检索结果-南通市图书馆

Recent Advances in Metal-Organic Cages-Based Composite Membranes

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 Journal of Structural Chemistry 2022年第11期41卷 100-109页

作者： Guoliang Liu Xiao-qin Liu Lin-bing Sun State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Material(SICAM)College of Chemical EngineeringNanjing Tech UniversityNanjing211816China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210023China

Conventional polymeric membranes face several limitations,such as the trade-off between permeability and selectivity,and physical aging or membrane *** this case,fabrication of composite membranes,usually including mixed matrix membranes(MMMs)or thin film nanocomposite(TFN)membranes by introduction of porous materials as fillers has gained much *** achieve excellent membrane performance,it is of great importance to select proper porous materials to avoid agglomeration or precipitation during the composite membrane fabrication ***-organic cages(MOCs)have been explored as additives for the fabrication of defectfree composite membranes owing to their diversified topologies,well-defined pore structures,nanoscale size,and excellent *** review mainly focuses on the recent advances in applications of MOCs for membrane separation,including synthetic artificial channels,reverse osmosis,nanofiltration,pervaporation and gas ***,two types of MOCs that have been extensively investigated for composite membrane fabrication are also ***,challenges and possible directions are also discussed in details,hoping to provide insightful guidance on the development of more MOC-based membranes with impressive separation performance.

关键词： membrane separation metal-organic cage mixed matrix membranes thin film nanocomposite membranes

Tolerance and safety evaluation of sodium sulfate:A subchronic study in laying hens

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2021年第2期7卷 576-586页

作者： bing Liu Jiaming Zhu qin Zhou Dongyou Yu College of Animal Sciences Zhejiang UniversityHangzhou310058China State Key Laboratory of Food Science and Technology and Synergetic Innovation Center of Food Safety and NutritionJiangnan UniversityWuxi214122China

Sodium sulfate(Na2SO4)is a readily available chlorine-free source of sodium,which could be used to reduce sodium chloride to maintain the ratio between chlorine and sodium in poultry *** supplementation with excessive levels of Na2SO4 might be detrimental to bird's health and per-formance.A subchronic study was carried out to investigate the potential adverse effects of an accidental oversupply of Na2SO4 in the diets of laying *** hundred and fifty 21-week-old Hy-Line White layers were randomly assigned to 5 treatments with 6 *** birds were fed diets supplemented with 0(control),0.3%,0.6%,1.5%,and 3.0%Na2SO4 for 8 *** perfor-mance,egg quality parameters,clinical blood parameters,histopathology,intestinal barrier func-tions,and intestinal microflora composition were *** clinical signs of intoxication or mortality were observed during the experimental *** results of this study showed that the optimal levels of Na2SO4(0.3%to 0.6%)significantly improved the laying rates,average daily egg mass,and eggshell quality of hens compared to the control(P<0.05).However,3.0%Na2SO4 produced negative effects on laying performance,eggshell quality,blood biochemistry,and partic-ularly on liver and kidney pathology,and intestinal morphology and barrier functions compared with the *** minor changes were observed in clinical blood parameters of hens receiving 1.5%Na2SO4,these were not considered to be of toxicological significance due to the absence of any organ pathological changes in *** conclusion,our results indicated that a Na2SO4 concentration of 1.5%was non-deleterious to laying hens after a daily administration for 56 d,namely that dietary supplementation of up to 5 times the maximum recommended dose is safely tolerated by laying hens.

关键词： Sodium sulfate Tolerance Histopathology Intestinal function Laying hen

MIL-53-based homochiral metal-organic framework as a stationary phase for open-tubular capillary electrochromatography

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2022年第3期12卷 509-516页

作者： Xiaodong Sun bing Niu Qi Zhang qin Chen School of Medicine Shanghai UniversityShanghai200444China School of Life Sciences Shanghai UniversityShanghai200444China School of Pharmacy Jiangsu UniversityZhenjiangJiangsu212013China

Homochiral metal-organic frameworks(MOFs)have attracted considerable attention in many fields of research,such as chiral catalysis and chiral ***,only few homochiral MOFs can be effectively used in capillary electrochromatography(CEC)and their performances are far from *** this study,we successfully synthesized achiral nanocrystalline MIL-53.A facile post-synthetic modification strategy was then implemented to functionalize the product,yielding a homochiral MOF:*** MOF was then employed as a chiral coating in open-tubular CEC mode(OT-CEC),and,as such,it exhibited high enantioselectivities for several racemic *** homochiral MOF and the fabricated capillary coating were systematically characterized using transmission electron microscopy,scanning electron microscopy(with energy-dispersive X-ray spectrometry),Fourier-transform infrared spectroscopy,X-ray diffractometry,thermogravimetric analysis,circular dichroism spectroscopy,Brunauer-Emmett-Teller surface area measurements,and X-ray photoelectron *** study is expected to provide a new strategy for the design and establishment of MOF-based chiral OT-CEC systems.

关键词： Homochiral MOF L-His-NH-MIL-53 Chiral stationary phase Capillary electrochromatography Enantioseparation

Regulation of solvation structure and the cooperation environment of potassium bonds for wider-temperature adaptive potassium storage

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4期43卷 1610-1621页

作者： bing-bing Liu Yi-Hui Liu You-Bin Zhang Zhen-Guo Qi Guo-Hui qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao266042China

Antimony selenide(Sb_(2)Se_(3))is one of the perspective candidates for potassium-ion batteries due to its advanced virtues stem including featured high capacity,fertile reserves and the relative narrow band *** the unique advantages,it is still plagued by the unstable interface compatibility and poor wider-temperature *** optimization of microstructure and the construction of inorganic-organic hybrids with a low desolvation barrier and rapid kinetics behaviors are efficient to address these *** Sb_(2)Se_(3)nanorods enclosed by the S-doped carbon layer(SC),further crosslinked by the poly(N-isopropylacrylamide)(PM)film(PM@Sb_(2)Se_(3)@SC),were artificially fabricated,and it displays the enrichment ion aggregated model as well as contacted ion pair state,the well-tailored cooperation environment of potassium bonds,assuring a homogeneous potassium deposition and an excellent widertemperature *** complicated experimental studies and theoretical calculations authenticate the synergistic effects of geometric conformation and compositional design for the tremendously enhanced potassium ***,the full device over PM@Sb_(2)Se_(3)@SC anode and the potassium Prussian blue cathode manifests impressively durable cycling life and wider-temperature adaptability,verifying the glorious contribution from the finely manipulation in solvation structure and potassium bonds to enhancing the potassium storage behaviors.

关键词： Anode Sb_(2)Se_(3) rods Interface compatibility Inorganic-organic electrode Potassium ion battery

Ultrafast dynamics of o-fluorophenol studied with femtosecond time-resolved photoelectron and photoion spectroscopy

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1040-1044页

作者： ZHENG QiuSha qin ChaoChao LONG JinYou TANG BiFeng ZHANG song ZHANG bing State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071China Graduate University of the Chinese Academy of Sciences Beijing 100049China Department of Physics Xiaogan UniversityXiaogan 432000China

The ultrafast dynamics of o-fluorophenol via the excited states has been studied by femtosecond time-resolved photoelectron imaging. The photoion and photoelectron spectra taken with a time delay between 267 nm pump laser and 800 nm probe laser provide a longer-lived S1 electronic state of about ns timescale. In comparison,the spectra obtained by exciting the S2 state with femtosecond laser pulses at 400 nm and ionizing with pulses at 800 nm suggest that the S2 state has an ultrashort lifetime about 102 fs and reflects the internal conversion dynamics of the S2 state to the S1 state.

关键词： o-fluorophenol femtosecond time-resolved photoelectron imaging excited states

Whole-infrared-band camouflage with dual-band radiative heat dissipation

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第11期12卷 2391-2401页

作者： bing qin Yining Zhu Yiwei Zhou Min Qiu Qiang Li State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake University18 Shilongshan RoadHangzhou 310024 ZhejiangChina Institute of Advanced Technology Westlake Institute for Advanced Study18 Shilongshan RoadHangzhou 310024 ZhejiangChina

Advanced multispectral detection technologies have emerged as a significant threat to objects,necessitating the use of multiband ***,achieving effective camouflage and thermal management across the entire infrared spectrum,especially the short-wave infrared(SWIR)band,remains *** paper proposes a multilayer wavelength-selective emitter that achieves effective camouflage across the entire infrared spectrum,including the near-infrared(NIR),SWIR,mid-wave infrared(MWIR),and long-wave infrared(LWIR)bands,as well as the visible(VIS)***,the emitter enables radiative heat dissipation in two non-atmospheric windows(2.5-3μm and 5-8μm).The emitter’s properties are characterized by low emittance of 0.270/0.042/0.218 in the SWIR/MWIR/LWIR bands,and low reflectance of 0.129/0.281 in the VIS/NIR ***,the high emittance of 0.742/0.473 in the two non-atmospheric windows ensures efficient radiative heat dissipation,which results in a temperature decrement of 14.4℃ compared to the Cr reference at 2000Wm^(−2) input power *** work highlights the role of solar radiance in camouflage,and provides a comprehensive guideline for developing multiband camouflage compatible with radiative heat dissipation,from the visible to LWIR.

关键词： dissipation visible radiative

Quantifying the effects of long-term news on stock markets on the basis of the multikernel Hawkes process

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2021年第9期64卷 44-56页

作者： Xiao DING Jihao SHI Junwen DUAN bing qin Ting LIU Research Center for Social Computing and Information Retrieval

Recent studies have revealed that long-term financial news can affect stock markets. However,previous research mainly focuses on modeling the short-term effects of financial news and suffers from the weak ability of quantifying the time-decaying influence of financial news. To fill this gap, this study introduces the Hawkes process to estimate the time-decaying influence of long-term financial news. However, the performance of the conventional Hawkes process is sensitive to the choice of kernel functions. Hence, we propose a novel multikernel-powered Hawkes process framework, which uses multiple kernels to model different time-decaying rates, thus alleviating the instability of our proposed Hawkes process based prediction *** results show that the proposed framework yields state-of-the-art stock market prediction accuracies on 515 listed companies and gains more profits in market trading simulation compared with baseline methods. News-based stock prediction can complement studies on price-volume-based stock prediction.

关键词： Hawkes process multikernel function stock market prediction long-term news effects

Scale offers the possibility of identifying adherence to lifestyle interventions in patients with non-alcoholic fatty liver disease

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第25期30卷 3179-3181页

作者： Cen-qin Liu bing Hu Department of Gastroenterology and Hepatology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Gastroenterology and Hepatology/Medical Engineering Integration Laboratory of Digestive Endoscopy West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disorder,and dietary and lifestyle interventions remain the mainstays of NAFLD *** et al established a prediction system to evaluate adherence to lifestyle interventions in patients with NAFLD and choose optimal ***,we discuss the application scenarios of the scale and the areas warranting further attention,aiming to provide a possible reference for clinical recommend-ations.

关键词： Nonalcoholic fatty liver disease Dietary and lifestyle interventions Scale Adherence Exercise

A syntactic path-based hybrid neural network for negation scope detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2020年第1期14卷 84-94页

作者： Lydia LAZIB bing qin Yanyan ZHAO Weinan ZHANG Ting LIU Research Center for Social Computing and Information Retrieval Harbin Institute of TechnologyHarbin 150001China

The automatic detection of negation is a crucial task in a wide-range of natural language processing(NLP)applications,including medical data mining,relation extraction,question answering,and sentiment *** this paper,we present a syntactic path-based hybrid neural network architecture,a novel approach to identify the scope of negation in a *** hybrid architecture has the particularity to capture salient information to determine whether a token is in the scope or not,without relying on any human *** approach combines a bidirectional long shortterm memory(Bi-LSTM)network and a convolutional neural network(CNN).The CNN model captures relevant syntactic features between the token and the cue within the shortest syntactic path in both constituency and dependency parse *** Bi-LSTM learns the context representation along the sentence in both forward and backward *** evaluate our model on the Bioscope corpus,and get 90.82%F-score(78.31%PCS)on the abstract sub-corpus,outperforming features-dependent approaches.

关键词： natural language processing negation scope detection convolutional neural network recurrent neural network syntactic path