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Ni_(3)S_(2) nanocrystals in-situ grown on Ni foam as highly efficient electrocatalysts for alkaline hydrogen evolution

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Rare Metals 2023年第10期42卷 3420-3429页

作者： Rui Sun Zhan-Hua Su zhi-feng zhao Mei-Qi Yang Tian-Sheng Li Jing-Xiang zhao Yong-Chen Shang College of Chemistry Guangdong University of Petrochemical TechnologyMaoming525000China College of Chemistry and Chemical Engineering Harbin Normal UniversityHarbin150025China

The exploitation of cost-efficient electrocatalysts is critical to develop the hydrogen evolution reaction(HER) for hydrogen ***,Ni_(3)S_(2)/NF-x h(x=12,16 and 20,reaction time) nanocrystals in-situ grown on Ni foam(NF) were prepared via a facile hydrothermal *** results demonstrate that the reaction time plays key roles in the morphology,the hydrogen evolution performance of the samples,and the hydrogen brittleness of NF ***,the Ni_(3)S_(2)/NF-16 h displays outstanding catalytic activity for HER in alkaline solution and avoids the hydrogen brittleness of the NF skeletons *** afford a catalytic current of20 mA·cm^(-2),Ni_(3)S_(2)/NF-16 h presents ultra-low overpotential of 48 mV for hydrogen evolution and sufficient stability for 40 ***,the density functional theory(DFT) calculations revealed that the excellent electrocatalytic HER activity of Ni_(3)S_(2) could be attributed to its exposed(015) plane,which exhibited good capability for water adsorption and dissociation in an alkaline electrolyte,leading to the optimal free energy for H^(*) *** present work offers a novel strategy to design,synthesize and develop highly efficient electrocatalysts for HER.

关键词： Ni_(3)S_(2) Electrocatalysts Hydrogen evolution reaction Density functional theory calculations

Target detection for multi-UAVs via digital pheromones and navigation algorithm in unknown environments

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Frontiers of Information Technology & Electronic Engineering 2020年第5期21卷 796-808页

作者： Yan SHAO zhi-feng zhao Rong-peng LI Yu-geng ZHOU College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Lab Hangzhou 311121China Institute of Wanfeng Jinyuan Holding Group Co. Ltd.Shaoxing 312000China

Coordinating multiple unmanned aerial vehicles(multi-UAVs)is a challenging technique in highly dynamic and sophisticated *** on digital pheromones as well as current mainstream unmanned system controlling algorithms,we propose a strategy for multi-UAVs to acquire targets with limited prior *** particular,we put forward a more reasonable and effective pheromone update mechanism,by improving digital pheromone fusion algorithms for different semantic pheromones and planning individuals’probabilistic behavioral decision-making ***,inspired by the flocking model in nature,considering the limitations of some individuals in perception and communication,we design a navigation algorithm model on top of Olfati-Saber’s algorithm for flocking control,by further replacing the pheromone scalar to a *** results show that the proposed algorithm can yield superior performance in terms of coverage,detection and revisit efficiency,and the capability of obstacle avoidance.

关键词： Collective intelligence Digital pheromones Artificial potential field Navigation algorithm

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia zhao Taixi feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

Promise and challenges of traditional Chinese medicine,specifically Calculus bovis,in liver cancer treatment

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World Journal of Gastroenterology 2024年第40期30卷 4380-4385页

作者： Ao-Xi Xu zhi-feng zhao Li Zhu Yi-Heng Zhang Yan Li Yu-Fan Wei Bo-Ya Zhang Bin Jiang Tian-Ze Gao Meng-Si Li Jia-Yu Liu School of Medicine Nankai UniversityTianjin 300071China Department of General Surgery The First Medical Center of Chinese People's Liberation Army General HospitalBeijing 100853China Medical School of Chinese People's Liberation Army Medical School of Chinese People's Liberation ArmyBeijing 100853China Department of Hepatobiliary and Pancreative Surgery The First Medical CenterChinese People's Liberation Army General HospitalBeijing 100853China Department of Surgery Mancheng District People's HospitalBaoding 072150Hebei ProvinceChina Department of Neurosurgery First Medical Centre of Chinese People's Liberation Army General HospitalBeijing 100853China

Liver cancer,one of the most common malignancies worldwide,ranks sixth in incidence and third in *** cancer treatment options are diverse,inclu-ding surgical resection,liver transplantation,percutaneous ablation,transarterial chemoembolization,radiotherapy,chemotherapy,targeted therapy,immuno-therapy,and traditional Chinese medicine(TCM).A multidisciplinary team(MDT)is essential to customize treatment plans based on tumor staging,liver function,and performance status(PS),ensuring individualized patient *** decisions require a MDT to tailor strategies based on tumor staging,liver function,and PS,ensuring personalized *** approval of new first-line and second-line drugs and the establishment of standard treatments based on immune checkpoint inhibitors have significantly expanded treatment options for advanced liver cancer,improving overall ***,many patients do not respond effectively to these treatments and ultimately succumb to the *** oncology treatments,while extending patient survival,often come with severe side effects,resistance,and damage to the body,negatively impacting quality of *** et al's study published at World Journal of Gastroenterology rigorously validates the anticancer properties of Calculus bovis,enhancing our understanding of TCM and contributing to new liver cancer treatment *** over 5000 years,TCM has been used in East Asian countries like China to treat various diseases,including liver *** of real-world clinical data suggests that for patients with advanced-stage tumors lacking effective treatments,integrated TCM therapies could provide significant breakthroughs.

关键词： Traditional Chinese medicine Liver cancer Calculus bovis Treatment Promise Challenges

基于非对称聚乳酸共混物调控多重立构复合晶:定量研究

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高分子学报 2024年第4期55卷 473-484页

作者：郭明威黄黎明赵志锋南京大学化学与化工学院南京210023 信阳艺术职业学院信阳464000 河北工业大学化工学院天津310030

定量地探讨了非对称聚乳酸(PLA)外消旋共混物中,链长和摩尔比对立构复合(SC)结晶形成的关键贡献.通过控制对映体链段差异与共混比例制备一系列聚乳酸外消旋共混物,结果发现在对映体平均聚合度(DP)60以内的对映体共混物中,2个对映体具有... 详细信息

定量地探讨了非对称聚乳酸(PLA)外消旋共混物中,链长和摩尔比对立构复合(SC)结晶形成的关键贡献.通过控制对映体链段差异与共混比例制备一系列聚乳酸外消旋共混物,结果发现在对映体平均聚合度(DP)60以内的对映体共混物中,2个对映体具有完全相同数量的相同链长时,形成的SC结晶更有序且具有更少的纠缠度或非晶区域.另一方面,当2个对映体链长度不等时,长段的多余段可能在SC结晶表面保持无定形,或与其他短对映体复合,或多余链段间堆积形成同质(HC)结晶,这取决于链长的差异和共混比的双重作用:当链长差异不显著时(x_(L)

关键词：聚乳酸立构复合晶共混比分子量对映体共混物

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峡谷区岩质桥基岸坡稳定性系统分析方法研究

四川大学学报（工程科学版） 2003年第6期35卷 31-35页

作者：詹志峰谢强赵文西南交通大学土木工程学院四川成都610031

为了评价峡谷区岩质桥基岸坡稳定性,并确定桥基合理埋置位置,综合采用初步地质评价、经验公式法、岸坡应力场有限元模拟及强度分析对宜昌—万州铁路清江大桥岸坡的稳定性进行评价,确定清江大桥宜昌端桥基设置位置为埋深10m,距岸坡边缘1... 详细信息

为了评价峡谷区岩质桥基岸坡稳定性,并确定桥基合理埋置位置,综合采用初步地质评价、经验公式法、岸坡应力场有限元模拟及强度分析对宜昌—万州铁路清江大桥岸坡的稳定性进行评价,确定清江大桥宜昌端桥基设置位置为埋深10m,距岸坡边缘16m,在此桥位下,岸坡岩体满足强度要求,岸坡整体稳定,并表明该系统方法具有工程实用价值。

关键词：岩质边坡边坡稳定性桥基合理埋置位置峡谷区岩质桥基系统分析方法地质评价

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红树林微生物抗菌活性成分研究进展

中国抗生素杂志 2017年第4期42卷 241-254页

作者：徐志勇冯昭徐静海南大学热带农林学院海口570228 海南大学材料与化工学院海口570228

红树林微生物是一类生长于热带海洋潮间带的特殊海洋生物类群,其独特的生境必然会造就不同于其他生态系统的良好生物活性、独特化学结构和新颖作用机制的功能分子。本文对红树林放线菌、细菌和真菌来源抗菌活性成分的结构特点和生物学... 详细信息

红树林微生物是一类生长于热带海洋潮间带的特殊海洋生物类群,其独特的生境必然会造就不同于其他生态系统的良好生物活性、独特化学结构和新颖作用机制的功能分子。本文对红树林放线菌、细菌和真菌来源抗菌活性成分的结构特点和生物学功能进行评述,描述化合物107个(-2016年),以期揭示本领域的研究成果、存在的问题和今后研究策略。

关键词：红树林放线菌细菌真菌抗菌化合物

海绵城市设计理念在河道水环境综合整治中的应用

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工程建设与设计 2018年第8期 145-146页

作者：冯治诏南阳市建筑设计研究院河南南阳843000

主要介绍了海绵城市的设计理念,阐述了海绵城市设计理念的特点,分析了海绵城市设计理念在河道水环境综合治理中的应用,并结合水环境综合治理的问题及其原则分析其应用效果。

关键词：海绵城市设计理念水环境问题水环境治理

内镜胆道内支架引流治疗伴肝脏转移的胰头癌16例

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世界华人消化杂志 2010年第10期18卷 1067-1070页

作者：赵志峰麻树人张宁杨卓韩笑赵云峰高飞宫照杰杨琳中国人民解放军沈阳军区总医院内窥镜科辽宁省沈阳市110840

目的:评价伴肝脏转移的胰头癌患者内镜胆道内支架引流治疗的临床意义.方法:门诊就诊和转院的胰头癌伴有肝脏转移患者,如具有严重的梗阻性黄疸则符合内镜逆行胆胰管造影救治指征,然后按照知情同意的原则进入治疗研究计划.均应用内镜胆道... 详细信息

目的:评价伴肝脏转移的胰头癌患者内镜胆道内支架引流治疗的临床意义.方法:门诊就诊和转院的胰头癌伴有肝脏转移患者,如具有严重的梗阻性黄疸则符合内镜逆行胆胰管造影救治指征,然后按照知情同意的原则进入治疗研究计划.均应用内镜胆道内支架引流技术,包括金属内支架和塑料支架,治疗出院后随访观察至患者死亡.结果:16例患者进入治疗研究,其中伴有腹膜后淋巴结转移5例.均采用内镜胆道支架引流术,其中应用胆道金属支架12例,胆道塑料支架4例,胰管内支架6例.治疗后1wk时梗阻性黄疸缓解率100%,精神状况明显好转75.0%(12/16),食欲改善25.0%(4/16),睡眠改善37.5%(6/16).治疗后的患者最短生存期为9d,最长生存期为134d,平均81.4d±50.2d.随访数据表明治疗有意义的97%,治疗效果满意的11例.结论:对于伴有肝脏转移的胰头癌患者,内镜胆道内支架引流技术不仅能解除梗阻性黄疸而且可以一定程度的改善生存质量,具有一定的临床应用价值.

关键词：内镜内镜胆道支架引流术胰头癌