Proceedings of the 3rd Green Development International Conference (GDIC 2020)最新文献

筛选
英文 中文
Chemical Properties of Ground Red Chili Based on Dihydrocapsaicin at Different Heating Process 基于二氢辣椒素的红辣椒粉在不同加热条件下的化学性质
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.069
D. Renate, Lavlinesia, Editha Renesteen, Indriyani, N. Sari
{"title":"Chemical Properties of Ground Red Chili Based on Dihydrocapsaicin at Different Heating Process","authors":"D. Renate, Lavlinesia, Editha Renesteen, Indriyani, N. Sari","doi":"10.2991/aer.k.210825.069","DOIUrl":"https://doi.org/10.2991/aer.k.210825.069","url":null,"abstract":"Heating process of ground red chili can affect chemical compound of dihydrocapsaicin that can caused less spicy. The objective of this research was to determine the effect of heating process of ground red chili based on the chemical compund of dihydrocapsaicin, and also moisture and vitamin C. Research was conducted on using a completely randomized design of ground red chili processed at different heating temperature of 70 ⁰ C, 75 ⁰ C, 80 ⁰ C, 85 ⁰ C and 90 ⁰ C for 10 minutes. Extraction of dihydrocapsaicin was done using ethanol as solvent, while high liquid chromatography (HPLC) was used for separation, identification and quantitation of the components. Vitamin C and moisture content of ground red chili was also determined; it could be affect the chemical compound of dihydrocapsaicin. Result showed that heating process at different temperatures affected the chemical properties of ground red chili based on dihydrocapsaicin , water and vitamin C content. The processing ground red chili processed at temperature of 90 ⁰ C resulted in the highest dihydrocapsaicin, water content and lower vitamin C of 62.91 µg/g, 73.01%, and 94.6 mg/100g respectively. Heating process of ground red chili processing affected chemical compound of dihydrocapsaicin, moisture and vitamin C.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130577791","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 Impact of Rubber Auction Market Towards Transmission Price for Farmers in Jambi Province 占碑省橡胶拍卖市场对农户输送价格的影响
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.028
M. Yanita, H. Ernawati, Z. Alamsyah
{"title":"The Impact of Rubber Auction Market Towards Transmission Price for Farmers in Jambi Province","authors":"M. Yanita, H. Ernawati, Z. Alamsyah","doi":"10.2991/aer.k.210825.028","DOIUrl":"https://doi.org/10.2991/aer.k.210825.028","url":null,"abstract":"Rubber is a small-scale plantation cultivated by smallholders. Jambi Province is one example that crucially depends on its agricultural sector, like rubber. Rubber does have the potential to be one key to economic and social development in the rural area, improving the socio-economic situation of millions of farmers in Jambi Province. However, the farmers do not have the bargaining power to determine the rubber slab's price to the traders. One distribution channel tries to help farmers get a higher price from the trader through the auction market. The objectives were analysing the rubber auction market's and impact on farmers' transmission price by using a descriptive method to describe the change in price received by the farmer in the auction market and counting the price transmission elasticity through simple regression farmer share. The result shows that farmers only got 40-60 percent from selling their rubber in the auction market. This condition explains the vulnerability of the farmer's position. One of the reasons is farmers who do not optimally role their marketing function. The rubber auction market is an alternative marketing distribution for farmers to get a more reasonable price with good rubber material quality, with a price transmission elasticity of 2.85. While price changes at the export level are transmitted very little to farmers, farmers' effect is shallow. In the future, farmers need to cooperate in one group of institutions to sell their rubber in considerable quantities to get bargaining power and a fair price.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"47 24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147844","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
Antioxidant Activity and Physico-Chemical of Dark Chocolate Made with Cocoa Butter Substitute (Cbs) from Virgin Coconut Oils 用初榨椰子油替代可可脂(Cbs)制作黑巧克力的抗氧化活性和理化性质
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.022
A. Nizori, Vonny Adinda, Arzita, Lavlinesia, R. Suseno
{"title":"Antioxidant Activity and Physico-Chemical of Dark Chocolate Made with Cocoa Butter Substitute (Cbs) from Virgin Coconut Oils","authors":"A. Nizori, Vonny Adinda, Arzita, Lavlinesia, R. Suseno","doi":"10.2991/aer.k.210825.022","DOIUrl":"https://doi.org/10.2991/aer.k.210825.022","url":null,"abstract":"This study aimed to investigate the effect of different concentration of virgin coconut oil to antioxidant activity, physical characteristics, and organoleptic of dark chocolate, and knows the best addition of virgin coconut oil on dark chocolate making. This study used a Completely Randomized Design (CRD) with 6 treatments and repeated 3 time, so that 18 experimental units were obtained. The data obtained were analyzed using the analysis of variance (ANOVA) at 5% and 1% levels. Parameter with significantly affect was further analyzed using Duncan's new multiple range test (DNMRT) at the 5% level. The results showed that different concentration of virgin coconut oil had significant effect (1%) on antioxidant activity. The best concentration of virgin coconut oil is 10% with antioxidant activity value 70,38% and, good melting quality","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133991388","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 Effectiveness of Argument-Driven Inquiry in Promoting Students’ Argumentation Skills About Colloids 论证驱动型探究在提高学生胶体论证能力中的作用
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.058
Dessy Amelia, Asrial, Muhammad Haris Effendi-hasibuan
{"title":"The Effectiveness of Argument-Driven Inquiry in Promoting Students’ Argumentation Skills About Colloids","authors":"Dessy Amelia, Asrial, Muhammad Haris Effendi-hasibuan","doi":"10.2991/aer.k.210825.058","DOIUrl":"https://doi.org/10.2991/aer.k.210825.058","url":null,"abstract":"This study aimed to investigate the effect of argument-driven inquiry (ADI) in promoting students' argumentation skills about colloidal concepts in comparison to inquiry-based learning (IbL) strategy. Factors that affected the students’ skills between the strategies were also identified. Three classes of 11 grade students (ADI-1, ADI-2, IbL) were involved. Data were collected using field-notes and argumentation tests and then analyzed using the interpretive method and the one-way ANOVA test. The results of the ANOVA test showed significant difference of skills amongst the classes (Fvalue=27.671, sig<.05). Tukey HSD test however showed that the mean scores of ADI-1 and ADI-2 were indifferent (mean=88.89 & 88.48, SD=4.73 & 4.40, sig>.05) but both were significantly different from the IbL (mean=80.98, SD=4.90, sig<.05). Therefore, ADI was more effective than the IbL strategy in promoting the students’ argumentation skills about the colloidal concepts. Different experiences the students had in the three classes were the factor that produced the skill differences between the students.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131642348","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: 2
Analysis of Vegetation Density and Land Surface Temperature Using Landsat Image in the Forest Area of KPHP Unit XII Batanghari 基于Landsat影像的巴当哈里KPHP 12单元林区植被密度和地表温度分析
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.020
Eva Achmad, R. Muryunika
{"title":"Analysis of Vegetation Density and Land Surface Temperature Using Landsat Image in the Forest Area of KPHP Unit XII Batanghari","authors":"Eva Achmad, R. Muryunika","doi":"10.2991/aer.k.210825.020","DOIUrl":"https://doi.org/10.2991/aer.k.210825.020","url":null,"abstract":"Climate change is caused by global warming due to human activities that contribute to greenhouse gas (GHG) emissions. Land-based human activities result in changes in dense vegetation, especially forest stands to land cover with low vegetation density (non-forest). Changes in land cover cause changes in surface temperature and humidity conditions. The forest area in KPHP Unit XII Batanghari has undergone significant changes in land cover over the last twenty years. This study aimed to analyse the spatial distribution of vegetation density (NDVI) and land surface temperature (LST) using remote sensing data and in this study, Landsat 8 satellite imagery was assessed. Landsat images have two thermal bands and they can be analysed to obtain information about the existing land surface temperature at the time when the earth being scanned. The results showed that the vegetation density index or NDVI ranged from 0.132 to 0.866. The higher the NDVI value, the higher the vegetation density. The value of LST in KPHP Unit XII Batanghari varied, with a range of LST with a low temperature value of 18-25°C, where low temperatures have land cover classes in the form of secondary forest and other vegetated areas such as plantations and agriculture. Meanwhile, high temperature values are areas with open or non-vegetated land cover classes with a temperature range of 28-52 ° C.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134016400","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
User’s Perspective on the Quality of Notary Master Graduates in the Concept of Work 工作理念下公证硕士毕业生素质的用户视角
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.084
Y. Yetniwati, E. Rahmi, D. Amir
{"title":"User’s Perspective on the Quality of Notary Master Graduates in the Concept of Work","authors":"Y. Yetniwati, E. Rahmi, D. Amir","doi":"10.2991/aer.k.210825.084","DOIUrl":"https://doi.org/10.2991/aer.k.210825.084","url":null,"abstract":"","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124895712","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
Correlation Among Morphological Characters of Local Sweet Potato (Ipomea batatas L.) Accessions in Kerinci Regency 地方甘薯(Ipomea batatas L.)形态性状的相关性克里西摄政时期的入会
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.019
S. Nusifera, Y. Alia, Agus Kurniawan Mastur
{"title":"Correlation Among Morphological Characters of Local Sweet Potato (Ipomea batatas L.) Accessions in Kerinci Regency","authors":"S. Nusifera, Y. Alia, Agus Kurniawan Mastur","doi":"10.2991/aer.k.210825.019","DOIUrl":"https://doi.org/10.2991/aer.k.210825.019","url":null,"abstract":"Sweet potato is one of starchy tuber crop with high potential as a source carbohydrate for both food and feed. Developing this crop through breeding program requires clear understandings on correlative relationships among plant characters especially when indirect selection scheme is used. This research was aimed to know the correlation among morphological characters on sweet potato accessions originated from Kerinci Regency. The research was initiated by exploration and accession collection in several district regions where sweet potato crops were found. Such collected accession was planted in a randomized block design using one row plot with two replications. Characters observed were several morphological characters referring to plant descriptor issued by Center for Plant Variety Protection. Data were analyzed using descriptive statistics (diversity index) and a non-parametric correlation analysis (Spearman-rho). Results showed that several morphological characters were intercorrelated each other both positively and negatively. This meant such characters could be used as a secondary trait in selecting potential genotypes for specific purposes through indirect selection scheme of breeding.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124105757","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
Individual Characteristic and the Causes of Death in Lecturers at Jambi, Indonesia 印度尼西亚Jambi讲师的个体特征和死亡原因
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.075
U. Kalsum, H. S. Nasution, I. N. Ibnu
{"title":"Individual Characteristic and the Causes of Death in Lecturers at Jambi, Indonesia","authors":"U. Kalsum, H. S. Nasution, I. N. Ibnu","doi":"10.2991/aer.k.210825.075","DOIUrl":"https://doi.org/10.2991/aer.k.210825.075","url":null,"abstract":"Work as a lecturer is highly risk because of the workload, stress and unhealthy eating patterns or lifestyles as well as levels of welfare that are not proportional to performance demands. Recently, there has been an increasing number of premature deaths due to non-communicable or degenerative diseases. The research objective was to determine the characteristics and causes of death among lecturers in Jambi (case study at Jambi University). The research design was cross sectional. Data collection by interview and documentation in the staffing section and the family of lecturers who died. Data collection time for 2 months (July-August 2020). The number of lecturers who died during 2015-2020 was 25 people (2.5%). The average number of lecturers who died was 5 people/year. Characteristics of Lecturers who died were mostly male (76%), with an average age of 59.8 years (minimum 37 and maximum 68 years). The average working period is 30.64 years (minimum 13 and maximum 39 years). Lecturers pass away at the elderly (68%), associate Professor position (56%), work period of more than 30 years (64%), postgraduate education (64%), Bachelor of Law study program (20%), Faculty of Teacher Training and Science Education (40%), occurred most in 2018 (28%). The cause of death was non-communicable diseases (96%), especially Diabetes Mellitus (28%), Heart Attack, Hypertension, Liver Cancer and Auto Immune diseases. Non-communicable diseases as the main cause of death among lecturers, it is more often in women, doctoral education level, a functional position as a Professor, a work period of more than 30 years and from the Faculty of Social Humanities Literacy. It is necessary to prevent non-communicable diseases by implementing “CERDIK” behavior (regular health checks, no smoking, being active in physical activity/sports, a balanced diet, adequate rest and good stress management).","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116127673","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: 3
Studies on the Commercialization of Research Outcomes with a License at Jambi University 占碑大学许可研究成果商业化研究
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.051
Dwi Suryahartati, Windarto
{"title":"Studies on the Commercialization of Research Outcomes with a License at Jambi University","authors":"Dwi Suryahartati, Windarto","doi":"10.2991/aer.k.210825.051","DOIUrl":"https://doi.org/10.2991/aer.k.210825.051","url":null,"abstract":"Higher education institutions are one of the centers of research activities throughout the world. The amount of research and research results that can be commercialized is not comparable. The policies for the independent campus and the independent learning have an influence on the research amount. Research outcomes must reach the community and technology transfer and are carried out through legal mechanisms. One of them is with a license. This paper describes the commercialization of research outcomes at Jambi university. The purpose of this paper is to look at the legal aspects of the commercialization of research outcomes and how the license accommodates the commercialization of them at Jambi university. The main obstacle was lack of understanding on: the commercialization process, the ability to see the potential for commercialization, and the legal aspects related to commercialization. Literature study and interview method were carried out for this research. The data gathered were quantitative and qualitative ones.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"321 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130638574","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
Digital Cashless Payment Readiness Model on MSMEs Using Technological-Organization-Environtment (TOE) Framework: Study on MSME Users Gopay and Ovocash) 基于技术-组织-环境(TOE)框架的中小微企业数字无现金支付准备度模型——基于中小微企业用户(Gopay和Ovocash)的研究
Proceedings of the 3rd Green Development International Conference (GDIC 2020) Pub Date : 2021-08-26 DOI: 10.2991/aer.k.210825.043
Novita Ekasari, Rosmeli Rosmeli, Rista Aldilla Syafri
{"title":"Digital Cashless Payment Readiness Model on MSMEs Using Technological-Organization-Environtment (TOE) Framework: Study on MSME Users Gopay and Ovocash)","authors":"Novita Ekasari, Rosmeli Rosmeli, Rista Aldilla Syafri","doi":"10.2991/aer.k.210825.043","DOIUrl":"https://doi.org/10.2991/aer.k.210825.043","url":null,"abstract":"The success of a good business is determined by a strategy that is able to compete with its competitors, one of which is by using a non-cash payment system (digital) so as to provide convenience for consumers to make payments anywhere and anytime there both for online and offline sales. Non-cash payment methods have begun to be applied by businesses by starting to cooperate with the largest digital platforms in Indonesia, namely Go Pay and OVO cash. The purpose of this study is to see the readiness of micro, small and medium enterprises in using digital payment methods with a TOE (technology-organization-environment) approach and then see if they are ready to use digital payment seen from these 3 sides, this study represents samples from 5 cities in Sumatra Island namely Aceh, Medan, Jambi, Pekanbaru and Lampung.The study used a sample of respondents, who have collaborated with GoPay and OVOCash applications totaling 175 MSMEs. This research uses PLS and Path Analysis techniques with the SPSS test tool. The results showed that MSMEs in sumatra region can absorb the use of digital payments seen in terms of Technology with a percentage absorption of 75.8%, Organization by 41.2% and Environment by 58.2%. The conclusion of this study is that there is a readiness of businesses from 5 major cities in Sumatra to use digital payments Gopay and OVO cash that makes their business easier.","PeriodicalId":131374,"journal":{"name":"Proceedings of the 3rd Green Development International Conference (GDIC 2020)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131110451","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