2,422 results on '"Tag"'
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2. An Effective Tag Assignment Approach for Billboard Advertisement
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Ali, Dildar, Kumar, Harishchandra, Banerjee, Suman, Prasad, Yamuna, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Barhamgi, Mahmoud, editor, Wang, Hua, editor, and Wang, Xin, editor
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- 2025
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3. The effect of playing Onigokko on children's executive function and cardiovascular endurance in the early elementary school grades.
- Author
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Aoyama, Sho
- Abstract
This study investigated whether continuously playing Onigokko, a game similar to tag, could enhance children's cognitive flexibility, a component of executive function, and improve cardiovascular endurance. The intervention group comprised 34 students enrolled in the second-grade A class of H elementary school in Y prefecture. The control group comprised 34 students enrolled in the second-grade B class at the same school. Cognitive flexibility was assessed using the Trail Making Test Task B (TMT-B), while cardiovascular endurance was measured using a 20-meter shuttle run. These measurements were taken for both groups before and after four weeks playing Onigokko with the intervention group. A two-way ANOVA was applied for each measurement item, considering the group (intervention and control groups) and measurement period (pre and post). A significant interaction was found between cognitive flexibility (TMT-B response time) and cardiovascular endurance (20-meter shuttle run count and maximal oxygen consumption [VO2Max]); thereafter, a simple main effect test (Bonferroni method) was conducted. The results revealed that the intervention group's cognitive flexibility (TMT-B response time) and cardiovascular endurance (20-meter shuttle run count and VO2Max) significantly improved post-intervention compared to the control group. These findings suggest that continuously playing Onigokko can significantly enhance both cognitive flexibility and cardiovascular endurance among early elementary school students. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Gene Therapy Approach for Treatment of Obese Agouti Mice.
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Yunin, Maxim A., Boychenko, Stanislav S., Lebedev, Petr, Deykin, Alexey V., Pokrovskii, Mikhail V., and Egorov, Alexander D.
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WEIGHT loss , *WHITE adipose tissue , *BROWN adipose tissue , *INSULIN resistance , *GENE therapy , *ADIPOSE tissues - Abstract
Obesity is a significant metabolic disorder associated with excessive fat accumulation and insulin resistance. In this study, we explored a gene therapy approach to treat obesity in agouti mice using adeno-associated viruses (AAVs) carrying PRDM16, FoxP4, or Follistatin (FST) genes, which are known to promote the browning of white adipose tissue. Mice treated with AAVs encoding PRDM16, FoxP4, or FST genes showed a reduction in body weight (10–14%) within the first three weeks after administration, compared to the control groups. A lipidomic analysis of the adipose tissue revealed a dramatic reduction in triacylglycerol (TAG) species with low carbon numbers (40–54 acyl carbons) in treated mice. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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5. Research Progress on Vacuum Solid-State Reaction Preparation and Lattice Substitution of TAG Magneto-Optic Ceramics.
- Author
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CHEN Jie, SHEN Shiji, TIAN Yanna, and ZHOU Shengming
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TRANSPARENT ceramics , *CERAMICS , *SOLID-state lasers , *GARNET , *TERBIUM , *SINTERING - Abstract
As a typical garnet transparent ceramic used in high-energy solid-state laser systems, terbium aluminum garnet (Tb3Al5O12, TAG) magneto-optic ceramics have become a focal point of research due to their excellent magneto-optic properties and high-power performance. This paper focuses on TAG magneto-optic ceramics prepared by vacuum solid-state reaction, with particular emphasis on the optimization of sintering aids and lattice doping modifications. By comparison, the most suitable additives for TAG ceramics were identified. The study highlights the longstanding challenge in improving the quality of TAG ceramics, which arises from the reliance on large doses of sintering aids and the resulting compositional inhomogeneity caused by sintering aid residues. To address these issues, we present our latest research, which involves co-doping the lattice with Mg2+ and Si4+. This approach enables the preparation of higher optical quality TAG ceramics via a one-step vacuum solid-state sintering process, without reducing the absolute amount of MgO and TEOS. The best sample achieve a transmittance of 82.48% at 1 064 nm, which, to our knowledge, is the highest value reported using a similar sintering method based on domestic powders. This lattice doping strategy, rather than the traditional mass-ratio addition of sintering aids, offers a promising new approach for further improving the quality of garnet transparent ceramics used in high-energy laser systems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
6. The effect of playing Onigokko on children’s executive function and cardiovascular endurance in the early elementary school grades
- Author
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Sho Aoyama
- Subjects
Cognitive flexibility ,Physical fitness ,Tag ,Medicine ,Science - Abstract
Abstract This study investigated whether continuously playing Onigokko, a game similar to tag, could enhance children’s cognitive flexibility, a component of executive function, and improve cardiovascular endurance. The intervention group comprised 34 students enrolled in the second-grade A class of H elementary school in Y prefecture. The control group comprised 34 students enrolled in the second-grade B class at the same school. Cognitive flexibility was assessed using the Trail Making Test Task B (TMT-B), while cardiovascular endurance was measured using a 20-meter shuttle run. These measurements were taken for both groups before and after four weeks playing Onigokko with the intervention group. A two-way ANOVA was applied for each measurement item, considering the group (intervention and control groups) and measurement period (pre and post). A significant interaction was found between cognitive flexibility (TMT-B response time) and cardiovascular endurance (20-meter shuttle run count and maximal oxygen consumption [VO2Max]); thereafter, a simple main effect test (Bonferroni method) was conducted. The results revealed that the intervention group’s cognitive flexibility (TMT-B response time) and cardiovascular endurance (20-meter shuttle run count and VO2Max) significantly improved post-intervention compared to the control group. These findings suggest that continuously playing Onigokko can significantly enhance both cognitive flexibility and cardiovascular endurance among early elementary school students.
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- 2024
- Full Text
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7. Lightweight mutual Authentication Protoco lfor IoT devices using Elliptical Curves
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Vandani Verma
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reader ,tag ,authentication ,rfid ,iot ,elliptical curves ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Telecommunication ,TK5101-6720 - Abstract
The Internet of Things (IoT) has now permeated every aspect of modern life, requiring that all things be connected to one another and to the Internet using proper protocols. IoT, being an essential component of today's smart society is experiencing enormous problems from various security and interoperability attacks. Traditional encryption is unsuitable for low-cost IoTs because they are vulnerable to physical attacks. This paper proposes Lightweight mutual Authentication Protocol for IoT devices based on hash function using Elliptical Curve approach in which mutual authentication between RFID Tag and Reader is established through several rounds of communication. We also compare the proposed approach of authentication at both ends (Tag and Reader) in terms of efficiency and security.
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- 2024
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8. Facile and Scalable Synthesis of Tripeptides with a Pro‐Pro Scaffold at C‐end: A TAG Approach.
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Nagaraja, Akshitha D., Avula, Veeranjaneyulu, Lalithamba, H. S., Rao, H. Surya Prakash, and Govindappa, Nagendra
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TRIPEPTIDES , *FERMENTED milk , *DIETARY supplements , *PEPTIDES , *ACE inhibitors - Abstract
The Pro‐Pro ligated tripeptides Ile‐Pro‐Pro 4 (IPP) and Val‐Pro‐Pro 5 (VPP) isolated from the fermented milk exhibit marked anti‐hypertension activity. Additionally, the naturally occurring Pro‐Pro ligated tripeptide Gly‐Pro‐Pro 6 (GPP) exhibits antioxidant properties. These peptides have enormous potential to be used as dilatory supplements. In the present study, we achieved a scalable, convenient, and high‐yielding synthesis of IPP, VPP, and GPP along with two more hydrophobic Pro‐Pro ligated tripeptides (APP 7, LPP 8) by employing the TAG technique. We used acid labile (2,4‐bis(octadecyloxy)phenyl)methanol as the TAG. We demonstrated synthesis of one of IPP at molar scale. We think that our method has the potential to be escalated to an industrial scale without much difficulty and they become available for general use as dietary supplements. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Identification of the Oleosin Genes and Functional Analysis of CeOle4 Gene in Cyperus esculentus L.
- Author
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Dong, Yuanyuan, Cui, Yuling, Wang, Yijin, Luan, Shiyu, Liu, Xinyi, Yang, Qi, Liu, Weican, Li, Xiaowei, Wang, Nan, Wang, Fawei, Gu, Lei, and Xue, Ping
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YELLOW nutsedge ,GENE expression ,CYTOSKELETAL proteins ,LIPID synthesis ,GENE families - Abstract
Tiger nut is the tuber of the perennial herbaceous plant Cyperus esculentus L., whose unique underground tubers are not only the main reproductive organ but also an important oil storage site. Oleosin is the most abundant structural protein in the oil body, which is an important membrane structural protein, playing a role in the formation and stability of lipid droplets in oilseed crops. Most studies have focused on the oleosin in oilseeds, but rarely on the oil containing tuber. In this study, nine oleosin genes from the Cyperus esculentus transcriptome were identified and divided into two groups via phylogenetic analysis. The expression patterns of the nine oleosins were examined through quantitative real-time PCR (qRT-PCR) in various development stages of stem tissue (35 d, 50 d, 75 d, 90 d, and 120 d after sowing). The subcellular localization of CeOle4 indicated that this protein was localized exclusively to membrane, indicating that it functioned in the plasma membrane. The highly expressed gene CeOle4 within the CeOleosin gene family was further transformed into yeast cells and plant materials. The results demonstrate that CeOle4 can promote lipid synthesis, enhancing the stability of oil lipids at low temperature and changing seed phenotypic traits. This discovery addresses and enriches the research on the function of CeOleosin genes and lays the groundwork for future studies on novel and superior transgenic crops related to tiger nut. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Elasmobranch Mark–Recapture Experiment off the Balearic Islands: Insight into Scyliorhinus canicula Growth, Mobility, and Population Size.
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Ferragut-Perello, Francesca, Sánchez-Zulueta, Paula, Ramírez-Amaro, Sergio, Farriols, Maria Teresa, Pasini, Noemi, Guijarro, Beatriz, Rodríguez-Cabello, Cristina, and Ordines, Francesc
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NUMBERS of species , *DREDGING (Fisheries) , *CHONDRICHTHYES , *ISLANDS , *POPULATION dynamics , *POPULATION biology , *SHARKS , *FISH populations - Abstract
Despite the high diversity of elasmobranch fishes in the Balearic Islands, knowledge of their biology and population dynamics is still scarce. A recent mark-and-recapture experiment off the Balearic Islands tagged 3738 individuals of 23 shark and batoid species during MEDITS and CANAL bottom trawl scientific surveys from June 2021 to August 2023. Retrieval was reported for the sharks Scyliorhinus canicula and Mustelus mustelus, revealing relatively small home ranges for these species (0.2–38.5 km and 7.8–15.3 km for S. canicula and M. mustelus, respectively). Recapture efficiency was higher from scientific surveys than from commercial catches, highlighting potential challenges in collaboration with fishermen and recapture reports. Density estimates obtained from the MEDITS bottom trawl survey suggest a much larger population for S. canicula than estimates from the mark–recapture data, indicating MEDITS density estimates for this species may be overestimated due to its scavenger behavior perhaps favoring individuals searching for discards aggregated in the fishing grounds. This study emphasizes the importance of monitoring, collaborative efforts, and improved reporting mechanisms to enhance our understanding of elasmobranch populations and provide support for sustainable management of these vulnerable marine species. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Glut1 Functions in Insulin-Producing Neurons to Regulate Lipid and Carbohydrate Storage in Drosophila.
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Kauffman, Matthew R. and DiAngelo, Justin R.
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GLUCOSE transporters , *GENETIC testing , *GLYCOGEN , *DROSOPHILA , *WORLD health - Abstract
Obesity remains one of the largest health problems in the world, arising from the excess storage of triglycerides (TAGs). However, the full complement of genes that are important for regulating TAG storage is not known. The Glut1 gene encodes a Drosophila glucose transporter that has been identified as a potential obesity gene through genetic screening. Yet, the tissue-specific metabolic functions of Glut1 are not fully understood. Here, we characterized the role of Glut1 in the fly brain by decreasing neuronal Glut1 levels with RNAi and measuring glycogen and TAGs. Glut1RNAi flies had decreased TAG and glycogen levels, suggesting a nonautonomous role of Glut1 in the fly brain to regulate nutrient storage. A group of hormones that regulate metabolism and are expressed in the fly brain are Drosophila insulin-like peptides (Ilps) 2, 3, and 5. Interestingly, we observed blunted Ilp3 and Ilp5 expression in neuronal Glut1RNAi flies, suggesting Glut1 functions in insulin-producing neurons (IPCs) to regulate whole-organism TAG and glycogen storage. Consistent with this hypothesis, we also saw fewer TAGs and glycogens and decreased expression of Ilp3 and Ilp5 in flies with IPC-specific Glut1RNAi. Together, these data suggest Glut1 functions as a nutrient sensor in IPCs, controlling TAG and glycogen storage and regulating systemic energy homeostasis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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12. The synthesis of triacylglycerol by diacylglycerol acyltransferases (CsDGAT1A and CsDGAT2D) is essential for tolerance of cucumber’s resistance to low-temperature stress.
- Author
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Wang, Xue, Zhan, Wei, Zhou, Shuang, He, Siyao, Wang, Siqi, Yu, Yang, and Fan, Haiyan
- Abstract
Key message: CsDGAT1A and CsDGAT2D play a positive regulatory role in cucumber's response to low-temperature stress and positively regulate the synthesis of triacylglycerol (TAG). Triacylglycerol (TAG), a highly abundant and significant organic compound in plants, plays crucial roles in plant growth, development, and stress responses. The final acetylation step of TAG synthesis is catalyzed by diacylglycerol acyltransferases (DGATs). However, the involvement of DGATs in cucumber's low-temperature stress response remains unexplored. This study focused on two DGAT genes, CsDGAT1A and CsDGAT2D, investigating their function in enhancing cucumber’s low-temperature stress tolerance. Our results revealed that both proteins were the members of the diacylglycerol acyltransferase family and were predominantly localized in the endoplasmic reticulum. Functional analysis demonstrated that transient silencing of CsDGAT1A and CsDGAT2D significantly compromised cucumber’s low-temperature stress tolerance, whereas transient overexpression enhanced it. Furthermore, the TAG content quantification indicated that CsDGAT1A and CsDGAT2D promoted TAG accumulation. In conclusion, this study elucidates the lipid metabolism mechanism in cucumber’s low-temperature stress response and offers valuable insights for the cultivation of cold-tolerant cucumber plants. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Engineering PE6 prime editors to efficiently insert tags in rice.
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Xu, Rongfang, Ma, Chong, Sheng, Jiaqi, Zhu, Jiahui, Wang, Dongmei, Liu, Xiaoshuang, Wang, Qing, Li, Juan, Qin, Ruiying, and Wei, Pengcheng
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STOP codons , *PLANT genes , *TRANSGENIC plants , *PLANT proteins , *STRUCTURAL stability , *TAGS (Metadata) , *CRISPRS - Published
- 2024
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14. Development and Realization of Bigram Models for Recognizing Homonyms in the Uzbek Language
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Abjalova, Manzura, Tukeyev, Ualsher, Abduraxmanova, Mukaddas, Adilova, Munojot, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Nguyen, Ngoc Thanh, editor, Chbeir, Richard, editor, Manolopoulos, Yannis, editor, Fujita, Hamido, editor, Hong, Tzung-Pei, editor, Nguyen, Le Minh, editor, and Wojtkiewicz, Krystian, editor
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- 2024
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15. Separation of Lipid Classes by Solid Phase Extraction for Subsequent Analysis
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Viau, Michelle, Kermarrec, Alice, Meynier, Anne, Sant'Ana, Anderson S., Series Editor, Lopez, Christelle, editor, Genot, Claude, editor, and Riaublanc, Alain, editor
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- 2024
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16. Schlaf und Temperament in der frühen Kindheit
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Williams, Kate E. and Križan, Zlatan, editor
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- 2024
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17. Preparation of Electrically Conductive Silver Ink for Silk-Screen Printing Near Field RFID Tag for Identification Applications
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Researcher. Tamer Mohamed Rabie Ali Sayed
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radio ,frequency ,identification ,multi-resonator ,rfid ,tag ,near ,field ,sensing. ,Architecture ,NA1-9428 - Abstract
The present paper introduces the analysis and design of a near-field RFID tag for IoT in the sub-six GHz 5G frequency band, the proposed radio frequency identification technique is based on the near-field interaction between the RFID tag and a wideband antenna reader. This near-field interaction adjusts the resonances of the wideband antenna according to the used RFID tag. In addition, the far field RCS of the RFID tag is also investigated to study the relationship between the near field and the far field responses of the proposed RFID tag. The proposed RFID tag is characterized by adjustable six resonances based on concentric square rings printed on a dielectric slab. For manufacturing and experimental verification, the dielectric slab is assumed to be FR-4. However, the proposed structure can be generalized to other thin and flexible substrates like paper, plastic, and textile.
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- 2024
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18. Educational intervention based on the extended parallel process model improves adherence to diabetic diet and glycaemic control indices: a randomised, double-blind, controlled, factorial field trial.
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Dehghan, Tayebe, Mohsenpour, Mohammad Ali, Karimi, Masoud, Mehrabi, Manoosh, Zare, Morteza, Akbarzadeh, Marzieh, Kohansal, Atefeh, Fathi, Fatemeh, and Sohrabi, Zahra
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INTELLECT ,HIGH density lipoproteins ,CONCEPTUAL models ,SELF-efficacy ,GLYCOSYLATED hemoglobin ,EDUCATIONAL outcomes ,LIPIDS ,STATISTICAL sampling ,BLIND experiment ,DESCRIPTIVE statistics ,RANDOMIZED controlled trials ,PSYCHOLOGY ,ATTITUDE (Psychology) ,BLOOD sugar ,WAIST circumference ,LOW density lipoproteins ,TYPE 2 diabetes ,ANTHROPOMETRY ,HEALTH education ,CARBOHYDRATE metabolism ,NUTRITION education ,DIET therapy for diabetes - Abstract
Nutritional education is pivotal in the medical nutritional therapy of type 2 diabetes mellitus (T2DM). The extended parallel process model (EPPM) is a health education method for inducing desirable health behaviours. The present study aimed to investigate the effect of nutritional education based on the EPPM in T2DM patients on knowledge, attitude, practice, anthropometric indices, glycaemic factors, lipid profile and adherence to the diabetic diet. A randomised, double-blind, controlled, factorial field trial was designed for T2DM patients aged 30–59 years (n 88). Participants were randomly allocated into four groups to receive EPPM-based nutritional education through gain framed message (GFM), loss framed message (LFM), their combination (G\LFM) or usual diabetic education in the control group (CG). Participants were assessed before and after the study duration. After 3 months of intervention, eighty participants finished the study. The EPPM-based intervention increased participants' knowledge, behavioural intention, perceived sensitivity, severity, self-efficacy (P < 0·001 for all) and response efficacy (P = 0·029) in comparison with CG. GFM (P = 0·004) and G\FLM (P = 0·034) reduced carbohydrate intake and LFM (P = 0·034) and G\LFM (P = 0·047) decreased fat intake. Between-group analysis indicated interventions reduced weight (P = 0·046), BMI (P = 0·038), fasting blood sugar (P = 0·030), 2-hour postprandial blood glucose (P = 0·027) and TAG (P = 0·002) in comparison with the CG. Results were NS for protein intake, waist and hip circumference, waist:hip ratio, HbA1c, total cholesterol, LDL and HDL. Nutritional education based on EPPM could increase the knowledge and awareness of T2DM patients. Also, it could be beneficial for blood glucose amendment. Further investigations are recommended. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Graffiti Identification System Using Low-Cost Sensors.
- Author
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García García, Miguel, González Arrieta, Angélica, Rodríguez González, Sara, Márquez-Sánchez, Sergio, and Da Silva Ramos, Carlos Fernando
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SYSTEM identification ,GRAFFITI ,IMAGE color analysis ,GRAFFITI artists ,DETECTORS - Abstract
This article introduces the possibility of studying graffiti using a colorimeter developed with Arduino hardware technology according to the Do It Yourself (DIY) philosophy. Through the obtained Red Green Blue (RGB) data it is intended to study and compare the information extracted from each of the graffiti present on different walls. The same color can be found in different parts of a single graffiti, but also in other graffiti that could a priori be of different authorship. Nevertheless, graffiti may be related, and it may be possible to group graffiti artists and "gangs" that work together. The methodology followed for the construction of the colorimeter and its real application in a practical case are described in four case studies. The case studies describe how graffiti were identified and recognized and they provide a comparison of the collected color samples. The results show the added value of the colorimeter in the graffiti recognition process, demonstrating its usefulness on a functional level. Finally, the contributions of this research are outlined, and an analysis is carried out of the changes to be made to the proposed method in the future, for improved graffiti color identification. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. DETERMINING THE EFFICIENCY OF TECHNIQUES FOR OPTIMIZING THE NUMBER OF TAGS IN MODERN HUMANMACHINE INTERFACES UNDER CONDITIONS OF LIMITED RESOURCES.
- Author
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Polupan, Volodymyr, Mirkevych, Roman, Pupena, Oleksandr, Klymenko, Oleh, and Mirkevych, Oleksii
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PROGRAMMABLE controllers ,SUPERVISORY control & data acquisition systems ,FREQUENCY changers ,RESEARCH methodology ,ACTUATORS - Abstract
The object of this study is modern Human-Machine Interfaces (HMI) and SCADA systems in the industry. The subject of research is techniques for optimizing the number of tags (variables) in the SCADA/HMI environment to enhance resource utilization efficiency. One of the challenges in creating SCADA/HMI-based solutions can be the number of tags (variables) in the runtime environment. A large number of tags can lead to a problem of limited available resources. The technique presented here allow for the optimization of the number of tags used in HumanMachine Interface systems built with SCADA software and operator panels in combination with Programmable Logic Controllers (PLCs). An evaluation of the efficiency of techniques for reducing the number of HMI tags was conducted on an experimental configuration consisting of objects such as discrete input/output, analog input/output, actuators such as valves with discrete/analog control, and drives with frequency converters. The optimization coefficient, defined as the ratio of the number of input/output tags used directly to the number of tags after applying the optimization principle, was used as the efficiency criterion. Depending on the techniques and their combinations, the criterion values reached orders of 4, 10, and in one case even more than 100. These values are explained by the application of multiplexing approaches and various packing techniques. The advantages and disadvantages of the reported techniques, as well as their application limitations, have been identified. Some techniques are suitable only for specific tasks. These techniques could be applied in practical implementation when designing modern high-efficiency Human-Machine Interfaces under conditions of limited resources. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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21. Transcriptomic and lipidomic analysis of the differential pathway contribution to the incorporation of erucic acid to triacylglycerol during Pennycress seed maturation.
- Author
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Claver, Ana, Luján, Maria Ángeles, Escuín, José Manuel, Schilling, Marion, Jouhet, Juliette, Savirón, María, López, M. Victoria, Picorel, Rafael, Jarne, Carmen, Cebolla, Vicente L., and Alfonso, Miguel
- Subjects
GENE expression ,TRANSCRIPTOMES ,LYSOPHOSPHOLIPIDS ,ACYLTRANSFERASES ,OILSEEDS ,FATTY acid analysis ,TRIGLYCERIDES - Abstract
Thlaspi arvense (Pennycress) is an emerging feedstock for biofuel production because of its high seed oil content enriched in erucic acid. A transcriptomic and a lipidomic study were performed to analyze the dynamics of gene expression, glycerolipid content and acyl-group distribution during seed maturation. Genes involved in fatty acid biosynthesis were expressed at the early stages of seed maturation. Genes encoding enzymes of the Kennedy pathway like diacylglycerol acyltransferase1 (TaDGATl), lysophosphatidic acid acyltransferase (TaLPAT) or glycerol 3-phosphate acyltransferase (TaGPAT) increased their expression with maturation, coinciding with the increase in triacylglycerol species containing 22:1. Positional analysis showed that the most abundant triacylglycerol species contained 18:2 at sn-2 position in all maturation stages, suggesting no specificity of the lysophosphatidic acid acyltransferase for very long chain fatty acids. Diacylglycerol acyltransferase2 (TaDGAT2) mRNA was more abundant at the initial maturation stages, coincident with the rapid incorporation of 22:1 to triacylglycerol, suggesting a coordination between Diacylglycerol acyltransferase enzymes for triacylglycerol biosynthesis. Genes encoding the phospholipid-diacylglycerol acyltransferase (TaPDAT1), lysophosphatidylcholine acyltransferase (TaLPCAT) or phosphatidylcholine diacylglycerolcholine phosphotransferase (TaPDCT), involved in acyl-editing or phosphatidyl-choline (PC)-derived diacylglycerol (DAG) biosynthesis showed also higher expression at the early maturation stages, coinciding with a higher proportion of triacylglycerol containing C18 fatty acids. These results suggested a higher contribution of these two pathways at the early stages of seed maturation. Lipidomic analysis of the content and acyl-group distribution of diacylglycerol and phosphatidyl-choline pools was compatible with the acyl content in triacylglycerol at the different maturation stages. Our data point to a model in which a strong temporal coordination between pathways and isoforms in each pathway, both at the expression and acyl-group incorporation, contribute to high erucic triacylglycerol accumulation in Pennycress. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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22. Wireless Power Supply Sensing Tags Based on Anti-Collision Algorithm for Sensing Systems
- Author
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Daneng Pi
- Subjects
Anti-collision algorithm ,sensing ,wireless ,passive ,tag ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
In wireless sensor networks, sensing tags are battery powered, which also limits the battery life. Therefore, it is particularly important to study self powered sensing tags. At present, passive wireless identification systems can achieve self powered communication through tags. However, wireless power supply sensing systems have problems such as low efficiency and short communication distance. To reduce the power consumption of sensing tags and improve the efficiency of sensing systems, a passive wireless low-power hydrogen concentration sensing system is designed. To further reduce the power consumption of sensing tags, a passive wireless magnetic field intensity sensing system is developed. In addition, to solve the low efficiency of multiple sensing labels in wireless power supply sensing systems, an efficient anti-collision algorithm based on dynamic binary query trees is designed. According to the research results, in the cold start indoor environment, the energy collection rate of the sensing tag designed in the research was 0.081mJ/s, and the energy collection efficiency was 25.7%. In single/dual sensor mode, the maximum values of sensing error were 2.1% and 5.2%, respectively. The maximum recognition time of the anti-collision algorithm based on dynamic multi base query tree was 2.78s, and the minimum value was 1.31s. The research results can provide methodological and technical support for the improvement of wireless power supply sensing systems, expanding the application range of wireless power supply sensing systems.
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- 2024
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23. Microalgal lipid production: A comparative analysis of Nannochloropsis and Microchloropsis strains
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Abdelkarim, Omnia H., Wijffels, Rene H., and Barbosa, Maria J.
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- 2024
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24. Exploring the Formation of High Levels of Hydroxyl Dicarboxylic Acids at an Urban Background Site in South China.
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Huo, Yunxi, Lyu, Xiaopu, Yao, Dawen, Zhou, Beining, Yuan, Qi, Lee, Shun‐cheng, and Guo, Hai
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DICARBOXYLIC acids ,ORGANIC acids ,AIR masses ,MALIC acid ,AIR quality ,CARBONACEOUS aerosols - Abstract
Hydroxyl dicarboxylic acids (OHDCA) are ubiquitous in the atmosphere as an important constituent of secondary organic aerosol, yet the formation mechanisms remain unclear. At an urban background site on the coast of South China, we observed notable levels of OHDCA, with the highest concentration of malic acid (a typical OHDCA species) reaching 533 ng m−3. In the coastal air, the correlation between OHDCA and sulfate was better (R2 = 0.48) in the period when the relative humidity was higher and the sulfate size distribution was in a droplet mode, fitting the features of aqueous formation. In the short‐range continental air, a significant rise in OHDCA levels from morning through early afternoon (588 ng m−3) was observed under marked daytime increment of ozone that was corrected for titration loss (O3_corr, sum of ozone and nitrogen dioxide). In addition, good correlation between OHDCA and O3_corr was identified in this period, illuminating the role for gas‐phase photochemistry in regulating OHDCA formation. Therefore, the elevated OHDCA was likely attributed to aqueous photooxidation, and the dominant factors varied under different atmospheric conditions. The precursors of OHDCA could be derived from biogenic emissions, as indicated by the correlations of OHDCA with 2‐methylglyceric acid (bihourly data) and isoprene and monoterpenes (daily average data). However, anthropogenic aromatics might also be involved in OHDCA formation, especially in the short‐range continental air. The formation mechanisms probed through observational evidence will be an important reference for rectifying simulations of OHDCA and its impact on air quality and climate. Plain Language Summary: Organic aerosol, a vital component of fine particulate matter, is suspended in the atmosphere. It is of widespread concern due to health and climate effects. In a coastal area generally considered clean, we observed remarkably high levels of climate‐relevant hydroxyl dicarboxylic acids in organic aerosol. Different factors dominated the aqueous photochemical formation of hydroxyl dicarboxylic acids between air masses arriving at the measurement site. This provides a scientific basis for mitigating organic aerosol and its climate effects. Key Points: The concentrations of hydroxyl dicarboxylic acids (OHDCA) in Hong Kong's air were among the highest in the worldAqueous and photochemical processes dominated OHDCA formation in the coastal and short‐range continental air, respectivelyAromatic compounds were likely one of the precursors of OHDCA in continental outflows [ABSTRACT FROM AUTHOR]
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- 2024
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25. Trans‐oceanic subsurface photovoltaic performance.
- Author
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Krawczyk, Collin A., Shafer, Michael W., Flikkema, Paul G., Rose Holser, Rachel, and Costa, Daniel
- Subjects
ANIMAL radio tracking ,PHOTOVOLTAIC power systems ,ELEPHANT behavior ,PHOTOVOLTAIC cells ,ENERGY harvesting ,AUTONOMOUS underwater vehicles - Abstract
Utilization of marine photovoltaic energy is primarily focused on surface harvesting with limited photovoltaic cell implementations in submarine environments. Potential applications include marine wildlife telemetry devices, autonomous underwater vehicles, or remote sensing assets. In these applications, understanding the power at depth is critical, but there has yet to be a long‐term study of cell performance in a realistic marine environment that spans time, geographic location, and depth. In this paper, we present photovoltaic assessments carried out by devices mounted to adult female northern elephant seals (Mirounga angustirostris) during their spring migrations in the Pacific Ocean with deployment times between 76 and 107 days. Encompassing a large geographic area between Santa Cruz, California, and the Aleutian Islands of Alaska during their migrations, elephant seal behavior allows for repeated depth profiles each day, making them an ideal host for subsurface power assessments. This paper presents the first longitudinal study of photovoltaic cell performance in the marine environment that spans location, time, and depth. This work discusses the calibration, data time alignment, and power calculations of these oceanic deployments. Deployment results, including power results and energy predictions from the data record, are presented up to 22 m in depth. We highlight how the recorded power data of these cells compares to previously published results and how depth impacts subsurface power and energy harvesting. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. The impact of dairy matrix structure on postprandial lipid responses.
- Author
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Kjølbæk, Louise and Raben, Anne
- Abstract
This review presents evidence related to the postprandial responses after consumption of dairy products focusing on the effect of the dairy matrix and lipid response, which was also presented as part of a speech at the Nutrition Society Winter Conference, January 2023. The key findings are that the dairy product(s) that differentiate from others in the postprandial TAG response are products with a semi-solid structure. There were no differences in lipid responses between cheese and butter. The main factors viscosity, fat globule size and milk fat globule membrane do not seem to explain the effect of the dairy matrix in the acute postprandial response. In summary, it is very difficult to investigate the effects of the dairy matrix per see and with the few studies conducted to date, no clear cause and effect can be established. Future research should focus on the semi-solid dairy matrix, and studies investigating specifically the yoghurt matrix are warranted. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. التحليل العلامي للعناصر التيبوغرافية في تصميم شعارات مراكز التسويق المنزلي (المولات).
- Author
-
سند فؤاد محمد
- Abstract
Copyright of Al-Academy is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) 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.)
- Published
- 2024
- Full Text
- View/download PDF
28. USE OF KNOWN INDIVIDUAL MARKING IN RESEARCH AND MONITORING OF FRESHWATER TURTLE POPULATIONS - TESTING THE METHOD ON SOUTH AMERICAN SPECIES (TESTUDINES: PODOCNEMEDIDAE).
- Author
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Cunha, Fábio Andrew G. and Ándrade, Marcelo
- Subjects
- *
WILDLIFE conservation , *TURTLES , *TURTLE populations , *REPTILES , *RESEARCH personnel - Abstract
The marking or tagging of turtles is a widely used to facilitate the monitoring of population demography, structure, and conservation of species. Even though they are used in many studies of turtle demography, the available methods are not very efficient, except for microchips (Passive Intergraded Transponder/PIT tags); however, the latter is too expensive to be used on a large scale. Here we present a viable, cost-effective tagging alternative that uses a durable plastic cattle tag and pin. Turtles in the genus Podocnemis were tagged in the Lower-Amazon region, west of the state of Para, Amazon, Brazil. This method is highly recommended for future work on monitoring and population structure of large species of freshwater turtles. In addition to feasibility, it can be used in the form of citizen science, as the information can be obtained by laypeople and taken to researchers and conservationists. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
29. UPSRVNet: Ultralightweight, Privacy preserved, and Secure RFID-based authentication protocol for VIoT Networks.
- Author
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Kumar, Rakesh, Singh, Sunil K., and Lobiyal, D. K.
- Subjects
- *
COMPUTER network protocols , *DATA privacy , *INTELLIGENT transportation systems , *PRIVACY , *WIRELESS channels - Abstract
Vehicular Internet of Things (VIoT) refers to integrating Internet of Things (IoT) technology into the transportation sector, specifically vehicles. It aims to enhance transportation safety, efficiency, and sustainability by using connected devices and real-time data exchange between vehicles, road infrastructure, and transportation management systems. RFID can provide valuable insights into the functioning and performance of vehicles, enabling the development of intelligent transportation systems and contributing to the growth of the VIoT. To secure essential driving data tag location, data privacy, and road safety are the primary concerns in the VIoT system. An attacker can perform a variety of attacks on the tag and compromise its privacy through the wireless channel between it and the reader. To ensure secure communication for the various application of the VIoT system, An RFID-based protocol is proposed, which is referred to as UPSRVNet (Ultralightweight, Privacy preserved, and Secure RFID-based authentication protocol for VIoT Networks). The proposed protocol guarantees secure authentication in VIoT networks using ultralightweight, privacy-preserving RFID tags by substituting bit formation and right-shift rotation for high-computing operations like hash functions and encryption/decryption algorithms. It also reduces RFID tags' storage and communication overhead and aims to secure the driver's location, personal information, and resistance from known attacks. As per the experiment result, the proposed UPSRVNet protocol showed a significant reduction in communication overhead between tag and reader, that is 50%, and the storage cost on the tag is also reduced by 33.33% compared to existing protocols. Due to this, the certification and authentication processes may be performed quickly. The protocol ensured the security requirements by informal analysis using the Scyther tool. A comprehensive analysis of the proposed protocol reveals its substantial advantages over the existing protocol concerning computation complexity, communication efficacy, and storage expenditure. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. БИНАРЛЫҚ ТЕРМИНДЕРДІҢ ФОРМАЛДЫҚ-ҚҰРЫЛЫМДЫҚ МОДЕЛЬДЕРІ.
- Author
-
Абдикарим Н., Ысқақ Б. Д., and Махсуд О. Ж.
- Abstract
Copyright of Bulletin of Ablai Khan KazUIRandWL: Series 'Philological sciences' is the property of Kazakh Ablai Khan University of International Relations & World Languages 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.)
- Published
- 2024
- Full Text
- View/download PDF
31. Transcriptomic and lipidomic analysis of the differential pathway contribution to the incorporation of erucic acid to triacylglycerol during Pennycress seed maturation
- Author
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Ana Claver, María Ángeles Luján, José Manuel Escuín, Marion Schilling, Juliette Jouhet, María Savirón, M. Victoria López, Rafael Picorel, Carmen Jarne, Vicente L. Cebolla, and Miguel Alfonso
- Subjects
Thlaspi arvense ,seed ,oil ,TAG ,DGAT ,PDAT ,Plant culture ,SB1-1110 - Abstract
Thlaspi arvense (Pennycress) is an emerging feedstock for biofuel production because of its high seed oil content enriched in erucic acid. A transcriptomic and a lipidomic study were performed to analyze the dynamics of gene expression, glycerolipid content and acyl-group distribution during seed maturation. Genes involved in fatty acid biosynthesis were expressed at the early stages of seed maturation. Genes encoding enzymes of the Kennedy pathway like diacylglycerol acyltransferase1 (TaDGAT1), lysophosphatidic acid acyltransferase (TaLPAT) or glycerol 3-phosphate acyltransferase (TaGPAT) increased their expression with maturation, coinciding with the increase in triacylglycerol species containing 22:1. Positional analysis showed that the most abundant triacylglycerol species contained 18:2 at sn-2 position in all maturation stages, suggesting no specificity of the lysophosphatidic acid acyltransferase for very long chain fatty acids. Diacylglycerol acyltransferase2 (TaDGAT2) mRNA was more abundant at the initial maturation stages, coincident with the rapid incorporation of 22:1 to triacylglycerol, suggesting a coordination between Diacylglycerol acyltransferase enzymes for triacylglycerol biosynthesis. Genes encoding the phospholipid-diacylglycerol acyltransferase (TaPDAT1), lysophosphatidylcholine acyltransferase (TaLPCAT) or phosphatidylcholine diacylglycerolcholine phosphotransferase (TaPDCT), involved in acyl-editing or phosphatidyl-choline (PC)-derived diacylglycerol (DAG) biosynthesis showed also higher expression at the early maturation stages, coinciding with a higher proportion of triacylglycerol containing C18 fatty acids. These results suggested a higher contribution of these two pathways at the early stages of seed maturation. Lipidomic analysis of the content and acyl-group distribution of diacylglycerol and phosphatidyl-choline pools was compatible with the acyl content in triacylglycerol at the different maturation stages. Our data point to a model in which a strong temporal coordination between pathways and isoforms in each pathway, both at the expression and acyl-group incorporation, contribute to high erucic triacylglycerol accumulation in Pennycress.
- Published
- 2024
- Full Text
- View/download PDF
32. Lipid accumulation mechanism of Amphora coffeaeformis under nitrogen deprivation and its application as a feed additive in Carassius auratus aquaculture
- Author
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Yulin Cui, Kang Wang, Xiuzhi Zhou, Chunxiao Meng, and Zhengquan Gao
- Subjects
Amphora coffeaeformis ,Nitrogen deprivation ,Lipid accumulation ,RNA-seq ,TAG ,Crucian carp ,Biotechnology ,TP248.13-248.65 ,Fuel ,TP315-360 - Abstract
Abstract Background Amphora coffeaeformis, a unicellular diatom, can significantly accumulate lipids under nitrogen (N) limitation. However, the molecular mechanism underlying lipid accumulation in A. coffeaeformis remains unknown and its application development is lagging. Results This work analyzed the lipid composition of A. coffeaeformis under N deprivation and investigated its mechanism underlying lipid accumulation using RNA-seq. The results showed that the total lipid content of A. coffeaeformis increased from 28.22 to 44.05% after 5 days of N deprivation, while the neutral lipid triacylglycerol (TAG) content increased from 10.41 to 25.21%. The transcriptional profile showed that N deprivation induced wide-ranging reprogramming of regulation and that most physiological activities were repressed, while the upregulation of glycerol-3-phosphate acyltransferase directly determined TAG accumulation. Moreover, we explored the effect of A. coffeaeformis as a food additive on the lipid composition of crucian carp. The results showed that the contents of unsaturated fatty acids in the meat of fish supplemented with A. coffeaeformis were significantly increased, indicating its potential application in animal nutrition for improving meat quality indicators. Conclusion The findings shed light on the molecular mechanisms of neutral lipid accumulation and revealed the key genes involved in lipid metabolism in A. coffeaeformis. Moreover, we also confirmed that A. coffeaeformis can be used as feed additive for improving the lipid composition of crucian carp meat, which provided evidence for the biotechnology application of this high-oil microalgae.
- Published
- 2023
- Full Text
- View/download PDF
33. The concentration of free glycerol in goat milk increases during feed restrictions.
- Author
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Larsen, Torben
- Abstract
This Research Communication introduces a novel enzymatic-fluorometric analytical procedure for glycerol and glycerol 3-phosphate in milk. Milk from thirty-seven goats was analysed during 9 consecutive days during which a two-day feed restriction was introduced. Fractional milk triacylglyceride and free glycerol increased significantly while glycerol 3-phosphate reacted more moderately. The energy status of the mammary cell is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Identification of the Oleosin Genes and Functional Analysis of CeOle4 Gene in Cyperus esculentus L.
- Author
-
Yuanyuan Dong, Yuling Cui, Yijin Wang, Shiyu Luan, Xinyi Liu, Qi Yang, Weican Liu, Xiaowei Li, Nan Wang, Fawei Wang, Lei Gu, and Ping Xue
- Subjects
tiger nut ,oleosin ,oil content ,TAG ,cold stress ,Plant culture ,SB1-1110 - Abstract
Tiger nut is the tuber of the perennial herbaceous plant Cyperus esculentus L., whose unique underground tubers are not only the main reproductive organ but also an important oil storage site. Oleosin is the most abundant structural protein in the oil body, which is an important membrane structural protein, playing a role in the formation and stability of lipid droplets in oilseed crops. Most studies have focused on the oleosin in oilseeds, but rarely on the oil containing tuber. In this study, nine oleosin genes from the Cyperus esculentus transcriptome were identified and divided into two groups via phylogenetic analysis. The expression patterns of the nine oleosins were examined through quantitative real-time PCR (qRT-PCR) in various development stages of stem tissue (35 d, 50 d, 75 d, 90 d, and 120 d after sowing). The subcellular localization of CeOle4 indicated that this protein was localized exclusively to membrane, indicating that it functioned in the plasma membrane. The highly expressed gene CeOle4 within the CeOleosin gene family was further transformed into yeast cells and plant materials. The results demonstrate that CeOle4 can promote lipid synthesis, enhancing the stability of oil lipids at low temperature and changing seed phenotypic traits. This discovery addresses and enriches the research on the function of CeOleosin genes and lays the groundwork for future studies on novel and superior transgenic crops related to tiger nut.
- Published
- 2024
- Full Text
- View/download PDF
35. Glut1 Functions in Insulin-Producing Neurons to Regulate Lipid and Carbohydrate Storage in Drosophila
- Author
-
Matthew R. Kauffman and Justin R. DiAngelo
- Subjects
Drosophila ,Glut1 ,neurons ,Ilp3 ,Ilp5 ,TAG ,Microbiology ,QR1-502 - Abstract
Obesity remains one of the largest health problems in the world, arising from the excess storage of triglycerides (TAGs). However, the full complement of genes that are important for regulating TAG storage is not known. The Glut1 gene encodes a Drosophila glucose transporter that has been identified as a potential obesity gene through genetic screening. Yet, the tissue-specific metabolic functions of Glut1 are not fully understood. Here, we characterized the role of Glut1 in the fly brain by decreasing neuronal Glut1 levels with RNAi and measuring glycogen and TAGs. Glut1RNAi flies had decreased TAG and glycogen levels, suggesting a nonautonomous role of Glut1 in the fly brain to regulate nutrient storage. A group of hormones that regulate metabolism and are expressed in the fly brain are Drosophila insulin-like peptides (Ilps) 2, 3, and 5. Interestingly, we observed blunted Ilp3 and Ilp5 expression in neuronal Glut1RNAi flies, suggesting Glut1 functions in insulin-producing neurons (IPCs) to regulate whole-organism TAG and glycogen storage. Consistent with this hypothesis, we also saw fewer TAGs and glycogens and decreased expression of Ilp3 and Ilp5 in flies with IPC-specific Glut1RNAi. Together, these data suggest Glut1 functions as a nutrient sensor in IPCs, controlling TAG and glycogen storage and regulating systemic energy homeostasis.
- Published
- 2024
- Full Text
- View/download PDF
36. Elasmobranch Mark–Recapture Experiment off the Balearic Islands: Insight into Scyliorhinus canicula Growth, Mobility, and Population Size
- Author
-
Francesca Ferragut-Perello, Paula Sánchez-Zulueta, Sergio Ramírez-Amaro, Maria Teresa Farriols, Noemi Pasini, Beatriz Guijarro, Cristina Rodríguez-Cabello, and Francesc Ordines
- Subjects
batoids ,sharks ,movements ,tag ,recapture efficiency ,retrieval ,Biology (General) ,QH301-705.5 ,Genetics ,QH426-470 - Abstract
Despite the high diversity of elasmobranch fishes in the Balearic Islands, knowledge of their biology and population dynamics is still scarce. A recent mark-and-recapture experiment off the Balearic Islands tagged 3738 individuals of 23 shark and batoid species during MEDITS and CANAL bottom trawl scientific surveys from June 2021 to August 2023. Retrieval was reported for the sharks Scyliorhinus canicula and Mustelus mustelus, revealing relatively small home ranges for these species (0.2–38.5 km and 7.8–15.3 km for S. canicula and M. mustelus, respectively). Recapture efficiency was higher from scientific surveys than from commercial catches, highlighting potential challenges in collaboration with fishermen and recapture reports. Density estimates obtained from the MEDITS bottom trawl survey suggest a much larger population for S. canicula than estimates from the mark–recapture data, indicating MEDITS density estimates for this species may be overestimated due to its scavenger behavior perhaps favoring individuals searching for discards aggregated in the fishing grounds. This study emphasizes the importance of monitoring, collaborative efforts, and improved reporting mechanisms to enhance our understanding of elasmobranch populations and provide support for sustainable management of these vulnerable marine species.
- Published
- 2024
- Full Text
- View/download PDF
37. Characterization and Comparative Evaluation of Structural, Chemical, Thermal, Mechanical, and Morphological Properties of Plant Fibers
- Author
-
Khan, Sakib Hossain, Rahman, Md Zillur, Haque, Mohammad Rejaul, Hoque, Md Enamul, Jawaid, Mohammad, Series Editor, Khiari, Ramzi, editor, Jawaid, Mohammed, editor, and Belgacem, Mohamed Naceur, editor
- Published
- 2023
- Full Text
- View/download PDF
38. RFID Enabled Humidity Sensing and Traceability
- Author
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Anam, Hafsa, Abbas, Syed Muzahir, Collings, Iain, Mukhopadhyay, Subhas, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Suryadevara, Nagender Kumar, editor, George, Boby, editor, Jayasundera, Krishanthi P., editor, and Mukhopadhyay, Subhas Chandra, editor
- Published
- 2023
- Full Text
- View/download PDF
39. RFID (Radio Frequency Identification) Tag Collision Risk Mitigation Analysis and Avoidance
- Author
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Sukhwal, Aditya, Kundu, Gourab, Chakravorty, Chandrani, Xhafa, Fatos, Series Editor, Hemanth, Jude, editor, Pelusi, Danilo, editor, and Chen, Joy Iong-Zong, editor
- Published
- 2023
- Full Text
- View/download PDF
40. Improvement on Management of Tags Using an Event Queue
- Author
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Choi, Won Seok, Sohn, Kyu-Seek, Joe, Inwhee, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Silhavy, Radek, editor, Silhavy, Petr, editor, and Prokopova, Zdenka, editor
- Published
- 2023
- Full Text
- View/download PDF
41. Using Ultrawideband Technology to Control a Car to Reach Its Destination †.
- Author
-
Mischie, Septimiu and Munteanu, Ionela Alina
- Subjects
ULTRA-wideband communication ,MOBILE apps ,PERSONAL computers ,RASPBERRY Pi ,INDOOR positioning systems - Abstract
This paper presents a method that enables a small car to reach its destination in an indoor environment using ultrawideband technology. For this purpose, we used four anchors and one tag. The tag can move because it is fixed on the car. The anchors and the tag are DWM1001 modules. The configuration of the five DW1001 modules is performed through a smartphone application provided by the manufacturer. The car has been built by us. The controller of the car is a Raspberry Pi microcomputer which controls the driver of the car DC motors by generating PWM signals. In addition, Raspberry Pi communicates with the tag by the UART interface. Thus, our goal was to control the car to reach a certain destination (x
d , yd ) requested by the user via Wi-Fi. Because the car hosts the tag, it continuously updates its position according to the information received from the four anchors. We implemented two scenarios, considering the initial (x, y) position of the car. In the first scenario, which is simpler, the car moved to its destination either along the x-axis or along the y-axis. In the second scenario, the car moves along one of the axes and then turns 90 degrees to reach its destination. Experimental results that show the precision of the positioning system are presented. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
42. Lipid accumulation mechanism of Amphora coffeaeformis under nitrogen deprivation and its application as a feed additive in Carassius auratus aquaculture.
- Author
-
Cui, Yulin, Wang, Kang, Zhou, Xiuzhi, Meng, Chunxiao, and Gao, Zhengquan
- Subjects
- *
GOLDFISH , *UNSATURATED fatty acids , *CRUCIAN carp , *AMPHORAS , *LIPIDS - Abstract
Background: Amphora coffeaeformis, a unicellular diatom, can significantly accumulate lipids under nitrogen (N) limitation. However, the molecular mechanism underlying lipid accumulation in A. coffeaeformis remains unknown and its application development is lagging. Results: This work analyzed the lipid composition of A. coffeaeformis under N deprivation and investigated its mechanism underlying lipid accumulation using RNA-seq. The results showed that the total lipid content of A. coffeaeformis increased from 28.22 to 44.05% after 5 days of N deprivation, while the neutral lipid triacylglycerol (TAG) content increased from 10.41 to 25.21%. The transcriptional profile showed that N deprivation induced wide-ranging reprogramming of regulation and that most physiological activities were repressed, while the upregulation of glycerol-3-phosphate acyltransferase directly determined TAG accumulation. Moreover, we explored the effect of A. coffeaeformis as a food additive on the lipid composition of crucian carp. The results showed that the contents of unsaturated fatty acids in the meat of fish supplemented with A. coffeaeformis were significantly increased, indicating its potential application in animal nutrition for improving meat quality indicators. Conclusion: The findings shed light on the molecular mechanisms of neutral lipid accumulation and revealed the key genes involved in lipid metabolism in A. coffeaeformis. Moreover, we also confirmed that A. coffeaeformis can be used as feed additive for improving the lipid composition of crucian carp meat, which provided evidence for the biotechnology application of this high-oil microalgae. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. Design of a Multi-Standard UWB-LoRa Antenna Structure and Transceiver Board for High-Accuracy and Long-Range Localization Applications.
- Author
-
Benouakta, Amina, Nguyen, Thao Manh, Ferrero, Fabien, Lizzi, Leonardo, and Staraj, Robert
- Subjects
ANTENNAS (Electronics) ,DATA transmission systems ,POWER transmission ,INTERNET of things ,ELECTRONIC data processing ,WIRELESS LANs ,GATEWAYS (Computer networks) ,WIRELESS localization - Abstract
Long-Range Wide-Area Networks (LoRaWAN) allow the transmission of data via radio link from sensors, which are potentially isolated or difficult to access, to gateways and servers that are connected to cellular networks for data processing, exchange, or relay, with low transmission power. This concept employs Long-Range (LoRa) modulation and has led to the emergence of many applications for the monitoring and tracking of objects. However, due to its characteristic of a low data rate for low-power communication, the transmission of information with LoRa technology is not suitable for the fast real-time monitoring of data. Additionally, due to its narrow bandwidth, an attempt to perform localization through the LoRa modulation technique will result in very limited accuracy because of its inability to resolve multipath problems. Thus, in this paper, we propose a multi-standard Ultra-Wide Bandwidth (UWB) and LoRa end-device that is capable of measuring location with high accuracy using UWB technology and then transmitting the location information through LoRa method to gateways and the Internet of Things Network. The results of measurements in indoor and outdoor scenarios show a UWB localization accuracy that is of sub-meter level, being between 10 and 33 cm, and a UWB range of 124 m in Line-of-Sight (LOS) and 55 m in Non-Line-of-Sight (NLOS) applications, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. SHAPING IMPRESSIONS OF THE SPACE: EFFECTS OF STREET ART/GRAFFITI IN DIFFERENT PUBLIC SPACE CONTEXTS.
- Author
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ŠTAMBUK, Marina, NERLOVIĆ, Margarita BAHMATOVA, KOMŠO, Kristina, MIHOLIĆ, Antonela, and SPAJIĆ, Lara
- Subjects
GRAFFITI ,STREET art ,PUBLIC spaces ,AESTHETICS ,ARTISTIC photography ,MURAL art ,EXPERIMENTAL design - Abstract
Copyright of Društvena Istraživanja is the property of Institute of Social Sciences Ivo Pilar 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.)
- Published
- 2023
- Full Text
- View/download PDF
45. Structured Lipids Engineering for Health: Novel Formulations Enriched in n -3 Long-Chain Polyunsaturated Fatty Acids with Potential Nutritional Benefits.
- Author
-
Lopes, Paula A., Alfaia, Cristina M., Pestana, José M., and Prates, José A. M.
- Subjects
CHEMICAL processes ,DIETARY fats ,LIPIDS ,FATTY liver ,FATTY acids ,FAT ,UNSATURATED fatty acids - Abstract
Structured lipids (SLs) offer a promising avenue for designing novel formulations enriched in n-3 long-chain polyunsaturated fatty acids (LCPUFAs) with potential health benefits. Triacylglycerols (TAGs), the most common fats in the human diet, are both non-toxic and chemically stable. The metabolic efficiency and digestibility of TAGs are significantly influenced by the position of fatty acids (FAs) within the glycerol backbone, with FAs at the sn-2 position being readily absorbed. Over the past two decades, advancements in SL research have led to the development of modified TAGs, achieved either through chemical or enzymatic processes, resulting in SLs. The ideal structure of SLs involves medium-chain FAs at the sn-1,3 positions and long-chain n-3 LCPUFAs at the sn-2 position of the glycerol backbone, conferring specific physicochemical and nutritional attributes. These tailored SL formulations find wide-ranging applications in the food and nutraceutical industries, showing promise for dietary support in promoting health and mitigating various diseases. In particular, SLs can be harnessed as functional oils to augment TAG metabolism, thereby impeding the development of fatty liver, countering the onset of obesity, and preventing atherosclerosis and age-related chronic diseases. In scrutinising prevailing research trajectories, this review endeavours to provide an in-depth analysis of the multifaceted advantages and repercussions associated with the synthesis of SLs. It elucidates their burgeoning potential in enhancing health and well-being across a range of demographic cohorts. Specifically, the implications of SL utilisation are discussed in the context of healthcare environments and early childhood developmental support. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
46. Rule of four: an anatomic and value-based approach to stent-graft inventory for blunt thoracic aortic injury.
- Author
-
Olson, Kristofor A., Chung, C. Yvonne, Aksamit, Nikolas O., Hill, Charles E., Brown, Carlos V. R., and Teixeira, Pedro G.
- Subjects
ENDOVASCULAR aneurysm repair ,BLUNT trauma ,TRAUMA centers ,MORTALITY ,SURGICAL stents ,THORACIC aorta ,CHEST injuries ,DESCRIPTIVE statistics ,COMPUTED tomography ,TRANSPLANTATION of organs, tissues, etc. - Abstract
Purpose: As blunt thoracic aortic injury (BTAI) treatment has shifted from open to thoracic endovascular aortic repair (TEVAR), logistical challenges exist in creating and maintaining inventories of appropriately sized stent-grafts, including storage demands, shelf-life management and cost. We hypothesized that most injured aortas can be successfully repaired with a narrow range of stent-graft sizes and present a value-based anatomic approach to optimizing inventory. Methods: CT-scans of all patients with BTAI admitted to our Level I trauma center from Apr 2010-Dec 2018 were reviewed. Patients with anatomy incompatible with TEVAR were excluded. For each patient, after aortic sizing a set of two stent-grafts most likely to be utilized was selected from a list of twenty commercially available GORE conformable TAG endografts based on manufacturer instructions. Stent-graft sizes were then ranked based on the number of cases they would be suitable for. MATLAB was utilized to determine the combinations of stent-grafts which would cover the most patients. Results: Twenty-eight patients with BTAI were identified and three were excluded based on iliac diameter. Most patients were male (68%), mean age 42.3 ± 20.2 years, mean ISS 37.0 ± 9.8. Overall mortality was 25%. Of the 20 available stent-graft options, a combination of four stent-grafts would successfully treat 100% of the patients in this series. Conclusions: Based on actual CT-scan aortic measurements, we demonstrated that an inventory of four sent-graft sizes was sufficient to treat 100% of patients with BTAI. These data can be utilized as a value-based anatomic approach to aortic stent-graft institutional inventory creation and maintenance. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
47. A human liver chimeric mouse model for non-alcoholic fatty liver disease.
- Author
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Bissig-Choisat, Beatrice, Alves-Bezerra, Michele, Zorman, Barry, Ochsner, Scott A, Barzi, Mercedes, Legras, Xavier, Yang, Diane, Borowiak, Malgorzata, Dean, Adam M, York, Robert B, Galvan, N Thao N, Goss, John, Lagor, William R, Moore, David D, Cohen, David E, McKenna, Neil J, Sumazin, Pavel, and Bissig, Karl-Dimiter
- Subjects
ALP ,alkaline phosphatase ,ALT ,alanine aminotransferase ,AST ,aspartate aminotransferase ,CBPEGs ,cholesterol biosynthesis pathway enzyme genes ,CE ,cholesteryl ester ,CER ,ceramide ,CHHs ,chimeric human hepatocytes ,CMHs ,chimeric mouse hepatocytes ,CT ,confidence transcript ,DAG ,diacylglycerol ,DCER ,dihydroceramide ,DEG ,differentially expressed gene ,FA ,fatty acid ,FAH ,fumarylacetoacetate hydrolase ,FFA ,free fatty acid ,GGT ,gamma-glutamyl transpeptidase ,HCC ,hepatocellular carcinoma ,HCER ,hexosylceramide ,HCT ,high confidence transcriptional target ,Human disease modelling ,Humanised mice ,LCER ,lactosylceramide ,LPC ,lysophosphatidylcholine ,LPE ,lysophosphatidylethanolamine ,Lipid metabolism ,MAG ,monoacylglycerol ,MUFA ,monounsaturated fatty acid ,NAFLD ,non-alcoholic fatty liver disease ,NASH ,non-alcoholic steatohepatitis ,NC ,normal chow ,NTBC ,nitisinone ,Non-alcoholic fatty liver disease ,PC ,phosphatidylcholine ,PE ,phosphatidylethanolamine ,PI ,phosphatidylinositol ,PNPLA3 ,patatin-like-phospholipase domain-containing protein 3 ,PUFA ,polyunsaturated free FA ,SM ,sphingomyelin ,SREBP ,sterol regulatory element-binding protein ,Steatosis ,TAG ,triacylglycerol ,TIRF ,transgene-free Il2rg-/-/Rag2-/-/Fah-/- ,WD ,Western-type diet ,hALB ,human albumin ,ALP ,alkaline phosphatase ,ALT ,alanine aminotransferase ,AST ,aspartate aminotransferase ,CBPEGs ,cholesterol biosynthesis pathway enzyme genes ,CE ,cholesteryl ester ,CER ,ceramide ,CHHs ,chimeric human hepatocytes ,CMHs ,chimeric mouse hepatocytes ,CT ,confidence transcript ,DAG ,diacylglycerol ,DCER ,dihydroceramide ,DEG ,differentially expressed gene ,FA ,fatty acid ,FAH ,fumarylacetoacetate hydrolase ,FFA ,free fatty acid ,GGT ,gamma-glutamyl transpeptidase ,HCC ,hepatocellular carcinoma ,HCER ,hexosylceramide ,HCT ,high confidence transcriptional target ,LCER ,lactosylceramide ,LPC ,lysophosphatidylcholine ,LPE ,lysophosphatidylethanolamine ,MAG ,monoacylglycerol ,MUFA ,monounsaturated fatty acid ,NAFLD ,non-alcoholic fatty liver disease ,NASH ,non-alcoholic steatohepatitis ,NC ,normal chow ,NTBC ,nitisinone ,PC ,phosphatidylcholine ,PE ,phosphatidylethanolamine ,PI ,phosphatidylinositol ,PNPLA3 ,patatin-like-phospholipase domain-containing protein 3 ,PUFA ,polyunsaturated free FA ,SM ,sphingomyelin ,SREBP ,sterol regulatory element-binding protein ,TAG ,triacylglycerol ,TIRF ,transgene-free Il2rg-/-/Rag2-/-/Fah-/- ,WD ,Western-type diet ,hALB ,human albumin - Abstract
Background & aimsThe accumulation of neutral lipids within hepatocytes underlies non-alcoholic fatty liver disease (NAFLD), which affects a quarter of the world's population and is associated with hepatitis, cirrhosis, and hepatocellular carcinoma. Despite insights gained from both human and animal studies, our understanding of NAFLD pathogenesis remains limited. To better study the molecular changes driving the condition we aimed to generate a humanised NAFLD mouse model.MethodsWe generated TIRF (transgene-free Il2rg -/-/Rag2 -/-/Fah -/-) mice, populated their livers with human hepatocytes, and fed them a Western-type diet for 12 weeks.ResultsWithin the same chimeric liver, human hepatocytes developed pronounced steatosis whereas murine hepatocytes remained normal. Unbiased metabolomics and lipidomics revealed signatures of clinical NAFLD. Transcriptomic analyses showed that molecular responses diverged sharply between murine and human hepatocytes, demonstrating stark species differences in liver function. Regulatory network analysis indicated close agreement between our model and clinical NAFLD with respect to transcriptional control of cholesterol biosynthesis.ConclusionsThese NAFLD xenograft mice reveal an unexpected degree of evolutionary divergence in food metabolism and offer a physiologically relevant, experimentally tractable model for studying the pathogenic changes invoked by steatosis.Lay summaryFatty liver disease is an emerging health problem, and as there are no good experimental animal models, our understanding of the condition is poor. We here describe a novel humanised mouse system and compare it with clinical data. The results reveal that the human cells in the mouse liver develop fatty liver disease upon a Western-style fatty diet, whereas the mouse cells appear normal. The molecular signature (expression profiles) of the human cells are distinct from the mouse cells and metabolic analysis of the humanised livers mimic the ones observed in humans with fatty liver. This novel humanised mouse system can be used to study human fatty liver disease.
- Published
- 2021
48. Functional Aspect of Hashtagging in Virtual Communication: Kemerovo State University Online
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Anna L. Kalashnikova and Evgeniya Yu. Poselenova
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hashtag ,tag ,communication ,social media ,university ,function ,Philology. Linguistics ,P1-1091 ,Social Sciences - Abstract
Hashtags affect the conceptual sphere of Internet users and may promote certain ideologies because they are a synthetic tool of virtual communication. The research objective was to classify hashtags in virtual communication using the methods of conversational, contextual, discursive, content, and intent analyses. The study covered the online representations of the Kemerovo State University and its hashtags (2020–2023), namely, those of its official accounts, institutes, departments, trade unions, and student communities. The author revealed the following functions. The predictive function guided the first impression and was followed by compression, structuring, differentiating, and navigation functions, which systematized the content. The stereotyping function manifested itself in the image formation, while the axiological function asserted a set of ideologies behind it. The actualizing function was responsible for correlating the content with the media agenda. The manipulative and attractive functions demonstrated the suggestive aspect of the communicative potential of hashtags that represented the basic concepts of the university's conceptual sphere: kinship and family, community, a sense of belonging, stability, etc. In general, they developed an ideological model that formed a positive image of the university for the target audience.
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- 2023
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49. Investigating mechanisms of triacylglycerol synthesis induced by nitrogen depletion in the diatom Phaeodactylum tricornutum and characterising its diacylglycerol acyltransferases and phospholipid:diacylglycerol acyl transferase
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Bower, Iain David and Smith, Alison
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579.8 ,algae ,alga ,tag ,triacylglycerol ,dgat ,pdat ,phaeodactylum tricornutum ,nitrogen depletion ,nitrogen starvation ,diatom ,transcriptomic ,oil ,remodelling ,mgdg ,acyl transferase - Abstract
The ability of the diatom Phaeodactylum tricornutum (P. tricornutum) to accumulate triacylglycerol (TAG) and synthesise the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic (DHA) has led to interest in their development for biofuels and human nutrition. Nitrogen depletion is a well-studied experimental system for producing high levels of TAG in P. tricornutum. Identication of the mechanisms involved in TAG synthesis holds promise for increasing TAG yields. Numerous studies of nitrogen depletion have been carried out that combine physiological and transcriptomic or proteomic measurements. These studies provide insight into global and local metabolic responses but experimental setups varied. To identify a consistent response, experimental conditions and physiological changes were compiled and transcripts and proteins were functionally grouped in a systematic review. Comprehensive analysis of lipid metabolism and autophagy genes was undertaken. Analysis of regulated genes supports involvement of central pathways and lipid metabolism in TAG accumulation: acetyl-CoA synthesis may increase while FA synthesis, the Kennedy pathway, malonyl-CoA/ACP transacylase, plastidial desaturase and FA transport enzymes were upregulated. Desaturases, elongases, Lands cycle enzymes and long chain acyl-CoA synthases are targets for overexpression to increase EPA production during nitrogen depletion. Several lipidomic experiments have highlighted the potential for TAG synthesis from chloroplast lipids, particularly monogalactosyl diacylglycerol (MGDG), during disassembly of thylakoid membranes under N-depletion. Identifying MGDG derived TAG accumulation may yield enzymes that target EPA to TAG and thereby enable use of developed extraction processes. Some archaeplastida also synthesise TAG from MGDG in nitrogen depletion and freezing stress. A similar response in diatoms would demonstrate this metabolic feature in diverse photosynthetic lineages. In this thesis, the fatty acid synthase inhibitor cerulenin was used to probe TAG accumulation during N-depletion. Neutral lipid staining data support the possibility of an MGDG to TAG route but were not conclusive. Concurrently, candidate enzymes were identied based on conserved sequence domains and experimentally characterised genes from Chlamydomonas reinhardtii (C. reinhardtii ) and Arabidopsis thaliana (A. thaliana). P. tricornutum was subsequently transformed with acyl hydrolase:YFP constructs. Confocal microscopy supported locations of two acyl hydrolases: in the endoplasmic reticulum (ER) and chloroplast ER for Phatr3 J44028 and in the ER or cytoplasm for Phatr3 J41624. P. tricornutum encodes multiple isoforms of the TAG synthesis enzymes diacylglycerol acyltransferase (DGAT) and phospholipid:diacylglycerol acyltransferase (PDAT). Previous studies supported functionality of multiple PtDGATs and dierential regulation and predicted locations suggest non-redundancy. To investigate their role, overexpression of multiple DGATs and an N-terminal truncated PDAT was induced under nitrogen depletion. Total lipid extraction was carried out and species and FA composition of TAG was measured using tandem mass spectrometry. Total TAG was not altered. Overexpression of DGAT2B decreased the proportion of the 48:2 (carbon atoms:double bonds) TAG species and increased 50:2 and 50:3 while palmitic and oleic acid formed an increased and decreased proportion of TAG respectively. Overexpression of PDAT decreased the 48:1 and 48:2 TAG species, decreased the proportion of TAG composed of palmitic acid and increased the amount composed of EPA. Knowledge of typical TAG species composition in P. tricornutum supported respective preferences for incorporation of 18 carbon acyl-CoAs and EPA by DGAT2B and PDAT and their use of C16/C16 diacylglycerols.
- Published
- 2020
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50. Multi-channel tag based on fluid-suspended magnetic microparticles
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Cunningham, Lucy Katharine and Cowburn, Russell
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538 ,multi-channel ,tag ,magnetic ,microparticles ,fluid - Abstract
The applications of magnetism are far reaching, and much work has been done to make use of magnetic properties to develop viable applications. Two key areas are solid state memory, for example MRAM and hard discs, and the use of superparamagnetic nanoparticles in biological applications by using mechanical actuation. However, little has been done to bridge the gap between these two areas and bring to reality the possibility of carrying data in a liquid of magnetic particles. Ferrofluids to date are mostly simple iron oxide particles suspended in liquid, whereas this project uses micron lithography on thin film films of magnetic material which can be lifted off into solution to create an artificial ferrofluid of advanced materials. We hope to develop such a fluid with the same functionalisation which can be achieved through the thin film structures on a solid substrate. The particles can be redeposited onto a substrate to 'tag' it. By controlling the magnetic properties of batches of particles, we can detect the presence or absence of a given particle type hence providing a yes/no bit. In this thesis we first use the shape anisotropy of rectangular particles patterned from ultrathin films of Permalloy to control their magnetic properties. The extended shape introduces in-plane uniaxial anisotropy, with hysteresis along the easy axis. The dimensions of the rectangle determine the demagnetizing field so alter the coercivity. We can detect the presence of a particular particle shape by whether or not there is a switch measured at its specific coercivity. We characterize the particles and find that the coercivity and the ferromagnetic resonance peaks are specific to the particle dimensions. We also demonstrate that the particles can be lifted off into solution, redeposited under an applied field and detected in their dispersed form. However, the number of achievable channels is very low so we move on to an alternative system. We fabricate discs from magnetic multilayers consisting of ultrathin CoFeB films with interfacial perpendicular magnetic anisotropy which are antiferromagnetically interlayer exchange coupled via the Rudermann-Kittel-Kasuya-Yoshida interaction. They form synthetic antiferromagnets (SAFs) with uniaxial anisotropy along the surface normal. The coupling strength can be tuned by inserting ultrathin Pt layers between the CoFeB and the central Ru layer, which act to attenuate the exchange coupling. We characterize a range of multilayers each with specific coupling strengths and therefore different switching fields, which will be the basis of the channels of the tag. These are then patterned and lifted off into solution, then measured when redeposited to confirm the retention of their magnetic properties. We also investigate the time-dependence of the switching fields of individual CoFeB thin films and of the SAF bilayer films. In conclusion, we create a multi-channel tag from SAF discs with tuneable switching fields and demonstrate that the properties of the continuous film can be retained when patterned into discs which are lifted off into solution and redeposited onto a substrate.
- Published
- 2020
- Full Text
- View/download PDF
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