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Article
Separation & Identification of Organic Compounds in Lubricating Oil Additives Using TLC & GC-MS

Authors: Hussein I. Khalaf --- Mohammed J. Mohammed Hassan --- Omer A. Hassan
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2012 Volume: 15 Issue: 3 Pages: 62-68
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Thin layer chromatography (TLC) and Gas Chromatography-Mass Spectrometry (GC-MS) techniques are proposed for qualitative analysis of lubricating oil additives (Hitec 2915). The additives were dissolved in heptanes, extracted with mixed solvents heptane: acetonitrile (3:2) and spotted on TLC paper. The best combination solvents as developer for TLC analysis were carbon tetrachloride: heptanes (9:1) mixture. Each separated streak was scraped, redissolved in acetonitrile and evaporated to 0.5 ml volume then analyzed by GC-MS for identification. Fourteen compounds[2-Ethyl-1-hexanol; 2-(t-butyl)-phenol; 2,4-bis-(t-butyl)-1-methoxy benzene; 2,6-bis-(t-Butyl)-2,5-cyclohexadiene-1,4-dione; 2,4-bis-(t-Butyl)-phenol; 3,5 - bis- (t-Butyl)-phenol; Decanoic acid methyl ester; Tridecanol; 1,1-Diphenyl hydrazine; 1,2-Benzene dicarboxylic acid dibutyle ester; S-Triazol 1, 5-A-pyridine 8-amino 2-phenyl; Phenol-2, 6-bis-(t-butyl); Phenol-2,5-bis-(t-butyl); Phenol - 2,4,6-Tris-(t-butyl)]were identified in this study. The mass spectral data obtained for each separated compound were compared with the standard spectral data (library search similarity) of each compound.

تم في هذه الدراسة استخدام تقنية كرواتوغرافيا الطبقة الرقيقة و كروماتوغرافيا الغاز – مطيافية الكتلة للتحليل النوعي لمضافات دهون التزييت وتطبيقه على نموذج (Hitec 2915). اذيب نموذج الزيت المختار في مذيب الهيبتان و استخلص باستخدام مزيج من مذيبات الهيبتان والاسيتونتريل بنسبة (3:2) وعينات من المستخلص تم فصلها باستخدام كروماتوغرافيا الطبقة الرقيقة باستخدام مزيج من مذيبي رابع كلوريد الكاربون والهبتان بنسبة (9:1). تم قشط المناطق المفصولة واذابتها في مذيب الاسيتونتريل و بخر الى حجم 0.5 مللتر و شخصت النواتج باستخدام تقنية (GC-MS). حيث بينت النتائج وجود (14) مركب عضوي:


Article
Evaluation of plateletpheresis procedure in blood component separation unit of Bone Marrow Transplant Center
تقييم اجراء فصل الاقراص الدموية بطريقة أفريسز فى وحدة فصل مكونات الدم فى مركز زرع نخاع العظم

Authors: Waleed Abdelazez د.وليد عبد العزيز عمر --- Omer Amel Amen Ali د.امل امين على
Journal: IRAQI JOURNALOF COMMUNITY MEDICINE المجلة العراقية لطب المجتمع ISSN: 16845382 Year: 2007 Volume: 20 Issue: 2 Pages: 360-362
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

AbstractBackground: Platelet concentrate can be harvested by apheresis using blood cell separator. In this study; plateletpheresis was evaluated , regarding the safety and clinical effect of the procedure , and quality of the product Methods: The study carried out in blood separation unit of Bone Marrow Transplant Center (BMTC) in Children Welfare Teaching Hospital using blood cell separator. The donors selected according to the criteria for whole blood donor selection with limited clinical examination. Hb estimation, WBC counting and platelets counting were carried out on the donors , pre and post donation , and platelets counted in the product. Results: The results reflect the safety of the procedure; there were no significant clinical changes between pre and post donation regarding pulse rate, blood pressure and temperature, beside that there were no significant changes in Hb concentration and WBC count between pre and post donation , while the drop in platelet count of the donors after donation was of no clinical effect. Only 30% of donors show numbness around mouth . Regarding the quality of the product, 20% of platelet units contain more than 3x1011 platelets, while the other units contain less than that slightly. Conclusion: The procedure of platelet pheresis in blood separation unit of BMTC was safe and effective in harvesting platelet from platelet donors in short time.Key Words: Plateletpheresis , platelet concentrate , blood components separation unit

الملخص:أساس البحث: يمكن جمع مركز الاقراص باستخدام جهاز فصل خلايا الدم.فى هذه الدراسة ، تم تقييم اجراء استخراج الاقراص بطريقة افريسز ، اخذين بنظر الاعتبار مأمونية الاجراء والتغيرات السريرية، اضافة الى تقييم جودة المنتوج. الطرائق: اجريت هذه الدراسة فى وحدة فصل مكونات الدم فى مركز زرع نخاع العظم فى مستشفى حماية الاطفال التعليمى , باستخدام جهاز فصل خلايا الدم .كان انتقاء المتبرعين وفقا لضوابط انتقاء متبرعى الدم , مع اجراء فحص سريري محدود . كما اجريت فحوص خضاب الدم وتعداد كريات الدم البيض وتعداد الاقراص الدموية , قبل , وبعد التبرع . كذلك تم اجراء فحص تعداد الاقراص الدموية فى المنتوج .النتائج: النتائج تعكس مأمونية اجرات استخراج الاقراص الدموية ، حيث لم يطرأ تغير ذو أهمية سريرية قبل وبعد التبرع فيما يخص معدل النبض وضغط الدم ودرجة حرارة الجسم . يضاف الى ذلك , لم يطرا تغير ذو اهمية احصائية فى تركيز خضاب الدم وتعداد كريات الدم البيض ، قبل وبعد التبرع . أما بخصوص انخفاض الاقراص بعد التبرع ، فلم يكن له اهمية سريرية.بعض المتبرعين (30%) شعروا ب(تنمّل) حول الفم. بخصوص جودة المنتوج ، فقد كان 20% من الوحدات المنتجة تحتوى على عدد من الاقراص أكثر من 3X10 11، لكل وحدة ، بينما باقى الوحدات تحتوى على أقل من ذلك بقليل .الاستنتاج: اجرات استخلراج الاقراص من الدم بطريقة أفريسز فى مركز زرع نخاع العظم هو اجراء مأمون وفعال فى جمع الاقراص من المتبرعين فى وقت قصير


Article
Study the Behavior of Long Spiral Tube Adsorber for Oxygen Separation from Air
دراسة تصرف انبوب الامتزاز الملفوف الطویل لفصل الاوكسجین من الھواء

Authors: Zaid A. Abdel-Rahman --- Abdulbasit H. Mhdi --- Ahmed J. Ali
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2013 Volume: 31 Issue: 17 Part (A) Engineering Pages: 3371-3381
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Single long spiral tube column (25 mm diameter, and 4 m bed length) had beenconstructed to study the separation of oxygen from air using commercial 13Xzeolite. The effect of adsorption pressure on the system breakthrough curves wasstudied. Single column with initial air pressurizing simulates the work of 2-columns, 4-steps PSA process, whereas single column with initial intermediatepure oxygen pressurizing simulates the work of 2-columns, 6-steps PSA processwith pressure equalization steps of the two columns. No significant effect ofpressure on the product oxygen purity is noticed when pressure increased from 2 to5 bar in both cases.For initial air pressurizing case, the average maximum effluent oxygen purity of88% is obtained. The range of zeolite loading capacity is q=0.25-0.35 mole N2/kgzeolite, and only 40% of the range has been utilized before breakthrough time.Whereas for initial oxygen pressurizing case, the maximum oxygen purity of 95%is obtained. The range of zeolite loading capacity is q=0.39-0.87 mole N2/kgzeolite, and 95% of the range has been utilized before breakthrough time, whichagree well with the equilibrium data of multicomponent Langmuir adsorptionequation.


Article
The impact of separation and interfaces in significance Quranic ((Cave a model))
اثر الفصل والوصل في الدلالة القرآنية (( سورة الكهف انموذجاً ))

Authors: Taleb A Nief' طالب عويد نايف الشمري --- Ahmed Batal Wasseg أحمد بطل وسيج الموسوي
Journal: Mustansiriyah Journal of Arts مجلة آداب المستنصرية ISSN: 02581086 Year: 2015 Issue: 69 Pages: 1-25
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The eloquence important role in bring out the significance of the Qur'an at its best is the subject of this science Massadik Chapter interfaces as the impact of the separation of the camel through the Quranic and connecting them.Spacers between the strings contained in Sura Quranic achieved connotations intended from behind the Quranic text and represent it in the positions which we have in the search, including the position of said transitions of centuries between places and diverse demands in order to provide benefit to the people, as if a link between those sentences to check intended meaning It turned out commands to the descriptions of places unchanged if the sentences of news.As well as the focal role played by linking sentences of news and construction as well as the actual sentences that indicate the regenerative nominal and phrases that indicate the stability and other things that we divorce in the research and its results.

للبلاغة دور مهم في اخراج الدلالة القرآنية في أبهى صورها ومن موضوعات هذا العلم موضوع الفصل والوصل اذ أثّر ذلك من خلال فصل الجمل القرآنية ووصلها .فقد حققت الفواصل الموجودة بين الجمل الواردة في السورة القرآنية الدلالات المقصودة من وراء النص القرآني وتمثل ذلك في المواضع التي أشرنا لها في البحث منها موضع ذكر انتقالات ذي القرنين بين الاماكن وطلباته المتنوعة من اجل ان يُقدّم الفائدة للناس اذ لو وصل بين تلك الجمل لما تحقق المعنى المراد ولتحولت الاوامر الى اوصاف حالها حال اماكن الجمل الخبرية .وكذلك الوصل اذ لعب دوره من خلال الربط بين الجمل الخبرية والإنشائية وكذلك الجمل الفعلية التي تدل على التجدد والجمل الاسمية التي تدل على الثبات وغير ذلك مما فصلناه في البحث ونتائجه .


Article
O-C TOPOLOGY AND SIERPINSKI SPACE

Author: Ali Karim Lelo
Journal: Journal of Al-Qadisiyah for Computer Science and Mathematics مجلة القادسية لعلوم الحاسوب والرياضيات ISSN: 20740204 / 25213504 Year: 2015 Volume: 7 Issue: 1 Pages: 85-89
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

In this paper we choose a different approach and propose a generalization of Sierpinskispace by defining a topology analogous to Sierpinski topology with the generalcollection which is form a topology on a non empty set  ,and the definition of K.Khan [5] will be only special case , so the ( O-C topology) is introduced . Weinvestigate some of the general topological characterization of it , and this has a veryinteresting applications especially the Sierpinskispace whichisresult from the finite setwhich containing only two points .


Article
Radiological Assessment and Mechanical Separation of NORM Contaminated Soil from Iraqi Oil Fields

Authors: Yousif M. Zayir --- Nada. S. Ahmedzeki --- Takrid M. Nafae --- Wssam Zaidan --- et al.
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2016 Volume: 17 Issue: 2 Pages: 25-35
Publisher: Baghdad University جامعة بغداد

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Abstract

Naturally occurring radioactive materials (NORM) contaminated sites at Al-Rumaila Iraqi oil fields have been characterized as a part of soil remediation project. Activity of radium isotopes in contaminated soil have been determined using gamma spectrometer High Purity Germanium detector (HPGe) and found to be very high for Al-Markezia, Al-Qurainat degassing stations and storage area at Khadhir Almay region. The activity concentration of samples ranges from 6474.11±563.8 Bq/kg to 1232.5±60.9 Bq/kg with mean value of 3853.3 Bq/kg for 226Ra, 843.59±8.39 Bq/kg to 302.2±9.2 Bq/kg with mean value of 572.9 Bq/kg for 232Th and 294.31±18.56 Bq/kg to 156.64±18.1 Bq/kg with mean value of 225.5 for 40K. Six hazard indexs radium equivalent, representative level index, adsorbed dose rate in air, annual effective dose equivalent, external hazard index, and internal hazard indexes were calculated to estimate the potential radiological health risk in soil and dose rate associated with it and found to be high. Screening of contaminated soil was performed to evaluate the feasibility of particle size separation. The fractions obtained varied between 75 µm (200 mesh) to 300µm (48 mesh).The results show that the largest weight percent in fine particle size cut ( -75, -125+75, -250+125) µm is 73.9% and all radium isotopes are concentrated in 37.5µm particle size while small fluctuations are observed in the other particle size cuts.


Article
ENHANCEMENT PERFORMANCE OF WIND TURBINE BLADE BY COMPARISON STUDY OF SUCTION AND BLOWING TECHNIQUESUSING SEP METHOD
تحسين الاداء لزعنفة التوربين الهوائي بواسطة دراسة مقارنة لتقنيات الشفط والنفخ باستخدام طريقة SEP

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Abstract

In this work a new concept of flow separation control mechanism has been introduced to improve the aerodynamic characteristics of an airfoil. Control of flow separation over an airfoil at low Reynolds number is theoretically simulated under the effects of suction and blowing, based on the computation of Reynolds-average Navier-Stocks equations(the solution of each set of equations is achieved by application of the SEP(strong explicit procedure)solver) is carried out. Using Finite Volume Method to solve the governing equations on a body, so, a numerical model is developed. The suction and blowing control mechanism appears to be suppression of the separation bubble and reduction of the upper surface pressure to increase the lift and decrease the drag. To make section model, NACA 4421 airfoil has been chosen. In present study, the theoretical are performed with different angle of attack (20º, 22º, 23º), Uj/U (A) =6 and different chord (1c,0.9c,0.8c,0.7c). The theoretical results show that the flow separation control is possible by the proposed mechanism and benefits can be achieved by suction and blowing (for suction position at the end of the chord (0.8c) and for blowing position at the begging of the chord (0.1c)). The section performance is significantly improved due to control of flow separation by suction and blowing. It has also been found that the lift increases about 14% at the angle of attack 20º, 22ºand 23º and seen that the blowing is better than the suction.

في هذا العمل تم إدخال مفهوم جديد لألية السيطرة على انفصال الهواء وتحسين الخصائص الايروديناميكية على نموذج مطيار. السيطرة على انفصال الهواء حول المطيار بعدد رينولدز منخفض قد تم نظريا تحقيقه تحت تأثير الشفط والنفخ، اعتمادا على حسابات معدل رينولدز في معادلة نافيير – ستوك (وقد تم حل كل مجموعة من المعادلات بتطبيق السياق الضمني الشديد(SEP)).ولحل المعادلات الحاكمة لشبكة توافق الاجسام تم تطوير نموذج رياضي عددي باستخدام تقنية الحجوم المحددة .ان آلية السيطرة عن طريق الشفط والنفخ تظهر إخماد فقاعات الانفصال والتي تؤدي الى تقليل الضغط على السطح العلوي للجناح لزيادة الرفع وتقليل الكبح . اجريت دراسة حسابية على مقطع المطيار 4421 NACA اختير كموديل. تم اعتماد في الدراسة الحالية زواية هجوم مختلفة (20º, 22º, 23º ) وUj/U (A) =6 وبأطوال اوتار مختلفة(1c,0.9c,0.8c,0.7c).بينت النتائج النظرية التي تم الحصول عليها بان السيطرة على انفصال الهواء ممكنة بواسطة الية الشفط والنفخ (موقع الشفط يكون في نهاية الوتر(0.8c) و موقع النفخ في بداية الوتر(0.1c)).تم تحسين اداء المطيار بشكل ملحوظ بسبب السيطرة على انفصال الهواء بواسطة الشفط والنفخ. وقد وجد أيضا ان الرفع يزداد حوالي14٪ في زاوية الهجوم(20º, 22º, 23º ).وبينت ان عملية النفخ هو افضل من عملية الشفط .


Article
Foreground Object Detection and Separation Based on Region Contrast

Author: Samera Shams Hussein
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2017 Volume: 58 Issue: 4A Pages: 1963-1969
Publisher: Baghdad University جامعة بغداد

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Abstract

Foreground object detection is one of the major important tasks in the field of computer vision which attempt to discover important objects in still image or image sequences or locate related targets from the scene. Foreground objects detection is very important for several approaches like object recognition, surveillance, image annotation, and image retrieval, etc. In this work, a proposed method has been presented for detection and separation foreground object from image or video in both of moving and stable targets. Comparisons with general foreground detectors such as background subtraction techniques our approach are able to detect important target for case the target is moving or not and can separate foreground object with high details.


Article
CONCENTRATING OF FELDSPAR FROM Al-SAMAWA SAND DUNE

Author: Waleed R. Abdullah
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2018 Volume: 22 Issue: 4 Pages: 202-210
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This study was carried out to determine the possibility of upgrading feldspar from Al-Samawa sand dune deposit containing about 2 % Na2O and 1 % K2O. Two samples from the same location was tested by screening, employing, washing and disliming followed by magnetic separation then froth flotation by tallow amine acetate as a collector with poly propylene glycol and Ethyl diamine tetracetate (EDTA). The experimental results shows that a concentrate of commercial grade can be obtained in percent 5.54 % Na2O and 2.41 % K2O with a recovery of about 76.2 % and 77


Article
Studying the effect of Cyclone’s dimensions on the separation efficiency of wheat using computational fluid dynamics method

Authors: Javad Janatkhah --- Gholam hossein Shahgholi
Journal: Kufa Journal for Agricultural Sciences مجلة الكوفة للعلوم الزراعية ISSN: 20727798 23128186 Year: 2018 Volume: 10 Issue: 4 Pages: 46-73
Publisher: University of Kufa جامعة الكوفة

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Abstract

Cyclone is one of the most important components of pneumatic conveying system which is used for separating particles from gas stream. A CFD study was conducted to investigate the effect of Cyclone’s dimensions on its efficiency during wheat separation process. The main aim was alignment of the particles from different parts of the input and understanding the movement and separation of wheat particles. Cyclone type was high efficiency Stair and. It was designed in Solid works 2010 and meshed using Gambit software. In Fluent software based on a comparison with experimental results, the second order Reynolds stress model (RSM) was selected as the most appropriate method to model cyclone separation performance. It was found that at ratio of De/D=0.45 resulted high collection efficiency for particle size less than 4mm. In general at high 0.5 the separation efficiency for small seeds (d<4mm) was significantly less in comparison with the other ratios. Results showed that for wheat grains with approximate size of 3 mm and more, the ratio of h/d= 0.75 was the most appropriate option. However, for seeds size less than 3 mm h/d=0.5 was more appropriate. Considering the numerical results of this study, it was found that the smaller outlet diameter cyclone has a high collecting efficiency in comparison with large diameter cyclones.

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