omerelsheikh

omerelsheikh

مدرس - عضو هيئة تدريس

كلية العلوم

العنوان: Sohag

1

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: nanoparticles


2020-10-25 13:28:53 الكلمات المفتاحية nanoparticles,
The physical properties of bitumen modified with ilmenite and bentonite nanoparticles
Using nanotechnology in asphalt paving has increased markedly to improve the asphalt characteristics and increase the road life, especially with the significant increase in traffic volumes. The present contribution evaluates the effects of ore nanoparticles namely ilmenite and bentonite on the engineering properties and performance of asphalt binder. The high-resolution transmission electron microscopy (HRTEM) micrograph was used to characterize the ... إقراء المزيد

2019-10-12 13:29:05 الكلمات المفتاحية superparamagnetic materials, Thermal Decomposition, nanoparticles,
A Simple and Reliable Synthesis of Superparamagnetic Magnetite Nanoparticles by Thermal Decomposition of Fe(acac)3
Magnetic nanoparticles have been largely proposed as means of technological tools due to its value in different fields, especially in biomedicine. Herein, we present a robust, highly reproducible and low-cost method to obtain superparamagnetic magnetite nanoparticles (MNP-II) of about 15±5 nm diameter by thermal decomposition of [Fe(acac)3] in a one pot, two steps method. In the first step, magnetite nanoparticles ... إقراء المزيد

2020-03-06 21:54:33 الكلمات المفتاحية nanoparticles, Cancer Remediation,
Opinion on Nanoparticles for Cancer Remediation
Since the innovation of nanomedicine decades ago, significant advances have been made, especially with cancer as an objective. Nanoparticles in cancer remediation intends to cover different important aspects in this field including development of nanocarrier, delivery of gene, intrinsically active nanoparticles (NPs), microenvironment of tumor, toxicity, and immunology. The mostly applied biocompatible nanocarriers in clinical experiments are lipid, polymer, and ... إقراء المزيد

2018-10-31 06:09:40 الكلمات المفتاحية liver, TiO2, nanoparticles, milk thistle,
Ultrastructure, Histochemical and Biochemical effects of Titanium dioxide nanoparticles in Adult male albino rat liver and possible prophylactic effects of Milk thistle seeds
ABSTRACT: Nanotechnology refers to material at the nanometer scale. It has the commercial application of products in the fields of medicine, engineering, manufacturing, information and environmental technology. Titanium dioxide nanoparticles (Tio2 NPs) are manufactured worldwide in large quantities for use in a wide range of applications including pigments, plastics, papers, inks, food colorants, toothpastes and cosmetic manufacturing. Milk thistle is ... إقراء المزيد

2018-10-28 18:15:46 الكلمات المفتاحية electrical properties, imines, , nanoparticles, semiconductor, , sonochemistry,
Sonochemical synthesis, structural inspection and semiconductor behavior of three new nano sized Cu(II), Co(II) and Ni(II) chelates based on tri‐dentate NOO imine ligand as precursors for metal oxides
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

2018-10-21 17:11:46 الكلمات المفتاحية nanoparticles, Nano-Tungsten Oxide, Humidity sensing,
Synthesis and Characterization of Nano-Tungsten Oxide Precipitated onto Natural Inorganic Clay for Humidity-Sensing Applications
wet chemical method was used to obtain tungsten oxide nanoparticles from tungsten tetrachloride and natural microfibrous inorganic clay (sepiolite) as a starting material. Precipitation of tungsten oxide species onto sepiolite under basic conditions and subsequent thermal treatment was investigated, prompted by the abundance of sepiolite in nature and the useful environmental applications that could be attained. Laser granulometry, X-ray diffraction, ... إقراء المزيد

2018-10-10 14:22:18 الكلمات المفتاحية IR, nanoparticles, Schiff-Base Complexes, Nanosized Ni/Cu, Benzyl alcohol, Sonochemical, thermal analysis, benzaldehyde,
Catalytic Oxidation of Benzyl Alcohol using Nanosized Ni/Cu  Schiff-Base Complexes and their Metal Oxides Nanoparticles
Three novel nanosized Cu and Ni Schiff-base complexes (ahpvCu, ahpnbCu, and ahpvNi) incorporating imine ligands derived from the condensation of 2-amino-3-hydroxypyridine with either 3-methoxysalicylaldehyde or 4-nitrobenzaldehyde were synthesized by a sonochemical approach. The structure of the ligands and their complexes was confirmed by IR, NMR spectroscopy, electronic spectra, elemental analysis, TGA, molar conductivity, and magnetic moment analyses. The results revealed ... إقراء المزيد

2018-10-05 13:22:55 الكلمات المفتاحية thermal oxidation, nanoparticles, Optical ,
The disclosed transformation of pre-sputtered Ti films into nanoparticles via controlled thermal oxidation
Nanoparticles of TiO2 were successfully prepared from pre-sputtered Ti films using the controlled thermal oxidation. The effect of oxidation temperature on structural, morphological and optical properties in addition to photocatalysis activity of the sputtered films was tested and explained. Analysis of XRD and EDAX elucidated the enhancement in crystallization and oxygen content with the increase of oxidation temperature. SEM depicted ... إقراء المزيد

2018-10-05 13:23:42 الكلمات المفتاحية EDAX, Steel slag, magnetite, akaganéite, nanoparticles, TEM, SEM, XRD,
Steel slag as a raw material for preparing magnetite and akaganéite nanoparticles
More than 400 million tons of iron and steel slag is produced each year in the world. Most of the steel slag is recycled in the developed countries, mainly for use as construction aggregate, however excess steel slag is usually sent to landfills for disposal. Slag dumping can have an impact on the environment due to the release of harmful ... إقراء المزيد

2018-10-01 14:02:38 الكلمات المفتاحية Pharmaceutical, Oxides, nanoparticles, Imine complexes, TGA,
Pharmaceutical Applications of Nano Imine Complexes and Their Oxides
Some new nano-sized Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Cd(II), Zn(II),, Pb(II) and Ag(I) complexes with imine ligands derived from 2-amino-3-hydroxypyridine (ahp) and 3-methoxysalicylaldehyde (v) or 4-nitrobenzaldehyde (nb) were prepared by sonochemical method. Melting point, decomposition temperature, infrared (IR) and NMR spectra, elemental analyses, conductance and magnetic susceptibility measurements, TG and UV – Visible spectrophotometric studies were utilized in characterizing of ... إقراء المزيد