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Repurposing Ancient Viral Tools for Precision Gene Therapy
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作者 YAN Fusheng 《Bulletin of the Chinese Academy of Sciences》 2025年第1期36-39,共4页
The 2024 development of a precision-engineered retrotransposon system marked a significant milestone in mammalian genome-editing research.As appeared in the July 8 issue of Cell,this methodological breakthrough establ... The 2024 development of a precision-engineered retrotransposon system marked a significant milestone in mammalian genome-editing research.As appeared in the July 8 issue of Cell,this methodological breakthrough established a novel framework for site-specific gene delivery through repurposing ancient viral tools. 展开更多
关键词 repurposing ancient viral tools site specific gene delivery ancient viral tools precision gene therapy retrotransposon system
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Breaking barriers: MS-BDF tools in the quality control of insect-derived traditional Chinese medicine 被引量:1
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作者 Caixia Yuan Dandan Zhang +2 位作者 Hairong Zhang Jiyang Dong Caisheng Wu 《Journal of Pharmaceutical Analysis》 2025年第6期1403-1405,共3页
Insect-derived traditional Chinese medicine(TCM)constitutes an essential component of TCM,with the earliest records found in“52 Bingfang”(Prescriptions of fifty-two diseases,which is one of the earliest Chinese medi... Insect-derived traditional Chinese medicine(TCM)constitutes an essential component of TCM,with the earliest records found in“52 Bingfang”(Prescriptions of fifty-two diseases,which is one of the earliest Chinese medical prescriptions). 展开更多
关键词 traditional chinese medicine tcm constitutes chinese medical prescriptions prescriptions fifty two diseases ms bdf tools insect derived traditional chinese medicine quality control breaking barriers TCM
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Planning Tools for Climate-Neutral and Livable Neighborhoods
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作者 Oskar Mair am Tinkhof 《Journal of Civil Engineering and Architecture》 2025年第5期237-241,共5页
Today city planners are confronted with two global trends:on one hand,living space is getting less due to urbanization;on the other hand,demands on living space are constantly rising as for example through stricter cl... Today city planners are confronted with two global trends:on one hand,living space is getting less due to urbanization;on the other hand,demands on living space are constantly rising as for example through stricter climate and energy political objectives based on the Paris Agreement.Therefore,it will be necessary to take into account—near urban planning and social aspects—also the climate compatibility as one central aspect in the construction of buildings,settlements,districts or neighborhoods.To identify and to push successful concepts,Austria has developed a planning tool that allows planning,assessing and ensuring high quality standards of neighborhoods.As the tool has been highly successful,additional planning tools are being developed for specific topics such as“PED—Positive Energy Districts”,“NEB—New European Bauhaus”and“CND—Climate Neutral Districts”.Central quantitative and qualitative criteria—which have been elaborated in the recent years—will be presented in this paper. 展开更多
关键词 URBANIZATION Paris Agreement neighborhoods planning tools criteria.
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Diagnostic utility of sepsis screening tools,procalcitonin,and Creactive protein in nosocomial fever of unknown origin
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作者 Shashikant Saini Sapna Pahil +3 位作者 Ritin Mohindra Naresh Sachdeva Navneet Sharma Ashok K Pannu 《World Journal of Critical Care Medicine》 2025年第3期251-262,共12页
BACKGROUND Nosocomial fever of unknown origin(nFUO)is a frequent and challenging diagnostic entity,encompassing diverse infectious and non-infectious etiologies.Timely identification is crucial,yet evidence on the dia... BACKGROUND Nosocomial fever of unknown origin(nFUO)is a frequent and challenging diagnostic entity,encompassing diverse infectious and non-infectious etiologies.Timely identification is crucial,yet evidence on the diagnostic accuracy of commonly employed sepsis screening tools and biomarkers remains sparse.We hypothesized that these tools and biomarkers measured at fever onset could distinguish infectious from non-infectious causes of nFUO in critically ill adults.AIM To evaluate the diagnostic utility of sepsis tools and biomarkers in identifying infectious causes of nFUO.METHODS This prospective observational study included patients admitted to the Acute Care Emergency Medicine Unit,Postgraduate Institute of Medical Education and Research,Chandigarh,India(July 2023 to December 2024).nFUO was defined by Durack and Street criteria.Diagnostic performance of sepsis screening tools(systemic inflammatory response syndrome,Sequential Organ Failure Assessment,quick Sequential Organ Failure Assessment,National Early Warning Score,and Modified Early Warning Score)and biomarkers[procalcitonin(PCT),C-reactive protein(CRP)]at fever onset was assessed using receiver operating characteristic curve analysis.RESULTS Of 80 cases(mean age 42.9±16.5 years;80% male),42.5% had infectious causes,38.7% non-infectious,and 18.8% remained undiagnosed.Pneumonia(26.2%)and bloodstream infections(11.2%)were the most common infectious etiologies,while central fever and thrombophlebitis(each 7.5%)were predominant among non-infectious causes.Sepsis tools showed poor diagnostic accuracy,with area under the receiver operating characteristic curve(AUC)values close to 0.5.PCT demonstrated modest performance(AUC=0.61;optimal cut-off:0.85μg/L),while CRP was paradoxically higher in non-infectious cases(AUC=0.45).Overall mortality was 20% and was highest among undiagnosed patients(33.3%).Fever duration and hospitalization length were significantly greater in infectious cases.CONCLUSION Sepsis tools,PCT,and CRP have limited utility in identifying infectious causes of nFUO in critically ill adults and should not solely guide initial decision-making. 展开更多
关键词 Critical care Fever of unknown origin NOSOCOMIAL SEPSIS Screening tools PROCALCITONIN C-reactive protein
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The Nuances of Employee Selection Tools in Organizations:A Comprehensive Analysis of Modern Recruitment Methodologies
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作者 Sunny Aqualambeng 《Management Studies》 2025年第4期161-167,共7页
Employee selection is a critical process that directly impacts organizational performance,productivity,and strategic success.This comprehensive article explores the multifaceted landscape of contemporary employee sele... Employee selection is a critical process that directly impacts organizational performance,productivity,and strategic success.This comprehensive article explores the multifaceted landscape of contemporary employee selection tools,examining their theoretical foundations,practical applications,psychological underpinnings,and empirical effectiveness.By systematically analyzing various selection methodologies,this research provides insights into the complex decision-making processes that organizations employ to identify,evaluate,and recruit top talent.The article critically evaluates the reliability,validity,advantages,and limitations of each selection tool,offering a nuanced perspective on their implementation and potential organizational impact. 展开更多
关键词 employee selection recruitment tools personnel assessment talent acquisition organizational psychology human resource management
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Thermal Error Modeling and Compensation Method for Spindle of Five-Axis CNC Machine Tools
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作者 Dongjun He 《控制工程期刊(中英文版)》 2025年第2期1-6,共6页
Thermal errors in CNC machine tools,particularly those involving the spindle,significantly affect machining accuracy and performance.These errors,caused by temperature fluctuations in the spindle and surrounding compo... Thermal errors in CNC machine tools,particularly those involving the spindle,significantly affect machining accuracy and performance.These errors,caused by temperature fluctuations in the spindle and surrounding components,result in dimensional deviations that can lead to poor part quality and reduced precision in high-speed manufacturing processes.This paper explores thermal error modeling and compensation methods for the spindle of five-axis CNC machine tools.A detailed analysis of the heat generation,transfer mechanisms,and finite element analysis(FEA)is presented to develop accurate thermal error models.Compensation techniques,such as model-based methods,sensor-based methods,real-time compensation algorithms,and hybrid approaches,are critically reviewed.This study also discusses the challenges in real-time compensation and the integration of thermal error compensation with machine tool control systems.The objective is to provide a comprehensive understanding of thermal error phenomena and their compensation strategies,ultimately contributing to the enhancement of machining accuracy in advanced manufacturing applications. 展开更多
关键词 CNC Machine tools Thermal Errors SPINDLE Finite Element Analysis Thermal Error Modeling Compensation Techniques Real-Time Compensation
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Childbirth experience assessment tools based on COSMIN guidelines:A systematic review
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作者 Yifan Cheng Ruxue Bai +2 位作者 Siyu Shan Xinmiao Zhao Chunling Xia 《International Journal of Nursing Sciences》 2025年第1期89-95,I0005,共8页
Objective:This study aimed to systematically evaluate the measurement characteristics and methodological quality of childbirth experience assessment tools,with a view to informing the selection of healthcare professio... Objective:This study aimed to systematically evaluate the measurement characteristics and methodological quality of childbirth experience assessment tools,with a view to informing the selection of healthcare professionals who can provide high-quality assessment tools.Method:A systematic search was performed on specific databases:PubMed,Web of Science,Embase,CINAHL,SinoMed,China National Knowledge Infrastructure(CNKI),and Wanfang,from inception to February 29,2024.The researchers retrieved studies on the measurement attributes of the childbirth experience assessment tool,and traced back the references of the included studies to supplement relevant literature.According to the inclusion and exclusion criteria,screening and data extraction were independently undertaken by two reviewers.Two researchers individually used the Consensus-based Standards for the Selection of Health Measurement Instruments(COSMIN)Risk of Bias Checklist to assess the methodological quality of the scale,applied the COSMIN criteria to evaluate the measurement properties of the scale,and used a modified Grading of Recommendations,Assessment,Development,and Evaluation(GRADE)system to assess the certainty of evidence.Result:A total of 15 studies were included to evaluate the psychometric properties of 11 childbirth experience assessment tools(including different language versions).Eight studies’methodological quality of content validity was doubtful,and the remaining studies did not report content validity.None of the tools reported measurement error,cross-cultural validity,or responsiveness.In light of the questionable or unreported content validity of the tools,the evidence quality was deemed moderate or below.Consequently,the 11 assessment tools were recommended as grade B.Conclusion:In contrast,the Questionnaire for Assessing the Childbirth Experience(QACE)is recommended for provisional use,given its relatively good methodological and measurement attributes and appropriate content for evaluation.However,further validation of other measurement properties is needed. 展开更多
关键词 Assessment tools COSMIN guidelines Childbirth experience Systematic review
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The Role of Digital Tools in Enhancing Vocabulary Acquisition in Second Foreign Language Learning
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作者 Chunhua Ren Lin Su 《Journal of Contemporary Educational Research》 2025年第7期376-381,共6页
The paper aims to examine the application of multimedia technology in expanding vocabulary in second language acquisition.Incorporating innovative technology such as mobile applications,gaming applications,websites,an... The paper aims to examine the application of multimedia technology in expanding vocabulary in second language acquisition.Incorporating innovative technology such as mobile applications,gaming applications,websites,and other related online tools has increased learners’vocabulary mastery,engagement,and motivation levels.Interactional processes like media-embedded objects,teach-learning capacity algorithms,and feedback help learners receive the course in a personalized way that considers individual learning patterns or abilities.However,there are the following challenges:accessibility issues,total reliance on technology,and issues related to privacy.The following challenges affecting learning that arise from using gadgets:the digital divide,limited device access,and environmental issues that may distract a learner in a technology-enabled environment.Moreover,the security issue for data and the ethical question of users’information remain important too.Hence,the paper provides arguments that although these technologies contribute significantly to vocabulary acquisition,the challenge that emerges should be addressed by integrating technology in teaching and learning alongside conventional methods for vocabulary acquisition,which is a practical language acquisition tool that should not be monopolized. 展开更多
关键词 Digital tools Vocabulary acquisition Second language learning GAMIFICATION
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Advancing Mental Health Care:A Comprehensive Review of Digital Tools and Technologies for Enhancing Diagnosis,Treatment,and Wellness
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作者 Muhammad Khalid Anser Agha Amad Nabi +2 位作者 Ishfaq Ahmad Muhammad Moinuddin Qazi Abro Khalid Zaman 《Health Care Science》 2025年第3期163-178,共16页
An individual's mental health influences their capacity to think effectively,feel emotionally stable,and perform daily activities.As mental health concerns become more prevalent worldwide,new awareness and diagnos... An individual's mental health influences their capacity to think effectively,feel emotionally stable,and perform daily activities.As mental health concerns become more prevalent worldwide,new awareness and diagnostic and treatment tactics are needed.Digital tools and technology are helping solve these problems by providing scalable,tailored solutions for large populations.This detailed review examines mental health‐promoting internet tools.Smartphone applications,web‐based therapy systems,wearable tech,artificial intelligence‐powered resources,and virtual reality(VR)technologies were evaluated for efficacy and side effects.PubMed,PsycINFO,Scopus,IEEE Xplore,and Google Scholar were carefully searched.Search terms included“digital mental health tools,”“online therapy,”and“AI in mental health.”Randomized controlled trials,cohort studies,cross‐sectional studies,systematic reviews,and meta‐analyses of digital technology and mental health were included from among the literature published after 2010.Cognitive behavioral therapy methods,mood monitoring,and mindfulness exercises are among the numerous features of smartphone applications that have been demonstrated to mitigate symptoms of anxiety,depression,and tension.Online therapy platforms let marginalized individuals obtain therapy remotely.Wearable technology may detect heart rate,blood pressure,and sleep length,which may reveal mental health difficulties.Chatbots employ machine learning algorithms and natural language processing to deliver customized support and show promise for quick intervention.Exposure therapy for anxiety and trauma is increasingly using virtual reality environments.Although digital mental health therapies face challenges in relation to data privacy,limited long‐term efficacy,and technological inequality,digital technologies are modernizing mental healthcare.By offering inexpensive and effective alternatives to traditional therapies,digital technologies may help healthcare systems meet the growing demand for mental health services and overall well‐being. 展开更多
关键词 artificial intelligence digital mental health tools mental health interventions online therapy platforms virtual reality therapy wearable device
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Advancing large language models as patient education tools for inflammatory bowel disease
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作者 Carlos M Ardila Daniel González-Arroyave Jaime Ramírez-Arbeláez 《World Journal of Gastroenterology》 2025年第20期113-116,共4页
This article evaluates the transformative potential of large language models(LLMs)as patient education tools for managing inflammatory bowel disease.The discussion highlights their ability to deliver nuanced and perso... This article evaluates the transformative potential of large language models(LLMs)as patient education tools for managing inflammatory bowel disease.The discussion highlights their ability to deliver nuanced and personalized infor-mation,addressing limitations in traditional educational materials.Key consider-ations include the necessity for domain-specific fine-tuning to enhance accuracy,the adoption of robust evaluation metrics beyond readability,and the integration of LLMs with clinical decision support systems to improve real-time patient education.Ethical and accessibility challenges,such as algorithmic bias,data privacy,and digital literacy,are also examined.Recommendations emphasize the importance of interdisciplinary collaboration to optimize LLM integration,en-suring equitable access and improved patient outcomes.By advancing LLM technology,healthcare can empower patients with accurate and personalized information,enhancing engagement and disease management. 展开更多
关键词 Patient education Inflammatory bowel disease Large language models Clinical decision support systems Health technology ethics Digital health tools
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The assessment tools and influencing factors of benefit finding in patients with chronic diseases: a scoping review
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作者 Xiao-Ge Ding Yin-Ji Jin 《Nursing Communications》 2025年第1期1-8,共8页
To describe and analyze the current status of benefit-finding research in patients with chronic diseases and to provide a reference for clinical practice and future research in this field.Using Arksey and O’Malley’s... To describe and analyze the current status of benefit-finding research in patients with chronic diseases and to provide a reference for clinical practice and future research in this field.Using Arksey and O’Malley’s scoping review methodology as a framework,we searched PubMed,Web of Science,Science Direct,and CINAHL(4 English databases);and China National Knowledge Infrastructure,the VIP Database for Chinese Technical Periodicals,the Wan Fang Database and China Biomedical Database(4 Chinese databases)for literature on benefit finding in patients with chronic diseases,with a search time frame of construction to April 20,2024,and the literature was screened,extracted,and summarized.A total of 44 papers were included,comprising 18 in Chinese and 26 in English.Among them,a total of 19 assessment tools were used,and the influential factors investigated were categorized into socio-demographic characteristics,disease-related characteristics,psychological and behavioral characteristics,coping styles,and social support.Benefit finding is found to be a positive psychological experience and important for patients with chronic diseases,and the influencing factors are complex and diverse,with a wide range of assessment tools.However,domestic tools lack autonomy and specificity.Clinical caregivers and staff should develop relevant assessment tools and formulate a personalized research plan based on the characteristics of patients with chronic diseases in China to promote the adoption of healthy lifestyles by patients with chronic diseases,improve their self-management ability,and provide a practical basis for improving the quality of life of patients with chronic diseases. 展开更多
关键词 patients with chronic diseases benefit finding assessment tools scoping review
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Research on the Influencing Mechanism of College Students’ Reliance on AI Tools and Weakened Learning Ability and Educational Coping Strategies
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作者 Xiang Yuan Ling Peng 《Journal of Contemporary Educational Research》 2025年第6期80-86,共7页
With the rapid popularization of artificial intelligence technology in the field of higher education,college students are increasingly dependent on AI tools such as ChatGPT,automatic writing assistants,and intelligent... With the rapid popularization of artificial intelligence technology in the field of higher education,college students are increasingly dependent on AI tools such as ChatGPT,automatic writing assistants,and intelligent translators.Behind the convenience and efficiency,a decline trend in students’core learning abilities such as autonomous learning ability,critical thinking ability,and knowledge construction ability has gradually emerged.This study aims to explore the interactive logical mechanism between college students’reliance on AI tools and the weakening of their learning abilities,and on this basis,propose practical and feasible educational intervention strategies.Research has found that while AI tools lower the learning threshold,they also weaken students’cognitive investment and independent thinking abilities,further intensifying their reliance on technology.In this regard,this paper proposes a three-dimensional intervention path based on guided usage,ability compensation,and value reconstruction to achieve the collaborative improvement of students’technical usage ability and learning ability.This research has certain theoretical value and practical enlightenment significance for solving the structural predicament of higher education in the intelligent era. 展开更多
关键词 Reliance on AI tools Learning ability Coping strategy Interactive logic
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Accuracy allocation method for five-axis machine tools based on geometric error cost sensitivity prioritizing tool direction deviation 被引量:1
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作者 Xiaojian LIU Ao JIAO +7 位作者 Yang WANG Guodong YI Xiangyu GAO Xiaochen ZHANG Yiming ZHANG Yangjian JI Shuyou ZHANG Jianrong TAN 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 2025年第7期635-651,共17页
Accuracy allocation is crucial in the accuracy design of machining tools.Current accuracy allocation methods primarily focus on positional deviation,with little consideration for tool direction deviation.To address th... Accuracy allocation is crucial in the accuracy design of machining tools.Current accuracy allocation methods primarily focus on positional deviation,with little consideration for tool direction deviation.To address this issue,we propose a geometric error cost sensitivity-based accuracy allocation method for five-axis machine tools.A geometric error model consisting of 4l error components is constructed based on homogeneous transformation matrices.Volumetric points with positional and tool direction deviations are randomly sampled to evaluate the accuracy of the machine tool.The sensitivity of each error component at these sampling points is analyzed using the Sobol method.To balance the needs of geometric precision and manufacturing cost,a geometric error cost sensitivity function is developed to estimate the required cost.By allocating error components affecting tool direction deviation first and the remaining components second,this allocation scheme ensures that both deviations meet the requirements.We also perform numerical simulation of a BC-type(B-axis and C-axis type)five-axis machine tool to validate the method.The results show that the new allocation scheme reduces the total geometric error cost by 27.8%compared to a uniform allocation scheme,and yields the same positional and tool direction machining accuracies. 展开更多
关键词 Five-axis machine tool Accuracy allocation Geometric error modeling Error cost sensitivity Tool direction deviation priority
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优先级Petri网的CPN Tools仿真模型研究 被引量:7
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作者 王胜德 胡望斌 徐宗昌 《系统仿真学报》 EI CAS CSCD 北大核心 2008年第3期814-816,共3页
优先级概念的引入,增强了有色Petri网的描述能力,但同时也导致了重复开发相似的仿真工具,造成了极大的浪费。通用的有色Petri网仿真工具CPN Tools支持功能强大的元语言(ML),扩展性比较强。在CPN Tools中利用反库所(anti place)、列表(li... 优先级概念的引入,增强了有色Petri网的描述能力,但同时也导致了重复开发相似的仿真工具,造成了极大的浪费。通用的有色Petri网仿真工具CPN Tools支持功能强大的元语言(ML),扩展性比较强。在CPN Tools中利用反库所(anti place)、列表(list)和元语言(ML)等方法建立了变迁、库所和托肯三种类型优先级Petri网的仿真模型,并通过示例表明了方法的有效性,这对于优先级Petri网的仿真具有重要意义。 展开更多
关键词 有色PETRI网 仿真模型 优先级 CPN tools 反库所 列表 元语言
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基于Arc Hydro Tools的涪江流域特征自动提取分析 被引量:7
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作者 康俊 孙佳 程炳岩 《西南师范大学学报(自然科学版)》 CAS 北大核心 2017年第6期83-87,共5页
以涪江流域为例,基于1∶5万和1∶25万两种比例尺数字高程模型(DEM),利用Arc Hydro Tools对DEM预处理后进行流域提取,分析通过不同方案提取的河网、流域面积等相关参数,同时针对不同分辨率河网出现差异地段的地形坡度和地形标准差进行分... 以涪江流域为例,基于1∶5万和1∶25万两种比例尺数字高程模型(DEM),利用Arc Hydro Tools对DEM预处理后进行流域提取,分析通过不同方案提取的河网、流域面积等相关参数,同时针对不同分辨率河网出现差异地段的地形坡度和地形标准差进行分析.实验结果表明:提取结果的精度在总体上是符合要求的,但是在地势平坦区域人类活动干扰较大的地区,提取的结果与实际相差较大.从提取的效率和实验结果的精度两方面来看,基于Arc Hydro Tools的流域特征自动提取是切实可行的. 展开更多
关键词 ARC HYDRO tools DEM 自动提取 流域特征 坡度 地形标准差
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RSI River Tools系统及其应用介绍 被引量:2
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作者 张国义 房明惠 +3 位作者 徐云 黄刘生 陈国良 谭炳卿 《计算机应用》 CSCD 北大核心 2002年第8期38-40,共3页
RiverTools是ResearchSystemInc .研制的基于数字高程模型 (digitalelevationmodel,DEM)的流域地表水文要素特征信息 (如单元网格流模式、河网拓扑结构、流域及子流域边界等 )提取、分析与可视化显示的专业分析系统。值得一提的是 ,它是... RiverTools是ResearchSystemInc .研制的基于数字高程模型 (digitalelevationmodel,DEM)的流域地表水文要素特征信息 (如单元网格流模式、河网拓扑结构、流域及子流域边界等 )提取、分析与可视化显示的专业分析系统。值得一提的是 ,它是用RSI知名的研究与开发系统———交互式数据语言 (InteractiveDataLanguage ,IDL)开发的且与之高度集成 ,其所有的例程均可在IDL集成开发环境(IDLDE)中调用 ,这样就为研究者提供了一个从数据获取、分析到高级应用开发的良好手段。文中简要介绍了该系统的主要功能 ,并就其在水科学领域中的应用 (如流域河网水文水质数值模拟 ) 展开更多
关键词 RSI RIVER tools系统 水资源管理 地理信息系统
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Application of pre-alloyed powders for diamond tools by ultrahigh pressure water atomization 被引量:2
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作者 储志强 郭学益 +3 位作者 刘东华 谭彦显 李栋 田庆华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第10期2665-2671,共7页
Copper, iron and cobalt based pre-alloyed powders for diamond tools were prepared by ultrahigh pressure water atomization(UPWA) process. Pre-alloyed powders prepared by different processes including UPWA, convention... Copper, iron and cobalt based pre-alloyed powders for diamond tools were prepared by ultrahigh pressure water atomization(UPWA) process. Pre-alloyed powders prepared by different processes including UPWA, conventional water atomization (CWA) and elemental metal mechanical mixing (EMMM) were sintered to segments and then compared in mechanical properties, holding force between matrix and diamond, fracture morphology of blank and sintering diamond section containing matrix. The results showed that the pre-alloyed powder prepared by UPWA exhibits the best mechanical properties including the relative density, the hardness and the bending strength of matrix sinteredsegment. Sintered segments fractography of UPWA pre-alloyed powder indicatesmechanical mosaic strength and chemical bonding force between the pre-alloyed powder and the diamond, leading to the great increase in the holding force between matrix and diamond. The mechanical performance andthe service life of diamond tools were greatly improved by UPWA pre-alloyed powders. 展开更多
关键词 ultrahigh pressure water atomization pre-alloyed powders diamond tools sintered segments
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基于BRB-ArrayTools和GATHER工具对膀胱癌相关基因的挖掘及生物信息学分析 被引量:3
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作者 李飞 梁中锟 +4 位作者 荆玉明 石小军 陈三三 万沛 谭万龙 《临床泌尿外科杂志》 北大核心 2011年第11期852-855,共4页
目的:从分子水平探讨膀胱癌的发病机制,为临床诊疗提供新思路。方法:从公共基因芯片数据库(GEO)中下载人膀胱癌的相关基因芯片数据,使用BRB-ArrayTools软件对其进行分析,筛选差异基因;并利用GATHER工具进行生物信息学分析。结果:BRB分... 目的:从分子水平探讨膀胱癌的发病机制,为临床诊疗提供新思路。方法:从公共基因芯片数据库(GEO)中下载人膀胱癌的相关基因芯片数据,使用BRB-ArrayTools软件对其进行分析,筛选差异基因;并利用GATHER工具进行生物信息学分析。结果:BRB分析发现122个差异表达基因,其中上调55个,下调67个;GATHER分析发现这些差异基因的功能主要集中在细胞的生理过程、细菌凝聚反应的诱导作用、Jak-STAT和Toll-like受体的信号通路及细胞因子相互作用等生物学过程。结论:利用生物信息学方法能有效分析基因芯片数据并获取内在信息,为确定膀胱癌的早期诊断标志与治疗靶点提供新的思路。 展开更多
关键词 生物信息学 膀胱癌 基因表达谱 BRB ARRAY tools软件
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基于Arc Hydro Tools的祁连山国家公园小流域划分 被引量:5
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作者 高翔 党倩文 +3 位作者 孙小霞 常舒杭 李杰 闫安 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第4期500-505,511,共7页
以祁连山国家公园为研究区,基于30 m分辨率数字高程模型数据,利用Arc Hydro Tools水文数据模型与河网密度法,在确定最佳集水面积阈值的基础上提取河网并划分小流域,统计小流域的部分特征参数.结果表明,集水面积阈值与河网密度呈幂函数关... 以祁连山国家公园为研究区,基于30 m分辨率数字高程模型数据,利用Arc Hydro Tools水文数据模型与河网密度法,在确定最佳集水面积阈值的基础上提取河网并划分小流域,统计小流域的部分特征参数.结果表明,集水面积阈值与河网密度呈幂函数关系,祁连山国家公园最佳集水面积阈值为6000栅格数;河网提取结果与全国1∶250000三级水系流域数据集的河网套合差为2.62%,叠加至遥感图像对比,发现提取结果相较于全国1∶250000三级水系流域数据集更接近真实水系;共划分祁连山国家公园小流域5717个,约80%的小流域面积在3~50 km2.从提取效率和结果精度来看,Arc Hydro Tools模型与河网密度法相结合可较准确提取山地区域河网及小流域. 展开更多
关键词 Arc Hydro tools 河网密度法 河网提取 小流域划分 祁连山国家公园
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