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Article
Synthesis and Characterization of New Biodegradable Polymers and Study of Some Properties in Phosphate Buffers
تحضير وتشخيص بوليمرات متحللة احيائيا جديدة ودراسة بعض خواصها في محلول الفوسفات المنظم

Authors: Raheem J.M. رحيم جميل محيسن --- Ali K.S. علي غانم سوادي --- Husein N.Kh. حسين ناصر خلف
Journal: Iraqi Journal of Aquaculture المجلة العراقية للاستزراع المائي ISSN: 1812237X Year: 2009 Volume: 6 Issue: 1 Pages: 51-58
Publisher: Basrah University جامعة البصرة

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Abstract

Copolymers between polylactic acid and polyethylene glycol, also alganic acid and polyethylene glycol were synthesized and diisocynate (MDI) were prepared and characterized. Swelling behaviors and loss of weight of these polyurethanes were studied by immersion of the gels in various buffer solutions. Particularly the polyurethane foam showed the highest EWC (equilibrium water constant) in time-dependent and pH-dependent swelling.

تم تحضير بوليمرات مشتركة بولي اثيلين كلايكول مع بولي حامض اللاكتك وكذلك بولي اثيلين كلايكول مع حامض الالجينك وكذلك حضرت الرغوة الاسفنجية للبوليمرين مع المثيلين داي ايزوسيانيت. درس تاثير الدالة الحامضية والزمن للمحاليل المنظمة على كفاءة الرغوة في سحب الماء وكذلك على استقرارية الرغوة.

Keywords

copolymer --- hydrogels --- swelling.


Article
MEASUREMENTS OF SUCTION AND WATER CONTENT DURING SATURATION OF COMPACTED EXPANSIVE SOIL

Authors: Bushra Suhail Al-Busoda --- Hassan Obaid Abbase حسن عبيد
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2015 Volume: 8 Issue: 4 Pages: 100-109
Publisher: Diyala University جامعة ديالى

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Abstract

The change of climate gives fluctuation of water content in its result rain, evaporation, rising water ground level and evapotranspiration. The expansive soil will volume change and suction. This behavior can damage on construction structures especially, roads and light building. The phenomenon is very interesting to be researched, how far the effect of water content change and variation suction toward the behavior volumetric swelling expansive soil. This paper presents results of measurement of swell percent, water content and total and matric suction under gradual and controlled moisture intake using dial gages and filter paper .It was found that the suction decreases with increase water content. The results showed that the greater swelling the smaller total and matric suction. The study showed that approximately a linear relationship between the suction with water content.

ان تغير الطقس يؤثر على محتوى الماء نتيجة المطر وارتفاع الماء الجوفى والتبخر.نتيجة لهذه العوامل فان التربة الانتفاخية يتغير حجمها وامتصاصها للماء.هذا السلوك يحطم الابنية وخصوصا الطرق والابنية الخفيفة الوزن.من المفيد البحث بهذه المشكلة ومعرفة تاثير تغير المحتوى المائى والامتصاص على التغير الحجمى للتربة الانتفاخية.هذا البحث يقدم نتائج قياسات نسبة الانتفاخ والمحتوى المائى والامتصاص الكلى والجزئى تحت تسليط ماء باستخدام مقياس التشوه وورقة الترشيح .وجد ان مقدار المص يقل بازدياد المحتوى المائى وكذلك انه كلما كان الانتفاخ اكبر كلما مقدارالامتصاصالكلى والجزئى اقل.هذه الدراسة وجدت ان العلاقة خطية تقريبا بين الامتصاص والمحتوى المائى.

Keywords

Expansive Soil --- Suction --- swelling


Article
Improvement of Physical and Mechanical Properties of Iraqi Gypsum Using Resole Resin

Author: Atheer Alaa Abdulhussein
Journal: journal of kerbala university مجلة جامعة كربلاء ISSN: 18130410 Year: 2012 Volume: 10 Issue: 2 Pages: 211-220
Publisher: Kerbala University جامعة كربلاء

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Abstract

The objective of the present work is to improve physical and mechanical properties of local gypsum reinforced with Resole resin. The water-gypsum ratio was kept at 45% throughout all these experiments. The prepared composites show a clear improvement in impact, compression strength and modulus of elasticity while, the bending strength is reduced when the Resole resin proportion in gypsum was increased from 2.5 to 10%. The other objective of this study was to evaluate the water absorption of Resole –gypsum composite. From the experimental results it may be concluded that swelling % was reduced when the Resole percentage in gypsum- Resole composite was increased.

الهدف من العمل هو بتحسين الخواص الميكانيكية والفيزيائية للجبس المحلي المعزز براتنج الريسول. نسبة الماء الى الجبس ثبتت على نسبة 45% خلال جميع التجارب. النماذج المتراكبة المحضرة من راتنجResole)) مع الجبس حصل فيها تحسين ملحوض في قوة التصادم والانضغاط ومعامل المرونة في حين لوحظ هناك انخفاض في قوة الانحناء عندما تغيرت نسبة الريسول في الجبس من 2.5% الى 10% الهدف الاخر من هذه الدراسة هو تقييم امتصاص الماء من قبل متراكبات الجبس والريسول. من النتائج العملية ظهر بشكل واضح, ان درجة الانتفاخ تقل كلما ازدادت نسبة راتنج الريسول في متراكبات جبس-ريسول.


Article
Synthesis of polyamids from some of the medical drugs after the Insertion of 1,3,4-thiadiazole ring in their composition
تحضير بوليمرات الآمايدات من بعض العقاقير الطبية بعد إدخال حلقة 4,3,1- ثايادايازول في تركيبها

Authors: Malath Khalaf Rasheed ملاذ خلف رشيد --- Ali Lateef Hussein علي لطيف حسين
Journal: Tikrit Journal of Pure Science مجلة تكريت للعلوم الصرفة ISSN: 18131662 Year: 2017 Volume: 22 Issue: 12 Pages: 64-71
Publisher: Tikrit University جامعة تكريت

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Abstract

This search include preparation of polyamids Containing some of the medical drugs, by the polycondensathion method for amino-1,3,4-thiadiazole compounds with dicarboxylic acids (terephthalic acid and phthalic acid) in presence of triphenyl phosphite and by using domestic microwave oven. Electrical conductivity were determined by using electrical conductivity cell unit.The prepared compounds were characterized by UV/Vis (Ultraviolet/visible), IR (Infra-red) and 1H-NMR (Proton nuclear magnetic resonance) spectra in (d6-DMSO) Solvent ,in addition to using elemental analyses apparatus (C.H.N) for some prepared compounds.

تضمن هذا البحث تحضير بوليمرات الامايدات الحاوية على بعض العقاقير الطبية بطريقة التكاثف المتعدد لمركبات الامينو ثايادايازول الحاوية على العقاقير الطبية مع الحوامض ثنائية الكاربوكسيل (حامض التيرفثاليك وحامض الفثاليك) وبوجود ثلاثي فنيل فوسفيت (TPP) وباستخدام فرن المايكرويف, وتم قياس التوصيلية الكهربائية لهذه البوليمرات المحضرة باستخدام وحدة خلية التوصيل الكهربائي المصنعة محليا. شخصت المركبات المحضرة باستخدام التقنيات الطيفية طيف الأشعة فوق البنفسجية والمرئية (UV/Vis) وطيـــف الأشـــــعة تحـــت الحمـــراء (IR) وطيـــف الرنين النووي المغناطيســـي للبروتون 1H-NMR وباســـــتخدام مذيــــب (d6-DMSO), وتحليل العناصر (C.H.N) لبعض المركبات المحضرة.


Article
The efficacy of ibuprofen and naproxen on swelling following surgical removal of impacted mandibular third molar

Authors: Tahani A AL-SANDOOK --- Sabah M SAKA --- Harith H KASKOS
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2002 Volume: 2 Issue: 1 Pages: 43-49
Publisher: Mosul University جامعة الموصل

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Abstract

In a double blind study the effect of ibuprofen and naproxen on swelling following surgical removal of impacted mandibular molar (M3) was evaluated on (48) patients. The patients were divided into three groups according to medication given for each group. The postoperative swelling at the area of surgery was measured by two methods namely, computerized photography and conventional facebow. The measurements performed at day (2) and day (7) postoperatively. The results showed that both ibuprofen and naproxen not reduced the expected swelling significantly in day (2) post-operatively comparing to control placebo group, but significant difference was noticed between the effect of ibuprofen and control group in day (7) post-operatively.


Article
Evaluation of Ibuprofen, Clarithromycin and Suprax efficacy on swelling following apicectomy

Authors: Tahani A AL-SANDOOK --- Sabah M SAKA --- Raid M BASHEER
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2002 Volume: 2 Issue: 1 Pages: 140-150
Publisher: Mosul University جامعة الموصل

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Abstract

The effect of Suprax, Clarithromycin antibiotics and brufennonsteroidal anti-inflammatory drug on the postoperative swelling after apicectomy of one upper anterior teeth was evaluated on sixty eight patients suffering from chronic periapical lesion requiring apicectomy without retrograde filling. They were divided into (5) groups according to the type of medicament administered postoperatively.The patients were examined in the 2ndand 7thpostoperative day for evaluation of postoperative swelling that may occur in the upper lip after apicectomy. The evaluation has been made by measuring the lip thickness by Sliding ruler method,face bow method and computerized photographic method. The results showed that Brufen tablets proved better control for postoperative swelling, Clarithromycin tables, also produce significant reduction in the amount of swelling whereas Suprax capsules and paracetamol tablets produce no significant effect postoperative swelling compared to placebo.


Article
Effect of Annealing on the Crystallization of Poly Vinyl Chloride for Drug Delivery System

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Abstract

Poly vinyl alcohol has been studied for its ability to form crystallites by using annealing method. Semicrystalline films of poly vinyl alcohol (PVA) were prepared by casting 11.5 wt. % and 13 wt. % PVA aqueous solution onto glass slides at annealing temperature range 90 -120°C and duration time 15- 60 minute. This allowed the macromolecules to form crystallites, small regions of folded and compacted chains separated by amorphous regions where single PVA chain may pass through several of these crystallites. Degree of crystallinity of PVA films (hydrogels) was determined by method of density; on the other hand the swelling behavior was conducted by the determination of water uptake, wet degree of crystallinity, gel fraction and solubility. The results of PVA films showed that water uptake decreased with increasing temperature, time of annealing and PVA concentration, while degree of crystallinity increased, and gel fraction and solubility decreased with increasing temperature and time of annealing. The maximum dry and wet degree of crystallinity was 64% and 36% respectively at 120°C and 60 min.


Article
Factors associated with facial swelling severity following impacted lower third molar surgery: A prospective study

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Abstract

Background: The ultimate purpose of this prospective study is to estimate and measure swelling associated withsurgical extraction of impacted mandibular third molars in different four post-operative times and to identify the riskfactors associated with determination of their risk degree.Material and Methods: In this prospective cohort study 159 consecutive cases in which removal of impacted lowerthird molars in 107outpatients were evaluated. Five groups of variables have been studied which are regarded as apotential factor for swelling after mandibular third removal which will enable the surgeon to predict and counsel highrisk patients in order to offer a preventive strategy.Results: Facial measurements were carried out on 1st, 2nd days, 1st and 2nd week postoperatively to measure theswelling area in each time respectively The peak level of swelling was noted on the second post-operative day andsubside by seven days but in some cases the swelling was still in minor degree while in most patients it was zero byday 14.Conclusions: The degree of difficulty of the surgical extraction was the main indicators of risk factors for the swelling inall post-operative days because it involves all the other risk factors together


Article
Primary Hydatid Cyst of the Skeletal Muscles: A Rare Presentation of Cystic Echinococcosis

Author: Ali A. Ali.
Journal: Mustansiriya Medical Journal مجلة المستنصرية الطبية ISSN: 20701128 22274081 Year: 2013 Volume: 12 Issue: 2 Pages: 66-70
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Hydatid cysts of the liver and/or lung are commonly seen in surgical practice in endemic areas like Iraq. Primary or secondary skeletal muscle hydatidosis is rarely reported, even in endemic areas. This is a case report of a 51 year-old, otherwise healthy, man with a firm non-fluctuant cystic swelling in the right thigh that was painless and growing slowly over a period of six months. While ultrasound and magnetic resonance imaging suggested a multilocular cystic lesion, other investigations failed to confirm the diagnosis of muscular hydatid cysts, especially in the absence of a primary cyst in the more common organs. The lesion was initially considered a soft tissue tumor but intraoperative exploration revealed a hydatid cyst with daughter cysts, that was excised and the patient was treated with Albendazole for 1 month postoperatively. The patient developed a seroma that disappeared spontaneously. There was no recurrence for up to 4 months of follow-up. This report illustrates that echinococcal disease should be considered in the differential diagnosis of a cystic mass in any anatomic location, especially when it occurs in endemic areas.


Article
Geotechnical Properties of Expansive Soil Treated With Silica Fume
الخواص الجیوتكنیكیة للترب الأنتفاخیة المعالجة بمادة السیلیكا فوم

Author: Zeena Waleed S. Abbawi
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2013 Volume: 31 Issue: 17 Part (A) Engineering Pages: 3358-3370
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Problematic soils such as expansive soil are those clay soils which exhibitedsignificant volume changes as results of soil moisture variation, when a dry mass ofclay is allowed to absorb water, the effective size of particles increases and thereforethe clay mass swells. This type of soil, upon wetting and drying, causes sever damageto structures built on such soil.A treatment of swelling/shrinkage using silica fume was studied in this work. Thesoil selected for the present investigation classified as (CH) according to unified soilclassification system with liquid limit = 51% and plastic limit = 27%. Soil specimenswere mixed with various percentages of silica fume contents (10%, 20%, 25%, 30%and 50%) to determine their effects on geotechnical properties such as Atterberge’slimits, compaction, unconfined compression and swelling properties.The results show that the silica fume played an important role in improving theproblem of swelling behavior in expansive soil. The silica fume decrease liquid limitand changed compaction parameters of expansive soils the moisture content valuesincreased and the maximum dry unit weight values decrease. Also the silica fumeincreased unconfined compressive strength, decreased the compressibility and thevertical swelling percentages of clayey soil-silica fume mixtures.

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