Transient mixed convection heat transfer in a confined porous medium heated at periodic sinusoidal heat flux is investigated numerically in the present paper. The Poisson-type pressure equation, resulted from the substituting of the momentum Darcy equation in the continuity equation, was discretized by using finite volume technique. The energy equation was solved by a fully implicit control volume-based finite difference formulation for the diffusion terms with the use of the quadratic upstream interpolation for convective kinetics scheme to discretize the convective terms and the temperature values at the control volume faces. The numerical study covers a range of the hydrostatic  pressure sinusoidal  amplitude  range and

Theoretical and experimental investigations of the transient heat transfer parameters of constant heat flux source subjected to water flowing in the downward direction in closed channel are conducted. The power increase transient is ensured by step change increase in the heat source power. The theoretical investigation involved a mathematical modeling for axially symmetric, simultaneously developing laminar water flow in a vertical annulus. The mathematical model is based on one dimensional downward flow. The boundary conditions of the studied case are based on adiabatic outer wall, while the inner wall is subjected to a constant heat flux. The heat & mass balance equation derived for specified element of bulk water within the annulu

This paper presents theoretical parametric study of the curvature ductility capacity for
reinforced concrete beam sections stiffened with steel plates. The study considers the behavior of
concrete and reinforcing steel under different strain rates. A computer program has been written to
compute the curvature ductility taking into account the spalling in concrete cover. Strain rate
sensitive constitutive models of steel and concrete were used for predicting the moment-curvature
relationship of reinforced concrete beams at different rate of straining. The study parameters are the
yield strength of main reinforcement, yield strength of transverse reinforcement, compressive
strength of concrete, spacing of stirrups and s

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The primary goal of this investigation is to study the effect of using mono and hybrid fibers on the fresh and hardened characteristics of Lightweight Self-Compacting Concrete (LWSCC). Slump flow test, L-box test, sieve segregation test, and V-funnel test were used to evaluate the workability of LWSCC. The mechanical characteristics of LWSCC were assessed by using compressive strength, splitting strength, and flexural strength. Four mixtures using two types of fiber: Steel fiber (St) and polypropylene fiber (PP) (0% fiber, 1% (St), 0.75% (St) +0.25% (PP), 0.5% (St) +0.5% (PP)) were made. According to the results, (St) fiber and hybrid fiber addition to LWSCC reduced its workability, although the values of tests

    تروم هذه الدراسة إبراز كيفية استثمار رواية "سمرقند" للتاريخ بوصفه أداة جمالية تقدم معرفة مثقلة بروح التساؤل،عن وجود الإنسان وعن تاريخه،عن هوية الأنا وحوارها مع الآخر، وصراع الإيديولوجيات،خاصة أن هذه الرواية تحدث متفاعلات نصية تاريخية، تقدم الوقائع المترامية عبر الأزمنة القديمة في شكل مكون نصي تخييلي قابل للقراءة والتأويل ،حيث يسافر أمين معلوف من الحاضر إلى الماضي من أجل أن يفهم الحاضر وأن يحمل

Back ground: Although adult stem cells possess plasticity that permit differentiation along new lineages, production of exocrine and endocrine pancreatic cells and insulin-secreting beta-cells from adult non pancreatic stem cells has been considered controversial. We present that highly purified adult rat hepatic oval stem cells, which are capable of differentiation to hepatocytes and bile ducts epithelium, can also trans-differentiate into pancreatic exocrine-endocrine tissue, when homogenized hepatic tissue is implanted into subcutaneous tissue .
Methods and Materials: A total of 60 adult Swiss albino rats were divided into two groups . Group I , control group (30 animals) was injected with normal salin

Backgrund: This study was carried out to determine the prevalence of chlamydia the pneumonia in community-acquired pnevmonia in Iraq.

الخلفية : ظهور المشيب هي علامة لتقدم السن وجدت انها تقترن بالقصور الشرياني . المتلازمة الايضية هي مايطلق على مجموعة عوامل الخطورة التي غالبا ماتزيد من مخاطر الاصابة بتصلب الشرايين.

الهدف : اختبار الاقتران بين العمر الذي يبدأ به ظهور الشيب والعرضة للاصابة بالمتلازمة الايضية.

الطرق : اربعمائة وواحد وثمانون شخص اشيب الشعر اشتركوا في ال

متلازمة النفق الرسغي هي واحدة من امراض الاعصاب المحيطية الشائعة الناتجة عن انضغاط العصب الوسطي في الرسغ اما كمرض اولي او ثانوي مصاحب لامراض اخرى ويعتمد تشخيصها على الاعراض والفحوصات السريرية ونتائج الفحوصات الكهروفسلجية للعصب الوسطي والعضلة المبعدة القصيرة للابهام. العلاج المتداول لهذه المتلازمة يتضمن تداخلات جراحية أو تداخلات تحفضية من عقاقير دوائية ومساند وعلاج فيزياوي طبيعي ومن ضمن تلك

Back ground: This study was conducted to estimate the relation ship of the incisive papilla to the antero posterior arrangement of the maxillary anterior teeth in a two different groups (Iraqi and Yemenian groups), because incisive papilla is considered as a reliable and relatively stable anatomic land mark.
Materials and Methods: Maxillary and mandibular stone casts were collected from 100 dental students, (50) of Iraqi dental students in Baghdad university and (50) of Yemenian dental students in Ibb university at the 3rd and 4th classes. Age ranged from 21-25 years. Alginate impression, dental stone, stock trays were used. Photographic technique was used to measure anatomic land marks located on de

Background: Determine how do obesity and type2 diabetes intertwined? and what it takes to turn an obese person into a person with diabetes. That link may help to understand why some obese people never develop diabetes while many others do. Serum sugar level was used as indicator of insulin level; leptin level was used as indicator of leptin resistance.
A total of 50 obese subjects were involved in this study, 25 obese subject (BMI >30) had diabetes mellitus type 2(no insulin dependant), selected from Baghdad teaching Hospital in Baghdad /Iraq. The remaining 25 obese (BMI >30) were normal healthy individuals.
Patients and Methods: ELSA technique was used for the measurement of serum leptin. Blood

Back ground: Zygote produce from once a sperm fertilizes an egg cell. Then, the zygote (unicellular) will begin chain of cellular cleavages to produce multicellular mass, its embryo, the differentiated to different tissues and organism. The development of the embryo is called embryogenesis. Coenzyme Q10, is an antioxidant produced in the body. It boosts cellular energy and may enhance the immune system. CoQ10 is present and measurable in seminal fluid, the concentration of CoQ10 directly correlates with both sperm count and motility. It is beneficial in the prevention and treatment a wide range of health problems. Objectives: The present study was aimed to investigate the possibility of using coenzyme Q10 to improve in vitro fertilization (

Background: This study was done to assist bond strength of glass ionomer cement reinforced by different amount of Hydroxyapatite
Materials and methods: In this study a hydroxyapatite materials were added to glass ionomer cement at different ratios; 10%, 15%, 20%, 25% and 30% (by weight) and the bond strength was detected by construction a cylinders from these mixed materials, constructed on exposed dentine of human extracted premolar teeth and by Zwick’s universal testing machine the bond strength were detected for these mixed materials.
Results: Results showed that the glass ionomer cement reinforced by hydroxyapatite has higher bond strength than conventional glass ionomer cement and the hydroyapat

The current study aims at identifying of the differences of life quality level for the academic instructors at Omar Al-Mukhtar University / Libya according to the city variable that the instructor belong to ( Libya, Iraq, Egypt ), and also according to gender Variable (Male - Female),To achieve the aims of study ,the researcher chose a sample consists of (210) instructors ( 170 males and 40 females) from four colleges at Omar Al- Mukhtar University/ Darna . The researcher built the scale of life quality which consists of (42) items in last version . The researcher has conducted the validity and reliability of the scale. and by using Analysis of Variance via (SPSS program). The research reaches the following results : 1-The life quality o

This research aims to identify the role of external environment factors on the quality of educational services, from the academic point of view, where the distribution of a questionnaire to a random sample of (100) university professors, and then analyzing a model, and test the validity of this model using structural modeling (SEM) (Structural Equation Modeling).
And then test the relationships between variables using the software of Statistical Package for Social Sciences (SPSS V.18), the research found a number of conclusions, the most important conclusion is: the external environment factors has significant impact on the quality of educational services.

Background: proteins, glycoproteins and fructose as parameters used to assess infertility in men.
Objective: To determine and correlate serum and seminal plasma of total proteins, glycoproteins and fructose with infertility in men.
Patients and Methods: The study was performed on 154 subjects; 109 infertile men (oligospermic and azoospermic) and 45 normal volunteers (normospermic men). All sera and seminal plasma were submitted for total proteins, glycoproteins and fructose levels measurment.
Results: No significant difference was noted in serum and seminal plasma of total proteins in oligospermic and azoospermic and that of normospermic men (P>0.05) compared to normospermic men. Statistical sign

Background: clinically significant macular edema (CSME) is the commonest cause of visual loss in patients with diabetes mellitus and laser focal photocoagulation is the golden standard for treating it. Patients and Methods: A frequency doubled Nd: YAG laser was used to treat all eyes included in this study with diabetic maculopathy. Thirty eyes of three insulin dependent and twenty six non insulin dependent diabetic Iraqi patients were included. The study involved twenty six males, three females and followed for one year. Their ages were ranging between 36- 59 years, all of them from patients attending ophthalmic out-patient department in the medical city in the period between January 2005 and June 2006

Background: Sacrococcygeal teratoma is seen in 1 in every 35000 live births, and is the most common tumor presenting in newborn and children but also reported in adults.(1)
Sacrococcygeal teratoma are the most common type of germ cell tumors (both benign and malignant) diagnosed in neonates , infants and children younger than 4 years.(2)
Case report: A 2 years old male child presented with a visible lump or mass under the skin at the top of the buttocks crease after falling on the ground on his buttocks, and the parents give a history that the child had a constipation since birth. The case was diagnosed as endodermal sinus tumor with yolk sac elements on the bases of clinical examination, ultrasonograp

Abstract

The Non - Homogeneous Poisson  process is considered  as one of the statistical subjects which had an importance in other sciences and a large application in different areas as waiting raws and rectifiable systems method , computer and communication systems and the theory of reliability and many other, also it used in modeling the phenomenon that occurred by unfixed way over time (all events that changed by time).

This research deals with some of the basic concepts that are related to the Non - Homogeneous Poisson process , This research carried out two models of the Non - Homogeneous Poisson process which are the power law model , and Musa –okumto ,   to estimate th

Background:Wilson’s disease (WD) is an inherited
disorder of copper metabolism that is characterized
by tremendous variation in the clinical presentation.
Objective: To assess demographic distribution,
clinical presentations, diagnostic evaluation, and any
association between clinical presentations and other
studied variables of a sample of Iraqi patients with
WD.
Methods: A descriptive cross sectional study with
analytic elements was conducted during 2011, from
the 1st of February till the 10th of June. The sampling
method was a convenient non-random one, carried
out through consecutive pooling of registered WD
patients. A questionnaire-form paper had been
developed for the process of data col

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Background: Techniques of Inguinal hernia repair have seen an evolution from the pure tissue repair to the prosthetic repair and in the recent years past to laparoscopic repair. High recurrence rates using fascia for the hernia repair or the use of sutures under tension prompted the development of polypropylene mesh to reinforce the posterior wall of the inguinal canal.The aim of this study is to compare the post operative results of Lichtenstein mesh technique with Dar ning repair.<br />Patients and methods:-A prospective study of "100" patients with inguinal hernia were conducted to evaluate two methods, of open repair of inguinal hernia Lichtenstein mesh technique with Traditional non-mesh technique (modified Bassini or Darning)

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. تكمن أهمية البحث في تعرّف إبداعات الطفل، التي تعد نقطة انطلاق لبناء شخصيته، فضلا عن أن الاهتمام بقدرات الطفل الإبداعية تعد أساسا لتكوينه المعرفي في المستقبل، ولذا فاعتماد الممارسة العملية تتيح للطفل امتلاك القدرة على نسج الأفكار من خياله، كونه قادرا على التعبير عن قدراته، وخاصة فيما يتعلق بالمجال الحركي، يهدف البحث إلى إجراء اختبار لعدد من الألعاب الحركية التي تنمي الإبداع الحركي لدى الأطفال، في عمر (5) س

       بدا القلق وضحا جراء ظاهرة الهجرة غير القانونية ومن التدفقات التي تصاحبها وتصل حدود الدول بشكل غير مسبوق ، دفعت الدول لاتخاذ مبدأ التعاون كحل أمثل للتغلب على التحديات التي صاحبت الهجرة غير القانونية ، التحديات تمثلت في وضع قواعد لمكافحة هذه الظاهرة ووضع سبل الوقاية منها ، لارتباطها بالجريمة بشكل واضح من خلال شبكات الجريمة المنظمة التي تسهل عملية تهريب المهاجرين عبر المياه الدولية ، وتهي

تسعى هذه المحاولة البحثية إلى إعادة تقييم للرواية الرسمية والنموذج التفسيري الذي انتجته محاكمات نورمبيرغ بشان الابادة النازية لليهود، والتحقق من مديات المطابقة بين هذه الادعاءات وبين الواقع التاريخي الفعلي للسياسات النازية ازاءهم، عن طريق تقديم قراءة لوظيفة معسكرات الاعتقال وعلاقتها ببرنامج " الابادة " المفترض والذي أطلق عليه " الحل النهائي، في سنوات الحرب العالمية الثانية. قسم البحث إلى ثلاث موضوعات ال

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