Table of content

kirkuk university journal for scientific studies

مجلة جامعة كركوك للدراسات العلمية

ISSN: 19920849 26166801
Publisher: Kirkuk University
Faculty: Science
Language: Arabic and English

This journal is Open Access

About

The Kirkuk University Journal-Scientific Studies (KUJSS) is an official publication of the Faculty of Science at the University of Kirkuk. It was originally published in 2006 with two issues per year. Currently the journal is published every quarter (4 issues a year) since 2013. KUJSS publishes original papers, technical and research papers, in different disciplines (Astronomy, Pure and Applied Physics, Computer Science & Engineering, Information Technology, Electronics & Communication, Electrical & Electronics Engineering, Mathematical Sciences, Science of Chemistry, Bio-Science Technologies, Earth Sciences, Geo-physics, and Remote Sensing). English and Arabic are the language used. All manuscript submissions must be made through the journal's online manuscript system at online submissions.
The visions, goals, and the mechanisms of our Journal is to publish scientific research sober in the areas of Applied and Pure Sciences and scientific research, scientific interest large to contribute to the development of various disciplines, which provides significant support to researchers in all scientific facilities to continue to support the development plans in Iraq.
Submitted papers will be reviewed by Technical Committees of the Journal. All submitted articles should report original, previously unpublished research results, experimental or theoretical, and will be peer-reviewed. Articles submitted to the journal should meet these criteria and must not be under consideration for publication elsewhere. Manuscripts should follow the style of the journal and are subject to both review and editing.

date of firist issue 2006
no.issue per year(4)
no.of issue published between 2006-2012 (12)issue



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Contact info

E-mail: kujss@uokirkuk.edu.iq
site: www.uokiruk.edu.iq/kujss

Table of content: 2013 volume:8 issue:4

Article
Determination of Uranium Concentration in Some Types of Cement Used in Nineveh Governorate Using CR-39 Detector
تحديد ت ا ركيز اليو ا رنيوم في أنواع من السمنت المستخدم في محافظة نينوى باستعمال كاشف CR-39

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Abstract

This study has been carried out on six samples of local and imported cement to determine concentrations of Rn-222 and U-238. The study showed that the minimum concentration of both Rn-222 and U-238 was in the cement of Hamam- AL Aleel with 17.9kBq.m-3( 15.93 Bq.kg-1 ) and 1.29 ppm respectively, while the maximum concentration was in the Turkish cement with 60.3kBq.m-3 ( 53.6 Bq.kg-1 ) and 4.342 ppm respectively. The obtained results were within the range of the allowed values and have no influence on the health and environment.

Keywords

Radon --- cement --- CR-39 --- Uranium. --- ردون --- سمنت --- CR-39 --- يو ا رنيوم.


Article
Natural Convection in a Vertical Rectangular Enclosure
الحمل الحر في حيز شاقولي مستطيل

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Abstract

In this paper an experimental work has been conducted to investigate the influence of heating the lower half and cooling the upper half of vertical surface of a rectangular enclosure on natural convection. The enclosure length is (100 cm) with a square cross section (10×10 cm). The tests are done for three mass flow rates (0, 0.003 and 0.03 kg/sec) and five heat fluxes (48, 187, 400, 706 and 1080 W/m2). The hottest region formed is observed at ( = 0.67) where the lowest Nux is found while the coldest region is observed at ( = 0.33) where the highest Nux is found. Increasing the water mass flow rate enhances the heat transfer. The same thing happens with increasing the heat flux. A correlation is found to relate Nu with Ra (Nu= 0.216 Ra1/4) for (4×105≤Ra≤4×106). Both the experimental results and the correlation found are compared with a previous work and fair agreement is found.


Article
Study of Relationship between Coalescence Efficiency and the Radius of droplets in Warm Clouds
د ا رسة العلاقة بين كفاءة الإلتحام وأنصاف أقطار القطي ا رت في الغيوم الدافئة

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Abstract

The study of collision and coalescence mechanism for water droplets in cloud has a large importance because its represented major process in formation rain in warm clouds . In this study the, the relationship between the efficiency of coalescence ( coa E ) and the radius of droplets in warm clouds had been studied by taking different radius of large droplets ( R ) ranged between (60 to 100m) with groups of small droplets ( r ) that has radius ranged by (5 to 20 m) because these values represented nearly the range of radius of droplets occurred in warm clouds . The results appears that coalescence efficiency proportional directly with the radius of large droplet and inversely proportional with radius of small droplet


Article
Synthesis of Some N1-Benzyl -6-(thio and alkyl or aryl thio) Uracil derivatives
تحضير بعض مشتقات N1 بن ا زيل 6 )ثايو والكايل أو ثايو ا ا ريل(يو ا رسيل الجديدة

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Abstract

New series of N1-Benzyl -6-(thio derivatives) Uracils have been prepared by reaction of 6-chloro uracil [F3] with benzyl chloride in dimethyl sulphoxide in presence of sodium carbonate to yield N1-Benzyl-6-chloro uracil [F4].Heating of [F4] in ethanol with thiourea and treated with sodium carbonate to yield N1-benzyl-6-marcapto uracil [F5].Alkylation's of compound [F5] with different reagents a new series of uracils were prepared (F7 –F17) .The structures of synthesized compounds were elucidated by using some spectroscopic methods (IR, 1HNMR


Article
Synthesis of acetylenic mercpto uracil derivatives
تحضير مشتقات مركبتو يو ا رسيل الأستيمينية

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Abstract

Research has included the preparation of compounds of acetylenic mercpto uracil compounds. And for the preparation of these derivatives requests 4 - chloro uracil (1) and can be obtained (1) easily from the reaction of 2,4,6 - trichloro Pyrimidin with a mixture of diethyl aniline and phosphorus oxide, trichloro POCl3, after it has been obtained for compound 4 - Mercpto uracil (2) of the reactant compound (1) Thio urea and reflux the mix in the presence of ethanol and then were treated compound (2)with Propagel bromide to obtain a compound (3) 4 - Propyl thiouracil. On the other reactant compound has (1) with a solution of Mercpto acetic acid (SHCH2COOH) in Sodium hydroxide to obtain compound (5) 2,6 - Dihydroxy-4-pyrimidinyl thio acetic acid and then were treated compound (5) with Propagel alcohol to get propaynyl (2,6-dihydroxy-4-pyrimidinyl thio acetate) (6). and for the preparation of Mannich reaction , Acetylenic compounds (3) and (6) were treated with paraformaldehyde in Isopropyl alcohol and the mixture was heated a bit, then added Secondary amine with Copper chloride with continuous heating to obtain derivatives 4a-e and 7a-e. The purpose of the preparation of these derivatives is to get a new uracil derivatives containing acetylenic amines possible to have a biological effectiveness


Article
A Gravity Survey and Data Interpretation of Tawke Structure (Iraqi Kurdistan Region)
مسح جذبي وتفسير المعطيات لتركيب طاوكي)أقميم كوردستان الع ا رق(

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Abstract

In this study 780 gravity measurements were conducted in the Tawke area along the paved and accessible unpaved roads. The obtained gravity data was subjected to the necessary corrections and analyses qualitatively and quantitatively. For that purpose the Bouguer anomaly map was transformed analytically to regional and residual fields. Moreover two profiles trending NS were limited to a 2-D gravity models. The main structural features of the studied area as are recognized utilizing two main lines of evidence, namely, geological map and geophysical interpretations have one distinctive trend; it is the E-W Taurus trend. The Bouguer map of the Tawke area shows gravity high in the central part. It trends E-W. It is indicative of the main anticline. Two gravity lows indicating the two synclines bounding the structure from north and south are clearly shown. Six faults are inferred from gravity data. When inferred faults and gravity lows and highs are plotted on the geological map they show good agreement. A considerable density contrast of 0.36 gm/cm3 was observed between the Jeribe, Ana, Pila Spi, and Avana formation group against Lower Bakhtiari, Upper Fars and Lower Fars formation group and used in the modeling of two profiles. One main positive and two negative features characterize these profiles. The positive anomaly represents Tawke Anticline, the south negative anomaly represents Khabore syncline and the other Zakho syncline. Geological model for profiles show that the Tawke Anticline is an asymmetrical Anticline producing a structural trap by tilting of the Miocene formations comprising sealing rocks (Fatha Formation) and reservoir rock represented by the Jeribe carbonates. Two small faults on the northern limb of Tawke Anticline have indications on the surface as seepages of oil.


Article
A non Monotone Line Search Method with VM Algorithm of 2nd Order Quazi-Newton Condition for Symmetric Non Linear Equation
طريقة خط بحث غير رتيب مع خوارزمية المتري المتغير )نيوتن كوازي( من المرتبة الثانية كل المعادلات المنتاظرة الغير الخطية

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Abstract

In this paper, we propose a new class of Quasi- Newton update based on the non monotone line search technique for solving non linear equation under suitable conditions the global convergence of the method is proved. Numerical experiments indicate that this new algorithm is practicable for the test problems.

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