期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到41,975篇文章
< 1 2 … 250 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Copper and cuproptosis:mechanisms,biology,and roles in disease 认领 引用
1
作者 Fudi Wang WenYe Liu +11 位作者 Cong Tao Liyun Chen Ningjun Ni Liujing Huang Yueyang Ouyang QianQian Shi Dandan Wu Chenghua Li Liwei Xie Yanfang Wang Junxia Min Jing-Xia Liu 《Science Bulletin》 SCIE EI CAS CSCD 2026年第12期3136-3157,共22页
Copper,an evolutionarily conserved redox-active trace element,serves as an irreplaceable core pillar of eukaryotic life-orchestrating cuproenzyme catalysis,metabolic signaling networks,and organelle homeostasis across... Copper,an evolutionarily conserved redox-active trace element,serves as an irreplaceable core pillar of eukaryotic life-orchestrating cuproenzyme catalysis,metabolic signaling networks,and organelle homeostasis across molecule-to-organism scales.Its strict homeostasis is a prerequisite for physiological function,and its dysregulation is a hallmark of diverse pathologies.The discovery of cuproptosis-a distinct mitochondria-centric programmed cell death-has fundamentally upended traditional paradigms of metal-mediated cytotoxicity.Cuprology,serves as an integrative interdisciplinary framework to unify copper's spatiotemporal regulation across biological hierarchies.This inherent duality governs health and disease:physiological copper sustains developmental metabolism and redox balance,while deficiency or overload drives pathogenesis spanning metabolic disorders,neurodegeneration,and cancer.Integrating foundational mechanistic insights with cutting-edge translational breakthroughs-from copper ionophores to nano-carrier-mediated precision delivery.This review synthesizes the intricate crosstalk between copper homeostasis,cuproptosis circuitry,and cellular metabolism under the Cuprology framework.It further charts a clear roadmap for targeting copper-cuproptosis axes,unlocking transformative therapeutic strategies for recalcitrant diseases and steering a new era of research into cell death and metabolic regulation. 展开更多
关键词 Copper Copper homeostasis Cuproptosis Cuprology
暂未订购 下载PDF
Advances in organoelectrochemical copper-catalyzed reactions 认领 引用
2
作者 Pan Zhou Ting Zou +2 位作者 Hong-Jian Song Yu-Xiu Liu Qing-Min Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期25-38,共14页
The combination of electrochemistry and metal catalysts has been a popular research topic in the field of organic synthesis due to the abundance and controllable valence states of transition metals,where electron tran... The combination of electrochemistry and metal catalysts has been a popular research topic in the field of organic synthesis due to the abundance and controllable valence states of transition metals,where electron transfer at the electrode produces catalysts with more valence states.Among these transition metal catalysts,electrochemical conversions catalyzed by inexpensive copper metals have received considerable attention.This article systematically investigated this field and reviewed the electrochemical copper catalytic methods applied in organic synthesis from the different activation modes of substrates,which can be broadly classified into the functionalization of C=C bonds,C-H bond activation,C-C and C-X bond activation,and so on. 展开更多
关键词 Electrochemistry Transition metal catalysis Copper catalysis Copper electrocatalysis
暂未订购 下载PDF
Dissolution kinetics of a low-grade oxide-sulfide copper ore with high silica content:Laboratory studies and statistical modeling 认领 引用
3
作者 Hiva Farhadi Faramarz Doulati Ardejani +5 位作者 Sied Ziaedin Shafaei Tonkaboni Soroush Maghsoudy Roya Kafi Helia Tafakori Christoph Butscher Reza Taherdangkoo 《Acta Geochimica》 EI CAS CSCD 2026年第1期111-131,共21页
In this study,copper extraction from low-grade oxide-sulfide ores was investigated using a leaching method combined with response surface methodology(RSM)to optimize operational conditions and assess leaching kinetics... In this study,copper extraction from low-grade oxide-sulfide ores was investigated using a leaching method combined with response surface methodology(RSM)to optimize operational conditions and assess leaching kinetics.Given copper's extensive industrial applications,sustainable recovery from low-grade ores is critical.Five key parameters-acid concentration,leaching time,particle size,temperature,and solids percentage-were identified as major influences on copper recovery.The results revealed that leaching time and solids percentage,along with interactions between temperature-time and temperature-solids percentage,had the most significant effects.Optimal conditions for 80% copper recovery while minimizing iron recovery below 3% included an acid concentration of 1.21 mol L-1,a leaching time of 108 min,a particle size of 438μm,a temperature of 45℃,and a solids percentage of 18.2%.Leaching kinetics were analyzed using shrinking core models,with the Dickinson model best describing the process,showing an activation energy of 32.63 kJ mol-1,indicative of mixed diffusion and chemical reaction control.The final kinetic model effectively predicted the influence of key parameters.These findings highlight the importance of optimizing process variables and selecting suitable kinetic models to enhance extraction efficiency,reduce costs,and improve sustainability in copper recovery. 展开更多
关键词 Oxide-sulfi de ore Response surface methodology Kinetic analysis Miduk copper mine Shrinking core model Copper leaching
暂未订购 下载PDF
Efficient copper sorption from saline wastewater using citrate-modified biochar with robust anti-salt interferences 认领 引用
4
作者 Xianxin Luo Jianhao Xu +6 位作者 Qi Luo Yan Xiao Feng Wei Meitong Li Wenjiao Yuan Penghui Shao Shenglian Luo 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第5期639-644,共6页
Eliminating heavy metals from industrial high-salinity wastewater is imperative for sustainable industrial development and environmental protection.Herein,a citrate-modified biochar that demonstrated robust anti-salt ... Eliminating heavy metals from industrial high-salinity wastewater is imperative for sustainable industrial development and environmental protection.Herein,a citrate-modified biochar that demonstrated robust anti-salt interference was developed.The sorbent achieved an adsorption capacity of 252.14 mg/g in 4.1 mol/L Na Cl solution and 232.55 mg/g in 1.4 mol/L Na2SO4solution,maintaining efficient Cu(Ⅱ)adsorption over four cycles.It retained an adsorption capacity of 236.89 mg/g in real waste salt-derived brine.Adsorption followed pseudo-first-order kinetics(k=0.0901 min-1)and conformed to the Langmuir isotherm(qmax=251.21 mg/g)model,indicating that physical adsorption on a homogeneous surface primarily governs the adsorption mechanisms.Thermodynamic analysis revealed that the adsorption is spontaneous and endothermic,with enhanced affinity for Cu(Ⅱ)at higher temperatures.Oxygencontaining groups,especially the hydroxyl group,drove adsorption via surface precipitation/complexation,ultimately generating posnjakite(Cu4(SO4)(OH)6·2H2O).Cost analysis showed that the total expenditure for treating 1000 L of wastewater(300 mgCu/L)was$28.89($0.0963/gCu(Ⅱ))and the treatment capacity using fixed-bed columns was 120 L/kg.These findings offer a viable and cost-effective strategy for Cu(Ⅱ)elimination from high-salinity wastewater. 展开更多
关键词 Biochar Copper Adsorption Citrate modification High-salinity wastewater
暂未订购 下载PDF
Single-electron transfer enables enantioselective synthesis of spirooxindoles via dual copper and phosphoric acid catalysis 认领 引用
5
作者 Jun Shi Xueting Zhou +3 位作者 Bing-Qing Yang Biaobiao Jiang Wei Wu Hai Ren 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期517-521,共5页
The single-electron transfer-induced oxidative transformation of indoles has been extensively explored in recent years.However,research toward high enantioselective control in this reaction is rare.Herein,we report an... The single-electron transfer-induced oxidative transformation of indoles has been extensively explored in recent years.However,research toward high enantioselective control in this reaction is rare.Herein,we report an enantioselective catalytic single-electron transfer-induced oxidative rearrangement of cyclic indoles enabled by dual chiral copper/phosphoric acid catalysis.Using atmospheric oxygen(O2)as the terminal oxidant,the reactions of tetrahydro-β-carbolines,tetrahydropyrano[3,4-b]indoles and the challenging tetrahydrocarbazoles are all realized,providing diverse rearrangement products including pyrrolidinyl-,tetrahydrofuranyl-and cyclopentyl-bearing spiroindolinones in good yields with high enantioselectivities.The synthetic utility of this protocol was demonstrated in a concise synthesis of(+)-coerulescine and(+)-horsfiline.These findings would provide new insights and opportunities for future asymmetric oxidative radical reaction design. 展开更多
关键词 Spirooxindole Single-electron transfer Rearrangement Copper Dual catalysis
暂未订购 下载PDF
Copper ion-antibiotic complexation inhibits photochemical transformation of fluoroquinolones via electron redistribution and reactivity regulation 认领 引用
6
作者 Bo Gong Chang Xu +4 位作者 Shan Zhao Xiao-Min Sun Shu-Guang Wang Xian-Zheng Yuan Chao Song 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第4期584-592,共9页
The photochemical transformation of fluoroquinolones(FQs) represents a crucial environmental phenomenon eliciting growing concern. Nevertheless, the impact and mechanisms of ubiquitously coexisting copper ions, i.e.,... The photochemical transformation of fluoroquinolones(FQs) represents a crucial environmental phenomenon eliciting growing concern. Nevertheless, the impact and mechanisms of ubiquitously coexisting copper ions, i.e.,Cu(Ⅱ), remain elusive. Here, the role of Cu(Ⅱ) in the photochemical transformation of FQs was systematically investigated via experimental characterizations and theoretical simulations. Cu(Ⅱ) markedly inhibited the photolysis of levofloxacin(LEV), a representative FQs model, from 0.0078 to 0.0040 min-1 after a 100-min irradiation under simulated sunlight with the molar ratio of Cu(Ⅱ): LEV at 1:1. The micro-level mechanisms were explored, including the ligand-to-metal charge transfer in complexation, modifications to reactive sites and activities with various reactive species, and higher hole-electron separation extents. In addition, the triplet excited state, singlet oxygen, and hydroxyl radical in LEV and LEV-Cu(Ⅱ) with 1:1 molar ratio played pivotal roles in the transformation, contributing 20.77 %/20.02 %, 13.87 %/14.59 %, and 7.96 %/4.68 %, respectively. Furthermore, considering more FQs models, the inhibition of Cu(Ⅱ) on the transformation was found to universally exist in ciprofloxacin, enoxacin, enrofloxacin, norfloxacin, ofloxacin and pefloxacin, and their multiple molecular descriptors were changed with a same tendency. This work provides a comprehensive understanding of the transformation of antibiotics within complex aqueous matrices, contributing to further estimation of antibiotics removal and ecological risks. 展开更多
关键词 Fluoroquinolones Photochemical transformation Copper complexation Reactivity regulation Molecular mechanism
暂未订购 下载PDF
Effect of hydrogen sulfide on reductive leaching of chalcopyrite by copper 认领 引用
7
作者 Xin SUN Rui LIAO +5 位作者 Zu-chao PAN Yi-sheng ZHANG Mao-xin HONG Yan-sheng ZHANG Jun WANG Guan-zhou QIU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第1期287-297,共11页
A series of leaching and electrochemical experiments were conducted to elucidate the critical role of hydrogen sulfide(H2S)in copper-driven reduction of chalcopyrite.Results demonstrate that in the absence of H2... A series of leaching and electrochemical experiments were conducted to elucidate the critical role of hydrogen sulfide(H2S)in copper-driven reduction of chalcopyrite.Results demonstrate that in the absence of H2S,metallic copper converts chalcopyrite into bornite(Cu5FeS4).However,the introduction of H2S promotes the formation of chalcocite(Cu2S)by altering the oxidation pathway of copper.Electrochemical analysis demonstrates that the presence of H₂S significantly reduces the corrosion potential of copper from 0.251 to−0.223 V(vs SHE),reaching the threshold necessary for the formation of Cu2S.Nevertheless,excessive H2S triggers sulfate reduction via the reaction of 8Cu+H2SO4+3H2S=4Cu2S+4H2O(ΔG=−519.429 kJ/mol at 50℃),leading to inefficient copper utilization. 展开更多
关键词 chalcopyrite reduction copper hydrogen sulfide chalcocite
暂未订购 下载PDF
Experimental study on hydrogen explosion venting and flame arresting under different metal copper foam structures 认领 引用
8
作者 Tao Wang Wentao Jiang +3 位作者 Yuhuai Sheng Shangyong Zhou Fanyi Meng Zhenmin Luo 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期106-120,共15页
The safe transportation of hydrogen is significantly challenged by its inherent flammabilityand explosivity.Mitigating explosion risks in hydrogen pipelines constitutes the primary objective of this work.Utilizing an ... The safe transportation of hydrogen is significantly challenged by its inherent flammabilityand explosivity.Mitigating explosion risks in hydrogen pipelines constitutes the primary objective of this work.Utilizing an experimental platform for explosion venting and flame-arresting,hydrogen explosion experiments were conducted to examine the influenceof venting pressure,pores per inch(PPI),porosity,and copper foam thickness on peak explosion pressure and flame-arrestingperformance within a pipeline.Fluent numerical simulations were employed to validate structural differences in flame-arrestingmaterials,and the flame-arrestingmechanism was analyzed in conjunction with flow fieldcharacteristics.The results indicate that as the venting pressure increases,the amount of unburned gas entering the pipeline from the container decreases,causing the secondary pressure peak to disappear and reducing the difficultyof flamearresting.The failure mechanism of 20 mm thick copper foam flame-arrestingis divided into two types:the heat removal rate of the flame-arrestingmaterial and the collision consumption of active free radicals are insufficientto force the flameto quench(20 PPIƐ=96%)and the copper foam is damaged by the pressure wave in the pipeline,resulting in its loss of flame-arresting(60 PPIƐ=96%).On the premise that the flame-arrestingis successful,the larger the PPI,porosity,and thickness,the larger the inner cavity of the copper foam,which will enhance the pressure hindering and absorption effect,which will help the pipeline flame-arresting.This research elucidates the flame-arrestingmechanism under pressure wave flamecoupling,providing a foundational theory for the explosion venting design of industrial hydrogen storage containers. 展开更多
关键词 Metal copper foam Hydrogen Explosion venting Flame-arresting Numerical simulation
暂未订购 下载PDF
Tunable broadband luminescence in lead-free hybrid copper halides 认领 引用
9
作者 Yanyan Li Ali Azmy +8 位作者 Shunran Li Huiju Lee Benjamin T.Diroll Mircea Cotlet Lukasz Wojtas Yi Xia Ido Hadar Ioannis Spanopoulos Peijun Guo 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期362-369,共8页
Metal halides are an important class of optoelectronic materials combining exceptional optical and electronic properties.An inherent advantage of metal halides is their solution synthesis and processability,which rend... Metal halides are an important class of optoelectronic materials combining exceptional optical and electronic properties.An inherent advantage of metal halides is their solution synthesis and processability,which render them as low-cost and environmentally friendly materials for a range of applications from photovoltaics and photodetection to solid-state lighting(SSL).In this study,we synthesized three previously unreported lead-free organic–inorganic hybrid copper halides:(OA)4CuX5(X=Br,I;OA+ =C8H17NH3+ ,n-octylammonium cation)and(HA)2CuI3(HA+ =C6H13NH3+ ,n-hexylammonium cation),all of which exhibit broadband emissions arising from self-trapped excitons(STEs).Among these compounds,(OA)4CuI5 demonstrates tunable dual-band white-light emission with a high color rendering index value of 91 at room temperature.Temperature-dependent photoluminescence measurements and first-principles calculations reveal distinct behaviors between the two emission states in(OA)4CuI5.These findings highlight the potential of copper halide compounds for optoelectronic applications,particularly in the development of environmentally friendly solid-state lighting technologies. 展开更多
关键词 Lead-free Solid-state lighting Copper halides Self-trapped excitons
暂未订购 下载PDF
Physiological,biochemical and metabolomic analysis revealed the mechanism of selenium alleviating copper stress in Nicotiana tabacum L. 认领 引用
10
作者 Bingjie Yu Hang Wang +10 位作者 Mengze Li Kai Zhang Ye Xue Jiashu Tian Huanyu Teng Wuxing Huang Dan Han Bingjun Dang Zicheng Xu Jiayang Xu Wei Jia 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第7期387-398,共12页
Copper(Cu)contamination impairs crop performance.Selenium(Se),a beneficial element for plants,has been implicated in mitigating heavy-metal stress.However,the role of Se against Cu toxicity in tobacco(Nicotiana tabacu... Copper(Cu)contamination impairs crop performance.Selenium(Se),a beneficial element for plants,has been implicated in mitigating heavy-metal stress.However,the role of Se against Cu toxicity in tobacco(Nicotiana tabacum L.)remains incompletely characterized.Using Cu-stressed tobacco seedlings with Se supplementation,we show that excess Cu disrupted chloroplast structure,perturbed photorespiration,and interfered with chlorophyll biosynthesis and disrupted the Calvin–Benson cycle(including Ribulose-1,5-bisphosphate(RuBP)regeneration),thereby reducing photosynthetic efficiency.Se preserved chloroplast integrity and enhanced pigment synthesis,improving leaf photosynthetic performance.Se application also significantly decreased soil available Cu,which lowered plant Cu uptake and translocation,while concurrently promoting mineral nutrient acquisition.Moreover,Se modulated antioxidant defenses to mitigate oxidative damage and maintain cellular structure and function.At the metabolic level,Se appeared to confer Cu tolerance through regulation of glutathione metabolism and amino-acid pathways(notably histidine,arginine,and proline),accompanied by changes in glutamate,glutathione,and phosphoserine.Collectively,this study suggested that Se might alleviate Cu phytotoxicity through multiple,concerted pathways—including lowering soil-available Cu,reducing plant Cu uptake,safeguarding chloroplast/photosynthetic processes,and modulating antioxidant and amino-acid metabolism. 展开更多
关键词 Copper toxicity Selenium Tobacco Antioxidant system Substance metabolism
暂未订购 下载PDF
Effect of fluoride roasting on copper species transformation on chrysocolla surfaces and its role in enhanced sulfidation flotation 认领 引用
11
作者 Yingqiang Ma Xin Huang +5 位作者 Yafeng Fu Zhenguo Song Sen Luo Shuanglin Zheng Feng Rao Wanzhong Yin 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第1期165-176,共12页
It is difficult to recover chrysocolla from sulfidation flotation which is closely related to the mineral surface composition.In this study,the effects of fluoride roasting on the surface composition of chrysocolla we... It is difficult to recover chrysocolla from sulfidation flotation which is closely related to the mineral surface composition.In this study,the effects of fluoride roasting on the surface composition of chrysocolla were investigated,its impact on sulfidation flotation was explored,and the mechanisms involved in both fluoride roasting and sulfidation flotation were discussed.With CaF2as the roasting reagent,Na2S·9H2O as the sulfidation reagent,and sodium butyl xanthate(NaBX)as the collector,the results of the flotation experiments showed that fluoride roasting improved the floatability of chrysocolla,and the recovery rate increased from 16.87%to 82.74%.X-ray diffraction analysis revealed that after fluoride roasting,approximately all the Cu on the chrysocolla surface was exposed in the form of CuO,which could provide a basis for subsequent sulfidation flotation.The microscopy and elemental analyses revealed that large quantities of"pagoda-like"grains were observed on the sulfidation surface of the fluoride-roasted chrysocolla,indicating high crystallinity particles of copper sulfide.This suggests that the effect of sulfide formation on the chrysocolla surface was more pronounced.X-ray photoelectron spectroscopy revealed that fluoride roasting increased the relative contents of sulfur and copper on the surface and that both the Cu~+and polysulfide fractions on the surface of the minerals increased.This enhances the effect of sulfidation,which is conducive to flotation recovery.Therefore,fluoride roasting improved the effect of copper species transformation and sulfidation on the surface of chysocolla,promoted the adsorption of collectors,and improved the recovery of chrysocolla from sulfidation flotation. 展开更多
关键词 sulfidation flotation chrysocolla fluoride roasting copper species transformation enhanced sulfidation
暂未订购 下载PDF
A hypoxia-activated copper ion nanoexchanger for cancer immunotherapy by in situ precise production of immunogenic cell death inducer 认领 引用
12
作者 Xinlu Zhang Yongxin Liu +6 位作者 Huan Li Shutong Chen Guocheng Wang Xu Zhang Chen Cao Xiaoyuan Chen Sheng Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期636-642,共7页
In situ therapeutic agent production strategy is promising to overcome the drawbacks of direct drug delivery.Hypoxia provides a great target for precise treatment of tumor.Here we report a copper ion competition-based... In situ therapeutic agent production strategy is promising to overcome the drawbacks of direct drug delivery.Hypoxia provides a great target for precise treatment of tumor.Here we report a copper ion competition-based nanoparticle(NP) for hypoxia-activated formation of diethyldithiocarbamate(DTC)-copper complex,an immunogenic cell death(ICD) inducer.The NP is composed of an amphiphilic hypoxia-responsive DTC precursor and a fluorescence quenched copper ion-chelated squaric acid.In hypoxic tumor cells,the azobenzene linker in DTC precursor can be cleaved through bioreduction,leading to DTC release and subsequent copper ion exchange between DTC and squaric acid.Simultaneous formation of toxic DTC-copper complexes and fluorescence recovery will allow for visualization of in situ therapeutic agents production.Furthermore,the DTC-copper complexes can induce ICD and promote cytotoxic T lymphocyte infiltration for cancer immunotherapy.This study not only provides a promising hypoxiaactivated nanomedicine for precision cancer therapy,but also a visualization strategy for evaluating the treatment process. 展开更多
关键词 Precise therapy Hypoxia-responsive prodrug Immunotherapy Copper Reactive oxygen species
暂未订购 下载PDF
High-lipid diets exacerbate copper-induced hepatointestinal toxicity in yellow catfish(Pelteobagrus fulvidraco)via gut microbiota dysbiosis 认领 引用
13
作者 Lei Wang Heng Wang +2 位作者 Xuan Xue Chang Gao Yunzhi Yan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第6期729-740,共12页
Copper(Cu)-contained chemicals and high-lipid diets are commonly applied in aquaculture, both of them are capable of negatively affecting fish health via complicated mechanisms, yet their microbiota-mediated interacti... Copper(Cu)-contained chemicals and high-lipid diets are commonly applied in aquaculture, both of them are capable of negatively affecting fish health via complicated mechanisms, yet their microbiota-mediated interactions remain unclear. This study investigated their combined effects on yellow catfish(Pelteobagrus fulvidraco). A control(Con), high-lipid(HL), and HL + antibiotics(HLA, deplete intestinal microbiota) diets were fed fish for nine weeks, and half fish underwent acute Cu exposure(0.8 mg/L) during week nine(assigned as ConCu, HLCu,and HLACu, respectively). Results showed the HL feeding impaired growth but not Cu exposure. The HL and HLA groups showed exacerbated hepatic vacuolization, oxidative stress(reduced antioxidant enzymes, elevated malondialdehyde(MDA), and inflammation(upregulated tnfα, il1β, and nfκb expression). Cu exposure worsened these effects in all groups, further reducing intestinal villus length and tight junction genes(zo1 and occludin)expression while activating mitogen-activated protein kinase(MAPK)-related inflammation. Hepatic Cu accumulation followed HLACu > HLCu > ConCu(P < 0.05), linked to upregulated Cu transporters(ctr1 and ctr2) and metallothionein(mt2) expression. Microbiota analysis revealed high-lipid diet and Cu exposure caused microbiota dysbiosis, reducing Plesiomonas and Pseudomonas abundances, which amplified copper toxicity. This study demonstrates that high-lipid diets intensify Cu-induced hepatointestinal toxicity via oxidative and inflammatory pathways and microbiota dysbiosis, highlighting microbiome-driven Cu metabolism as a key mechanism in fish toxicity. 展开更多
关键词 High lipid diet Copper exposure Liver damage Intestinal microbiota
暂未订购 下载PDF
Melting Preparation for Tungsten-Doped Graphene/Copper Composites 认领 引用
14
作者 Yunzhong Wu Changsheng Xing +7 位作者 Tong Zhang Jiaxu Shuang Deyu Zhang Jie Li Miao Wang Jie Sheng Lidong Wang Weidong Fei 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期638-654,共17页
Melting production plays a pivotal role in the modern copper industry.However,applying this process to fabricate nanocarbon(e.g.,graphene,carbon nanotubes)-reinforced copper matrix composites has remained a long-stand... Melting production plays a pivotal role in the modern copper industry.However,applying this process to fabricate nanocarbon(e.g.,graphene,carbon nanotubes)-reinforced copper matrix composites has remained a long-standing challenge for nearly 2 decades.In this study,a melting preparation strategy for Graphene-Cu(Gr/Cu)composites was developed by introducing tungsten-doped graphene(W-Gr)into molten Cu,effectively improving the wettability and density compatibility between graphene(Gr)and molten Cu.The contact angle between W-Gr and molten Cu decreases to 80.4°,while the density of W-Gr increases to 9.5 g cm-3.W-Gr sheets containing 13 at%and 18 at%tungsten(designated as 13W-Gr and 18W-Gr)disperse uniformly within the Cu matrix.Thermodynamic analysis indicates that W-Gr can spontaneously disperse in molten Cu when the surface area fraction of WC on W-Gr exceeds 45.8%.The ultimate tensile strength(UTS)of 13W-Gr/Cu reaches 152 MPa in the as-cast state and 449 MPa after cold rolling.The electrical conductivity of 13W-Gr/Cu reaches 100.4%international annealed copper standard(IACS)at 20℃,and is 1.5%higher than that of pure Cu at 180℃.This work overcomes the challenges of fabricating Gr/Cu composites via the melting process,provides a viable approach for their large-scale industrial production. 展开更多
关键词 electrical conductivities graphene/copper composites melting preparation tungsten-doped graphene wettability
暂未订购 下载PDF
Aging of copper in vineyard topsoil:Use of isotopic labelling to distinguish freshly added copper from aged copper 认领 引用
15
作者 Jean-Yves CORNU Pierre EON +1 位作者 Frédéric CANDAUDAP Oleg S.POKROVSKY 《Pedosphere》 SCIE CAS CSCD 2026年第1期368-372,共5页
Dear Editor,The long-term use of copper(Cu)fungicides to prevent downy mildew of vine led to the accumulation of Cu in vineyard topsoils(Komárek et al.,2010;Droz et al.,2021),which may alter the functioning and s... Dear Editor,The long-term use of copper(Cu)fungicides to prevent downy mildew of vine led to the accumulation of Cu in vineyard topsoils(Komárek et al.,2010;Droz et al.,2021),which may alter the functioning and sustainability of vineyard ecosystems(Cornu et al.,2022). 展开更多
关键词 sustainability isotopic labelling downy mildew copper ecosystem functioning vineyard topsoil aging fungicides
暂未订购 下载PDF
High-Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium-Ion Batteries 认领 引用
16
作者 Yuyun Li Wanquan Yu +3 位作者 Haigang Dong Chenchen Li Qi Meng Peng Dong 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期447-460,共14页
The massive stockpiling of copper slag(CS)presents severe environmental and resource-waste challenges.Existing strategies for CS valorization typically yield low-value-added products.Herein,we propose an innovative hi... The massive stockpiling of copper slag(CS)presents severe environmental and resource-waste challenges.Existing strategies for CS valorization typically yield low-value-added products.Herein,we propose an innovative hierarchical regulation approach to transform CS into high-performance LiFePO4(LFP)cathode materials.The process involved alkali hydrolysis pretreatment followed by oxidative leaching with HNO3 and H2O2.This step selectively removed 71.6%of Si and 82.2%of Al impurities while enriching valuable metals,such as Zn(83.29%),Pb(57.10%),and Cu(73.60%),in the leachate.Subsequent thermodynamically guided coprecipitation and direct phosphation achieved complete Fe utilization and introduced trace Ti doping(0.28 wt%).The optimized LFP@1 and LFP@2 cathodes demonstrate exceptional electrochemical performance,exhibiting specific capacities of 108.19 and 128.21 mAh g-1 at 1C,respectively,while retaining over 97%capacity retention after 300 cycles.A comprehensive life cycle assessment confirms the environmental superiority of this process.This work successfully establishes a closed-loop strategy for CS upcycling and provides fundamental insights into impurity-phase regulation for valorizing iron-silicate-based wastes. 展开更多
关键词 copper slag hierarchical impurity regulation LiFePO4 resource utilization trace element conversion
暂未订购 下载PDF
Hydro-chemical performance of copper mine waste-based capillary barriers for acid mine drainage control in humid climates 认领 引用
17
作者 Longlong Meng Yixin Yang +9 位作者 Sheng Zhou Shunyu Wang Wenyuan Wang Rongjian Tan Linhan Wang Qiong Wang Xinyu Wu Aifang Du Qi Liu Bate Bate 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第6期4600-4616,共17页
Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with ... Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with high precipitation,where AMD risks are more severe.This study evaluated the hydro-chemical performance of two anti-seepage-enhanced triple-layer capillary barriers constructed from copper mine wastes,using rainfall simulation,sensor monitoring,and water balance analysis in a model box.An extreme rainfall event(354 mm over 24 h)followed by a 30-d drying period was simulated sequentially.The top two layers of Model Boxes Ⅰ and Ⅱ withstood 60-and 10-year return period rainfalls,respectively,while the bottom layers delayed percolation by 39.4 h and 81.4 h,respectively,after lateral drainage in the coarse-grained layer(CGL).Despite a significant increase in equivalent permeability at CGL breakthrough(e.g.from 9.9×10⁻¹²m/s to 9.3×10⁻¹⁰m/s in Model Box Ⅰ),stable infiltration and low permeability limited percolation to less than 2.5%of rainfall in both barriers.Based on effective particle size and thickness,two empirical relationships were developed to describe the peak capacity and cumulative release rate of the fine-grained layer.Furthermore,the pH and heavy-metal ion concentrations in the lateral drainage remained within standards throughout the 2184.0 h monitoring period,explained by inhibition of the oxidation reaction.In addition,compared to the untreated waste dump,the predicted runoff removal rates achieved by the barriers were 73.4%and 64.8%for Model Boxes Ⅰ and Ⅱ,respectively. 展开更多
关键词 Capillary barrier Copper mine wastes Acid mine drainage Hydro-chemical performance
暂未订购 下载PDF
Correction:Alternative Strategy for Development of Dielectric Calcium Copper Titanate-Based Electrolytes for Low-Temperature Solid Oxide Fuel Cells 认领 引用
18
作者 Sajid Rauf Muhammad Bilal Hanif +8 位作者 Zuhra Tayyab Matej Veis M.A.K.Yousaf Shah Naveed Mushtaq Dmitry Medvedev Yibin Tian Chen Xia Martin Motola Bin Zhu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第7期427-434,共8页
Correction to:Nano-Micro Letters(2025)17:13 http://gffzzd3cc09b8251d45dfsn5qpxbk9u05o6nou.ffgz.tsg.suse.edu.cn/10.1007/s40820-024-01523-0 Following publication of the original article[1],some errors were identified by the authors,which were not observed during proof r... Correction to:Nano-Micro Letters(2025)17:13 http://gffzzd3cc09b8251d45dfsn5qpxbk9u05o6nou.ffgz.tsg.suse.edu.cn/10.1007/s40820-024-01523-0 Following publication of the original article[1],some errors were identified by the authors,which were not observed during proof reading.·The authors have added additional scale values even in the presence of measured(real)scale bar and line resolution on SEM images to make them obvious on the real(raw)images presented in Fig.3(g-i)and similarly,in Fig.S7.However,they would like to have SEM images only with measured(real)scale bar and line resolution on real(raw)images in Fig.3(g-i)and Fig.S7 in order not to mislead the scientific society and the young researchers in this field. 展开更多
关键词 sem images dielectric electrolytes line resolution low temperature solid oxide fuel cells scale bar scale values proof reading calcium copper titanate
暂未订购 下载PDF
When copper turns killer:Decoding copper dyshomeostasis and cuproptosis in neurodegenerative pathogenesis and precision metal interventions 认领 引用
19
作者 Wei Du Tingyao Wu +1 位作者 Yonggang Fan Min Zhao 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第9期3964-3976,共13页
Copper is an essential cofactor for neuronal metabolism,enzymatic functions,and neurotransmission.However,copper dyshomeostasis-induced redox activity makes the brain vulnerable to oxidative and proteostatic stress.Cu... Copper is an essential cofactor for neuronal metabolism,enzymatic functions,and neurotransmission.However,copper dyshomeostasis-induced redox activity makes the brain vulnerable to oxidative and proteostatic stress.Cuproptosis,a recently characterized form of programmed cell death,is triggered by copper binding to lipoylated enzymes of the tricarboxylic acid cycle,resulting in proteotoxic stress,mitochondrial dysfunction,and cell death.Given that mitochondria are central to copper handling and the primary site of cuproptosis,we examine mitochondrial pathways and key cuproptosis-related genes.We also assess disease-specific signatures of copper imbalance.In Alzheimer's disease,excess copper binds to amyloid-β,promoting aggregation and neurotoxicity.In Parkinson's disease,copper-boundα-synuclein fosters aggregation,while copper-driven redox cycling elevates reactive oxygen species.Cuproptosis worsens mitochondrial vulnerability in Parkinson's disease and impairs cellular stress responses in Huntington's disease.In amyotrophic lateral sclerosis,superoxide dismutase 1-related defects compromise antioxidant defenses alongside copper-dependent mitochondrial dysfunction.In prion diseases,copper facilitates prion protein misfolding and toxicity.Across these disorders,common features include mitochondrial dysfunction and cuproptosis hallmarks—such as enhanced protein lipoylation,elevated reactive oxygen species,impaired electron transport chain activity,fragile Fe-S clusters,and increased reliance on the tricarboxylic acid cycle—which collectively increase neuronal susceptibility to copper dyshomeostasis.Clarifying and understanding the critical roles of copper metabolism not only elucidates the pathogenesis of neurodegenerative diseases but also offers alternative therapeutic strategies.This review uniquely integrates the mitochondria-centered cuproptosis axis with copper dyshomeostasis across Alzheimer's disease,Parkinson's disease,Huntington's disease,amyotrophic lateral sclerosis,and prion diseases,mapping convergent vulnerabilities to mechanism-grounded interventions and outlining testable translational routes. 展开更多
关键词 Alzheimer’s disease amyotrophic lateral sclerosis copper homeostasis cuproptosis Huntington’s disease mitochondrial dysfunction neurodegenerative disease Parkinson’s disease prion diseases
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 250 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈