检索结果-南通市图书馆

Synergistic Effect of Nitrogen/Phosphorus Co-Doping and Molybdenum Carbide Induced Electron Redistribution of Carbon Layer to Boost Hydrogen Evolution Reaction

引用

Chinese Journal of Chemistry 2024年第1期42卷 55-60页

作者： Jiamin Xiao peng Li yanyan Sun Heng Liu Javid Khan Handong Zhang Han Zhou Yaqiong Su Shuangyin Wang Lei Han College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangshaHunan 410082China School of Chemistry Engineering Research Center of Energy Storage Materials and Devices Ministry of EducationXi'an Key Laboratory of Sustainable Energy Materials ChemistryState Key Laboratory of Electrical Insulation and Power EquipmentXi'an Jiaotong UniversityXi'anShaanxi 710049China School of Materials Science and Engineering Central South UniversityChangshaHunan 410083China state Key Laboratory of Chem/Bio-Sensingand Chemometrics College of Chemistry and Chemical EngineeringHunan University ChangshaHunan 410082China Laboratory of Inorganic Materials and Catalysis Department of Chemical Engineering and ChemistryEindhoven University of Technology P.O.Box5135600 MB EindhovenThe Netherlands

The development of highly efficient non-precious-metal-based electrocatalysts for the hydrogen evolution reaction is imperative for promoting the large-scale application of electrochemical water splitting.Herein,nitrogen/phosphorus co-doped carbon nanorods encapsulated Mo_(2)C nanoparticles(Mo_(2)C@PNc)have been prepared by pre-phosphating treatment in combination of the coordination with polydopamine and the subsequent pyrolysis.The phosphating temperature has a significant effect on the content of phosphorus within the resultant Mo_(2)C@PNC,and the optimal catalyst delivers superior HER activity with the low overpotential of 104 mV at a current density of 10 mAcm^(-2) and good stability for 8 h,which has been theoretically demonstrated to originate from the synergistic effect between P doping and Mo_(2)C induced electron redistribution of nitrogen-doped carbon layer.

关键词： Molybdenum carbide N/P co-doped carbon Hydrogen evolution Synergistic effect Electron redistribution Comprehensive

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

Cellular metabolism: A key player in cancer ferroptosis

引用

Cancer Communications 2024年第2期44卷 185-204页

作者： Xianjie Jiang Qiu peng Mingjing peng Linda Oyang Honghan Wang Qiang Liu Xuemeng Xu Nayiyuan Wu Shiming Tan Wenjuan Yang Yaqian Han Jinguan Lin Longzheng Xia yanyan Tang Xia Luo Jie Dai Yujuan Zhou Qianjin Liao Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaHunanP.R.China Public Service Platform of Tumor Organoids Technology ChangshaHunanP.R.China Department of Head and Neck Surgery Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaHunanP.R.China Hengyang Medical School University of South ChinaHengyangHunanP.R.China

Cellular metabolism is the fundamental process by which cells maintain growth and self-renewal.It produces energy,furnishes raw materials,and intermedi-ates for biomolecule synthesis,and modulates enzyme activity to sustain normal cellular functions.Cellular metabolism is the foundation of cellular life processes and plays a regulatory role in various biological functions,including pro-grammed cell death.Ferroptosis is a recently discovered form of iron-dependent programmed cell death.The inhibition of ferroptosis plays a crucial role in tumorigenesis and tumor progression.However,the role of cellular metabolism,particularly glucose and amino acid metabolism,in cancer ferroptosis is not well understood.Here,we reviewed glucose,lipid,amino acid,iron and sele-nium metabolism involvement in cancer cell ferroptosis to elucidate the impact of different metabolic pathways on this process.Additionally,we provided a detailed overview of agents used to induce cancer ferroptosis.We explained that the metabolism of tumor cells plays a crucial role in maintaining intracellu-lar redox homeostasis and that disrupting the normal metabolic processes in these cells renders them more susceptible to iron-induced cell death,resulting in enhanced tumor cell killing.The combination of ferroptosis inducers and cel-lular metabolism inhibitors may be a novel approach to future cancer therapy and an important strategy to advance the development of treatments.

关键词： cancer therapy cellular metabolism ferroptosis inducer ferroptosis

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

Visual cognition of birds and its underlying neural mechanism:A review

引用

Avian Research 2022年第2期13卷 216-225页

作者： Xiaoke Niu Zhenyang Jiang yanyan peng Shuman Huang Zhizhong Wang Li Shi Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology School of Electrical EngineeringZhengzhou UniversityZhengzhou450001China Department of Automation Tsinghua UniversityBeijing100084China

Birds have acute vision and many remarkable visual cognition abilities,due to their unique living environment.The underlying neural mechanisms have also attracted interests of researchers in neuroscience.Here,we firstly summarize the visual cognition abilities of birds,and make a comparison with mammals.Secondly,the underlying neural mechanisms are presented,including histological structure of avian brain and visual pathways,typical experimental results and conclusions in electrochemistry and electrophysiology.The latter mainly focuses on several higher brain areas related to visual cognition,including mesopallium ventrolaterale,entopallium,visual Wulst,and nidopallium caudolaterale.Finally,we make a conclusion and provide a suggestion about future studies on revealing the neural mechanisms of avian visual cognition.This review presents a detailed understanding of avian visual cognition and would be helpful in ornithology studies in the field of cognitive neuroscience.

关键词： neural Visual cognition

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

Electronic origin of structural degradation in Li-rich transition metal oxides:The case of Li_(2)MnO_(3)and Li_(2)RuO_(3)

引用

Journal of Semiconductors 2024年第4期45卷 82-86页

作者： peng Zhang Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics andOp toelec-tronic EngineeringShenzhen UniversityShenzhen 518060China

Li_(2)MnO_(3)and Li_(2)RuO_(3)represent two prototype Li-rich transition metal(TM)oxides as high-capacity cathodes for Li-ion batteries,which have similar crystal structures but show quite different cycling performances.Here,based on the first-princi-ples calculations,we systematically studied the electronic structures and defect properties of these two Li-rich cathodes,in order to get more understanding on the structural degradation mechanism in Li-rich TM oxides.Our calculations indicated that the structural and cycling stability of Li_(2)MnO_(3)and Li_(2)RuO_(3)depend closely on their electronic structures,especially the energy of their highest occupied electronic states(HOS),as it largely determines the defect properties of these cathodes.For Li_(2)MnO_(3)with low-energy HOS,we found that,due to the defect charge transfer mechanism,various defects can form spontaneously in its host structure as Li ions are extracted upon delithiation,which seriously deteriorates its structural and cycling stability.While for Li_(2)RuO_(3),on the other hand,we identified that the high-energy HOS prevents it from the defect formation upon delithi-ation and thus preserve its cycling reversibility.Our studies thus illustrated an electronic origin of the structural degradation in Li-rich TM oxides and implied that it is possible to improve their cycling performances by carefully adjusting their TM compo-nents.

关键词： defects Li-ion batteries first-principles calculations

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

Taohong Siwu decoction(桃红四物汤)ameliorates atherosclerosis in rats possibly through toll-like receptor 4/myeloid differentiation primary response protein 88/nuclear factor-κB signal pathway

引用

Journal of Traditional Chinese Medicine 2024年第1期44卷 103-112页

作者： CHANG Fengjin ZHOU peng LI Guoying ZHANG Weizhi ZHANG yanyan peng Daiyin CHEN Guangliang Department of Pharmacy the First Affiliated Hospital of Anhui University of Chinese MedicineHefei 230031China School of Integrated Traditional and Western Medicine Anhui University of Chinese MedicineHefei 230012China Anhui Province Key Laboratory of Chinese Medicinal Formula Hefei 230012China School of Pharmacy Anhui University of Chinese MedicineHefei 230012China

OBJECTIVE:To investigate the effect of Taohong Siwu decoction(桃红四物汤,TSD)on atherosclerosis in rats as well as investigate the underlying mechanism based on molecular docking.METHODS:Sixty healthy male Sprague-Dawley rats were randomly divided into 6 groups with 10 rats in each group:control group,model group,atorvastatin group(AT,2.0 mg/kg),and TSD groups(20,10,5 g/kg)after 7 d of acclimation.The model of atherosclerosis was successfully established except the control group by high fat diet(HFD)and vitamin D2.Biochemical analyzers were used to detect the levels of triglyceride(TG),total cholestero(TC),low density lipoprotein-cholesterol(LDLC)and high density lipid-cholesterol(HDL-C)in blood lipid.The levels of tumor necrosis factor-α(TNF-α),interleukin-6(IL-6)and interleukin-1β(IL-1β)were determined by enzyme-linked immunosorbent assay.Sudan IV staining and Hematoxylin and eosin staining(HE staining)were performed to observe the pathological changes in aortic tissue.Molecular docking technology was used to predict the best matching between the main components of TSD and the target proteins.The expression of target proteins was further detected by quantitative real time polymerase chain reaction(q RTPCR)and Western blot analysis.RESULTS:The results showed that TSD restricted atherosclerosis development and decreased the inflammatory cytokines in plasma.Molecular docking results predicted that the main components of TSD showed a strong binding ability with toll-like receptor(TLR4),myeloid differentiation primary response protein 88(My D88),and nuclear factor kappa-B(NF-κB).The results of q RT-PCR and Western blot analysis showed that the m RNA and protein expressions of TLR4,My D88 and NF-κB p65 in the aorta were reduced in atorvastatin group and TSD group.CONCLUSIONS:TSD can ameliorate atherosclerosis in rats,and the underlying mechanism is supposed be related to the suppression of inflammatory response by regulating TLR4/My D88/NF-κB signal pathway.

关键词： atherosclerosis molecular docking simulation tolllike receptor 4 myeloid differentiation factor 88 NF-kappa B signal transduction Taohong Siwu decoction

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

Accelerated water harvesting from vapor via a bio-inspired hydrogel pattern

引用

National Science Review 2024年第3期11卷 48-49页

作者： Lianbin Zhang peng Wang State Key Laboratory of Material Processing and Die&Mould Technology Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology(HUST) School of Environmental Science and Engineering Sun Yat-sen University

Water and energy sustainability are integral parts of resource sustainability of the world. Due to water molecules' superior capability of serving as both hydrogenbond donor and acceptor, phase change of water, especially between liquid and vapor, underpins global water cycles,facilitates energy transformation and transfer, and thus helps shape the unique local weather and global climate patterns.

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

Time-Periodic Solutions to Quasilinear Hyperbolic Systems on General Networks

引用

Chinese Annals of Mathematics,Series B 2024年第1期45卷 41-72页

作者： peng QU School of Mathematical Sciences Fudan UniversityShanghai 200433China

For quasilinear hyperbolic systems on general networks with time-periodic boundary-interface conditions with a dissipative structure,the existence and stability of the time-periodic classical solutions are discussed.

关键词： Time-periodic solution Quasilinear hyperbolic system General net-work Classical solution Asymptotic stability

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

Thermal and mechanical behavior of casting copper alloy wheel during wheel and belt continuous casting process

引用

China Foundry 2024年第1期21卷 82-90页

作者： Kun Gao Yan peng School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004HebeiChina

To investigate the thermal and mechanical behavior of casting wheel,a two-dimensional thermoelastic-plastic finite element model was used to predict the temperature,stress and distortion distribution of the casting wheel during the wheel and belt continuous casting process.The effects of grinding thickness and casting speed on the thermal and mechanical behaviors of the center of the hot face of the casting wheel were discussed in detail.In each rotation,the casting wheel passes through four different spray zones.The results show that the temperature distribution of the casting wheel in different spray zones is similar,the temperature of the hot face is the highest and the temperature reaches the peak in the spray zoneⅢ.The stress and distortion depend on the temperature distribution,and the maximum stress and distortion of the hot face are 358.2 MPa and 1.82 mm,respectively.The temperature at the center of the hot face decreases with increasing grinding thickness and increases with increasing casting speed.

关键词： casting wheel finite element model grinding thickness casting speed hot face spray zones

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

Evaluation of water management on arsenic methylation and volatilization in arsenic-contaminated soils strengthened by bioaugmentation and biostimulation

引用

Journal of Environmental Sciences 2024年第3期137卷 515-526页

作者： peng Chen Yi Liu Guo-Xin Sun State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China University of Chinese Academy of Sciences Beijing 100049China

Arsenic(As) fate in paddy fields has been one of the most significant current issues due to the strong As accumulation potential of rice plants under fooded conditions. However,no attempt was done to explore As methylation and volatilization under non-fooded conditions. Herein, we investigated the effects of water management on As methylation and volatilization in three arsenic-contaminated soils enhanced by biostimulation with strawderived organic matter and bioaugmentation with genetic engineered Pseudomonas putida KT2440(GE P. putida). Under fooded conditions, the application of biochar(BC), rice straw(RS)and their combination(BC+RS) increased total As in porewater. However, these effects were greatly attenuated under non-fooded conditions. Compared with RS amendment alone, the combination of GE P. putida and RS further promoted the As methylation and volatilization,and the promotion percentage under non-fooded conditions were significantly higher than that under fooded conditions. The combined GE P. putida and RS showed the highest efficiency in As methylation(88 μg/L) and volatilization(415.4 μg/(kg·year)) in the non-fooded soil with moderate As contamination. Finally, stepwise multiple linear regression analysis presented that methylated As, DOC and p H in porewater were the most important factors contributing to As volatilization. Overall, our findings suggest that combination of bioaugmentation with GE P. putida and biostimulation with RS/BC+RS is a potential strategy for bioremediation of arsenic-contaminated soils by enhancing As methylation and volatilization under non-fooded conditions.

关键词： Arsenic methylation Arsenic volatilization Water management Straw incorporation Bioaugmentation

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

Study on the Mechanism of Glutamine Promoting the Synthesis of Colonic Mucin and Maintaining the Stability of Intestinal Microbiota in Septic Mice

引用

Food Science and Human Wellness 2024年

作者： yanyan Pan Gang Yang Dan Wu Yan Wei Shijun Fan Lin Xia Qian Chen Qianying Huang Yongling Lu Xi peng Clinical Medical Research Center Southwest Hospital Third Military Medical University (Army Medical University) Burn Department Ningbo No.2 Hospital nstitute of Burn Research State Key Laboratory of Trauma and Chemical Poisoning Southwest Hospital Third Military Medical University (Army Medical University)

Colonic mucus and gut microbiota closely linked through mutual regulatory effect. While their alterations during sepsis and whether glutamine can maintain the colonic mucus barrier and gut microbiota stability are unclear. Cecal ligation and puncture-induced sepsis in mice was utilized to observe changes in colonic mucus， gut microbiota， and their interaction with glutamine intervention. Our findings indicated that glutamine mitigated sepsis-induced intestinal damage and restores colonic mucus barrier function by augmenting mucin synthesis. Further analysis revealed that goblet cells were under oxidative stress after sepsis， resulting in anterior gradient-2 (AGR2)， the key mucin-modifying enzyme， being dissynthesized， and inhibiting mucin2 (MUC2) maturation. glutamine could ameliorates this situation by promoting the key enzyme glucose-6-phosphate dehydrogenase (G6PD) glycosylation in the pentose phosphate pathway， increasing the reduced nicotinamide adenine dinucleotide phosphate (NADPH) synthesis， reducing endoplasmic reticulum stress， and accelerating AGR2 synthesis and MUC2 maturation. Additionally， glutamine aided in maintaining gut microbiota stability during sepsis， up-regulating mucin-associated bacteria such as Akkermansia and Alistipes. These bacteria， intimately linked to mucin synthesis and degradation， may impact intestinal mucus stability. In conclusion， glutamine can maintain goblet cell redox balance， promotes AGR2 synthesis and MUC2 maturation， shields the mucus barrier， and potentially maintains gut microbiota stability by regulating the interaction between bacteria and mucus， thus alleviating sepsis-induced intestinal damage.

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

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：