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Article
EFFECT OF TYPE AND CONCENTRATION OF FLUID LUBRICANT ADDITIVE ON THE PROPERTIES OF GREASES
تأثير نوع وتركيز مائع التزييت على خواص الشحوم

Author: Dr. Muhannad A.R. Mohammed Zayneb Hyder Abood
Journal: Iraqi journal of mechanical and material engineering المجلة العراقية للهندسة الميكانيكية وهندسة المواد ISSN: 20761819 Year: 2014 Volume: 14 Issue: 2 Pages: 195-207
Publisher: Babylon University جامعة بابل

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Abstract

The main aim of this research is to study the effect of fluid lubricant on the properties of soap greases, such as lithium, calcium, sodium, and lithium – calcium.Base stock oils 40, 60, and 150 have been added with different concentrations to grease to obtain the best concentration that improves the properties of greases such as load carrying, wear resistance, corrosion resistance, drop point, and penetration.Decrease in grease properties has been noticed when adding 20 % of base sock oil 40, and 30 % of base stock oil 60, but no significant change being observed of base stock oil 150.Also, it is noticed that as the viscosity of base stock increases the effect of oil on changing grease properties will decrease.

ان الهدف الاساسي من هذا البحث هو دراسة تاثير نوع وتركيز مائع التزييت على خواص الشحوم الصابونية مثل شحم الليثيوم ، الكالسيوم ، الصوديوم ، وليثيوم – كالسيوم . تم اضافة ثلاث انواع من زيوت الاساس 40 , 60 , 150 بتراكيز مختلفة الى الشحوم لغرض الحصول على افضل النسب التي تحسن خواص الشحوم من حيث قابليتها على تحمل الضغط العالي ، مقاومة السوفان ، مقاومة التاكل ، درجة السقوط ، والنفاذية . وجد ان هنالك انخفاض في خواص الشحوم عند اضافتها بنسب 20% لزيت الاساس 40 ، 30% لزيت الاساس 60 ، وعدم ظهور تغير ملحوظ بالنسبة لزيت الاساس 150 .لوحظ بان زيادة لزوجة زيت الاساس سوف يقلل من تأثير زيت الاساس على خصائص الشحوم .


Article
Prevention of Postcircumcision Meatal Stenosis

Authors: Ehab Jasim Mohammad --- Mohammad Maher Al.Ani --- Abdulsattar Jubair Ali
Journal: Iraqi Academic Scientific Journal المجلة العراقية للاختصاصات الطبية ISSN: 16088360 Year: 2014 Volume: 13 Issue: 3 Pages: 365-369
Publisher: The Iraqi Borad for Medical Specialization المجلس العراقي للاختصاصات الطبية

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Abstract

ABSTRACT:BACKGROUND:Meatal stenosis is a condition that almost always is acquired after neonatal circumcision. Circumcision is one of the most common surgical operations throughout the world, and meatal stenosis is one its late complications. We evaluated the topical use of a lubricant jelly after circumcision in boys in order to reduce the risk of meatal stenosis.OBJECTIVE:To evaluate the use of lubricant in prevention of postcircumcision meatal stenosis and other complications.MATERIALS AND METHODS:From April 2010 to September 2012, 300 boys younger than 2 year old referred to AL-RAMADI TEACHING HOSPITAL IN ANBAR,IRAQ and my clinic, were involved in a randomized controlled trial. They were referred for circumcision. The parents in the study group were instructed to use petroleum jelly on the circumcision site after each diaper change for 6 months. In the control group, no topical medication was used. The children were followed up regularly and evaluated for meatal stenosis, bleeding, infection, and recovery time.RESULTS: Three hundred boys younger than 2 years old participated in the study. None of the children in the lubricant group developed meatal stenosis, while 91 (60.6%) in the control group developed postcircumcision meatal stenosis (P 0 .0000) which is statistically highly significant. Infection of the circumcision site was observed in 2 (1.3%) and 14 (9.3%) children of the lubricant and control groups, respectively (P 0 .0004) which is statistically highly significant . Two boys (1.3%) in the lubricant group and 29 (19.3%) in the control group had postcircumcision bleeding (P 0 .0007) which is statistically highly significant.Finally, the mean time of recovery in the lubricant group was 3.8 ± 1.2 days, while it was 6.9 ± 4.2 days in the control group (P = 0.03).CONCLUSION: Based on the findings of this study we can conclude that using petroleum jelly after circumcision is considerably effective for reducing postcircumcision meatal stenosis and other complications.

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