Indian Journal of Pure & Applied Physics最新文献

Variability of Carbonaceous Aerosols in Two Distinct Climatic Zones of the North-Western-Himalaya (India): An Expedition During Summer 2022 喜马拉雅西北部（印度）两个不同气候带碳质气溶胶的变率：2022年夏季的一次考察

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2025-03-01 DOI: 10.56042/ijpap.v63i3.15681

Imtiaz Ahmed, Sumit Kumar Mishra, Rishabh Singh, Vikas Goel, Padma, Konika Sharma, Mayank Kumar, Vijay Kumar Soni, Sonam Lotus, Shweta Yadav

{"title":"Variability of Carbonaceous Aerosols in Two Distinct Climatic Zones of the North-Western-Himalaya (India): An Expedition During Summer 2022","authors":"Imtiaz Ahmed, Sumit Kumar Mishra, Rishabh Singh, Vikas Goel, Padma, Konika Sharma, Mayank Kumar, Vijay Kumar Soni, Sonam Lotus, Shweta Yadav","doi":"10.56042/ijpap.v63i3.15681","DOIUrl":"https://doi.org/10.56042/ijpap.v63i3.15681","url":null,"abstract":"The Northwestern Himalayas include two climatic zones: the temperate Kashmir Valley (KV) and the cold desert of Ladakh (LD), both hosting glaciers that sustain major Indo-Pak rivers. Carbonaceous aerosols (CA), key contributors to aerosol emissions, impact regional climate directly and indirectly. This study collected aerosol samples from four KV sites—Srinagar (SG), Qazigund (QZ), Pahalgam (PH), and Gulmarg (GM)—and two LD sites—Leh (LH) and Kargil (KG)—alongside real-time Black Carbon (BC) measurements during June-July 2022. Average BC concentrations were recorded as 6.36, 6.18, 6.10, 3.77, 1.10, and 0.94 µg/m’ over GM, QZ, SG, PH, LH, and KG, respectively, with peaks observed at SG and PH in the morning and evening, while GM had an evening peak. KG and LH, the Cold Desert LD sites, have very weak BC concentration variation from morning to evening. BC source apportionment shows fossil fuel contributions of 81-94% in KV and 82-87% in LD, with biomass burning contributing 6-19% in KV and 13-18% in LD. KV’s bowl-shaped topography and higher anthropogenic activities increase fossil fuel BC, unlike LD’s open topography and windy conditions. An inverse relationship was observed between wind speed (WS) and BC concentration, while rainfall showed a weaker correlation. BC was negatively correlated with relative humidity (RH) in SG and GM, whereas PH and KG showed weak RH correlations, and LH showed a positive RH-BC relationship. OC/EC ratios indicate biomass burning as the primary CA source, with OC/EC increasing with altitude. Back-trajectory analysis identified regional and local winds blowing in KV and Indo-Gangetic Plain (IGP) as the primary wind source over KG and LH, with elevated BC levels linked to local winds over KV and when wind paths moved from KV in LD.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":"63 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://or.niscpr.res.in/index.php/IJPAP/article/download/15681/4200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Different Morphological Features of Sulphidation Induced MoG Solid Spheres and Phase Mixing in Ball-in-Ball MoS2 Heterostuctures 硫化诱导MoG固体球的不同形态特征及球中MoS2异质结构的相混合

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2024-01-01 DOI: 10.56042/ijpap.v62i7.7027

Angom Devadatta Mani

引用次数: 0

Suitability of LBSO/CuI as an Effective ETL/HTL for Perovskite Solar Cells: A Dry Lab Approach LBSO/CuI作为钙钛矿太阳能电池有效ETL/HTL的适用性:干法实验室方法

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.2441

引用次数: 0

To Study the Impact of Mn Doping on Structural, Morphological and Optical Properties of Zinc Sulfide 研究锰掺杂对硫化锌结构、形貌和光学性能的影响

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3490

引用次数: 0

Study of Electrical Properties of Lead-free BCZT Ceramic (Ba0.80Ca0.20Zr0.1Ti0.9)O3 at Different Sintering Temperatures 不同烧结温度下无铅BCZT陶瓷(Ba0.80Ca0.20Zr0.1Ti0.9)O3的电学性能研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3388

{"title":"Study of Electrical Properties of Lead-free BCZT Ceramic (Ba0.80Ca0.20Zr0.1Ti0.9)O3 at Different Sintering Temperatures","authors":"","doi":"10.56042/ijpap.v61i9.3388","DOIUrl":"https://doi.org/10.56042/ijpap.v61i9.3388","url":null,"abstract":"There is a tremendous growth in the demand for high performance lead-free ceramics due to environmental issues. In the present work, the traditional solid-state sintering technique at different sintering temperatures, namely, 1380, 1400 and 1420 oC has been employed to prepare lead-free (Ba0.80Ca0.20Zr0.1Ti0.9)O3 ceramics. Detailed XRD analysis suggests pure perovskite structure for the ceramic synthesized at higher sintering temperature 1420 oC without any impurities. Density measurement using Archimedes principle shows a trend of increased densification with increasing sintering temperature. Room temperature frequency dependent dielectric constant study indicates high value of dielectric constant (εrt= 2665-2490) in the frequency range100 Hz-100 kHz for the ceramic sintered at 1420 oC. Temperature dependent dielectric studies at constant frequency (10 kHz) indicates that ceramic prepared at 1420 oC has high Curie temperature Tc =77 oC. Ferroelectric properties of the ceramics are enhanced by raising the sintering temperature from 1380 to 1420 oC with higher spontaneous polarisation of Ps = 7.68 μC/cm2 corresponding to 1420 oC ceramic. The reasonably high values of Curie temperature, room temperature dielectric constant in the large frequency range and improved ferroelectric properties of the ceramic prepared at 1420 oC indicate that this ceramic can be a good candidate for being developed into commercially viable lead-free ferroelectric material.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pressure Induced Surface States and Wannier Charge Centers in Ytterbium Monoarsenide 单砷化镱的压力诱导表面态和万尼尔电荷中心

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3148

引用次数: 0

Study on Structural and Dielectric Properties of (Ti, Cr) co-doped SnO2 Nanoparticles (Ti, Cr)共掺杂SnO2纳米颗粒结构和介电性能研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.3463

{"title":"Study on Structural and Dielectric Properties of (Ti, Cr) co-doped SnO2 Nanoparticles","authors":"","doi":"10.56042/ijpap.v61i11.3463","DOIUrl":"https://doi.org/10.56042/ijpap.v61i11.3463","url":null,"abstract":"The present study deals with the impact of (Ti, Cr) co-doping on the structural, optical, and dielectric properties of the SnO2 nanoparticles. The traditional solid-state reaction route is adopted to prepare undoped, Ti-doped and (Ti, Cr) co-doped SnO2 nanoparticles. The structural analysis revealed the polycrystalline nature with a single phase of tetragonal rutile type structure for all the prepared samples. The increment in the crystallite size is observed with doping. The Scanning electron microscopy showed that the nanoparticles are spherical and uniformly distributed. A small variation is noticed in the optical band gap energy of doped samples as compared to the undoped SnO2. The significant changes have been reported in parameters such as dielectric function, capacitance, dielectric loss factor, and AC conductivity. Maxwell-Wagner model is suitable to illustrate the decreasing behaviour of dielectric constant and dielectric loss with frequency. Ti and Cr co-doped SnO2 nanoparticles revealed lower dielectric loss contrary to Ti-doped and undoped SnO2 nanoparticles. The ac conductivity of all the prepared samples increases with frequency and doping. Ti-doped SnO2 nanoparticles exhibited higher ac conductivity, which can be explained by the hopping of charge carriers.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136305027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural Radionuclides in Surface Soil and Quantification of Associated Radiological Hazards in Fatehabad and Hisar districts, Haryana, India 印度哈里亚纳邦Fatehabad和Hisar地区表层土壤中的天然放射性核素和相关辐射危害的量化

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.3115

{"title":"Natural Radionuclides in Surface Soil and Quantification of Associated Radiological Hazards in Fatehabad and Hisar districts, Haryana, India","authors":"","doi":"10.56042/ijpap.v61i11.3115","DOIUrl":"https://doi.org/10.56042/ijpap.v61i11.3115","url":null,"abstract":"Elevated levels of primordial radionuclides (238U/ 232Th- decay series and 40 K) are the foremost source of higher background radiations. Natural radioactive elements may prove precariously radioactive in some situations. So, it is essential to quantify the natural levels of radioactivity in the soil to figure out how much the population is exposed to, what the health risks are, and have a starting point for figuring out how radioactivity in the environment will change due to human activities. In this study natural radioactivity in the soil of different residential areas of Fatehabad and Hisar districts in Haryana, India has been quantified. HPGe gamma spectrometry has been used to quantify the activity of 226Ra, 232Th, and 40K in the soil of the area under investigation. The respective activity concentration of 226Ra, 232Th, and 40K ranged 32 to 53 Bq kg−1, 23 to 41 Bq kg−1, and 402 to 610 Bq kg−1. The activity equivalent to radium only (Raeq), the air absorbed dose rate (AAD), the effective dose equivalent rate(AEDEC), the gonadal dose equivalent rate (AGDE), the external risk index, the internal risk index, the index for gamma level, cancer risk for an average lifetime, etc. were calculated and compared with the international standards. Each sample of soil had lesser radium equivalent activities than the permissible limit, i.e., 370 Bq kg-1primarily set by the Organisation for Economic Co-operation and Development (OECD), and the effective dose equivalent was below the safe limit of 1.0 mSv y-1. Organ-specific dose values are pretty considerable but not in the danger zone. The Clark value refuses the probability of finding any uranium ore. This study indicates that the area being studied is a place with low background radiation exposure from radionuclides.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136305234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Two-step Method to Grow ZnSe Thin Films and To Study their Characteristics 两步法生长ZnSe薄膜及其特性研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3209

引用次数: 0

Identification of Potential Dipeptide Inhibitors for PfENR Enzyme in Fatty Acid Biosynthesis Pathway II: A Computational Study for Developing Novel Antimalarials 脂肪酸生物合成途径中PfENR酶潜在二肽抑制剂的鉴定:开发新型抗疟药物的计算研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3064

{"title":"Identification of Potential Dipeptide Inhibitors for PfENR Enzyme in Fatty Acid Biosynthesis Pathway II: A Computational Study for Developing Novel Antimalarials","authors":"","doi":"10.56042/ijpap.v61i9.3064","DOIUrl":"https://doi.org/10.56042/ijpap.v61i9.3064","url":null,"abstract":"Malaria is a life-threatening disease caused by parasites of the genus Plasmodium that are transmitted through the bite of infected female Anopheles mosquitoes. The essential role of fatty acids in the malarial parasite's liver and blood stages makes it a promising target for combating P. falciparum. However, the emergence of strains of the malarial parasite has limited the efficacy of currently available drugs against malaria. Therefore, there is an urgent need to develop new drugs that can target the parasite and overcome drug resistance. This study aimed to identify potential dipeptide inhibitors for the PfENR enzyme using in-silico methods. Virtual screening was performed using thelibrary of 400 dipeptides to identify lead dipeptides with an affinity towards PfENR. We observed dipeptides Trp-Trp, Trp-Phe, Trp-Tyr, Tyr-Phe are showing the best affinity against PfENR. Density Functional Theory (DFT) analysis was used to reveal the electronic structure and reactivity of the top dipeptides by calculating the HOMO-LUMO gap. Additionally, we assessed the pharmacokinetic and other relevant properties of the lead dipeptides. All the lead dipeptides followed Lipinski's rule of five (Ro5). Our findings suggest that the identified dipeptides have significant potential as inhibitors of PfENR and could lead to the development of a novel class of antimalarial drugs. This research provides valuable insights into developing effective drugs to combat malaria.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":"270 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0