检索结果-南通市图书馆

Fe-doped Co_(3)O_(4) nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction

引用

Nano Research 2024年第4期17卷 2276-2282页

作者： Xuwei Liu Chaozhen Liu Xun He zhengwei Cai Kai Dong Jun Li Xiaoya Fan Ting xie Xiya Yang Yonglan Luo Dongdong Zheng Shengjun Sun Sulaiman Alfaifi Feng Gong Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 211189China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Chemistry Department Frontier of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Nitrate(NO_(3)^(-)),a nitrogen-containing pollutant,is prevalent in aqueous solutions,contributing to a range of environmental and health-related issues.The electrocatalytic reduction of NO_(3)^(-)holds promise as a sustainable approach to both eliminating NO_(3)^(-)and generating valuable ammonia(NH_(3)).Nevertheless,the reduction reaction of NO_(3)^(-)(NO_(3)^(-)RR),involving 8-electron transfer process,is intricate,necessitating highly efficient electrocatalysts to facilitate the conversion of NO_(3)^(-)to NH_(3).In this study,Fe-doped Co_(3)O_(4) nanowire strutted three-dimensional(3D)pinewood-derived carbon(Fe-Co_(3)O_(4)/PC)is proposed as a high-efficiency NO_(3)^(-)RR electrocatalyst for NH_(3) production.Operating within 0.1 M NaOH containing NO_(3)^(-),Fe-Co_(3)O_(4)/PC demonstrates exceptional performance,obtain an impressively large NH_(3) yield of 0.55 mmol·h^(-1)·cm^(-2) and an exceptionally high Faradaic efficiency of 96.5%at-0.5 V,superior to its Co_(3)O_(4)/PC counterpart(0.2 mmol·h^(-1)·cm^(-2),73.3%).Furthermore,the study delves into the reaction mechanism of Fe-Co_(3)O_(4) for NO_(3)^(-)RR through theoretical calculations.

关键词： Fe-doped Co_(3)O_(4) nanowire pinewood-derived carbon electrocatalytic NO_(3)-reduction NH_(3) synthesis density functional theory

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

The artificial intelligence pharma era after“Chat Generative Pre-trained Transformer”

Medical Review

引用

Medical Review 2023年第3期3卷 198-199页

作者： zhengwei xie Gangqing Hu Peking University International Cancer Institute and School of Basic Medicine Peking University Health Science CenterPeking UniversityBeijing 100191China Peking University–Yunnan Baiyao International Medical Research Center Peking University Health Science CenterPeking UniversityBeijing 100191China Department of Microbiology Immunologyand Cell BiologyWest Virginia UniversityMorgantownWVUSA

The era of advanced artificial intelligence has arrived with the development of chatbots like ChatGPT(Chat Generative Pre-trained Transformer).As described by Ouyang et al.(2022),ChatGPT demonstrates an impressive ability to generate human-like responses and solve practical problems,surpassing original expectations for its capabilities.The rapid release and adoption of ChatGPT signals a new phase in AI development,powered by large language models that can be fine-tuned through human feedback.However,risks remain regarding how such powerful models may be misused.Further research is needed to ensure safe and ethical deployment of these transformative technologies.

关键词： artificial intelligence ChatGPT pharma

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

Reduced irreversible capacities of graphene oxide-based anodes used for lithium ion batteries via alkali treatment

引用

Journal of Energy Chemistry 2019年第10期28卷 73-81页

作者： Danhua Jiao zhengwei xie Qi Wan Meizhen Qu Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 610041SichuanChina University of Chinese Academy of Sciences Beijing 100039China Shenzhen New Hengye Battery Technology Co. Ltd.Shenzhen 518055GuangdongChina

The large irreversible capacities of graphene oxide-based anodes hinder commercial applications of GO materials although the high specific capacity of it has been universally accepted. In this paper, GO was treated under alkaline condition and the composite consisting of the modified GO and graphite was used as anode for lithium ion batteries (LIBs), resulting in an improved initial coulombic efficiency. Electrochemical tests also showed that the modified GO/graphite electrode possessed 86.0% of initial coulombic efficiency, which was 15% higher than that of pristine GO/graphite electrode. The species and the content of functional groups were investigated via XPS, FTIR characterizations in detail, which certified that the ring-opening reaction of epoxides under alkaline condition could greatly reduce the irreversible capacity of GO/graphite anode, in addition, the reversible capacity was guaranteed at the same time. This modified GO/graphite electrodes in the LIBs exhibit superior rate capability and long cycle life. The uniqueness of this electrode lied in its chemical stability, which benefits from the transition of epoxide group and unstable functional groups removal.

关键词： Irreversible capacity Graphene oxide Epoxide group Ring-opening reaction

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

Drug development accelerated by artiﬁcial intelligence

Medical Review

引用

Medical Review 2023年第3期3卷 193-194页

作者： zhengwei xie Hao Li PKU International Cancer Institute and Departmaent of Pharmacology School of Basic MedicinePeking UniversityBeijing 100871China Peking University-Yunnan Baiyao International Medical Research Center Peking University Health Science CenterPeking UniversityBeijing 100191China Department of Biochemistry and Biophysics University of California San Francisco17004th StreetSan FranciscoCA 94143USA

The development of biopharmaceuticals,driven by advances in molecular cell biology,has accelerated in the past few decades.However,this development presents a paradox,namely,that highly developed biotechnology has led to lower success rates in clinical trials and higher costs in developing individual drugs.This huge obstacle has made drug development the exclusive privilege of large companies and has limited opportunities for small companies to develop advanced drugs.There is also a huge difference between developed and developing countries in terms of their capacity for pharmaceutical research and development(R&D),and high barriers limit the development of innovative drugs in developing countries.

关键词： companies drugs obstacle

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

Prim-O-glucosylcimifugin ameliorates aging-impaired endogenous tendon regeneration by rejuvenating senescent tendon stem/progenitor cells

引用

Bone Research 2023年第4期11卷 784-802页

作者： Yu Wang Shanshan Jin Dan Luo Danqing He Min Yu Lisha Zhu Zixin Li Liyuan Chen Chengye Ding Xiaolan Wu Tianhao Wu Weiran Huang Xuelin Zhao Meng Xu zhengwei xie Yan Liu Laboratory of Biomimetic Nanomaterials Department of OrthodonticsPeking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental Materials&Translational Research Center for Orocraniofacial Stem Cells and Systemic HealthBeijing 100081China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China Peking University International Cancer Institute Health Science CenterPeking UniversityBeijing 100083China Department of Orthopedics the Fourth Medical Center of PLA General HospitalBeijing 100048China

Adult tendon stem/progenitor cells(TSPCs)are essential for tendon maintenance,regeneration,and repair,yet they become susceptible to senescence with age,impairing the self-healing capacity of tendons.In this study,we employ a recently developed deep-learning-based efficacy prediction system to screen potential stemness-promoting and senescence-inhibiting drugs from natural products using the transcriptional signatures of stemness.The top-ranked candidate,prim-O-glucosylcimifugin(POG),a saposhnikovia root extract,could ameliorate TPSC senescent phenotypes caused by long-term passage and natural aging in rats and humans,as well as restore the self-renewal and proliferative capacities and tenogenic potential of aged TSPCs.In vivo,the systematic administration of POG or the local delivery of POG nanoparticles functionally rescued endogenous tendon regeneration and repair in aged rats to levels similar to those of normal animals.Mechanistically,POG protects TSPCs against functional impairment during both passage-induced and natural aging by simultaneously suppressing nuclear factor-κB and decreasing mTOR signaling with the induction of autophagy.Thus,the strategy of pharmacological intervention with the deep learning-predicted compound POG could rejuvenate aged TSPCs and improve the regenerative capacity of aged tendons.

关键词： tendon endogenous progenitor

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

基于功率控制环扰动的DC-DC变换器能量信息一体化研究

引用

电力系统保护与控制 2024年第7期52卷 149-156页

作者：祝贺谢志远曹旺斌胡正伟华北电力大学电气与电子工程学院北京102206 河北省电力物联网技术重点实验室(华北电力大学) 河北保定071003

针对实现DC-DC变换器之间的信息交互较为复杂的问题,提出了一种基于功率控制环扰动实现其能量信息一体化的方法。通过在DC-DC变换器的传统功率控制环中叠加二进制频移键控(binary frequency shift keying,2FSK)信号作为扰动,将数据信息... 详细信息

针对实现DC-DC变换器之间的信息交互较为复杂的问题,提出了一种基于功率控制环扰动实现其能量信息一体化的方法。通过在DC-DC变换器的传统功率控制环中叠加二进制频移键控(binary frequency shift keying,2FSK)信号作为扰动,将数据信息叠加到传统脉冲宽度调制(pulse-width modulation,PWM)信号中,使得该PWM信号同时包含数据信息,实现能量信息一体化。首先,给出基于2FSK的功率/数据双载波调制以及实时的滑动离散傅里叶变换(sliding discrete Fourier transform,SDFT)解调方案。然后,通过对Buck变换器的能量信息一体化模型进行小信号建模与分析可知,降低输入阻抗可提升通信的信噪比。最后搭建一个由两个Buck变换器并联的实验装置进行验证。实验结果表明在稳态和负载突变的工况下均可实现3 kb/s的稳定通信,验证了所提方法的可行性。该方法使得DC-DC变换器能同时进行功率变换和数据传输,提升数字化和智能化水平。

关键词：扰动信号二进制频移键控滑动傅里叶变换功率/数据双载波调制能量信息一体化

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

安徽革命文物文创开发优势及路径分析

引用

阜阳师范大学学报（社会科学版） 2024年第1期 22-27页

作者：谢政伟蚌埠学院文学与教育学院安徽蚌埠233030

结合安徽革命文物保护利用现状,重点阐述利用安徽革命文物加以文创产品开发的诸多优势,并就当前安徽革命文物文创开发面临的问题,指出其文创开发中应把准的基本路径,从而为安徽革命文物活化利用厘清思路、找准方向。

关键词：革命文物安徽文创开发优势路径

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

Expert consensus on difficulty assessment of endodontic therapy

引用

International Journal of Oral Science 2024年第1期16卷 15-25页

作者： Dingming Huang Xiaoyan Wang Jingping Liang Junqi Ling Zhuan Bian Qing Yu Benxiang Hou Xinmei Chen Jiyao Li Ling Ye Lei Cheng Xin Xu Tao Hu Hongkun Wu Bin Guo Qin Su Zhi Chen Lihong Qiu Wenxia Chen Xi Wei zhengwei Huang Jinhua Yu Zhengmei Lin Qi Zhang Deqin Yang Jin Zhao Shuang Pan Jian Yang Jiayuan Wu Yihuai Pan Xiaoli xie Shuli Deng Xiaojing Huang Lan Zhang Lin Yue Xuedong Zhou State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Operative Dentistry and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina Department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghuaSchool of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina The State Key Laboratory Breeding Base of Basic Science of Stomatology(Hubei-MOST)&Key Laboratory of Oral Biomedicine Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhanChina Department of Operative Dentistry&Endodontics School of StomatologyThe Fourth Military Medical UniversityXi’anChina Department of Endodontics Beijing Stomatological HospitalSchool of StomatologyCapital Medical UniversityBeijingChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Preventive Dentistry West China Hospital of StomatologySichuan UniversityChengduChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Geriatric dentistry West China Hospital of Stomatology

Endodontic diseases are a kind of chronic infectious oral disease. Common endodontic treatment concepts are based on the removal of inflamed or necrotic pulp tissue and the replacement by gutta-percha. However, it is very essential for endodontic treatment to debride the root canal system and prevent the root canal system from bacterial reinfection after root canal therapy(RCT). Recent research, encompassing bacterial etiology and advanced imaging techniques, contributes to our understanding of the root canal system’s anatomy intricacies and the technique sensitivity of RCT. Success in RCT hinges on factors like patients, infection severity, root canal anatomy, and treatment techniques. Therefore, improving disease management is a key issue to combat endodontic diseases and cure periapical lesions. The clinical difficulty assessment system of RCT is established based on patient conditions, tooth conditions, root canal configuration, and root canal needing retreatment, and emphasizes pre-treatment risk assessment for optimal outcomes. The findings suggest that the presence of risk factors may correlate with the challenge of achieving the high standard required for RCT. These insights contribute not only to improve education but also aid practitioners in treatment planning and referral decision-making within the field of endodontics.

关键词： anatomy difficulty treatment

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

基于深度强化学习的Π型阻抗匹配网络多参数最优求解方法

引用

电力系统保护与控制 2024年第6期52卷 152-163页

作者：胡正伟夏思懿王文彬曹旺斌谢志远华北电力大学电子与通信工程系河北保定071003

针对电力线信道阻抗变化复杂、负载阻抗不匹配造成通信质量差等问题,提出一种基于深度强化学习的Π型阻抗匹配网络多参数最优求解方法,并验证分析了深度强化学习对于寻找最优匹配参数的可行性。首先,建立Π型网络结构,推导窄带匹配和宽... 详细信息

针对电力线信道阻抗变化复杂、负载阻抗不匹配造成通信质量差等问题,提出一种基于深度强化学习的Π型阻抗匹配网络多参数最优求解方法,并验证分析了深度强化学习对于寻找最优匹配参数的可行性。首先,建立Π型网络结构,推导窄带匹配和宽带匹配场景下的最优匹配目标函数。其次,采用深度强化学习,利用智能体的移动模拟实际匹配网络的元件参数变化,设置含有理论值与最优匹配值参数的公式作为奖励,构建寻优匹配模型。然后,分别仿真验证了窄带匹配和宽带匹配两种应用场景并优化模型的网络参数。最后,仿真结果证明,经过训练后的最优模型运行时间较短且准确度较高,能够较好地自动匹配电力线载波通信负载阻抗变化,改善和提高电力线载波通信质量。

关键词：深度强化学习电力线通信窄带匹配宽带匹配

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

肺移植物失功能病肺4例临床病理学分析

引用

中华病理学杂志 2024年第1期53卷 74-76页

作者：陈炜洁武春燕张莉萍侯立坤董正伟黄焰谢晓枫谢惠康同济大学附属上海市肺科医院病理科上海200433

目的:探讨肺移植物失功能后接受再次肺移植患者病肺的临床病理学特征及预后。方法:收集同济大学附属上海市肺科医院4例患者共6次再次肺移植物失功能病肺的临床、病理特征及转归。结果:经病理证实的并发症包括感染、急性排异反应、闭塞... 详细信息

目的:探讨肺移植物失功能后接受再次肺移植患者病肺的临床病理学特征及预后。方法:收集同济大学附属上海市肺科医院4例患者共6次再次肺移植物失功能病肺的临床、病理特征及转归。结果:经病理证实的并发症包括感染、急性排异反应、闭塞性细支气管炎、急性纤维素性机化性肺炎(acute fibrinoid organizing pneumonia,AFOP)、胸膜肺实质弹力纤维增生症。结论:肺移植术后常出现多种并发症,AFOP及胸膜肺实质弹力纤维增生症的出现,尤其是AFOP提示预后不良。AFOP患者再移植后可复发,其发生可能与急性排异反应具有相关性。早期开展计划性肺活检有助于AFOP的检出,对并发症进行及时诊断有利于指导临床合理治疗和提示预后。

关键词：急性排异反应闭塞性细支气管炎肺移植临床病理学特征再移植预后不良肺活检肺实质

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

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：