期刊文献+
共找到14,687篇文章
< 1 2 250 >
每页显示 20 50 100
Advances in Research of Characteristics, Environmental Impact and Treatment Methods of Dairy Wastewater
1
作者 Jiping XIE Ming QIAO +1 位作者 Ying BAI Li SONG 《Asian Agricultural Research》 2025年第3期18-21,39,共5页
Dairy wastewater,a kind of high concentration organic wastewater,is produced in large quantities and difficult to treat,and has a negative impact on the ecological environment.In this study,the source,composition,wate... Dairy wastewater,a kind of high concentration organic wastewater,is produced in large quantities and difficult to treat,and has a negative impact on the ecological environment.In this study,the source,composition,water quality characteristics of dairy wastewater and its impact on the ecological environment were analyzed,and the treatment methods of dairy wastewater at home and abroad in recent years were summarized,in order to provide a reference for the treatment of dairy wastewater. 展开更多
关键词 Dairy products WASTEWATER Treatment methods Advances in research
在线阅读 下载PDF
A review of research methods for elucidating the microstructure of pharmaceutical preparations
2
作者 Peng Yan Zhiyuan Hou Jinsong Ding 《Journal of Pharmaceutical Analysis》 2025年第5期901-915,共15页
The microstructures of pharmaceutical preparations play a pivotal role in determining their critical quality attributes(CQAs),such as drug release,content uniformity,and stability,which greatly impact the safety and e... The microstructures of pharmaceutical preparations play a pivotal role in determining their critical quality attributes(CQAs),such as drug release,content uniformity,and stability,which greatly impact the safety and efficacy of drugs.Unlike the inherent molecular structures of active pharmaceutical ingredients(APIs)and excipients,the microstructures of pharmaceutical preparations are developed during the formulation process,presenting unique analytical challenges.In this review,we primarily focus on presenting the research methods used to elucidate the microstructures of pharmaceutical preparations,including X-ray imaging(XRI),scanning electron microscopy(SEM),atomic force microscopy(AFM),Raman spectroscopy,infrared(IR)spectroscopy,and rheometer technology.Subsequently,we highlight the applications,advantages,and limitations of these methods.Finally,we discuss the current challenges and future perspectives in this field.This review aims to provide a comprehensive reference for understanding the microstructures of pharmaceutical preparations,offering new insights and potential advancements in their development. 展开更多
关键词 MICROSTRUCTURE Pharmaceutical preparation Critical quality attributes research methods
在线阅读 下载PDF
Erratum to:Research Methods Used for Developing Academic Wordlists:A Systematic Review of Studies Published Between 2000 and 2020
3
作者 Mostafa Saeedi Reza Khany Khalil Tazik 《Chinese Journal of Applied Linguistics》 2025年第4期637-637,共1页
Erratum to:Research Methods Used for Developing Academic Wordlists:A Systematic Review of Studies Published Between 2000 and 2020,Chinese Journal of Applied Linguistics,Volume 48,Issue 3,2025,pp.425-450,doi:10.1515/CJ... Erratum to:Research Methods Used for Developing Academic Wordlists:A Systematic Review of Studies Published Between 2000 and 2020,Chinese Journal of Applied Linguistics,Volume 48,Issue 3,2025,pp.425-450,doi:10.1515/CJAL-2025-0210. 展开更多
关键词 research methods academic wordlists systematic review applied linguisticsvolume
在线阅读 下载PDF
Research Methods Used for Developing Academic Wordlists: A Systematic Review of Studies Published Between 2000 and 2020
4
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
在线阅读 下载PDF
Research Progress and Identification Method of Apple Stress Resistance
5
作者 王贵平 王金政 +2 位作者 薛晓敏 路超 聂佩显 《Agricultural Science & Technology》 CAS 2013年第10期1413-1416,共4页
In the research, changes of apple chemistry, and molecule, under stresses, are n terms of morphology, physiology, bio- illustrated and research and identifica- tion methods of apple resistance are explored involving ... In the research, changes of apple chemistry, and molecule, under stresses, are n terms of morphology, physiology, bio- illustrated and research and identifica- tion methods of apple resistance are explored involving drought-resistance, flood-re- sistance, salt-stress resistance, cold-hardiness and heat-resistance. In addition prospects of apple resistance research are proposed, as well. 展开更多
关键词 APPLE Adverse stress Stress resistance research progress Identifica- tion method
在线阅读 下载PDF
Research Progress in Occupational Health Risk Assessment Methods in China 被引量:26
6
作者 ZHOU Li Fang TIAN Fang +3 位作者 ZOU Hua YUAN Wei Ming HAO Mo ZHANG Mei Bian 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2017年第8期616-622,共7页
Traditional occupational disease control and prevention has remained prevalent in China over recent decades. There are appropriately 30,000 new case reports of occupational diseases annually. Although China has alread... Traditional occupational disease control and prevention has remained prevalent in China over recent decades. There are appropriately 30,000 new case reports of occupational diseases annually. Although China has already established a series of occupational disease prevention programs, occupational health risk assessment (OHRA) strategies continue to be a limitation. 展开更多
关键词 HR research Progress in Occupational Health Risk Assessment methods in China
暂未订购
Modern research thoughts and methods on bio-active components of TCM formulae 被引量:5
7
作者 TANG Yu-Ping XU Ding-Qiao +3 位作者 YUE Shi-Jun CHEN Yan-Yan FU Rui-Jia BAI Xue 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2022年第7期481-493,共13页
TCM formulae are the important guidances for clinical application of traditional Chinese medicines,which follow the principles of diagnosis and treatment in TCM.Elucidating the bio-active components of TCM formulae is... TCM formulae are the important guidances for clinical application of traditional Chinese medicines,which follow the principles of diagnosis and treatment in TCM.Elucidating the bio-active components of TCM formulae is the key to the modernization and internationalization of traditional Chinese medicines.With the rapid development of modern instruments and technology,many new theories,methods and strategies are emerging,which upgrade the research of TCM formulae into a higher level.Only when the medicinal efficacy,bio-active components,function mechanism of TCM formulae are understood,we can guarantee TCM safety and quality control.In this paper,we summarized the latest modern research thoughts and methods on bio-active components of TCM formulae including formula decomposition study,serum pharmacology and serum pharmacochemistry,association analysis,biochro-matography,network pharmacology,metabolomics and proteomics,so as to provide reference for the research and development of TCM in the future. 展开更多
关键词 Chinese medicine TCM formulae Bio-active component Morden research methods
原文传递
Effective point kinetic parameters calculation in Tehran research reactor using deterministic and probabilistic methods 被引量:1
8
作者 M.Kheradmand Saadi A.Abbaspour 《Nuclear Science and Techniques》 SCIE CAS CSCD 2017年第12期182-192,共11页
The exact calculation of point kinetic parameters is very important in nuclear reactor safety assessment, and most sophisticated safety codes such as RELAP5, PARCS,DYN3D, and PARET are using these parameters in their ... The exact calculation of point kinetic parameters is very important in nuclear reactor safety assessment, and most sophisticated safety codes such as RELAP5, PARCS,DYN3D, and PARET are using these parameters in their dynamic models. These parameters include effective delayed neutron fractions as well as mean generation time.These parameters are adjoint-weighted, and adjoint flux is employed as a weighting function in their evaluation.Adjoint flux calculation is an easy task for most of deterministic codes, but its evaluation is cumbersome for Monte Carlo codes. However, in recent years, some sophisticated techniques have been proposed for Monte Carlo-based point kinetic parameters calculation without any need of adjoint flux. The most straightforward scheme is known as the ‘‘prompt method'' and has been used widely in literature. The main objective of this article is dedicated to point kinetic parameters calculation in Tehran research reactor(TRR) using deterministic as well as probabilistic techniques. WIMS-D5B and CITATION codes have been used in deterministic calculation of forward and adjoint fluxes in the TRR core. On the other hand, the MCNP Monte Carlo code has been employed in the ‘‘prompt method''scheme for effective delayed neutron fraction evaluation.Deterministic results have been cross-checked with probabilistic ones and validated with SAR and experimental data. In comparison with experimental results, the relativedifferences of deterministic as well as probabilistic methods are 7.6 and 3.2%, respectively. These quantities are10.7 and 6.4%, respectively, in comparison with SAR report. 展开更多
关键词 POINT kinetic parameters TEHRAN research reactor ADJOINT flux Prompt method DETERMINISTIC method Probabilistic method
在线阅读 下载PDF
Plant Root Research Methods and Trends 被引量:2
9
作者 张博文 《Agricultural Science & Technology》 CAS 2017年第12期2295-2298,2302,共5页
The root system is an important organ that plants absorb nutrients from the soil, and can synthesize the vital substances necessary for the plant. However, the study on root system is burdened with great challenges du... The root system is an important organ that plants absorb nutrients from the soil, and can synthesize the vital substances necessary for the plant. However, the study on root system is burdened with great challenges due to its underground roots. In order to further explore the research methods and techniques of plant roots, the research mainly reviewed the research methods of root system, and summarized the methods of conventional root research, such as digging method, core drilling method, container method and isotope method. The progress of CT scan method, ground penetrating radar, special environmental culture method, nucle- ar magnetic resonance method and CCD three-dimensional imaging method were reviewed. Prospects for plant root research were made according to the trends of root research methods usincl hiqh-end technolo.qy at home and abroad. 展开更多
关键词 Root system research methods In situ observation 3u reconstruction research trends
在线阅读 下载PDF
Delphi methodology in healthcare research:How to decide its appropriateness 被引量:59
10
作者 Prashant Nasa Ravi Jain Deven Juneja 《World Journal of Methodology》 2021年第4期116-129,共14页
The Delphi technique is a systematic process of forecasting using the collective opinion of panel members.The structured method of developing consensus among panel members using Delphi methodology has gained acceptanc... The Delphi technique is a systematic process of forecasting using the collective opinion of panel members.The structured method of developing consensus among panel members using Delphi methodology has gained acceptance in diverse fields of medicine.The Delphi methods assumed a pivotal role in the last few decades to develop best practice guidance using collective intelligence where research is limited,ethically/logistically difficult or evidence is conflicting.However,the attempts to assess the quality standard of Delphi studies have reported significant variance,and details of the process followed are usually unclear.We recommend systematic quality tools for evaluation of Delphi methodology;identification of problem area of research,selection of panel,anonymity of panelists,controlled feedback,iterative Delphi rounds,consensus criteria,analysis of consensus,closing criteria,and stability of the results.Based on these nine qualitative evaluation points,we assessed the quality of Delphi studies in the medical field related to coronavirus disease 2019.There was inconsistency in reporting vital elements of Delphi methods such as identification of panel members,defining consensus,closing criteria for rounds,and presenting the results.We propose our evaluation points for researchers,medical journal editorial boards,and reviewers to evaluate the quality of the Delphi methods in healthcare research. 展开更多
关键词 Delphi studies Quality tools for methodology research methods Delphi technique CONSENSUS Expert panel Coronavirus disease 2019 SARS-CoV-2
在线阅读 下载PDF
Interview-One of the Key Methods in Social Research
11
作者 何亚平 方伟 邱银香 《海外英语》 2011年第8X期387-389,共3页
Interviewing is one of the most common and most powerful research methods in sociology. To provide an overview of interviewing in social research, the preliminaries and some tactics applied in interviewing are illustr... Interviewing is one of the most common and most powerful research methods in sociology. To provide an overview of interviewing in social research, the preliminaries and some tactics applied in interviewing are illustrated firstly. Secondly, various forms of interviewing employed in social research are analyzed specifically. Finally, the issues of interviewing are critically examined. 展开更多
关键词 INTERVIEW research method TACTICS FORMS ISSUES
在线阅读 下载PDF
Mixed methods research in complementary and alternative medicine:a scoping review 被引量:1
12
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
原文传递
On Analysis of English Language Education in China from the Research Questions and Research Methods
13
作者 王珊珊 赵秦岭 雷慧娟 《海外英语》 2011年第8X期155-156,共2页
The present paper first reviewed the major concepts and practices involves in research. A small study was conducted to survey on the prevailing research questions and methods in ELT studies in China, showing a major p... The present paper first reviewed the major concepts and practices involves in research. A small study was conducted to survey on the prevailing research questions and methods in ELT studies in China, showing a major paradigm shift from qualitative studies to quantitative research and mixed methods, with little critical research identified. 展开更多
关键词 research methodS ELT STUDIES
在线阅读 下载PDF
Quantitative comparison of cranial approaches in the anatomy laboratory: A neuronavigation based research method 被引量:1
14
作者 Francesco Doglietto Jimmy Qiu +7 位作者 Mayoorendra Ravichandiran Ivan Radovanovic Francesco Belotti Anne Agur Gelareh Zadeh Marco Maria Fontanella Walter Kucharczyk Fred Gentili 《World Journal of Methodology》 2017年第4期139-147,共9页
AIMTo describe the development and validation of a novel neuronavigation-based method, which allows the quan-tification of the anatomical features that define anapproach, as well as real-time visualization of the surg... AIMTo describe the development and validation of a novel neuronavigation-based method, which allows the quan-tification of the anatomical features that define anapproach, as well as real-time visualization of the surgicapyramid. METHODSThe method was initially developed with commercially-available hardware for coordinate collection (a digitizerand a frameless navigation system) and software forvolume rendering; dedicated neuronavigation software (ApproachViewer, part of GTx-UHN) was then developed. The accuracy of measurements and the possibility of volumetric rendering of surgical approaches simulated in a phantom were compared among three different methods and commercially-available radiological software. In the anatomy laboratory, ApproachViewer was applied to the comparative quantitative analysis of multiple neurosurgical approaches and was used by many surgeons who were untrained for the research method.RESULTSThe accuracy of ApproachViewer is comparable to com-mercially-available radiological software. In the anatomy laboratory, the method appears versatile. The system can be easily used after brief training. ApproachViewer allows for real-time evaluation and comparison of surgical approaches, as well as post-dissection analyses of collected data. The accuracy of the method depends on the navigation registration: with a 1-2 mm registration error, it is adequate for evaluation and comparison of most neurosurgical approaches.CONCLUSIONThis new research method and software allows semi-automated visualization, quantifcation, and comparison of neurosurgical approaches in the anatomy laboratory. 展开更多
关键词 Anatomical study COMPARISON Neurosurgical approach Quantifcation research method 3D rendering
在线阅读 下载PDF
A Review of Research Directions and Research Methods of Farmland Weeds 被引量:4
15
作者 Shujuan Li Guoqin Huang 《NASS Journal of Agricultural Sciences》 2021年第2期58-62,共5页
Farmland weeds are an important part of farmland ecosystems.Research on farmland weeds is one of the major research fields in agricultural ecology.It is of great significance for achieving high yield,high quality and ... Farmland weeds are an important part of farmland ecosystems.Research on farmland weeds is one of the major research fields in agricultural ecology.It is of great significance for achieving high yield,high quality and high efficiency in agriculture.In recent years,research on farmland weeds has focused on investigation of weed communities,research on weed seed banks,and research on weed control.These three research directions complement each other.Among them,the investigation work of weed communities and the research of weed seed banks are helpful for us to grasp the occurrence of farmland weeds more accurately and provide references for the control of farmland weeds.This article summarizes the research directions of farmland weeds in recent years(weed community investigation,weed seed bank,weed control)and the research methods used,provide reference value for the follow-up research work of farmland weeds,and provide theoretical support for promoting the development of rural ecological industry and building beautiful villages. 展开更多
关键词 WEEDS AGRICULTURE research directions research methods
在线阅读 下载PDF
Qualitative Research Methods in Spatial Urban Development: A Methodological Investigation of Approaches into Urban Development Based on Centralities in the Context of a Medium-Sized European City 被引量:1
16
作者 Martin Brabant 《Journal of Civil Engineering and Architecture》 2016年第11期1288-1296,共9页
Dispersed and peripheral spaces in the urban core are influenced both by the trend towards constant growth as well as social ways of life which are constantly evolving. Following a connotation, these two factors there... Dispersed and peripheral spaces in the urban core are influenced both by the trend towards constant growth as well as social ways of life which are constantly evolving. Following a connotation, these two factors therefore play a crucial role in defining the alternation of urban space--in particular, that of the centers. The main focus of this research article is on the methodology used in the survey and evaluation of "centralities" as well as their developments over the past four decades (1974-2014) in approaches to urban development that has been developed in Graz.~ The analysis has drawn on the four editions ("evolution") of approaches to urban development as conceived by the city of Graz in order to examine their verbal characteristics in regard to centralities. At the same time, the analysis does not examine presentations of plans which exist in supplementary forms (e.g., explanatory reports and supplemented plans)--it restricts itself solely to the various plans set out in the STEKs.2 The highest degree of accuracy has been applied to the notion of "centralis" in approaches to urban development. The goal of the research project was to depict the modulation of the notion of "centrality" in the urban context as a space-forming dimension. Furthermore, it clearly shows the extent to which the notion of the "centre" (in the widest sense of the word) has become distanced from qualitative, spatial development and at the current time of urban development is experiencing a sort of Renaissance. In the field of "urban development", architectural references in the context of"centrality" have scarcely been researched. This has led to the opening-up of a complex interdisciplinary research field. In order to make the complex architectural determinants of "centrality" more accessible to the participating disciplines, approaches to urban development have been explored in the form of a social and spatial analysis. 展开更多
关键词 Social space analysis qualitative research methods in urban development processes classification of city sizes URBAN centre.
在线阅读 下载PDF
Research on dynamic measurement method of speckle in laser display 被引量:1
17
作者 LIU Hong LIU Yaning ZHANG Xiaoyu 《Optoelectronics Letters》 EI 2024年第6期360-366,共7页
Laser display technology is the most promising display technology in the market and is widely used in many fields. However, laser speckle has been troubling the application and expansion of this technology in some fie... Laser display technology is the most promising display technology in the market and is widely used in many fields. However, laser speckle has been troubling the application and expansion of this technology in some fields. In order to better evaluate the speckle, speckle measurement methods must be studied. In this study, a dynamic measurement method for laser speckles is proposed according to the optical superposition characteristics of speckle, which can reduce the influence of non-coherent factors on the speckle measurement results. The feasibility of the dynamic speckle measurement method is verified by designing an experimental scheme. 展开更多
关键词 research on dynamic measurement method of speckle in laser display
原文传递
Telephone Interview-One of the Key Research Methods in Education
18
作者 何亚平 《海外英语》 2011年第9X期183-185,共3页
Telephone interviewing is a crucial but not well-documented qualitative research method in sociology.Such aspects as how to conduct a telephone interview and by whom such a method is best used,are illustrated specific... Telephone interviewing is a crucial but not well-documented qualitative research method in sociology.Such aspects as how to conduct a telephone interview and by whom such a method is best used,are illustrated specifically.More importantly,the advantages and disadvantages of telephone interviews are critically exploited.As a relatively cheap,flexible and reliable means of gathering data,telephone interview deserves more attention.Moreover,due to such obstacles as sampling,establishing rapport and recognizing the limitations of data generated,it is best to use telephone interviewing for educational research in conjunction with other data collection methods. 展开更多
关键词 TELEPHONE INTERVIEW qualitative research method advantages disadvantages data COLLECTION
在线阅读 下载PDF
The theory and method research on the double evaluation of land and space:A survey 被引量:1
19
作者 WANG You-xiao LU Ru-cheng 《Ecological Economy》 2020年第4期307-316,共10页
By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layo... By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layout and optimization of land and space development pattern.From the aspects of resource carrying capacity,environmental carrying capacity,the importance of ecological protection,the suitability of agricultural production,and the suitability of urban construction,we sort out domestic and foreign documents.The evaluation of resource carrying capacity has changed from single-factor evaluation to multi-factor comprehensive evaluation.At present,the optimization of land use pattern based on the“three-generation”space is still under exploration,it is not enough to systematize and summarize the thought of optimizing the spatial pattern of the national territory.The theoretical framework,model,method and index of“dual evaluation”of territorial space need to be improved continuously,it also needs the scientific analysis and cognition from the natural direction to the human location direction and the spatial equilibrium state as the new driving force. 展开更多
关键词 resource and environmental carrying capacity suitability of land and space development EVALUATION theory and method research progress
原文传递
上一页 1 2 250 下一页 到第
使用帮助 返回顶部