检索结果-南通市图书馆

Dual-ion pre-inserted Mo glycerate template for constructing NiMo-OS core–shell structure with boosting performance in zinc ions hybrid supercapacitors

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 6922-6932页

作者： Shujing Chen Zhengpeng Xiang Zhenyu Xiao Kun-Peng Wang Qi Zhang Lei Wang State Key Laboratory base of Eco-Chemical Engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China

Zinc ion hybrid supercapacitors(ZHS)have received much attention due to the enhanced potential window range and high specific ***,the appropriate positive materials with high electrochemical performance are still a ***,NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres are synthesized and serve as the template to form NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)by sulfurization *** with the product using traditional MoG as a template,N-NiMo-OS/NF inheriting a larger core structure from N-MoG delivers enhanced space for ions transport and volume expansion during the energy storage process,together with the synergistic effects of multi-components and the heterostructure,the as-prepared N-NiMo-OS/NF nanoflower exhibits excellent performance for the battery-type hybrid supercapacitors(BHS)and ZHS ***,the ZHS device delivers superior electrochemical performance to the BHS device,such as a higher specific capacity of 327.5 mAh·g^(−1)at 1 A·g^(−1),a preeminent energy density of 610.6 Wh·kg^(−1)at 1710 W·kg^(−1),long cycle *** in-situ Raman,ex-situ X-ray photoelectron spectroscopy(XPS),theoretical calculation demonstrate the extra Zn^(2+)insertion/extraction storage mechanism provides enhanced electrochemical performance for ZHS ***,the dual-ion pre-inserted strategy can be extended for other advanced electrode materials in energy storage fields.

关键词： NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)nanoflower battery-type hybrid supercapacitors zinc ions hybrid supercapacitors

Reducing defect of inorganic perovskite film by sulphur-containing Lewis base for robust photodetectors

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

Journal of Energy Chemistry 2021年第10期30卷 163-169,I0005页

作者： Jian Du Jialong Duan Xiya Yang Qingwei Zhou Yanyan Duan Tingting Zhang Qunwei Tang Institute of New Energy technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632GuangdongChina State Centre for international cooperation on Designer Low-Carbon and Environmental Material(SCICDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001HenanChina guangdong provincial Key Laboratory of Development and Education for Special Needs Children Lingnan Normal UniversityZhanjiang 524048GuangdongChina

Sluggish charge transfer in perovskite film induced by inherent defects such as uncoordinated Pb2+undoubtedly hinders the rapid response of self-powered photovoltaic-typed *** on interaction between Lewis acids and bases,herein,we employ thiourea molecule as a multifunctional Lewis base to significantly improve the quality of all-inorganic CsPbIBr2 perovskite *** careful characterizations,the quality of perovskite film has been well *** from the reduced defect and the reinforced the interfacial charge extraction owing to the strong interaction between uncoordinated Pb2+ions and the-C=S groups in thiourea and the formation of hydrogen bond at perovskite/TiO_(2) interface,an enhanced responsivity of 0.335 A W-1 and specific detectivity of 3.92×10^(12) Jones has been achieved for the self-powered,carbon-electrode based photodetector,which is comparable to the state-of-theart device based on CsPbIBr2 *** importantly,the device free of encapsulation remains 82.8%of initial performance after storage over 56 days in ambient atmosphere,promoting the practical deployment of perovskite products.

关键词： All-inorganic perovskite Self-powered photodetector Defect passivation Charge transfer Stability

Densification and anticorrosion performances of vacuum evaporated aluminium coatings on NdFeB magnets

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2021年第10期39卷 1238-1245,I0003页

作者： Jun Huang Qing Liu Zhenyu Yang Guangqing Xu Pengjie Zhang Jun Lv Wei Sun Bingshan Li Dongmei Wang Yucheng Wu School of Materials science and Engineering Hefei University of TechnologyHefei 230009China China international S&T cooperation base for Advanced Energy and Environmental Materials Hefei University of TechnologyHefei 230009China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Anhui Provincial International S&T Cooperation Base for Advanced Energy MaterialsHefei University of TechnologyHefei 230009China BGRIMM technology Group Co. Ltd.Beijing 102600China National Engineering Research Center for Magnetic Materials Beijing 102600China

Al coated NdFeB magnets obtained by vacuum evaporation technique were densified by high energy ball milling *** surface morphology,metal composition and micro structure of the coatings were characterized by scanning electron microscopy,X-ray diffraction and X-ray photoelectron spectroscopy,*** anticorrosive properties were investigated by potentiodynamic polarization curves and neutral salt spray *** pores in the Al coatings of columnar crystals(Al) induced by the evaporation technique,were apparently filled in the following ball milling process,leading to the densification of Al coatings and the evident improvement of the anticorrosive *** treated with ball milling for 30 min,the sample achieves the best anticorrosive performances with the self-corrosion potential of-0.87 V,self-corrosion current density of 1.65 μA/cm^(2) and the neutral salt spray(NSS) time of 144 h(red rust).The improvement of the anticorro sive performances of vacuum evaporated Al coating mainly lies in the densification effect of the coating,which depends on different loading conditions of ball milling process.

关键词： Sintered NdFeB magnet Al coating Anticorrosive performances Vacuum evaporation Densification Rare earths

Rare earth passivation and corrosion resistance of zinc coated NdFeB magnets

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2022年第2期40卷 302-308,I0005页

作者： Jing Chen Hongyi Yang Guangqing Xu Pengjie Zhang Jun Lv Wei Sun Bingshan Lidi Jun Huang Dongmei Wang Xia Shu Yucheng Wu School of Materials science and Engineering.Hefei University of technology Hefei 230009China China international S&T cooperation base for Advanced Energy and Environmental Materials Hefei University of TechnologyHefei 230009China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Anhui Provincial International S&T Cooperation Base for Advanced Energy MaterialsHefei University of TechnologyHefei 230009China BGRIMM technology Group Co. Ltd.Beijing 102600China National Engineering Research Center for Magnetic Materials Beijing 102600China

Rare earth passivation was conducted on Zn coated NdFeB magnets by chemical reaction to enhance the corrosion resistance ***,micro structures and compositions of different passivated coatings were studied by X-ray diffraction,field emission scanning electron microscopy,and X-ray photoelectron spectroscopy,*** corrosion behavior was evaluated by electrochemical measurement and neutral salt spray *** results show that the rare earth passivation can enhance the corrosion resistance of Zn coated NdFeB *** the concentration of cerium nitrate is 5 g/L,the passivated specimens can achieve the longest NSS time of 360 h,which is 144 h longer than that of the pristine Zn/NdFeB *** passivation layer on the Zn coating surface contributes to the enhancement of the magnets’corrosion resistance.

关键词： Sintered NdFeB magnets Rare earth passivation Zn coating Electroplating Corrosion resistance

Effects of counter-current driven by electron cyclotron waves on neoclassical tearing mode suppression

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第5期33卷 501-509页

作者：高钦郑平卫 School of Resource Environment and Safety Engineering University of South ChinaHengyang 421001China Demonstration base for international science and technology cooperation on Nuclear Energy and Nuclear Safety University of South ChinaHengyang 421001China

Through theoretical analysis,we construct a physical model that includes the influence of counter-external driven current opposite to the plasma current direction in the neoclassical tearing mode(NTM).The equation is used with this model to obtain the modified Rutherford equation with co-current and counter-current *** with the reported experimental results,numerical simulations have shown that the localized counter external current can only partially suppress NTM when it is far from the resonant magnetic *** some circumstances,the Ohkawa mechanism dominated current drive(OKCD)by electron cyclotron waves can concurrently create both co-current and *** this instance,the minimal electron cyclotron wave power that suppresses a particular NTM was calculated by the Rutherford *** result is marginally less than when taking co-current alone into *** a result,to suppress NTM using OKCD,one only needs to align the co-current with a greater OKCD peak well with the resonant magnetic *** effect of its lower counter-current does not need to be considered because the location of the counter-current deviates greatly from the resonant magnetic surface.

关键词： driven current neoclassical tearing mode modified Rutherford equation electron cyclotron waves

Fluorescent probes for glucolipid metabolism of bacterial cell wall

在线全文

学校读者我要写书评

暂无评论

Green Chemical Engineering 2023年第4期4卷 417-426页

作者： Yurou Huang Xiaoxie Ma Caimin Gao Yuan Xie Mingqiang Qiu Jun Yin Key Laboratory of Pesticide and Chemical Biology Ministry of EducationHubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisInternational Joint Research Center for Intelligent Biosensing Technology and HealthCollege of ChemistryCentral China Normal UniversityWuhan430079China guangdong provincial Key Laboratory of Radioactive and Rare Resource Utilization Shaoguan512026China

Cell wall is a basic component of bacteria that promotes bacteria to adapt the complicated environment as well as play an essential role in antimicrobial *** structure of bacterial cell wall is remarkably rich,and some complex components,such as peptidoglycan,lipopolysaccharide,and peptidoglycan-arabinogalactan et al.,can only be found in ***,the biosynthesis and transfer of these glycolipids are indispensable for bacteria during cell *** the process of biosynthesis and transfer are generally associated with metabolism and sophisticated enzyme ***,how the metabolic process takes place,what role enzymes play in this process and how they function have been major concerns for scientists in this *** significant progresses on fluorescent probes and biological imaging bring opportunity for the studying of metabolism and enzyme mechanisms recently due to its non-invasive and high *** this review,we focused on metabolic fluorescent probes for the detection of glycolipids in bacterial cell wall and highlighted the involving mechanisms and biological application.

关键词： Fluorescent probes Bacteria Cell wall Glucolipid metabolism

L-GrAFT_(7) has High Accuracy in Predicting Early Allograft Failure after Liver Transplantation: A Multicenter Cohort Study in China

在线全文

学校读者我要写书评

暂无评论

Journal of Clinical and Translational Hepatology 2024年第1期12卷 62-69页

作者： Songming Li Qijie Luo Shirui Chen Zehua Jia Tielong Wang Xinyu Yu Wenjing Wang YuyiZhang Jiaxing Zhu Feiwen Deng Qiang Sun Zhiyong Guo Xiaoshun He Organ Transplant Center The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongChina guangdong provincial Key Laboratory of Organ Donation and Transplant Immunology GuangzhouGuangdongChina guangdong provincial international cooperation base of science and technology GuangzhouGuangdongChina NHC Key Laboratory of Assisted Circulation(Sun Yat-sen University) GuangzhouGuangdongChina General Surgery Dept.1 Zhongshan People’s HospitalZhongshan Hospital of Sun Yat-Sen UniversityZhongshanGuangdongChina Department of Hepatobiliary Surgery The First People’s Hospital of FoshanFoshanGuangdongChina

Background and Aims:Increasing utilization of extended criteria donor leads to an increasing rate of early allograft failure after liver ***,consensus of definition of early allograft failure is ***:A retrospective,multicenter study was performed to validate the Liver Graft Assessment Following Transplantation(L-GrAFT)risk model in a Chinese cohort of 942 adult patients undergoing primary liver transplantation at three Chinese centers.L-GrAFT(L-GrAFT7 and L-GrAFT10)was compared with existing models:the Early Allograft Failure Simplified Estimation(EASE)score,the model of early allograft function(MEAF),and the Early Allograft Dysfunction(EAD)*** and multivariate logistic regression were used to find risk factors of L-GrAFT high-risk ***:L-GrAFT7 had an area under the curve of 0.85 in predicting 90-day graft survival,significantly superior to MEAF[area under the curve(AUC=0.78,p=0.044)]and EAD(AUC=0.78,p=0.006),while there was no statistical significance between the predicting abilities of L-GrAFT7 and EASE(AUC=0.84,p>0.05).Furthermore,L-GrAFT7 maintains good predicting ability in the subgroup of high-donor risk index(DRI)cases(AUC=0.83 ***,p=0.007 ***,p=0.014)and recipients of donors after cardiac death(AUC=0.92 ***,p<0.001).Through multivariate analysis,pretransplant bilirubin level,units of packed red blood cells,and the DRI score were selected as independent risk factors of a L-GrAFT7 high-risk ***:The accuracy of L-GrAFT7 in predicting early allograft failure was validated in a Chinese multicenter cohort,indicating that it has the potential to become an accurate endpoint of clinical practice and transitional study of machine perfusion.

关键词： Early allograft failure Graft survival Liver transplantation Risk prediction model Multicenter study

Entanglement properties of superconducting qubits coupled to a semi-infinite transmission line

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

Chinese Physics B 2023年第6期32卷 127-134页

作者：郭羊青陈平形李剑 Department of Physics National University of Defense TechnologyChangsha 410073China Shenzhen Institute for Quantum science and Engineering Southern University of Science and TechnologyShenzhen 518055China international Quantum Academy Shenzhen 518048China guangdong provincial Key Laboratory of Quantum science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Quantum entanglement, a key resource in quantum information processing, is reduced by interaction between the quantum system concerned and its unavoidable noisy environment. Therefore it is of particular importance to study the dynamical properties of entanglement in open quantum systems. In this work, we mainly focus on two qubits coupled to an adjustable environment, namely a semi-infinite transmission line. The two qubits' relaxations, through individual channels or collective channel or both, can be adjusted by the qubits' transition frequencies. We examine entanglement dynamics in this model system with initial Werner state, and show that the phenomena of entanglement sudden death and revival can be observed. Due to the hardness of preparing the Werner state experimentally, we introduce a new type of entangled state called pseudo-Werner state, which preserves as much entangling property as the Werner state, and more importantly,it is experiment friendly. Furthermore, we provide detailed procedures for generating pseudo-Werner state and studying entanglement dynamics with it, which can be straightforwardly implemented in a superconducting waveguide quantum electrodynamics system.

关键词： superconducting qubits quantum entanglement Werner state

Corrosion and impact-abrasion-corrosion behaviors of quenching- tempering martensitic Fe-Cr alloy steels

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research international 2022年第11期29卷 1853-1863页

作者： Zhi-bin Zheng Jun Long Yi Guo Hui Li Kai-hong Zheng Yan-xin Qiao Institute of New Materials Guangdong Academy of SciencesGuangdong Provincial Key Laboratory of Metal Toughening Technology and ApplicationGuangzhou 510650GuangdongChina guangdong provincial Iron Matrix Composite Engineering Research Center Guangzhou 510650GuangdongChina Jiangmen Guangjin Casting and Forging Co. Ltd.Jiangmen 529000GuangdongChina School of Materials science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina

The corrosion and impact-abrasion-corrosion behaviors of quenching-tempering Fe-Cr martensitic steels for ball mill liner were investigated in the corrosive slurry of a copper mine compared with high manganese *** is found that the corrosion resistance and the protectiveness of the passive film of Fe-Cr martensitic steels became worse when the carbon content *** quenching-tempering Fe-Cr martensitic steel showed better impact-abrasion-corrosion resistance in the corrosive slurry compared with the high manganese steel,especially the alloy steel with the carbon content of 0.3 wt.%.The synergistic effect between mechanics and corrosion has also been analyzed to further reveal the impact-abrasion-corrosion mechanism of the *** damage from pure mechanics accounted for the largest percentage(over 65%)for all steels,demonstrating that mechanical damage played the most important role in the impact-abrasion-corrosion behaviors of the *** impact and cracking resistance of the steel should also be paid special attention during the development of new materials for ball mill liner.

关键词： Mining Abrasive wear Corrosive wear Impact wear Martensitic steel