检索结果-南通市图书馆

Prediction and interpretation of photocatalytic NO removal on g-C_(3)N_(4)-based catalysts using machine learning

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第2期35卷 477-483页

作者： Jing Li xinyan liu Hong Wang Yanjuan Sun Fan Dong School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 611731China Research Center for Carbon-Neutral Environmental & Energy Technology Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China

Predictive modeling of photocatalytic NO removal is highly desirable for efficient air pollution ***,great challenges remain in precisely predicting photocatalytic performance and understanding interactions of diverse features in the catalytic ***,a dataset of g-C_(3) N_(4)-based catalysts with 255 data points was collected from peer-reviewed publications and machine learning(ML)model was proposed to predict the NO removal *** result shows that the Gradient Boosting Decision Tree(GBDT)demonstrated the greatest prediction accuracy with R 2 of 0.999 and 0.907 on the training and test data,*** SHAP value and feature importance analysis revealed that the empirical categories for NO removal rate,in the order of importance,were catalyst characteristics>reaction process>preparation ***,the partial dependence plots broke the ML black box to further quantify the marginal contributions of the input features(e.g.,doping ratio,flow rate,and pore volume)to the model output *** ML approach presents a pure data-driven,interpretable framework,which provides new insights into the influence of catalyst characteristics,reaction process,and preparation conditions on NO removal.

关键词： Machine learning g-C_(3)N_(4)-based catalysts NO removal Interpretability Catalytic informatics

Pregnancy Complicated With a Giant Pancreatic Tumor and Decompensation of Liver Cirrhosis:A Case Report and Literature Review

在线全文

学校读者我要写书评

暂无评论

Maternal-Fetal Medicine 2024年第1期6卷 50-53页

作者： Yi Yu Lirong Teng Juntao liu xinyan liu Ping Peng Qian Zhou Congcong liu Department of Obstetrics and Gynecology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China National Clinical Research Center for Obstetric and Gynecologic Diseases Beijing 100730China

Pregnancy with solid pseudopapillary tumor of the pancreas(SPTP)is *** pregnancy hormones may cause tumor progression,the management and treatment of SPTP need to balance the safety of pregnant women and fetuses with surgical *** reported a case of a giant pancreatic tumor diagnosed during pregnancy that was considered to be *** also showed hepatitis B virus infection and severe decompensation of liver *** termination of pregnancy was *** patient has lived with the tumor until now without *** retrieved the published case reports,summarized the clinical characteristics of pregnancy with SPTP,and explored its management during the perinatal *** patients with SPTP have a good prognosis with good maternal and fetal outcomes,and it is important to choose an appropriate treatment method and ***,pregnancy combined with decompensated liver cirrhosis needs to be terminated in a timely manner because of its high-risk status.

关键词： Pregnancy complications Pancreatic tumor Solid pseudopapillary tumor of the pancreas Liver cirrhosis decompensation Abnormal coagulation function

A post-modification strategy to precisely construct dual-atom sites for oxygen reduction electrocatalysis

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 511-517,I0012页

作者： Juan Wang xinyan liu Chang-Xin Zhao Yun-Wei Song Jia-Ning liu Xi-Yao Li Chen-Xi Bi Xin Wan Jianglan Shui Hong-Jie Peng Bo-Quan Li Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Dual-atom catalysts(DACs) afford promising potential for oxygen reduction electrocatalysis due to their high atomic efficiency and high intrinsic ***,precise construction of dual-atom sites remains a *** this work,a post-modification strategy is proposed to precisely fabricate DACs for oxygen reduction ***,a secondary metal precursor is introduced to the primary single-atom sites to introduce direct metal-metal interaction,which ensures the formation of desired atom pair structure during the subsequent pyrolysis process and allows for successful construction of *** as-prepared FeCo-NC DAC exhibits superior oxygen reduction electrocatalytic activity with a half-wave potential of 0,91 V *** hydrogen ***-air batteries equipped with the FeCo-NC DAC demonstrate higher peak power density than those with the Pt/C *** importantly,this post-modification strategy is demonstrated universal to achieve a variety of dual-atom *** work presents an effective synthesis methodology for precise construction of catalytic materials and propels their applications in energy-related devices.

关键词： Dual-atom catalysts Electrocatalysis Oxygen reduction reaction Post-modification Zinc–air batteries

在线全文

学校读者我要写书评

暂无评论

航天器在轨角动量演化及卸载策略研究

空间控制技术与应用 2024年第1期50卷 1-7页

作者：谢军刘新彦北京控制工程研究所北京100094

为了减少在轨卫星的喷气卸载次数,节省推进剂,延长卫星的使用寿命,对地球静止轨道零动量卫星和V型轮偏置动量卫星的角动量管理问题进行了研究.根据卫星角动量累计演化特点,给出两类卫星的角动量管理方法,提出优化的喷气卸载策略.基于上... 详细信息

为了减少在轨卫星的喷气卸载次数,节省推进剂,延长卫星的使用寿命,对地球静止轨道零动量卫星和V型轮偏置动量卫星的角动量管理问题进行了研究.根据卫星角动量累计演化特点,给出两类卫星的角动量管理方法,提出优化的喷气卸载策略.基于上述研究对在轨卫星非正常卸载情况进行了理论分析与仿真验证,提出解决措施.在轨试验表明,基于优化的喷气卸载策略进行卫星角动量管理,可明显减少卫星的卸载次数,验证了策略的正确性.

关键词：静止轨道在轨角动量演化角动量卸载

大球盖菇腐败真菌的分离、鉴定及生长特性研究

在线全文

学校读者我要写书评

暂无评论

食品工业科技 2024年第9期45卷 131-139页

作者：刘鑫燕李占峰彭帮柱华中农业大学食品科学技术学院湖北武汉430000 漯河微康生物科技有限公司河南漯河462300

目的:为避免微生物生长引起的大球盖菇褐变和腐败,亟待开展大球盖菇腐败菌种类的相关研究,并为探究贮藏保鲜技术提供理论依据。方法:对大球盖菇的腐败菌进行分离、纯化,通过致腐性分析筛选出优势腐败菌并对其进行形态学鉴定、分子生物... 详细信息

目的:为避免微生物生长引起的大球盖菇褐变和腐败,亟待开展大球盖菇腐败菌种类的相关研究,并为探究贮藏保鲜技术提供理论依据。方法:对大球盖菇的腐败菌进行分离、纯化,通过致腐性分析筛选出优势腐败菌并对其进行形态学鉴定、分子生物学鉴定及生长特性研究。结果:分离得到镰刀菌属16株、曲霉属14株,根霉属4株。通过致腐性分析筛选出四种致腐性强的腐败菌,经形态学和分子生物学手段鉴定其分别为假嗜花镰刀菌(Fusarium pseudoanthophilum)、黑曲霉(Aspergillus niger)、单孢根霉菌(Rhizopus azygosporus)和产紫蓝状菌(Talaromyces purpureogenus)。对四种腐败菌的生长特性进行分析,发现其最适生长温度为25~28℃。温度为4~10℃和35~55℃时腐败菌生长缓慢,60℃时腐败菌无法生长。其最适生长pH为7.0左右,pH为13.0时腐败菌无法生长。结论:大球盖菇采后贮藏在低温和适当的碱性环境可抑制腐败菌的生长繁殖,利于大球盖菇贮藏保鲜。

关键词：大球盖菇腐败菌分离鉴定

一类非齐次非线性Schrödinger方程驻波的轨道稳定性

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

数学物理学报（A辑） 2024年第2期44卷 476-483页

作者：刘鑫艳李晓光四川师范大学数学科学学院&可视化计算与虚拟现实四川省重点实验室成都610066

该文主要研究一类非齐次非线性Schrödinger方程在质量次临界条件下驻波的存在性和轨道稳定性.通过一个变分原理,讨论了约束变分问题极小化序列的紧性,并由此得到驻波的存在性,进一步证明了驻波的轨道稳定性.

关键词：极小化序列紧性驻波的轨道稳定性

在线全文

学校读者我要写书评

暂无评论

网络视听行业版权保护的困境及发展路径

长沙大学学报 2024年第3期38卷 9-14页

作者：张梦刘歆妍长沙学院马栏山新媒体学院湖南长沙410022

网络视听行业的迅猛发展,为经济社会的健康有序发展注入了强心剂。优质的版权保护生态,有利于网络视听行业高质量发展,也有利于版权强国建设。随着数字技术迭代加速发展,版权侵权问题愈演愈烈,对全行业健康发展造成了不良影响。文章立... 详细信息

网络视听行业的迅猛发展,为经济社会的健康有序发展注入了强心剂。优质的版权保护生态,有利于网络视听行业高质量发展,也有利于版权强国建设。随着数字技术迭代加速发展,版权侵权问题愈演愈烈,对全行业健康发展造成了不良影响。文章立足网络视听行业版权保护现状,对网络视听行业版权保护困境进行分析,探讨网络视听行业版权保护生态健康发展的路径:个人层面,加强版权意识和维权本领;平台层面,加强监管责任;国家层面,加强立法、司法、行政机关的合作。

关键词：网络视听行业版权保护发展路径

在线全文

学校读者我要写书评

暂无评论

元宇宙视域下的AI主播

长沙大学学报 2024年第1期38卷 31-36页

作者：刘歆妍张梦长沙学院马栏山新媒体学院湖南长沙410022

元宇宙概念的引爆,触发了AI主播与职业主持人之间深层次的互动交流和更紧密的关系链接。文本传播形态、新闻信息生产以及新型媒介传播等将进一步虚实共融。AI主播在审美向度、时空成本、专业水准、艺德恒守、内容生成等方面均呈现显著... 详细信息

元宇宙概念的引爆,触发了AI主播与职业主持人之间深层次的互动交流和更紧密的关系链接。文本传播形态、新闻信息生产以及新型媒介传播等将进一步虚实共融。AI主播在审美向度、时空成本、专业水准、艺德恒守、内容生成等方面均呈现显著优势。面对AI主播带来的一系列挑战,转变理念,人机融合共生;人机协同,实现良性深融;强基固本,主播角色转型;合规前置,伦理守正,营造良好的数字生态将成为有效的应对策略。

关键词：元宇宙 AI主播职业主持人

On the cationic nature of lithium polysulfide in lithium-sulfur batteries

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第3期34卷 5-6页

作者： Yu Yan xinyan liu Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China

Lithium-sulfur(Li-S) battery, with an ultra-high theoretical energy density of 2600 Wh/kg, is inevitably deemed as one of the most promising alternatives for the state-of-the-art lithium-ion(Li-ion) batteries [1]. As a typical conversion-type of batteries, Li-S batteries comply multi-electron transfer and multiphase transformation between elemental S and lithium sulfide(Li_(2)S) during charging/discharging, accompanied by a series of dissolved LiPSs with a general formula of Li_(2)Sn(n=4, 6 or 8) [2].

关键词： battery lithium sulfide