Indian Journal of Pure & Applied Physics最新文献_第3页

Unsteady MHD CNTs-blood Nanofluid Flow and Heat Transfer under the Effects of Viscous Dissipation, Resistive heating, and Thermal Radiation over a Sensor Surface Accompanied by Variable Viscosity 非定常MHD碳纳米管-血液纳米流体在粘性耗散、电阻加热和热辐射影响下的流动和传热

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i10.3592

{"title":"Unsteady MHD CNTs-blood Nanofluid Flow and Heat Transfer under the Effects of Viscous Dissipation, Resistive heating, and Thermal Radiation over a Sensor Surface Accompanied by Variable Viscosity","authors":"","doi":"10.56042/ijpap.v61i10.3592","DOIUrl":"https://doi.org/10.56042/ijpap.v61i10.3592","url":null,"abstract":"The numerical scrutiny of unsteady incompressible magneto-hydrodynamics (MHD) for blood flow in carbon nano tubes (CNTs), past a sensor surface has been presented under the influences of viscous dissipation, resistive heating, and thermal radiation. The variables without having dimensions have been deployed to alter the reigning flow equations, which are non-linear, coupled partial differential equations (PDEs), into the system of non-linear coupled ordinary differential equations (ODEs). The bvp4c tool of MATLAB software has been exercised to obtain the numerical solutions of the dimensionless governing system. The graphs and tables have been formed for the SWCNT-blood and MWCNT-blood nano-liquids for the velocity and temperature profiles versus the unsteadiness parameter, magnetic parameter, magnetic field inclination angle, radiation parameter, and Eckert number. It has been observed that the velocity profile of MWCNT-blood nanofluid is higher than the velocity profile of SWCNT-blood nanofluid except for radiation parameter and Eckert number. However, a reverse trend has been noted for temperature profiles for both nanofluids for all other governing parameters. The comparison tables, for the values of the local skin friction factor and the local Nusselt number, for the various governing parameters, match with outcomes of the previously reported data and validate the employed technique for the solution.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494881","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

Synthetization and Characterization of Mo-doped Mn4Si7 by High Energy Ball Mill 高能球磨法制备掺钼Mn4Si7及表征

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3491

引用次数: 1

Experimental and Theoretical Characterization of the Crystal Structure of 4,4-dimethoxy-1,1-biphenyl (4-DMB) 4,4-二甲氧基-1,1-联苯(4- dmb)晶体结构的实验与理论表征

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3099

引用次数: 0

Effects of Chromium (Cr) doping on Structural, Electronic and Magnetic Properties of Barium Selenide Compound: A Theoretical Investigation 铬(Cr)掺杂对硒化钡化合物结构、电子和磁性能影响的理论研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3507

引用次数: 0

Investigating Adsorption Behaviour of Cobalt Vanadate Nanocomposites on Methylene Blue Dye 钒酸钴纳米复合材料在亚甲基蓝染料上的吸附行为研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3521

引用次数: 0

Electronic Spectroscopic Study of Stability of L-Ascorbic Acid (Vitamin C) in Aqueous Solutions of Salts (NaHCO3, NaCl, and KCl) l -抗坏血酸(维生素C)在盐(NaHCO3、NaCl和KCl)水溶液中稳定性的电子光谱研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3486

{"title":"Electronic Spectroscopic Study of Stability of L-Ascorbic Acid (Vitamin C) in Aqueous Solutions of Salts (NaHCO3, NaCl, and KCl)","authors":"","doi":"10.56042/ijpap.v61i9.3486","DOIUrl":"https://doi.org/10.56042/ijpap.v61i9.3486","url":null,"abstract":"Ascorbic acid commonly known as Vitamin C, is a water-soluble anti-oxidant that is essential for the growth, development, and repair of tissues. The stability of this molecule can be affected by several factors, including pH, temperature, and other factors. We aim to study the stability of ascorbic acid in presence of common food additive and ions such as Na+, K+, Cl-, and HCO3- that are naturally present in human body via spectroscopic measurement. Physiological concentration of sodium, potassium and chloride ions has no influence on the stability. When ascorbic acid was added to a 0.175 MHCO3- aqueous solution, a strong peak was detected at 265.0 nm due to the presence of ascorbate anion. However, within 75 minutes, this peak disappeared completely, indicating significant decomposition. At a lower, physiological 0.035 M concentration of HCO3- , the peak persisted at 265.0 nm, and the rate of decomposition was slower. Our findings suggest that the elevated levels of HCO3- in serum plasma would rapidly decompose ascorbic acid, underscoring the importance of maintaining proper physiological balance in vivo.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496260","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

Small-field Dosimetry of 6- and 10-MV Flattening Filter-free and Flattening Filter Photon Beams for Therapeutic Use 治疗用6 mv和10 mv无压扁滤波和压扁滤波光子束的小场剂量测定

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i10.2827

{"title":"Small-field Dosimetry of 6- and 10-MV Flattening Filter-free and Flattening Filter Photon Beams for Therapeutic Use","authors":"","doi":"10.56042/ijpap.v61i10.2827","DOIUrl":"https://doi.org/10.56042/ijpap.v61i10.2827","url":null,"abstract":"This investigation aimed to measure and commission small unflat photon beams using the detectors described in our previous study10. Furthermore, the dosimetric parameters of small-field unflat and flat photon beams were compared to provide a better interpretation of beam energy and spectrum. The TrueBeam linear accelerator (TrueBeam LINAC, Varian Medical Systems) was employed in this study. The 10 and 6 MV unflat and flat photon beams were used to measure the output factor, depth dose, and beam profile of small-fields ranging in size from 1 cm × 1 cm to 6 cm × 6 cm. All measurements were performed according to the TRS-483 protocols established by the International Atomic Energy Agency. For both 10 and 6 MV, the output factors in unflat beam were significantly higher than in flat beam. The study found that unflat beam penumbras were slightly smaller than flat beam penumbras for both photon energies, which may improve tumor conformity and reduce doses to normal organs. The unflat photon beams had higher suface doses and lower depth doses at 10 cm than the flat photon beams for both energies, leading to considerably more beam energy degradation for unflat beams. The findings of this work are consistent with previously published data, and they will be useful for future research and LINAC commissioning.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494882","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

DFT Study of Hexagonal Boron Nitride Electronic Properties Using Different Types of Exchange Correlation Functionals 利用不同类型的交换相关泛函研究六方氮化硼的电子性质

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i10.2805

{"title":"DFT Study of Hexagonal Boron Nitride Electronic Properties Using Different Types of Exchange Correlation Functionals","authors":"","doi":"10.56042/ijpap.v61i10.2805","DOIUrl":"https://doi.org/10.56042/ijpap.v61i10.2805","url":null,"abstract":"Density functional theory (DFT) description of electronic structure and related properties offer significant accuracy with low cost. Unfortunately, most of these calculations based on LDA and GGA Exchange-Correlation (XC) functionals are underestimating the energy band gap. Hybrid functionals seem promising candidates for band gap values enhancement. Hexagonal Boron Nitride (h-BN) is one of the important members of the graphene-like two-dimensional honeycomb structure family which is of great importance both for science and technology. Experimentally, there is convincing evidence for an indirect wide bandgap of about 6 eV. We present in this work a systematic DFT study using different types of Exchange-Correlation (XC) functionals to find out their accuracy to estimate the h-BN band gap along with its band structure and density of states. We tested five types of different functionals to study the band structure and density of states of a single-layer h-BN. Small differences have been noticed regarding band structure and density of state details. Nevertheless, HSE03 deduced the band gap accurately within a 3.4% deviation from the experimental value compared with LDA which showed a 24.4% error.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494884","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 Study of Radon Concentration in Drinking Water of Lolab valley, Kashmir Himalaya 克什米尔-喜马拉雅罗拉布山谷饮用水氡浓度研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i6.2433

引用次数: 1

Self-Focusing and Defocusing of Lorentz-Gauss Laser Beam in Collisionless Plasma 洛伦兹-高斯激光束在无碰撞等离子体中的自聚焦和离焦

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.2450

引用次数: 0