National Academy Science Letters最新文献

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On Farey Graceful Labeling 关于法瑞优雅标签
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-24 DOI: 10.1007/s40009-023-01355-3
Ajay Kumar, Debdas Mishra, V. K. Srivastava
{"title":"On Farey Graceful Labeling","authors":"Ajay Kumar,&nbsp;Debdas Mishra,&nbsp;V. K. Srivastava","doi":"10.1007/s40009-023-01355-3","DOIUrl":"10.1007/s40009-023-01355-3","url":null,"abstract":"<div><p>Basically, this paper is motivated by Farey sequence. In this paper, we develop a new type of graph labeling based on Number Theoretic Sequence which we call <i>Farey graceful labeling</i>. We prove that all paths, caterpillars, cycles and hairy cycles admit a Farey graceful labeling.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 3","pages":"303 - 308"},"PeriodicalIF":1.2,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135219612","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
Homogeneity in Traditional Knowledge on Plant-Based Ethno-dyes in Reasi District, Jammu and Kashmir, India 印度查谟和克什米尔里亚西地区基于植物的民族染料传统知识的同质性
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-23 DOI: 10.1007/s40009-023-01361-5
Vasundra Sharma, Harish Chander Dutt
{"title":"Homogeneity in Traditional Knowledge on Plant-Based Ethno-dyes in Reasi District, Jammu and Kashmir, India","authors":"Vasundra Sharma,&nbsp;Harish Chander Dutt","doi":"10.1007/s40009-023-01361-5","DOIUrl":"10.1007/s40009-023-01361-5","url":null,"abstract":"<div><p>Natural dyes, especially from plants like Indigo, Madder, and Heena, have been known to mankind and are used for thousands of years by people. These dyes are nontoxic, hypo-allergic and ecofriendly and thus the best alternative to synthetic dyes. A total of 41 plant species were reported to be used as dye resource by locals of Reasi district in Jammu and Kashmir, India. Survey revealed that various parts of seven plant species are purchased from local market by the locals. All the plants exploited for producing natural dye have been grouped into seven different use categories and quantitatively analyzed for informant consensus factor (ICF). It has been observed that maximum plant species are used by the locals for coloring textiles, but statistical quantification index ‘ICF’ has proved that users have the strong consensus toward imparting colors to skin using plant species.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"437 - 440"},"PeriodicalIF":1.2,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135366422","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
On 3D Printing of Functionally Graded Implants Using Two Different Metallic Powder-Based Alloys 使用两种不同的金属粉末合金三维打印功能分级植入物
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-21 DOI: 10.1007/s40009-023-01357-1
Rupinder Singh, Minhaz Husain, Sahil Mehra
{"title":"On 3D Printing of Functionally Graded Implants Using Two Different Metallic Powder-Based Alloys","authors":"Rupinder Singh,&nbsp;Minhaz Husain,&nbsp;Sahil Mehra","doi":"10.1007/s40009-023-01357-1","DOIUrl":"10.1007/s40009-023-01357-1","url":null,"abstract":"<div><p>For 3D printing of single metallic alloys like Ti-6Al-4 V, Ni-625, 17-4 precipitate hardened (PH) stainless steel (SS), etc. in powder form the use of direct metal laser sintering (DMLS) is widely reported. This study outlines the 3D printing of two different metallic powder-based alloys (17-4 PH SS and Ni-625) for fabricating functionally graded implants (FGI) by using phelan and dodecahedron as an infill to get meta-structures with tunable properties of Ni-625 between 17 and 4 PH SS layers. The results indicate that the 3D-printed dodecahedron-based meta-structure is recommended for the fabrication of FGI due to a higher corrosion rate (CR) of 0.081 mm<sup>2</sup>/yr and less Young's modulus (E) 863.86 MPa than phelan having CR 0.023 mm<sup>2</sup>/yr and E 900 MPa.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"369 - 374"},"PeriodicalIF":1.2,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135511755","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
Supplementary manual pollination: a potential technology to enhance the yield and quality in white fleshed dragon fruit variety 辅助人工授粉:提高白肉火龙果产量和质量的潜在技术
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-14 DOI: 10.1007/s40009-023-01356-2
K. M. Boraiah, P. S. Basavaraj, C. B. Harisha, Vijaysinha D. Kakade, Hanamant Halli, Prakash Kate, Jagadish Rane, H. Pathak
{"title":"Supplementary manual pollination: a potential technology to enhance the yield and quality in white fleshed dragon fruit variety","authors":"K. M. Boraiah,&nbsp;P. S. Basavaraj,&nbsp;C. B. Harisha,&nbsp;Vijaysinha D. Kakade,&nbsp;Hanamant Halli,&nbsp;Prakash Kate,&nbsp;Jagadish Rane,&nbsp;H. Pathak","doi":"10.1007/s40009-023-01356-2","DOIUrl":"10.1007/s40009-023-01356-2","url":null,"abstract":"<div><p>In India, during the initial period of dragon fruit introduction, white fleshed variety was planted in large acreage. However, the yield of this variety was very low, since it bears a greater proportion of smaller fruits. The supplementary manual self- and cross-pollinations enhanced fruit size up to 30 (321 g) and 82% (452 g), respectively, compared to natural pollination (247 g). Consequently, an additional yield of 3.0 (33%) and 9.0 tons (100%) per acre can be expected if manual self- and cross-pollinations adopted, respectively, over and above the actual yield of natural pollination (8–10 tons per acre). Hence, supplementary pollination can potentially enhance the yield up to 18 tons per acre, besides improving the fruit quality. The present study findings bring hope to farmers who planted the white dragon fruit variety and improve their livelihood by doubling their income.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"335 - 338"},"PeriodicalIF":1.2,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135767315","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
Socio-economic Impacts of Agricultural Technologies on Farmers’ Livelihood 农业技术对农民生计的社会经济影响
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-13 DOI: 10.1007/s40009-023-01351-7
Jagdeep Singh, Mamta Kumari
{"title":"Socio-economic Impacts of Agricultural Technologies on Farmers’ Livelihood","authors":"Jagdeep Singh,&nbsp;Mamta Kumari","doi":"10.1007/s40009-023-01351-7","DOIUrl":"10.1007/s40009-023-01351-7","url":null,"abstract":"<div><p>Farmers toil day and night to feed humanity, while their social and economic situations deteriorate by the day. Indian agriculture is primarily dependent on monsoon which leads to strong crop output. Farmers face numerous problems such as lack of mechanization, irrigation, working capital, fertilizers &amp; pesticides, availability of quality seeds at affordable prices, MSP, and fragmented land-holdings. Agriculture is a crucial sector for global food security and economic development. This research aims to provide an in-depth analysis of the social and economic impacts of agricultural technologies on farmers' livelihoods. The study was conducted for 32 districts of 3 states (<i>n</i> = 1440) in India during 2020–2021. The study found that agricultural technologies have positive socioeconomic impacts on farmers’ livelihoods. The research also found that technology is necessary and integrated part of agriculture to boost production, efficiency, and sustainability.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 3","pages":"227 - 231"},"PeriodicalIF":1.2,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135855208","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
On Tertiary Recycling of PVDF with Reinforcement of Waste Dry Cell Components 利用废弃干电池组件加固聚偏二氟乙烯(PVDF)的三级循环利用
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-12 DOI: 10.1007/s40009-023-01352-6
Ankush Mehta, Rupinder Singh, B. S. Pabla
{"title":"On Tertiary Recycling of PVDF with Reinforcement of Waste Dry Cell Components","authors":"Ankush Mehta,&nbsp;Rupinder Singh,&nbsp;B. S. Pabla","doi":"10.1007/s40009-023-01352-6","DOIUrl":"10.1007/s40009-023-01352-6","url":null,"abstract":"<div><p>Commercially dry cells are being used extensively both for domestic and industrial applications, and their disposal is also a challenge for solid waste management. Polyvinylidene fluoride (PVDF) thermoplastic-based functional parts are also in high demand for electronic gadgets, touch screens, sensors, etc., and their recycling may help in urban mining. Significant studies have been reported on primary (1°) and secondary (2°) recycling of PVDF, but yet less has been testified on its tertiary (3°) recycling. In this study, the 3° recycling of PVDF was performed by reinforcing different chemicals/salts (graphite, MnO<sub>2</sub>, ZnCl<sub>2,</sub> and NH<sub>4</sub>Cl) recovered from waste dry cells used in domestic applications. The composition/proportion of different reinforcements in a 3° recycled PVDF composite matrix was ascertained based on the melt flow index (MFI) for its possible 3D printing using fused filament fabrication (FFF). Finally, the mechanical and dielectric properties of 3° recycled PVDF composites were observed based on X-ray diffraction (XRD), and Fourier-transformed infrared spectroscopy (FTIR) analysis. The results suggest that the proposed 3° recycled PVDF composite matrix may be used for sensing applications due to the formation of the <i>β</i> phase.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 3","pages":"313 - 317"},"PeriodicalIF":1.2,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135923256","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
Extreme Weather Events and Scientific Research 极端天气事件与科学研究
IF 1.1 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-12 DOI: 10.47262/sl/11.3.132023900
{"title":"Extreme Weather Events and Scientific Research","authors":"","doi":"10.47262/sl/11.3.132023900","DOIUrl":"https://doi.org/10.47262/sl/11.3.132023900","url":null,"abstract":"The catastrophic flood by which a huge area of Emilia-Romagna region (northern Italy) was affected last May is the most recent out of a long queue of extreme weather events involving the Italian territory throughout the last 13 years. When dealing with extreme weather phenomena, representing nowadays a \"minimum common denominator\" worldwide, global warming should be kept into a special account, given that the highest mean temperatures on Earth in the last 140 years have been recorded between 2015 and 2022. This implies that consistent financial investments are needed to adequately cope with extreme weather events in Italy as well as in many other countries, thereby adopting an ad hoc \"mind and paradigm change\" and through a multidisciplinary, basic and applied, \"One Health\"-inspired research effort. To this aim, we should firmly keep in mind that the money sums invested in \"prevention\" are exceedingly lower than those spent for the \"therapy\" of natural disasters.","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"55 1","pages":"0"},"PeriodicalIF":1.1,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969644","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
Deep Regression Network for Single-Image Super-Resolution Based on Down- and Upsampling with RCA Blocks 基于 RCA 块降采样和升采样的单图像超分辨率深度回归网络
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-07 DOI: 10.1007/s40009-023-01353-5
S. Karthick, N. Muthukumaran
{"title":"Deep Regression Network for Single-Image Super-Resolution Based on Down- and Upsampling with RCA Blocks","authors":"S. Karthick,&nbsp;N. Muthukumaran","doi":"10.1007/s40009-023-01353-5","DOIUrl":"10.1007/s40009-023-01353-5","url":null,"abstract":"<div><p>A regression network is created to transform low-resolution (LR) images into high-resolution (HR) images. The LR images are processed using a deep regression approach for producing HR images. LR images are initially used as input, and the raw input image is subsequently enlarged to adjust the image size without changing the information. An image’s physical size can be altered without altering the pixel proportions. After that, a regression network produces high-quality images after resizing low-quality ones. According to the simulation study, the proposed method achieves 98% accuracy, 0.02% error, 97% precision, and 94% specificity.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 3","pages":"279 - 283"},"PeriodicalIF":1.2,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135252042","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 Hybrid Precoded-Companding Scheme for PAPR Reduction in OFDM systems 用于降低 OFDM 系统 PAPR 的混合编码压缩方案
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-10-06 DOI: 10.1007/s40009-023-01354-4
V. J. Arulkarthick, K. Srihari, C. Arvind, M. A. Mukunthan, R. Sundar
{"title":"A Hybrid Precoded-Companding Scheme for PAPR Reduction in OFDM systems","authors":"V. J. Arulkarthick,&nbsp;K. Srihari,&nbsp;C. Arvind,&nbsp;M. A. Mukunthan,&nbsp;R. Sundar","doi":"10.1007/s40009-023-01354-4","DOIUrl":"10.1007/s40009-023-01354-4","url":null,"abstract":"<div><p>This letter proposes a hybrid precoded-companding scheme (HPCS) in which the orthogonal frequency-division multiplexing (OFDM) signal is initially precoded using the Zadoff–Chu sequence, and the intermediate signal is sine companded to minimize the peak-to-average-power-ratio (PAPR) value of the OFDM signal. It is evident from the simulation results that for OFDM signal with 512 and 1024 sub carriers, the PAPR value is reduced by 64.38 and 51.13%, respectively, when compared with the QPSK modulated OFDM signal. Also the bit error rate (BER) performance at the receiver is improved by 5.61 and 4.66 dB when compared with the original OFDM signal.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 3","pages":"285 - 291"},"PeriodicalIF":1.2,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135352017","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 Assessment of Proximate and Phytochemical Composition and Antioxidant, Anti-diabetic and Anti-Inflammatory Properties of Pericarp and Seeds of Capsicum annum L. 辣椒果皮和种子的化学成分及抗氧化、抗糖尿病、抗炎性能的比较研究
IF 1.1 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-09-29 DOI: 10.47262/sl/11.3.132023800
{"title":"Comparative Assessment of Proximate and Phytochemical Composition and Antioxidant, Anti-diabetic and Anti-Inflammatory Properties of Pericarp and Seeds of Capsicum annum L.","authors":"","doi":"10.47262/sl/11.3.132023800","DOIUrl":"https://doi.org/10.47262/sl/11.3.132023800","url":null,"abstract":"This study evaluates the proximate and phytochemical composition and antioxidant, anti-diabetic, and anti-inflammatory properties of Capsicum annum L. seed powder (CSP) and pericarp powder (CPP). The CSP and CPP were analyzed for moisture, crude protein, ash, crude fat, crude fiber, nitrogen-free extract, flavonoids, phenol, tannins, alkaloids, saponins, 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic) acid (ABTS), ferric ion reducing antioxidant power (FRAP), alpha-amylase, alpha-glucosidase, lipase and albumin inhibitory properties and anti-proteinase properties. The moisture, crude protein, ash and crude fat concentrations were significantly higher in CPP compared to CSP; while the concentrations of crude fiber and nitrogen-free extracts were significantly lower in CSP than CPP. The phenol, alkaloids and saponins concentrations of the CPP were significantly higher than CSP; while the flavonoids and steroid concentrations were higher in CPP compared to CSP. The vitamin C, DPPH, ABTS, FRAP and lipid peroxidation inhibition of CPP was significantly higher than CSP. The alpha-amylase inhibition and alpha-glucosidase inhibition of CPP were significantly higher than in CSP. The lipase inhibitory and anti-proteinase properties of CSP were higher than CPP; while the albumin inhibitory property was higher in CPP than in CSP. In conclusion, CPP offers better protein, minerals, and fat content compared to CSP with stronger antioxidant, anti-cholesterol, and anti-diabetic properties.","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 1","pages":"0"},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132383","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
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