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Highly mass activity electrocatalysts with ultralow Pt loading on carbon black.for hydrogen evolution reaction

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International Journal of minerals,Metallurgy and Materials 2025年第1期32卷 182-190页

作者： Shaorou k. Yajing Zhao Xin min Yanghong Li Ruiyu mi Yangai Liu Xiaowen Wu minghao Fang Zhaohui Huang Engineering Research Center of ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastersNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China

Pt-based nanocatalysts offer excellent prospects for various ***,the low loading of Pt with excellent performance for efficient and stable nanocatalysts still presents a considerable *** this study,nanocatalysts with ultralow Pt content,excellent performance,and carbon black.as support were prepared through in-situ ***~2-nm particles uniformly and stably dispersed on carbon black.because of the strong s-p-d orbital hybridizations between carbon black.and Pt,which suppressed the agglomeration of Pt *** unique structure is beneficial for the hydrogen evolution *** catalysts exhibited remark.ble catalytic activity for hydrogen evolution reaction,exhibiting a potential of 100 mV at 100 mA·cm^(-2),which is comparable to those of commercial Pt/C *** activity(1.61 A/mg)was four times that of a commercial Pt/C catalyst(0.37 A/mg).The ultralow Pt loading(6.84wt%)paves the way for the development of next-generation electrocatalysts.

关键词： hydrogen evolution reaction ultralow platinum in-situ synthesis ultrasound

Insights into spinal muscular atrophy from molecular biomark.rs

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Neural Regeneration Research 2025年第7期20卷 1849-1863页

作者： Xiaodong Xing Xinzhu Liu Xiandeng Li mi Li Xian Wu Xiaohui Huang Ajing Xu Yan Liu Jian Zhang Department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina College of Pharmacy Chongqing Medical UniversityChongqingChina

Spinal muscular atrophy is a devastating motor neuron disease characterized by severe cases of fatal muscle *** is one of the most common genetic causes of mortality among infants aged less than 2 *** research is currently receiving more attention,and new candidate biomark.rs are constantly being *** review initially discusses the evaluation methods commonly used in clinical practice while briefly outlining their respective pros and *** also describe recent advancements in research and the clinical significance of molecular biomark.rs for spinal muscular atrophy,which are classified as either specific or non-specific *** review provides new insights into the pathogenesis of spinal muscular atrophy,the mechanism of biomark.rs in response to drug-modified therapies,the selection of biomark.r candidates,and would promote the development of future ***,the successful utilization of biomark.rs may facilitate the implementation of gene-targeting treatments for patients with spinal muscular atrophy.

关键词： biomark.rs disease progression gene-targeting therapy neurofilaments Nusinersen spinal muscular atrophy(SMA) survival motor neuron therapeutic evaluation treatment outcomes

Operation Risk.Analysis of Electric Vehicle With Ultra-fast Charging Integrated to Distribution Network.Considering the Bearing Capacity of Power System

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Dianwang Jishu/Power System Technology 2025年第1期49卷 187-197页

作者： Xu, Yanchun Li, Sijia Zhang, Tao mi, Lu Hubei Provincial k.y Laboratory for Operation and Control of Cascaded Hydropower Station China Three Gorges University Hubei Province Yichang 443002 China Department of Electrical and Computer Engineering Texas A & M University TX 77840 United States

At present, the access of distributed generation and electric vehicles with ultra-fast charging to the distribution network.will increase the operational risk.of the system. Aiming at the problem that the existing risk.assessment indicators fail to consider the system capacity effectively, this paper proposed a comprehensive index of risk.assessment of distribution network. considering the power system's capacity. The distributed generation output model and the electric vehicle load model with ultra-fast charging were first constructed. Then, the index based on the distribution entropy theory was used to measure the risk.caused by the over-limit of state variables such as voltage and power and the uncertainty of their distribution. The index based on the Theil entropy theory was introduced to measure the risk.caused by the equilibrium degree of the incremental distribution of state variables after the load impacted the system. The weight analysis method combining the order relationship method and the objective weighting method was used to evaluate the system risk.comprehensively. Finally, the rationality of the comprehensive index was calculated and analyzed by testing the IEEE 33-node system. The results show that the comprehensive index proposed can effectively evaluate the potential risk.when the system does not exceed the limit and consider that the ultra-fast charging of electric vehicles will change the time series distribution characteristics of comprehensive risk. The research in this paper can provide theoretical guidance for the safe operation of electric vehicles. with ultra-fast charging connected to the distribution network. © 2025 Power System Technology Press. All rights reserved.

关键词： Risk.analysis

Additive neurorestorative effects of exercise and docosahexaenoic acid intak. in a mouse model of Park.nson’s disease

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Neural Regeneration Research 2025年第2期20卷 574-586页

作者： Olivier k.rdiles Méryl-Farelle Oye mintsa mi-mba k.therine Coulombe Cyntia Tremblay VincentÉmond Martine Saint-Pierre Clémence Rouxel Line Berthiaume Pierre Julien Francesca Cicchetti Frédéric Calon Facultéde pharmacie UniversitéLaval1050 Avenue de la MédecineQuebecQCCanada Axe Neuroscience Centre de recherche du CHU de Québec-UniversitéLaval(Pavillon CHUL)2705 Boulevard LaurierQuebecQCCanada Institute of Nutrition and Functional Foods QuebecQCCanada Optinutribrain International Associated Laboratory(NutriNeuro FranceINAFCanada)QuebecQCCanada Axe Endocrinologie et Néphrologie Centre de recherche du CHU de Québec-UniversitéLavalQuebecQCCanada Département de Médecine Facultéde MédecineUniversitéLavalQuebecQCCanada Département de Psychiatrie et Neurosciences Facultéde MédecineQuebecQCCanada

There is a need to develop interventions to slow or reverse the degeneration of dopamine neurons in Park.nson’s disease after *** that preclinical and clinical studies suggest benefits of dietary n-3 polyunsaturated fatty acids,such as docosahexaenoic acid,and exercise in Park.nson’s disease,we investigated whether both could synergistically interact to induce recovery of the dopaminergic ***,mice received a unilateral stereotactic injection of 6-hydroxydopamine into the striatum to establish an animal model of nigrostriatal *** week. after lesion,animals were fed a docosahexaenoic acid-enriched or a control diet for the next 8 *** this period,the animals had access to a running wheel,which they could use or *** acid treatment,voluntary exercise,or the combination of both had no effect on(i)distance traveled in the open field test,(ii)the percentage of contraversive rotations in the apomorphine-induction test or(iii)the number of tyrosine-hydroxylase-positive cells in the substantia nigra pars ***,the docosahexaenoic acid diet increased the number of tyrosine-hydroxylase-positive terminals and induced a rise in dopamine concentrations in the lesioned *** to docosahexaenoic acid treatment or exercise alone,the combination of docosahexaenoic acid and exercise(i)improved forelimb balance in the stepping test,(ii)decreased the striatal DOPAC/dopamine ratio and(iii)led to increased dopamine transporter levels in the lesioned *** present results suggest that the combination of exercise and docosahexaenoic acid may act synergistically in the striatum of mice with a unilateral lesion of the dopaminergic system and provide support for clinical trials combining nutrition and physical exercise in the treatment of Park.nson’s disease.

关键词： 6-hydroxydopamine dopamine dopamine transporter exercise neurorestoration Park.nson’s disease polyunsaturated fatty acids omega-3

含DG的交直流不平衡配电系统暂态电压稳定性分析

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电力自动化设备 2025年第1期 33-41页

作者：徐艳春王霖张涛王凌云 mi Lu 三峡大学梯级水电站运行与控制湖北省重点实验室德克萨斯农工大学电气与计算机工程学院

分布式电源（DG）以及大量恒功率直流负荷接入交直流配电系统使得母线暂态电压表现出正负极耦合且多波动的特性，现有暂态电压稳定性评估方法准确率低且适用性较差。推导分析了双极交直流配电系统直流侧线路、负荷参数不平衡时影响系统... 详细信息

分布式电源（DG）以及大量恒功率直流负荷接入交直流配电系统使得母线暂态电压表现出正负极耦合且多波动的特性，现有暂态电压稳定性评估方法准确率低且适用性较差。推导分析了双极交直流配电系统直流侧线路、负荷参数不平衡时影响系统母线暂态电压稳定的因素。基于二元表判据思想，提出一种改进的自适应母线暂态电压稳定性评估指标。针对参数不平衡时含DG的双极交直流配电系统，引入稳定性保持因子，提出母线与系统的暂态电压稳定裕度计算方法。基于所提方法利用MATLAB/Simulink.真平台在改进的IEEE 33节点与IEEE 69节点双极交直流配电系统中量化影响系统暂态电压稳定性的因素，并对比验证了所提指标的有效性和优越性。

关键词：暂态电压稳定性交直流系统不平衡配电系统直流故障分析

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中华文化生命体的特征探析

新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 122-127页

作者：秘天一新疆大学马克思主义学院新疆乌鲁木齐830046

中华文化生命体呈现对环境刺激的反应、生长发育、新陈代谢、自我调节和超脱自然选择等特征,具有整体性、连贯性、创新性、开放性与和平性特质。整体性和连贯性确保中华文化在数千年发展中的赓承延续与稳定,通过“天人合一”“和而不同... 详细信息

中华文化生命体呈现对环境刺激的反应、生长发育、新陈代谢、自我调节和超脱自然选择等特征,具有整体性、连贯性、创新性、开放性与和平性特质。整体性和连贯性确保中华文化在数千年发展中的赓承延续与稳定,通过“天人合一”“和而不同”实现内在和谐统一;创新性使中华文化在历史长河中保持强大的生长力,推动中华优秀传统文化现代转型,实现马克思主义中国化的新飞跃;开放性增强了中华文化的适应性和生命力,通过吸收和融合外来优秀文化元素,使中华文化在全球化进程中保持独特性和竞争力,并以开放姿态积极借鉴吸收人类文明一切优秀成果,推动文化守正创新;和平性源于对和谐、和合文化的深刻理解,强调和谐共生、和合共在、和平发展,通过对话与合作解决争端。中华文化生命体在全球化背景下展现出独特的现代价值和全球视野,彰显了中华文化的强大生命力和国际影响力。

关键词：习近平文化思想中华文化生命体两个结合文化新使命中华优秀传统文化

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基于电子商务环境的农机管理系统设计

农机化研究 2025年第2期47卷 96-100页

作者：王弥河南工业职业技术学院河南南阳473000

介绍了电子商务环境的背景和现状,详细描述了农机管理系统的实际需求和业务流程,并根据系统设计原则设计了系统总体架构,最后从人机管理、作业管理及综合信息等3个方面实现了农机管理系统。系统在测试过程中取得了较好的应用效果,是一... 详细信息

介绍了电子商务环境的背景和现状,详细描述了农机管理系统的实际需求和业务流程,并根据系统设计原则设计了系统总体架构,最后从人机管理、作业管理及综合信息等3个方面实现了农机管理系统。系统在测试过程中取得了较好的应用效果,是一种具有广泛应用前景的高效农机管理系统。

关键词：农机管理系统电子商务环境人机管理作业管理综合信息

In Memory of Academician Er-mi Zhao(1930-2016)

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Zoological Research 2017年第1期38卷 2-4页

作者： Zhao Er mi k.y Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province Kunming Institute of Zoology Kunming Yunnan 650223 China CAS Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences Shanghai 200031 China

Academician Er-mi Zhao,Professor of the Chengdu Institute of Biology,Chinese Academy of Sciences,and Sichuan University,passed away on 24 December,2016,to the great loss of both Chinese and world herpetology.

关键词： GF EM

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论灾害事故预防应对的调查评估问题

灾害学 2025年第1期40卷 1-7,85页

作者：刘传正米文忠黄帅应急管理部国家自然灾害防治研究院北京100085 清华大学合肥公共安全研究院灾害事故调查评估应急管理部重点实验室北京100084

为了推动我国灾害事故预防应对调查评估工作的科学化与规范化发展,该文通过界定灾害事故类型,探讨了灾害事故预防应对调查评估的目的任务、工作原则、工作方法、工作组织和成果应用方面的基本问题。灾害事故被划分为灾害、事故、灾害事... 详细信息

为了推动我国灾害事故预防应对调查评估工作的科学化与规范化发展,该文通过界定灾害事故类型,探讨了灾害事故预防应对调查评估的目的任务、工作原则、工作方法、工作组织和成果应用方面的基本问题。灾害事故被划分为灾害、事故、灾害事故(链)和事故灾害(链)四类。调查评估目的任务明确为认定事实、查找问题、分析原因并提出对策措施。在工作原则上,强调了6个方面:事实依据、法规准绳、认知判断、沟通协调、良知底线和素质保障。工作方法涵盖了现场勘查、档案查阅、访谈问询、检测试验、分析计算、模拟仿真、成因论证和性质界定等8个环节。工作组织或调查机构组成包括综合协调组、法规管理组、技术工作组和专家顾问组。成果应用范畴包括即时政策制定、法规标准制修订、管理体制改革以及工作机制完善等领域。

关键词：灾害事故预防应对调查评估工作原则工作方法