检索结果-南通市图书馆

ecological risk assessment and ecological security pattern optimization in the middle reaches of the Yellow River based on ERI+MCR model

引用

Journal of Geographical Sciences 2023年第4期33卷 823-844页

作者： YANG Lian'an LI Yali JIA Lujing JI Yongfan HU Guigui Shaanxi key laboratory of Earth Surface System and environmental Carrying Capacity Northwest UniversityXi'an 710127China Yellow River Institute of Shaanxi province Northwest UniversityXi'an 710127China College of Urban and environmental Sciences Northwest UniversityXi'an 710127China

The middle reaches of the Yellow River represent an important area for the protection and development of the Yellow River *** of the area of the river basin is within the Loess Plateau,which establishes it as a fragile ecological ***,using high-resolution data of land use in the watershed from the past 30 years,landscape ecological risk(LER)sample units are defined and an ecological risk index(ERI)model is *** interpolation is used to display the LER spatial patterns,and the temporal and spatial evolution of risk is ***,the spatial evolution of land use landscape change(LULC)is analyzed,and the correlation between land use landscape and ecological risk is ***,Based on the LER model,a risk-based minimum cumulative resistance(MCR)model is established,and a comprehensive protection and management network system for the ecological source-corridor-node system *** results suggest that in the past 30 years,LER has a high spatial correlation and areas with extremely high ecological risks are concentrated in northwest and southeast areas of the region,of which the northwest area accounts for the highest *** intensity is closely related to the spatial pattern of land use *** values of forestland,grasslands,and unused land and farmland are low,medium,and high,*** trend of risk evolution is“overall improvement and partial deterioration”.Man-made construction and exploitation is the most direct reason for the increase of local ecological *** high ecological-risk areas in the northwest are dominated by deserts which reduce excessive interference by human activities on the natural *** are:high-quality farmland should be protected;forestland should be restored and rebuilt;repair and adjust the existing ecosystem to assist in landscape regeneration and reconstruction;utilize the overall planning vision of“mountain,water,forest,field,lake,grass,sa

关键词： landscape ecological risk MCR model ecological security pattern middle reaches of the Yellow River

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and electrochemical properties of Li2FeSiO4/C/Ag composite as a cathode material for Li-ion battery

引用

Journal of Central South University 2019年第6期26卷 1443-1448页

作者： TANG Yi-qun LIU Xi HUANG Xiao-bing DING Xiang ZHOU Shi-biao CHEN Yuan-dao Hunan province Cooperative Innovation Center for the construction & Development of Dongting Lake ecological Economic Zone College of Chemistry and Materials EngineeringHunan University of Arts and ScienceChangde 415000China key laboratory of Preparation and Application of environmental Friendly Materials of Ministry of Education Jilin Normal UniversityChangchun 130103China

Li2FeSiO4 is deemed to be a potential candidate for large-scale applications because of its abundance,low cost and high safety,***,its low conductivity,resulting in poor rate performance,has become a main obstacle to its applications in power battery and energy storage *** this work,C-Ag coated Li2FeSiO4 is introduced to improve the innate electronic conductivity and Li-ion diffusion *** results demonstrate that Li2FeSiO4/C/Ag composite exhibits better electrochemical *** possesses a specific discharge capacity of 152,121,108 mA.h/g at 0.2C,5C and 10C,*** the same time,the Li2FeSiO4/C/Ag composite shows good cycle stability and a capacity retention ratio of 97.9%after 100 cycles at 1C.

关键词： lithium-ion batteries cathode material Li2FeSiO4 pitch C-Ag coating

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Thermo-driven oleogel-based self-healing slippery surface behaving superior corrosion inhibition to Mg-Li alloy

引用

Journal of Magnesium and Alloys 2023年第12期11卷 4710-4723页

作者： Yibo Ouyang Huijun Kang Enyu Guo Ri Qiu Keqiang Su Zongning Chen Tongmin Wang key laboratory of Solidification Control and Digital Preparation Technology(Liaoning province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024PR China Ningbo Institute of Dalian University of Technology Ningbo 315000PR China College of Safety and environmental Engineering Shandong University of Science and TechnologyQingdao 266590PR China State key laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266101PR China Institute of Yellow River Delta Earth Surface Processes and ecological Integrity Shandong University of Science and TechnologyPR China

Bioinspired by Nepenthes, lubricant infused surfaces(LIS) have attracted widespread attention in the field of anticorrosion. However,the lubricant coating has some disadvantages such as complex construction processing and easy loss of oil phase in air or dynamic water phase. In this study, oleogel is infused into a lotus leaf inspired super-hydrophobic matrix to form an oleogel infused surface(OIS) for enhancing corrosion resistance of active Mg-Li alloy. For reserving oleogel, firstly, a facile one-step electrodeposition method is used to construct super-hydrophobic surface(SHS) composed by samarium/myristic acid complex micro-nano flower structure onto Mg-Li *** coating exhibits excellent superhydrophobic property at a static contact angle of 160° by applying 30 V electrolysis for 30 min. The protection efficiency of single SHS highly relates with the metal itself. For short period immersion in water phase, SHS can afford protection to Mg-Li alloy. However, the long-term immersion will see the rapid failure of SHS, and the high activity of Mg-Li alloy is one main *** assume that SHS cannot be a good choice for protecting Mg-Li alloy. Then, a Nepenthes inspired liquid coating is formed by infusing oleogel into the micro-nano structure by a spin-coating method. The liquid coating performs prominent corrosion resistance with Rctreaching as high as 1.51 × 10^(10)Ω cm^(2). After the mechanical damage from the external environment, the liquid coating can realize self-repair through thermal assistance, and the liquid coating can still restore Rctup to 1.24 × 10^(10)Ω cm^(2) after healing. The corrosion resistance of the liquid coating remains strong by showing Rctas high as 1.14 × 10^(9)Ω cm^(2), even after immersion in representative corrosive 3.5 wt% Na Cl solution for 30 d.

关键词： Mg-Li alloy Oleogel Superhydrophobic Self-healing Corrosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The status evaluation of the permafrost environment along the Chaida'er-Muli Railway in southern Qilian Mountains in northern Qinghai province,China

引用

Journal of Mountain Science 2016年第12期13卷 2124-2134页

作者： CAO Wei SHENG Yu CHOU Ya-ling WU Ji-chun LI Jing WANG Sheng-ting State key laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences key laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu province Lanzhou University of Technology

Engineering construction has major influence on the permafrost *** paper analyzes the interaction between engineering construction and permafrost environment along the Chaidaer-Muli Railway(simply,CMR) based on the press-state-response(PSR) *** permafrost environmental system is divided into three subsystems,consisting of permafrost thermal stability,proneness to the freeze-thawing erosion and permafrost ecological *** subsystem considers its most important influencing *** Progression Method(CPM) is applied to calculate the current environment condition along the *** result indicates that:(1) as far as the thermal stability is concerned,most sections along the CMR are mainly concentrated in rank Ⅲ(fair situation),and a few in Ⅱ(good situation) and Ⅳ(bad situation),respectively;(2) for the proneness tothe freeze-thawing erosion,the entire railway route falls largely in rank Ⅱ(good situation);(3) along the CMR,the ecological fragility of the permafrost environment is in rank Ⅱ(good situation),or slightly fragile;(4) overall,the permafrost environments along the CMR are in rank Ⅲ(fair situation) or Ⅱcondition(good situation).In general,the permafrost environment along the CMR is *** is mainly because a series of active measures of protecting permafrost were taken for stabilizing the CMR foundation *** the one hand,we should try our best to minimize the influences that engineering activities have exerted on ecology and environment,on the other hand,the positive measures have made improvements to prevent the permafrost environment from deterioration.

关键词： Permafrost environment Press-stateresponse framework Catastrophe theory Chaida'erMu Railway environmental impact

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A lysosomal polarity-specific two-photon fluorescent probe for visualization of autophagy

引用

Chinese Chemical Letters 2021年第5期32卷 1803-1808页

作者： Zixiang Yuan Jun Chen Qin Zhou Ao Liu Zeming Qiang Min Fang Man Chen Yan Feng Haizhu Yu Xiuli Yang Xiangming Meng School of Chemistry and Chemical Engineering&Anhui province key laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Anhui UniversityHefei 230601China key laboratory for Advanced Technology in environmental Protection of Jiangsu province Yancheng Institute of TechnologyYancheng 224051China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Anhui Golden Sun Biochemical Pharmaceuticals Limited Company Fuyang 236000China

Autophagy plays a vital role in maintaining the balance of normal physiological state of living *** this paper,a polarity-specific two-phot on fluorescent probe Lyso-NA based on naphthalimide was synthesized for the purpose of monitoring autophagy during biological *** results of photophysical properties and theoretical calculation con firmed that different polarities of solvents mainly effected fluorescent intensities of *** nt intensity,quantum yield and fluorescence lifetime of probe kept a good linear relationship with polarity *** addition,due to its low toxicity and selective accumulation in lysosomes,Lyso-NA is suitable for detecting changes in lysosomal polarity of living *** with the imaging results of plasmid transfection,a better performed realtime long-term fluoresce nt visualization of autophagy in living cells was *** Lyso-NA can work as an efficient and cost effective imaging tool for visualizing autophagy in living cells.

关键词： Two-photon fluorescent probe Lysosomal polarity Autophagy Visualization Plasmid transfection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The driving force of water resource stress change based on the STIRPAT model:take Zhangye City as a case study

引用

Research in Cold and Arid Regions 2021年第4期13卷 337-348页

作者： Xia Tang XinYuan Wang Lei Feng key laboratory of Ecohydrology of Inland River Basin Chinese Academy of SciencesLanzhouGansu 730000China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhouGansu 730000China ecological environmental Supervision and Administration Bureau of Gansu province LanzhouGansu 730020China Gansu Computing Center LanzhouGansu 730030China

A prominent contradiction between supply and demand of water resources has restricted local development in social and economic aspects of Zhangye City,located in a typical arid region of *** study quantified the Water Resource Stress Index(WRSI)from 2003 to 2017 and examined the factors of population,urbanization level,GDP per capita,Engel coefficient,and water consumption per unit of GDP by using the extended stochastic impact by regression on population,affluence and technology(STIRPAT)model to find the key factors that impact WRSI of Zhangye City to relieve the pressure on water *** ridge regression method is applied to improve this model to eliminate multicollinearity *** WRSI system was developed from the following three aspects:water resources utilization(WR),regional economic development water use(WU),and water environment stress(WE).Results show that the WRSI index has fallen from 0.81(2003)to 0.17(2017),with an average annual decreased rate of 9.8%.Moreover,the absolute values of normalized coefficients demonstrate that the Engel coefficient has the largest positive contribution to increase WRSI with an elastic coefficient of 0.2709,followed by water consumption per unit of GDP and population with elastic coefficients of 0.0971 and 0.0387,*** contrast,the urbanization level and GDP per capita can decrease WRSI by−0.2449 and−0.089,*** decline of WRSI was attributed to water-saving society construction which included the improvement of water saving technology and the adjustment of agricultural planting ***,this study demonstrated the feasibility of evaluating the driving forces affecting WRSI by using the STIRPAT model and ridge regression analysis.

关键词： water resource stress index STIRPAT model driving force analysis water scarcity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multiple evaluations of atmospheric behavior between Criegee intermediates and HCHO: Gas-phase and air-water interface reaction

引用

Journal of environmental Sciences 2023年第5期127卷 308-319页

作者： Tianlei Zhang Mingjie Wen Chao Ding Yongqi Zhang Xiaohui Ma Zhuqing Wang Makroni Lily Junhai Liu Rui Wang Institute of Theoretical and Computational Chemistry Shaanxi Key Laboratory of CatalysisSchool of Chemical&Environment ScienceShaanxi University of TechnologyHanzhong 723001China School of environmental Science and Engineering Institute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Shandong key laboratory of Biophysics Institute of BiophysicsDezhou UniversityDezhou 253023China environmental Research Institute Shandong UniversityQingdao 266237China Qinba Mountains of Bio-Resource Collaborative Innovation Center of Southern Shaanxi province Shaanxi University of TechnologyHanzhong 723001China

Given the high abundance of water in the atmosphere,the reaction of Criegee intermediates(CIs)with(H_(2)O)_(2) is considered to be the predominant removal pathway for ***,recent experimental findings reported that the reactions of CIs with organic acids and carbonyls are faster than *** the same time,the interface behavior between CIs and carbonyls has not been reported so ***,the gas-phase and air-water interface behavior between Criegee intermediates and HCHO were explored by adopting high-level quantum chemical calculations and Born-Oppenheimer molecular dynamics(BOMD)*** chemical calculations evidence that the gas-phase reactions of CIs+HCHO are submerged energy or low energy barriers *** rate ratios speculate that the HCHO could be not only a significant tropospheric scavenger of CIs,but also an inhibitor in the oxidizing ability of CIs on SO_(x) in dry and highly polluted areas with abundant HCHO *** reactions of CH_(2)OO with HCHO at the droplet’s surface follow a loop structure mechanism to produce i)SOZ(■),ii)BHMP(HOCH_(2)OOCH_(2)OH),and iii)HMHP(HOCH_(2)OOH).Considering the harsh reaction conditions between CIs and HCHO at the interface(i.e.,the two molecules must be sufficiently close to each other),the hydration of CIs is still their main atmospheric loss *** results could help us get a better interpretation of the underlying CIs-aldehydes chemical processes in the global polluted urban atmospheres.

关键词： Criegee intermediates HCHO Atmospheric behavior Air-water interface Chemical processes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Spatio-temporal Differentiation and Driving Factors of Industrial Ecology of Restricted Development Zone from Adaptive Perspective:A Case Study of Shandong,China

引用

Chinese Geographical Science 2021年第2期31卷 329-341页

作者： GUO Fuyou GAO Siqi TONG Lianjun QIU Fangdao YAN Hengzhou School of Geography and Tourism Qufu Normal UniversityRizhao 276800China Rizhao key laboratory of Territory Spatial Planning and ecological construction Rizhao 276800China Northeast Institute of Geography and Agricultural Ecology Chinese Academy of SciencesChangchun 130102China School of Geography Geomatics and PlanningJiangsu Normal UniversityXuzhou 221116China

Based on the adaptive analysis paradigm,this paper constructs an evaluation index system and an evaluation model of the level of industrial ecology of a restricted development zone from the perspective of the industrial system and of the environmental system,and studies the spatial-temporal differentiation characteristics and the driving factors of the level of industrial ecology of the restricted development zone of the Shandong province,China,by using a variety of measurement *** results show that:1)In the temporal dimension,the level of industrial ecology of the research area increased from 2005 to 2017,while in the regional dimension,it was higher in the eastern coastal areas,followed by the northwestern area and the southwestern area;2)In the spatial dimension,from 2005 to 2017 the level of industrial ecology of the research area had a clear spatial dependence,and the regional spatial agglomeration of the restricted development zones with similar industrial ecology levels become increasingly evident;3)On the whole,the industrial ecology level in the study area had a clear spatial differentiation pattern,as it was higher in the north and in the east and lower in the south and in the ***,its evolution model changed from a‘three-core driven model’to a‘spatial scattered mosaic distribution model’,and then to a‘single-core driven model’;4)Industrial ecology was positively correlated with economic development,foreign investment,science and technology,and negatively correlated with the government role,while industrial structure and environmental regulation failed to pass the statistical significance test.

关键词： adaptability industrial ecology spatio-temporal differentiation restricted development zone Shandong province,China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

construction of ternary CuO/CuFe_(2)O_(4)/g-C_(3)N_(4)composite and its enhanced photocatalytic degradation of tetracycline hydrochloride with persulfate under simulated sunlight

引用

Journal of environmental Sciences 2022年第2期34卷 59-70页

作者： Lei Wang Xiaolei Ma Guofang Huang Rui Lian Jingwei Huang Houde She Qizhao Wang Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China School of environmental Science and Engineering Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of EducationChang'an UniversityXi'an 710054China

In this study,a graphitic carbon nitride(g-C_(3)N_(4))based ternary catalyst Cu O/Cu Fe_(2)O_(4)/gC_(3)N_(4)(CCCN)is successfully prepared thorough calcination *** confirming the structure and composition of CCCN,the as-synthesized composites are utilized to activate persulfate(PS)for the degradation of organic *** using tetracycline hydrochloride(TC)as pollutant surrogate,the effects of initial p H,PS and catalyst concentration on the degradation rate are systematically *** the optimized reaction condition,CCCN/PS is able to give 99%degradation extent and 74%chemical oxygen demand removal in assistance of simulated solar light,both of which are apparently greater than that of either Cu O/Cu Fe_(2)O_(4)and pristine g-C_(3)N_(4).The great improvement in degradation can be assignable to the effective separation of photoinduced carriers thanks to the integration between Cu O/Cu Fe_(2)O_(4)and g-C_(3)N_(4),as well as the increased reaction sites given by the g-C_(3)N_(4)***,the scavenging trials imply that the major oxidative matters involved in the decomposition are hydroxyl radicals(·OH),superoxide radicals(·O_(2)^(-))and photo-induced holes(h^(+)).

关键词： Copper ferrite Graphitic carbon nitride Heterojunction photocatalyst Peroxydisulfate Tetracycline hydrochloride

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phytoremediation capacity of the hyperaccumulator Solanum nigrum *** Solanum lycopersicum *** at the flowering stage in cadmium-polluted soil

引用

Pedosphere 2024年第3期34卷 676-680页

作者： Jibao JIA Huiping DAI Shuhe WEI Lidia SKUZA Jianming XUE Rong LI Quan SUN School of Agriculture Ningxia UniversityYinchuan 750021(China) School of Biological Science and Engineering Shaanxi University of TechnologyHanzhong 723001(China) key laboratory of Pollution Ecology and Environment Engineering Institute of Applied EcologyChinese Academy of SciencesShenyang 110016(China) Institute of Biology Centre for Molecular Biology and BiotechnologyUniversity of SzczecinSzczecin 71-415(Poland) New Zealand Forest Research Institute(Scion) POB 29237Christchurch 8440(New Zealand)

Dear Editor,Remediation of cadmium(Cd)-contaminated soil is a popular topic in global environmental *** using hyperaccumulators or certain plants to accumulate and remove Cd from polluted soils is a promising *** et al.(2005)first described Solanum nigrum *** a Cd ***,various aspects of ***,including the protective effects on proline,physiological and biochemical responses,earthworms,arbuscular mycorrhizal fungi,and fertilizers and the intercropping with Solanum photeinocarpum,have been extensively studied(Xu et al.,2009;Khan et al.,2014;Wang et al.,2015;Tang et al.,2017;Yang et al.,2019).

关键词： soil cultivar cadmium

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：