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Research Methods Used for Developing Academic Wordlists: A Systematic Review of Studies Published Between 2000 and 2020
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作者 Mostafa Saeedi Reza Khany Khalil Tazik 《Chinese Journal of Applied Linguistics》 2025年第3期425-450,481,共27页
The learning of English academic vocabulary has been the focus of numerous studies from the time Coxhead(2000)developed the academic word list to the present day.Various researchers have emphasized the importance of p... The learning of English academic vocabulary has been the focus of numerous studies from the time Coxhead(2000)developed the academic word list to the present day.Various researchers have emphasized the importance of possessing academic vocabulary knowledge for academic success.Recognizing this importance,it is crucial for researchers,teachers,and learners to understand the progress made in academic word lists.This systematic review first identifies,describes,appraises,and synthesizes the development of academic word lists from 2000 to 2020.It then examines the methods used by researchers in developing academic word lists among 56 studies that meet the pre-established criteria.The word lists were classified based on some criteria such as word counting units,corpora types/sizes,and exclusion criteria.Limitations,suggestions for further study,and implications are also discussed.Additionally,recommendations for future word list establishment are provided to help advance the field of word list development. 展开更多
关键词 systematic review academic word list academic writing academic reading corpus study research method
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Synthesis of Reviews on Auscultation, Approaches, and Methods for Engineering Structures
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作者 Cheikh Ahmed Tidiane Ly Diogoye Diouf Séni Tamba 《International Journal of Geosciences》 CAS 2024年第10期765-773,共9页
Topometric auscultation is used to monitor the durability of structures, measure deformations linked to the structure of a structure or to the movement of the ground over a part of the globe, set up warning systems, e... Topometric auscultation is used to monitor the durability of structures, measure deformations linked to the structure of a structure or to the movement of the ground over a part of the globe, set up warning systems, etc. It first appeared as a visual method and rapidly evolved through the various techniques used. Some of these techniques using topography are used in several fields (civil engineering, geodesy, topography, mechanics, nuclear engineering, hydraulics, physics, etc.). These topometric techniques have undergone major changes as a result of technological advances, growing needs in the monitoring of movements or deformations, increased requirements and new challenges. The methodology adopted depends on the measuring instrument used, the parameters to be estimated and access to the area to be measured. There are two types of methods: destructive and non-destructive. In addition to the visual method, they can also be classified as mechanical, physico-chemical, dynamometric, electrophysical and geometric. The estimated parameter varies according to the methodology adopted. It can be defined by coordinates, distances, potential, electrical resistance, etc. 展开更多
关键词 AUSCULTATION Engineering Structure Topometry method review
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Application of the External Treatment Method of Traditional Chinese Medicine in the Elderly Diabetic High-Risk Foot Based on the Theory of “Preventive Treatment of Disease”
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作者 Meilan Li Tongping Gu +1 位作者 Jie Ji Lifeng Ma 《Journal of Clinical and Nursing Research》 2025年第5期47-59,共13页
Diabetic foot(DF)has emerged as one of the most common chronic consequences of diabetes mellitus,characterized by prolonged disease duration,high treatment costs,a poor prognosis,and a high disability rate.Diabetic hi... Diabetic foot(DF)has emerged as one of the most common chronic consequences of diabetes mellitus,characterized by prolonged disease duration,high treatment costs,a poor prognosis,and a high disability rate.Diabetic high-risk foot is the early stage of diabetic foot,the“disease prevention”of“treating no disease”,which provides a critical window for clinical prevention and treatment.Traditional Chinese medicine(TCM)has emphasized the importance of preventive health care since ancient times.External therapies such as acupuncture,massage,acupoint injection,foot bath fumigation,and moxibustion have the advantages of simplicity,low cost,precise efficacy,and fewer side effects in preventing and treating diabetic high-risk foot.The multidisciplinary synergistic model formed by TCM complementary therapies and modern medical treatments,such as nutritional,peripheral nerve,and blood glucose regulation,provides new ideas for establishing standardized prevention and treatment protocols.In this paper,studies related to TCM-related complementary therapies for diabetic high-risk feet are systematically reviewed.Current advances in external application in TCM were described to better understand its effectiveness and safety in elderly patients. 展开更多
关键词 Diabetic high-risk foot External Chinese medicine treatment method Treatment of undiagnosed disorder review
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Development of analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates: A review 被引量:10
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作者 LIU Li-bin LIU Yan +3 位作者 LIN Jin-ming TANG Ning HAYAKAWA Kazuichi MAEDA Tsuneaki 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第1期1-11,共11页
In the present work, the different sample collection, pretreatment and analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates is systematacially reviewed, and the applications of the... In the present work, the different sample collection, pretreatment and analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates is systematacially reviewed, and the applications of these pretreatment and analytical methods for PAHs are compared in detail. Some comments on the future expectation are also presented. 展开更多
关键词 polycyclic aromatic hydrocarbons (PAHs) airborne particulates analytical methods review
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The State-of-the-Art Review on Applications of Intrusive Sensing,Image Processing Techniques,and Machine Learning Methods in Pavement Monitoring and Analysis 被引量:20
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作者 Yue Hou Qiuhan Li +5 位作者 Chen Zhang Guoyang Lu Zhoujing Ye Yihan Chen Linbing Wang Dandan Cao 《Engineering》 SCIE EI 2021年第6期845-856,共12页
In modern transportation,pavement is one of the most important civil infrastructures for the movement of vehicles and pedestrians.Pavement service quality and service life are of great importance for civil engineers a... In modern transportation,pavement is one of the most important civil infrastructures for the movement of vehicles and pedestrians.Pavement service quality and service life are of great importance for civil engineers as they directly affect the regular service for the users.Therefore,monitoring the health status of pavement before irreversible damage occurs is essential for timely maintenance,which in turn ensures public transportation safety.Many pavement damages can be detected and analyzed by monitoring the structure dynamic responses and evaluating road surface conditions.Advanced technologies can be employed for the collection and analysis of such data,including various intrusive sensing techniques,image processing techniques,and machine learning methods.This review summarizes the state-ofthe-art of these three technologies in pavement engineering in recent years and suggests possible developments for future pavement monitoring and analysis based on these approaches. 展开更多
关键词 Pavement monitoring and analysis The state-of-the-art review Intrusive sensing Image processing techniques Machine learning methods
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A Review on Evaluation Methods of Climate Modeling 被引量:1
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作者 ZHAO Zong-Ci LUO Yong HUANG Jian-Bin 《Advances in Climate Change Research》 SCIE 2013年第3期137-144,共8页
There is scientific progress in the evaluation methods of recent Earth system models(ESMs).Methods range from single variable to multi-variables,multi-processes,multi-phenomena quantitative evaluations in five layers(... There is scientific progress in the evaluation methods of recent Earth system models(ESMs).Methods range from single variable to multi-variables,multi-processes,multi-phenomena quantitative evaluations in five layers(spheres)of the Earth system,from climatic mean assessment to climate change(such as trends,periodicity,interdecadal variability),extreme values,abnormal characters and quantitative evaluations of phenomena,from qualitative assessment to quantitative calculation of reliability and uncertainty for model simulations.Researchers started considering independence and similarity between models in multi-model use,as well as the quantitative evaluation of climate prediction and projection efect and the quantitative uncertainty contribution analysis.In this manuscript,the simulations and projections by both CMIP5 and CMIP3 that have been published after 2007 are reviewed and summarized. 展开更多
关键词 EARTH system MODELS evaluation methods(metrics) QUANTITATIVE EVALUATIONS review
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A Review of Deepwater Pipeline Construction in the U.S. Gulf of Mexico-Contracts, Cost, and Installation Methods 被引量:1
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作者 Mark J. Kaiser 《Journal of Marine Science and Application》 CSCD 2016年第3期288-306,共19页
The offshore pipeline network in the U.S. Gulf of Mexico is the largest and most transparent system in the world. A review of deepwater projects in the region provides insight into construction cost and installation m... The offshore pipeline network in the U.S. Gulf of Mexico is the largest and most transparent system in the world. A review of deepwater projects in the region provides insight into construction cost and installation methods and the evolution of contract strategies. Pipeline projects are identified as export systems, infield flowline systems, and combined export and infield systems, and three dozen deepwater pipeline installations from 1980–2014 are described based on Offshore Technology Conference(OTC) and Society of Petroleum Engineers(SPE) industry publications and press release data. Export lines and infield flowlines are equally represented and many projects used a combination of J-lay, S-lay and reel methods with rigid steel, flexible line, and pipe-in-pipe systems. The average 2014 inflation-adjusted cost for pipeline projects based on OTC/SPE publications was $2.76 million/mi and ranged from $520 000/mi to $12.94 million/mi. High cost pipelines tend to be short segments or specialized pipeline. Excluding the two cost endpoints, the majority of projects ranged from $1 to $6 million/mi. The average inflation-adjusted cost to install deepwater pipelines in the U.S. Gulf of Mexico based on available public data is estimated at $3.1 million/mi. 展开更多
关键词 construction cost contract type empirical statistics installation methods deepwater pipeline review
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Mixed methods research in complementary and alternative medicine:a scoping review 被引量:1
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作者 DU Wanqing WANG Liuding +4 位作者 JIA Min LIANG Xiao LI Bo ZHANG Yunling LIAO Xing 《Journal of Traditional Chinese Medicine》 SCIE CSCD 2022年第4期652-666,共15页
OBJECTIVE:To update the current characteristics about the scope and quality of mixed methods research(MMR)in complementary and alternative medicine(CAM)after nearly 10 years.METHODS:A 5-stage approach for conducting a... OBJECTIVE:To update the current characteristics about the scope and quality of mixed methods research(MMR)in complementary and alternative medicine(CAM)after nearly 10 years.METHODS:A 5-stage approach for conducting a scoping review was adopted.Articles published on the top 10 journals in CAM with the highest impact factor in 2020 were screened for MMR.Information of included articles were extracted,and then synthesized to illustrate the current state.Methodological quality was evaluated according to the Mixed Method Appraisal Tool(MMAT)2018 version.RESULTS:A total of 55(55/2991,2%)articles using mixed methods were retrieved,including 17 medical studies and 38 ethnobotanical studies.We performed an in-depth analysis on the 17 medical studies,which studied cancer,stress,pain,fatigue,exercises,mindfulness intervention,herbal medicine use,art and acupuncture.Thirteen pilot studies applied MMR to evaluate the feasibility of interventions or programs(13/17,76%);phenomenology was inferred as the most common philosophical assumptions(13/17,76%);the most applied type of MMR was convergent design(16/17,94%);integration often took place at integration(12/17,71%).Among the 16 eligible studies for quality appraisal,majority were rated as good(14/16,88%),whereas two studies were rated as poorly described.Primarily,a poor rating was due to incomplete reporting of data analysis and citations in qualitative components;lack of confounder controlling and the sampling strategy in quantitative components;poor description of integration and justification for mixed methods.Comparing with the previous review,fewer MMR were published in 2020 in CAM,but the proportion of studies that clearly reported MMR has increased by 4 times(4%→15%).CONCLUSION:CAM researchers need to realize the benefits that MMR can have on conducting further health care research.Our findings highlight that applying MMR will be helpful to understand the complex dynamics and interdisciplinary nature of complex intervention.In addition,addressing a standardized reporting criteria for MMR is recommended. 展开更多
关键词 complementary therapies review biomedical research pilot projects mixed methods
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Effect of Climate Change on Water Resources and Water Management Practices: A Review of Research Methods and Findings with Special Reference to Australia
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作者 Gabriel Makuei Deng Makuei 《Journal of Earth Science and Engineering》 2016年第4期208-225,共18页
In this secondary research, published works on effect of climate change on water resources in other countries and in Australia were reviewed critically. Research question, objectives and assumptions were made to facil... In this secondary research, published works on effect of climate change on water resources in other countries and in Australia were reviewed critically. Research question, objectives and assumptions were made to facilitate this study. First, methods used for such studies and their results at global level were reviewed. Then Australian specific methods of study and findings were reviewed. More commonly, both globally and in Australia, simulations using long-term real data on selected climatic scenarios of global climatic models are projected for long-term future trends. The validity and certainty of predicted occurrences depend upon the closeness of real time data with scenarios to which they are projected. Even with these limitations, projections of already rising temperatures and declining rainfall on surface water and ground water availabilities show gradual decline in water availability leading to water stress both for human communities and ecosystems The role of human-induced emissions in hastening the degradation process has also been investigated. Conserving all available water, practising efficient water consumption and prudent water policies only can provide some relief from what is inevitable. 展开更多
关键词 Climate change water resources FINDINGS methods water management review
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A Review of Methods of Critical Discourse Analysis(second edition)
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作者 梁嘉齐 《海外英语》 2019年第8期123-124,共2页
This article gives an overview of Methods of Critical Discourse Analysis(second edition),which respectively introduces six approaches to do critical discourse analysis.Personal comments and suggestions on the book are... This article gives an overview of Methods of Critical Discourse Analysis(second edition),which respectively introduces six approaches to do critical discourse analysis.Personal comments and suggestions on the book are also presented.It is hoped that the article may help readers particularly who would want to grow and extent their interest in CDA better usher into the field. 展开更多
关键词 CRITICAL DISCOURSE Analysis review approach methodS
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A Review of Recent Research on Approaches and Methods in ESP Teaching in China
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作者 周园 《海外英语》 2013年第21期56-59,共4页
ESP,namely English for Specific Purposes,has become an integral part of English teaching in higher education.How ever,the majority of research on approaches in ESP teaching is focused on one specific method,which fail... ESP,namely English for Specific Purposes,has become an integral part of English teaching in higher education.How ever,the majority of research on approaches in ESP teaching is focused on one specific method,which fails to generalize the de velopment of ESP teaching in China.In this thesis,recent Chinese research on approaches and methods in ESP teaching is re viewed,including those in established framework and an innovative one.The advantages and limitations of each methods are ana lyzed and the possible suggestions are made with a view to promoting the research on approaches and methods in ESP teaching in a more all-round way. 展开更多
关键词 ESP review ENGLISH TEACHING TEACHING APPROACHES an
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Systematic Review of Graphical Visual Methods in Honeypot Attack Data Analysis
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作者 Gbenga Ikuomenisan Yasser Morgan 《Journal of Information Security》 2022年第4期210-243,共34页
Mitigating increasing cyberattack incidents may require strategies such as reinforcing organizations’ networks with Honeypots and effectively analyzing attack traffic for detection of zero-day attacks and vulnerabili... Mitigating increasing cyberattack incidents may require strategies such as reinforcing organizations’ networks with Honeypots and effectively analyzing attack traffic for detection of zero-day attacks and vulnerabilities. To effectively detect and mitigate cyberattacks, both computerized and visual analyses are typically required. However, most security analysts are not adequately trained in visualization principles and/or methods, which is required for effective visual perception of useful attack information hidden in attack data. Additionally, Honeypot has proven useful in cyberattack research, but no studies have comprehensively investigated visualization practices in the field. In this paper, we reviewed visualization practices and methods commonly used in the discovery and communication of attack patterns based on Honeypot network traffic data. Using the PRISMA methodology, we identified and screened 218 papers and evaluated only 37 papers having a high impact. Most Honeypot papers conducted summary statistics of Honeypot data based on static data metrics such as IP address, port, and packet size. They visually analyzed Honeypot attack data using simple graphical methods (such as line, bar, and pie charts) that tend to hide useful attack information. Furthermore, only a few papers conducted extended attack analysis, and commonly visualized attack data using scatter and linear plots. Papers rarely included simple yet sophisticated graphical methods, such as box plots and histograms, which allow for critical evaluation of analysis results. While a significant number of automated visualization tools have incorporated visualization standards by default, the construction of effective and expressive graphical methods for easy pattern discovery and explainable insights still requires applied knowledge and skill of visualization principles and tools, and occasionally, an interdisciplinary collaboration with peers. We, therefore, suggest the need, going forward, for non-classical graphical methods for visualizing attack patterns and communicating analysis results. We also recommend training investigators in visualization principles and standards for effective visual perception and presentation. 展开更多
关键词 Honeypot Data Analysis Network Intrusion Detection Visualization and Visual Analysis Graphical methods and Perception Systematic Literature review
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Epidemiology of biliary tract cancer in China:A narrative review
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作者 Jun Zhou Guang Tan +4 位作者 Lei Zhang Ganfeng Xie Wenting Chen Xijie Zhang Houjie Liang 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2024年第5期474-488,共15页
Biliary tract cancer(BTC)is a group of rare malignancies that affect the gallbladder and bile ducts.Although rare,BTC is becoming a significant public health burden in China,particularly among males and older individu... Biliary tract cancer(BTC)is a group of rare malignancies that affect the gallbladder and bile ducts.Although rare,BTC is becoming a significant public health burden in China,particularly among males and older individuals.The increasing trends in BTC incidence and mortality in China are influenced by various demographic,environmental,and lifestyle factors.In this review,we examine available epidemiological data on the incidence,mortality,prognosis,and trends of different BTC subtypes in China.We also discuss the challenges and opportunities for improving the prevention,diagnosis,and management of BTC in China,and identify areas for further research and intervention.The article aims to provide a better understanding of the epidemiological features of BTC in China and to inform public health strategies and clinical practice. 展开更多
关键词 Biliary tract cancer China epidemiologic methods review
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Two Cases of Complicated Rectovaginal Fistula Treated by Hanging Line Method Were Reported and Reviewed in the Literature
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作者 Hexia Du Yuqi Qiu +1 位作者 Sufei Wang Yong Chen 《Yangtze Medicine》 2022年第3期88-93,共6页
This paper retrospectively analyzes the complicated rectovaginal fistula in 2 cases after the successful treatment. Through literatures collected, with the difficulties and contradictions of the treatment of complicat... This paper retrospectively analyzes the complicated rectovaginal fistula in 2 cases after the successful treatment. Through literatures collected, with the difficulties and contradictions of the treatment of complicated rectovaginal fistula as the starting point, the currently used hanging line method, the advantage and deficiency of surgical treatment in recent years, and the change of treatment method were reviewed. We wish to explore which current treatments could be a better choice. 展开更多
关键词 Rectovaginal Fistula Hanging Line method Literature review
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Mapping ecosystem services in urban and peri-urban areas.A systematic review
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作者 Paulo Pereira Miguel Inácio +3 位作者 Luis Pinto Marius Kalinauskas Katarzyna Bogdzevic Wenwu Zhao 《Geography and Sustainability》 CSCD 2024年第3期491-509,共19页
Urban and peri-urban ecosystems are subjected to an intense impact.The demand for ecosystem services(ES)is higher in these areas.Nevertheless,despite the anthropogenic pressures,urban and peri-urban ecosystems supply ... Urban and peri-urban ecosystems are subjected to an intense impact.The demand for ecosystem services(ES)is higher in these areas.Nevertheless,despite the anthropogenic pressures,urban and peri-urban ecosystems supply important ES.Mapping is a crucial exercise to understand ES dynamics in these environments better.This work aims to systematically review mapping ES in urban and peri-urban areas studies,following the Preferred Reporting Items for Systematic Reviews and Meta-alpha Methods.A total of 207 studies were selected.The results show increased work between 2011 and 2023,mainly conducted in Europe and China.Most work were developed in urban areas and did not follow an established ES classification.Most studies focused on the ES supply dimension,the regulation and maintenance section.Regarding provisioning ES,most studies focused on Cultivating terrestrial plants for nutrition,regulating and maintainin g Atmospheric composition and conditions,and for cultural ES on Physical and experiential interactions with the natural environment.Quantitative methods were mostly applied following Indicator-based(secondary data:biophysical,socio-economic)models.Very few work validated the outputs.Several studies forecasted ES,primarily based on land use changes using CA-Markov approaches.This study provides an overview of the most mapped urban and peri-urban ES globally,the areas where more studies need to be conducted,and the methods developed. 展开更多
关键词 Systematic review Urban and peri-urban areas Ecosystem services MAPPING methodS
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Prevalence of Tuberculosis and Evolution in Diagnostic Methods over the Last 10 Years in Burkina Faso
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作者 Wendbenedo Yasmine Astrid Sana Tani Sagna +3 位作者 Ina Marie Angèle Traore Absatou Ky Ba Fatou Gueye Tall Jacques Simpore 《Advances in Infectious Diseases》 2024年第4期765-775,共11页
Introduction: Burkina Faso, a West African country, has also seen a resurgence in new cases of tuberculosis. It would be useful to have an overview of how prevalence and diagnostic methods have changed in recent years... Introduction: Burkina Faso, a West African country, has also seen a resurgence in new cases of tuberculosis. It would be useful to have an overview of how prevalence and diagnostic methods have changed in recent years. The aim of this study was to estimate the prevalence of tuberculosis in Burkina Faso over the past 10 years and to summarize the diagnostic methods used. Material and Methods: A review of studies published between 2014 and 2024 on the prevalence of tuberculosis in Burkina Faso and the diagnostic methods used were carried out using the “Preferred Reporting Items for Systematic Reviews and Meta-Analysis” (PRISMA). Relevant publications were selected from the PubMed/Medline, Embase, Google Scholar, and ScienceDirect databases. Results: Most of the studies on the prevalence of pulmonary tuberculosis in Burkina Faso found in this review were generally hospital-based and included both child and adult populations. Prevalence rates ranged from 15% to 63.36%, with a calculated overall prevalence of 31.58% [(n = 348;95% CI (26.86 - 36.30)] in the studies examined. The majority of authors used microscopy, which is the standard diagnostic method. Molecular techniques such as GeneXpert were associated with microscopy in over 70% of studies, compared with less than 30% for culture. Conclusion: At the end of this study, the number of reported cases fluctuated over the years. In terms of diagnostic methods, in the last 10 years, more specific molecular techniques have been introduced, along with the use of alternative samples to sputum for the detection of Mycobacterium tuberculosis. 展开更多
关键词 TUBERCULOSIS PREVALENCE Diagnostic methods review
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A REVIEW OF THE HISTORY OF CHINA'S MACHINE DESIGN METHODS AND THE PROSPECT
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作者 Yang Shuzi & Liu Kerning(Huazhong University of Science and Technology, Wuhan) CAS Member and president of Huazhong University of Science and Technology 《Bulletin of the Chinese Academy of Sciences》 1997年第2期175-184,共10页
This paper examines the history of China’s machine design methods and its status quo. First of all, it discusses machine design methods in ancient China. (1)The design idea of creation by the intelligent and expositi... This paper examines the history of China’s machine design methods and its status quo. First of all, it discusses machine design methods in ancient China. (1)The design idea of creation by the intelligent and exposition by the ingenious. (2)The design principle of the dependence of workmanship on criteria. (3)A macroscopic view of the object of design. (4)The design method of manufacture emphasizing shape. (5)Technological requirements on excellent material and consummate skill. Second, it discusses machine design ideas in ancient China. (1)The system idea in machine design, (2)The idea of machine design.(3)The idea of standardization in machine design. (4)The idea of automation in machine design. Finally, it discusses the status quo and a look ahead of the theory of machine design in China. 展开更多
关键词 A review OF THE HISTORY OF CHINA’S MACHINE DESIGN methodS AND THE PROSPECT
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国家人体生物监测项目中化学污染物靶向定量分析的实验室质量控制策略 被引量:1
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作者 杨艳伟 张续 +14 位作者 林潇 孙琦 付慧 陆一夫 邱天 张卓娜 谢琳娜 张海婧 张淼 胡小键 曲英莉 赵峰 吕跃斌 朱英 施小明 《色谱》 北大核心 2025年第6期559-570,共12页
国家人体生物监测项目于2016年正式启动,该项目的目标是通过对我国人群进行现场流行病学调查,并监测人体生物样本中的环境污染物,来获取具有代表性的环境污染物在普通人群中的暴露负荷数据,为政府制定环境污染防控政策和采取相应干预措... 国家人体生物监测项目于2016年正式启动,该项目的目标是通过对我国人群进行现场流行病学调查,并监测人体生物样本中的环境污染物,来获取具有代表性的环境污染物在普通人群中的暴露负荷数据,为政府制定环境污染防控政策和采取相应干预措施提供重要的科学依据。为了获取人群生物样本中准确且可比的化学污染物数据,在国家人体生物监测项目的框架下,实验室从分析方法、实验空白到检测过程,对化学污染物的靶向定量分析实施了多维度的质量控制措施。项目的质量控制程序分为两个阶段进行:(1)检测前阶段中生物监测分析方法的验证、空白的筛查与控制;(2)检测阶段中大规模样本分析过程的质量控制。应用于国家人体生物监测项目的分析方法均需经过验证程序,以全面评估方法的性能,验证的重点包括方法检出限和方法定量限、基质效应、稳定性及残留与稀释。所有监测指标均需通过空白筛查程序,以识别、消除或降低实验中的空白干扰,确保每批次的空白测定结果均低于方法检出限。实验室采用内部质量控制与外部质量控制相结合的方式,具体措施主要包括:(1)10类监测指标的方法验证及检测过程均使用包括美国国家标准与技术研究院(NIST)、欧洲标准局(ERM)及中国标准物质中心在内生产的生物基质标准物质,以确保方法的准确性及溯源性;(2)15类监测指标使用商品质控样和内部质控样,以评价测试过程的稳定性;(3)9类共60项监测指标参与德国外部质量评估计划(G-EQUAS),并取得了满意的结果;(4)15类监测指标使用盲样。多维度的质量控制措施为生成高质量的生物监测数据提供了专业支撑。 展开更多
关键词 国家人体生物监测项目 质量控制 方法验证 实验空白 综述
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铅基织构压电陶瓷的发展历程、现状与挑战 被引量:1
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作者 吴杰 杨帅 +3 位作者 王明文 李景雷 李纯纯 李飞 《无机材料学报》 北大核心 2025年第6期575-586,共12页
压电材料是一种重要的信息功能材料,能够实现机械能与电能之间的相互转化。近年来,织构压电陶瓷技术已经成为研发新一代高性能压电材料的重要途径。通过调控晶粒的取向排布,织构压电陶瓷表现出类似压电单晶的优异压电性能和机电性能,并... 压电材料是一种重要的信息功能材料,能够实现机械能与电能之间的相互转化。近年来,织构压电陶瓷技术已经成为研发新一代高性能压电材料的重要途径。通过调控晶粒的取向排布,织构压电陶瓷表现出类似压电单晶的优异压电性能和机电性能,并具有良好的温度稳定性。同时,作为多晶陶瓷,织构陶瓷保留了传统陶瓷材料的制备加工简单、机械性能良好及适用共型异形等优点。本文围绕钛酸铅(PbTiO_(3),PT)基压电材料体系,从织构压电陶瓷制备技术、织构用籽晶模板以及织构压电陶瓷技术的发展历程和研究现状等方面,对相关研究结果进行系统梳理,总结织构压电陶瓷技术优势。在此基础上,分析了铅基织构压电陶瓷的模板筛选理论、织构陶瓷微观结构和宏观性能之间的构效关系,以及基于织构压电陶瓷的压电器件开发等方面存在的科学难题和未来挑战。本文旨在全面介绍织构压电陶瓷技术和理论,帮助研究者深入认识织构压电陶瓷技术,推动高性能压电陶瓷研发和制备技术发展,进而助力我国高端压电器件的创新和跨越发展。 展开更多
关键词 织构陶瓷 铅基压电材料 模板籽晶生长法 片状微晶模板 综述
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集合预报进展、挑战及展望
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作者 陈静 朱跃建 +11 位作者 段晚锁 智协飞 闵锦忠 李晓莉 邓国 袁慧玲 冯杰 杜钧 李巧萍 龚建东 沈学顺 穆穆 《气象学报》 北大核心 2025年第3期480-502,共23页
系统概述了集合预报的发展历程和中外主要的集合预报方法,重点回顾了中国全球/区域集合预报系统的发展历程、集合预报系统业务技术、初值扰动技术、模式扰动技术和集合预报应用的进步,以及与当前国际主要数值预报中心集合预报水平的对... 系统概述了集合预报的发展历程和中外主要的集合预报方法,重点回顾了中国全球/区域集合预报系统的发展历程、集合预报系统业务技术、初值扰动技术、模式扰动技术和集合预报应用的进步,以及与当前国际主要数值预报中心集合预报水平的对比。针对集合预报系统逐步走向对流尺度、人工智能模型的趋势,从业务、科研、人工智能与集合预报、天气与气候一体化以及用户需求等方面分析了集合预报技术发展面临的主要挑战,并对未来发展做了展望。 展开更多
关键词 集合预报 方法 中国集合预报 回顾
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