National Academy Science Letters最新文献_第7页

New Distributional Record of Padina ditristromatica Ni-Ni-Win and H. Kawai (Dictyotaceae, Phaeophyta) from the Bay of Bengal Coast, India 印度孟加拉湾沿岸双叶藻科Ni-Ni-Win和H. Kawai分布新记录

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-03-07 DOI: 10.1007/s40009-025-01623-4

P. Chellamanimegalai, Geetanjali Deshmukhe, P. Layana, Annam Pavan Kumar

{"title":"New Distributional Record of Padina ditristromatica Ni-Ni-Win and H. Kawai (Dictyotaceae, Phaeophyta) from the Bay of Bengal Coast, India","authors":"P. Chellamanimegalai, Geetanjali Deshmukhe, P. Layana, Annam Pavan Kumar","doi":"10.1007/s40009-025-01623-4","DOIUrl":"10.1007/s40009-025-01623-4","url":null,"abstract":"<div><p>The present study documents <i>Padina ditristromatica</i> Ni-Ni-Win and H. Kawai as a new record from the coast of Tiruchendur, Tamil Nadu, on the Bay of Bengal, India. The investigation into the morphological and anatomical characterizations highlights key diagnostic features of <i>P. ditristromatica</i>, including a flabellate thallus with moderate to heavy calcification on both surfaces, two cell layers at the inrolled margins, 2–3 cell layers in the middle to basal portions, a thickness of 56–145 μm, hairlines on both surfaces with unequal distance, and sporangial lines on the inferior surface parallel to the hairlines. The presence of an indusium and the absence of a vaughaniella stage are also noted as prominent diagnostic features. Morphometric variables were analyzed to provide additional information for identification keys. The results are consistent with previous studies on <i>P. ditristromatica</i> and highlight the potential for misidentifying it with other species that also have a flabellate thallus in Indian waters.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"49 3","pages":"365 - 371"},"PeriodicalIF":1.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380281","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

Comparative Dynamic Analysis of Concrete Beam Behavior for Different Loading Conditions Using the Method of Initial Functions 不同荷载条件下混凝土梁性能的初始函数法对比动力分析

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-03-05 DOI: 10.1007/s40009-025-01625-2

Jitendra Namdeo, S. K. Dubey

引用次数: 0

Volatile Organic Compound Diversity Among Cultivated and Wild Cotton Species Indicates Plasticizer Contamination of Soil 栽培和野生棉花挥发性有机物多样性表明增塑剂污染土壤

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-03-01 DOI: 10.1007/s40009-025-01629-y

Kulandaivelu Velmourougane, Sanika Bhagawatrao Nasare, Pooja Verma, Manikandan Angamuthu, Lalita Rameshwar Harinkhede, Pranali Tarachand Bansod, Jimmy Bhardwaj Vaidya, Vinita Prashant Gotmare, Yenumula Gerard Prasad

引用次数: 0

Distribution Record and Occurrence of Juglans regia L. From Ramban and Chamba Districts of North Western Himalayas 喜马拉雅山脉西北部兰班和昌巴地区核桃的分布记录和发生

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-25 DOI: 10.1007/s40009-025-01628-z

Munish Sharma, Munit Sharma, Munish Sharma

{"title":"Distribution Record and Occurrence of Juglans regia L. From Ramban and Chamba Districts of North Western Himalayas","authors":"Munish Sharma, Munit Sharma, Munish Sharma","doi":"10.1007/s40009-025-01628-z","DOIUrl":"10.1007/s40009-025-01628-z","url":null,"abstract":"<div><p>This study records the distribution and occurrence of <i>Juglans regia</i> L. [Juglandaceae: Magnoliophyta], commonly known as walnut, a wild tree, in the Ramban district of the Union Territory of Jammu and Kashmir and the Chamba district of Himachal Pradesh. Despite the historical cultivation of walnuts in these regions, there is a lack of comprehensive documentation on the presence of naturally occurring wild populations. During 2021–2023, field surveys were conducted in the Ramban District of JKUT and the Chamba District of Himachal Pradesh in the North Western Himalayas to assess the distribution and occurrence of <i>Juglans regia</i> L. Various sampling sites based on their habitat suitability and accessibility were selected. Photographic documentation and herbarium preparation to record the occurrence of <i>Juglans regia</i> L. botanical, capturing diagnostic morphological features such as flowers, leaves, stems, and fruits for species identification were done. Nomenclature, taxonomy, distribution, phenology, ecological notes, and colour photographs of the botanical specimens were provided for easy identification. These findings represent a significant addition to the botanical records of the North Western Himalayas, providing new insights into the natural distribution and occurrence of walnuts.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"49 3","pages":"401 - 406"},"PeriodicalIF":1.1,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915870","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

Widespread Occurrence of Foot Trembling Behaviour Among Wintering Shorebirds in a Degraded Coastal Ecosystem 在退化的海岸生态系统中越冬滨鸟的足部颤抖行为的广泛发生

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-24 DOI: 10.1007/s40009-025-01622-5

T. R. Athira, K. A. Rubeena, K. M. Aarif, M. Girish Babu, K. Jishnu, T. Jobiraj, P. Thejass

{"title":"Widespread Occurrence of Foot Trembling Behaviour Among Wintering Shorebirds in a Degraded Coastal Ecosystem","authors":"T. R. Athira, K. A. Rubeena, K. M. Aarif, M. Girish Babu, K. Jishnu, T. Jobiraj, P. Thejass","doi":"10.1007/s40009-025-01622-5","DOIUrl":"10.1007/s40009-025-01622-5","url":null,"abstract":"<div><p>This study examines foot trembling behaviour in shorebirds at an important wintering ground along the west coast of India, challenging the traditional notion that this behaviour is limited to visual foragers. The research was carried out in two primary habitats within the Kadalundi-Vallikkunnu Community Reserve: mudflats and mangroves. The investigation focused on seven migratory shorebird species, including visual foragers (Tibetan Sand Plover, Greater Sand Plover, and Pacific Golden Plover), tactile foragers (Sanderling and Terek Sandpiper), and opportunistic foragers (Common Redshank and Common Greenshank). Shorebird monitoring was conducted during low tide using direct visual counts and video recording. The findings demonstrate that foot trembling is prevalent across all species studied, regardless of their foraging strategy, and is closely linked to habitat conditions affecting prey availability. Moreover, the study indicates that tactile foragers are particularly reliant on foot trembling, suggesting significant habitat degradation that impacts prey availability for species with specialized evolutionary adaptations.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"49 3","pages":"357 - 363"},"PeriodicalIF":1.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380929","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

Study on the Prevalence and Characteristics of Microplastics in the Agricultural Soil of Rice Bowl of Puducherry – Bahour, India 印度Puducherry - Bahour稻田农业土壤中微塑料的分布和特征研究

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-22 DOI: 10.1007/s40009-025-01621-6

Saoo Wan Emi Phyllei, Evenezer Mylliem Umlong, Subhankar Chatterjee

{"title":"Study on the Prevalence and Characteristics of Microplastics in the Agricultural Soil of Rice Bowl of Puducherry – Bahour, India","authors":"Saoo Wan Emi Phyllei, Evenezer Mylliem Umlong, Subhankar Chatterjee","doi":"10.1007/s40009-025-01621-6","DOIUrl":"10.1007/s40009-025-01621-6","url":null,"abstract":"<div><p>Microplastics (MPs) are an emerging pollutant that has been extensively detected in all the compartments of the environment. However, little study has been done on MP pollution in terrestrial environments. In this study, we investigated the MPs abundance in the agricultural soil of Bahour, Puducherry, during pre and post-irrigation periods. A total of 995 MPs were found in pre-irrigation samples ranging from 53 to 90 particles/kg of soil with a mean (± SE) of 66.33 ± 2.61 particles/kg. In the post-irrigation samples, 899 MPs ranged from 53 to 72 particles/kg of soil, with a mean (± SE) of 59.93 ± 1.76 particles/kg were detected. The average abundance of MPs found was 63.13 ± 2.19 particles/kg of soil. MPs size ranges from 50 µm to 4.5 mm were detected using microscopic identification. The main morphotypes of MPs observed were fiber, fragments, film, foams, and pellets. Fibers were the most abundant polymer, with 63.67%, and foams were the least abundant polymer, with 0.89%. FTIR data showed the probable presence of Nylon as a major polymer type along with Polystyrene, High-Density Polyethylene, Low-Density Polyethylene, and Polypropylene. MPs in this agricultural soil may result from the degradation of macroplastics due to UV radiations, mechanical weathering, contamination through wastewater irrigation, atmospheric deposition, and contaminated composts. This is the first report on the prevalence and characteristics of microplastics in the agricultural soil of Puducherry’s ‘rice bowl.’ The results of this study will motivate further research to enhance our understanding of the sources, impacts, and accumulation of MPs in agricultural soil and to identify effective management practices and mitigation strategies.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"49 3","pages":"351 - 356"},"PeriodicalIF":1.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380948","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

Distributional Range Extension of Honeycomb worm Sabellaria alveolata (Linnaeus, 1767) (Polychaeta: Sabellariidae) to the Eastern Coast of India, Bay of Bengal 蜂房虫（林奈，1767）（多毛纲：蜂房虫科）在印度东海岸及孟加拉湾的分布范围扩展

IF 1.3 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-20 DOI: 10.1007/s40009-024-01596-w

Jyoshna Pradhan, S. Balakrishnan, Prasad Chandra Tudu

引用次数: 0

The Evolution, Characteristics, and Potential of Manufactured Sand in Concrete: A Short Review 混凝土中人造砂的演变、特性和发展潜力综述

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-20 DOI: 10.1007/s40009-025-01624-3

Yash Rathore, Juned Raheem

引用次数: 0

Performance of Non-Puddled Machine Transplanted Rice over Puddled Machine Transplanted Rice in Thanjavur District of Tamil Nadu 泰米尔纳德邦Thanjavur地区非水坑机插秧水稻比水坑机插秧水稻的性能

IF 1.2 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-18 DOI: 10.1007/s40009-025-01620-7

S. Elamathi, K. Subrahmaniyan, M. Raju, C. Umamaheswari, P. Anandhi

{"title":"Performance of Non-Puddled Machine Transplanted Rice over Puddled Machine Transplanted Rice in Thanjavur District of Tamil Nadu","authors":"S. Elamathi, K. Subrahmaniyan, M. Raju, C. Umamaheswari, P. Anandhi","doi":"10.1007/s40009-025-01620-7","DOIUrl":"10.1007/s40009-025-01620-7","url":null,"abstract":"<div><p>Manual transplanted rice is labor-intensive, requires a large amount of water, and makes soil poor. Keeping this in view, Non-puddled machine transplanted rice (NPMTR) as an alternative planting technique for puddled machine transplanted rice (PMTR) was tested at Tamil Nadu Rice Research Institute (TRRI), Aduthurai during <i>Kharif</i> seasons 2016 to 2020. The experimental data was analyzed using an independent two-sample t-test. The statistical analysis results indicated that NPMTR and PMTR rice planting techniques did not show any significant difference in rice grain yields and recorded 4.82 and 5.06 t/ha respectively. However, a significant (<i>P</i> < 0.00) higher water use efficiency (4.852 kg/ ha mm) was observed under NPMTR, saving approximately 21% water with a 4.97% yield penalty compared to PMTR. In addition, economic analysis results also indicated a higher benefit-cost ratio (B: C Ratio) of 2.29 under NPMTR than 2.09 in PMTR. NPMTR is cost-effective (less production cost ₹ 5880/ha), resource-saving (fuel 26 L/ ha, energy (1220 MJ/ ha), time (5.5 h/ ha) and water (250.4 mm/ ha), easy to practice and reliable rice transplanting method under fast-changing global climatic conditions.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 2","pages":"149 - 152"},"PeriodicalIF":1.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856457","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

Handcrafted Feature and Deep Features Based Image Classification Using Machine Learning Models 基于机器学习模型的手工特征和深度特征图像分类

IF 1.1 4区综合性期刊

National Academy Science Letters Pub Date : 2025-02-05 DOI: 10.1007/s40009-025-01616-3

Anupam Yadav, Ali Khatibi, H. S. Shreenidhi, Saroj Kumar Gupta, Abhilasha Jadhav, Mandeep Kaur Chohan, G. Sanyasi Raju, Ahmed Alkhayyat

引用次数: 0