检索结果-南通市图书馆

Simulation and analysis of the long-term impacts of 1.5°C global climate pledges on China's land systems

Science China Earth Sciences 2025年

作者： Jiaying LV Changqing SONG Yifan GAO Sijing YE Peichao GAO State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University center for geodata and analysis Beijing Normal University

Global warming has become a shared issue for humanity. At the 26th Conference of the Parties to the United Nations Framework Convention on Climate Change in 2021, participating countries reached climate pledges aimed at making more proactive contributions to limit the global average temperature rise within 1.5°C by 2100. Land system changes are significant responses of land to climate change. As one of the contracting parties, China has proposed climate targets such as carbon peaking and carbon neutrality goals in recent years to support the global pledges of limiting global warming to1.5°C, which will profoundly impact China's future land system changes. This study focuses on China as the study area,produces data with a thematic resolution of 27 types of land systems, integrates the output of various land types by the Global Change Assessment Model(GCAM) into four categories of land service demand, and combines these with the improved CLUMondo model to simulate China's land system changes in 2100 under a 1.5°C global warming scenario and a reference scenario without updated emission reduction measures. The conclusions of this study are as follows:(1) The method of integrating the GCAM and improved CLUMondo model demonstrates high validation accuracy in simulating China's land system changes, effectively predicting the changes.(2) Under the 1.5°C global warming scenario, the quality of ecosystems related to mountains, water, forests, farmland, lakes, and grasslands in China improved. The areas of shrubland, wetland, and forest are projected to increase by 185%, 79%, and 33%, respectively, with low-density shrubland, high-density wetland, and high-density forest showing the most significant increases.(3) Compared with the reference scenario, the 1.5°C climate pledges drive greater changes in future land systems, with wetland and forest area growth levels exceeding those of the reference scenario by 20% and 10%, respectively. Notably, the changes in cropland, grasslan

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Simulation and analysis of the long-term impacts of 1.5℃ global climate pledges on China's land systems

引用

Science China Earth Sciences 2025年第2期68卷 457-472页

作者： Jiaying LV Changqing SONG Yifan GAO Sijing YE Peichao GAO State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China center for geodata and analysis Beijing Normal UniversityBeijing 100875China

Global warming has become a shared issue for *** the 26th Conference of the Parties to the United Nations Framework Convention on Climate Change in 2021,participating countries reached climate pledges aimed at making more proactive contributions to limit the global average temperature rise within 1.5℃by *** system changes are significant responses of land to climate *** one of the contracting parties,China has proposed climate targets such as carbon peaking and carbon neutrality goals in recent years to support the global pledges of limiting global warming to 1.5℃,which will profoundly impact China's future land system *** study focuses on China as the study area,produces data with a thematic resolution of 27 types of land systems,integrates the output of various land types by the Global Change Assessment Model(GCAM)into four categories of land service demand,and combines these with the improved CLUMondo model to simulate China's land system changes in 2100 under a 1.5℃global warming scenario and a reference scenario without updated emission reduction *** conclusions of this study are as follows:(1)The method of integrating the GCAM and improved CLUMondo model demonstrates high validation accuracy in simulating China's land system changes,effectively predicting the changes.(2)Under the 1.5℃global warming scenario,the quality of ecosystems related to mountains,water,forests,farmland,lakes,and grasslands in China *** areas of shrubland,wetland,and forest are projected to increase by 185%,79%,and 33%,respectively,with low-density shrubland,high-density wetland,and high-density forest showing the most significant increases.(3)Compared with the reference scenario,the 1.5℃climate pledges drive greater changes in future land systems,with wetland and forest area growth levels exceeding those of the reference scenario by 20%and 10%,***,the changes in cropland,grassland,and wetland areas are more pronounced in so

关键词： 1.5℃global warming China Land system changes Simulation Scenario analysis

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

Tauroursodeoxycholic acid targets HSP90 to promote protein homeostasis and extends healthy lifespan

引用

Science China(Life Sciences) 2025年第2期68卷 416-430页

作者： Jia-Yu Liu Yao Wang Yue Guo Run-Qi Zheng Yun-Ying Wang Yan-Yan Shen Yan-Hong Liu Ai-Ping Cao Rui-Bo Wang Bo-Yang Xie Shuai Jiang Qiu-Ying Han Jing Chen Fang-Ting Dong Kun He Na Wang Xin Pan Tao Li Tao Zhou Ai-Ling Li Qing Xia Wei-Na Zhang Nanhu Laboratory National Center of Biomedical AnalysisBeijing 100850China

As the elderly population expands,the pursuit of therapeutics to reduce morbidity and extend lifespan has become increasingly *** an FDA-approved drug for chronic cholestatic liver diseases,tauroursodeoxycholic acid(TUDCA),a natural bile acid,offers additional health benefits beyond liver ***,we show that TUDCA extends the lifespan and healthspan of ***,oral supplementation of TUDCA improves fitness in old mice,including clinically relevant phenotypes,exercise capacity and cognitive ***,TUDCA treatment drives broad transcriptional changes correlated with anti-aging ***,we discover that TUDCA targets the chaperone HSP90 to promote its protein refolding *** collaboration further alleviates aging-induced endoplasmic reticulum(ER)stress and facilitates protein homeostasis,thus offering resistance to *** summary,our findings uncover new molecular links between an endogenous metabolite and protein homeostasis,and propose a novel anti-aging strategy that could improve both lifespan and healthspan.

关键词： tauroursodeoxycholic acid lifespan healthspan protein homeostasis

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

Versatile chiroptical induction/manipulation through specific solvation of ion pairs by alcohols

引用

Science China Chemistry 2025年第2期68卷 610-621页

作者： Chunhong Liu Xin Chen Yanling Shen Ting Zhao Dayang Zhou Kun Li Jiecheng Ji Wanhua Wu Xuemei Pu Cheng Yang Key Laboratory of Green Chemistry&Technology of Ministry of Education Sichuan UniversityChengdu 610064China Comprehensive analysis center ISIROsaka UniversityOsaka 565-0871Japan

While extensive research has explored manipulating supramolecular chirality through internal and external factors,the specific solvation effect remains uncharted *** study synthesized ortho-functionalized pillar[5]arene(P[5])derivatives Mn and Dn via thiol-Michael addition,characterizing them through spectroscopic and X-ray single-crystal *** and Dn interacted with chiral amines,yielding significant circular dichroism(CD)***,the chiral induction exhibited pronounced specific solvation effects,where achiral alcohols either enhanced,attenuated,or reversed CD *** over 40 alcohols revealed correlations between the specific solvation effects and alcohol polarity and *** dynamics simulations unveiled that the alcohol interacted distinctly through hydrogen bonding,with one ion pair bonding up to four alcohol *** Rp-and Sp-preference of the P[5]core could be altered by the number of bonded *** work uncovers the critical role of alcohol-specific solvation in ion pair-involved chiral assembly,pertinent for asymmetric ion-pairing catalysis and the use of alcohol additives in organic solvents.

关键词： chiroptical induction specific solvation ion pair pillararene H-bond

来源：

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

Facile and gram-scale synthesis of single-crystal hydrogen-bonded organic frameworks as iodine adsorbents for synthesis of β-iodoethers

引用

Science China Chemistry 2025年

作者： Zhiye Zheng Qiuyuan Lin Shunfeng Peng Yuxuan Zhang Shuting Xu Hui Zhang Hongyu Wang Department of Chemistry College of Science Center for Supramolecular Chemistry & Catalysis Shanghai University Laboratory for Microstructures Instrumental Analysis and Research Center Shanghai University

The facile synthesis of single-crystal hydrogen-bonded organic frameworks（HOFs） on a gram scale remains a significant challenge but is crucial for practical applications. Herein, we report a novel strategy to prepare two three-dimensional（3D）single-crystal HOFs at ambient temperature and pressure with gram-scale products. The imine-linked oligomers were synthesized using ionic liquids as catalysts, which self-assembled in situ to form large single crystals. The optimal material, H1,exhibited iodine uptake capacities of 6.02 and 4.44 g g-1from vapor and aqueous solutions, respectively, ranking among the highest reported HOFs. For the first time, the iodine-adsorbed H1 was used as an iodine source for synthesizing β-iodoethers,achieving excellent yields comparable to those obtained using iodine as the reactant. This study not only presents a simple method for the scalable synthesis of single-crystal HOFs but also explores a potential application of iodine-adsorbed materials in organic synthesis.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

RGS22 maintains the physiological function of ependymal cells to prevent hydrocephalus

引用

Science China(Life Sciences) 2025年第2期68卷 441-453页

作者： Xue Pang Lin Gu Qiu-Ying Han Jia-Qing Xing Ming Zhao Shao-Yi Huang Jun-Xi Yi Jie Pan Hao Hong Wen Xue Xue-Qing Zhou Zhi-Hui Su Xin-Ran Zhang Li-Ming Sun Shao-Zhen Jiang Dan Luo Ling Chen Zheng-Jie Wang Yu Yu Tian Xia Xue-Min Zhang Ai-Ling Li Tao Zhou Hong Cai Tao Li Nanhu Laboratory National Center of Biomedical AnalysisBeijing 100039China School of Basic Medical Sciences Fudan UniversityShanghai 200032China Department of Basic Medical Sciences School of MedicineTsinghua UniversityBeijing 100084China

Ependymal cells line the wall of cerebral ventricles and ensure the unidirectional cerebrospinal fluid(CSF)flow by beating their motile cilia *** ependymal denudation or ciliary dysfunction causes ***,we report that the deficiency of regulator of Gprotein signaling 22(RGS22)results in severe congenital hydrocephalus in both mice and ***,RGS22 is specifically expressed in ependymal cells within the *** conditional knock-out mice,we further demonstrate that the deletion of Rgs22 exclusively in nervous system is sufficient to induce ***,we show that Rgs22 deficiency leads to the ependymal denudation and impaired *** phenomenon can be attributed to the excessive activation of lysophosphatidic acid receptor(LPAR)signaling under Rgs22^(-/-)condition,as the LPAR blockade effectively alleviates hydrocephalus in Rgs22^(-/-)***,our findings unveil a previously unrecognized role of RGS22 in the central nervous system,and present RGS22 as a potential diagnostic and therapeutic target for hydrocephalus.

关键词： RGS22 hydrocephalus ependymal cells

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

Efficient catalysis of FeNiCu-based multi-site alloys on magnesium-hydride for solid-state hydrogen storage

引用

Chinese Chemical Letters 2025年第1期36卷 603-609页

作者： Shuai Li Liuting Zhang Fuying Wu Yiqun Jiang Xuebin Yu School of Energy and Power Instrumental Analysis CenterJiangsu University of Science and TechnologyZhenjiang 212003China Department of Materials Science Fudan UniversityShanghai 200433China Max Planck Institute for Iron Research Düsseldorf 40237Germany

Hydrogen,as a cheap,clean,and cost-effective secondary energy source,performs an essential role in optimizing today’s energy *** hydride(Mg H_(2))represents an attractive hydrogen carrier for storage and transportation,however,the kinetic behavior and operating temperature remain *** this work,a dual-phase multi-site alloy(Ms A)anchored on carbon substrates was designed,and its superior catalytic effects on the hydrogen storage properties of MgH_(2) were *** analysis identified that multi-site Fe Ni_(3)/Ni Cu nanoalloys synergistically served as intrinsic drivers for the striking de/hydrogenation performance of the MgH_(2)-Ms A ***,the unique multi-metallic site structure attached to the surface of MgH_(2)provided substantial reversible channels and accessible active sites conducive to the adsorption,activation,and nucleation of H *** addition,the coupling system formed by FeNi_(3) and NiCu dual-phase alloys further enhanced the reactivity between Mg/MgH_(2) and H ***,the onset dehydrogenation temperature of Mg H_(2)+5 wt%Ms A was reduced to 195℃ and the hydrogen desorption apparent activation energy was reduced to 83.6 k J/mol.5.08 wt%H_(2) could be released at 250℃ in 20 min,reaching a high dehydrogenation rate of 0.254 wt%H_(2)/min,yet that for MgH_(2) at a higher temperature of 335℃ was only 0.145 wt%H_(2)/***,the dehydrogenated Mg H_(2)-Ms A sample could absorb hydrogen from room temperature(30℃)and charge 3.93 wt%H_(2) at 100℃ within20 min under 3.0 MPa H_(2) *** from carbon substrates,the 5 wt%Ms A doped-MgH_(2) could still maintain 6.36 wt%hydrogen capacity after 20 *** conclusion,this work provides experimental rationale and new insights for the design of efficient catalysts for magnesium-based solid-state hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride Synergistic effect Catalysis Multi-site alloys

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

Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H_(2)O_(2) synthesis coupled with biomass valorization

引用

Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang Pan Yihuang Chen Qiong Liu College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035ZhejiangChina Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology(China) Institute of AnalysisGuangdong Academy of Sciences(China National Analytical CenterGuangzhou)Guangzhou 510070GuangdongChina

Photocatalytic oxygen reduction for hydrogen peroxide(H_(2)O_(2))synthesis presents a green and costeffective production ***,achieving highly selective H_(2)O_(2)synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H_(2)O_(2)and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride(CNRb).The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h^(-1)for H_(2)O_(2)generation and photooxidation rate of 3.75 mM h^(-1)for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion(SCC)efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H_(2)O_(2)coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Photocatalytic H_(2)O_(2)synthesis Rubidium atom coordination Biomass valorization

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

Emission characteristics,environmental impacts and health risk assessment of volatile organic compounds from the typical chemical industry in China

引用

Journal of Environmental Sciences 2025年第3期149卷 113-125页

作者： Kaitao Chen Xin Gu Min Cai Weicheng Zhao Boxuan Wang Haoran Yang Xingang Liu Xingru Li analysis and Testing center Department of ChemistryCapital Normal UniversityBeijing 100048China College of Resources Environment and Tourism Capital Normal UniversityBeijing 100048China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China

To study the volatile organic compounds(VOCs)emission characteristics of industrial enterprises in China,6 typical chemical industries in Yuncheng City were selected as research objects,including the modern coal chemical industry(MCC),pharmaceutical industry(PM),pesticide industry(PE),coking industry(CO)and organic chemical industry(OC).The chemical composition of 91 VOCs was quantitatively *** results showed that the emission concentration of VOCs in the chemical industry ranged from 1.16 to 155.59 mg/m^(3).Alkanes were the main emission components of MCC(62.0%),PE(55.1%),and OC(58.5%).Alkenes(46.5%)were important components of PM,followed by alkanes(23.8%)and oxygenated volatile organic compounds(OVOCs)(21.2%).Halocarbons(8.6%-71.1%),OVOCs(9.7%-37.6%)and alkanes(11.2%-27.0%)were characteristic components of *** largest contributor to OFP was alkenes(0.6%-81.7%),followed by alkanes(9.3%-45.9%),and the lowest onewas alkyne(0%-0.5%).Aromatics(66.9%-85.4%)were the largest contributing components to SOA generation,followed by alkanes(2.6%-28.5%),and the lowest one was alkenes(0%-4.1%).Ethylene and BTEX were the key active species in various chemical *** human health risk assessment showed workers long-term exposed to the air in the chemical industrial zone had a high cancer and non-cancer risk during work,and BTEX and dichloromethane were the largest contributors.

关键词： Industrial enterprise VOCs spectrum Reactivity Health risk

来源：

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

Polydopamine-modified biochar supported polylactic acid and zero-valent iron affects the functional microbial community structure for 1,1,1-trichloroethane removal in simulated groundwater

引用

Chinese Chemical Letters 2025年第1期36卷 420-426页

作者： Haitao Yin Liang Meng Li Li Jiamu Xiao Longrui Liang Nannan Huang Yansong Shi Angang Zhao Jingwen Hou School of Environmental and Geographical Sciences Shanghai Normal UniversityShanghai 200234China Yangtze River Delta Urban Wetland Ecosystem National Field Scientific Observation and Research Station Shanghai 201722China Instrumental analysis center Shanghai Jiao Tong UniversityShanghai 200240China

In-situ enhanced bioreduction by functional materials is a cost-effective technology to remove chlorinated hydrocarbons in ***,a novel polydopamine(PDA)-modified biochar(BC)-based composite containing nanoscale zero-valent iron(n ZVI)and poly-l-lactic acid(PLLA)(PB-PDA-Fe)was synthesized to enhance the removal of 1,1,1-trichloroethane(1,1,1-TCA)in simulated groundwater with actual site *** impact on functional microbial community structure in system was also *** typical characterizations revealed uniform dispersion of PLA and n ZVI particles on the BC surface,being smoother after PDA *** composite exhibited a significantly higher performance on 1,1,1-TCA removal(82.38%,initial concentration 100 mg/L)than Fe-PDA and PB-PDA *** diversity and richness of the microbial community in the composite treatment consistently decreased during incubation due to a synergistic effect between PLLA-BC and n ***,Pedobacter,Sphaerochaeta,Shewanella,and Clostridium were identified as enriched genera by the composite through DNA-stable isotope probing(DNA-SIP),playing a crucial role in the bioreductive dechlorination *** the above results demonstrate that this novel composite selectively enhances the activity of microorganisms with extracellular respiration functions to efficiently dechlorinate 1,1,*** findings could contribute to understanding the responsive microbial community by carbon-iron composites and expedite the application of in-situ enhanced bioreduction for effective remediation of chlorinated hydrocarbon-contaminated groundwater.

关键词： Biochar-based composite Bioreductive dechlorination 1,1,1-TCA Extracellular respiration microorganisms Groundwater

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：