2,165 results on '"Xin, Xin"'
Search Results
2. Strategies for Assessing Health Information Credibility Among Older Social Media Users in China: A Qualitative Study.
- Author
-
Chang, Leanne, Li, Wenshu, Xin, Xin, and Wang, Jingyuan
- Subjects
SOCIAL media ,HEALTH information services ,HEALTH literacy ,RESEARCH funding ,QUALITATIVE research ,INTERVIEWING ,MEDICAL care ,MISINFORMATION ,DECISION making ,PROBLEM solving ,INFORMATION resources ,SOUND recordings ,THEMATIC analysis ,EXPERIENCE ,TRUST ,COMMUNICATION ,JUDGMENT (Psychology) ,DATA analysis software ,MEDICINE information services ,ACCESS to information ,INFORMATION-seeking behavior ,OLD age - Abstract
The fact that social media gives users easy access to online health information raises the question of what information evaluation strategies older adults use to distinguish trustworthy from unreliable health information. Identifying how older adults assess the credibility of health information that they acquire on social media is an important step toward understanding and reducing their susceptibility to health misinformation. In this study, we investigated the credibility assessment strategies used by older WeChat users in China. Following a qualitative approach, we conducted in-depth interviews with 40 WeChat users 65–85 years old (M = 71.75, SD = 6.65) in China who had acquired health information on WeChat. Results of theoretical thematic analysis revealed five source-based and content-based evaluative strategies: (1) determining the communicative orientation of the source, (2) assessing source reputation, (3) confirming content based on life experiences, (4) checking for exaggeration in claimed effects, and (5) assessing the consistency of content across sources. Older WeChat users' reliance on certain heuristic cues and their self-reliant approach to assessing information credibility provide contextual explanations for the link between heuristic processing and susceptibility to health misinformation. The findings have implications for anti-misinformation interventions targeting the older population in China and potentially beyond. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. A Ca-substituted air-stable layered oxide cathode material with facilitated phase transitions for high-performance Na-ion batteries.
- Author
-
Wei, Shu-Bing, He, Yong-Ju, Tang, Yan, Fu, Hong-Wei, Zhou, Jiang, Liang, Shu-Quan, and Cao, Xin-Xin
- Abstract
Copyright of Rare Metals 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.)
- Published
- 2024
- Full Text
- View/download PDF
4. Reduction of data amount in data-driven design of linear quadratic regulators.
- Author
-
Izumi, Shinsaku and Xin, Xin
- Published
- 2024
- Full Text
- View/download PDF
5. Performances of a novel BAF with ferromanganese oxide modified biochar (FMBC) as the carriers for treating antibiotics, nitrogen and phosphorus in aquaculture wastewater.
- Author
-
Yang, Wenyu, Xin, Xin, and Liu, Siqiang
- Abstract
In this paper, a biological aerated filter (BAF) based on ferromanganese oxide-biochar (FMBC) was constructed to investigated the removal performance and mechanism for conventional pollutants and four kinds of antibiotic, in contrast of conventional zeolite loaded BAF (BAF-A) and bamboo biochar filled BAF (BAF-B). Results showed that the average removal efficiency of total nitrogen (TN), total phosphorus (TP) and antibiotics in a FMBC-BAF (named by BAF-C) were 52.97 ± 2.27%, 51.58 ± 1.92% and 70.36 ± 1.00% ~ 81.65 ± 0.99% respectively in running period (39–100 d), which were significantly higher than those of BAF-A and BAF-B. In the BAF-C, the expression of denitrification enzyme activities and the secretion of extracellular polymeric substance (EPS) especially polyprotein (PN) were effectively stimulated, as well as accelerated electron transfer activity (ETSA) and lower electrochemical impedance spectroscopy (EIS) were acquired. After 100 days of operation, the abundance of nitrogen, phosphorus and antibiotic removal functional bacteria like Sphingorhabdus (4.52%), Bradyrhizobium (1.98%), Hyphomicrobium (2.49%), Ferruginibacter (7.80%), unclassified_f_Blastoca tellaceae (1.84%), norank_f_JG30-KF-CM45 (6.82%), norank_f_norank_o_SBR1031 (2.43%), Nitrospira (2.58%) norank_f_Caldilineaceae (1.53%) and Micropruina (1.11%) were enriched. Mechanism hypothesis of enhanced performances of nutrients and antibiotics removal pointed that: The phosphorus was removed by adsorption and precipitation, antibiotics removal was mainly achieved through the combined action of adsorption and biodegradation, while nitrogen removal was realized by biologic nitrification and denitrification in a FMBC-BAF for aquaculture wastewater treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Risk factors and prediction model for low-birth-weight infants born to women with gestational diabetes mellitus.
- Author
-
Yu-qing Pan, Xin-xin Huang, and Xiu-min Jiang
- Published
- 2024
- Full Text
- View/download PDF
7. Association between weekend catch-up outdoor duration and prevalence of myopia: evidence from a cross-sectional, multi-center study in China.
- Author
-
Ye, Lu, Wang, Ying, Sun, Ying, Li, Wu-jun, Zhang, Guo-yun, Wang, Wen-jun, Ren, Mei-xia, Gao, Jun-cheng, Liu, Guan-chen, Guo, Yi-ming, Huang, Juan, Lu, Xin-xin, Min, Jie, Ran, Tuan-zheng, Li, Si-xuan, He, Zi-tong, Jing, Qi-ya, Wang, Pei-quan, Qu, Liu-qing, and Yang, Yan-qi
- Abstract
Background: This study aimed at investigating the relationship between the weekend catch-up outdoor duration (WCOD) and prevalence of myopia among students in China. Methods: This cross-sectional study recruited participants in 107 schools (six cities, 30 districts) from China from May to June 2021. Demographic characteristics (age, grade, sex, ethnicity, BMI, resident, and parents' myopia), optically habits (bad writing habits, working/studying time per day, continuous working/studying time per day, and screen time per day) and outdoor duration (weekday and weekend) were obtained from questionnaire. WCOD was defined as outdoor time 1 h longer on weekends than on weekdays. Spherical equivalent (SE) of refractive error were measured with non-cycloplegic refraction. Adjusted multivariate logistic regression analysis was performed to evaluate the relationship between WCOD and prevalence of myopia. Results: Students with myopia had shorter WCOD compared with those without myopia (P < 0.001). Adjusted multivariate logistic regression analyses showed negative associations between WCOD and prevalence of myopia in Chinese students, especially in students with WCOD of 2–3 h (OR = 0.577, P < 0.001) and 3–4 h (OR = 0.571, P = 0.004) when the weekday outdoor duration was 0.5–1 h, as well as students with WCOD of 2–3 h (OR = 0.614, P = 0.003) when the weekday outdoor duration was 1–2 h. Similar results were observed in students with high myopia. Students with high myopia had shorter WCOD compared with those without high myopia (P = 0.001). Negative associations between WCOD and prevalence of high myopia were significant in students with WCOD of 1–2 h when the weekday outdoor duration was < 0.5 h (OR = 0.585, P = 0.007) and 0.5–1 h (OR = 0.537, P = 0.018). Conclusion: Our study, for the first time, reported that a WCOD have a potential to reduce the prevalence of myopia and high myopia in Chinese students. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Fast-charging 2D phosphate cathodes via green exfoliation: low steric hindrance and efficient Na+ transport.
- Author
-
Wang, Xiao-Tong, Li, Kai, Cao, Jun-Ming, Gu, Zhen-Yi, Zhao, Xin-Xin, Liu, Han-Hao, Guo, Jin-Zhi, Sun, Zhong-Hui, Zheng, Shuo-Hang, Liang, Hao-Jie, and Wu, Xing-Long
- Subjects
IONIC bonds ,IONIC conductivity ,ENERGY density ,DIFFUSION kinetics ,BAND gaps - Abstract
The realization of high energy density and fast-charging capability is severely limited by the low intrinsic electronic conductivity and slow ion diffusion rates for the Na
3 V2 (PO4 )2 O2 F (NVPOF) cathode in sodium-ion batteries (SIBs). Inspired by the rapid transport of carriers in two-dimensional (2D) frames, we designed a carbonless fast-charging 2D-NVPOF cathode material using H2 O molecules as the initial green exfoliant for the first time, which achieves the breakage of strong interlayer ionic bonds under mild and safe conditions. After exfoliation operation via mechanical expansion with the assistance of a thermal field, the H2 O molecules can enter into interlayers of 2D-NVPOF and further coordinate with the defective V atoms, thus enhancing the electronic conductivity, structural robustness and Na+ diffusion kinetics, which can be verified from the enhanced (002) lattice plane exposure, reduced band gap and lower Na+ migration energy barrier of 2D-NVPOF. In concert, these merits contribute to achieving the excellent fast-charging properties (80% of total battery capacity in 120 s of charging), higher energy density (up to 465 W h kg−1 ), and long-term cycling stability of 2D-NVPOF, highlighting the great potential for practical application in SIBs. This strategy implies that the enhancement of electronic/ionic conductivity in the NASICON structure is achievable without introducing carbon and altering the active center, thus sparking new ideas for improving the fast-charging characteristics of cathodes for SIBs. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
9. Genome-based classification of genera Halosegnis and Salella, and description of four novel halophilic archaea isolated from a tidal flat.
- Author
-
Hu, Yao, Ma, Xue, Tan, Shun, Li, Xin-Xin, Cheng, Mu, Hou, Jing, and Cui, Heng-Lin
- Abstract
The current species of Halosegnis and Salella within the class Halobacteria are closely related based on phylogenetic, phylogenomic, and comparative genomic analyses. The Halosegnis species showed 99.8–100.0% 16S rRNA and 96.6–99.6% rpoB′ gene similarities to the Salella species, respectively. Phylogenetic and phylogenomic analyses showed that Salella cibi CBA1133
T , the sole species of Salella, formed a single tight cluster with Halosegnis longus F12-1T , then with Halosegnis rubeus F17-44T . The average nucleotide identity (ANI), digital DNA–DNA hybridization (dDDH), and average amino acid identity (AAI) values between Salella cibi CBA1133T and Halosegnis longus F12-1T were 99.2, 94.2, and 98.6%, respectively, much higher than the thresholds for species demarcation. This genome-based classification revealed that the genus Salella should be merged with Halosegnis, and Salella cibi should be a later heterotypic synonym of Halosegnis longus. Halophilic archaeal strains DT72T , DT80T , DT85T , and DT116T , isolated from the saline soil of a tidal flat in China, were subjected to polyphasic taxonomic characterization. The phenotypic, chemotaxonomic, phylogenetic, and phylogenomic features indicated that strains DT72T (= CGMCC 1.18925T = JCM 35418T ), DT80T (= CGMCC 1.18926T = JCM 35419T ), DT85T (= CGMCC 1.19049T = JCM 35605T ), and DT116T (= CGMCC 1.19045T = JCM 35606T ) represent four novel species of the genera Halorussus, Halosegnis and Haloglomus, respectively, for which the names, Halorussus caseinilyticus sp. nov., Halorussus lipolyticus sp. nov., Halosegnis marinus sp. nov., and Haloglomus litoreum sp. nov., are proposed. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
10. Intense Circularly Polarized Luminescence Induced by Chiral Supramolecular Assembly: The Importance of Intermolecular Electronic Coupling.
- Author
-
Liu, Zheng‐Fei, Liu, Xin‐Xin, Zhang, Han, Zeng, Lan, Niu, Li‐Ya, Chen, Peng‐Zhong, Fang, Wei‐Hai, Peng, Xiaojun, Cui, Ganglong, and Yang, Qing‐Zheng
- Subjects
OPTICAL rotation ,ELECTRON transitions ,X-ray diffraction ,ELECTRONIC structure ,LUMINESCENCE - Abstract
Herein we report on circularly polarized luminescence (CPL) emission originating from supramolecular chirality of organic microcrystals with a |glum| value up to 0.11. The microcrystals were prepared from highly emissive difluoroboron β‐diketonate (BF2dbk) dyes R‐1 or S‐1 with chiral binaphthol (BINOL) skeletons. R‐1 and S‐1 exhibit undetectable CPL signals in solution but manifest intense CPL emission in their chiral microcrystals. The chiral superstructures induced by BINOL skeletons were confirmed by single‐crystal XRD analysis. Spectral analysis and theoretical calculations indicate that intermolecular electronic coupling, mediated by the asymmetric stacking in the chiral superstructures, effectively alters excited‐state electronic structures and facilitates electron transitions perpendicular to BF2bdk planes. The coupling increases cosθμ,m from 0.05 (monomer) to 0.86 (tetramer) and triggers intense optical activity of BF2bdk. The results demonstrate that optical activity of chromophores within assemblies can be regulated by both orientation and extent of intermolecular electronic couplings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
11. Intense Circularly Polarized Luminescence Induced by Chiral Supramolecular Assembly: The Importance of Intermolecular Electronic Coupling.
- Author
-
Liu, Zheng‐Fei, Liu, Xin‐Xin, Zhang, Han, Zeng, Lan, Niu, Li‐Ya, Chen, Peng‐Zhong, Fang, Wei‐Hai, Peng, Xiaojun, Cui, Ganglong, and Yang, Qing‐Zheng
- Subjects
OPTICAL rotation ,ELECTRON transitions ,X-ray diffraction ,ELECTRONIC structure ,LUMINESCENCE - Abstract
Herein we report on circularly polarized luminescence (CPL) emission originating from supramolecular chirality of organic microcrystals with a |glum| value up to 0.11. The microcrystals were prepared from highly emissive difluoroboron β‐diketonate (BF2dbk) dyes R‐1 or S‐1 with chiral binaphthol (BINOL) skeletons. R‐1 and S‐1 exhibit undetectable CPL signals in solution but manifest intense CPL emission in their chiral microcrystals. The chiral superstructures induced by BINOL skeletons were confirmed by single‐crystal XRD analysis. Spectral analysis and theoretical calculations indicate that intermolecular electronic coupling, mediated by the asymmetric stacking in the chiral superstructures, effectively alters excited‐state electronic structures and facilitates electron transitions perpendicular to BF2bdk planes. The coupling increases cosθμ,m from 0.05 (monomer) to 0.86 (tetramer) and triggers intense optical activity of BF2bdk. The results demonstrate that optical activity of chromophores within assemblies can be regulated by both orientation and extent of intermolecular electronic couplings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Theoretical study on the mechanisms, kinetics and risk assessment of OH radicals and Cl atom initiated transformation of HCFC-235fa in the atmosphere.
- Author
-
Tai-Xing Chi, Xin-Xin Li, Shuang Ni, Feng-Yang Bai, Xiu-Mei Pan, and Zhen Zhao
- Abstract
Hydrochlorofluorocarbons (HCFCs) are important greenhouse gases and ozone-depleting substances. Thus, a thorough understanding of their atmospheric fate is essential for preventing and controlling atmospheric pollution. Herein, the atmospheric transformation mechanism of CF
3 CH2 CClF2 (HCFC-235fa) by the OH radical and the Cl atom was carried out at the dual-level of CCSD(T)/aug-cc-pVTZ//M06-2X/6-311+G(d,p). The reaction rate coefficients were calculated using the multistructural canonical variational transition state theory with small curvature tunneling (MS-CVT/SCT) at 200–1000 K. The kMS-CVT/SCT (CF3 CH2 CClF2 + OH) and kMS-CVT/SCT (CF3 CH2 CClF2 + Cl) values are 9.05 × 10−15 and 1.95 × 10−17 cm³ molecule−1 s−1 at 297 K, respectively. The results show that the role of OH is more important than Cl in the degradation of CF3 CH2 CClF2 . The atmospheric lifetimes (83 days–77.93 years), ozone destruction potential (0.001–0.023), and global warming potentials (GWP100 = 21.06–5157.35) of CF3 CH2 CClF2 were assessed, and these results indicate that CF3 CH2 CClF2 is atmospherically persistent and environmentally unfriendly. The evolution mechanisms of CF3 C·HCClF2 , CF3 C(OO˙)HCClF2 , and CF3 C(O˙)HCClF2 in the presence of O2 , HO2 ˙, and NO were investigated and discussed. The resulting products of CF3 CH2 CClF2 are mostly highly oxidized multi-functional compounds in the forms of aldehydes, ketones, and organic nitrates. A computational assessment of acute and chronic toxicities was performed at three levels of nutrition in order to improve the understanding of the potential toxicity of CF3 CH2 CClF2 and its degradation products to the aquatic environment. The acidification potential of CF3 CH2 CClF2 was calculated to be 1.141 and presumed to contribute to the formation of acid rain. The results may contribute to describing HCFCs' atmospheric fate, persistence, and environmental risks. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
13. EBNA1BP2 identified as potential prognostic biomarker for multiple tumor types in pan-cancer analysis.
- Author
-
Sun, Li-Yue, Jiang, Yu-Ying, Zeng, Xin-Xin, Shen, Ju, Xian, Ke-Xin, Xu, Quan-An, Xu, Xian, Liang, Lei, and Zhang, Xu-Hui
- Subjects
GENE expression ,LATENT infection ,B cells ,BIOMARKERS ,PROGNOSIS - Abstract
Background: Epstein-Barr virus (EBV) infection has been closely linked to the development of various types of cancer. EB nuclear antigen 1 binding protein 2 (EBNA1BP2) is a crucial molecule for stable isolation of EBV in latent infection. However, the role of EBNA1BP2 in multiple tumor types is remains unclear. In this study, we comprehensively analyzed the functional characteristics of EBNA1BP2 and investigate its potential as a prognostic biomarker in pan-cancer. Methods: We utilized data from TCGA (The Cancer Genome Atlas) and GEO (Gene Expression Omnibus) databases and employed various bioinformatics analysis tools, including TIMER2.0, HPA, GEPIA2.0, PrognoScan, cBioPortal, CancerSEA, and BioGRID to explore the expression pattern, prognostic value, immune infiltration, and methylation level of EBNA1BP2 in pan-cancer. Additionally, we conducted enrichment analysis of genes associated with EBNA1BP2 to identify potential biological functions and pathways. Results: Our analysis revealed that EBNA1BP2 expression was significantly higher in tumor tissues compared to tumor-adjacent tissues. We observed that lower expression of EBNA1BP2 in adrenocortical carcinoma (ACC), brain lower grade glioma (LGG), sarcoma (SARC), and uterine carcinosarcoma (UCS) was significantly associated with improved overall survival (OS) and disease-free survival (DFS). Furthermore, the promoter methylation level of EBNA1BP2 was downregulated in the majority of cancer types. At the single-cell level, EBNA1BP2 was found to be positively correlated with cell cycle and DNA repair processes, while negatively correlated with hypoxia. Additionally, EBNA1BP2 was associated with the infiltration of immune cells such as B cells, cancer-associated fibroblast cells, and CD8+ T cells. Gene enrichment analysis indicated that EBNA1BP2 was mainly involved in nucleoplasm and RNA binding pathways. Conclusion: Our findings suggest that EBNA1BP2 may serve as a potential prognostic biomarker for survival in pan-cancer. Further experimental studies are needed to validate these findings and explore the underlying mechanisms by which EBNA1BP2 contributes to tumorigenesis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Exploration of ETV6::ABL1-positive AML with concurrent NPM1 and FLT3-ITD mutations.
- Author
-
Li, Hui-dan, Chen, Si-si, Ding, Jing, Zhang, Chun-ling, Qiu, Hui-yin, Xia, Xin-xin, Yang, Jun, and Wang, Xiao-rui
- Abstract
ETV6::ABL1 is a rare fusion gene that found in MPN, ALL, and AML. It has a complex and diverse formation mechanism due to the reciprocal orientations of the ETV6 and ABL1 genes relative to the centromeres. NPM1 is frequently mutated in adult AML, often accompanied by FLT3-ITD, which suggests molecular synergisms in AML pathogenesis. Previous reports on ETV6::ABL1 mostly focus on FLT3-ITD. In this study, we present a case of AML with ETV6::ABL1, along with NPM1 and FLT3-ITD. The patient showed a rapid increase in primitive cells at the initial stage, along with the presence of immature granulocytes and erythrocytes. Through cytogenetic analysis, fluorescence in situ hybridization (FISH), and RNA-seq, we elucidated the mechanism behind the formation of the ETV6::ABL1 fusion gene. Despite conventional chemotherapy failure and rapid tumor proliferation, we attempted to add FLT3 inhibitor sorafenib to the treatment, along with chemotherapy bridging to haploidentical transplantation. After haplo-HSCT, a combination of sorafenib and dasatinib was administered as maintenance therapy. The patient achieved complete remission (CR) and maintained it for 11 months. The intricate genetic landscape observed in this case presents diagnostic dilemmas and therapeutic challenges, emphasizing the importance of a comprehensive understanding of its implications for disease classification, risk stratification, and treatment selection. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Liver involvement with Langerhans cell histiocytosis in adults.
- Author
-
Chang, Long, Cai, Hua-Cong, Lang, Min, Lin, He, Luo, Ya-Ping, Duan, Ming-hui, Zhou, Dao-bin, Goyal, Gaurav, and Cao, Xin-xin
- Subjects
RESEARCH funding ,ASPARTATE aminotransferase ,TREATMENT effectiveness ,RETROSPECTIVE studies ,DESCRIPTIVE statistics ,ALKALINE phosphatase ,BILIRUBIN ,MULTIVARIATE analysis ,GAMMA-glutamyltransferase ,ODDS ratio ,MEDICAL records ,ACQUISITION of data ,ALANINE aminotransferase ,LIVER ,LANGERHANS-cell histiocytosis ,PROGRESSION-free survival ,CONFIDENCE intervals ,LIVER function tests ,MOLECULAR pathology ,SERUM albumin ,OVERALL survival ,SYMPTOMS ,ADULTS - Abstract
Background and Aims Liver involvement portends poor prognosis in adults. We aimed to characterize the clinical features, liver function tests, radiologic findings, molecular profiles, therapeutic approaches and outcomes of adults patients with Langerhans cell histiocytosis (LCH) with liver involvement. Methods We conducted a retrospective analysis of all adults with LCH (≥ 18 years) seen at Peking Union Medical College Hospital (Beijing, China) between January 2001 and December 2022. Results Among the 445 newly diagnosed adults with LCH, 90 patients had liver involvement at diagnosis and 22 patients at relapse. The median age was 32 years (range, 18–66 years). Of 112 evaluable patients, 108 had full liver function testing, including alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase (ALP), γ-glutamyl transpeptidase (GGT), and total bilirubin and albumin. Elevated ALP was seen in 63.0% and GGT in 86.1%; 14.8% had elevated bilirubin. Next-generation sequencing of 54 patients revealed frequent BRAF
N486_P490 (29.6%), BRAFV600E (18.5%), and MAP2K1 (14.8%). Outcomes After a median 40 months' follow-up (range 1-168 months), 3-year progression-free survival (PFS) and overall survival were 49.7% and 86.6% respectively. In multivariable analyses, ≥3 abnormal liver function tests (HR 3.384, 95% CI 1.550–7.388, P = .002) associated with inferior PFS; immunomodulatory drug therapy (HR 0.073, 95% CI, 0.010-0.541, P = .010) correlated with superior PFS versus chemotherapy. Conclusions In summary, elevated GGT and ALP were common in adults with LCH liver involvement. Greater than equal to 3 abnormal liver function tests predicted poor outcomes. Immunomodulatory drug therapy was associated with favorable progression-free survival compared to chemotherapy. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
16. Evolutionary computation for unmanned aerial vehicle path planning: a survey.
- Author
-
Jiang, Yi, Xu, Xin-Xin, Zheng, Min-Yi, and Zhan, Zhi-Hui
- Abstract
Unmanned aerial vehicle (UAV) path planning aims to find the optimal flight path from the start point to the destination point for each aerial vehicle. With the rapid development of UAV technology, UAVs are required to tackle missions in increasingly complex environments. Consequently, UAV path planning encounters more challenges, causing traditional deterministic algorithms to struggle to find the optimal path within a certain time. Evolutionary computation (EC) is a series of nature-inspired methodologies and algorithms, which have shown effectiveness and efficiency in solving many complex optimization problems in real-world applications. Recently, EC algorithms have been effectively applied in UAV path planning and have shown encouraging performance in obtaining high-quality solutions. Therefore, it is crucial to review the related research experience and literature in the field of using EC for UAV path planning. This paper presents a comprehensive survey to showcase the existing studies on EC in UAV path planning, especially in complex environments. The paper first proposes a novel taxonomy to categorize the relevant studies into three different categories according to the complex environmental properties of the application scenarios. These environmental properties include complex search space, complex time control, and complex optimization objectives. Then, the EC algorithms for UAV path planning in these complex environments are further systematically surveyed as constrained search space and large-scale search space in complex search space, dynamic UAV path planning and multi-UAV concurrent path planning in complex time control, and expensive objective and multiple objectives in complex optimization objectives. Finally, some potential future research directions for applying EC algorithms to UAV path planning are presented and discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. How graph convolutions amplify popularity bias for recommendation?
- Author
-
Chen, Jiajia, Wu, Jiancan, Chen, Jiawei, Xin, Xin, Li, Yong, and He, Xiangnan
- Abstract
Graph convolutional networks (GCNs) have become prevalent in recommender system (RS) due to their superiority in modeling collaborative patterns. Although improving the overall accuracy, GCNs unfortunately amplify popularity bias — tail items are less likely to be recommended. This effect prevents the GCN-based RS from making precise and fair recommendations, decreasing the effectiveness of recommender systems in the long run. In this paper, we investigate how graph convolutions amplify the popularity bias in RS. Through theoretical analyses, we identify two fundamental factors: (1) with graph convolution (i.e., neighborhood aggregation), popular items exert larger influence than tail items on neighbor users, making the users move towards popular items in the representation space; (2) after multiple times of graph convolution, popular items would affect more high-order neighbors and become more influential. The two points make popular items get closer to almost users and thus being recommended more frequently. To rectify this, we propose to estimate the amplified effect of popular nodes on each node’s representation, and intervene the effect after each graph convolution. Specifically, we adopt clustering to discover highly-influential nodes and estimate the amplification effect of each node, then remove the effect from the node embeddings at each graph convolution layer. Our method is simple and generic — it can be used in the inference stage to correct existing models rather than training a new model from scratch, and can be applied to various GCN models. We demonstrate our method on two representative GCN backbones LightGCN and UltraGCN, verifying its ability in improving the recommendations of tail items without sacrificing the performance of popular items. Codes are open-sourced
1) . [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
18. A theoretical study of the electron paramagnetic resonance spectra and local environment in copper(II) complexes with different imidazole and chlorido ligands.
- Author
-
Hu, Jun‐Shan, Wang, Xin‐Xin, Li, Si‐Qi, Li, Jia‐Man, and Ding, Chang‐Chun
- Subjects
ELECTRON paramagnetic resonance ,LIGANDS (Biochemistry) ,COPPER ,EXPERIMENTAL design ,CHLORIDES - Abstract
Copper(II) chloride anionic coordination complexes with different imidazole‐derived ligands due to the potential cytotoxic activity play the important role in protein. By investigating the experimental electron paramagnetic resonance (EPR) and ultraviolet–visible (UV–vis) spectra of [CuCl(C6H10N2)4]Cl, [CuCl(C6H10N2)4]Cl, [CuCl2(C4H6N2)4], and [Cu2Cl2(C5H8N2)6]Cl2·2H2O, the local structure of the corresponding Cu2+ centers and the role of different ligands are obtained. Based on the well‐agreed EPR parameters and the d‐d transitions (10Dq), the four Cu2+ centers show tetragonal and orthorhombic distortion, corresponding to the different anisotropies of EPR signals. In addition, the general rules of governing the impact of methanol in imidazolylalkyl derivatives are also discussed, especially the influence on the local environment (symmetry, distortion, covalency, and crystal field) of above four copper(II) chloride anionic coordination complexes. Therefore, the obtained results in this study will be beneficial to provide a theoretical basis for the experimental design of desired copper‐containing imidazolyl alkyl derivatives. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Two new cases with the UBQLN2 gene mutation in Han Chinese.
- Author
-
He, Shuang, He, Xin-Xin, Yang, Hong-Qi, Zhang, Jie-Wen, and Chen, Shuai
- Subjects
FRONTOTEMPORAL dementia ,GENETIC variation ,AMYOTROPHIC lateral sclerosis ,CHINESE people ,MOTOR neurons - Abstract
Variations in the UBQLN2 gene are associated with a group of diseases with X-linked dominant inheritance and clinical phenotypes of amyotrophic lateral sclerosis (ALS) and/or frontal temporal lobe dementia (FTD). Cases with UBQLN2 variations have been rarely reported worldwide. The reported cases exhibit strong clinical heterogeneity. Here, we report two adult-onset cases with UBQLN2 variations in Han Chinese. Whole exome sequencing revealed the hemizygous P506S (c.1516C > T) and the heterozygous P509S variation (c.1525C > T), both of which were located within the hotspot mutation region. The patient with the P506S variation was a 24-year-old male. The clinical feature was spastic paraplegia without lower motor neuron damage. The patient's mother was an asymptomatic heterozygote carrier with skewed X-chromosome inactivation. The patient with the P509S variation was a 63-year-old female. Clinical features included ALS and parkinsonism.
18 F-fluorodopa PET-CT revealed presynaptic dopaminergic deficits in bilateral posterior putamen. These cases further highlight the clinical heterogeneity of UBQLN2 cases. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
20. The effects of diverse microplastics on adzuki bean (Vigna angularis) growth and physiologic properties.
- Author
-
Liang, Rong, Sun, Feihu, Yang, Xiaomei, Liu, Hongquan, and Wang, Xin-Xin
- Subjects
PRINCIPAL components analysis ,SOIL pollution ,MICROPLASTICS ,MEMBERSHIP functions (Fuzzy logic) ,OXIDATIVE stress - Abstract
Globally, microplastic pollution of soil ecosystems poses a major risk. The early studies found that the impact of microplastics on different plants could vary depending on the type of microplastic, the mass concentration or the plant species. This study investigated the effect of 3 mass concentrations (0.1%, 1%, and 2.5%) and 3 types of microplastics (PE MPs, PLA MPs, and PVC MPs) on adzuki bean biomass, root traits, Chlorophyll content and antioxidant enzymes. According to our findings, all microplastics had an impact on biomass, but PLA MPs had the strongest inhibitory effect. The high mass concentration of microplastics had a significant influence on chlorophyll content. Adzuki beans exhibited varying degrees of damage upon exposure to microplastics, but they were able to withstand the oxidative stress brought on by PE MPs by increasing the activity of antioxidant enzymes (SOD and POD). Comparing the adverse effects of PE MPs on adzuki beans to those of PLA MPs and PVC MPs, principal component analysis and membership function value analysis revealed that the former had fewer impacts. Disparities in the observed effects may be attributed to variations in the properties of microplastics. Subsequent investigations into the mechanisms underlying microplastic toxicity need a more comprehensive exploration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
21. Weighted gene co-expression network analysis identifies important modules and hub genes involved in the regulation of breast muscle yield in broilers.
- Author
-
Xing Guo, Hao Wang, Meng Liu, Jin-Mei Xu, Ya-Nan Liu, Hong Zhang, Xin-Xin He, Jiang-Xian Wang, Wei Wei, Da-Long Ren, and Run-Shen Jiang
- Subjects
CHICKEN breeds ,GENE regulatory networks ,PECTORALIS muscle ,MUSCLE growth ,MUSCLE mass ,BREAST - Abstract
Objective: Increasing breast meat production is one of the primary goals of the broiler industry. Over the past few decades, tremendous progress has been made in genetic selection and the identification of candidate genes for improving the breast muscle mass. However, the molecular network contributing to muscle production traits in chickens still needs to be further illuminated. Methods: A total of 150 1-day-old male 817 broilers were reared in a floor litter system. At the market age of 50 d, eighteen healthy 817 broilers were slaughtered and the left pectoralis major muscle sample from each bird was collected for RNA-seq sequencing. The birds were then plucked and eviscerated and the whole breast muscle was removed and weighed. Breast muscle yield was calculated as the ratio of the breast muscle weight to the eviscerated weight. To identify the co-expression networks and hub genes contributing to breast muscle yield in chickens, we performed weighted gene co-expression network analysis (WGCNA) based on the 18 transcriptome datasets of pectoralis major muscle from eighteen 817 broilers. Results: The WGCNA analysis classified all co-expressed genes in the pectoral muscle of 817 broilers into 44 modules. Among these modules, the turquoise and skyblue3 modules were found to be most significantly positively (r = 0.78, p = 1e-04) and negatively (r = –0.57, p = 0.01) associated with breast meat yield, respectively. Further analysis identified several hub genes (e.g., DLX3, SH3RF2, TPM1, CAV3, MYF6, and CFL2) that involved in muscle structure and muscle development were identified as potential regulators of breast meat production. Conclusion: The present study has advanced our understanding of the molecular regulatory networks contributing to muscle growth and breast muscle production and will contribute to the molecular breeding of chickens in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
22. Host miRNA and mRNA profiles during in DEF and duck after DHAV-1 infection.
- Author
-
Wang, Meng, Liu, Zezheng, Cheng, Anchun, Wang, Mingshu, Wu, Ying, Yang, Qiao, Tian, Bin, Ou, Xuming, Sun, Di, Zhang, Shaqiu, Zhu, Dekang, Jia, Renyong, Chen, Shun, Liu, Mafeng, Zhao, Xin Xin, and Huang, Juan
- Subjects
GENE expression ,GENE ontology ,DUCKLINGS ,ENCYCLOPEDIAS & dictionaries ,MICRORNA - Abstract
DHAV-1 is a highly infectious pathogen that can cause acute hepatitis in ducklings. MicroRNA (miRNA) plays an essential regulatory role in virus response. We characterized and compared miRNA and mRNA expression profiles in duck embryonic fibroblasts (DEF) and the liver of ducklings infected with DHAV-1. DHAV-1 infected DEF was divided into infection group (D group) and blank group (M group), and DHAV-1 infected duckling group was divided into infection group (H group) and blank group (N group). D vs. M have 130 differentially expressed (DE) miRNA (DEM) and 2204 differentially expressed (DE) mRNA (DEG), H vs. N have 72 DEM and 1976 DEG. By the intersection of D vs. M and H vs. N comparisons, 15 upregulated DEM, 5 downregulated DEM, 340 upregulated DEG and 50 downregulated DEG were found with both in vivo and in vitro DHAV-1 infection. In particular, we identified the same DE miRNA target genes and functional annotations of DE mRNA. We enriched with multiple gene ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, which may have important roles in viral virulence, host immunity, and metabolism. We selected miR-155, which is co-upregulated, and found that miR-155 targets SOCS1 to inhibit DHVA-1 replication. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Biphasic effects of single-dose intravenous injection of uridine adenosine tetraphosphate on blood pressure in mice.
- Author
-
Ma, Yue, An, Chen-Yang, Wang, Xin-Xin, Gan, Lu, Li, Lu, and Li, Kui-Hua
- Subjects
BLOOD pressure ,ADENOSINE triphosphate ,DRUG administration ,INTRAVENOUS injections ,URIDINE - Abstract
Purpose: To explore the effects of a single dose of uridine adenosine tetraphosphate (Up
4 A) administered through the tail vein, on the blood pressure of mice. Methods: The mice were separated into three groups: the Up4 A group, the norepinephrine (NA) group, and the α, β-methylene adenosine triphosphate (α, β-meATP) group. Each group of mice were injected drugs through the tail vein at 1, 3, 10, and 30 nmol/kg doses in an ascending order. Additionally, six mice were injected Up4 A through the tail vein at 20, 40, 60, and 80 nmol/kg doses in an ascending order. The administration intervals for each dose were 20 min. Results: Mice in these groups experienced a rapid increase in blood pressure, reaching its peak within 10 s after drug administration. It took approximately 120 s for the blood pressure to return to baseline levels after the administration of the drugs in both the NA and α, β-meATP groups. After higher doses of Up4 A were administered to the mice, their blood pressure exhibited biphasic changes. Initially, blood pressure of the mice rapidly dropped to a minimum within 10 s, then rose rapidly to a peak within 30 s. Subsequently, it gradually declined, taking around 10 min to return to the levels before the drug administration. Conclusion: Compared to NA and α, β-meATP, Up4 A, which contains purine and pyrimidine components, displayed a weaker blood pressure-elevating potency. Through its corresponding structure, Up4 A exerted vasodilatory and vasoconstrictive effects throughout the entire experiment resulting in biphasic changes in blood pressure. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
24. Mechanism and structure–activity relationship of H2 and CO2 activation at the ZnO/Cu catalyst interface.
- Author
-
Xin, Xin, Gao, Peng, and Li, Shenggang
- Published
- 2024
- Full Text
- View/download PDF
25. A qualitative exploration of disseminating research findings among public health researchers in China.
- Author
-
Hu, Yiluan, Yin, Xuejun, Wang, Yachen, Gong, Enying, Xin, Xin, Liu, Jing, Liu, Xia, Shao, Ruitai, Zhang, Juan, and Brownson, Ross C.
- Subjects
CONSCIOUSNESS raising ,SNOWBALL sampling ,TELECOMMUNICATION systems ,RESEARCH personnel ,JUDGMENT sampling - Abstract
Background: Research dissemination is essential to accelerate the translating of evidence into practice. Little is known about dissemination among Chinese public health researchers. This study aimed to explore the understanding and practices of disseminating research findings and to identify barriers and facilitators that influence dissemination activities to non-research audiences. Methods: This study deployed an exploratory qualitative design with purposive and snowball sampling. One focus group with 5 participants and 12 in-depth interviews were conducted with participants working in diverse fields from universities (n = 10), the National Chinese Center for Disease Control and Prevention (n = 4), the Chinese National Cancer Center (n = 1), the Chinese National Center for Cardiovascular Disease (n = 1), and China office of a global research institute (n = 1) from May to December 2021 to reach saturation. Data were initially analyzed using inductive thematic analysis. The designing for dissemination (D4D) logic model was then used to organize themes and subthemes. Two coders independently coded all transcripts and discussed disparities to reach a consensus. Results: Out of 17 participants, 12 misunderstood the concept of dissemination; 14 had disseminated to non-research audiences: 10 to the public, 10 to practitioners, and 9 to policymakers. We identified multiple barriers to dissemination to non-research audiences across four phases of the D4D logic model, including low priority of dissemination, limited application of D4D strategies, insufficient support from the research organizations, practice settings, and health systems, and overemphasis on academic publications. Conclusions: There was a lack of understanding and experience of dissemination, indicating a lack of emphasis on active dissemination in China. We provide implications for raising awareness, building capacity, facilitating multidisciplinary collaboration, providing incentives and infrastructure, changing climate and culture, establishing communication and executive networks, and accelerating systematic shifts in impact focus. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. A qualitative exploration of disseminating research findings among public health researchers in China.
- Author
-
Hu, Yiluan, Yin, Xuejun, Wang, Yachen, Gong, Enying, Xin, Xin, Liu, Jing, Liu, Xia, Shao, Ruitai, Zhang, Juan, and Brownson, Ross C.
- Subjects
CONSCIOUSNESS raising ,SNOWBALL sampling ,TELECOMMUNICATION systems ,RESEARCH personnel ,JUDGMENT sampling - Abstract
Background: Research dissemination is essential to accelerate the translating of evidence into practice. Little is known about dissemination among Chinese public health researchers. This study aimed to explore the understanding and practices of disseminating research findings and to identify barriers and facilitators that influence dissemination activities to non-research audiences. Methods: This study deployed an exploratory qualitative design with purposive and snowball sampling. One focus group with 5 participants and 12 in-depth interviews were conducted with participants working in diverse fields from universities (n = 10), the National Chinese Center for Disease Control and Prevention (n = 4), the Chinese National Cancer Center (n = 1), the Chinese National Center for Cardiovascular Disease (n = 1), and China office of a global research institute (n = 1) from May to December 2021 to reach saturation. Data were initially analyzed using inductive thematic analysis. The designing for dissemination (D4D) logic model was then used to organize themes and subthemes. Two coders independently coded all transcripts and discussed disparities to reach a consensus. Results: Out of 17 participants, 12 misunderstood the concept of dissemination; 14 had disseminated to non-research audiences: 10 to the public, 10 to practitioners, and 9 to policymakers. We identified multiple barriers to dissemination to non-research audiences across four phases of the D4D logic model, including low priority of dissemination, limited application of D4D strategies, insufficient support from the research organizations, practice settings, and health systems, and overemphasis on academic publications. Conclusions: There was a lack of understanding and experience of dissemination, indicating a lack of emphasis on active dissemination in China. We provide implications for raising awareness, building capacity, facilitating multidisciplinary collaboration, providing incentives and infrastructure, changing climate and culture, establishing communication and executive networks, and accelerating systematic shifts in impact focus. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Ultrasomics differentiation of malignant and benign focal liver lesions based on contrast-enhanced ultrasound.
- Author
-
Hu, Hang-Tong, Li, Ming-De, Zhang, Jian-Chao, Ruan, Si-Min, Wu, Shan-Shan, Lin, Xin-Xin, Kang, Hai-Yu, Xie, Xiao-Yan, Lu, Ming-De, Kuang, Ming, Xu, Er-Jiao, and Wang, Wei
- Subjects
CONTRAST-enhanced ultrasound ,FEATURE extraction ,FEATURE selection ,NOMOGRAPHY (Mathematics) ,ULTRASONIC imaging - Abstract
Objectives: To establish a nomogram for differentiating malignant and benign focal liver lesions (FLLs) using ultrasomics features derived from contrast-enhanced ultrasound (CEUS). Methods: 527 patients were retrospectively enrolled. On the training cohort, ultrasomics features were extracted from CEUS and b-mode ultrasound (BUS). Automatic feature selection and model development were performed using the Ultrasomics-Platform software, outputting the corresponding ultrasomics scores. A nomogram based on the ultrasomics scores from artery phase (AP), portal venous phase (PVP) and delayed phase (DP) of CEUS, and clinical factors were established. On the validation cohort, the diagnostic performance of the nomogram was assessed and compared with seniorexpert and resident radiologists. Results: In the training cohort, the AP, PVP and DP scores exhibited better differential performance than BUS score, with area under the curve (AUC) of 84.1-85.1% compared with the BUS (74.6%, P < 0.05). In the validation cohort, the AUC of combined nomogram and expert was significantly higher than that of the resident (91.4% vs. 89.5% vs. 79.3%, P < 0.05). The combined nomogram had a comparable sensitivity with the expert and resident (95.2% vs. 98.4% vs. 97.6%), while the expert had a higher specificity than the nomogram and the resident (80.6% vs. 72.2% vs. 61.1%, P = 0.205). Conclusions: A CEUS ultrasomics based nomogram had an expert level performance in FLL characterization. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
28. Reciprocating thermal behaviour in a series of 7-coordinate Mn(II) and Co(II) complexes.
- Author
-
Zhang, Le-Shan, Jin, Xin-Xin, Wang, Li-Xin, Liu, Lu-Lu, Qi, Rui-Yue, Zhang, Xu, Wang, Bing-Wu, Xiang, Jing, Liu, Ji-Yan, and Gao, Song
- Abstract
Solvothermal reactions of tetradentate ligands, H
2 L1 –H2 L3 , with hydrated Mn(ClO4 )2 and hydrated Co(NO3 )2 afforded the mononuclear neutral compounds [MnII (L1 )(H2 O)3 ]·3H2 O (1), [MnII (L2 )(H2 O)3 ]·3H2 O (2), [MnII (L3 )(H2 O)2 (CH3 CH2 OH)]·3H2 O·CH3 CH2 OH (3), and [CoII (L1 )(H2 O)3 ]·3H2 O (4) (H2 L1 = 1,10-phenanthroline-2,9-dicarboxylic acid, H2 L2 = 2,2′-bipyridine-6,6′-dicarboxylic acid, and H2 L3 = 6,6′-bis(1H-tetrazol-5-yl)-2,2′-bipyridine), respectively, in moderate yields. All the compounds were characterized by X-ray crystallography and all the metal centres were coordinated by a tetradentate ligand and three solvent molecules in a distorted 7-coordinate pentagonal bipyramidal geometry. Through magnetic measurements, 1–4 show interesting slow magnetic relaxation under an external direct current (dc) field. It is noted that the temperature dependence of the relaxation time (τ) in all the compounds exhibits the 'reciprocating thermal behaviour' (RTB), where the weak inter-molecular interactions in the solid state are responsible for this strange phenomenon. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
29. Unlocking Quasi‐Monophase Behavior in NASICON Cathode to Drive Fast‐Charging Toward Durable Sodium‐Ion Batteries.
- Author
-
Zhao, Xin‐Xin, Wang, Xiao‐Tong, Gu, Zhen‐Yi, Guo, Jin‐Zhi, Cao, Jun‐Ming, Liu, Yan, Li, Jie, Huang, Zhi‐Xiong, Zhang, Jing‐Ping, and Wu, Xing‐Long
- Subjects
ELECTRON transport ,CHARGE exchange ,OXIDATION-reduction reaction ,STRUCTURAL stability ,CATHODES - Abstract
The NASICON cathode, Na3V2(PO4)3, has garnered significant attention due to its robust framework with fast Na+ migration. To expand its application scenarios by diversified electronic reaction, the substitution of vanadium with cost‐effective and abundant redox elements is a special research topic. Nevertheless, in terms of reducing toxicity, increasing Na content and widening voltage range, the V4+/5+ redox couple in Na4FeV(PO4)3 often accompanies asymmetric and irreversible electrochemical reactions that pose a dilemma for capacity and structural stability, especially at high currents. Herein, in this work, Na4FeV1/3Ti2/3(PO4)3 (NFVT) has achieved highly reactive of multiple electron transfer (Ti2+/3+, Fe2+/3+, and V3+/4+/5+) by utilizing the redox reaction with quasi‐monophase behavior, and it can reserve great capacity retention after 3,000 cycles. More competitively, its boosting kinetics makes the fast‐charging characteristic, just requiring only 3.63 min to reach 80% state of charge at 2 C. The rapid ion/electron transport dynamics can achieve the decay of only 0.043% per cycle by unlocking the quasi‐monophase behavior in the framework of NFVT full cells. The present study provides a fresh perspective on designing cathode materials with fast‐charging capabilities for sodium‐ion batteries. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. Dynamic balance of circles with one support point on pommel horse exercise.
- Author
-
Yamasaki, Taiga, Nishiwaki, Kazuie, Nawa, Motoyuki, Yamawaki, Kyoji, Nakamura, Yoshihiko, Xin, Xin, and Izumi, Shinsaku
- Subjects
ANGULAR momentum (Mechanics) ,DYNAMIC balance (Mechanics) ,WRIST joint ,CENTER of mass ,SHOULDER joint ,TOES - Abstract
Double-leg circles on pommel horse exercises require a high degree of dynamic balance. However, theoretical conditions for maintaining dynamic balance are unclear. The purpose of this paper is to propose a simple theoretical model of the dynamic balance of the circles, and to illustrate its qualitative properties. To this end, the body of a gymnast is simply modeled as one rigid body with one support point, and symmetric and constant-velocity circles are assumed in most analyses. The condition that the torques of wrist and shoulder joints are zero is assumed as a dynamic balance condition with minimum strength. A control law is proposed to demonstrate the motion. Various properties of the dynamic balance condition are analyzed as follows. In the symmetric circles, (1) as the period of a circle decrease, the heights and the radius of the toes increase, and (2) the rotation of the body around its longitudinal axis in the double-leg circle has the effect of lifting the toes. (3) The shoulder and wrist torques can change the pose around the dynamic balance condition. In asymmetric circles, (4) the radius of the center of mass (CoM) increases as the angular velocity of the CoM around the support point decreases, and (5) the body angle with respect to the horizontal plane increases as the upward acceleration of the CoM increases. Moreover, mechanical principles of the circles are discussed as follows. (6) The CoM motion during the symmetric circles of the simple model can be related to the conical pendulum. In the simple model, (7) the pommel reaction force should be parallel to the arm segment when the wrist torque and the shoulder torque are equal or zero, and (8) to change the vertical component of the angular momentum of the body around the support point, the wrist torque around the vertical axis is needed. These results provide theoretical and qualitative insights into understanding and improving pommel horse exercise. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. Dynamic balance of circles with one support point on pommel horse exercise.
- Author
-
Yamasaki, Taiga, Nishiwaki, Kazuie, Nawa, Motoyuki, Yamawaki, Kyoji, Nakamura, Yoshihiko, Xin, Xin, and Izumi, Shinsaku
- Subjects
ANGULAR momentum (Mechanics) ,DYNAMIC balance (Mechanics) ,WRIST joint ,CENTER of mass ,SHOULDER joint ,TOES - Abstract
Double-leg circles on pommel horse exercises require a high degree of dynamic balance. However, theoretical conditions for maintaining dynamic balance are unclear. The purpose of this paper is to propose a simple theoretical model of the dynamic balance of the circles, and to illustrate its qualitative properties. To this end, the body of a gymnast is simply modeled as one rigid body with one support point, and symmetric and constant-velocity circles are assumed in most analyses. The condition that the torques of wrist and shoulder joints are zero is assumed as a dynamic balance condition with minimum strength. A control law is proposed to demonstrate the motion. Various properties of the dynamic balance condition are analyzed as follows. In the symmetric circles, (1) as the period of a circle decrease, the heights and the radius of the toes increase, and (2) the rotation of the body around its longitudinal axis in the double-leg circle has the effect of lifting the toes. (3) The shoulder and wrist torques can change the pose around the dynamic balance condition. In asymmetric circles, (4) the radius of the center of mass (CoM) increases as the angular velocity of the CoM around the support point decreases, and (5) the body angle with respect to the horizontal plane increases as the upward acceleration of the CoM increases. Moreover, mechanical principles of the circles are discussed as follows. (6) The CoM motion during the symmetric circles of the simple model can be related to the conical pendulum. In the simple model, (7) the pommel reaction force should be parallel to the arm segment when the wrist torque and the shoulder torque are equal or zero, and (8) to change the vertical component of the angular momentum of the body around the support point, the wrist torque around the vertical axis is needed. These results provide theoretical and qualitative insights into understanding and improving pommel horse exercise. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Dose tracking assessment for magnetic resonance guided adaptive radiotherapy of rectal cancers.
- Author
-
Xin, Xin, Tang, Bin, Wu, Fan, Lang, Jinyi, Li, Jie, Wang, Xianliang, Liu, Min, Zhang, Qingxian, Liao, Xiongfei, Yang, Feng, and Orlandini, Lucia Clara
- Subjects
RECTAL cancer ,MEDIAN (Mathematics) ,IMAGE-guided radiation therapy ,COMPUTED tomography ,SMALL intestine - Abstract
Background: Magnetic resonance-guided adaptive radiotherapy (MRgART) at MR-Linac allows for plan optimisation on the MR-based synthetic CT (sCT) images, adjusting the target and organs at risk according to the patient's daily anatomy. Conversely, conventional linac image-guided radiotherapy (IGRT) involves rigid realignment of regions of interest to the daily anatomy, followed by the delivery of the reference computed tomography (CT) plan. This study aims to evaluate the effectiveness of MRgART versus IGRT for rectal cancer patients undergoing short-course radiotherapy, while also assessing the dose accumulation process to support the findings and determine its usefulness in enhancing treatment accuracy. Methods: Nineteen rectal cancer patients treated with a 1.5 Tesla MR-Linac with a prescription dose of 25 Gy (5 Gy x 5) and undergoing daily adapted radiotherapy by plan optimization based on online MR-based sCT images, were included in this retrospective study. For each adapted plan (), a second plan () was generated by recalculating the reference CT plan on the daily MR-based sCT images after rigid registration with the reference CT images to simulate the IGRT workflow. Dosimetry of and was compared for each fraction. Cumulative doses on the first and last fractions were evaluated for both workflows. The dosimetry per single fraction and the cumulative doses were compared using dose-volume histogram parameters. Results: Ninety-five fractions delivered with MRgART were compared to corresponding simulated IGRT fractions. All MRgART fractions fulfilled the target clinical requirements. IGRT treatments did not meet the expected target coverage for 63 out of 94 fractions (67.0%), with 13 fractions showing a V95 median point percentage decrease of 2.78% (range, 1.65-4.16%), and 55 fractions exceeding the V107% threshold with a median value of 15.4 cc (range, 6.0-43.8 cc). For the bladder, the median values were 18.18 Gy for the adaptive fractions and 19.60 Gy for the IGRT fractions. Similarly the median values for the small bowel were 23.40 Gy and 25.69 Gy, respectively. No statistically significant differences were observed in the doses accumulated on the first or last fraction for the adaptive workflow, with results consistent with the single adaptive fractions. In contrast, accumulated doses in the IGRT workflow showed significant variations mitigating the high dose constraint, nevertheless, more than half of the patients still did not meet clinical requirements. Conclusions: MRgART for short-course rectal cancer treatments ensures that the dose delivered matches each fraction of the planned dose and the results are confirmed by the dose accumulation process, which therefore seems redundant. In contrast, IGRT may lead to target dose discrepancies and non-compliance with organs at risk constraints and dose accumulation can still highlight notable dosimetric differences. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Piperidine-based ionic liquid additive with electrostatic shielding and redox activity enabling advanced lithium–oxygen batteries.
- Author
-
Gao, Meng-Lin, Wang, Qian-Yan, Liao, Ya-Ling, Chen, Wei-Rong, Huang, Zhong-Yu, Zhuang, Xin-Xin, and Zhang, Xiao-Ping
- Subjects
LITHIUM-air batteries ,IONIC liquids ,OXIDATION-reduction reaction ,DENDRITIC crystals ,ADDITIVES ,LITHIUM cells - Abstract
Here, we propose a piperidine-based ionic liquid additive. The electrostatic shielding effect of the piperidine cation (PP13
+ ) effectively inhibits the growth of lithium dendrites. Simultaneously, the redox activity of the bromine anion synergistically reduces the overpotential. This approach significantly improves the cycling performance of lithium – oxygen batteries. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
34. The Efficacy of Acupuncture, Exercise Rehabilitation, and Their Combination in the Treatment of Knee Osteoarthritis: A Randomized Controlled Trial.
- Author
-
Liu, Xin-Yuan, Ma, Yue, Huang, Zong-Yue, Xiao, Xin-Xin, and Guan, Ling
- Subjects
KNEE osteoarthritis ,ANALGESIA ,TREATMENT effectiveness ,RANDOMIZED controlled trials ,ACUPUNCTURE - Abstract
To assess the effectiveness of acupuncture, exercise rehabilitation, and their combination in treating knee osteoarthritis (KOA). Methods: This randomized controlled trial was done on patients with KOA, who were randomly allocated to three groups: acupuncture (AP), exercise rehabilitation (ER), or a combination of acupuncture and exercise rehabilitation (AE). The study lasted 12 weeks with 4 weeks of treatment and 8 weeks of follow-up. The primary outcome was the response rate, which was determined by the percentage of participants who experienced a significant improvement in pain and function by the fourth week. The primary analysis utilized a Z test for proportions in the modified intent-to-treat population, consisting of all randomized participants with at least one post-baseline measurement. Results: Out of the 120 patients initially enrolled in the study, 110 completed the trial and were included in the intention-to-treat analysis. Response rates at week 4 were 65.7% (23 out of 35), 58.3% (21 out of 36), and 83.3% (32 out of 39) in the AP, ER, and AE groups, respectively. The response rate in the AE group was found to be significantly higher than that in the ER group at week 4. No significant differences were observed in the overall response rates between the AP and ER groups, as well as between the AP and AE groups. Conclusion: Our research indicates that both acupuncture and exercise rehabilitation can effectively enhance pain relief, functional improvement, and joint mobility in individuals aged 45 to 70 with moderate to severe chronic KOA. Furthermore, the AE group demonstrated the highest response rate. These beneficial outcomes were sustained for a minimum of 8 weeks post-treatment. The combination of acupuncture and exercise rehabilitation appears to enhance the overall therapeutic efficacy for KOA patients, suggesting a synergistic effect that may be particularly advantageous for those with moderate to severe symptoms. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Information hiding algorithm in compressive sensing encrypted domain based on homomorphism addition.
- Author
-
LI Ming and XIN Xin
- Abstract
Information hiding ensures necessary security of massive data in the cloud and Internet of things environments. Although traditional encryption can protect the privacy of the image effectively, it cannot protect the image in other aspects such as copyright and integrity. Therefore, information hiding in encrypted domain is required and challenged. An information hiding scheme in homomorphic encrypted domain is proposed. Firstly, the homomorphism of compressive sensing is explored, and it is found that doubling the measurements obtained by compressive sensing is equivalent to directly extending the original signal before compressive sensing. Secondly, by using homomorphic addition, information hiding in the compressive sensing encrypted domain is realized based on differential extension. The experimental simulation results show that the proposed algorithm has satisfactory performances in both privacy protection and information hiding, and the embedding capacity is higher than the related state of art works. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
36. Biological Evaluation of Lysionotin: a Novel Inhibitor of 5-Lipoxygenase for Anti-glioma.
- Author
-
Shao, Xin-xin, Chen, Cong, Liu, Jie, Li, Qing-jun, He, Shan, Qi, Xiang-Hua, Fu, Xian-jun, and Wang, Zhen-guo
- Subjects
CHINESE medicine ,COMPUTER-assisted molecular modeling ,FLOW cytometry ,GLIOMAS ,LIQUID chromatography-mass spectrometry ,HERBAL medicine ,FLAVONOIDS ,CELL proliferation ,ENZYME-linked immunosorbent assay ,SURFACE plasmon resonance ,CELLULAR signal transduction ,MOLECULAR structure ,CELL survival - Abstract
Objective: To explore the potential mechanism of lysionotin in treating glioma. Methods: First, target prediction based on Bernoulli Naïve Bayes profiling and pathway enrichment was used to predict the biological activity of lysionotin. The binding between 5-lipoxygenase (5-LO) and lysionotin was detected by surface plasmon resonance (SPR) and molecular docking, and the inhibitory effects of lysionotin on 5-LO and proliferation of glioma were determined using enzyme inhibition assay in vitro and cell viability analysis, respectively. Furthermore, the pharmaceutical effect of lysionotin was explored by cell survival rate analysis and liquid chromatography with tandem mass spectrometry (LC-MS/MS). The protein expression, intracellular calcium ion concentration and cytoskeleton detection were revealed by Western blot, flow cytometry and fluorescence labeling, respectively. Results: Target prediction and pathway enrichment revealed that lysionotin inhibited 5-LO, a key enzyme involved in the arachidonic acid metabolism pathway, to inhibit the proliferation of glioma. Molecular docking results demonstrated that 5-LO can be binding to lysionotin through hydrogen bonds, forming bonds with His600, Gln557, Asn554, and His372. SPR analysis further confirmed the interaction between 5-LO and lysionotin. Furthermore, enzyme inhibition assay in vitro and cell survival rate analysis revealed that 50% inhibition concentration of lysionotin and the median effective concentration of lysionotin were 90 and 16.58 µmol/L, respectively, and the results of LC-MS/MS showed that lysionotin inhibited the production of 5S-hydroperoxy-eicosatetraenoic acid (P<0.05), and moreover, the LC-MS/MS results indicated that lysionotin can enter glioma cells well (P<0.01) and inhibit their proliferation. Western blot analysis demonstrated that lysionotin can inhibit the expression of 5-LO (P<0.05) and downstream leukotriene B4 receptor (P<0.01). In addition, the results showed that lysionotin affected intracellular calcium ion concentration by inhibiting 5-LO to affect the cytoskeleton, as determined by flow cytometry and fluorescence labeling. Conclusion: Lysionotin binds to 5-LO could suppress glioma by inhibiting arachiodonic acid metabolism pathway. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. Current State of Targeted Therapy in Adult Langerhans Cell Histiocytosis and Erdheim–Chester Disease.
- Author
-
Lin, He and Cao, Xin-xin
- Abstract
The mitogen-activated protein kinase (MAPK) pathway is a key driver in many histiocytic disorders, including Langerhans cell histiocytosis (LCH) and Erdheim–Chester disease (ECD). This has led to successful and promising treatment with targeted therapies, including BRAF inhibitors and MEK inhibitors. Additional novel inhibitors have also demonstrated encouraging results. Nevertheless, there are several problems concerning targeted therapy that need to be addressed. These include, among others, incomplete responsiveness and the emergence of resistance to BRAF inhibition as observed in other BRAF-mutant malignancies. Drug resistance and relapse after treatment interruption remain problems with current targeted therapies. Targeted therapy does not seem to eradicate the mutated clone, leading to inevitable relapes, which is a huge challenge for the future. More fundamental research and clinical trials are needed to address these issues and to develop improved targeted therapies that can overcome resistance and achieve long-lasting remissions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
38. The Impact of Digital Governance on Entrepreneurial Activity in Relatively Poor Areas: Evidence from Tibet, China.
- Author
-
Xu, Aiyan, Li, Pengji, and Xin, Xin
- Abstract
This paper examines the impact of digital governance on entrepreneurial activity in relatively poor areas from both theoretical and empirical perspectives. Our study is twofold. First, we utilize a economic geography model to theoretically analyze the influence of digital governance on regional entrepreneurial endeavors and develop research hypotheses. Second, using county panel data from Tibet spanning from 2001 to 2021, we empirically examine the influence of digital governance on entrepreneurial activity. The results show that digital governance can significantly increase regional entrepreneurial activity, and that the effect exhibits an upward and then a downward trend over time, with some spatial spillover effects. We argue that differences in regional network infrastructure are an important heterogeneity factor affecting digital governance's ability to increase entrepreneurial activity. Our conclusions remain robust to various tests. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
39. Serum CXCL13 level is related to treatment response and predicts disease prognosis in Waldenström macroglobulinemia.
- Author
-
Chen, Jia, Jia, Ming-nan, Cai, Hao, Li, Ze-peng, Li, Jian, Zhou, Dao-bin, and Cao, Xin-xin
- Subjects
ENZYME-linked immunosorbent assay ,B cells ,OVERALL survival ,PROGNOSIS ,DISEASE progression - Abstract
Waldenström macroglobulinemia (WM) is a type of B-cell lymphoma that produces IgM. Our study aimed to investigate the role of CXCL13, a chemokine essential for B lymphocytes, in the evaluation of treatment response and prognosis in WM. We collected serum samples and clinical data from 72 WM patients, with 69 patients receiving systemic therapy and 3 patients opting not to receive treatment. Serum CXCL13 levels at baseline and after six months of treatments were measured by enzyme-linked immunosorbent assay. The median serum level of CXCL13 was 1 539.2 pg/ml (range 10.0–21 389.9) at baseline and significantly decreased to 123.1 pg/ml (range 0.0–6 741.5) after 6 months of treatments. At baseline, higher CXCL13 levels were associated with lower hemoglobin levels (p = 0.001), higher β2-microglobulin levels (p = 0.001), lower albumin levels (p = 0.046), and higher IPSS-WM scores (p = 0.013). After 6 months of treatment, patients who achieved PR/VGPR had significantly lower CXCL13 levels compared to those with SD (70.2 pg/ml vs 798.6 pg/ml, p = 0.002). The median follow-up period was 40 months (range 4.2–188). Eight patients died during the follow-up period. Overall survival differed based on CXCL13 levels. When grouped by baseline CXCL13 levels, the median OS was 60.0 months in patients with serum CXCL13 > 2 000 pg/ml, while it was not reached in patients with low CXCL13 levels (p < 0.001). Based on CXCL13 levels after the treatments, the median OS was 74.0 months in patients with serum CXCL13 > 200 pg/ml, while it was not reached in patients with CXCL13 ≤ 200 pg/ml. In a subgroup of 28 patients with a series of serum samples, the increase of serum CXCL13 level was associated with disease progression or the start of next-line therapy (p < 0.001). Our study concludes that serum CXCL13 levels decrease in WM patients treated with various regimens and correlate with treatment response. Detecting serum CXCL13 at baseline or after treatment help in predicting prognosis. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
40. Diversifying Sequential Recommendation with Retrospective and Prospective Transformers.
- Author
-
Shi, Chaoyu, Ren, Pengjie, Fu, Dongjie, Xin, Xin, Yang, Shansong, Cai, Fei, Ren, Zhaochun, and Chen, Zhumin
- Abstract
The article focuses on addressing the challenge of enhancing recommendation diversity in sequential recommendation (SR) models, particularly for short interaction sequences where limited information hampers accurate modeling of user intents. It mentions the proposed TRIER model tackles this by retrospectively predicting historical interactions to augment sequences and prospectively capturing potential intents.
- Published
- 2024
- Full Text
- View/download PDF
41. Effect of pressure on the magnetic, mechanical, and dynamical properties of L10-FePt alloy.
- Author
-
Yu, Guo-liang, Cheng, Tai-min, and Zhang, Xin-xin
- Subjects
SPONTANEOUS magnetization ,DENSITY of states ,MECHANICAL alloying ,ANISOTROPY ,PHONONS - Abstract
The magnetic, elastic, and dynamical properties of L1
0 -type FePt alloy are investigated under high pressure using first-principles calculations. The critical pressure of ferromagnetism collapse is identified as 96.7 GPa, and the alloy exhibits mechanical stability over the studied pressure range up to 120 GPa. Below the critical pressure, ductility hardly changes with pressure, and the elastic anisotropy is enhanced by pressure. The ductility and elastic anisotropy of the system show a sudden decrease beyond the critical pressure. Dynamical stabilities under ambient and high pressures are verified by phonon spectra. The alloy is dynamically stable before the critical pressure of 96.7 GPa due to spontaneous magnetization. Finally, the anisotropy of phonon density of states under high pressure is evaluated in detail, and the result indicates that the degree of anisotropy is almost independent of pressure. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
42. Sharp needle reconstructs peripheral outflow for patients with malfunctional arteriovenous fistula.
- Author
-
Xu, Yong, Zhu, Shu-Yuan, Li, Yuan-Ming, Liu, Xin-Xin, Zhang, Hao, and Wang, Lu-Fang
- Subjects
NEEDLES & pins ,TRANSLUMINAL angioplasty ,ARTERIOVENOUS fistula ,NEEDLESTICK injuries ,HEMODIALYSIS patients - Abstract
To investigate the feasibility and efficacy of combining ultrasound-guided sharp needle technique with percutaneous transluminal angioplasty (PTA) for treating outflow stenosis or dysfunction in arteriovenous fistula (AVF) among hemodialysis patients. From October 2021 to March 2023, patients with occluded or malfunctional fistula veins not amenable to regularly angioplasty were retrospectively enrolled in the study. They underwent ultrasound-guided sharp needle intervention followed by PTA. Data on the location and length between the two veins, technical success, clinical outcomes, and complications were collected. Patency rates post-angioplasty were calculated through Kaplan-Meier analysis. A total of 23 patients were included. The mean length of the reconstructed extraluminal segment was 3.18 cm. The sharp needle opening was performed on the basilic vein (60.9%), brachial vein (26.1%), or upper arm cephalic vein (13%) to create outflow channels. Postoperatively, all cases presented with mild subcutaneous hematomas around the tunneling site and minor diffuse bleeding. The immediate patency rate for the internal fistulas was 100%, with 3-month, 6-month, and 12-month patency rates at 91.3%, 78.3%, and 43.5%, respectively. Sharp needle technology merged with PTA presents an effective and secure minimally invasive method for reconstructing the outflow tract, offering a new solution for recanalizing high-pressure or occluded fistulas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Association between the levels of urinary cell cycle biomarkers and non-recovery of renal function among critically ill geriatric patients with acute kidney injury.
- Author
-
Cheng, Li, Jia, Hui-Miao, Zheng, Xi, Jiang, Yi-Jia, Xin, Xin, and Li, Wen-Xiong
- Subjects
ACUTE kidney failure ,INSULIN-like growth factor-binding proteins ,APACHE (Disease classification system) ,KIDNEY physiology ,CRITICALLY ill - Abstract
The lack of early renal function recovery among geriatric patients with acute kidney injury (AKI) in the intensive care unit (ICU) is a commonly observed and acknowledged poor prognostic factor, especially for older adults. However, no reliable prognostic biomarker is available for identifying individuals at risk of renal non-recovery or mortality in older adults. In this prospective observational cohort study, we enrolled critically ill older adults (aged ≥ 60 years) with AKI from the ICU and followed their disease progression. The primary endpoint was renal non-recovery within seven days of follow-up, while the secondary endpoint was the determinants of 30-day mortality after AKI. We assessed the predictive accuracy using receiver operating characteristic curves and performed between-group comparisons using the log-rank test. Among 209 older adults, 117 (56.0%) experienced renal recovery. Multiple regression analysis revealed that urine levels of tissue inhibitor of metalloproteinase-2 (TIMP-2) multiplied by insulin-like growth factor-binding protein 7 (IGFBP7) ([TIMP-2]*[IGFBP7]), AKI stages 2–3, and the Acute Physiology and Chronic Health Evaluation (APACHE II) score were independently associated with renal non-recovery. The regression model incorporating [TIMP-2]*[IGFBP7] demonstrated a fair predictive value (AUC 0.774, p < 0.001), with the optimal threshold set at 0.81 (ng/mL)
2 /1000. When [TIMP-2]*[IGFBP7] was combined with AKI severity and the APACHE score, the AUC increased to 0.851. In conclusion, urine [TIMP-2]*[IGFBP7] is a reliable biomarker associated with renal non-recovery in critically ill older adults, and its predictive efficacy can be further enhanced when combined with AKI severity and the APACHE score. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
44. Clinical features and prognostic factors of cryptococcal infections in HIV-infected patients: a 10-year study from an infectious disease specialist hospital.
- Author
-
Fang-Fang Dai, Jin-Li Lou, Yan-Hua Yu, Ming Chen, and Xin-Xin Lu
- Subjects
HIV infections ,CRYPTOCOCCOSIS ,HIV ,DIAGNOSIS of HIV infections ,IMMUNOLOGICAL deficiency syndromes - Abstract
Background: Cryptococcosis is an invasive infection that commonly affects immunosuppressed individuals, especially patients with HIV infection. Cryptococcal infection in HIV-infected patients should be considered a major health concern because it is associated with high morbidity and mortality rates. In this study, we aimed to evaluate the clinical characteristics and prognostic factors of cryptococcal infections in human immunodeficiency virus (HIV)-infected patients to facilitate effective clinical management and improve patient outcomes. Methods: We reviewed and analyzed the clinical data and relevant laboratory test results of HIV-infected patients with positive cryptococcal cultures and reserved strains between 2013 and 2023 from Beijing Youan Hospital affiliated to Capital Medical University. The clinical characteristics and laboratory test results of the patients were compared, and the correlation between parameters and the prognoses of the patients at different observation timepoints (3, 6, 9, and 12 months) was analyzed. Results: A total of 76 patients (70 males and six females; median age, 37 years) were included in this study. The results indicated that the later the initiation of antiretroviral therapy (ART) after the diagnosis of HIV infection (> 6 months), the higher the probability of death. Analysis of the correlation between the time of ART initiation and the timing of treatment for cryptococcal infections showed that the time of ART initiation was strongly related to survival at different timepoints. Initiation of ART time within 0-4 weeks, 4-6 weeks and more than 6weeks of starting treatment for Cryptococcus infection was associated with a lower mortality rate at 12-month, the 3-month, 6- and 9-month follow-up timepoint separately. Conclusions: Although cryptococcal infection in HIV-infected patients continues to be a challenging and intricate issue, ART is a key factor that affects its prognosis. The later ART is started, theworse the prognosis of the infection. The time of ART initiation and the timing of treatment for cryptococcal infections should be further refined and balanced based on different clinical courses. Thus, clinicians should pay closer attention to cryptococcal infections in patients with HIV infection and initiate ART based on the patient's clinical condition. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
45. Automatic recognition system for concrete cracks with support vector machine based on crack features.
- Author
-
Wang, Rui, Chen, Rui-Qi, Guo, Xin-Xin, Liu, Jia-Xuan, and Yu, Hai-Ying
- Subjects
SUPPORT vector machines ,RADIAL basis functions ,IMAGE segmentation ,AUTOMATIC identification ,IMAGE processing - Abstract
Cracks are a common problem in concrete surfaces. With the continuous optimization of machine vision-based inspection systems, effective crack detection and recognition is the core of the entire system. In this study, support vector machine (SVM) was used to distinguish cracks from other regions. To complete the recognition system of the SVM, a framework consisting of an image processing and recognition model was proposed. An algorithm combining the Prewitt operator with the Otsu threshold was proposed for image segmentation. The binary image processed by the new algorithm combined with mathematical morphology can result in a more complete crack zone and fewer interference regions. After the initial parameter extraction, most of the impurity areas were screened by preliminary discrimination, removing 99% of the impurities. This processing step ensured the balance and effectiveness of the samples. To establish an automatic identification model based on SVM with a radial basis function, compactness, occupancy rate, and length–width ratio were selected as input parameters after comparing these three features with all six features of the crack. The recognition accuracy of this system reaches 97.14%, demonstrating that the proposed method is effective and satisfies practical requirements. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
46. Distinguishing the impact of oxidation on the Josephson junction oxide barrier through the 1/f behavior.
- Author
-
Chen, Yong, Duan, Peng, Jia, Zhi-Long, Yang, Xin-Xin, Du, Lei, Tao, Hao-Ran, Zhang, Chi, Guo, Liang-Liang, Zhang, Hai-Feng, Wang, Tian-Le, Zhao, Ze-An, Yang, Xiao-Yan, Zhang, Sheng, Zhao, Ren-Ze, Wang, Peng, Kong, Wei-Cheng, and Guo, Guo-Ping
- Subjects
JOSEPHSON junctions ,OXIDATION ,OXIDES ,NOISE - Abstract
The quality of the oxide barrier in Josephson junctions (JJs) is crucial for devices with it as the core structure. Despite the critical nature of the oxidation process in JJ fabrication, there remains a lack of systematic research on its impact. Our study aims to fill this gap by comprehensively investigating the influence of oxidation parameters and methods on the oxide barrier quality. To achieve this, we evaluate the low-frequency 1 / f noise of JJs produced using various fabrication processes. Our findings demonstrate that a weak oxidation strength (oxygen pressure × exposure time) and a dynamic oxidation method contribute positively to the formation of high-quality oxide barriers. This research provides an important reference for optimizing the oxidation process. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Synergistic Catalysis of Water-Soluble Exogenous Catalysts and Reservoir Minerals during the Aquathermolysis of Heavy Oil.
- Author
-
Wang, Qian, Zhang, Shu, Chen, Xiang, Ni, Jianjun, Du, Jialu, Li, Yongfei, Xin, Xin, Zhao, Bin, and Chen, Gang
- Subjects
HEAVY oil ,ESSENTIAL oils ,PETROLEUM ,CATALYTIC cracking ,CRYSTAL morphology - Abstract
Oil serves as the essential fuel and economic foundation of contemporary industry. However, the use of traditional light crude oil has exceeded its supply, making it challenging to meet the energy needs of humanity. Consequently, the extraction of heavy oil has become crucial in addressing this demand. This research focuses on the synthesis of several water-soluble catalysts that can work along with reservoir minerals to catalyze the hydrothermal cracking process of heavy oil. The goal is to effectively reduce the viscosity of heavy oil and lower the cost of its extraction. Based on the experimental findings, it was observed that when oil sample 1 underwent hydrothermal cracking at a temperature of 180 °C for a duration of 4 h, the amount of water added and catalyst used were 30% and 0.2% of the oil sample dosage, respectively. It was further discovered that the synthesized Mn(II)C was able to reduce the viscosity of oil sample 1 by 50.38%. The investigation revealed that the combination of Mn(II)C + K exhibited a significant synergistic catalytic impact on reducing viscosity. Initially, the viscosity reduction rate was 50.38%, which climbed to 61.02%. Subsequently, when catalyzed by the hydrogen supply agent isopropanol, the rate of viscosity reduction rose further to 91.22%. Several methods, such as freezing point analysis, thermogravimetric analysis, DSC analysis, component analysis, gas chromatography, wax crystal morphology analysis, and GC-MS analysis, were conducted on aqueous organic matter derived from heavy oil after undergoing different reaction systems. These analyses confirmed that the viscosity of the heavy oil was decreased. By studying the reaction mechanism of the model compound and analyzing the aqueous phase, the reaction largely involves depolymerization between macromolecules, breakdown of heteroatom chains, hydrogenation, ring opening, and other related consequences. These actions diminish the strength of the van der Waals force and hydrogen bond in the recombinant interval, impede the creation of a grid-like structure in heavy oil, and efficiently decrease its viscosity. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. A Practical and Modular Method for Direct C−H Functionalization of the BODIPY Core via Thianthrenium Salts.
- Author
-
Dong, Xin‐Xin, Liu, Jing‐Guo, Zhang, Hao‐Xiang, and Zhang, Bo
- Subjects
STAINS & staining (Microscopy) ,RADICALS (Chemistry) ,OPERATING rooms ,ALKENYLATION ,ARYLATION - Abstract
Direct structural modification of small‐molecule fluorophores represents a straightforward and appealing strategy for accessing new fluorescent dyes with desired functionalities. We report herein a general and efficient visible‐light‐mediated method for the direct C−H functionalization of BODIPY, an important fluorescent chromophore, using readily accessible and bench‐stable aryl and alkenylthianthrenium salts. This practical approach operates at room temperature with extraordinary site‐selectivity, providing a step‐economical means to construct various valuable aryl‐ and alkenyl‐substituted BODIPY dyes. Remarkably, this protocol encompasses a broad substrate scope and excellent functional‐group tolerance, and allows for the modular synthesis of sophisticated symmetrical and asymmetrical disubstituted BODIPYs by simply employing different combinations of thianthrenium salts. Moreover, the late‐stage BODIPY modification of complex drug molecules further highlights the potential of this novel methodology in the synthesis of fluorophore‐drug conjugates. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Signals from intestinal microbiota mediate the crosstalk between the lung-gut axis in an influenza infection mouse model.
- Author
-
Yijia Zhang, Youdi Wan, Xin Xin, Yixuan Qiao, Wenna Qiao, Jihui Ping, and Juan Su
- Subjects
REGULATORY T cells ,VIRUS diseases ,LIQUID chromatography-mass spectrometry ,INFLUENZA A virus ,INDOLEAMINE 2,3-dioxygenase - Abstract
Introduction: Introduction: The influenza virus primarily targets the respiratory tract, yet both the respiratory and intestinal systems suffer damage during infection. The connection between lung and intestinal damage remains unclear. Methods: Our experiment employs 16S rRNA technology and Liquid Chromatography-Mass Spectrometry (LC-MS) to detect the impact of influenza virus infection on the fecal content and metabolites in mice. Additionally, it investigates the effect of influenza virus infection on intestinal damage and its underlying mechanisms through HE staining, Western blot, Q-PCR, and flow cytometry. Results: Our study found that influenza virus infection caused significant damage to both the lungs and intestines, with the virus detected exclusively in the lungs. Antibiotic treatment worsened the severity of lung and intestinal damage. Moreover, mRNA levels of Toll-like receptor 7 (TLR7) and Interferon-b (IFN-b) significantly increased in the lungs post-infection. Analysis of intestinal microbiota revealed notable shifts in composition after influenza infection, including increased Enterobacteriaceae and decreased Lactobacillaceae. Conversely, antibiotic treatment reduced microbial diversity, notably affecting Firmicutes, Proteobacteria, and Bacteroidetes. Metabolomics showed altered amino acid metabolism pathways due to influenza infection and antibiotics. Abnormal expression of indoleamine 2,3-dioxygenase 1 (IDO1) in the colon disrupted the balance between helper T17 cells (Th17) and regulatory T cells (Treg cells) in the intestine. Mice infected with the influenza virus and supplemented with tryptophan and Lactobacillus showed reduced lung and intestinal damage, decreased Enterobacteriaceae levels in the intestine, and decreased IDO1 activity. Discussion: Overall, influenza infection caused damage to lung and intestinal tissues, disrupted intestinal microbiota and metabolites, and affected Th17/Treg balance. Antibiotic treatment exacerbated these effects. Supplementation with tryptophan and Lactobacillus improved lung and intestinal health, highlighting a new understanding of the lung-intestine connection in influenza-induced intestinal disease. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Synergistic impact of plasma albumin and cognitive function on all-cause mortality in Chinese older adults: a prospective cohort study.
- Author
-
Zhi-qiang Li, Xin-xin Liu, Xue-feng Wang, Chen Shen, Feng Cao, Xin-miao Guan, Ying Zhang, and Jian-ping Liu
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.