The evacuated tube solar collector ETC is studied intensively and extensively by experimental and
theoretical works, in order to investigate its performance and enhancement of heat transfer, for Baghdad climate
from April 2011 till the end of March 2012. Experimental work is carried out on a well instrumented collector
consists of 16 evacuated tubes of aspect ratio 38.6 and thermally insulated tank of volume 112L. The relation
between convective heat transfer and natural circulation inside the tube is estimated, collector efficiency, effect of
tube tilt angles, incidence angle modifier, The solar heating system is investigated under different loads pattern (i.e
closed and open flow) to evaluate the heat loss coefficient

Generally, direct measurement of soil compression index (Cc) is expensive and time-consuming. To save time and effort, indirect methods to obtain Cc may be an inexpensive option. Usually, the indirect methods are based on a correlation between some easier measuring descriptive variables such as liquid limit, soil density, and natural water content. This study used the ANFIS and regression methods to obtain Cc indirectly. To achieve the aim of this investigation, 177 undisturbed samples were collected from the cohesive soil in Sulaymaniyah Governorate in Iraq. Results of this study indicated that ANFIS models over-performed the Regression method in estimating Cc with R² of 0.66 and 0.48 for both ANFIS and Regre

Background: The collagen triple helix repeat containing 1 (CTHRC1) protein has been connected to decreased levels of vitamin D and calcium, as well as obesity. This study aimed to investigate the relationship between CTHRC1 and osteoporosis in post-menopausal women and compare with healthy subjects. Subjects and Methods: A cross-sectional study consisted of 86 women were enrolled in this study and divided into three groups based on the results of dual-energy densitometry (DXA): 30 women with osteoporosis, 30 women with osteopenia, and 26 healthy women. Data on demographic and clinical features and laboratory values of Calcium (Ca) and Vitamin D3 (V.D3) were recorded. Results: Women with osteoporosis had significantly increased level

ساهم توافد العمالة الأجنبية في تفاقم مشكلة البطالة في العراق الذي يستقبل المئات منهم سنوياً، في ظل تخرج آلاف الطلاب من الجامعات العراقية وانطلاقهم إلى سوق العمل بالتزامن مع عدم تنشيط دور القطاع الخاص بسبب التجاذبات السياسية والأوضاع الاقتصادية والأمنية التي أثرت بشكل كبير في تفعيله وجذب المستثمرين، وعلى رغم ذلك استمر توافد العمالة الأجنبية التي وجدت في العراق عبارة عن فرص ثمينة لا سيما في قطاع الخدمات، مما

It is weII known that Iraq was alerted to  the fact the need to catch up with globalization and the need  to attract foreign investment , perhaps the solutions is able to or control  over its economic problems which centers on the problem pf unemployment .

        Imposing the Investment Law No (13) for the year 2006 is the most basic steps to attract foreign investment through Madmen Law of incentives KaIiafaouat tax , it must be the study of those exemptions and compare them with tax  exemptions for some of the investment Laws of the Arab countries as one investment Lebanese , Jordanian and Egyptian that we have the knowledge Marvel Law Iraqi investment in respect of such &

مفهومية فن الفخار في عصور قبل التاريخ في العراق

التعددية الحزبية في العراق في ظل غياب قانون الاحزاب

This study aimed at identifying the extent to which the social worker used the techniques of group discussion in the professional practice with the groups of school activity in the schools of Tubas governorate in light of some variables (gender, years of experience, academic qualification). The analytical descriptive method was used due to its suitability for the objectives of the study.  A questionnaire was designed to collect data that included (30) items, distributed in three areas .The validity and reliability of the tool were verified and then distributed to the study sample.

The results of the study showed that the highest averages were in the discussion stage domain, where the pre-discussion stage was m

The products of the surrealist school since its inception to this day have greatly influenced art in the world, so we find many artists around the world invested in their visual texts the forms generated by surrealism, and here the researcher raises several questions: What are the formal vocabulary that directly or indirectly refers to Self-used by the surrealist painter? Was the surrealist form understood as intended by the movement? In these questions, the research problem is summarized. The importance of it lies in identifying the references to the form of the human self, which are related to the psychological field in the works of the surrealists, especially Salvador Dali. Then the researcher chose his research community from the wor

Break in the bond and its impact on the difference of scholars