检索结果-南通市图书馆

Multidrug resistance protein 3 R652G may reduce susceptibility to idiopathic infant cholestasis

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 Gastroenterology 2009年第46期15卷 5855-5858页

作者： xiu-Qi chen lin-lin wang Qing-Wen Shan Qing Tang Shu-Jun Lian Department of Pediatrics First Affiliated HospitalGuangxi Medical University Nanning 530021 Guangxi ZhuangAutonomous Region China

AIM:To evaluate the role of genetic factors in the pathogenesis of idiopathic infant ***:We performed a case-control study,in-cluding 78 infants with idiopathic infant cholestasis and 113 healthy infants as *** DNA was extracted from peripheral venous blood leukocytes us-ing phenol chloroform *** chain reaction was used to amplify the multidrug resistance protein 3(MDR3)R652G fragment,and products were sequenced using the ABI 3100 ***:The R652G single nucleotide polymorphism(SNP)was significantly more frequent in healthy infants(allele frequency 8.0%)than in patients(allele frequency 2.60%)(P < 0.05),odds ratio,0.29;95% confidence interval,*** conjugated bilirubin in patients with the AG genotype was significantly lower than in those with the AA genotype(44.70 ± 6.15 μmol/L vs 95.52 ± 5.93 μmol/L,P < 0.05).CONCLUSION:MDR3 R652G is negatively correlated with idiopathic infant *** with the R652G SNP in Guangxi of China may have reduced susceptibility to infant intrahepatic cholestasis.

关键词： Multidrug resistance protein 3 Singlenucleotide polymorphisms R652G Infant Cholestasis

Electron-electron interactions in monolayer graphene quantum capacitors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2013年第8期6卷 619-626页

作者： Xiaolong chen lin wang Wei Li Yang wang Zefei Wu Mingwei Zhang Yu Han Yuheng He Ning wang Department of Physics and the William Mong Institute of Nano Science and Technology Hong Kong University of Science andTechnology Hong Kong S.A.R. China

We demonstrate the effects of electron-electron （e-e） interactions in monolayer graphene quantum capacitors. Ultrathin yttrium oxide showed excellent per-formance as the dielectric layer in top-gate device geometry. The structure and dielectric constant of the yttrium oxide layers have been carefully studied. The inverse compressibility retrieved from the quantum capacitance agreed fairly well with the theoretical predictions for the e--e interactions in monolayer graphene at different temperatures. We found that electron-hole puddles played a significant role in the low-density carrier region in graphene. By considering the temperature-dependent charge fluctuation, we established a model to explain the round-off effect originating from the e-e interactions in monolayer graphene near the Dirac point.

关键词： graphene e-e interaction inverse compressibility quantum capacitance charge fluctuation electron-hole puddles

Analysis of properties of krypton ion-implanted Zn-polar ZnO thin films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第9期30卷 528-533页

作者： Qing-Fen Jiang Jie Lian Min-Ju Ying Ming-Yang Wei chen-lin wang Yu Zhang School of Information Science and Engineering Shandong Provincial Key Laboratory of Laser Technology and ApplicationShandong UniversityJinan 250100China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China

The optical properties of materials are of great significance for their device *** numbers of krypton ions are doped into high-quality Zn-polar ZnO films fabricated by molecular beam epitaxy(MBE)on sapphire substrates through ion *** is chemically *** structures,morphologies,and optical properties of films are *** x-ray diffraction(XRD)spectra confirm the wurtzite structures of Zn-polar ZnO *** force microscopy(AFM)results show that the films have pit surface structure and higher roughness after Kr ion implantation.A detailed investigation of the optical properties is performed by using the absorption spectrum,photoluminescence(PL),and spectroscopic ellipsometry(SE).The absorption spectrum is measured by UV-visible spectrophotometer and the bandgap energy is estimated by the Tauc *** results show that the absorption increases and the bandgap decreases after Kr ion ***,the Kr ion implantation concentration also affects the properties of the *** ellipsometry results show that the films'refractive index decreases with the Kr ion implantation concentration *** results can conduce to the design and optimization of Kr ion-implanted polar ZnO films for optoelectronic applications.

关键词： polar ZnO film molecular beam epitaxy Kr implantation optical properties bandgap

Effect of continuous positive airway pressure ventilation on nocturnal ST-segment changes in patients with sleep-disordered breathing

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2007年第2期4卷 101-104页

作者： Wenli Zhang Shiwen wang Rui chen Mohan Liu lin wang Lei Gao Caiyi Lu Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China

Objective To determine whether sleep-disordered breathing (SDB) may lead to nocturnal myocardial ischemia and whether the severity of this ischemia may be relieved by nasal continuous positive airway pressure (CPAP). Methods Overnight polysomnogram examination and simultaneous 3-channel Holter monitoring were performed on 76 patients with moderate to severe SDB and no history of coronary heart disease. All the cases were treated with CPAP for one night. ST depression was defined as a ST segment decrease of more than 1 mm from baseline and lasting 1 min or more. The total duration (minutes) of ST depression was indexed to the total sleep time (minutes per hour of sleep). Results Twenty-eight patients (37%) showed ST segment depression during their sleep. Before CPAP treatment, the respiratory disturbance index (RDI) and arousal index were significantly higher during periods of ST depression than when ST segments were isoelectric, whereas no significant difference was found in blood oxygen saturation (SaO2). After the CPAP treatment of patients with ST depression, the duration of ST depression was significantly reduced from 36.8±18.9 to 11.4±13.2 min/h (P<0.05). ST depression-related indexes, including RDI, arousal index and the percentage of sleep time spent at SaO2 below 90% (TS90/ TST), were all significantly decreased, with RDI from 63.4±23.8 to 8.1±6.6 /h, arousal index from 51.2±18.9 to 9.6±5.4 /h, and TS90/ TST from 50.6±21.4 to 12.9±14.7% (P<0.05). Conclusion ST-segment depression is rather common in patients with moderate to severe SDB, and CPAP treatment can significantly reduce the duration of ST depression. ST depression in these patients may reflect the myocardial ischemia that really exists and the non-ischemic changes associated with recurrent SDB.

关键词： ST-segment depression myocardial ischemia sleep-disordered breathing continuous positive airway pressure

Research on financial support of the new energy industry

在线全文

学校读者我要写书评

暂无评论

International English Education Research 2014年第12期 23-25页

作者： chen lin Wu jingjing wang rong shanghai university of engineering science shanghai china

As it is known to all, the new energy industry plays an important in the economic transformation and structure adjustment of our country. The government attaches great importance to the development of the new energy industry. Particularly for the developing countries, to achieve rapid development require a lot of capital. However, there are some problems with finance in the development of the new energy industry. Based on the analysis, this paper puts forward some countermeasures.

关键词： financial support new energy industry venture capital finn.

Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow‑Electrode Capacitive Deionization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 1-17页

作者： Ziquan wang Xiangfeng chen Yuan Zhang Jie Ma Zhiqun lin Amor Abdelkader Maria‑Magdalena Titirici Libo Deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai 200092People’s Republic of China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Department of Engineering Faculty of Science and TechnologyBournemouth UniversityTalbot CampusFern BarrowPooleEngland BH125BBUK Institut de Chimie de Nice UniversitéCôte d’AzurUMR CNRS 727228 Av.Valrose06108 NiceFrance Department of Chemical Engineering Imperial College LondonSouth Kensington CampusExhibition RdLondon SW72AZUK

Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of ***,it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes,both restricted by the current ***,a new tip-array current collector(designated as T-CC)was developed to replace the conventional planar current collectors,which intensifies both the charge transfer and ion transport *** effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy,which revealed the reduction of ion transport barrier,charge transport barrier and internal *** the voltage increased from 1.0 to 1.5 and 2.0 V,the T-CC-based FCDI system(T-FCDI)exhibited average salt removal rates(ASRR)of 0.18,0.50,and 0.89μmol cm^(-2) min^(-1),respectively,which are 1.82,2.65,and 2.48 folds higher than that of the conventional serpentine current collectors,and 1.48,1.67,and 1.49 folds higher than that of the planar current ***,with the solid content in flow electrodes increased from 1 to 5 wt%,the ASRR for T-FCDI increased from 0.29 to 0.50μmol cm^(-2) min^(-1),which are 1.70 and 1.67 folds higher than that of the planar current ***,a salt removal efficiency of 99.89%was achieved with T-FCDI and the charge efficiency remained above 95%after 24 h of operation,thus showing its superior long-term stability.

关键词： Flow-electrode Capacitive deionization Current collector Tip effect Desalination

A Comparative Study of Older People with Disability in Two World Cities： The Pursuit of an Inclusive Community

在线全文

学校读者我要写书评

暂无评论

Fudan Journal of the Humanities and Social Sciences 2011年第3期4卷 38-58页

作者： chen Hong-lin wang Xing-ling Wong Yu-cheung

This study aims to understand the life circumstances and social exclusion experienced by disabled older adults in urban Shanghai and Hong Kong. It also explores the relationship between social exclusion and quality of life. The researcher collected questionnaire data in one Shanghai and one comparable Hong Kong community. The survey included 460 older adults from a community in Shanghai and 250 older adults from a community in Hong Kong. The Shanghai sampling was stratified while the Hong Kong samphng was multi-step random sampling. Both processes are representative. Functional capacity and disability had a significant relationship with the quality of life of older adults. This implies that the social environment is not inclusive for disabled older adults in many ways. Neighborhood exclusion stood out as the most significant form of social exclusion. Although disability is more and more commonly understood as an element of human diversity, the disabled are still not fully functional in society. There are still many environmental barriers and social conditions that need to be improved to achieve community inclusion. Suggestions for how to achieve an inclusive society for all and especially for the disabled elderly are discussed.

关键词： older people disability social exclusion quality of life

RF Optimizer Model for Predicting Compressive Strength of Recycled Concrete

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 215-223页

作者： LIU lin wang Liuyan wang Hui SUN Huayue School of Civil Engineering and Architecture Shenyang UniversityShenyang 110000China

Traditional machine learning(ML)encounters the challenge of parameter adjustment when predicting the compressive strength of reclaimed *** address this issue,we introduce two optimized hybrid models:the Bayesian optimization model(B-RF)and the optimal model(Stacking model).These models are applied to a data set comprising 438 observations with five input variables,with the aim of predicting the compressive strength of reclaimed ***,we evaluate the performance of the optimized models in comparison to traditional machine learning models,such as support vector regression(SVR),decision tree(DT),and random forest(RF).The results reveal that the Stacking model exhibits superior predictive performance,with evaluation indices including R2=0.825,MAE=2.818 and MSE=14.265,surpassing the traditional ***,we also performed a characteristic importance analysis on the input variables,and we concluded that cement had the greatest influence on the compressive strength of reclaimed concrete,followed by ***,the Stacking model can be recommended as a compressive strength prediction tool to partially replace laboratory compressive strength testing,resulting in time and cost savings.

关键词： machine learning recycled concrete compressive strength

The Multi-Agent Modeling and Calculated Analysis of Shop Logistics Scheduling in the Manufacturing Enterprises

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

武汉理工大学学报 2006年第S1期28卷 376-380页

作者： chen Yong,lin Feilong,wang Xiao,TANG Kefeng (College of Mechanical & Electrical Engineering,Zhejiang University of Technology,Hangzhou 310032,China) College of Mechanical & Electrical Engineering Zhejiang University of TechnologyHangzhou 310032China

In this paper,the multi-agent model about shop logistics is set up. This model has 8 agents: raw materials stock agent,process agent,testing agent,transition agent,production information agent,scheduling agent,process agent and stock agent. The scheduling agent has three subagents: manager agent (MA),resource agent (RA) and part agent (PA). MA,PA and RA are communicating equally that guarantees agility of the whole MAS system. The part tasks pass between MA,RA and PA as an integer,which can guarantee the consistency of the data. We use a detailed example about shop logistics scheduling in a semiconductor company to explain the principle. In this example,we use two scheduling strategies: FCFS and SPT. The result data indicates that the average flow time and lingering ratio are changed using different strategy. It is proves that the multi-agent scheduling is useful.

关键词： modeling multi-agent scheduling shop logistics