检索结果-南通市图书馆

Low-viscosity oligoether esters(OEEs)as high-efficiency lubricating oils:Insight on their structure‒lubricity relationship

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第6期12卷 1133-1153页

作者： Hanwen WANG Ying WANG ping wen Lin MA Mingjin FAN Rui DONG Chunhua ZHANG Shaanxi Key Laboratory of Phytochemistry College of Chemistry&Chemical EngineeringBaoji University of Arts and SciencesBaoji 721013China Key Laboratory of Shaanxi Province for Development and Application of New Transportation Energy Chang’an UniversityXi’an 710064China

Development of energy-efficient lubricants is a way to reduce energy consumption for transportation,with the tendency to design molecules that are beneficial in reducing the viscosity of synthetic *** esters(OEEs),as a low-viscosity ester base oil,have characteristics such as simple synthesis and excellent lubrication effect;however,the application of OEEs in tribology field has rarely been *** objective of the present study is to investigate the effect of structure on the lubricating performance of OEEs and to develop a predictive model for OEEs based on quantitative structure‒property relationship(QSPR)through a combination of experiment and statistical *** showed that glycol chains contribute positively to lubrication with the ether functional groups increasing the sites of *** to branched-chain OEEs,straight-chain OEEs exhibited reduced wear,which was mainly due to the thicker adsorption film formed by the straight-chain ***,carbon films were detected on lightly worn surfaces,indicating that OEEs underwent oxidation during the friction *** on the results of principal component analysis(PCA)and partial least squares(PLS),it could be found that the predictive models of viscosity‒temperature performance,thermal stability performance,coefficient of friction(COF),and wear volume(WV)performed well and *** them,COF and WV can be best predicted with an R^(2) of about 0.90.

关键词： oligoether esters(OEEs) low-viscosity ester friction wear quantitative structure-property relationship(QSPR)

Botulinum toxin type A in treating early-stage patients with small-angle acute acquired comitant esotropia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2024年第6期17卷 1094-1101页

作者： Run-Ting Ma Die-wen-Jie Hu Lian-Hong Zhou wen-ping Li Yuan-Jin Li Bei-Xi Yi Department of Ophthalmology Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

AIM:To investigate botulinum toxin A(BTXA)efficacy on small-angle(≤25Δ)acute acquired concomitant esotropia(AACE)in early-stage ***:The electronic medical record data of AACE patients during March 2019 and June 2023 were collected in this retrospective and hospital-based cohort study.A total of 72 small-angle AACE patients received BTXA extraocular muscle *** were grouped by onset-to-treatment time(Group A:≤6mo,Group B:>6mo).Deviation of esotropia,eye alignment and stereopsis were analyzed at the period of pre/post-injection(1wk,1,3,and 6mo).Orthophoria rate at 6mo(horizontal deviation0.05)between two groups except onset-to-treatment time(2mo vs 11mo,P0.05);while in 3 and 6mo Group A was significantly smaller than group B(all P6mo)may reduce BTXA *** BTXA intervention benefits long-term eye alignment and stereopsis recovery.

关键词： acute acquired comitant esotropia botulinum toxin type A stereopsis

Single Ti atoms coupled with Ti-O clusters enable low temperature hydrogen cycling by sodium alanate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第6期43卷 2671-2681页

作者： Zhuang-He Ren Xin Zhang wen-Xuan Zhang Zhen-Guo Huang Li-Mei Yang Ya-Xiong Yang Zheng-Long Li Juan Li wen-ping Sun Ming-Xia Gao Hong-Ge Pan Yong-Feng Liu State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310058China School of Civil&Environmental Engineering.University of Technology Sydney Sydney2007 NSWAustralia Institute of Science and Technology for New Energy Xi'an Technological UniversityXi'an 710021China College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014China

Ti-based catalysts are known to improve the hydrogen storage performance of NaAlH4by facilitating the dissociation/recombination of H-H and Al-H *** catalytic activity of metallic Ti species strongly depends on its particle size and *** clusters and even single atoms are therefore highly desirable,but their controllable fabrication has been highly *** rein,we demonstrate a novel facile sonochemical synthesis of a Ti-O clusters featuring single Ti atom catalyst at room *** reducing TiCl_(4)by MgBu_(2)with ultrasound instead of heating as driving force,numerous single Ti atoms coupled with Ti-O clusters with Ti loading on graphene(Ti_(1)/Ti-O@G)up to 22.6 wt%have been successfully *** prepared Ti_(1)/Ti-O@G contributes high reactivity and superior catalytic activity,therefore enabling full dehydrogenation of NaAlH_(4)at 80℃in thermogravimetric mode and re-hydrogenation at 30℃and 10 MPa with 4.9 wt% H_(2).This fact indicates for the first time that single Ti atom catalyst with high loading is highly effective in catalyzing hydrogen cycling of NaAlH4at remarkably reduced temperatures.

关键词： Hydrogen storage Nanocatalysis Transition metals Single Ti atoms NaAlH_(4)

Correlation between abdominal computed tomography signs and postoperative prognosis for patients with colorectal cancer

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第7期16卷 2145-2156页

作者： Shao-Min Yang Jie-Mei Liu Rui-ping wen Yu-Dong Qian Jing-Bo He Jing-Song Sun Department of Radiology Xingtan Hospital Affiliated to Shunde Hospital of Southern Medical UniversityFoshan 528315Guangdong ProvinceChina Department of Rehabilitation Medicine Shunde HospitalSouthern Medical UniversityFoshan 528399Guangdong ProvinceChina Department of Radiology Lecong Hospital of ShundeFoshan 528315Guangdong ProvinceChina Department of Ultrasound Lecong Hospital of ShundeFoshan 528315Guangdong ProvinceChina

BACKGROUND Patients with different stages of colorectal cancer(CRC)exhibit different abdominal computed tomography(CT)***,the influence of CT signs on CRC prognosis must be *** To observe abdominal CT signs in patients with CRC and analyze the correlation between the CT signs and postoperative *** The clinical history and CT imaging results of 88 patients with CRC who underwent radical surgery at Xingtan Hospital Affiliated to Shunde Hospital of Southern Medical University were retrospectively *** and multivariate Cox regression analyses were used to explore the independent risk factors for postoperative death in patients with *** three-year survival rate was analyzed using the Kaplan-Meier curve,and the correlation between postoperative survival time and abdominal CT signs in patients with CRC was analyzed using Spearman correlation *** For patients with CRC,the three-year survival rate was 73.86%.The death group exhibited more severe characteristics than the survival group.A multivariate Cox regression model analysis showed that body mass index(BMI),degree of periintestinal infiltration,tumor size,and lymph node CT value were independent factors influencing postoperative death(P<0.05 for all).Patients with characteristics typical to the death group had a low three-year survival rate(log-rankχ2=66.487,11.346,12.500,and 27.672,respectively,P<0.05 for all).The survival time of CRC patients was negatively correlated with BMI,degree of periintestinal infiltration,tumor size,lymph node CT value,mean tumor long-axis diameter,and mean tumor short-axis diameter(r=-0.559,0.679,-0.430,-0.585,-0.425,and-0.385,respectively,P<0.05 for all).BMI was positively correlated with the degree of periintestinal invasion,lymph node CT value,and mean tumor short-axis diameter(r=0.303,0.431,and 0.437,respectively,P<0.05 for all).CONCLUSION The degree of periintestinal infiltration,tumor size,and lymph node CT value are c

关键词： Colorectal cancer Abdominal Computed tomography signs Radical surgery Prognosis Correlation

Screening of morphology-related genes based on predatorinduced transcriptome sequencing and the functional analysis of Dagcut gene in Daphnia galeata

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2024年第4期70卷 440-452页

作者： Ya-Qin Cao Ya-Jie Zhao Hui-Ying Qi Jin-Fei Huang Fu-Cheng Zhu wen-ping Wang Dao-Gui Deng School of Life Science Huaibei Normal UniversityHuaibei 235000AnhuiChina

High fish predation pressure can trigger"induced defense"in Daphnia species,resulting in phenotypic plasticity in morphology,behavior,or life-history *** molecular mechanisms of defense morphogenesis(e.g.,the tail spine and helmet)in Daphnia remain *** the pres-ent study,the tail spine,helmet,and body of Daphnia galeata under fish and non-fish kairomones conditions were collected for transcriptome analysis.A total of 24 candidate genes related to the morphological defense of *** were identified,including 2 trypsin,one cuticle protein,1 C1qDC protein,and 2 ferritin *** function of the Dagcut gene(*** cuticle protein gene)in relation to tail spine morphology was assessed using RNA interference(RNAi).Compared with the EGFP(Enhanced green fluorescent protein)treatment,after RNAi,the expression levels of the Dagcut gene(*** cuticle protein gene)showed a significant ***,the tail spines of the offspring pro-duced by *** after RNAi of the Dagcut gene appeared curved during the *** whole-mount in situ hybridization,a clear signal site was detected on the tail spine of *** before RNAi which disappeared after *** results suggest that the Dagcut gene may play an important role in tail spine formation of ***,and will provide a theoretical basis for studying the molecular mechanisms of the morpho-logical plasticityin cladocera inthefuture.

关键词： Dagcut Daphnia galeata fish kairomones RNAi tail spine transcriptome sequencing.

Predictive value of diaphragm ultrasound for mechanical ventilation outcome in patients with acute exacerbation of chronic obstructive pulmonary disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第26期12卷 5893-5900页

作者： Lei-Lei Qu wen-ping Zhao Ji-ping Li Wei Zhang The First Department of Respiratory and Critical Care Medical Center The First People's Hospital of Baiyin CityBaiyin 730900Gansu ProvinceChina Department of Nursing The First People's Hospital of Baiyin CityBaiyin 730900Gansu ProvinceChina

BACKGROUND Acute exacerbation of chronic obstructive pulmonary disease(AECOPD)is often combined with respiratory failure,which increases the patient's morbidity and *** ultrasound(DUS)has developed rapidly in the field of critical care in recent *** with DUS monitoring diaphragm-related rapid shallow breathing index have demonstrated important results in guiding intensive care unit patients out of the *** prediction of the indications for withdrawal of non-invasive ventilator and early evaluation of patients to avoid or reduce disease progression are very *** To explore the predictive value of DUS indexes for non-invasive ventilation outcome in patients with *** Ninety-four patients with AECOPD who received mechanical ventilation in our hospital from January 2022 to December 2023 were retrospectively analyzed,and they were divided into a successful ventilation group(68 cases)and a failed ventilation group(26 cases)according to the outcome of *** clinical data of patients with successful and failed noninvasive ventilation were compared,and the independent predictors of noninvasive ventilation outcomes in AECOPD patients were identified by multivariate logistic regression *** There were no significant differences in gender,age,body mass index,complications,systolic pressure,heart rate,mean arterial pressure,respiratory rate,oxygen saturation,partial pressure of oxygen,oxygenation index,or time of inspiration between patients with successful and failed mechanical ventilation(P>0.05).The patients with successful noninvasive ventilation had shorter hospital stays and lower partial pressure of carbon dioxide(PaCO_(2))than those with failed treatment,while potential of hydrogen(pH),diaphragm thickening fraction(DTF),diaphragm activity,and diaphragm movement time were significantly higher than those with failed treatment(P<0.05).pH[odds ratio(OR)=0.005,P<0.05],PaCO_(2)(OR=0.430,P<0.05),and

关键词： Diaphragm ultrasound Mechanical ventilation Acute exacerbation of chronic obstructive pulmonary disease Predictive value Diaphragm thickening fraction Diaphragm activity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于相关性的Swarm联邦降维方法

自动化学报 2024年第9期50卷 1866-1876页

作者：李文平杜选嘉兴学院信息科学与工程学院嘉兴314001

联邦学习(Federated learning,FL)在解决人工智能(Artificial intelligence,AI)面临的隐私泄露和数据孤岛问题方面具有显著优势.针对联邦学习的已有研究未考虑联邦数据之间的关联性和高维性问题,提出一种基于联邦数据相关性的去中心化... 详细信息

联邦学习(Federated learning,FL)在解决人工智能(Artificial intelligence,AI)面临的隐私泄露和数据孤岛问题方面具有显著优势.针对联邦学习的已有研究未考虑联邦数据之间的关联性和高维性问题,提出一种基于联邦数据相关性的去中心化联邦降维方法.该方法基于Swarm学习(Swarm learning,SL)思想,通过分离耦合特征,构建典型相关分析(Canonical correlation analysis,CCA)的Swarm联邦框架,以提取Swarm节点的低维关联特征.为保护协作参数的隐私安全,还构建一种随机扰乱策略来隐藏Swarm特征隐私.在真实数据集上的实验验证了所提方法的有效性.

关键词：隐私保护 Swarm学习联邦学习典型相关分析

Associations between residence and cognitive function among Chinese older adults: the mediating role of leisure activity

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Medical Data Mining 2024年第3期7卷 46-52页

作者： Xiao-Dong Leng wen-ping Zeng Mao-Rui Qian School of Public Health Chongqing Medical UniversityChongqing 401331China

Background:Cognitive function is a current research hotspot,residence may be related to differences in cognitive function,and the mediating role of leisure activities are limited in Chinese *** study used leisure activities as a mediating variable to investigate the mediating role of leisure activity between place of residence(city-town-rural)and cognitive function among Chinese older,this is where the innovation of the article comes ***:Using cross-sectional data from the 2018 Chinese Longitudinal Healthy Longevity Survey,Pearson correlation analyses were employed to examine the relationships among various *** analyses were conducted using the SPSS PROCESS macro program,version 3.5,written by Hayes,to explore the mediating effects of leisure activity between place of residence and cognitive function in older ***:A total of 10955 older adults were included in this study,with a mean age of(84.23±11.57)*** them,2739(24.8%)lived in the city,3627(33.1%)in town,and 4615(42.1%)in rural areas;their leisure activity score was(5.34±3.77),and their cognitive function score was(24.69±6.65).Place of residence,leisure activities,and cognitive function were significantly correlated(P<0.01).Using city as a reference,place of residence is negatively associated with cognitive function,and place of residence not only had a direct effect on cognitive function in older adults:town-cognitive function(effect=–0.399;95%confidence interval(CI)=(–0.685,–0.113));rural-cognitive function(effect=–0.42;95%CI=(–0.698,–0.141)).There were also indirect effects on cognitive function through the pathway of leisure activity:town-leisure activity-cognitive function(effect=–0.17;95%CI=(–0.246,–0.1)),rural-leisure activity-cognitive function(effect=–0.199;95%CI=(–0.272,–0.13)).Conclusion:Leisure activities play a partially mediating role between the impact of place of residence and cognitive function in Chinese older adults,and it is vital to pay atte

关键词： residence leisure activity cognitive function intermediary role older adults

Problems and Countermeasures to Improve Clinical Trial Participants’Compensation Rights in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Social Pharmacy 2024年第1期19卷 58-63页

作者： Yang Xiuqiao wen ping Lin Hong Chen wenhuan Chen Yuwen Department of Clinical Trail Management Shenzhen Maternity&Child Healthcare HospitalShenzhen 518028China School of Business Administration Shenyang Pharmaceutical UniversityShenyang 110016China Jincheng Tongda&Neal Shenzhen 518000China

Objective To discuss the problems existing in the compensation of Chinese clinical trial participants and propose some suggestions for improving their *** The literature related to the participants’right to compensation at home and abroad was searched to study the inadequacy of the compensation right for clinical trial participants in China from four aspects:insurance system,principle of attribution,legal relationship and compensation ***,some suggestions to improve the participants’right to compensation were *** and Conclusion China lacks clear legal norms for participants’right to *** are problems such as unclear insurance rules and compensation rules,unclear contractual relationships between parties to clinical trials,and no laws and regulations to rely on for attribution and *** should issue regulatory guidelines related to the right to compensation of participants in clinical trials,so that all parties in clinical trials can have rules to follow if there is the occurrence of injury,which can better protect the rights and interests of the participants.

关键词： clinical trial participant compensation right