR spectra of the samples collected according to the provinces was also examined, and no significant difference was observed in the peak positions and intensities in the spectra according to the altitudes. Score plot on ranges of 2800–3000 cm-1 and 750–1800 cm−1 allowed origin of theLaurus nobilis L. discrimination. In order to analysis and classify them according to their geographical origin, FTIR data were combined with chemometric methods using PCA and discriminant analysis. PCA analysis explained 88.7% of the variance in the model. When the results of the discriminant analysis were evaluated, 56 of the 72 samples were classified correctly and 77.8% success was achieved. Both analysis showed that there are differences in the response of the same plant species to their presence in different origins. As a result, FTIR analysis allowed possibility the discrimination ofLaurus nobilis L. leaves and in this way it is thought to discriminate of examples for other areas. [ABSTRACT FROM AUTHOR]- Published
- 2024
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23. Enhanced intrusion detection framework for securing IoT network using principal component analysis and CNN.
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Mazid, Abdul, Kirmani, Sheeraz, and Abid, Manaullah
- Subjects
- *
CONVOLUTIONAL neural networks , *SMART devices , *PRINCIPAL components analysis , *PEARSON correlation (Statistics) , *DEEP learning - Abstract
The Internet of Things (IoT) has transformed our world by connecting smart devices and enabling seamless interactions. This reliance, however, has led to new security issues and types of attacks. It is of the utmost importance to safeguard the security of IoT networks, with network intrusion detection systems (NIDS) having a significant impact. This paper proposes a novel approach integrating Principal Component Analysis (PCA), Pearson Correlation Coefficient (PCC), and Convolutional Neural Network (CNN) to overcome these security issues. Our innovative method reduces data dimensionality and selects highly correlated features using PCC and PCA, addressing overfitting and improving model performance while maintaining high computational speed and low costs. Our approach uniquely distinguishes between benign and threat packets by employing 1D-CNN, 2D-CNN, and 3D-CNN algorithms trained on Edge-IIoTset and NSL-KDD benchmark datasets. The findings from our experiments indicate that the proposed framework significantly enhances accuracy, precision, recall, and F1-score compared to existing models for both binary and multiclass classifications. Our binary classification models achieved exceptional performance, with an average accuracy of 99.76%, 99.79% precision, 99.89% recall, and 99.85% F1-score on the Edge-IIoTset dataset. On the NSL-KDD dataset, the models attained 99.20% accuracy, 98.07% precision, 97.95% recall, and 97.71% F1-score. For multiclass classification, the proposed model demonstrated an average accuracy of 99.41%, precision of 98.61%, recall of 98.49%, and an F1-score of 98.56% on the Edge-IIoTset dataset. On the NSL-KDD dataset, the model achieved 92.43% accuracy, 93.21% precision, 93.60% recall, and a 93.7% F1-score. Our research introduces a significant advancement that substantially improves NIDS capabilities, making IoT networks safer and more connected. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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24. Identification of volatile compounds and evaluation of certain phytochemical properties of Turkish propolis.
- Author
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Yavaş, Berfin and Baştürk, Ayhan
- Subjects
- *
BUTYLATED hydroxytoluene , *PRINCIPAL components analysis , *BENZOIC acid , *PROPOLIS , *HIERARCHICAL clustering (Cluster analysis) - Abstract
The purpose of this study was to assess volatile component profiles and the antioxidant activity of propolis samples from eight different locations in Türkiye. α‐Pinene, β‐pinene, 3‐carene, limonene, 2‐acetylfuran, benzaldehyde, acetic acid, benzoic acid, longifolene, isopentyl acetate, m‐cymene, styrene, and δ‐cadinene were the most common volatile components found in the most of propolis samples. Principal component analysis (PCA) and hierarchical cluster analysis were performed on the gas chromatography–mass spectrometry (GC–MS) data to identify trends and clusters in the propolis samples. As a result of the PCA, the common components in all propolis were m‐cymene, decanal, α‐pinene, limonene, pinocarvone, benzaldehyde, and butanoic acid. The samples had 2,2‐diphenyl‐1‐picrylhydrazyl radical (DPPH) inhibition activity ranging from 19.2% to 92.5% and 2,2′‐azinobis(3‐ethylbenzothiazoline‐6‐sulfonic acid) (ABTS) values ranging from 480 to 1370 μM trolox/g extract. The total phenolic content (TPC) ranged from 10,900 to 34,033 mg GAE/100 g. Compared with butylated hydroxytoluene (BHT) (control), all but one of the propolis samples exhibited higher DPPH activity. In addition, ABTS levels of propolis extracts were higher than those of BHT. These results unequivocally show that Turkish propolis has remarkable antioxidant qualities, which makes it a viable option for addition to food and medicine products. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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25. Nutrient Mass in Winter Wheat in the Cereal Critical Window Under Different Nitrogen Levels—Effect on Grain Yield and Grain Protein Content.
- Author
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Grzebisz, Witold and Biber, Maria
- Abstract
The mass of nutrients accumulated in the vegetative parts of winter wheat (WW) in the period from the beginning of booting to the full flowering stage (Critical Cereal Window, CCW) allows for the reliable prediction of the grain yield (GY) and its components, and the grain protein content (GPC) and its yield. This hypothesis was verified in a one-factor field experiment carried out in the 2013/2014, 2014/2015, and 2015/2016 growing seasons. The field experiment included seven nitrogen-fertilized variants: 0, 40, 80, 120, 160, 200, and 240 kg N ha−1. The N, P, K, Ca, Mg, Fe, Mn, Zn, and Cu content in wheat vegetative parts (leaves, stems) was determined in two growth stages: (i) beginning of booting (BBCH 40) and (ii) full flowering (BBCH 65). We examined the response of eight WW traits (ear biomass at BBCH 65, EAB; grain yield, GY; grain protein content, GPC; grain protein yield, GPY; canopy ear density, CED; number of grains per ear, GE; number of grains per m−2—canopy grain density, CGD; and thousand grain weight, TGW) to the amount of a given nutrient accumulated in the given vegetative part of WW before flowering. The average GY was very high and ranged from 7.2 t ha−1 in 2016 to 11.3 t ha−1 in 2015. The mass of ears in the full flowering stage was highest in 2016, a year with the lowest GY. The highest N mass in leaves was also recorded in 2016. Only the biomass of the stems at the BBCH 65 stage was the highest in 2015, the year with the highest yield. Despite this variability, 99% of GY variability was explained by the interaction of CGD and TGW. Based on the analyses performed, it can be concluded that in the case of large yields of winter wheat, GE is a critical yield component that determines the CGD, and in consequence the GY. The leaf nutrient mass at the BBCH 40 stage was a reliable predictor of the GPC (R2 = 0.93), GPY (0.92), GE (0.84), and CED (0.76). The prediction of the GY (0.89), CGD (0.90), and TGW (0.89) was most reliable based on the leaf nutrient mass at the BBCH 65 stage. The best EAB prediction was obtained based on the mass of nutrients in WW stems at the BBCH 65 stage. The magnesium accumulated in WW parts turned out to be, with the exception of TGW, a key predictor of the examined traits. In the case of the TGW, the main predictor was Ca. The effect of Mg on the tested WW traits most often occurred in cooperation with other nutrients. Its presence in the developed stepwise regression models varied depending on the plant part and the WW trait. The most common nutrients accompanying Mg were micronutrients, while Zn, Fe, Mn, and Ca were the most common macronutrients accompanying Mg. Despite the apparently small impact of N, its yield-forming role was indirect. Excessive N accumulation in leaves in relation to its mass in stems, which appeared in the full flowering phase, positively impacted the EAB and GPC, but negatively affected the GE. Increasing the LE/ST ratio for both Mg and Ca resulted in a better formation of the yield components, which, consequently, led to a higher yield. This study clearly showed that nutritional control of WW during the CCW should focus on nutrients controlling N action. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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26. Exploring variability for morphological and quality traits in natural seedling origin mango germplasm of South Gujarat.
- Author
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Patel, Nikita, Tandel, Y. N., Chauhan, D. A., and Patel, A. I.
- Subjects
- *
HIERARCHICAL clustering (Cluster analysis) , *GENETIC variation , *GERMPLASM , *VITAMIN C , *FRUIT , *MANGO - Abstract
In order to determine the diversity in local seedling origin mango genotypes from different five districts (Navsari, Valsad, Dang, Tapi and Surat) of South Gujarat region during 2021–2023, which have been found in orchards or backyards by using IPGRI mango descriptor. The exploration of genetic resources was carried out to find alternative genotype against prevailing varieties in the state and it sustain mango production in future. A total of 113 mango seedlings were identified and characterized on basis of 7 qualitative, 12 quantitative and 6 biochemical parameters using Completely Randomized Design with three replications of quantitative characteristics. High variation among genotypes was observed with respect qualitative, quantitative and biochemical parameters. Ten superior genotypes were identified based on five commercially important traits viz., fruit weight (> 200 g), pulp percentage (> 60.00%), TSS (> 20 °Brix), shelf life (> 7 days) and overall acceptability (> 7 point). The genetic variability revealed that higher heritability coupled with higher genetic advance as per cent of mean for 12 quantitative characteristics namely mature fruit weight, fruit length, fruit width, pulp weight, peel weight, stone weight, TSS, acidity, ascorbic acid, total sugars, reducing sugars and non-reducing sugars. The First three Principal component contributed 70.21% of total variation and characters such as mature fruit weight, fruit length, fruit width, pulp weight, peel weight and stone weight most contributing towards diversity in germplasm. Hierarchical cluster analysis resulted the genotypes was grouped into three clusters and genotypes present in cluster III (20) and cluster I (39) had found most divers from each other. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Testing concordance and conflict in spatial replication of landscape genetics inferences.
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Wishingrad, Van and Thomson, Robert C.
- Subjects
- *
SPATIAL data structures , *SEASONAL temperature variations , *GENE flow , *GENETIC distance , *SURFACE resistance - Abstract
The degree to which landscape genetics findings can be extrapolated to different areas of a species range is poorly understood. Here, we used a broadly distributed ectothermic lizard (Sceloporus occidentalis, Western Fence lizard) as a model species to evaluate the full role of topography, climate, vegetation, and roads on dispersal and genetic differentiation. We conducted landscape genetics analyses with a total of 119 individuals in five areas within the Sierra Nevada mountain range. Genetic distances calculated from thousands of ddRAD markers were used to optimize landscape resistance surfaces and infer the effects of landscape and topographic features on genetic connectivity. Across study areas, we found a great deal of consistency in the primary environmental gradients impacting genetic connectivity, along with some site‐specific differences, and a range in the proportion of genetic variance explained by environmental factors across study sites. High‐elevation colder areas were consistently found to be barriers to gene flow, as were areas of high ruggedness and slope. High temperature seasonality and high precipitation during the winter wet season also presented a substantial barrier to gene flow in a majority of study areas. The effect of other landscape variables on genetic differentiation was more idiosyncratic and depended on specific attributes at each site. Across study areas, canyon valleys were always implicated as facilitators to dispersal and key features linking populations and maintaining genetic connectivity, though the relative importance varied in different areas. We emphasize that spatial data layers are complex and multidimensional, and careful consideration of spatial data correlation structure and robust analytic frameworks will be critical to our continued understanding of spatial genetics processes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
28. Surface science insight note: Imaging X‐ray photoelectron spectroscopy.
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Fernandez, Vincent, Fairley, Neal, Morgan, David, Bargiela, Pascal, and Baltrusaitis, Jonas
- Subjects
- *
PHOTOELECTRON spectroscopy , *INHOMOGENEOUS materials , *SURFACES (Technology) , *SPECTRAL imaging , *ELECTROCATALYSTS - Abstract
Quantification of X‐ray photoelectron spectroscopy (XPS) data is often limited by the heterogeneous nature of the material surface. However, it is often the case that heterogeneous material contains areas within the analyzed area that are effectively homogeneous. In this Insight note, concepts, and methods used to analyze both XPS data are presented to extract both spatial and spectral information from heterogeneous surfaces. These concepts and methods are applied to a specific material surface that contains three chemical compounds separated spatially. The analysis entails converting XPS image data to spectral data and is designed to highlight the potential of XPS imaging in revealing compositional information correlation with spatial information. Properties of algorithms used to evaluate XPS images and spectra are described to outline their application to image data. A case study of an imaging XPS data set is presented that demonstrates how poor signal‐to‐noise images, where the signal is recorded for 4 s per image, are still open to analysis yielding useful information. Ultimately, the methods presented here will aid in interpreting complex XPS data obtained from spatially complex materials often obtained during extensive cycling, such as conventional or electrocatalysts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
29. Influence of regional and yearly weather patterns on multi‐mycotoxin occurrence in Austrian wheat: a liquid chromatographic–tandem mass spectrometric and multivariate statistics approach.
- Author
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Freitag, Stephan, Sulyok, Michael, Reiter, Elisabeth, Lippl, Maximilian, Mechtler, Klemens, and Krska, Rudolf
- Subjects
- *
LIQUID chromatography-mass spectrometry , *FUNGAL metabolites , *METABOLITES , *MYCOTOXINS , *PRINCIPAL components analysis , *PHYTOPATHOGENIC fungi - Abstract
BACKGROUND: Mycotoxin surveys play an essential role in our food safety system. The obtained occurrence data form the basis for the assessment of the exposure of humans and animals to these toxic fungal secondary metabolites. Liquid chromatography coupled with tandem mass spectrometry (LC‐MS/MS) has become the gold standard for mycotoxin determination because it enables selective and sensitive multi‐toxin analysis. Simultaneous determination of several hundreds of secondary fungal metabolites is feasible using this technique. In this study, we combined a targeted dilute‐and‐shoot LC‐MS/MS‐based multi‐analyte approach with multivariate statistics for the analysis of Austrian wheat from two different years and different geographical origins. RESULTS: We quantified 47 secondary fungal metabolites, including regulated emerging and masked mycotoxins. The resulting multi‐mycotoxin occurrence data were further analyzed using both multivariate and univariate statistics. Principal component analysis (PCA) and analysis of variance (ANOVA) simultaneous component analysis (ASCA) were employed to identify regional and yearly trends within the dataset and to quantify the variance in metabolite occurrence attributed to the different effects. In addition, secondary fungal metabolites significantly impacted by these factors were selected via ANOVA. Of the 47 secondary metabolites identified, 39 were affected by the year, region or a combined effect. Moreover, our findings show that 43 of the secondary fungal metabolites were significantly influenced by the weather conditions. CONCLUSION: The results presented in this study underline the added value of combining targeted LC‐MS/MS with multivariate statistics for monitoring a broad spectrum of secondary fungal metabolites in food crops. Through multivariate statistics, trends associated with the year or region can be readily studied. The approach presented could pave the way for a better understanding of the impact of climate change on plant pathogenic fungi and its implications for food safety. © 2024 The Author(s). Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
30. Acacia seeds: compositional variation based on species, growing locations and harvest years.
- Author
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Chong, Wei Shan Cassandra, Tilbrook, Dale, Pereira, Gavin, Dykes, Gary A., George, Nicholas, and Coorey, Ranil
- Subjects
- *
COMPOSITION of seeds , *MINERAL analysis , *ACACIA , *MAGNESIUM , *SEEDS - Abstract
Summary: Three different Acacia seeds (A. retinodes, A. provincialis and A. tenuissima) harvested from different locations and in different years were analysed for their variations in proximate and mineral composition. Results showed no one species had the highest content across all proximate and mineral analyses, for example, A. retinodes Harmans 2020 had the highest ash (3.7%), A. retinodes Harmans 2022 had the highest protein content (31.3%), A. tenuissima Hindmarsh 2020 had the highest fat content (18.5%) and A. provincialis Tarrington 2022 had the highest magnesium content (469 mg/100 g). Principle component analysis was carried out to determine the effect of species, harvest locations and years on the chemical composition. A biplot of the first two principal components with a total of 60.5% variation showed clustering based on harvest years. The compositions of the Acacia seeds were determined to be affected by species, harvest location and year differences. However, a complete gene–environment interaction study is needed to validate this. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
31. Assessment of Genomic Diversity and Selective Pressures in Crossbred Dairy Cattle of Pakistan.
- Author
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Nisa, Fakhar un, Naqvi, Rubab Zahra, Arshad, Fazeela, Ilyas, Iram, Asif, Muhammad, Amin, Imran, Mrode, Raphael, Mansoor, Shahid, and Mukhtar, Zahid
- Subjects
- *
SAHIWAL cattle , *CATTLE breeds , *DAIRY cattle , *AGRICULTURE , *HAPLOTYPES , *CATTLE crossbreeding - Abstract
Improving the low productivity levels of native cattle breeds in smallholder farming systems is a pressing concern in Pakistan. Crossbreeding high milk-yielding holstein friesian (HF) breed with the adaptability and heat tolerance of Sahiwal cattle has resulted in offspring that are well-suited to local conditions and exhibit improved milk yield. The exploration of how desirable traits in crossbred dairy cattle are selected has not yet been investigated. This study aims to provide the first overview of the selective pressures on the genome of crossbred dairy cattle in Pakistan. A total of eighty-one crossbred, thirty-two HF and twenty-four Sahiwal cattle were genotyped, and additional SNP genotype data for HF and Sahiwal were collected from a public database to equate the sample size in each group. Within-breed selection signatures in crossbreds were investigated using the integrated haplotype score. Crossbreds were also compared to each of their parental breeds to discover between-population signatures of selection using two approaches: cross-population extended haplotype homozygosity and fixation index. We identified several overlapping genes associated with production, immunity, and adaptation traits, including U6, TMEM41B, B4GALT7, 5S_rRNA, RBM27, POU4F3, NSD1, PRELID1, RGS14, SLC34A1, TMED9, B4GALT7, OR2AK3, OR2T16, OR2T60, OR2L3, and CTNNA1. Our results suggest that regions responsible for milk traits have generally experienced stronger selective pressure than others. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Distributed video transmission reduction approach for energy saving in WMSNs.
- Author
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Abbood, Iman Kadhum and Idrees, Ali Kadhum
- Subjects
- *
WIRELESS sensor networks , *PRINCIPAL components analysis , *FEATURE extraction , *ENERGY consumption , *DATA integrity - Abstract
Summary: Wireless Multimedia Sensor Networks (WMSNs) are composed of a large number of sensor nodes that are distributed in a region to collect and transmit data. Video transmission is one of the most important applications of WMSNs because it can provide critical information about monitored areas. WMSNs face challenges related to energy consumption, bandwidth usage, and network congestion related to huge amounts of data collected by sensors. To tackle this problem, this paper proposes the Distributed Video Transmission Reduction Approach for Energy Saving in WMSN (DiViTRA). The method involves two phases: sensing and transmission phases. DiViTRA achieves frame rate adaptation to reduce the number of captured video frames and save energy during the sensing phase. In the transmission phase, three effective techniques, ORB (Oriented FAST and Rotated BRIEF), Brute‐Force (BF) Matcher, and Grid‐based Motion Statistics (GMS) are applied to decide whether to transmit the current captured frame or remove it and adjust the frame capturing rate of the video sensor accordingly. In the case of frame transmission, the DiViTRA approach compresses the frame using two data reduction approaches: PCA (Principal Component Analysis) and Huffman encoding. Through simulations, DiViTRA demonstrates a 12% reduction in energy consumption, and 71% is a ratio of reduction in sent frames while preserving stream quality. The approach has been validated in scenarios involving critical events, showcasing its efficacy in maintaining data integrity during transmission. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Sub‐sampled adaptive trust region method on Riemannian manifolds.
- Author
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Zhao, Shimin, Yan, Tao, and Zhu, Yuanguo
- Subjects
- *
GRASSMANN manifolds , *ALGORITHMS - Abstract
We consider the problem of large‐scale finite‐sum minimization on Riemannian manifold. We develop a sub‐sampled adaptive trust region method on Riemannian manifolds. Based on inexact information, we adopt adaptive techniques to flexibly adjust the trust region radius in our method. We present the iteration complexity is Omax{εg−2εH−1,εH−3}$$ O\left(\max \left\{{\varepsilon}_g^{-2}{\varepsilon}_H^{-1},{\varepsilon}_H^{-3}\right\}\right) $$ when the algorithm attains an (εg,εH)$$ \left({\varepsilon}_g,{\varepsilon}_H\right) $$‐second‐order stationary point, which matches the result on trust region method. Numerical results for PCA on Grassmann manifold and low‐rank matrix completion are reported to demonstrate the effectiveness of the proposed Riemannian method. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Determinant Factors of Profitability in Fintech Lending Companies in Indonesia from 2019 to 2022 Using Principal Component Analysis (PCA).
- Author
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Nomba, Aditya Novanto and Rikumahu, Brady
- Abstract
This reserach examines factors influencing the profitability of Fintech lending companies in Indonesia. A purposive sampling method was employed to select 45 companies annually. The data for this research are cross-sectional, comprising the years 2019, 2020, 2021, and 2022. The methods in this research are Principal Component Analysis (PCA) and multiple linear regression. Findings reveal that current ratio, cash ratio, working capital turnover, debt to assets ratio, short-term debt ratio, equity multiplier, total assets turnover, fixed assets turnover, tangible assets ratio, and effective tax rate significant determinants of profitability for Fintech lending companies in Indonesia. This reserach can help Fintech lending companies improve their profitability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Assessment of Flavor Compounds in Blended Malt Whisky Aged with Acacia, Cedar and Oak Wood Using Liquid Chromatography Hyphenated to Electrospray Ionization and Tandem Mass Spectrometry (LC-ESI-MS/MS).
- Author
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Díaz, Daniel A., Byzdra, Aleksander, Jensen, Tobias E., and Nielsen, Nikoline J.
- Subjects
LIQUID chromatography-mass spectrometry ,ELECTROSPRAY ionization mass spectrometry ,WOOD ,SYRINGIC acid ,ONE-way analysis of variance ,WOOD chemistry - Abstract
Selected flavor compounds from wood were quantified, with liquid chromatography hyphenated to electrospray ionization and tandem mass spectrometry (LC-ESI-MS/MS), in four samples of base spirit matured with acacia, cedar, virgin oak, and used port wine oak wood cubes and the results were used to describe and differentiate their different wood congener profiles. ESI-MS/MS parameters were optimized in terms of capillary voltage, cone- and desolvation gas flow, source- and desolvation temperature, cone voltage, and collision energy. The method was validated in terms of linearity (R
2 > 0.995), limit of detection, limit of quantification, recovery, and repeatability. One-way analysis of variance (ANOVA) showed that for most compounds there were no significant differences (α = 0.05) between seven to 30 days of aging plus a heat treatment at 40 °C, but wood type did significantly influence the wood congener profile. Principal component analysis discriminated the spirits based on relative amounts of wood congeners extracted, and the chemical profile. Aging with cedar wood led to a less pronounced chemical profile, not very distinct from the base spirit. Aging with acacia and virgin oak wood produced a second chemical profile with relatively higher levels of synapaldehyde, syringaldehyde, scopoletin, and coniferyl aldehyde. Aging with port oak wood produced a third chemical profile with relatively higher levels of 5-HMF, gallic acid, furfural, vanillic acid, and syringic acid. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
36. Evaluation of Focus Measures for Hyperspectral Imaging Microscopy Using Principal Component Analysis.
- Author
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Nasibov, Humbat
- Subjects
HYPERSPECTRAL imaging systems ,PRINCIPAL components analysis ,MICROSCOPY ,SOIL testing ,MICROSCOPES ,SPECTRAL imaging - Abstract
An automatic focusing system is a crucial component of automated microscopes, adjusting the lens-to-object distance to find the optimal focus by maximizing the focus measure (FM) value. This study develops reliable autofocus methods for hyperspectral imaging microscope systems, essential for extracting accurate chemical and spatial information from hyperspectral datacubes. Since FMs are domain- and application-specific, commonly, their performance is evaluated using verified focus positions. For example, in optical microscopy, the sharpness/contrast of visual peculiarities of a sample under testing typically guides as an anchor to determine the best focus position, but this approach is challenging in hyperspectral imaging systems (HSISs), where instant two-dimensional hyperspectral images do not always possess human-comprehensible visual information. To address this, a principal component analysis (PCA) was used to define the optimal ("ideal") optical focus position in HSIS, providing a benchmark for assessing 22 FMs commonly used in other imaging fields. Evaluations utilized hyperspectral images from visible (400–1100 nm) and near-infrared (900–1700 nm) bands across four different HSIS setups with varying magnifications. Results indicate that gradient-based FMs are the fastest and most reliable operators in this context. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. CoMadOut—a robust outlier detection algorithm based on CoMAD.
- Author
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Lohrer, Andreas, Kazempour, Daniyal, Hünemörder, Maximilian, and Kröger, Peer
- Subjects
MACHINE learning ,RECEIVER operating characteristic curves ,ROBUST statistics ,ALGORITHMS - Abstract
Unsupervised learning methods are well established in the area of anomaly detection and achieve state of the art performances on outlier datasets. Outliers play a significant role, since they bear the potential to distort the predictions of a machine learning algorithm on a given dataset. Especially among PCA-based methods, outliers have an additional destructive potential regarding the result: they may not only distort the orientation and translation of the principal components, they also make it more complicated to detect outliers. To address this problem, we propose the robust outlier detection algorithm CoMadOut, which satisfies two required properties: (1) being robust towards outliers and (2) detecting them. Our CoMadOut outlier detection variants using comedian PCA define, dependent on its variant, an inlier region with a robust noise margin by measures of in-distribution (variant CMO) and optimized scores by measures of out-of-distribution (variants CMO*), e.g. kurtosis-weighting by CMO+k. These measures allow distribution based outlier scoring for each principal component, and thus, an appropriate alignment of the degree of outlierness between normal and abnormal instances. Experiments comparing CoMadOut with traditional, deep and other comparable robust outlier detection methods showed that the performance of the introduced CoMadOut approach is competitive to well established methods related to average precision (AP), area under the precision recall curve (AUPRC) and area under the receiver operating characteristic (AUROC) curve. In summary our approach can be seen as a robust alternative for outlier detection tasks. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. Statistical Study of Groundwater Salinity at Lake Dayet Erroumi, Morocco.
- Author
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El Qryefy, Mohamed, Hichar, Abdelhadi, El Qryefy, Mouhcine, El Hammoumi, Tarik, and El Kharrim, Khadija
- Subjects
GROUNDWATER ,SALINITY ,BIOMINERALIZATION ,INFORMATION retrieval ,DESCRIPTIVE statistics - Abstract
In the present study, descriptive and multivariate statistical techniques (principal component analysis) were used to investigate groundwater salinity in the area adjacent to Lake Dayet Erroumi. Nine groundwater samples were collected during September 2019 and analyzed for the following physicochemical variables: pH, EC, DO, Ca
2+ , Mg2+ , Na+ , K+ , HCO3 - , Cl- , SO4 2- and NO3 - . On the basis of on concentration averages, cation abundance is Na+ > Ca2+ > Mg2+ > K+ and anion abundance is Cl- > HCO3 - > SO4 2- > NO3 - . Two principal components were selected on the basis of eigenvalue, which explains 71.39% of the total variance. The first principal component (F1) accounts for 52.37% of total variance and indicates water salinization, which depends on abiotic factors. The second principal component (F2) explains 19.01% of the information and indicates parameters dependent on biotic factors (DO and pH). Projection of the observations revealed two groups of wells: the first group comprises the wells characterized by very high salinity, and the second group comprises the wells with lower salinity. These results show that the wells on the southern shore of the lake are more highly mineralized than other wells. The high mineralization of the groundwater is of natural origin, due to the leaching of Triassic evaporitic rocks. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
39. Evaluating genetic diversity of morpho-physiological traits in sweet cherry (Prunus avium L.) cultivars using multivariate analysis.
- Author
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Dangi, Girish, Singh, Dinesh, Chauhan, Neena, Dogra, R. K., Verma, Pramod, and Chauhan, Akriti
- Abstract
The current research focused on the examination of 20 distinct sweet cherry cultivars after analyzing 34 qualitative and 39 quantitative morpho-physiological attributes encompassing tree, leaf, flower, fruit, and stone characteristics. The findings highlighted a notable spectrum of diversity within the assessed array of sweet cherry cultivars. The analysis of correlation coefficients revealed noteworthy positive and negative correlations among the morpho-physiological traits under investigation. Predominantly, these significant correlation coefficients were identified between attributes reflecting both the size and quality of the fruit. The application of principal component analysis (PCA) on both quantitative and qualitative morphological parameters elucidated a substantial portion of the total variability, accounting for 85.29% and 89.18% across the initial eight and nine axes, respectively. In this PCA, specific traits such as leaf width, fruit sweetness, fruit juice color, fruit juiciness, and fruit flesh colorstood out as dominant factors within the realm of qualitative characteristics. Meanwhile, within the realm of quantitative traits, attributes including leaf area, leaf length, TSS, TSS: acid ratio, pulp-to-stone ratio, and yield efficiency emerged as primary contributors within the first components of PCA. This underscores their significance in the evaluation and characterization of sweet cherry germplasm. Ward's agglomeration, employing Euclidean's distance method, yielded a hierarchical cluster analysis that classified assorted sweet cherry cultivars into two primary clusters, each containing several secondary sub-clusters. This classification indicates a significant potential within the characterized sweet cherry collection for targeted breeding objectives. Notably, sweet cherry cultivars spanning various clusters hold promise as potential parent candidates for hybridization, enabling the development of novel genotypes. The dendrogram depicting the assessed traits visually portrays notable differentiation among sweet cherry cultivars, thus indicating clear distinctions. Moreover, it also hints at the presence of synonymous traits within the evaluated sweet cherry group. [ABSTRACT FROM AUTHOR]
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- 2024
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40. Wasserstein principal component analysis for circular measures.
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Beraha, Mario and Pegoraro, Matteo
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We consider the 2-Wasserstein space of probability measures supported on the unit-circle, and propose a framework for Principal Component Analysis (PCA) for data living in such a space. We build on a detailed investigation of the optimal transportation problem for measures on the unit-circle which might be of independent interest. In particular, building on previously obtained results, we derive an expression for optimal transport maps in (almost) closed form and propose an alternative definition of the tangent space at an absolutely continuous probability measure, together with fundamental characterizations of the associated exponential and logarithmic maps. PCA is performed by mapping data on the tangent space at the Wasserstein barycentre, which we approximate via an iterative scheme, and for which we establish a sufficient a posteriori condition to assess its convergence. Our methodology is illustrated on several simulated scenarios and a real data analysis of measurements of optical nerve thickness. [ABSTRACT FROM AUTHOR]
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- 2024
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41. Klinische Studie PEPCA: Der Effekt standardisierter präoperativer Patientenedukation zu patientenkontrollierter Regionalanästhesie auf postoperative Schmerzen.
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Bacher, Tobias and Ewers, Andre
- Abstract
Copyright of Der Schmerz is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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42. From unwanted to wanted: Blending functional weed traits into weed distribution maps.
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Schatke, Mona, Ulber, Lena, Musavi, Talie, Wäldchen, Jana, and Redwitz, Christoph
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WEED control , *WEED competition , *PRINCIPAL components analysis , *HERBICIDES , *ECOSYSTEM services - Abstract
Site‐specific weed management (SSWM) is increasingly employed to reduce herbicide inputs. Incorporating functional traits of weed species allows for the selection of SSWM methods that effectively reduce the abundance of weeds with a high competitive potential (disservice) while preserving weeds that provide beneficial ecosystem services (service). In this study, we aim to assess relevant weed functional traits and translate this information into a spatial trait distribution map for weed (dis‐)service provision. The distribution of weed abundance in a field was recorded using a spatial grid. Data on functional traits for the recorded weed species were extracted from published datasets and combined into the two variables, service and disservice. Individual traits (service/disservice) were weighted for each pixel of the weed distribution map based on the number of individual plants per species. Principal component analysis was employed to generate independent variables to describe the potential for service and disservice provision. As a result, two (dis‐)service trait‐based distribution maps were generated: one highlights field areas that provide enhanced ecological services, while the other displays areas with a high disservice potential. The results show that around 61% of the area in the field had a high service potential. The area with a high disservice was slightly higher than the half of the area with a high service, while about 32% of the field has both high service and disservice potential in the same area. This study presents a spatially explicit approach to incorporate information on weed functional traits into SSWM approaches targeted at reducing weed competition while at the same time enhancing weed functional diversity. [ABSTRACT FROM AUTHOR]
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- 2024
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43. A comparison of principal component analysis, reduced-rank regression, and partial least–squares in the identification of dietary patterns associated with cardiometabolic risk factors in Iranian overweight and obese women.
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Gholami, Fatemeh, Hajiheidari, Ahmadreza, Barkhidarian, Bahareh, Soveid, Neda, Yekaninejad, Mir Saeid, Karimi, Zahra, Bahrampour, Niki, Keshavarz, Seyed Ali, Javdan, Gholamali, and Mirzaei, Khadijeh
- Subjects
- *
DIETARY patterns , *MONOCYTE chemotactic factor , *LEAN body mass , *OBESITY in women , *PLASMINOGEN activator inhibitors - Abstract
Background: According to epidemiological studies, unhealthy dietary patterns and lifestyle lead to rising obesity and cardiometabolic diseases in Iran. Hybrid techniques were used to identify a dietary pattern characterized by fiber, folic acid, and carotenoid intake due to their association with cardiometabolic risk factors such as anthropometric measurements, blood pressure, lipid profile, C-Reactive Protein (CRP), Plasminogen Activator Inhibitor (PAI), Homeostatic Model Assessment Index (HOMA Index), cardiometabolic index (CMI), and monocyte chemoattractant protein (MCP-1). So, the objective of the recent study is to compare the reduced-rank regression (RRR) and partial least–squares (PLS) approaches to principal component analysis (PCA) for estimating diet-cardiometabolic risk factor correlations in Iranian obese women. Methods: Data on dietary intake was gathered from 376 healthy overweight and obese females aged 18 to 65 years using a 147-item food frequency questionnaire (FFQ). In this cross-sectional study, participants were referred to health centers of Tehran. Dietary patterns were developed using PCA, PLS, and RRR, and their outputs were assessed to identify reasonable patterns connected to cardiometabolic risk factors. The response variables for PLS and RRR were fiber, folic acid, and carotenoid intake. Results: In this study, 3 dietary patterns were identified by the PCA method, 2 dietary patterns by the PLS method, and one dietary pattern by the RRR method. High adherence to the plant-based dietary pattern identified by all methods were associated with higher fat free mass index (FFMI) (P < 0.05). Women in the highest tertile of the plant-based dietary pattern identified by PLS had 0.06 mmol/L (95% CI: 0.007,0.66, P = 0.02), 0.36 mmHg (95% CI: 0.14,0.88, P = 0.02), and 0.46 mg/l (95% CI: 0.25,0.82, P < 0.001), lower FBS, DBP, and CRP respectively than women in the first tertile. Also, PLS and RRR-derived patterns explained greater variance in the outcome (PCA: 1.05%; PLS: 11.62%; RRR: 25.28%), while the PCA dietary patterns explained greater variance in the food groups (PCA: 22.81%; PLS: 14.54%; RRR: 1.59%). Conclusion: PLS was found to be more appropriate in determining dietary patterns associated with cardiometabolic-related risk factors. Nevertheless, the advantage of PLS over PCA and RRR must be confirmed in future longitudinal studies with extended follow-up in different settings, population groups, and response variables. [ABSTRACT FROM AUTHOR]
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- 2024
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44. Regional analysis of specific suspended sediment loads in northern Iran using multivariate statistical techniques.
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Khaleghi, Somaiyeh, Nosrati, Kazem, Kebriyaeizadeh-Kachourestaghi, Somaiyeh, and Collins, Adrian L.
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WATER management , *SUSPENDED sediments , *PRINCIPAL components analysis , *REGRESSION analysis , *CLUSTER analysis (Statistics) - Abstract
Predicting suspended sediment loads in areas without detailed measurements, or with only short-term records, is crucial for the sustainable management of water resources. This study aimed to establish the relationships between specific suspended sediment loads and the characteristics of 23 sub-basins within the Haraz-Neka River basin, in Iran, to create regional models to estimate the sediment loads. To achieve this, several analytical methods were used, including cluster analysis, principal component analysis, principal component and classification analysis, and general linear modelling. Among these, the principal component analysis regression model was the most effective for estimating suspended sediment loads in the clusters. The principal component and classification analysis revealed that the best predictor was the first principal component, which strongly correlated with the minimum and mean elevation of the sub-basins. The general linear model regression showed the best overall performance for estimating regional suspended sediment loads in the study area. [ABSTRACT FROM AUTHOR]
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- 2024
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45. Effect of Substituting Wheat Flour With Protein‐Rich Sources on Quality of Instant Noodles.
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Rahimi, Mona, Elhamirad, Amir Hossein, Shafafi Zenoozian, Masoud, Jafarpour, Afshin, Armin, Mohammad, and Vukic, Milan
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ESSENTIAL amino acids , *PRINCIPAL components analysis , *SPIRULINA platensis , *SOY proteins , *NUTRITIONAL value - Abstract
There is a lack of dietary fiber and some essential amino acids in instant noodles. Enriching this popular food with protein‐ and fiber‐rich sources is important to improve the nutritional quality of noodles. The current study is aimed at enriching instant noodles by substituting wheat flour with lentil flour (7%–35%: L7%, L21%, and L35%), soy‐protein isolate (1%–5%: S1%, S3% and S5%), egg‐white protein (1–5: E1%, E3%, and E5%) and Spirulina platensis (1%–5%: S.p1%, S.p3% and S.p5%). The physicochemical, microbial, textural, and sensorial properties of noodle samples were investigated. The spatial relationship between parameters was also evaluated based on principal component analysis (PCA) to select the suitable noodle formulation. The highest protein (17.06%) and lowest carbohydrate contents (76.44%) were for L35%. The lowest (1.69%) and highest fat contents (2.04%) were for S5% and S.p5%m, respectively (p > 0.05). Energy values varied from 394.83 (E5%) to 396.37 kcal/100 g (S.p5%). There was no significant difference between the microbial quality of noodle samples (p > 0.05). The hardness of noodles with 1%–5% soy protein, 21% or more lentil flour, and 3% or more egg‐white/Spirulina was higher than the control/unenriched group (p < 0.05). The color difference of E1 and E3% with the control sample was not obvious (ΔE∗ < 3). Although all the ingredients improved the nutritional value of the noodles, the overall acceptance of samples with 3% or more of Spirulina was lower than the acceptable limit (a score of 3). According to PCA, when the nutritional value and sensory acceptance are important, the L35% may be a better choice. E1%, E3%, S1%, S5%, and L7% noodles received almost the same sensory score as the control sample, while they had more nutritional values. A combination of animal, plant, and microalgae protein sources may provide a noodle with high nutritional value, containing a wide range of essential amino acids and bioactive compounds. More research is needed to optimize such a formulation. [ABSTRACT FROM AUTHOR]
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- 2024
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46. Three- and two-dimensional deep neural network for acute ischemic stroke identification in T1-weighted magnetic resonance imaging.
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Reeja, J. Jackulin and Arun, C. H.
- Subjects
ARTIFICIAL neural networks ,MAGNETIC resonance imaging ,ISCHEMIC stroke ,CONVOLUTIONAL neural networks ,COMPUTER vision - Abstract
Deep neural networks (DNNs) are increasingly being utilized in both computer vision and analysis of medical images. Three-dimensional (3D) convolutional neural networks (CNNs) can extract spatiotemporal features from 3D medical images and can be used to classify anatomical structures. However, it increases the time complexity of the training process, which is why 3D CNNs are often used in combination with traditional two-dimensional (2D) CNNs. The diagnosis of stroke lesions relies critically on magnetic resonance imaging (MRI). Expert experience is required for accurate manual detection, which is time-consuming. Computational power has allowed CNNs to perform on par with or better than clinicians in many tasks. A DNN ResNet34–AlexNet combination was utilized to analyze MR images for diagnosing acute ischemic stroke (AIS). A performance comparison was made between 2D and 3D state-of-the-art CNNs. More computational resources and time are required to train the 3D CNN model than its 2D counterpart. The proposed model achieved an accuracy of 54.55% compared with the VGG16 model in the 3D MRI and 42.94% in the 2D MRI. A T1-weighted MR image was used in the study to compare the performance of 2D and 3D CNNs for identifying AIS. [ABSTRACT FROM AUTHOR]
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- 2024
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47. Bug prediction based on deep neural network with reptile search optimization to enhance software reliability.
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Garg, Renu and Bhargava, Anamika
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ARTIFICIAL neural networks ,SOFTWARE reliability ,FEATURE extraction ,COMPUTER software quality control ,DATABASES - Abstract
Software reliability is a far more important factor that influences quality of the software. Software bug identification is a critical aspect of software development method. Software reliability is greatly impacted by the existence of defects in the software, so must anticipate bugs in software. Nevertheless, software bug detection may be insufficiently accurate for practical application, and wide benefits of various may be used. To address these concerns, Modified Deep Neural Network (MDNN) is suggested for predicting software defects. Initially, raw data's are collected and pre-processed by using min–max normalisation that reorganises the data as in database. Then, utilizing principal component evaluation for reduce the dimensionality of pre-processed data. After reducing dimension select appropriate features using correlation based Fuzzy C-means Clustering Method (FCM). First, unnecessary characteristics are removed employing FCM, and then non-redundant features were extracted from every cluster utilising correlations value. After that selected features are given as an input for MDNN. MDNN is developed through optimal selection of weight parameter using Reptile Search Optimization (RSA) algorithm providing error as fitness. Finally, classifier predict bugs in software module which is used to improve software reliability performance is achieved. According to the simulation study, the proposed method achieves 98% accuracy, 0.02% error, 95% specificity, 90% recall, and 95% precision. This indicates that the proposed approach performs better than all prior options. Based on this proposed classification bugs are predicted and software reliability performance is improved. [ABSTRACT FROM AUTHOR]
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- 2024
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48. Enhancing Transcranial Blood Flow Visualization with Dynamic Light Scattering Technologies: Advances in Quantitative Analysis.
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Zherebtsov, Evgeny, Sdobnov, Anton, Sieryi, Oleksii, Kaakinen, Mika, Eklund, Lauri, Myllylä, Teemu, Bykov, Alexander, and Meglinski, Igor
- Subjects
- *
SPECKLE interference , *FLOW visualization , *BLOOD flow , *SPECKLE interferometry , *PRINCIPAL components analysis , *CEREBRAL circulation - Abstract
A comparative application of major dynamic light scattering (DLS)‐based image methodologies applied to transcranial cerebral blood flow imaging is presented. In particular, the study delves into assessing capability of Laser Doppler Flowmetry (LDF), Laser Speckle Contrast Imaging (LSCI), and Diffuse Correlation Spectroscopy (DCS) in enhancing the spatial and temporal resolution of transcranial blood flow imaging. An integral part of the study is focused on the modulation of blood flow through the administration of the vasodilator drug, Sodium Nitroprusside (SNP). This pharmacological intervention facilitated a direct observation of cerebral vasculature's responsiveness to external stimuli, illuminating the physiological adaptations within the brain's microvascular architecture. Advanced LSCI processing techniques are incorporated, notably entropy and principal component analysis (PCA). Entropy is providing a quantifiable measure of the randomness and complexity within the speckle patterns of transcranial blood flow images, revealing remarkably similar outcomes with DSC approach in terms of blood flow dynamics and its quantitative evaluation. The application of PCA approach is provided a more nuanced understanding of blood flow dynamics, facilitating the identification of subtle changes induced by drug administration. This method proved instrumental in enhancing the visualization and detection of nuanced blood flow dynamics, thereby allowing for a more detailed examination of cerebral circulation alterations induced by SNP administration. The study seeks to offer a wider‐ranging insight into comprehending the translating further the concept of DLS into transcrainial blood flow vizualization and explore its practical applications, considering hardware, advanced quantitative image processing, and data acquisition. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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49. A Comparison Analysis of Four Different Drying Treatments on the Volatile Organic Compounds of Gardenia Flowers.
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Peng, Jiangli, Ai, Wen, Yin, Xinyi, Huang, Dan, and Li, Shunxiang
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PRINCIPAL components analysis , *MICROWAVE drying , *CLUSTER analysis (Statistics) , *GARDENIA , *REGRESSION analysis - Abstract
The gardenia flower not only has extremely high ornamental value but also is an important source of natural food and spices, with a wide range of uses. To support the development of gardenia flower products, this study used headspace gas chromatography–ion mobility spectrometry (HS-GC–IMS) technology to compare and analyze the volatile organic compounds (VOCs) of fresh gardenia flower and those after using four different drying methods (vacuum freeze-drying (VFD), microwave drying (MD), hot-air drying (HAD), and vacuum drying (VD)). The results show that, in terms of shape, the VFD sample is almost identical to fresh gardenia flower, while the HAD, MD, and VD samples show significant changes in appearance with clear wrinkling; a total of 59 volatile organic compounds were detected in the gardenia flower, including 13 terpenes, 18 aldehydes, 4 esters, 8 ketones, 15 alcohols, and 1 sulfide. Principal component analysis (PCA), cluster analysis (CA), and partial least-squares regression analysis (PLS-DA) were performed on the obtained data, and the research found that different drying methods impact the VOCs of the gardenia flower. VFD or MD may be the most effective alternative to traditional sun-drying methods. Considering its drying efficiency and production cost, MD has the widest market prospects. [ABSTRACT FROM AUTHOR]
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- 2024
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50. Extracellular RNAs from Whole Urine to Distinguish Prostate Cancer from Benign Prostatic Hyperplasia.
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Stella, Michele, Russo, Giorgio Ivan, Leonardi, Rosario, Carcò, Daniela, Gattuso, Giuseppe, Falzone, Luca, Ferrara, Carmen, Caponnetto, Angela, Battaglia, Rosalia, Libra, Massimo, Barbagallo, Davide, Di Pietro, Cinzia, Pernagallo, Salvatore, Barbagallo, Cristina, and Ragusa, Marco
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LINCRNA , *BENIGN prostatic hyperplasia , *NON-coding RNA , *OVERTREATMENT of cancer , *MICRORNA - Abstract
RNAs, especially non-coding RNAs (ncRNAs), are crucial players in regulating cellular mechanisms due to their ability to interact with and regulate other molecules. Altered expression patterns of ncRNAs have been observed in prostate cancer (PCa), contributing to the disease's initiation, progression, and treatment response. This study aimed to evaluate the ability of a specific set of RNAs, including long ncRNAs (lncRNAs), microRNAs (miRNAs), and mRNAs, to discriminate between PCa and the non-neoplastic condition benign prostatic hyperplasia (BPH). After selecting by literature mining the most relevant RNAs differentially expressed in biofluids from PCa patients, we evaluated their discriminatory power in samples of unfiltered urine from 50 PCa and 50 BPH patients using both real-time PCR and droplet digital PCR (ddPCR). Additionally, we also optimized a protocol for urine sample manipulation and RNA extraction. This two-way validation study allowed us to establish that miRNAs (i.e., miR-27b-3p, miR-574-3p, miR-30a-5p, and miR-125b-5p) are more efficient biomarkers for PCa compared to long RNAs (mRNAs and lncRNAs) (e.g., PCA3, PCAT18, and KLK3), as their dysregulation was consistently reported in the whole urine of patients with PCa compared to those with BPH in a statistically significant manner regardless of the quantification methodology performed. Moreover, a significant increase in diagnostic performance was observed when molecular signatures composed of different miRNAs were considered. Hence, the abovementioned circulating ncRNAs represent excellent potential non-invasive biomarkers in urine capable of effectively distinguishing individuals with PCa from those with BPH, potentially reducing cancer overdiagnosis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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