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Theoretical Prediction for Thermo-Elastic Properties of TiO2 (Rutile Phase) 二氧化钛（金红石相）热弹性性能的理论预测
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-11-08 DOI: 10.1007/s40009-023-01358-0
Anjani K. Pandey, Chandra K. Dixit, Shivam Srivastava, Prachi Singh, Shipra Tripathi
{"title":"Theoretical Prediction for Thermo-Elastic Properties of TiO2 (Rutile Phase)","authors":"Anjani K. Pandey,&nbsp;Chandra K. Dixit,&nbsp;Shivam Srivastava,&nbsp;Prachi Singh,&nbsp;Shipra Tripathi","doi":"10.1007/s40009-023-01358-0","DOIUrl":"10.1007/s40009-023-01358-0","url":null,"abstract":"<div><p>The equation of state plays a crucial role in calculating the elastic properties of nano TiO<sub>2</sub> (Rutile phase). In this study, we used three different equations of state, namely Birch Murnaghan 3rd EOS, modified Lenard Jones EOS, and Vinet–Rydberg EOS to investigate the thermoelastic properties of titanium dioxide under high pressure. The obtained results for pressure calculations at different values of <i>V</i>/<i>V</i><sub>0</sub> are in good agreement with available experimental data, indicating that these EOSs can be used for calculating the thermoelastic properties of nanomaterials as well. In this research, we established the bulk modulus, first pressure derivative of bulk modulus, and the Grüneisen parameter. The theoretically calculated results were compared with the available data, and it was found that the ratio of <i>γ</i>/Ω (where Ω = <i>V</i>/<i>V</i><sub>0</sub>), i.e., the variation of Grüneisen parameter with volume compression ratio remains constant for solids.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"375 - 378"},"PeriodicalIF":1.2,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135341194","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 Rainfall Analysis for Development of Rainfall Intensity Duration Frequency Curves for Semiarid Region of Andhra Pradesh in India 极端降雨分析用于编制印度安得拉邦半干旱地区的降雨强度-持续时间-频率曲线
IF 1.2 4区 综合性期刊
National Academy Science Letters Pub Date : 2023-11-01 DOI: 10.1007/s40009-023-01360-6
K. Ashok Kumar, K. V. S. Sudheer, K. Pavani, G. D. Umadevi, C. V. C. M. Reddy, B. Sahadeva Reddy
{"title":"Extreme Rainfall Analysis for Development of Rainfall Intensity Duration Frequency Curves for Semiarid Region of Andhra Pradesh in India","authors":"K. Ashok Kumar,&nbsp;K. V. S. Sudheer,&nbsp;K. Pavani,&nbsp;G. D. Umadevi,&nbsp;C. V. C. M. Reddy,&nbsp;B. Sahadeva Reddy","doi":"10.1007/s40009-023-01360-6","DOIUrl":"10.1007/s40009-023-01360-6","url":null,"abstract":"<div><p>In semiarid regions, water being the main constraint, the rainfall intensity–duration–frequency (IDF) curves play a significant role in water resources engineering and management. The IDF curves are used to assess the heavy rainfall events, climatic regimes classification, to derive design storms, etc. The objective of the present study is to develop IDF curves for the Ananthapuramu district in semiarid region of southern India. Annual peak rainfall data of 56 years (1966–2021) at Agricultural Research Station, Ananthapuramu, were analyzed for extraction of peak rain-storm intensity value, their corresponding durations and the frequency using Gumbel distribution method. The short-duration rainfall intensity was estimated using empirical reduction method described by the India Meteorological Department. The parameters of the IDF equation and correlation coefficient for different periods were calculated (2, 5, 10, 25, 50 and 100 years). The results of the data analysis indicated that rainfall intensity decreased with increase in rainfall duration. Further, a rainfall of any given duration will have larger intensity if its return period is large. The most frequent rainfall durations in the study area are 15, 30, and 45 min, and they were found to account for 22.4%, 28.2%, and 32.4%, respectively, of the total daily rainfall, whereas the percentage of the daily rainfall during 1-, 2-, and 3-h storm events was 34.9%, 44.5%, and 50.9%, respectively. By using these relations, short-duration rainfall can be quickly estimated, saving time, money, and other resources. The IDF curves can be recommended for the prediction of rainfall intensity and frequency of return period for Ananthapuramu district in semiarid region of Andhra Pradesh.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"47 4","pages":"395 - 399"},"PeriodicalIF":1.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135271931","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 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
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