发布求助
文献互助 智能选刊 最新文献

National Academy Science Letters最新文献

筛选
英文 中文
A Compact E Shaped MMR Wideband Bandpass Filter with Notched Band Utilizing SIR 一种利用SIR的带陷波带的紧凑E形MMR宽带带通滤波器
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-26 DOI: 10.1007/s40009-024-01476-3
Amit Kumar, Dharmendra Kumar Jhariya
{"title":"A Compact E Shaped MMR Wideband Bandpass Filter with Notched Band Utilizing SIR","authors":"Amit Kumar,&nbsp;Dharmendra Kumar Jhariya","doi":"10.1007/s40009-024-01476-3","DOIUrl":"10.1007/s40009-024-01476-3","url":null,"abstract":"<div><p>This article presents a compact E-shaped wideband bandpass filter with a single notch band. The wideband response of proposed bandpass filter is obtained from E shaped multimode resonator (MMR). A single notched band is obtained by embedded a SIR to suppressed the radio signal fall in passband range. This filter demonstrates a fractional bandwidth of 119.4%. To verify the effectiveness of the design, the filter is fabricated on FR4 with a dielectric constant <b>(</b>ε<sub>r</sub>) of 4.4 and a thickness(t) of 1.6 mm. The passband is from 2.43 to 9.63 GHz, with a notch at 5.86 GHz. The designed bandpass filter demonstrates an insertion loss of 1.76 dB and a return loss &gt; 10 dB. The filter has a compact size of 24 mm× 6.52 mm.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 3","pages":"327 - 331"},"PeriodicalIF":1.3,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170173","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
Identification of a Hidden movement by Using LLCPT Algorithm 用LLCPT算法识别隐藏运动
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-25 DOI: 10.1007/s40009-024-01479-0
Pharindra Kumar Sharma, Neeraj Sahu, Swatantra Kumar Sahu, Neha Jain
{"title":"Identification of a Hidden movement by Using LLCPT Algorithm","authors":"Pharindra Kumar Sharma,&nbsp;Neeraj Sahu,&nbsp;Swatantra Kumar Sahu,&nbsp;Neha Jain","doi":"10.1007/s40009-024-01479-0","DOIUrl":"10.1007/s40009-024-01479-0","url":null,"abstract":"<div><p>In this paper, proposed an algorithm with the name LLCPT, that will trace out the offender/offenders related to a crime. The idea used in this algorithm takes into consideration that, almost everybody uses mobile phones now a days be it basic phone or smart phone. This leads us to notice that, offender/s too may use or carry a mobile phone at or near the site of crime. The LLCPT algorithm works on the principle of earth position and calculate path of mobile.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 3","pages":"333 - 335"},"PeriodicalIF":1.3,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40009-024-01479-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169057","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
Development of a Culture-Free Herbal-Aided Method for Rapid Detection of Extended Spectrum β-Lactamase in Piggery Farms and Slaughterhouses 猪场和屠宰场β-内酰胺酶扩展谱快速检测方法的建立
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01487-0
Pranav Anjaria, Rajib Deb, Gyanendra Singh Sengar, N. Linda, Seema Rani Pegu, Swaraj Rajkhowa, Pranab Jyoti Das, Vivek Kumar Gupta
{"title":"Development of a Culture-Free Herbal-Aided Method for Rapid Detection of Extended Spectrum β-Lactamase in Piggery Farms and Slaughterhouses","authors":"Pranav Anjaria,&nbsp;Rajib Deb,&nbsp;Gyanendra Singh Sengar,&nbsp;N. Linda,&nbsp;Seema Rani Pegu,&nbsp;Swaraj Rajkhowa,&nbsp;Pranab Jyoti Das,&nbsp;Vivek Kumar Gupta","doi":"10.1007/s40009-024-01487-0","DOIUrl":"10.1007/s40009-024-01487-0","url":null,"abstract":"<div><p>A culture-free herbal aided assay designed for rapid detection of Extended spectrum β-lactamase producing bacterial isolates in piggery farm and slaughter house waste samples. The assay was validated with 309 piggery farm and slaughterhouse waste samples. The relative accuracy and relative sensitivity of the developed assay was found to be 85.1% and 91.3%, respectively in accordance with the culture based double antibiotic disc diffusion assay as reference method.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 4","pages":"405 - 408"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168989","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
In Vitro and Computational Studies of Indoleninyl-Pyrimido[1,2-b]Indazoles as DNA Binding Agents 吲哚胺基嘧啶[1,2-b]吲哚唑作为DNA结合剂的体外及计算研究
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01496-z
Li Xuan Yap, Abdul Qaiyum Ramle, Kae Shin Sim, Chun Hoe Tan
{"title":"In Vitro and Computational Studies of Indoleninyl-Pyrimido[1,2-b]Indazoles as DNA Binding Agents","authors":"Li Xuan Yap,&nbsp;Abdul Qaiyum Ramle,&nbsp;Kae Shin Sim,&nbsp;Chun Hoe Tan","doi":"10.1007/s40009-024-01496-z","DOIUrl":"10.1007/s40009-024-01496-z","url":null,"abstract":"<div><p>A series of indoleninyl-pyrimido[1,2-<i>b</i>]indazoles, including the parent compound <b>1</b> and its derivatives (<b>2</b>–<b>4</b>) with different substituents were previously synthesized. However, their precise mode of DNA interactions is still largely unexplored. DNA binding studies revealed that only compound <b>3</b> exhibited significant hyperchromism with a binding constant, <i>K</i><sub>b</sub> of 5 × 10<sup>6</sup> M<sup>− 1</sup>, indicating that it strongly binds to the DNA minor groove. As demonstrated from DNA denaturation studies, ionic strength studies, and molecular docking calculations, the minor groove binding ability of <b>3</b> was confirmed, with electrostatic and hydrophobic interactions involved in the formation of the DNA adduct. In summary, these preliminary findings from both computational and experimental studies suggested that <b>3</b> remains promising for further development as a cytotoxic agent targeting DNA.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 4","pages":"441 - 445"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168990","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
Cybertaxonomy to Overcome Taxonomic Impediments: A Discussion in the Context of Plants of India 克服分类障碍的网络分类学：以印度植物为例的讨论
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01478-1
Saikat Naskar
{"title":"Cybertaxonomy to Overcome Taxonomic Impediments: A Discussion in the Context of Plants of India","authors":"Saikat Naskar","doi":"10.1007/s40009-024-01478-1","DOIUrl":"10.1007/s40009-024-01478-1","url":null,"abstract":"<div><p>The highly unorganized taxonomic data needs to be organised to better understand the taxa. The term ‘taxonomic impediment’ is now widely used to indicate taxonomic research obstacles, one of which is the inadequate accessibility of taxonomic data. Cybertaxonomy, the use of multiple databases of taxonomic information to produce an accurate taxonomy, can help overcome taxonomic impediment. Since taxonomic revision involves organising fragmented data on taxa, the use of cybertaxonomic information can accelerate taxonomic research, especially in India where revision of several plant taxa is still pending. Historically, most of the plants known in India were scientifically discovered by European botanists before Independence, and the original material and other relevant documents are now in Europe. As long as access to these materials is not possible, the taxonomic revision of many plant taxa will not be completed. Cybertaxonomy allows faster and better access to various information, including original material, protologues and literature. Therefore, cybertaxonomic resources have been investigated for their usefulness in the taxonomic revision of plants.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 4","pages":"503 - 507"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168988","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 Analysis of Heat Shock Protein Sequences in Crop Species: Unravelling Phylogenetic Relationships Through Multiple Sequence Alignment 作物热休克蛋白序列的比较分析：通过多序列比对揭示系统发育关系
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01481-6
Manya Sharma, Girish Chandra Pandey
{"title":"Comparative Analysis of Heat Shock Protein Sequences in Crop Species: Unravelling Phylogenetic Relationships Through Multiple Sequence Alignment","authors":"Manya Sharma,&nbsp;Girish Chandra Pandey","doi":"10.1007/s40009-024-01481-6","DOIUrl":"10.1007/s40009-024-01481-6","url":null,"abstract":"<div><p>This research focuses on deciphering the phylogenetic relationship between staple cereals, which are crucial for the survival of humans. Our focus has been on the heat shock proteins (HSP) found in cereals, and to achieve this, we have obtained amino acid sequences in FASTA format. By utilizing bioinformatics databases and multiple sequence alignment (MSA) tools, we have compared various sequences to enhance our comprehension. Heat shock proteins (HSP) are activated in plants under heat-stress conditions. Heat stress is a significant abiotic stressor that limits crop production globally. CLUSTAL OMEGA was employed to identify the progressive alignment and phylogeny of the two sequences.The analysis of heat shock protein (HSP) sequences in the selected crop species (wheat, soybean, rice, gram, mustard, and maize) using phylogenetic methods revealed distinct evolutionary relationships. Wheat and soybean were closely clustered together, indicating a recent common ancestor, possibly due to similarities in their HSP sequences. Conversely, rice and gram, despite belonging to different genera, showed a close evolutionary connection, suggesting conserved HSP sequences that point to a shared ancestor. Mustard, while linked to rice and gram, displayed a slightly more distant common ancestor, evident in its longer branch length. Maize, with the longest branch, demonstrated significant evolutionary divergence from the other species, likely attributed to its early divergence in evolutionary history. These findings enhance our understanding of the evolutionary trajectories and the functional conservation of HSPs in these vital crop species.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 3","pages":"285 - 288"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168994","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
Typification of Two Names of Himalayan taxa Collected from Darjeeling-Sikkim Himalayas of India 印度大吉岭-锡金喜马拉雅地区两个喜马拉雅分类群名称的分类
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01495-0
Vinay Ranjan, Anant Kumar, Gopal Krishna
{"title":"Typification of Two Names of Himalayan taxa Collected from Darjeeling-Sikkim Himalayas of India","authors":"Vinay Ranjan,&nbsp;Anant Kumar,&nbsp;Gopal Krishna","doi":"10.1007/s40009-024-01495-0","DOIUrl":"10.1007/s40009-024-01495-0","url":null,"abstract":"<div><p>The Himalayan taxa <i>Begonia gemmipara</i> Hook.f. &amp; Thomson and <i>Celastrus hookeri</i> Prain are collected after a long gap from Darjeeling-Sikkim Himalayan range of India during the floristic assessment of Neora Valley National Park. During identification, it has been noticed that both the names warrant typification for the correct application of name. Hence, the both names are lectotypified here.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 2","pages":"227 - 230"},"PeriodicalIF":1.2,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856551","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
Survival of Egeria densa Under the Combined Effect of Salinity and Allelopathy of Microcystis Aeruginosa 盐度与铜绿微囊藻化感作用联合作用下的密纹线虫存活
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01483-4
Ashika Wijesinghe, Mudalige Don Hiranya Jayasanka Senavirathna
{"title":"Survival of Egeria densa Under the Combined Effect of Salinity and Allelopathy of Microcystis Aeruginosa","authors":"Ashika Wijesinghe,&nbsp;Mudalige Don Hiranya Jayasanka Senavirathna","doi":"10.1007/s40009-024-01483-4","DOIUrl":"10.1007/s40009-024-01483-4","url":null,"abstract":"<div><p>The study elucidates the survival of <i>Egeria densa</i> under increasing salinity and the allelopathic effects of the cyanobacterium <i>Microcystis aeruginosa</i> during co-existence. <i>E. densa</i> exhibited a consistent decline in growth with increasing salinity, with the lowest growth observed in a combined culture with <i>M. aeruginosa</i>. Lower salinity levels (up to 2.5 ppt) stimulated chlorophyll pigment synthesis, while higher salinity concentrations inhibited chlorophyll pigment synthesis. <i>E. densa</i>, in monoculture, showed elevated anthocyanin, carotenoid, and H<sub>2</sub>O<sub>2</sub> concentrations at higher salinity levels. Conversely, <i>E. densa</i> experienced declining chlorophyll pigment and H<sub>2</sub>O<sub>2</sub> concentrations in a combined culture at higher salinity levels. The experiment revealed that freshwater salinity influences the well-being of <i>E. densa</i> co-existing with <i>M. aeruginosa</i>.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 3","pages":"351 - 355"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168995","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
Effect of Filler on the Microstructural Behavior of Dissimilar MIG Weldments for High Pressure Vessel Applications 填料对高压容器用异种MIG焊件微观组织行为的影响
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-23 DOI: 10.1007/s40009-024-01489-y
Lochan Sharma, Amman Jakhar, Anuj Kumar Sehgal, Karan Mankotia, Sumit Saini
{"title":"Effect of Filler on the Microstructural Behavior of Dissimilar MIG Weldments for High Pressure Vessel Applications","authors":"Lochan Sharma,&nbsp;Amman Jakhar,&nbsp;Anuj Kumar Sehgal,&nbsp;Karan Mankotia,&nbsp;Sumit Saini","doi":"10.1007/s40009-024-01489-y","DOIUrl":"10.1007/s40009-024-01489-y","url":null,"abstract":"<div><p>Microstructural properties are significantly affected due to structural integrity issues. In present work an attempt has been made to study the effect of S4-C504 filler metal on the microstructural properties of API X70 and SA 516 structural steel dissimilar weld fabricated by metal inert gas welding process (MIG). Microstructure of SA 516 is basically a blend of ferrite and pearlite with grain boundary ferrite films dispersed in ferrite matrix. HAZ microstructure on API X70 side shows the partially unmixed region with some inclusions of ferrite embedded across the grain boundaries. SA516 and APIX70 weld region typically exhibit grain boundary ferrite, widmanstaten-ferrite and bainite as fine needle like structure in the fusion zone of weld metal.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 4","pages":"453 - 457"},"PeriodicalIF":1.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168991","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 Case Study of the Damage Caused by Global Warming in the Indian State of Himachal Pradesh 全球变暖对印度喜马偕尔邦造成损害的个案研究
IF 1.3 4区 综合性期刊
National Academy Science Letters Pub Date : 2024-10-22 DOI: 10.1007/s40009-024-01461-w
Ravinder Kumar, Karan Veer
{"title":"A Case Study of the Damage Caused by Global Warming in the Indian State of Himachal Pradesh","authors":"Ravinder Kumar,&nbsp;Karan Veer","doi":"10.1007/s40009-024-01461-w","DOIUrl":"10.1007/s40009-024-01461-w","url":null,"abstract":"<div><p>The objective of this ongoing research is to present a study that investigates the impact of global warming on the pattern of rainfall. The biggest shift is the change in rainfall from consistent, moderate rain throughout the monsoon season to heavy, intermittent rain interspersed with extended dry spells. In recent decades, there has been climate change in India’s monsoon rainfall patterns. The biggest distinction is that the monsoon season no longer features consistent moderate rainfall but rather torrential rainfall interspersed with extended dry intervals. This trend has continued to play out even during this year, which one are aware of. There has been both regional rainfall insufficiency and flooding this season, despite the fact that the average rainfall across India is relatively normal. One need immediate action since these catastrophic conditions are only going to get worse as global warming continues at its current rate. The authors conducted this study in every district and village of Himachal Pradesh because of the devastation that has been caused by global warming.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"48 3","pages":"303 - 307"},"PeriodicalIF":1.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168944","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
首页 上一页 下一页 尾页
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
现在去查看 取消
×
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：604180095
Book学术官方微信