National Academy Science Letters最新文献

筛选
英文 中文
Generalized Regressed Exponential Estimator for Estimation of Mean Under Neutrosophic Ranked Set Sampling 用于估计中性排序集采样下平均值的广义回归指数估计器
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-07-09 DOI: 10.1007/s40009-024-01412-5
Bharti Khanna
{"title":"Generalized Regressed Exponential Estimator for Estimation of Mean Under Neutrosophic Ranked Set Sampling","authors":"Bharti Khanna","doi":"10.1007/s40009-024-01412-5","DOIUrl":"10.1007/s40009-024-01412-5","url":null,"abstract":"<div><p>This manuscript uses neutrosophic ranked set sampling to handle the data involving uncertainty and proposed generalized regressed exponential estimator for estimating the mean under neutrosophic ranked set sampling. The fundamental properties like bias and mean square error of the proposed estimator are calculated up to the first order of approximation. The conditions under which the proposed estimator is better than the promising existing estimators have been derived. Mathematical study has been carried out to support the theoretical results and proved the efficiency of the proposed estimator over the promising existing estimators.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"719 - 725"},"PeriodicalIF":1.2,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A New Approach to Evaluate Pressure of Solids at High Compression 评估高压缩固体压力的新方法
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-06-20 DOI: 10.1007/s40009-024-01409-0
Abhay P. Srivastava, Brijesh K. Pandey, Abhishek Kumar Gupta, Anjani Kumar Pandey
{"title":"A New Approach to Evaluate Pressure of Solids at High Compression","authors":"Abhay P. Srivastava,&nbsp;Brijesh K. Pandey,&nbsp;Abhishek Kumar Gupta,&nbsp;Anjani Kumar Pandey","doi":"10.1007/s40009-024-01409-0","DOIUrl":"10.1007/s40009-024-01409-0","url":null,"abstract":"<div><p>The new isothermal equation of state (NEOS) for solids is derived through the theory of lattice potential, utilizing the concept of volume dependence of the short-range force constant. To obtain this equation of state, we employed the concept of the third-order approximation of the lattice potential. For critical analysis, we compared the results of isothermal equations of state (EOSs), such as Vinet EOS, Murnaghan EOS, Holzapfel EOS, Born-Mie EOS, Birch–Murnaghan EOS, and NEOS. The newly derived equation of state (NEOS) has been utilized to analyze the compression behavior of molybdenum (Mo), Potassium (K), and Xenon (Xe). It was found that NEOS is in good agreement with experimental data for given solids Mo, K, and Xe up to high compression, while Vinet EOS, Murnaghan EOS, Born-Mie EOS, Holzapfel EOS, and Birch–Murnaghan EOS are less sensitive in calculating pressure at high compression in most cases. Thus, NEOS remains consistent and in good agreement with experimental results for all the samples of solids taken, even up to high compression.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"713 - 718"},"PeriodicalIF":1.2,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trend Analysis of Area, Production and Productivity of Nutri-Cereals (Pearl Millet and Sorghum) in Maharashtra, India: Navigating Challenges for Food Security and the Way Out 印度马哈拉施特拉邦营养谷物(珍珠米和高粱)的面积、产量和生产率趋势分析:应对粮食安全挑战与出路
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-06-18 DOI: 10.1007/s40009-024-01417-0
Nobin Chandra Paul, Dhananjay D. Nangare
{"title":"Trend Analysis of Area, Production and Productivity of Nutri-Cereals (Pearl Millet and Sorghum) in Maharashtra, India: Navigating Challenges for Food Security and the Way Out","authors":"Nobin Chandra Paul,&nbsp;Dhananjay D. Nangare","doi":"10.1007/s40009-024-01417-0","DOIUrl":"10.1007/s40009-024-01417-0","url":null,"abstract":"<div><p>Millets are renowned for their resilience to climate, as they can endure challenging environmental conditions. Maharashtra, known for its agriculture-based economy, faces the challenge of 24% of its land being prone to drought. Despite this, the state has enormous agricultural growth potential and is a major millet producer in India. Being a climate-resilient crop, there is a huge scope for area expansion under millet cultivation in the state. The present article investigates the current trend in area, production and productivity of pearl millet (<i>Pennisetum glaucum</i> L.) and sorghum (<i>Sorghum bicolor</i>) in Maharashtra by using the Exponential Compound Annual Growth Rate (Exponential CAGR) approach. The present study reveals that the area and production of both millets in Maharashtra state are on a decreasing trend. Both millets production experienced negative growth rates, with a CAGR of −3.89% for sorghum and −2.56% for pearl millet. The present study has the potential to determine the current state of production and productivity of both millets in the state, which will help policymakers and researchers develop strategies to boost millet production in Maharashtra in the coming years.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"613 - 616"},"PeriodicalIF":1.2,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variation in the Essential Oil Composition in Leaves (Fresh & Dried) of Cinnamomum tamala (Indian Bay Leaf) Cultivated in Western Himalaya 西喜玛拉雅地区种植的印度贝叶(Cinnamomum tamala)叶片(新鲜和干燥)中精油成分的变化
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-06-18 DOI: 10.1007/s40009-024-01416-1
Dharam Chand Attri, Amit Bahukhandi, Vijaylaxmi Trivedi, Rajindra Singh Chauhan, Mohan Chandra Nautiyal, Bhagwati Prasad Nautiyal
{"title":"Variation in the Essential Oil Composition in Leaves (Fresh & Dried) of Cinnamomum tamala (Indian Bay Leaf) Cultivated in Western Himalaya","authors":"Dharam Chand Attri,&nbsp;Amit Bahukhandi,&nbsp;Vijaylaxmi Trivedi,&nbsp;Rajindra Singh Chauhan,&nbsp;Mohan Chandra Nautiyal,&nbsp;Bhagwati Prasad Nautiyal","doi":"10.1007/s40009-024-01416-1","DOIUrl":"10.1007/s40009-024-01416-1","url":null,"abstract":"<div><p>The present study was focused to determine bioactive constituents in fresh &amp; dried leaves (shade dry, oven dry) of cultivated <i>Cinnamomum tamala.</i> A total of 17 bioactive constituents were found through GC–MS analysis, and exhibited maximum (96.28%) in fresh leaves as compared to shade dry leaves (94.67%). Among them, cinnamaldehyde was found significantly major active constituent in the leaves (fresh 44.49%; shade dry 39.37%), followed by linalool (fresh 29.50%; shade dry 10.67%), cinnamyl acetate (fresh 4.02%; shade dry 38.81%), and limonene (fresh 6.40% and shade dry 0.27%), respectively. Results revealed that cinnamaldehyde &amp; linalool are the major constituents of <i>C. tamala.</i> Therefore, the species can be promote as an option for fulfilling the market requirement.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"701 - 704"},"PeriodicalIF":1.2,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Better Visualization of the Highest Resistant Induction to Myzus persicae in Wild crucifer, Rorippa indica 更好地观察野生十字花科植物 Rorippa indica 对柿蕈蚊最高抗性的诱导情况
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-05-28 DOI: 10.1007/s40009-024-01404-5
Hossain Ali Mondal, Bablu Paul, Farzana Ahmad, V. Ranjithkumar, Moumita Mallick
{"title":"The Better Visualization of the Highest Resistant Induction to Myzus persicae in Wild crucifer, Rorippa indica","authors":"Hossain Ali Mondal,&nbsp;Bablu Paul,&nbsp;Farzana Ahmad,&nbsp;V. Ranjithkumar,&nbsp;Moumita Mallick","doi":"10.1007/s40009-024-01404-5","DOIUrl":"10.1007/s40009-024-01404-5","url":null,"abstract":"<div><p><i>Rorippa</i> <i>indica,</i> a wild <i>Crucifer</i> is already reported as resistant host to aphid. This wild crucifer draws an attention for molecular plant-aphid interaction biology to address the resistance mechanism as there is no resistant source in the <i>Brassicaceae</i> family to aphid proliferation. Before addressing the resistance, identification of the highest level of resistance is required. In the present study, identification of the highest resistant reaction to the aphid proliferation is focused from <i>Rorippa indica</i> -<i>Myzus</i> <i>persicae</i> interaction. Moreover, another objective is to identify the parameter for better visualization of the highest resistant reaction to <i>Myzus persicae</i>. Thus, three different aphids’ release like 5, 10 and 20 Myzus persicae were released in each foliage and monitoring the total aphid proliferation, total progeny proliferation, marginal progeny proliferation in 24, 48 and 72 h time point. Three elevated doses of aphid inoculums were explored to test the first hypothesis on whether the progeny production was dependent on an initial aphid density or not. The second hypothesis was on whether the host resistance induction was dependent on an initial aphid density or not. The third hypothesis was formulated on whether there was any differential ‘footprint’ developed in aphid herbivore vascular sap from the highest level of host resistance or not.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"365 - 368"},"PeriodicalIF":1.2,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40009-024-01404-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141165623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Report of Caliothrips indicus (Bagnall) as a Serious Pest of Sesbania bispinosa: Incidence, Diagnosis and Molecular Analysis 报告严重危害双子叶芝的蓟马(Caliothrips indicus (Bagnall)):发生、诊断和分子分析
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-05-28 DOI: 10.1007/s40009-024-01407-2
Jaydeep Halder, Suraj Soni, Suhas G. Karkute
{"title":"Report of Caliothrips indicus (Bagnall) as a Serious Pest of Sesbania bispinosa: Incidence, Diagnosis and Molecular Analysis","authors":"Jaydeep Halder,&nbsp;Suraj Soni,&nbsp;Suhas G. Karkute","doi":"10.1007/s40009-024-01407-2","DOIUrl":"10.1007/s40009-024-01407-2","url":null,"abstract":"<div><p>An upsurge of <i>Caliothrips indicus</i> (Bagnall) was observed during April to July, 2022 and 2023 in <i>Sesbania bispinosa</i> in Varanasi and adjoining districts, Uttar Pradesh. Several small white streaks appeared on the leaves which eventually dried up. <i>C. indicus</i> infested 40–60% of the plants which appeared unkempt. In terms of spatial diversity, adults gathered on the terminal area of the plant, while developing stages tended to feed more towards the basal portion. The incidence was more common during the hot and dry summer months with peak nymphal (7.9 per compound leaf) and adult (6.09 per compound leaf) populations during 28th standard meteorological weeks. The nymphal and adult populations per compound leaf were 3.35–7.1 and 2.89–5.32, respectively. Considering the incidence and its importance, we studied the molecular and morphological taxonomy, seasonal incidence and likely migration path of <i>C. indicus</i> in the vegetable ecosystem.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"697 - 699"},"PeriodicalIF":1.2,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141165569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circular Ring Structure with Tapered Feed Monopole Antenna for ISM-III/5G (24 GHz) Applications 用于 ISM-III/5G (24 GHz) 应用的圆环结构锥形馈电单极天线
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-04-05 DOI: 10.1007/s40009-024-01403-6
Amit Abhishek, P. Suraj
{"title":"Circular Ring Structure with Tapered Feed Monopole Antenna for ISM-III/5G (24 GHz) Applications","authors":"Amit Abhishek,&nbsp;P. Suraj","doi":"10.1007/s40009-024-01403-6","DOIUrl":"10.1007/s40009-024-01403-6","url":null,"abstract":"<div><p>A circular ring structure with a tapered feed monopole antenna is designed with size of 1.3 λ<sub>0</sub> × 1.4 λ<sub>0</sub> × 0.095 λ<sub>0</sub> mm<sup>3</sup> (L × B × H). The maximum reflection coefficient |S<sub>11</sub>| with the tapered feed is −36 dB, without tapered feed is −25.55 dB and peak gain is ≥ 5.0 dBi in both cases. Proposed antenna produces bandwidth of 1.25 GHz while allocated bandwidth for ISM-III band is 250 MHz. The obtained bandwidth is wider than the allocated bandwidth. Proposed antenna qualifying the obtained measured results. This antenna is applicable for 5G Communication, Radar, and satellite services with miniaturization feature.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"671 - 676"},"PeriodicalIF":1.2,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of Locally Sourced Weed Biomass Mulches on Productivity and Weed Control Efficiency of Rice [Oryza sativa (L.)] Under Organic Management in an Eastern Himalayan Acidic Inceptisols of India 印度喜马拉雅山东部酸性渍土地区有机管理下当地杂草生物质覆盖物对水稻[Oryza sativa (L.)] 产量和杂草控制效率的影响
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-03-28 DOI: 10.1007/s40009-023-01386-w
Amit Kumar, Raghavendra Singh, Subhash Babu, R. K. Avasthe, T. L. Bhutia, Saurav Saha, Ramgopal Devadas, E. L. Devi, B. A. Gudade, Shyam Karan, V. K. Mishra
{"title":"Impact of Locally Sourced Weed Biomass Mulches on Productivity and Weed Control Efficiency of Rice [Oryza sativa (L.)] Under Organic Management in an Eastern Himalayan Acidic Inceptisols of India","authors":"Amit Kumar,&nbsp;Raghavendra Singh,&nbsp;Subhash Babu,&nbsp;R. K. Avasthe,&nbsp;T. L. Bhutia,&nbsp;Saurav Saha,&nbsp;Ramgopal Devadas,&nbsp;E. L. Devi,&nbsp;B. A. Gudade,&nbsp;Shyam Karan,&nbsp;V. K. Mishra","doi":"10.1007/s40009-023-01386-w","DOIUrl":"10.1007/s40009-023-01386-w","url":null,"abstract":"","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 5","pages":"571 - 577"},"PeriodicalIF":1.2,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140325190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Multimodal Feature Representation Model for Transfer-Learning-Based Identification of Images 基于迁移学习的图像识别多模态特征表征模型
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-03-28 DOI: 10.1007/s40009-024-01402-7
Nupoor Yawale, Neeraj Sahu, Nikkoo Khalsa
{"title":"A Multimodal Feature Representation Model for Transfer-Learning-Based Identification of Images","authors":"Nupoor Yawale,&nbsp;Neeraj Sahu,&nbsp;Nikkoo Khalsa","doi":"10.1007/s40009-024-01402-7","DOIUrl":"10.1007/s40009-024-01402-7","url":null,"abstract":"<div><p>Digital image classification assists in distinguishing natural and synthetic images to detect computer-generated objects. However, CGI improvements make it difficult to discern synthetic photos from genuine ones. Researchers suggest multiple deep learning strategies to differentiate these photo sets utilizing thorough feature analysis. These models are either complex or do not handle image sub-components, decreasing efficiency in large-scale applications. These models fail categorically. To address these issues, this work proposes a novel high-density bio-inspired feature analysis deep learning model for natural and synthetic image sub-classification. A YoLo model initially recognizes objects in input image sets. Processed separately, a hybrid LSTM/GRU model predicts high-density feature sets, which are processed by Elephant Herding Optimization (EHO) Models to identify high inter-class variance feature sets. A customized 1D CNN model is used to categorize the desired features into natural and synthetic components. These classification results establish whether the input image is natural, synthetic, or both. In real-time scenarios, the proposed model is able to improve standard classification models with 8.7% greater accuracy, 10.9% higher precision, 3.2% higher recall, and 8.4% higher AUC.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 6","pages":"663 - 669"},"PeriodicalIF":1.2,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140325109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stability Analysis of Linear Control Systems by Wall’s Continued Fraction Expansion 用沃尔连续分数展开法分析线性控制系统的稳定性
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-03-26 DOI: 10.1007/s40009-024-01398-0
Hooman Fatoorehchi
{"title":"Stability Analysis of Linear Control Systems by Wall’s Continued Fraction Expansion","authors":"Hooman Fatoorehchi","doi":"10.1007/s40009-024-01398-0","DOIUrl":"10.1007/s40009-024-01398-0","url":null,"abstract":"<div><p>Based on a particular continued fraction expansion, the Euclidean division scheme, and the Faddeev–LeVerrier algorithm, we propose an innovative approach to stability analysis for linear time-invariant control systems. Our method offers a comprehensive analytical framework that facilitates the determination of the range of stable controller gains for closed-loop systems, whether presented in the frequency domain or the state space. Unlike the Routh–Hurwitz criterion, our technique is exempt from the ad hoc rules that govern specific cases, thus advancing analytical rigor. Moreover, in certain scenarios, our method allows for the identification of instability midstream, thereby conserving computational resources. The proposed method is conceptually lucid and readily implementable, as exemplified by three illustrative instances.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 5","pages":"555 - 559"},"PeriodicalIF":1.2,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140299351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","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