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Multifunctional properties of a polar spin chain compound[N(C_(3)H_(7))_(4)][Cu(C_(8)H_(4)NO_(4))]·H_(2)O exhibiting both one-dimensional magnetism and nonlinear optical activity

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Chinese Chemical Letters 2024年第2期35卷 622-625页

作者： ang Li Yanhong Wang Haotian Tian Alimuj.ang Yalikun Yves journaux Min Luo Hongcheng Lu Key Laboratory of Material Chemistry for Energy Conversion and Storage School of Chemistry and Chemical EngineeringHubei Key Laboratory of Bioinorganic Chemistry & Materia MedicaHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 35002China Institut Parisien de Chimie Moléculaire IPCMSorbonne UniversitéCNRSParis F-75252France

Functional materials with multiple properties are urgent to be explored to reach high requirements for applications *** this work,a new multifunctional one-dimensional(1D)chain compound[N(C_(3)H_(7))_(4)][Cu(ohpma)]·H_(2)O 1(ohpma=deprotonated N-(2-hydoxyphenyl)oxamic acid)exhibiting both 1D antiferromagnetic and nonlinear optical properties,which are both originated from the same polar[Cu(C_(8)H_(4)NO_(4))]magnetic units,has been successfully synthesized by evaporation at room ***-polydentate nature of the(ohpma)3−ligand with constrained tridentate and bidentate coordination sites conducts Cu^(2+)ions coordinating in different geometries and forms 1D chains along the c axis,which are further separated by the[N(C_(3)H_(7))_(4)]+*** the 1D magnetic chains further exhibit noncentrosymmetric polar *** optical study shows polar compound 1 exhibits a discernible second-harmonic generation(SHG)efficiency and the calculation of the partial density of states indicates that the SHG efficiency of 1 is mainly originated from the polar[Cu(C_(8)H_(4)NO_(4))]magnetic ***,magnetic susceptibility shows a broad maximum around 70 K with strong intrachain interaction of j/k B=−113.0 K but no long-range order is observed down to 2 K,suggesting that 1 shows a good 1D *** good 1D magnetism and SHG activity suggest that 1 could be as a potential multifunctional material,particularly.

关键词： Multifunctional properties Magnetic property Nonlinear optical property Evaporation One-dimensional chain

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Measuring the built environment of green transit-oriented development:A factorcluster analysis of rail station areas in Singapore

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Frontiers of Architectural Research 2021年第3期10卷 652-668页

作者： Shaofei Niu ang Hu Zhongwei Shen Ying Huang Yanchuan Mou College of Architecture and Environment Sichuan UniversityChengdu610065China School of Architecture and Design Southwest Jiaotong UniversityChengdu611756China Faculty of Architecture and Urban Planning Key Laboratory of New Technology for Construction of Cities in Mountain AreaChongqing UniversityChongqing400030China

Green transit-oriented development(TOD)is an evolution of the TOD theory,influenced by sustainable development and green *** advancement expands the environmental and ecological dimensions of conventional ***,relevant research has only just started,particularly in combination with high-density cities in *** study measures the built environment of Green TOD and identifies the key factors and characteristics of the Green TOD built *** evaluation method for the Green TOD built environment is developed on the basis of the 5D(density,diversity,design,destination,and distance)built environment framework and combined with green urbanism *** from 23 rail station areas in Singapore were collected and analyzed using factor and cluster *** factors,namely,neighborhood spatial form factor,facility completeness factor,open space factor,high-density mixed land-use factor,and walking amenity factor,are *** station areas are classified into five *** characteristics and optimization strategies of each cluster are analyzed on the basis of the statistical and graphical *** research displays the characteristics and typology of the Green TOD built environment in an empirical way and offers a foundation for further research in diverse urban contexts.

关键词： Green TOD Built environment TOD typology Urban analysis GIS

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Detection of maize leaf diseases using improved MobileNet V3-small

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International journal of Agricultural and Biological Engineering 2023年第3期16卷 225-232页

作者： ang Gao Aijun Geng Yuepeng Song Longlong Ren Yue Zhang Xiang Han College of Mechanical and Electrical Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence Tai’an 271018ShandongChina Shandong Provincial Key Laboratory of Horticultural Machineries and Equipment Tai’an 271018ShandongChina

In order to realize the intelligent identification of maize leaf diseases for accurate prevention and control,this study proposed a maize disease detection method based on improved MobileNet V3-small,using a UAV to collect maize disease images and establish a maize disease dataset in a complex context,and explored the effects of data expansion and migration learning on model recognition accuracy,recall rate,and F1-score instructive evaluative indexes,and the results show that the two approaches of data expansion and migration learning effectively improved the accuracy of the *** structured compression of MobileNet V3-small bneck layer retains only 6 layers,the expansion multiplier of each layer was redesigned,32-fold fast downsampling was used in the first layer,and the location of the SE module was *** improved model had an average accuracy of 79.52%in the test set,a recall of 77.91%,an F1-score of 78.62%,a model size of 2.36 MB,and a single image detection speed of 9.02 *** detection accuracy and speed of the model can meet the requirements of mobile or embedded *** study provides technical support for realizing the intelligent detection of maize leaf diseases.

关键词： maize leaf disease image recognition model compression MobileNetV3-small

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Efficacy and safety of low-dose tetracycline,amoxicillin quadruple therapy in Helicobacter pylori infection:A retrospective single center study

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World journal of Gastroenterology 2024年第39期30卷 4295-4304页

作者： Yi-Ru Zhao Xin-jie Wang Meng-jia Zhu ang-Li Chen Dian Zhang Qin Du john j Kim Wei-Ling Hu Department of Gastroenterology Sir Run Run Shaw HospitalMedical SchoolZhejiang UniversityHangzhou 310016Zhejiang ProvinceChina Department of Gastroenterology The First Affiliated HospitalMedical SchoolZhejiang UniversityHangzhou 310003Zhejiang ProvinceChina Department of Gastroenterology The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Keck School of Medicine University of Southern CaliforniaLos AngelesCA 90089-9021United States Institute of Gastroenterology Zhejiang UniversityHangzhou 310016Zhejiang ProvinceChina

BACKGROUND Helicobacter pylori(***)eradication rates have declined with the rise of antibiotic-resistant strains in recent *** highly effective with a low prevalence of resistance,standard dose tetracycline is associated with frequent adverse *** efficacy and safety of low-dose tetracycline as part of tetra-cycline and amoxicillin-containing bismuth quadruple therapy are not well *** To compare the efficacy and safety of low-dose compared to standard dose tetracycline with combined amoxicillin-containing bismuth quadruple therapy in patients with *** *** Consecutive patients with *** infection receiving tetracycline,amoxicillin,proton pump inhibitor,and bismuth for 14 days at Sir Run Run Shaw Hospital(1/2022-6/2023)were *** low-dose tetracycline group received tetracycline 500 mg twice daily(bid)while the standard dose group received 750 mg bid or 500 mg three times daily(tid).Primary endpoints were *** eradication rate and treatment-related adverse events.

关键词： Helicobacter pylori Tetracycline Amoxicillin Eradication Adverse events Bismuth quadruple therapy

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Comparison of white‑to‑white measurements using four devices and their determination of ICL sizing

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Eye and Vision 2024年第5期10卷 28-40页

作者： Robert Edward T.ang Edward Kenneth F.Reyes Fernando Amado j.Ayuyao jr Maria Isabel N.Umali Emerson M.Cruz Asian Eye Institute Phinma PlazaRockwell Center8Th Floor1200 MakatiPhilippines Cardinal Santos Medical Center 10 Wilson St.Greenhills1502 San JuanPhilippines

Background:To compare the measurements obtained from the Orbscan II,IOLMaster 700,Pentacam AXL,and Castroviejo caliper and their effects on calculating the recommended implantable collamer lens(ICL)size and postoperative vault ***:This is a retrospective cross-sectional study of patients who underwent ICL surgery by a single surgeon from March 1,2018 to july 31,*** were reviewed for the anterior chamber depth(ACD)and white-to-white(WTW)measurements obtained from the Orbscan II,IOLMaster 700,Pentacam AXL,and Castroviejo caliper(WTW only).These were used to calculate the recommended ICL *** actual ICL size implanted,and vault measurements obtained one month postoperatively were also ***:One hundred seven eyes with a mean age of 27.9±7.7 years were included in the *** WTW measurements were significantly different between devices(Pangeably for calculating ICL *** the WTW from caliper measurement with the ACD of the IOLMaster 700 or Pentacam AXL could improve ICL sizing and achieve a higher percentage of eyes with the desired vault.

关键词： ICL vault Orbscan II IOLMaster 700 Pentacam AXL Caliper

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Key emergency response technologies for abrupt air pollution accidents in China

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journal of Environmental Sciences 2023年第1期123卷 235-254页

作者： jun Duan Shushuai Mao Pinhua Xie jianlei Lang ang Li jingjing Tong Min Qin jin Xu Zeya Shen Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHFIPSChinese Academy of SciencesHefei 230031China Key Laboratory of Beijing on Regional Air Pollution Control Faculty of Environment and LifeBeijing University of TechnologyBeijing 100124China School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China

Abrupt air pollution accidents can endanger people’s health and destroy the local ecological *** appropriate emergency response can minimize the harmful effects of accidents and protect people’s lives and *** paper provides an overview of the key emergency response technologies for abrupt air pollution accidents around the globe with emphasis on the major achievements that China has obtained in recent *** decades of effort,China has made significant progress in emergency monitoring technologies and equipment,source estimation technologies,pollutant dispersion simulation technologies and *** effective domestic emergency monitoring instruments(e.g.,portable DOAS/FT-IR systems,portable FID/PID systems,portable GC-MS systems,scanning imaging remote sensing systems,and emergency monitoring vehicles)had been developed which can meet the demands for routine emergency response activities.A monitoring layout technique combining air dispersion simulation,fuzzy comprehensive evaluation,and a post-optimality analysis was proposed to identify the optimal monitoring layout scheme under the constraints of limited monitoring *** source estimation technologies,including the forward method and the inversion method,have been established and evaluated under various ***-scale dynamic pollution dispersion simulation systems with high temporal and spatial resolution were further developed.A comprehensive emergency response platform integrating database support,source estimation,monitoring schemes,fast monitoring of pollutants,pollution predictions and risk assessment was developed based on the technical idea of"source identification-model simulation-environmental monitoring"dynamic interactive *** is expected that the emergency response capability for abrupt air pollution accidents will gradually improve in China.

关键词： Air pollution accidents Emergency response Emergency monitoring Source estimation Pollutant dispersion simulation

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Main issues in research and practice of environmental protection for water conservancy and hydropower projects in China

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Water Science and Engineering 2016年第4期9卷 312-323页

作者： ang Chen Miao Wu Kai-qi Chen Zhi-yu Sun Chen Shen Peng-yuan Wang Institute of Hydropower and Environment Research China Three Gorges Corporation School of Civil Engineering Tsinghua University College of Hydrology and Water Resources Hohai University Appraisal Center for Environment and Engineering Ministry of Environmental Protection

In this paper,we generally summarize the main issues in the operational period of water conservancy and hydropower projects in China over the past several ***,the adverse impacts of these projects since the technical guidelines were proposed in 2006 are ***,combined with projects and experience from 2006 to 2014,the four main issues are summarized:(1) There exist many questions in the design and construction of fishways,which are useful for fish migration,and the migration effects are not as expected.(2) Temperature stratification affecting the downstream fish is the major impact of temperature,and alters fish spawning in the reproduction season.(3)Ecological base flow has been one of the primary questions of the last 30 years in China,the greatest related difficulty being quantification of the amount and flow process necessary to satisfy fish life history.(4) Fish habitat protection and restoration are popular topics in recent years with the development of river ecosystem *** habitat loss due to the impacts of dam construction and habitat fragmentation has become more and more *** four issues are now the main difficulties in water project management,and interact with one another to bear combined effects on river *** issues of eco-hydraulic consideration in the design period are the key ***,future priorities for research and practice of environmental protection for water conservancy and hydropower projects in China are *** main purpose of this paper is to enhance the scientific research,monitoring,and assessment of operating effectiveness.

关键词： Temperature stratification Ecological base flow Fish habitat Environmental protection

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A Review of the Research on Language Teacher Autonomy

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Sino-US English Teaching 2012年第4期9卷 1045-1055页

作者： j.ang Yu-hong MATing Southwest University Chongqing China Xiao Tang Shan Middle School Beijing China

Teacher autonomy is one of the most significant and problematic concepts to have emerged from the field of teacher education in recent years. It has generally been referred to as teachers＇ control over their own teaching Teachers＇ autonomous learning is also one of the most effective ways to support teachers in their classroom practice, as well as to improve and expand their professional preparation and practices. Research on teacher autonomy in the field of second language education has had a short history and many terms related to language teacher autonomy are still under discussion. The paper mainly discusses the rationale of teacher autonomy and its related topics in the literature in recent years, and then presents the authors＇ own views about the research on teacher autonomy of university English teachers in China.

关键词： English teachers teacher autonomy literature review

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Simultaneous removal of Congo red and cadmium(Ⅱ) from aqueous solutions using graphene oxide–silica composite as a multifunctional adsorbent

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journal of Environmental Sciences 2020年第12期32卷 151-160页

作者： Ebrahim Mahmoudi Sepehr Azizkhani Abdul Wahab Mohammad Law Yong Ng Abdelbaki Benamor Wei Lun ang Muneer Ba-Abbad Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Department of Chemical and Environmental Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Chemical Engineering Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongCheras43000 KajangSelangorMalaysia Centre for Sustainable Process Technology(CESPRO) Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Gas Processing Centre Qatar UniversityP.O.Box 2713DohaQatar

Graphene oxide is a very high capacity adsorbent due to its functional groups and π-π interactions with other compounds. Adsorption capacity of graphene oxide, however, can be further enhanced by having synergistic effects through the use of mixed-matrix composite. In this study, silica-decorated graphene oxide(SGO) was used as a high-efficiency adsorbent to remove Congo red(CR) and Cadmium(Ⅱ) from aqueous solutions. The effects of solution initial concentration(20 to 120 mg/l), solution pH(pH 2 to 7), adsorption duration(0 to 140 min) and temperature(298 to 323 K) were measured in order to optimize the adsorption conditions using the SGO adsorbent. Morphological analysis indicated that the silica nanoparticles could be dispersed uniformly on the graphene oxide surfaces. The maximum capacities of adsorbent for effective removal of Cd(Ⅱ) and CR were 43.45 and 333.33 mg/g based on Freundlich and Langmuir isotherms, respectively. Langmuir and Freundlich isotherms displayed the highest values of Q max for CR and Cd(Ⅱ) adsorption in this study, which indicated monolayer adsorption of CR and multilayer adsorption of Cd(II) onto the SGO, respectively. Thermodynamic study showed that the enthalpy( H) and Gibbs free energy( G) values of the adsorption process for both pollutants were negative, suggesting that the process was spontaneous and exothermic in nature. This study showed active sites of SGO( π-π, hydroxyl, carboxyl, ketone, silane-based functional groups) contributed to an enormous enhancement in simultaneous removal of CR and Cd(Ⅱ) from an aqueous solu-tion, Therefore, SGO can be considered as a promising adsorbent for future water pollution control and removal of hazardous materials from aqueous solutions.

关键词： Graphene-oxide Multifunctional adsorbent Competitive removal Heavy metal-dye removal

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Cobalt-embedded few-layered carbon nanosheets toward enhanced hydrogen evolution:Rational design and insight into structure-performance correlation

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journal of Energy Chemistry 2021年第7期30卷 156-161页

作者： Liwen Xing Hongyi Gao Dandan jia Xiao Chen Mengyi Han junjun Lv ang Li Ge Wang Xingtian Shu Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule&Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology Beijing30 Xueyuan RoadBeijing 100083China Research Institute of Petroleum Processing SINOPECBeijing 100083China Institute of Advanced Materials Beijing Normal UniversityBeijing 100875China School of Chemistry Biology and Materials Engineering Suzhou University of Science and TechnologySuzhou 215009JiangsuChina Shunde Graduate School University of Science and Technology BeijingFoshan 528399GuangdongChina

Over the past decades, the energy and concomitant environment issues, such as energy shortage, air pollution and global warming, have been becoming increasingly striking world-wide challenges [1,2]. Such a dilemma in ... 详细信息

关键词： Electrocatalyst Metal-organic frameworks Carbon nanosheets Hydrogen evolution reaction Structure-performance correlation

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