ISSN: 1817-2695

Volume 39, Issue 2

Volume 39, Issue 2, Spring 2013, Page 1-90

The Preparation and Studying The Electronic Transition for Cadmium Oxide Thin Film dopped with Magnesium

Haidar Gazy Lazim and Khalid I. Ajeel

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 1-14

The aim of the research is studying the effect of doping with magnesium with ratios (1,3,5 and 7 %) on the structure and on the electronic transitions in the CdO thin films with thickness 150 nm, which are prepared by Chemical deposition method on glass substrates heated to 400 oC. The prepared films were examined by X-Ray diffraction technique , which showed that all prepared films are polycrystalline . The absorption cofficient , and the direct energy gap were calculated . It has been found that the absorption cofficient increaseas the percentage of dopants increases, and the optical energy gap decreases as the percentage of dopantsincreases.

Effect of different level of auxin IAB on rooting planted of cutting of Solanum melongena L. c.v. gallien F1

Huda A. Al-Taha; Abd Alla A. Abdalla and Samera A. Matrood

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 15-19

he study was carried out at lethal house of Department of Horticulture, College of Agriculture, Basrah University during the period 5th April to 25 th of May to find out the effect of different concentration of Indol butyric acid (IBA) (0, 100, 200, 300 ppm). On rooting of cutting of solanum melongena L. c.v. GALLIEN F1.
Results showed that all treatment gave a complete rooting (percentage of 100) of the planted cutting.
IBA at concentration of 100 ppm, gave significant increase in root length. Also fresh and weight in comparison of other treatment.

Impact different levels of temperatures and relative humidity on toxicity of three pyrethroids insecticides against saw grain beetle

Ihab A. Alnajim

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 20-30

The present study has been conducted to determine the effect of four temperatures 20, 25, 30 and 35 o C and two levels of humidity which were 55 and 75% on the toxicity of three pyrethroid insecticides cypermethrin 10 % EC , Alphcypermethrin 10 % EC and fenvalerate 20 % EC against saw grain beetle Oryzaephilus surinamensis ,the tested concentrations were 0.01 , 0.05 , 0.1 , 0.5 and 1ppm of insecticides.
Results showed that each of the temperature and humidity has a significant impact on all tested chemicals, the high mortality percent were seen at temperature of 30 oC which were 80.10 , 76.13 and 60.67% for cypermethrin, Alphcypermethrin, fenvalerate respectively. While the level of humidity 55% has a significant effect on the mortality which were 60.72 and 52.90% for Alphcypermethrin and fenvalerate, respectively, and differs significantly than the level of humidity of 75%, while the level of humidity 75% has significant effect on the mortality for cypermethrin which was 73.27%.The results of toxicity showed the temperature 30oC has significant impact on LC50 which were 0.010 , 0.010 and 0.032ppm for cypermethrin, Alphcypermethrin and fenvalerate respectively, and the humidity 55% gave the lowest values for Alphcypermethrin and fenvalerate which were 0.033 and 0.084ppm respectively, while the LC50 of cypermethrin was the lowest at the humidity 75% which was 0.019ppm.

Antibacterial Activity Evaluation of Zingiber offcinale Extracts against Helicobacter pylori

Lyla Naser Harab

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 31-41

In this study, the antimicrobial effect of aqueous alcoholic extract and essential oils extract of Zingiber offcinale were assayed against six isolates of Helicobacter pylori. The crude extracts gave activity against the tested isolates by the range from 15-18 mm, while the essential oils gave activity higher than crude extract by the range from 20 – 24 mm.
The MIC was determinate by the range from 250 – 400 mg/ml. also the sensitivity was tested towards a number of common antibiotics, the results showed that the Zingiber offcinale have activity near the antibiotics.

Study toxicity of green algae Lyngbya martensiana Menegh. Ex Gomont and its Histopathological effects on gills of swordtail fish Xiphophorus helleri

Ahmed Muhssin Athbi; Ali Abd Al-Llatif Al- Ali and Yusra Tarik Yassen Alrudainy

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 42-70

The toxicity of the blue green algae Lyngbya martensiana Menegh. ex Gomont which isolated from some water floats in Basrah city was studied on fishes Xixiphorus hellari . The algae used as food for fishes to study the effects left by it on gills of them . The effect of toxicity were studied at successive periods started from 5, 10, 15 20 ,25 , 30, 40, 50, 60 , 70 and up to 80 days. The toxic chemical compounds [Thioura trimethyl, 7- Hexadecenoic acid and Cyclohexasilioxane, dodecamethyl] were isolated and identified from algae by used gas chromatography - mass technique [GC- Mass] . Histopathological changes were studied using tissue sections in the gills of different periods . It did not show any changes after 5 days, but after 10 days showed some changes represented by detachment of epithelial layer of the secondary gill lamellae and change in the straight shape of the secondary gill lamellae which have form of the letter L. The changes increased after 15, 20 and 25 days and subsequent periods , they were represented by hyperplasia in secondary gill lamellae , aneurism and congestion of blood capillary of secondary gill lamellae, adhesion of secondary gill lamellae from free ending , adhesion separated epithelial tissue of one secondary gill lamellae with separated epithelial tissue of neighboring secondary gill lamellae , aggregation and hypertrophy of chloride cells , presence of oedema , necrosis of the blood capillary And changes included osteoporosis in the bone which surrounds the pulp cartilage and osteomitosis.

Extraction and Identification of Hydrocarbon Compounds of some species of metallic blow flies (Diptera : Calliphoridae) .

Nadia K. Thamir and Dhia Kh.Kareem

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 71-90

Extraction and Identification of hydrocarbon compounds from six species of metallic blow flies ; Chrysomya megacephala , Ch . albiceps , Calliphora vicina, C. livida , C. terreanova and lucilia sericata , were determind by using GC- Mass technique. The results show that alkenes whith hydrocarbon chain between (C12-C36) with apredominant of the leniar alkanes with highest percentage of 16.53 % for Tricosane compound in Ch.megacephala , whereas the loest percentage was 0.29% for Nonacosane in Calliphora terreanovae , the leniar alkenes with lowest percentage 6.9% in Ch. megacephala . The latter species had highest number of quannititae of hydrocarbons , however the species C. livida have lowest numbers. The species C.vicina and C.livida which the hydrocarbons content was identical with a little and trace variation ,thus a futher investigation regarding their classification is needed .