作者： QIXiao-Wei，WUShui-Xing，HANLi-Zhi，SHIZai-Feng，ZHANGXiao-Peng， （Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering,Hainan Normal University；Department of Chemistry, Northeast Normal University）

出处： 结构化学 2020 第39卷 第4期 P709-717

关键词： Pt(Ⅱ)；complex；luminescence；Pt…Pt；interactions；density；functional；theory；(DFT)

摘要： Polymorphic structures of cyclometalated cationic Pt(Ⅱ)-isocyanide complexes (-)-1 [Pt((-)-NNC)(Dmpi)]CI with different packing modes can be isolated ...

作者： Xiaoying Zhou;Feipeng Zhang （Department of Statistics, Hainan Normal University, Haikou, China;Key Laboratory of Data Science and Intelligence Education Ministry of Education, Hainan Normal University, Haikou, China;School of Economics and Finance, Xi\'an Jiaotong University, Xi\'an, China;Feipeng Zhang, School of Economics and Finance, Xi\'an Jiaotong University, Xi\'an, 710049, China.）

出处： Statistical Analysis and Data Mining: The ASA Data Science Journal 2020 Vol.13 No.3 P216-228

关键词： change point;quantile regression;smoothing technique

摘要： A bent line quantile regression model can describe the conditional quantile function of the response variable with two different straight lines, which ...

作者： Dalong Li;Haiyan Chen;Shaofeng Jia;Aifeng Lv （Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China College of Geography and Environmental Science, Hainan Normal University, Haikou 571158, China Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China）

出处： Water 2020 Vol.12 No.2 P467

关键词： stream water;groundwater;kaidu river basin;hydrochemical process;water–rock interaction;human activity

摘要： Hydrochemical processes under intense human activities were explored on the basis of the hydrochemical characteristics of 109 surface water samples an ...

作者： Xingman Liu;Min Zhang;Ronglin Zhong;Shuixing Wu;Yingying Liu;Yun Geng;Zhong-Min Su （Northeast Normal University, College of Chemistry, CHINA. Jilin University, Instituation of Theoretical Chemistry, CHINA. Hainan Normal University, School of Chemistry and Chemical Engineering, CHINA. Northeast Normal University, Institute of Functional Material Chemistry, Faculty of Chemistry, No. 5268 Renmin Street, 130024, Changchun, CHINA.）

出处： Chemistry (Weinheim an der Bergstrasse, Germany) 2020

关键词： Beryllium-beryllium bond,neutral odd-electron bond;hybridization;amidinate

摘要： The complexes containing odd-electron Be-Be bond are rare until now. Hereby, a series of neutral di-beryllium amidinate complexes containing Be-Be bon ...

作者： Jing, De-Kun;Xu, Han-Ru;Yang, Xiao-Han;Yang, Rui-Lian;Liu, Zhuo;Dou, Shao-Bin;Mo, Zheng-Rong;Li, Gao-Nan;Niu, Zhi-Gang （1 College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China）

出处： Journal of Chemical Research 2020 Vol.44 No.1-2 P67-71

关键词： 5,7-difluoro-2-phenylbenzothiazole;density functional theory calculations;iridium (III) complexes;photoluminescence;synthesis

摘要： Two new phosphorescent iridium(III) complexes, (dfbt)2Ir(pic) and (dfbt)2Ir(acac) (dfbt = 5,7-difluoro-2-phenylbenzothiazole, pic = picolinate, acac = ...

作者： Bo Zhou;Wei Liang （Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China Corresponding author.;Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China）

出处： Global Ecology and Conservation 2020 Vol.22 Pe00921

关键词： Flight initiation distance;Tropical bird;Ecotourism;Species confidence hypothesis

摘要： Behavioral plasticity is a key factor facilitating the coexistence of humans and other species in a rapidly urbanizing world. An animal’s anti-predati ...

作者： Changzhang Feng;Wei Liang （Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China Corresponding author.;Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China）

出处： Global Ecology and Conservation 2020 Vol.22 Pe00994

关键词： Fisherman;Flight initiation distance;Recognition ability;Waterbirds

摘要： Increasing global human population and constant exploitation and utilization of natural resources have strongly impacted bird populations worldwide. T ...

作者： Jiang, Xiaobo;Zu, Li;Jiang, Daqing;O\'Regan, Donal （1 College of Mathematics and Statistics, Hainan Normal University, 571158, Haikou, Hainan, China 2 School of Science, China University of Petroleum (East China), 266580, Qingdao, China 3 Nonlinear Analysis and Applied Mathematics (NAAM)-Research Group, King Abdulaziz University, Jeddah, Saudi Arabia 4 School of Mathematics, Statistics and Applied Mathematics, National University of Ireland, Galway, Ireland）

出处： Bulletin of the Malaysian Mathematical Sciences Society 2020 Vol.43 No.3 P2171-2197

关键词： 92D25;Holling type II functional response;Markov switching;Primary 34F05;Secondary 92Bxx;Stationary distribution;Stochastic predator–prey model;Threshold

摘要： The goal of this paper is to introduce and to initiate a study of a predator–prey system with Holling type II functional response, which is disturbed ...

作者： Xinyue Jiang;Yuqun Xie;Duanji Wan;Fuping Zheng;Jun Wang （e Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou, 571158, China b Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, 100048, China a School of Bioengineering and Food Science, Hubei University of Technology, Wuhan, Hubei, 430068, China d College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China c School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Hubei, Wuhan, 430068, China）

出处： Analytica Chimica Acta 2020 Vol.1126 P124-132

关键词： Ethyl carbamate;Urea;Citrulline;Arginine;Rice wine;Simultaneous detection

摘要： Intensive efforts have been made to diminish ethyl carbamate in fermentation products. The presented research demonstrated an approach to simultaneous ...

作者： Wang, Xuemei (AUTHOR);Wang, Xuan (AUTHOR);Dong, Miao (AUTHOR);Li, Zhiming (AUTHOR);Liu, Zhongxin (AUTHOR);Lu, Juyou (AUTHOR);Lin, Qiang (AUTHOR);Yang, Jianxin (AUTHOR)( yangjxmail@hainanu.edu.cn) （1 Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, 570228, Haikou, People\'s Republic of China 2 Provincial Fine Chemical Engineering Research Center, Hainan University, 570228, Haikou, People\'s Republic of China 3 Key Laboratory of Green Catalysis and Reaction Engineering of Haikou, School of Science, School of Chemical Engineering and Technology, Hainan University, 570228, Haikou, People\'s Republic of China 4 Sinopec Hainan Refining and Chemical Co. Ltd., 578101, Yangpu, People\'s Republic of China 5 College of Chemistry and Chemical Engineering, Hainan Normal University, 571158, Haikou, People\'s Republic of China）

出处： Journal of Coatings Technology & Research 2020 Vol.17 No.2 P553-561

关键词： 1H-Indole-1-carboxylic acid esters;Algal;Barnacle;Biological activities;Synthesis

摘要： A series of indole-1-carboxylic acid aryl esters was synthesized with indole and substituted phenols as raw materials. The structures of the target co ...