naglaa_abdallah

Naglaa Youssef Abdallah

مدرس - Lecturer

كلية العلوم

العنوان: جامعه سوهاج - كليه العلوم- قسم النبات والميكروبيولوجى

1

إعجاب
6 1 2 18 4 3 294 179
100

أضيف حديثا
  • المقررات الدراسية 6
  • ملحقات المقررات الدراسية 1
  • واجبات المقررات الدراسية 2
  • المنشورات و المؤلفات 18
  • ساعات مكتبية 4
  • الاعلانات 3
  • عدد الملفات المرفوعه 1
  • كل التنزيلات 4

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: semiconductor

A DPL model of photo-thermal interaction in an infinite semiconductor material containing a spherical hole

2018-10-13 22:34:41 الكلمات المفتاحية semiconductor, Thermoelasticity, spherical cavity, DPL model,
A DPL model of photo-thermal interaction in an infinite semiconductor material containing a spherical hole
The dual phase lag (DPL) heat transfer model is applied to study the photo-thermal interaction in an infinite semiconductor medium containing a spherical hole. The inner surface of the cavity was traction free and loaded thermally by pulse heat flux. By using the eigenvalue approach methodology and Laplace’s transform, the physical variable solutions are obtained analytically. The numerical computations for ... إقراء المزيد

A generalized model on plasma, thermal and elastic waves in a semiconductor medium

2018-10-12 12:23:32 الكلمات المفتاحية plasma, elastic waves, semiconductor,
A generalized model on plasma, thermal and elastic waves in a semiconductor medium
In this work, a generalized model on plasma, thermal and elastic waves was used to study the wave propagation of semiconducting material during the photo-thermal process. The thermal relaxation time, the coupling between the plasma, thermal, and elastic waves has been considered. The analytical solutions in the transformed domain by the eigenvalue approach have been obtained based on the techniques ... إقراء المزيد

A study on photothermal waves in an unbounded semiconductor medium with cylindrical cavity

2018-10-06 21:26:58 الكلمات المفتاحية ylindrical cavity, semiconductor, photothermal waves,
A study on photothermal waves in an unbounded semiconductor medium with cylindrical cavity
The theory of coupled plasma, thermal, and elastic waves was used to investigate the wave propagation on semiconductor material with cylindrical cavity during photo-thermoelastic process. An unbounded material, elastic semiconductor containing a cylindrical cavity with isotropic and homogeneous thermal and elastic properties has been considered. The inner surface of cavity is constrained, and the carrier density is photogenerated by an ... إقراء المزيد

A dual phase lag model on photothermal interaction in an unbounded semiconductor medium with cylindrical cavity

2018-10-06 09:30:09 الكلمات المفتاحية photothermal waves, dual phase lag model, semiconductor,
A dual phase lag model on photothermal interaction in an unbounded semiconductor medium with cylindrical cavity
In the present paper, the theory of generalized photo-thermoelasticity under dual phase lag model has been applied to study the coupled thermal, plasma and elastic waves on unbounded semiconductor medium with cylindrical cavity. The bounding surface of the cavity is traction free and loaded thermally by exponentially decaying pulse boundary heat flux. By using Laplace transform and the eigenvalue approach ... إقراء المزيد

A study on photothermal waves in a semiconductor material photogenerated by a focused laser beam

2018-10-06 07:46:31 الكلمات المفتاحية focused laser beam, photothermal waves, semiconductor,
A study on photothermal waves in a semiconductor material photogenerated by a focused laser beam
In this work, the theory of coupled plasma, thermal and elastic waves were used to investigate the wave propagation on semiconductor material during photo-thermo-elastic process. A thin slim strip (TSS) medium, elastic semiconductor with isotropic and homogeneous thermal and elastic properties have been considered. The plasma, thermal and elastic waves in a TSS photo generated by a focused and intensity ... إقراء المزيد

Analytical Solutions of Plasma and Thermoelastic Waves Photogenerated by a Focused Laser Beam in a Semiconductor Material

2018-10-14 10:22:56 الكلمات المفتاحية semiconductor, Thermoelastic Waves, Analytical solutions, plasma,
Analytical Solutions of Plasma and Thermoelastic Waves Photogenerated by a Focused Laser Beam in a Semiconductor Material
In the present work, the coupled plasma theory (thermally and elasticity waves) was used to study the wave propagation of semiconducting sample through photothermal process. The coupled of the plasma, thermally, and elastic waves that photo-generated through intensity modulated laser beam and tightly focused has been considered to study an elastic homogeneous semiconducting medium with isotropic thermo-elastic properties. Laplace transformations ... إقراء المزيد

Analytical solutions of photo-thermo-elastic waves in a non-homogenous semiconducting material

2018-10-13 22:49:25 الكلمات المفتاحية photo-thermo-elastic, Analytical solutions, non-homogenous, semiconductor,
Analytical solutions of photo-thermo-elastic waves in a non-homogenous semiconducting material
In the present paper, the wave propagation on non-homogenous semiconductor through photo-thermal process has been studied by using the theory of coupled plasma and thermoelastic wave. Without neglecting the coupling between the plasma and thermoelastic wave that photo-generated through intensity modulated laser beam and tightly focused, a semiconducting isotropic elastic medium has non-homogeneity in thermal and elastic properties are considered. ... إقراء المزيد

Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates

2018-09-04 06:23:45 الكلمات المفتاحية Cu(II) chelates, Ni(II), NMR, TGA, Chelates, electrical properties, imines, nanoparticles, semiconductor, sonochemistry, thermal analyses, IR, TEM, XRD,
Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates
Three novel nanosized Cu(II), Co(II) and Ni(II) complexes of imine ligand attained from the condensation of 2‐amino‐3‐hydroxypyridine and 3‐methoxysalicylaldehyde have been prepared and investigated using diverse chemical methods such as NMR, CHN analysis, conductance, IR, Spectral studies, TGA and magnetic moment measurements. The obtained data confirmed that the synthesized complexes have metal: ligand ratio of 1:1 and octahedral geometry for ... إقراء المزيد

Electric, Thermoelectric and Magnetic Properties of Nickel(II) Imine Nanocomplexes

2018-09-03 15:00:43 الكلمات المفتاحية TEM, TGA, Ni-Schiff base complexes, electric, thermoelectric, Magnetic, Nanostructures, IR, semiconductor,
Electric, Thermoelectric and Magnetic Properties of Nickel(II) Imine Nanocomplexes
Production of novel organic semiconductor nanomaterials is essential for enabling the development of personal, portable and flexible electronic modules. This work presents Ni(II)-Schiff base complexes with enhanced Seebeck coefficient and weak ferromagnetic ordering for thermoelectric and magnetic devices. Four Ni(II)-Schiff base complexes (namely [Ni(C12">1212H10">1010N3O4Br)]⋅">⋅⋅2H2O, [Ni(C16">1616H11">1111N3O4)">4)4)]⋅">⋅⋅2H2O, [Ni(C21">2121H14">1414N5O8Br)] and [Ni(C25">2525H17">1717N5O8)">8)8)]⋅1/2">⋅1/2⋅1/2H2O) have been synthesized in nanosized dimensions. The electrical and thermoelectric properties have ... إقراء المزيد