ISSN: 1817-2695

Volume 37, Issue 5

Volume 37, Issue 5, Autumn 2011, Page 1-98


Calculation of Directivity for rectangular aperture antenna

Waleed H.Al-Musawee and Ali A.S.Obaid; Hayfaa R.A.Kareem

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 1-11

Mathematical expression in a closed form for the directivity calculation of a rectangular aperture antenna is derived in order to evaluate how efficient a simple formula presented by other research workers is utilized to calculate the directivity of aperture antennas.

Using a single switch Working with soft Switching topology for the design and a study of an

Hassanin A. Hanon; and Sawsan S.F Al-ghazawi

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 12-21

In this study, a proposed AC - AC Converter has been implemented by using a single switch conductor in parallel with electronic circuit. The proposed converter Consists of LRC output filter and also input circuit consists of a bridge rectifier and RC filter. The circuit have one controlled power switch operates in soft switching mode and serves as a high frequency generator. Output power is controlled via switching frequency. This Circuit can be used in industrial thermal applications. A detailed analysis of the models has been investigated in this paper.

Radon Concentration Measurement in Water of Dhi - Qar Governorate (in Iraq) Using Emanometer

H. A. Hammood and I. J. M. Al-Khalifa

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 22-29

The aim of this study is to measure the radon (222Rn) concentration in water of rivers and groundwater in Dhi-Qar governorate (Iraq). The measurements were performed by analyzing the water samples collected from 58 location, using Emanometer techniques.
The obtained radon concentrations ranged from 116 Bq/m3 to 601 Bq/m3 in river water and from 355 Bq/m3 to 681 Bq/m3 in the wells water. The results are presented and compared with other studies. The results could be utilised to make distinctive supplementary contributions when contamination event occurs and to implement water quality standards by concerned authorities to maintain radioactive contamination-free drinking water supplies for the people.

Numerical Model for the Study of the Velocity DependenceOf the Ionisation Growth in Gas Discharge Plasma

Jassim T.Mahdi and Fahmi S. Radhi; Noori H.N.Al-Hashimi

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 30-38

The influence of the velocity on the development of the ionisation has been investigated for the study-state plasma. The cascade ionisation (represented by a constant ionisation coefficient) was assumed to occur over a finite length of an infinite cylinder and the only loss processes considered over this length were electron diffusion. The calculation has been carried out for an open cylinder by using a two dimensional numerical model. The required cascade ionisation, to sustain a given plasma density, has been calculated as a function of velocity.

Effect of bone marrow on superficial digital flexor tendon healing in sheep

ay A.Al-Bahli; Abdalbari Abbas Alfaris; A.A.Swad; and

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 39-47

The present study was to compare the effectiveness of bone marrow transplantation on the healing of experimentally transected superficial digital flexor tendon in sheep. Eight adult sheep, aged between 9 months to one year were used. The animals were divided into two equal groups (control and allograft). An transverse cutting has been made in the superficial digital flexor tendon of the middle third of the metatarsal bone under the effect of sedation and local anesthesia. The tendons were sutured with Bunnell suture by using polypropylene thread (2.0 usp) in the control group. While in allograft groups 2-3ml allograft bone marrow was injected at the site of suture tendon which was induced by similar procedure as in control group. The incision was closed as a routine manner.
Gross examination showed adhesions between the tendon and adjacent structures which were severe in the control group , less than that in allograft. Histopathological observations of biopsies harvested after (15,30 and 60 days) showed dense immature collagen fibers which was characterized by regular direction, uniform of their cellular elements filled the gap space of tendon injury with more adhesion in late stages of the control group. In allograft treated group inflammatory cells and arrangement fibrous connective tissue with collagen fibers appear more than in the control group in the same period with less adhesion.

Diplectanid parasite from the gills of the triacanthid fish (Triacanthus biaculeatus) captured from Khor Abdullah, Northwest Arabian Gulf, Iraq

Essa T. Mohamad and Sundus J. Razak

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 48-53

In the present study a description of unidentified monogenetic parasite detected from the gills of short nose tripod fish Triacanthus biaculeatus ( Bloch ,1786) was given and it is clear that this parasite differs from the other related diplectanid species by owing a special structure in its cirrus poach. So, its appearance is considered as a new record in the Arabian Gulf waters.

Genetic polymorphisms of GSTM1 and GSTT1 Genes and Endometrial Cancer in Basrah, south of Iraq

Adnan Issa Al-Badran

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 54-59

The genes glutathione S- transferase M1 (GSTM1) and GSTT1 involved in phase II metabolism catalyse glutathione – mediated reduction of exogenous and endogenous electrophiles. A case control study was designed to identify the association between polymorphisms at GSTM1 and GSTT1 genes and endometrial cancer risk. While there was a lack of association between GSTM1 null genotype with the risk of endometrial cancer, the null genotype of GSTT1 had a 5.7 fold increased risk toward endometrial cancer (OR=5.76; 95% CI = 2.07-15.97). Both GSTM1, GSTT1 null genotype increased risk to about 3 fold. When stratified according to different grades of endometrial cancer the GSTM1 was more representative in grade III (OR=2.6), the association becomes stronger when the GSTT1 gene was also null (OR= 4.6).

Evaluation of antibacterial activity of essential oils of Cinnamomum sp.and Boswellia sp.

Ali A. Shareef

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 60-71

Essential oils of cinnamon (Cinnamomum sp.) and frankincense (Boswellia sp. ) have been investigated for their antibacterial activity against six bacterial species including Escherichia coli , Staphylococcus aureus , Pseudomonas aeruginosa , Brucella sp., Klebsiella pneumoniae,and , Proteus sp. .The minimum inhibitory concentration (MIC) of these essential oils were determined using an agar dilution method .MICs of Cinnamomum sp., and Boswellia sp. essential oils ranged from 64-128 µg/ml and 2-80 mg/ml respectively .GC-MS technique was used for constetuent analysis of these oils. The composition of Cinnamomum sp. oil was dominated by cinnamaldehyde (41.62 %),acetic acid,octyl ester (13.58 %) , eugenol (7.1 % ) , coumarin(4.04 %) ,pregnane-11,20dione,3,17-dihydroxy (3.46 % ),and 1-octanol(2.64 % ). The main constituents of Boswellia sp. oil was acetic acid octyl.ester(49.46 % ),1-octanol (15.37 % ),1,6-octadien-3-ol,3,7-dimethyl (6.64 % ),acetic acid trimethyl-bicyclo,hept-2-yl ester (2.28 % ),and propane,1-bromo (1.1 % ).

Crystalluria types and incidence in Basra City; southern of Iraq

Jubran K. Hassan

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 72-81

In Basra City, Southern of Iraq there was increase in the incidence of urinary tracts problems, these problems include frequent urinary tract infection and crystalluria .
The purpose from our study is to find out which predominant types of crystalluria and which gender and age has higher incidence values ; where 328 urine samples for males [n=91] and females [n=237] of different ages where analyzed by general urine examination, and sediment was identified by polarized optic microscope to differentiate types of crystals. The average age of patients, expressed as mean + standard deviation, was [38.05 + 17.57], and age range extended from ≤ 9-80 years and divided into seven age groups from ≤9 years old to equal to or greater than 60 years old .The data was analysed statistically by using t test and chi analysis of frequency at p<0.05. The results showed only two types of crystalluria are found. Which is uric acid that represented 96.03%, and Calcium oxalate that represented 3.97 % .There was no cysteine, or struvite crystals. Incidence percentage of uric acid crystals was greater in both genders (95.6% for males and 96.2% for females) as compared with the incidence percentage of calcium oxalate (4.4% for males and 3.8% for females) , and there was no significant difference between males and females in the incidence percentages for each type of crystalluria .
The patients samples were then divided into seven age groups from ≤ 9 years old to equal to or greater than 60 years old and there were no significant differences (at p<0.05) among all age groups in the incidence percentage of each type of crystalluria.
Our finding there were only two types of crystalluria are most predominant ; those are uric acid and calcium oxalate and the incidence of uric acid crystalluria was significantly greater than oxalate in both genders and age groups, which may be greatly different from that reported in several studies outside country .

Theoretical study for Synthesis Reactions of α-Alkylidene-γ-butyrolacton-2-ones (Tetronic acid Derivatives)

A.M.Dhumad

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 82-89

Multicomponent reaction for the synthesis of α-alkylidene-γ-butyrolacton-2-ones as Tetronic acid analogues is studied theoretically by performing Density Functional Theory calculation at B3LYP / 6-311G (d,p) levels of theory. There are two isomers of α-alkylidene-γ-butyrolacton-2-ones in different forms (E and Z). The calculation has shown that the major product (E-isomer) has highest value of nuclear repulsion energy in comparison with minor product (Z-isomer). In this study method is reported to indicate theoretically the major and the minor products for reactions before we do those reactions by using Density Functional Theory calculation at B3LYP / 6-311G (d,p) to the expected product and the major product which have highest value of nuclear repulsion energy . The MOs calculations, the energy of the highest occupied molecular orbital (HOMO) and the energy of the lowest unoccupied molecular orbital (LUMO) and HOMO-LUMO gap was also calculated at the same level.

Preparation and Characterization of novel 3-(4-chloro phenyl)-1- nitro phenyl-5-(substituted phenyl)-formazans

Ahmed M. Jasim

Journal of Basrah Researches (Sciences), Volume 37, Issue 5, Pages 90-98

In the present research, a series of 3-(4-chloro phenyl)-1- nitro phenyl-5-(substituted phenyl)-formazans (5a-d) were synthesized by the condensation of schiff base(3)and diazonium salt of various substituted aromatic amines (4a-d). The Schiff base (3) was itself synthesized by the condensation of 4-nitro aniline(1) with 4-chloro benzaldehyde(2). All the reaction were routinely monitored and purity was determind on thin layer chromatography using coated aluminum plates and spots were visualized by exposing the dry plates in iodine vapours. The structures of the compounds have been confirmed by elemental analysis, Mass spectroscopy , 1H NMR, U.V, IR spectral data and melting points.