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Synthesis and spectroscopic structural investigations of the charge-transfer complexes formed in the reaction of 2,6-diaminopyridine with π-acceptors TCNE, chloranil, and DDQ
(
Elsevier
, 2007 , Article)
Molecular charge-transfer complexes of the donor 2,6-diaminopyridine (2,6-DAPY) with π-acceptors tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) and tetrachloro-p-benzoquinone(chloranil) were studied ...
An adaptive Monte Carlo integration algorithm with general division approach
(
Elsevier
, 2007 , Article)
We propose an adaptive Monte Carlo algorithm for estimating multidimensional integrals over a hyper-rectangular region. The algorithm uses iteratively the idea of separating the domain of integration into 2ssubregions. The ...
The multistage homotopy-perturbation method: A powerful scheme for handling the Lorenz system
(
Elsevier
, 2007 , Article)
In this paper, a new reliable algorithm based on an adaptation of the standard homotopy-perturbation method (HPM) is presented. The HPM is treated as an algorithm in a sequence of intervals (i.e. time step) for finding ...
On multistage ranked set sampling for distribution and median estimation
(
Elsevier B.V.
, 2007 , Article)
A variation of ranked set sampling (RSS), multistage RSS (MSRSS), is investigated for the estimation of the distribution function and some of its quantiles, in particular the median. It is shown that this method is ...
Alternative method of diffraction-enhanced imaging
(
Elsevier B.V.
, 2007 , Article)
Diffraction-enhanced imaging (DEI) is a radiographic technique that derives contrast from an object's X-ray absorption, refraction gradient and small-angle scatter properties (extinction). The DEI imaging system prepares ...
Homotopy perturbation method for nonlinear partial differential equations of fractional order
(
Elsevier B.V.
, 2007 , Article)
The aim of this Letter is to present an efficient and reliable treatment of the homotopy perturbation method (HPM) for nonlinear partial differential equations with fractional time derivative. The fractional derivative is ...
Spectroscopic investigation of the charge-transfer interactions between 1,4,7-trimethyl-1,4,7-triazacyclononane and the acceptors iodine, TCNE, TCNQ and chloranil
(
Elsevier
, 2007 , Article)
The interaction of the interesting polynitrogen cyclic base 1,4,7-trimethyl-1,4,7-triazacyclononane (TMTACN) with the σ-acceptor iodine and π-acceptors tetracyanoethylene (TCNE), 7,7,8,8-tetracyanoquinodimethane (TCNQ) and ...
تحقيق فصل من كتاب (الجامع في الخاتم) للإمام الحافظ أبي بكر أحمد بن الحسين البيهقي (384هـ - 458هـ) : تحقيق ودراسة
(
جامعة أم القرى
, 2007 , Article)
هذا البحث يحتوي على مخطوط قيم كتبه الإمام البيهقي. وفي هذا المخطوط يوضح كيفية كان رسول الله صلى الله عليه وسلم يلبس خاتمه، ويقدم المخطوط إجابات لأسئلة مختلفة مثل: ١ – هل رسول الله صلى الله عليه وسلم اعتاد لبس خاتمه في أصابع ...
The effects of oxygen concentration on in vitro output of prostaglandin E2 and interleukin-6 from human fetal membranes.
(
Oxford University Press
, 2007 , Article)
Labour at all gestational ages has clear biochemical parallels with an inflammatory response, typified by the increased output of prostaglandins (PGs) and cytokines within the pregnant uterus. The main sources are the fetal ...
مشكلة الاختيار بين الزوجين : دراسة تحليلية للأسرة القطرية من منظور إسلامي
(
كلية دار العلوم - جامعة المنيا
, 2007 , Article)
خاتمة: نتائج وتوصيات:
بعد أن وصل البحث إلى نهايته، يكون من المتعين إيراد أهم النتائج والخلاصات وبعض التوصيات، ذات الأهمية البالغة في هذا الباب.
أولا: هم النتائج و الأفكار الرئيسة:
1- إن الاختيار الناجح للزوجين سبب رئيس ...