Physics Communication最新文献

筛选
英文 中文
Analysis of Kendal Industrial Estate (KIK) impact on the Surrounding Air Quality 肯德尔工业区(KIK)对周边空气质量的影响分析
Physics Communication Pub Date : 2023-03-06 DOI: 10.15294/physcomm.v7i1.41309
Muhammad Ridwan Nur Cholis, Ian Yulianti, Fianti Fianti
{"title":"Analysis of Kendal Industrial Estate (KIK) impact on the Surrounding Air Quality","authors":"Muhammad Ridwan Nur Cholis, Ian Yulianti, Fianti Fianti","doi":"10.15294/physcomm.v7i1.41309","DOIUrl":"https://doi.org/10.15294/physcomm.v7i1.41309","url":null,"abstract":"The Kendal Industrial Area (KIK) is developed to accelerate economic development in the Kendal district area and to support the acceleration and expansion of economic development. Industrialization will lead to a process of air pollution which is marked by 16 companies that are already operating in the KIK area. This research was aimed to analyze the impact of the Kendal Industrial Estate on air quality. The approach of this research used descriptive method, with an analysis of changes in air quality that occurred before the existence of KIK and after the development of industrial areas. The factors that affect the air quality conditions reviewed in this study were air temperature, surface pressure, wind speed, and relative humidity. Data collection techniques used were secondary data NASA satellite imagery. The results showed that there is a change in air conditions after the presence of KIK as indicated by the increase in air pressure and air temperature and the decrease in relative humidity and wind speed. The results indicates that the existence of the Kendal Industrial Area (KIK) causes changes in environmental conditions, but these changes are not significant so they are still within the comfort limits for industrial areas.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79771213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the Need for Electronic Module IPAS Development to Improve Independence, Creativity and Critical Thinking 电子模块IPAS开发对提高独立性、创造性和批判性思维的需求分析
Physics Communication Pub Date : 2023-03-06 DOI: 10.15294/physcomm.v7i1.36685
Ika Vidiasari Aristawati, P. Marwoto, E. Ellianawati
{"title":"Analysis of the Need for Electronic Module IPAS Development to Improve Independence, Creativity and Critical Thinking","authors":"Ika Vidiasari Aristawati, P. Marwoto, E. Ellianawati","doi":"10.15294/physcomm.v7i1.36685","DOIUrl":"https://doi.org/10.15294/physcomm.v7i1.36685","url":null,"abstract":"According to the HDI, science education in Indonesia has a low number in producing students with independence, creativity, and critical thinking. In fulfilling and improving these criteria, the use of media learning based on Android, HTML, and offline-accessible applications has been enforced. The purpose of this research is to examine the need for developing learning media aiming to increase students' independence, creativity, and critical thinking. Descriptive narrative survey research is used as the method to employ the instrument indicators, including independence, creativity, and critical thinking. The instrument indicators consist of learning process, the need for electronic materials and supporting facilities and infrastructure. This study was conducted on 40 teachers, 3 male and 37 female, at SMK Pusat Keunggulan and 125 students, two females and 123 males, at SMKN 1 Trenggalek, two female and 123 male students. The survey on the students is also conducted to acknowledge and measure the indicators, including independence, creativity, and critical thinking. Data analysis is carried out through the validation of the instrument as the first step. After being revised, the implementation of the instrument was then conducted. Following the steps, the data were analyzed by applying Likert analysis. Based on the data obtained, 88% of the students and 100% of the teachers required innovative, intriguing, and accessible electronic-based materials to support and enhance both comprehensions of the lessons. Students who are categorized as less independent have 83.25% independency, 68.25%, and 83% critical thinking in average. As a result, learning media that are accessible offline, based on Android, HTML, and applications, are required.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"191 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84446617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of Neutron Flux in Brain Cancer Boron Neutron Capture Therapy Using Monte Carlo Simulation 用蒙特卡罗模拟测定脑癌硼中子俘获治疗中的中子通量
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.40277
F. Arianto, Liska Tri Handayani, W. Budi, P. Basuki
{"title":"Determination of Neutron Flux in Brain Cancer Boron Neutron Capture Therapy Using Monte Carlo Simulation","authors":"F. Arianto, Liska Tri Handayani, W. Budi, P. Basuki","doi":"10.15294/physcomm.v6i2.40277","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.40277","url":null,"abstract":"Boron Neutron Capture Therapy (BNCT) is a relatively safer technology for killing cancer cells, one of which is the Glioblastoma multiforme. One of the main components of the BNCT equipment is the collimator which functions as an exit point for epithermal neutron particles that hit cancer cells. In addition to the experimental method, BNCT research can be carried out by modeling, including using the MCNPX software based on the Monte Carlo Method. This research aimed to determine the flux distribution of fast and epithermal neutrons and the dose rate of fast neutrons and gamma that hit the target cancer cells in the phantom head of ORNL MIRD. Modeling using the MCNPX software has three main parts: cell cards, surface cards, and data cards. A tally is used on the data card to calculate the neutron flux. Based on the calculation of the modeling results, the flux of epithermal neutron is 2.87 x 109 n/cm2.s. The dose ratio of the epithermal to the fast neutron flux is 2.29 x 10-14 Gy.cm2/n. Then, the balance of the dose rate of the epithermal to the gamma is 1.64 x 10-14 Gy.cm2/n, and the ratio of epithermal to thermal neutron flux is 0.004. In this study, the epithermal neutron flux hitting the target cancer cells in cell target was moderated at 4 cm so that at a depth of 8 cm, the energy was converted into thermal neutrons. Based on the analysis of the results, it can be concluded that the neutron flux that will interact with cancer tissue is thermal neutrons, not epithermal neutron flux.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87648591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Teacher Roles and Student Problem Solving Skills in Learning Physics Online Collaborative Problem Solving 物理在线协作学习中教师角色与学生问题解决能力分析
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.38183
N. W. Lurinda, S. E. Nugroho, K. Khumaedi
{"title":"Analysis of Teacher Roles and Student Problem Solving Skills in Learning Physics Online Collaborative Problem Solving","authors":"N. W. Lurinda, S. E. Nugroho, K. Khumaedi","doi":"10.15294/physcomm.v6i2.38183","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.38183","url":null,"abstract":"The development of education needs to adapt to the needs of 21st century skills, including collaboration and problem solving. This study aims to analyze and describe the profile of Collaborative Problem Solving (CPS) online learning, as well as to describe the problem solving skills after learning. This research was conducted at SMA N 1 Gubug in class XI MIPA 1 for the academic year 2021/2022 with a qualitative descriptive method. CPS online learning is divided into virtual meetings using Microsoft Teams and discussions via text messages in WhatsApp. The research data was obtained through data observation’s, interviews, and written posttests. Data processing using a fixed comparison method with three stages, namely; data reduction, categorization, synthesis, and determination of hypotheses. The results showed that the role of the teacher appeared with almost the same frequency, namely as a motivator (37%), communicator (32%) and facilitator (31%). Students' problem-solving skills are dominated by the ability to plan and identify problems with the frequency of occurrence of 35% and 31%, respectively. The next two stages of problem solving, namely implementing the plan and checking back only appeared with a percentage of 19% and 15%. ","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80245686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Examination of the Wien’s Displacement Constant with Simulation and Simple Numerical Approaches 用模拟和简单数值方法检验维恩位移常数
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.39821
Riana Aprilia, Marisa Alifaturrohmah, Gilang Purnama, S. Wahyuni
{"title":"The Examination of the Wien’s Displacement Constant with Simulation and Simple Numerical Approaches","authors":"Riana Aprilia, Marisa Alifaturrohmah, Gilang Purnama, S. Wahyuni","doi":"10.15294/physcomm.v6i2.39821","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.39821","url":null,"abstract":"The purpose of this research  was to examine the value of the Wien’s constant using PhET Simulation virtual laboratory and simple numerical approach. The independent and dependent variable is blackbody temperature (T) and maximum wavelength (λ_max). In the use of a virtual laboratory, research is carried out by shifting the black body temperature feature so  the graph will display a spectral power density that varies to the wavelenght. Numerical approach was used in this research is Newton Raphson methods by Python program. Both of simulation and numerical approach yield the value of the maximum wavelength (λ_max) for a black body temperature variation. The black body temperatures and their appropriate maximum wavelength data then analyzed using linear regression. Final result show that value Wien’s constant using PhET is 2,93 × 10-3 mK with relative error obtained is 1,07 % while using Newton Raphson the Wien’s constant value obtained is 3,07 × 10-3 mK with relative error is 5,90 %. The two approachs carried out produce data that slightly different, but still in a very good accucracy range when compared with theory. So, PhET Simulation and Newton Raphson methods effective to examine the value of the Wien’s constant.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88906072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of a Weather Prediction System Based on Fuzzy Logic Using Mamdani and Sugeno Methods 基于模糊逻辑的Mamdani和Sugeno方法天气预报系统研究
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.39703
Noval Setyanugraha, Sofyan Al Aziz, Iis Widya Harmoko, Fianti Fianti
{"title":"Study of a Weather Prediction System Based on Fuzzy Logic Using Mamdani and Sugeno Methods","authors":"Noval Setyanugraha, Sofyan Al Aziz, Iis Widya Harmoko, Fianti Fianti","doi":"10.15294/physcomm.v6i2.39703","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.39703","url":null,"abstract":"Weather is a very important factor in supporting various human activities. However, weather is a natural event that keeps on changing due to various air conditions that affect it. One way to anticipate weather changes that may occur early is to create a system that can predict weather changes. Fuzzy logic is one of the methods that can be used in system prediction to find out the cause at a certain time and place. In this system, two fuzzy logic methods were used, they are the Mamdani and Sugeno methods, with three supporting criteria, including air temperature, humidity, and air pressure. In this research, data levers were carried out in June 2022 and resulted in a percentage accuracy of 73.34% for the Mamdani method and 70% for the Sugeno method.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75069709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Cognitive Ability Test Instrument Based on Revision Bloom Taxonomy on Dynamic Electricity Materials For Students of Senior High School 基于修订Bloom分类法的高中学生动态电材料认知能力测试工具的研制
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.37028
Eka Nurmaya, A. Rusilowati, B. Astuti
{"title":"Development of Cognitive Ability Test Instrument Based on Revision Bloom Taxonomy on Dynamic Electricity Materials For Students of Senior High School","authors":"Eka Nurmaya, A. Rusilowati, B. Astuti","doi":"10.15294/physcomm.v6i2.37028","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.37028","url":null,"abstract":"This study aims to develop a cognitive ability test instrument based on Bloom's taxonomy revision. The test instrument covers the cognitive domains C1 (remembering), C2 (understanding), C3 (applying), C4 (analyzing), C5 (evaluating), and C6 (creating). The research was carried out using research and development methods using a 4-D development model (Define, Design, Develop, Disseminate). The research data obtained is analyzed quantitatively to determine the validity, discriminatory power, reliability, and level of difficulty of the cognitive ability test instrument. Results of research based on the analysis of the validity test showed that the test instrument was declared valid by material experts and evaluation experts with an average value of 92.65. Based on the analysis of the validity of the item validity test, there are two invalid questions, namely questions number 2 and 10. Based on the results of analyzing differentiating power, the results of question number 20 are obtained, 64 for essay questions. Based on the analysis of the level of difficulty, the results showed that the test instrument was at 5% percent of the questions at the difficulty level, 20% at the sufficient level, 70% at the medium level, and 5% at the easy level. Overall, the test instrument is valid, reliable, has good discriminating power, and has varying levels of difficulty.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82844286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pancasila Student Profiles in Science Lessons and Potential for Strengthening by Developing PjBL-Based E-Modules Pancasila学生在科学课程中的概况和开发基于pjbl的e -模块的潜力
Physics Communication Pub Date : 2022-11-30 DOI: 10.15294/physcomm.v6i2.36755
Yayang Fatma Imania, P. Marwoto, E. Ellianawati
{"title":"Pancasila Student Profiles in Science Lessons and Potential for Strengthening by Developing PjBL-Based E-Modules","authors":"Yayang Fatma Imania, P. Marwoto, E. Ellianawati","doi":"10.15294/physcomm.v6i2.36755","DOIUrl":"https://doi.org/10.15294/physcomm.v6i2.36755","url":null,"abstract":"This study aims to find out class VII students’ profiles of Pancasila abilities of MTs SA Miftahul Huda Bumijawa. The dimensions of the meticulous Pancasila student profiles include four dimensions, namely critical reasoning, creativity, mutual cooperation, and independence. This type of research is a qualitative descriptive. Data collection instrument were observation and interview guidelines. Based on research data, the results showed that the ability of students to the Pancasila student profiles were still very low. 70% of students were in category of very low and another 30% were in category of low on the critical reasoning dimension. 57% of the students were in category of very low and another 43% were in category of low on the independent dimension. Overall students where in category of very low on the dimensions creative and mutual cooperation dimensions. It indicates that the applied learning media and learning models have not been able to strengthen Pancasila student profiles. The Integrated Science learning process still uses conventional methods and rarely does practicum or projects. The media used is still limited to textual. One of the potential solutions in order to strengthen the Pancasila student profiles are to develop an e-module based PjBL.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76184112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analyzing Physics Learning to Determine the Character and Self-Efficacy of High School Students 分析物理学习对高中生性格和自我效能感的影响
Physics Communication Pub Date : 2022-08-10 DOI: 10.15294/physcomm.v6i1.34463
S. Hadijah, S. Sarwi, M. Masturi
{"title":"Analyzing Physics Learning to Determine the Character and Self-Efficacy of High School Students","authors":"S. Hadijah, S. Sarwi, M. Masturi","doi":"10.15294/physcomm.v6i1.34463","DOIUrl":"https://doi.org/10.15294/physcomm.v6i1.34463","url":null,"abstract":"Research has been carried out to analyze learning based on the character and friendly attitude of students. The purpose of this study is how the character and self-interest of students in learning physics in a learning model. The research design used was quantitative research with survey research. The research sample was public high school and private high school in Semarang. The instrument used was a questionnaire using a google form. The results of this study were the lack of student character in learning, one of which was the student's curiosity in learning with a character proportion of 48%. Then, the proportion of students' self-confidence or self-confidence is still classified as low category. Students who lack confidence in their achievements and in doing assignments at school can affect learning models that are less precise and effective.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89377377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Soil Quality Analysis for Dryland Agriculture with Variation of Fertilization and Plant Rotation in Argomulyo District, Salatiga City Salatiga市argoomulyo区施肥和轮作变化下旱地农业土壤质量分析
Physics Communication Pub Date : 2022-08-10 DOI: 10.15294/physcomm.v6i1.33976
Eka Nurmaya, Fianti Fianti, I. Yulianti
{"title":"Soil Quality Analysis for Dryland Agriculture with Variation of Fertilization and Plant Rotation in Argomulyo District, Salatiga City","authors":"Eka Nurmaya, Fianti Fianti, I. Yulianti","doi":"10.15294/physcomm.v6i1.33976","DOIUrl":"https://doi.org/10.15294/physcomm.v6i1.33976","url":null,"abstract":"The study aim is to analyze soil quality for dryland agriculture with variations in fertilization and plant rotation in Argomulyo sub-district, Salatiga city. This study took samples on dryland agricultural land in Ledok Village by taking sample points using random sampling with a cluster sampling pattern by dividing them into 4 clusters. The Step of the research are field and laboratory observation to know the soil pH and moisture, also to determine the soil value and cation test, respectively. Next is the interview step to know the effect of fertilization and plant rotation variation. This research uses quantitative description analysis techniques. Based on the field observation was obtained the cluster 2 has pH value around 6.5 in the category slightly acidic. Then, for cluster 1,3, and has 4 neutral pH category in the range 6.6 – 7.5. The humidity of clusters in the dry category is in the range of 0 - 30%. Laboratory observation shows cluster 3 has a lower resistance around 8.1KW and has the best cation exchange capacity (CEC) test compared with other clusters. Based on the results of interviews, cluster 2 received organic fertilization and crop rotation occurred. Clusters 1 and 4 have not received any planting activity since October 2020. Meanwhile, fertilization in cluster 3 uses inorganic fertilizers. So Cluster 2 soil quality is better than the other three clusters due to organic fertilization and plans rotation so that the soil nutrients become stable. Cluster 1 has poor soil quality due to variations in inorganic fertilization, neglecting the soil, and being planted Manihot esculenta which impacted the reduction in the amount of nitrogen and phosphorus in the land.","PeriodicalId":31790,"journal":{"name":"Physics Communication","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87507870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信