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The present investigation was done to clarify the histological and histochemical characteristics of the well-developed prostate gland in the adult local dogs (Canis familiaris). The tissue specimens were taken from the prostate gland, the samples were processed by routine histological techniques and stained. Histologically, the body of the prostate in resting was characterized by abundant amounts of fibrous tissue with little glandular lobes that were surrounded by a very thick fibromuscular capsule. Each lobe was composed of numerous variable size lobules that contained several alveoli lined by simple cuboidal cells. While in stimulating status, the gland is characterized by much amount of glandular tissue, thin fibro muscular capsule and thin interlobar connective tissue. The disseminated part of the prostate gland was composed of little scattered small size glandular lobules within the subepithelial cavernous tissue of the urethra about (1-2) cm post body of prostate. Histochemical, the stimulating prostate showed marked intense magenta colour which referred to the presence of both acidic and neutral glycoprotein secretory products when stained with Combine Alcian blue (2.5 pH) + PAS stain. In conclusion, this study showed the differences between the prostate glands in the resting and stimulating status in local breed dogs.

Photolysis of methylene blue was studied by using an advanced UV/H2O2 oxidation process. This study investigated different initial dye concentrations (I0, 20, 30 ppm) using different concentrations of H2O2 (10 %, 30%, 50 %) in three additions (5 mL, 10 mL, 15 mL). The results showed that the degradation efficiencies of this dye at different concentrations were as follows: 99.86 % at 10 ppm using 15 mL of 10 % H2O2 after 60 min, 99.22 % at 20 ppm using 15 mL of 30 % H2O2 for 60 min, and 98.90 % at 30ppm using 15 mL of 50 % H2O2 after 90 min. An increase in the optimum concentration of H2O2 was observed with an increase in the initial dye concentration. The de-coloration time also increased with increasing initial dye concentration.

هدف البحث تقويم دورة طرائق التدريس والتدريب الجامعي من وجهة نظر المتدربين وللتحقق من ذلك وضع الباحثان هدفين للبحث هما: التعرف على آراء المتدربين نحو برنامج دورة طرائق التدريس والتدريب الجامعي. التعرف على الفروق بين آراء المتدربين وفق متغير ( الجنس، التخصص ). وتكونت عينة البحث من (27) تدريسي وتدريسية من تدريسي جامعة زاخو وهم المشاركون في دورة طرائق التدريس المقامة في الجامعة المذكورة للعام الدراسي 2013-2014. واعتمد الباحثان على المنهج الوصفي التحليلي لوصف الظاهرة كما هي في الواقع، واعد الباحثان استبياناً لقياس ذلك ويتكون من ( 28 ) فقرة موزعة على خمسة مجالات (تقويم التدريسي المحاضر، المادة العلمية، المجال التنظيمي، تقويم الاختبارات، نواتج الدورة )، وبعد الانتهاء من فترة الدورة طبق الباحثان الأداة على أفراد عينة البحث وجمعت البيانات وحللها إحصائيا باستخدام الوسائل الإحصائية المناسبة والبرنامج الإحصائي spss وقد بينت النتائج ما يلي: وجود فرق دال في آراء المتدربين ولصالح برنامج الدورة. وجود فرق بين متوسطي آراء المتدربين وفق متغير ( الجنس). عدم وجود فرق بين متوسطي آراء المتدربين وفق متغير (التخصص ).

Centrifugal fans are used widely in most of the manufacturing processes for ventilating and/or air conditioning the working areas. Because of relatively limited documentation on the design of this type of fans, experimental and theoretical works are investigated in this paper for forward backward centrifugal fan to calculate the average dynamic pressure and axial thrust forces at different speed conditions. The flow in centrifugal fan is highly complex with taking place on the impeller. The centrifugal fan simulated using computational fluid dynamic (CFD) approach. Flow in centrifugal fan with duct is simulated by Navier – Stokes equation and performance curved are obtained. Most of companies creates in 3D model in Solid works version 2013 and the conduct analyses by the CFD programs. At first step, an experimental step was developed and prototypes of impeller was made to carry out at the south Baghdad power plant for the sake of flow measurements and next, computational fluid dynamics model was developed for the above step and the result are validated with experimental measurement. Fine mesh is generated for centrifugal fan with duct in GAMBIT programs to carry out analyses for whole computational domain in fluent programs. Further parametric studies were carried out to calculate the average dynamic pressure when rotating the impeller backward and forward rotation modes. The parameter considered in this study are changing in dimension of outlet duct at different speeds...

This paper asserts that the definition of "labor force", which is prevalent in the economic literature, is inappropriate for evaluating women's work because it does not consider domestic housework and related activities as part of the labor force. About 140 women were interviewed and their experiences regarding the work they contributed in traditional society were recorded. Analysis of time budgets was used to collect and measure the flow of women's labor input into domestic housework and related activities. It was concluded that evidence is irrefutable that this work is important and must be included in any definition of labor force. [ABSTRACT FROM AUTHOR]

An experimental study was done to investigate the effect of fin geometry modification and material type on heat dissipation from a heat sink under natural convection. v-corrugated solid fin and v-corrugated perforated fin were designed for this purpose. Aluminum and Copper metals were selected in designing the fins because their wide application in cooling and heating equipment. Three different voltages 110, 150 and 200 V supplied to the heat sink to study their effects on the fins performance. Each experiment repeats two times to reduce the error and the data recorded after reaching the steady state conditions. The utilization of solid and perforated v-corrugated fins is compared. The results showed that perforated fins dissipated heat more than corresponding solid by 15.4, 34 and 32% for aluminum, and 2.7, 2.1 and 4.3% for copper fin in the three voltages. Also, the results indicated that the heat loss by solid copper fin is greater by 56, 72 and 92% than corresponding solid aluminum fin and for perforated fin case by 38, 31.7 and 51.9 % at 110,150 and 200 V respectively.