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Journal of Basrah Researches (Sciences)

مجلة ابحاث البصرة ( العلميات)

ISSN: 18172695
Publisher: Basrah University
Faculty: Education
Language: Arabic and English

This journal is Open Access

About

Journal of Basrah Researches- Sciences publish peer-reviewed research papers, aims to explore the research data, inventions, findings in all the field of applied sciences focusing on information that you can immediately use in your practice. The Journal of Basrah Researches- Sciences allows you to obtain effective and proven latest technological information regarding their current uses in the form of news items.
Date of First issue (1988)
No. of issues per year (4)
No. of papers per issue (22)
No of Issues published between 2004-2013 (53)

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Contact info

Journal of Basrah Research ( Sciences),College of Education for pure Science, University of Basrah, Basrah,Iraq
07801089172
dabrhs@hotmail.com


Table of content: 2017 volume:43 issue:1A

Article
CORE-POLARIZATION EFFECTS ON E2 TRANSITIONS IN EXOTIC NUCLEUS 70Ni

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Abstract

The structure of 70Ni nucleus is studied by using Particle-Vibration Coupling Model (PVCM), which separates the nucleus into three systems, vibrating core and two interacting neutrons. The vibration of the core is represented by single quadrupole phonon, and the two neutrons are assumed to occupy the state 1g9/2 and interacted by MSDI. A very well reproduction for the positive parity states of 70Ni is obtained by applying the PVCM. The core polarization effect that includes particle-hole excitation from the proton states of the core, to the states outside the model space with 2ℏω, is very necessary to reproduce the reduced E2 transition probability.


Article
Effect of Rockwool Fibers on the Mechanical Properties and Average Time of Burning of Low Density Polyethylene

Authors: Wisam A. Radhi
Pages: 52-61
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Abstract

The mechanical properties and average time of burning of composite were made from low density polyethylene with different wt% of Rockwool fibers (1, 2.5, 5, 7.5, 10)% w/w and found that the best ration of composites 7.5%. The elastic deformation properties of samples were evaluated by Loadedelongation measurement. The stress - strain results found that the elastic properties decrease with increasing of Rockwool fibers, while 10% is the best ratio that achieved best average time of Burning (ATB).


Article
Solvent Effects on Performance of P3HT: PCBM Organic Solar Cell

Authors: Mohammed T. Obeed
Pages: 62-71
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Abstract

Regioregularpoly(3-hexylthiophene)(P3HT):[6,6]-phenylC61- butyricacidmethylester (PCBM) active layer were found to significantly increase organic solar cell performance. photovoltaic devices with three solvents, Toluene (T), Xylene (X), and co-solvent Toluene:Xylene (T:X) were fabricated. The physical properties of these devices with different solvents are investigated. In this paper, we find that, absorption spectrum of the blend becomes more broad with different solvents, which is highly desirable for photovoltaic devices. Films morphology is evaluated by Atomic Force Microscopy (AFM). X-Ray diffraction (XRD) samples and External Quantum Efficiency (EQE) measurements are also performed for the active layers. The Power Conversion Efficiency (PCE) enhancement for the device with (T:X) is more significant than for other solvents. With different solvents, the solar cells upon (T:X) give (PCE) of 0.176%, in contrast to 0.144% for (T), and 0.079% for (X), devices.

Keywords

PCBM --- Organic --- Solar Cell --- toluene --- Xylene


Article
QSAR STUDIES OF AMINO ACIDS CONJUGATED 2-AMINO-ARYLTHIAZOLE AS ANTI-BACTERIAL

Authors: WISAM A. RADHI --- MAHIR A. JALAL
Pages: 72-85
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Abstract

Quantitative structure-activity relationships (QSAR) of 16 thiazole derivatives against five types of bacteria, namely: Klebsiella pneumoniae, Staphylococcus aereus, Escherichia coli, Bacillus substilis and Pseudomonas areginosa, was carried out. Physiochemical parameters were obtained computationally by optimization of chemical structures at minimum energy using molecular mechanics (MM+) theory and the semi-empirical molecular orbital (AM1) method. Then, multiple linear regression (MLR) analysis used to correlate changes in chemical structure and experimental antibacterial activity. Moreover, it is found that some descriptors are in strong dependences to provide good information and play important roles to evaluate antibacterial activity of thiazole derivatives. Results, 20 equations were found statistically with correlation coefficient rang (0.806-0.955). In addition, within the current QSAR study, the quality of the discriminant models was determined on the basis of correlation coefficient (R2 ), Fisher ratio (F), and standard error (S). Consequently, five good models with high correlation coefficient (R2 >0.9) were nominated as valuable theoretical base to improve 15 other subset predicted structures of amino acids conjugated 2-amnio-arylthiazole demonstrating anti-bacterial activity, and most of them showed good antibacterial activities against positive gram of bacteria.


Article
RADIUM CONCENTRATION AND RADON EXHALATION RATE IN WATER OF EUPHRATES RIVER IN THI QAR GOVERNORATE (IRAQ)

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Abstract

RADIUM CONCENTRATION AND RADON EXHALATION RATE IN WATER OF EUPHRATES RIVER IN THI QAR GOVERNORATE (IRAQ)

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Article
Simultaneous Approximation by Szὰsz-Kantorovich Operators

Authors: Jinan Abd AL Emam Najim --- Ali J. Mohammad
Pages: 100-107
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Abstract

In this paper, we study the simultaneous approximation by Szὰsz-Kantorovich type operators. We prove that these operators are converged to the function being approximated. Also, we discuss a Voronovaskaja-type asymptotic formula in simultaneous approximation for these operators.

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Article
Modular Character of The Covering group S ̅_23

Authors: Ahmed Hussein Jassim
Pages: 108-129
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Abstract

In this paper we find the modular characters of the covering group ̅ modulo p=7 which can give the irreducible modular spin characters for modulo p=7, also we give the decomposition matrix of ̅

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Article
On New Coincidence and Fixed Point Results for Single-Valued Maps in Partial Metric Spaces

Authors: Athraa Fadhil Abd Ali --- Amal M. Hashim
Pages: 130-137
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Abstract

In the present paper, we are interested in the study of the concept T, f  generalized condition B and combined with the concept of partial metric space and prove some common fixed point results in such a space. Our results generalize, extend and unify many results. Example is given showing the validly of our results.


Article
Structure of Positive Parity States in 141-147La Isotopes

Authors: Falih H. Al-Khudair
Pages: 138-149
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Abstract

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Article
A Study of Alpha Particles Effects with Different Energies on the Optical Properties of LR115 Detector by Using Spectrophotometer

Authors: H.Bakr
Pages: 150-170
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Abstract

A Study of Alpha Particles Effects with Different Energies on the Optical Properties of LR115 Detector by Using Spectrophotometer

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Table of content: volume:43 issue:1A