检索结果-南通市图书馆

Insights into photocatalytic mechanism over a novel Cu_(2)WS_(4)/MoS_(2) S-scheme heterojunction

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第7期43卷 3118-3133页

作者： Wei Zhao Ji-Hui Cao jun-Jie Liao Yun Liu xiao-jun zeng jun-Yu Shen Xue-Kun Hong Yang Guo He-Hua zeng Ya-Zi Liu School of Materials Engineering Jiangsu Key Laboratory of Advanced Functional MaterialsSchool of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu215500China School of Chemistry and Chemical Engineering Changji UniversityChangji 831100China State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Ministry of Ecology and EnvironmentNanjing Institute of Environmental SciencesNanjing 210023China School of Environment Jiangsu Engineering Lab of Water and Soil Eco-RemediationNanjing Normal UniversityNanjing 210023China Department of Chemical Engineering Curtin UniversityPerthWA6845Australia

A novel efficient Cu_(2)WS_(4)/MoS_(2) step-scheme(S-scheme)heterojunction photocatalyst was constructed for the first time and applied in the removal of environmental *** the as-prepared photocatalysts,the Cu_(2)WS_(4)/MoS_(2)-8%heterojunc tion photoc atalyst demonstrates the optimal photocatalytic performance,with the catalytic oxidation efficiency of tetracycline(TC)and the catalytic reduction efficiency of Cr^(6+)reaching 93.3%and 82.1%,*** excellent catalytic properties of Cu_(2)WS_(4)/MoS_(2) heterojunction photocatalysts are attributed to the effective separation pathways of charges and the presence of S-scheme heterojunctions,together with stronger redox *** is speculated that the photogenerated carrier migration path of the Cu_(2)WS_(4)/MoS_(2) catalyst follows the typical S-scheme photocatalytic mechanism,which is verified by the in-depth experimental study and simulated calculations including the electron paramagnetic resonance(EPR)analysis,free radical quenching experiments,charge density distribution,and simulated built-in electric field formation at the interface,which acts as driving force to promote the separation of photoinduced electrons and ***,the photocatalytic mechanism of S-scheme photogenerated carrier migration for the Cu_(2)WS_(4)/MoS_(2) catalyst is revealed based on the systematic experimental techniques and simulated calculations,accounting for its superior photocatalytic oxidation and reduction *** study provides inspiring implications to develop high-efficient S-scheme photocatalytic systems for versatile applications in solarenergy conversion.

关键词： Cu_(2)WS_(4)/MoS_(2) S-scheme Heterojunction Photocatalysis

Dual template-induced construction of three-dimensional porous SiO_(2)/NC/Co-CNTs heterostructure with highly dispersed active sites for efficient oxygen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Tungsten 2024年第3期6卷 585-595页

作者： Hai-Qi Zhang xiao-jun zeng Qing-Qing Zhang Zu-Liang Zhang Chu-Long Jin Rong-Hai Yu School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

The development and exploration of efficient and economical electrocatalysts for oxygen evolution reaction(OER)represents the main bottleneck to unlocking a sustainable energy scenario based on elec trocataly tic water *** scale integration of three-dimensional(3D)porous heterostructure with highly dispersed active sites and good structural stability is ***,a dual template route is developed to construct the 3D porous SiO_(2)/nitrogen-doped carbon(NC)/Co-carbon nano tubes(CNTs)hetero ***,the hard template(SiO_(2) nano spheres)contributes to 3D porous structure,increases the specific surface area,and promotes the contact area of the *** the same time,the soft template(basic zinc carbonate)can control the growth of 1D CNTs and facilitate the exposure of the active ***,3D porous SiO_(2)/NC/Co-CNTs hetero structure inherits highly dispersed Co nanoparticles coated by *** conductive channels and abundant N hetero atoms doping are reasonably constructed by a dual template ***,SiO_(2)/NC/Co-CNTs catalyst provides an extraordinary activity for the OER in alkaline media,with a low overpotential of 298 mV at a current density of 10 mA·cm^(-2).Furthermore,SiO_(2)/NC/Co-CNTs hetero structure enables excellent long-term durability with a 10 mV decay in overpotential after 3000 cyclic voltammetry cycles,and 97%remain in current density over 20 *** is believed that this dual template strategy can provide a new and simple way to construct a highly dispersed active site in electrocatalysts.

关键词： Dual template High dispersion Porous heterostructure Conductive channels Oxygen evolution reaction

Evaluation and Comparison of Different Machine Learning Methods to Predict Outcome of Tuberculosis Treatment Course

在线全文

学校读者我要写书评

暂无评论

Journal of Intelligent Learning Systems and Applications 2013年第3期5卷 184-193页

作者： Sharareh R. Niakan Kalhori xiao-jun zeng Department of Machine Learning & Optimization School of Computer Science University of Manchester Manchester England. Department of Public Health School of Health Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran Social Determi- nants of Health Research Center School of Health Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran

Tuberculosis treatment course completion is crucial to protect patients against prolonged infectiousness, relapse, lengthened and more expensive therapy due to multidrug resistance TB. Up to 50% of all patients do not complete treatment course. To solve this problem, TB treatment with patient supervision and support as an element of the “global plan to stop TB” was considered by the World Health Organization. The plan may require a model to predict the outcome of DOTS therapy;then, this tool may be used to determine how intensive the level of providing services and supports should be. This work applied and compared machine learning techniques initially to predict the outcome of TB therapy. After feature analysis, models by six algorithms including decision tree (DT), artificial neural network (ANN), logistic regression (LR), radial basis function (RBF), Bayesian networks (BN), and support vector machine (SVM) developed and validated. Data of training (N = 4515) and testing (N = 1935) sets were applied and models evaluated by prediction accuracy, F-measure and recall. Seventeen significantly correlated features were identified (P CI = 0.001 - 0.007);DT (C 4.5) was found to be the best algorithm with %74.21 prediction accuracy in comparing with ANN, BN, LR, RBF, and SVM with 62.06%, 57.88%, 57.31%, 53.74%, and 51.36% respectively. Data and distribution may create the opportunity for DT out performance. The predicted class for each TB case might be useful for improving the quality of care through making patients’ supervision and support more case—sensitive in order to enhance the quality of DOTS therapy.

关键词： Tuberculosis Machine Learning Prediction Classification DOTS

Improvement the Accuracy of Six Applied Classification Algorithms through Integrated Supervised and Unsupervised Learning Approach

维普期刊数据库评论

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 Computer and Communications 2014年第4期2卷 201-209页

作者： Sharareh R. Niakan Kalhori xiao-jun zeng 1Department of Public Health School of Health Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran 2Social Determinants of Health Research Center School of Health Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran Department of Machine Learning and Optimization School of Computer Science The University of Manchester Manchester UK

We have presented an integrated approach based on supervised and unsupervised learning tech- nique to improve the accuracy of six predictive models. They are developed to predict outcome of tuberculosis treatment course and their accuracy needs to be improved as they are not precise as much as necessary. The integrated supervised and unsupervised learning method (ISULM) has been proposed as a new way to improve model accuracy. The dataset of 6450 Iranian TB patients under DOTS therapy was applied to initially select the significant predictors and then develop six predictive models using decision tree, Bayesian network, logistic regression, multilayer perceptron, radial basis function, and support vector machine algorithms. Developed models have integrated with k-mean clustering analysis to calculate more accurate predicted outcome of tuberculosis treatment course. Obtained results, then, have been evaluated to compare prediction accuracy before and after ISULM application. Recall, Precision, F-measure, and ROC area are other criteria used to assess the models validity as well as change percentage to show how different are models before and after ISULM. ISULM led to improve the prediction accuracy for all applied classifiers ranging between 4% and 10%. The most and least improvement for prediction accuracy were shown by logistic regression and support vector machine respectively. Pre-learning by k- mean clustering to relocate the objects and put similar cases in the same group can improve the classification accuracy in the process of integrating supervised and unsupervised learning.

关键词： ISULM Integration Supervised and Unsupervised Learning Classification Accuracy Tuberculosis

Induced pluripotent stem cell-related approaches to generate dopaminergic neurons for Parkinson's disease

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第11期20卷 3193-3206页

作者： Ling-xiao Yi Hui Ren Woon Genevieve Saw Li zeng Eng King Tan Zhi Dong Zhou National Neuroscience Institute Singapore Nanyang Technology University Singapore Department of Neurology Singapore General HospitalSingapore Signature Research Program in Neuroscience and Behavioral Disorders Duke-NUS Medical SchoolSingapore

The progressive loss of dopaminergic neurons in affected patient brains is one of the pathological features of Parkinson's disease,the second most common human neurodegenerative *** the detailed pathogenesis accounting for dopaminergic neuron degeneration in Parkinson's disease is still unclear,the advancement of stem cell approaches has shown promise for Parkinson's disease research and *** induced pluripotent stem cells have been commonly used to generate dopaminergic neurons,which has provided valuable insights to improve our understanding of Parkinson's disease pathogenesis and contributed to anti-Parkinson's disease *** current review discusses the practical approaches and potential applications of induced pluripotent stem cell techniques for generating and differentiating dopaminergic neurons from induced pluripotent stem *** benefits of induced pluripotent stem cell-based research are *** dopaminergic neuron differentiation protocols from induced pluripotent stem cells are *** emerging three-dimension-based brain organoid models compared with conventional two-dimensional cell culture are ***,limitations,challenges,and future directions of induced pluripotent stem cell–based approaches are analyzed and proposed,which will be significant to the future application of induced pluripotent stem cell-related techniques for Parkinson's disease.

关键词： dopaminergic neurons induced pluripotent stem cells Parkinson's disease stem cell approaches

Rhynchophylline suppression of potassium currents in smooth muscle cells of human mesenteric artery

在线全文

学校读者我要写书评

暂无评论

Rhynchophylline suppression of potassium currents in smooth ...

Rhynchophylline Vasodilation of Human Mesenteric Artery Involves L-type Calcium Channel Inhibition

中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： Peng-Yun LI,xiao-Rong zeng,jun CHENG,Zhi-Fei LIU,Miao-Ling LI,Yan YANG~* Department of Electrophysiology,Institute of Cardiovasology,Luzhou Medical College,Luzhou,646000,China

Aim:Rhynchophylline(Rhy) is the major tetracyclic oxindole alkaloid isolated from Uncaria species, and as the important active component in the Gambirplant(Gouteng) which modulates many physiological functions including cardiovascular ***,the mechanism of Rhy’s actions is *** we report some novel findings about the action of Rhy on smooth muscle cells(SMCs) freshly isolated from human mesenteric ***:The tension changes of mesenteric artery were recorded by Chart5.0 software via Powerlab *** freshly isolated smooth muscle cells were used to record K currents by a whole-cell, amphotericin-perforated configuration of patch-clamp ***:*** BK macroscopic currents and spontaneous transient outward currents(STOCs,transient BK currents) in human mesenteric artery SMCs were voltage-dependent and extracellular *** superimposed stochastically onto macroscopic BK currents,and both of them were significantly inhibited by iberiotoxin(IbTX,200 nmol/L),a specific BK ***(4 mmol/L) activated ryanodine receptor(RyR) to produce a remarkable enhancement in both forms of BK *** inhibitor ryanodine(10μmol/L) significantly inhibited BK macroscopic currents, while abolished STOCs in human mesenteric artery ***(20-100μmol/L) significantly suppressed the two forms of BK currents in a dose-dependent manner(n=6),and the IC50(fitted by Boltzmann function) was(39.06±0.27)μmol/*** the concentration of 60μmol/L(the most potent concentration),Rhy significantly decreased STOCs amplitude by 39.16%±9.10%,area by 54.2%±10.21%,half-width by 40.40%±9.43%and frequency by 66.08%±7.01%,respectively(n=6),while it had little effect on STOCs *** macroscopic currents were also remarkably suppressed by 32.80%±9.34%at the membrane potential of +20 mV(n=7).RyR activator caffeine(4 mmol/L) failed to reactivate both forms of BK currents after Rhy treatment(n=4).*** addition,Rhy re

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Rhynchophylline Vasodilation of Human Mesenteric Artery Invo...

第八届海峡两岸心血管科学研讨会

作者： Peng-yun Li,xiao-rong zeng,jun Cheng,xiao-qiu Tan,Zhi-fei Liu, Jie Pei,Wen Zhou,Yan Yang~* (Key laboratory of medical Electrophysiology,Ministry of Education Department of Electrophysiology,Luzhou Medical College,Luzhou 646000 China)

Aims Uncaria species(Gouteng in Chinese) have been used as ethnopharmacological medicines to treat ailments of the cardiovascular and central nervous *** the main alkaloid constituent of Uncaria species,rhynchophylline(Rhy) exhibits a similar pharmacological activity when compared with Gouteng and has drawn extensive attention in recent years for its antihypertensive and neuroprotective *** cardiovascular effect of Rhy has been suggested to be partly due to Ca channel ***,very little is known about the actions of Rhy on peripheral resistance vessels and whether L - type voltage - gated Ca current (I) inhibition were involved in Rhy - induced *** therefore studied the actions of Rhy on endothelium - denuded human mesenteric artery and its effect on the I in human mesenteric artery smooth muscle cells(HMASMCs).Methods Tension measurement was carried out in endothelium -denuded second - order and third - order human mesenteric arterial rings by use of chart 6.0 software via Powerlab Electrophysiolograph, the effect of Rhy on the precontracted artery was *** smooth muscle cells were enzymatically isolated from the same *** effect of Rhy were examined on Ba(10mM) currents through L - type Ca channels by use of the whole - cell perforated patch clamp ***(1) Different concentrations(1 -100μM) of Rhy relaxed(92.16±3.51%) human mesenteric artery rings precontracted with KCl(60 mM) in a dose -dependent manner,the IC50 of Rhy obtained from KCl contracted arteries was(38.26±1.12)μM(n = 8,P0.05 ).Different potassium chan

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

生物炭施用对节水灌溉稻田甲烷排放的影响

节水灌溉 2017年第10期 52-55,60页

作者：肖亚楠杨士红刘晓静徐俊增河海大学水利水电学院南京2100981 河海大学水文水资源与水利工程科学国家重点实验室南京210098

为了揭示生物炭施用对节水灌溉稻田甲烷排放的影响,基于田间试验,阐明了不同生物炭施用量条件下节水灌溉稻田甲烷排放通量及排放量变化规律,分析了生物炭施用对节水灌溉水稻产量及灌溉水分生产率的影响。结果表明,节水灌溉稻田CH_4排放... 详细信息

为了揭示生物炭施用对节水灌溉稻田甲烷排放的影响,基于田间试验,阐明了不同生物炭施用量条件下节水灌溉稻田甲烷排放通量及排放量变化规律,分析了生物炭施用对节水灌溉水稻产量及灌溉水分生产率的影响。结果表明,节水灌溉稻田CH_4排放集中在水稻生育前期(移栽后40 d之前),后期维持在较低水平。移栽后20 d之前,施用生物炭增加了节水灌溉稻田CH_4排放通量,之后降低了稻田CH_4排放通量。中量(20 t/hm2)与高量(40 t/hm2)生物炭施用量均减少了节水灌溉稻田稻季CH_4排放量,降低率分别为29.8%与6.3%。与此同时,生物炭施用后节水灌溉水稻产量增加9.3%~15.9%,灌溉水分生产率提高15.1%~15.9%。节水灌溉稻田施用生物炭在减少CH_4排放同时,能够实现节水增产。

关键词：节水灌溉生物炭甲烷排放稻田

From blocker to booster:Harnessing garnet surface chemistry for advanced solid-state electrolytes

在线全文

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 323-331页

作者： jun Cheng Xuan Zhou Hongqiang Zhang Zhen zeng Yuanyuan Li Yulong Zhu Yingsheng Liao Lijie Ci Deping Li State Key Laboratory of Precision Welding and Joining of Materials and Structures School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China

Garnet electrolytes with high ionic conductivity and electrochemical stability are widely used as fillers to fabricate composite solid electrolytes(CPEs)within polymer ***,the performance of CPEs is significantly influenced by the surface characteristics of the garnet ***,the impact of garnet surface characteristics on CPEs was systematically investigated and a conversion from a typically unstable and Lewis basic surface to a more stable Lewis acidic surface was realized,which is shown to be more conductive to the improved performance of *** simultaneously removing the Li_(2)CO_(3)layer and applying a Li-Al-O coating,the influence of surface characteristics on CPEs was *** Lewis acid Li-Al-O surface coating not only promotes lithium salt dissociation,improving the ionic conductivity and ionic transfer number,but also prevents the reformation of the passive Lewis basic Li_(2)CO_(3)*** to garnet with a Lewis basic Li_(2)CO_(3)surface,the garnet modified with a Lewis acid Li-Al-O coating enhances CPEs,which exhibit an improved critical current density of 1.0 mA·cm^(-2)and highly stable lithium symmetric cell cycling for 400 h at 0.2 mA·cm^(-2).This research highlights the importance of surface chemistry in the design of high-performance solid-state batteries and presents a strategic modification approach for garnetbased CPEs.

关键词： garnet electrolyte composite solid electrolyte surface chemistry all-solid-state batteries