Volume-13 , Issue-1 , Feb 2025, ISSN 2348-3423 (Online)

• Open Access   Article

  Dynamical Structure Factors of an Alkali Metal: Liquid Rubidium

  Grima Dhingra

  Research Paper | Journal-Paper (IJSRPAS)

  Vol.13 , Issue.1 , pp.1-6, Feb-2025

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  Abstract
  Theoretical calculations for the coherent dynamical structure factors of an alkali metal, liquid rubidium (85Rb) at a temperature of 338 K, fairly above the melting temperature of liquid metal and corresponds to a mass density of 1.45 g/cm³. Are reported. Melting temperature of rubidium is 312.45K, and at the considered temperature of 338 K, the liquid system is 0.945 times rarer as compared to that at room temperature. Theoretical results are provided for a wave-vector range of 0.2 Å?¹ to 5.0 Å?¹. The wave-vector range corresponds up to the primary and secondary maxima positions in the structure factor of liquid at the considered physical conditions of temperature and density. The modified microscopic theory of collective dynamics in simple liquids is applied for the present computations. The theory turns out to be a self-consistent approach and produces the equilibrium dynamics of a liquid with the acquaintance of the inter-particle interaction. Along with the dynamical structure factor, other dynamical properties; diffusion coefficient the dispersion relation and sound velocity liquid rubidium under these conditions, have also been reported.

  Key-Words / Index Term
  Dynamical structure factor, Alkali metal, Inter-particle interaction potential, Diffusion coefficient; Modified microscopic theory

  References
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  Citation
  Grima Dhingra, "Dynamical Structure Factors of an Alkali Metal: Liquid Rubidium," International Journal of Scientific Research in Physics and Applied Sciences, Vol.13, Issue.1, pp.1-6, 2025

• Open Access   Article

  Synthesis, Characterization and Antimicrobial Properties of Manganese Doped Zinc Sulphide Nanoparticles

  Janmejay Yadav, Vikram Singh, Ram Kripal, Rajesh Kumar Yadav, Urvashi Srivatava

  Research Paper | Journal-Paper (IJSRPAS)

  Vol.13 , Issue.1 , pp.7-15, Feb-2025

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  This paper focuses on the controlled size of manganese-doped zinc sulfide nanocrystalline powders made via an easy-to-understand aqueous chemical procedure that eliminates the requirement for a capping agent. It was examined by the size of the ZnS nanoparticles was exaggerated by varying calcination temperatures. Rendering to W-H analysis, ZnS nanoparticles` average crystallite size rose as the calcination temperature rose Spectroscopy of UV-vis in diffused reflectance (DR) mode was employed to analyze optical properties, It demonstrated a notable reflective feature at 420 nm at 500 ?C calcination temperature and a sharp rise in reflectivity at 375 nm. Morphology and elemental compositions were investigated via transmission electron microscopy (TEM) and scanning electron microscopy (SEM). As the calcination temperature was elevated, ZnS nanoparticles` average crystallite size grew in accordance with Scherrer`s formula and W-H analysis. UV–vis spectroscopy in diffused reflectance (DR) mode was employed to analyze optical properties, which, at 500 ?C calcination temperature, had a notable reflective characteristic after 420 nm and a sharp rise in reflectivity at 375 nm. In comparison with pure ZnS NPs, Mn-doped ZnS (15 mol%) NPs shown greater antibacterial activity against Shigellaflexneri, Salmonella typhi, E. coli, and Staphylococusaureus.

  Key-Words / Index Term
  Mn-doped nanoparticles, zinc sulfide, Scherrer`s equation, Transmission electron microscopy, Antibacterial activity, nanoparticles

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  Citation
  Janmejay Yadav, Vikram Singh, Ram Kripal, Rajesh Kumar Yadav, Urvashi Srivatava, "Synthesis, Characterization and Antimicrobial Properties of Manganese Doped Zinc Sulphide Nanoparticles," International Journal of Scientific Research in Physics and Applied Sciences, Vol.13, Issue.1, pp.7-15, 2025

• Open Access   Article

  Identification of Common Urological Disorders and Radiation Dose Assessment among the Patients Attending Intravenous Urographic X-Ray Procedure in Kebbi State

  Buhari Samaila, Buhari Maidamma, Rilwanu Mohammed Danyaro

  Research Paper | Journal-Paper (IJSRPAS)

  Vol.13 , Issue.1 , pp.16-24, Feb-2025

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  Abstract
  The increasing use of Intravenous Urography (IVU) for diagnostic imaging has led to an investigation of patient-specific factors influencing procedural parameters and radiation exposure. This study identified urological disorders and assessed radiation doses among 400 patients undergoing IVU in Kebbi State, Nigeria. Data were processed using caldose-X-5.0 and SPSS. Demographic analysis showed that male patients (mean age: 36.89 years) were younger than females (mean age: 41.26 years), with males having lower average weight and height. Procedural findings indicated that females received slightly more contrast media (52.65 ml vs. 49.47 ml) and had shorter imaging times (57.80 s vs. 66.21 s). The number of images taken was comparable, with males averaging 6.99 and females 6.68. Clinical results revealed gender-based disease distribution: males predominantly had kidney stones and hydronephrosis, while females exhibited more gynecological conditions like uterine fibroids and left flank pain. Disease prevalence varied by hospital, with kidney stones most common at Sir Yahaya Memorial Hospital, uterine fibroids at Federal University Teaching Hospital, and bladder disorders at General Hospital Yauri. Radiation exposure analysis showed variations in BMI, Entrance Skin Dose (ESD), and Dose Area Product (DAP). FUTH recorded the highest mean BMI (24.64 kg/m²) and radiation doses (ESD: 2.80 mGy, ED: 1.32 mSv, DAP: 2143.00 Gy·cm²), suggesting less protocol optimization. SYHM had the lowest radiation exposure, likely due to better safety measures. These findings highlight the need for gender-specific diagnostic strategies and improved radiation optimization.

  Key-Words / Index Term
  Imaging Time, Radiation Dose, Entrance Skin Dose, Dose Area Product, Effective Dose, Body Mass Index (BMI), Urological Disorders and Kebbi

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  Citation
  Buhari Samaila, Buhari Maidamma, Rilwanu Mohammed Danyaro, "Identification of Common Urological Disorders and Radiation Dose Assessment among the Patients Attending Intravenous Urographic X-Ray Procedure in Kebbi State," International Journal of Scientific Research in Physics and Applied Sciences, Vol.13, Issue.1, pp.16-24, 2025

• Open Access   Article

  Analytical Analysis of Convection in Rotatory Walters B´ Viscoelastic Fluid in Presence of Magnetic Field

  Pardeep Kumar

  Research Paper | Journal-Paper (IJSRPAS)

  Vol.13 , Issue.1 , pp.25-30, Feb-2025

  Abstract

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  Citation

  Abstract
  An attempt has been made to investigate the effects of uniform vertical magnetic field and uniform rotation on thermal convection in Walters B` viscoelastic fluid. Following the linearized stability theory, Boussinesq approximation and normal mode analysis, the dispersion relation is obtained. In the scenario of stationary convection, Walters B` viscoelastic fluid behaves like a Newtonian Fluid. Further, it is found that rotation has a stabilizing effect whereas the magnetic field has both stabilizing and destabilizing effects. In addition to this, it has been discovered that the system is reliable for g??/???(1-2?_r F) (27?^4)/4 and under the conditions g??/??>(1-2?_r F) (27?^4)/4 and 0??_r?1/2F the system goes into an unstable state. Overstability has also been looked at from the perspective of a scenario in which sufficient circumstances are met to rule out the possibility of the phenomenon occurring. It has been discovered that the rotation, magnetic field and viscoelasticity introduce oscillatory modes in the system which were non-existent in their absence.

  Key-Words / Index Term
  Thermal Convection; Walters B` Viscoelastic Fluid; Uniform Vertical Magnetic Field; Uniform Rotation; Linear Stability Theory; Normal Mode Analysis method

  References
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  Citation
  Pardeep Kumar, "Analytical Analysis of Convection in Rotatory Walters B´ Viscoelastic Fluid in Presence of Magnetic Field," International Journal of Scientific Research in Physics and Applied Sciences, Vol.13, Issue.1, pp.25-30, 2025