Volume 25 Issue 1

Published: 2025-06-25

Contents


Article
A Study of some Cosmological Parameters at Different Eras of the Universe

Mohammed K. Zeki,

This work deals with the implication of the concept of the energy density at three different eras (radiation, matter and dark energy dominated eras) through the evolution of the universe. The...

DOI: 10.33899/rjs.2014.86090

Pages: 108-119
Synthesis and Characterization of Mn(II), Fe(II) and Co(II) Complexes with 4-Hydroxypiperidinedithiocarbamate and their Adducts with Neutral Bases

Hasan A. Mohammed, Saad E. Al- Mukhtar,

A new coordination complexes and adducts of the general formulas [M(hpipdtc)2] and [M(hpipdtc)2Ln] where M= Mn(II), Fe(II), Co (II), (hpipdtc)=4-hydroxypiperidinedithiocarbamate, n=1 L= 1, 10phen,...

DOI: 10.33899/rjs.2014.86068

Pages: 53-61
Isolation and Identification of Saccharomyces cerevisiae var boulardii and its Uses as a Probiotic (in vitro)

Khanda O. Khidhr, Zainab M. AL Zubaidy,

The study included isolation and identification of Saccharomyces cerevisiae var. boulardii from fresh and dried fruits such as (fig, grape, apricot, lychees, mangosteen) which were available in...

DOI: 10.33899/rjs.2014.86051

Pages: 1-11
Spectrophotometric Determination of Niclosamide by Prior Reduction and Subsequent Diazotization-Coupling with 2,6-Dihydroxybenzoic acid – Application to Tablets

Nabeel S. Othman, Saad H. Sultan,

A simple, rapid and sensitive spectrophotometric method is proposed for the determination of niclosamide (NIC) in pure form and in its pharmaceutical preparations. The method is based on the...

DOI: 10.33899/rjs.2014.86065

Pages: 40-52
Synthesis, Characterization and Antimicrobial Evaluation of some Schiff Bases Derived from Symmetrical 4-amino-1,2,4-triazole

Badie A. Ahmed, Salim J. Mohammed, Bassam T. Khalil,

A series of new Schiff bases, namely 4-(substituted benzylidene amino)-4H-1,2,4-triazoles (5a-j) derivatives were synthesized by the reaction of symmetrical substituted 4-amino-1,2,4-triazole (4)...

DOI: 10.33899/rjs.2014.86070

Pages: 62-68
Study of Latent Matrix Metalloproteinase- 1 Activity in Serum and Synovial Fluid of Patients with Rheumatoid Arthritis

Zahraa M. Hamoudatt, Layla A. Mustafa, Saad M.AL-Hasani,

This research was concerned with the measurement of latent matrix metalloproteinase-1 (MMP-1) activity in serum and synovial fluid (SF) of rheumatoid arthritis patients, and evaluation the effect...

DOI: 10.33899/rjs.2014.86062

Pages: 31-39
The Effect of Isolated Obestatin Hormone from Plasma on some Biochemical Parameters in Normal and Diabetic Rats

Thikra A. Allwsh, Jehan A. Mohammad,

The study included an attempt to isolate and purify obestatin from healthy human plasma using different biochemical techniques. Two proteinous peaks had been isolated by gel filtration...

DOI: 10.33899/rjs.2014.86076

Pages: 82-100
Antibacterial Effects of Lactic Acid Bacteria Cell Free Extract on the Growth of Local Isolates of Listeria moncytogenes from some Food Sources

Zainab M. Alzubaidy, Shean I. Kakey, Jassim F. Ali,

The present study aimed to determine the antibacterial activity of lactic acid bacteria metabolites against Listeria monocytogenes which was isolated from some foods in local markets of Erbil and...

DOI: 10.33899/rjs.2014.86055

Pages: 19-30
Sensitive and Selective Spectrophotometric Assay of Lead in Aqueous Solution

Dheeya J. Yacoob,

A sensitive and selective spectrophotometric method for the determination of lead (II) in aqueous solution using zincon reagent has been developed. The pinkish red coloured complex was formed at pH...

DOI: 10.33899/rjs.2014.86073

Pages: 69-81
Semi Empirical Equation for the Calculation of the Track Diameter of Alpha Particles in CR-39 as a Function of Etching Temperature

Mushtaq A. Al-Jubbori,

In this paper a new semi empirical equation describing the track diameters of particles in CR-39 is presented. The equation involves three free fitting parameters. It is shown that this equation...

DOI: 10.33899/rjs.2014.86092

Pages: 120-126
Detection of Aspergillus Species in Dried Fruits Collected from Duhok Market and Study their Aflatoxiginic Properties

Asia A. Saadullah, Samir K. Abdullah,

Samples from four types of dried fruits (apricot, fig , grapes and plum) were collected from local markets at Duhok governorate and surveyed for their contamination with Aspergillus species. A...

DOI: 10.33899/rjs.2014.86052

Pages: 12-18
Dispersion Properties of Up-doping Photonic Crystal Fibers

Huda M. Mohammad, Nawfal Y. Jamil, Abdulghafoor I. Abdullah,

In this papers the novel photonic crystal fibers (PCFs) which consist of air holes surrounded by other substances with triangular lattice arrangement have been assumed. A Full-vector plane wave...

DOI: 10.33899/rjs.2014.86089

Pages: 101-107