Volume 17 Issue 1

Published: 2025-06-25

Contents


Article
Mineralogy and Petrography of Marl Sediments Within the Fat`ha Formation in Selected Parts of Northern Iraq

Zeki A. Aljubouri, Hazim A. Al-Kawaz,

X-ray diffraction analyses and petrographic study of marl samples belonging to the Al-Fat`ha Formation (Middle Miocene) from four selected localities in northern Iraq, revealed the presence of the...

DOI: 10.33899/rjs.2006.43263

Pages: 19-31
Estimation of Cholesterol Level During Pregnancy

Sura H. Al-Fakhry, Huda Y. Al-Attar,

Normally pregnancy especially at late gestation associated with metabolic changes, like changes in maternal storage of adipose tissue, hormonal secretions and lipoproteins concentrations....

DOI: 10.33899/rjs.2006.43257

Pages: 1-4
A Parallel Optimization Method Based on the Theory of Parallel Subspaces

Khalil K. Abbo, Bashir M. Khalaf,

The purpose of this paper is to develop a parallel algorithm for solving unconstrained optimization problems. This parallel algorithm in which several tasks may be executed at the same time in...

DOI: 10.33899/rjs.2006.43270

Pages: 50-58
A New Method for the Synthesis of Some 1,5-Diphenyl-3- Aryl-4,5-Dihydro-1,2,4-Triazole

Said A. Said,

Condensation of aromatic aldehydes with benzamide affords the corresponding arylidenbenzamide as a new conjugated system . The reaction between these compounds and phenylhydrazine in acidic...

DOI: 10.33899/rjs.2006.43260

Pages: 5-10
New Hybrid CG-Projected Bfgs for Minimization

Osama H. Ta, Abbas Y. AL Bayati,

In this paper an hybrid CG direction and a modified direction of the Storey's projected version of the BFGS Quasi-Newton (QN) update of optimization is investigated theoretically and...

DOI: 10.33899/rjs.2006.43265

Pages: 38-49
New Insertae Sedis Genus Angelucysta from the Lower Carboniferous Dinantian of Iraq

Maha A. AL-Hasson, Amer D. Nader,

A distinctive form of insertae sedis cyst is described in detail from samples of Ora, Harur Formations and Unit A in boreholes Kh5/1 and Khleisia-1. It constitute the monotypic base for new genus...

DOI: 10.33899/rjs.2006.43264

Pages: 32-37
The Wiener Polynomial of The Tensor Product

Walid. A. Saeed, Ali. A. Ali,

Let G1 and G2 be vertex disjoint connected graphs such that each edge of G1 and G2 is a triangle edge. In this paper, the coefficients of the Wiener polynomial of the tensor product G1G2 are...

DOI: 10.33899/rjs.2006.43275

Pages: 67-77
New Sampling Three-Term Preconditioned PB Algorithm

Nada F. Hassen, Abbas Y. Al Bayati,

In this paper a new sampling three-term preconditioned PB algorithm is developed and implemented. The proposed sampling algorithm runs parallel to the original PCG Method Once a pair {vk, yk} has...

DOI: 10.33899/rjs.2006.43272

Pages: 59-66