Study the Influence of Gas Pressure on the Tensile Behavior of TIG Stainless Steel Sheets

يمثل عمل هذا البحث دراسة تأثير استخدام ضغوط مختلفة لغاز الاركون على سلوك الشد لصفائح الفولاذ المقاوم للصدأ نوع (304) الملحومة بغاز التنجستن الخامل. استخدمت مديات مختلفة من ضغوط الغاز (13-15)كغم قوة/سم2وتيارات لحام (80-100) أمبيرلأيجاد تاثيراتها على خواص الشد الميكانيكية (0.2% اجهاد الخضوع، اجهاد الشد الاقصى والاستطالة) لوصلاتاللحام التناكبية.تم استخدام برنامج تصميم التجارب(DOE) (نسخة 10) لعمل مصفوفة التجارب. تم تطبيق منهجية الاستجابة السطحية (RSM) لأيجاد النماذج الرقمية للخواص الثلاثة والتي تم تحليلها بأستخدام تحليل التباين (ANOVA) للتحقق احصائيا" من ملائمة النماذج الناتجة. اظهرت النماذج التربيعية المستحصلة بمستوى ثقة (95%) بأن الزيادة في كل من ضغط الغاز والتيار بشكل منفصل ادت الى زيادة عالية في اجهاد الخضوع والاستطالة وكلاهما تناسب عكسيا"، بينما اعطى التأثير المشترك لهما القيم الادنى. كان لضغط الغاز تأثيرا كبيرا" على اجهاد الشد الاقصى من التيار.This research work represents the study of the effect of using different gas pressures of argon on the tensile behavior of tungsten inert gas (TIG) welded stainless steel sheets type (304). Different ranges of gas pressures (13-15 Kgf/cm2)and welding currents (80-100 Apm) were used to determine their influenceon the tensile mechanical properties (0.2% yield stress, ultimate tensile stress and elongation) of butt welded joints.Design of experiment (DOE) ‘version 10’ was used to establish the design matrix of experiments. Response surface methodology (RSM) technique was employed to obtain mathematical models for the three properties, which were analyzed by the analysis of variance (ANOVA) to verify statistically the adequacy of the resulted models. The resultant quadratic models with a confidence level of 95% revealed thatthe increase in both gas pressure and currentindividually results in a higher increase in the yield stress and elongation,and both were proportionated inversely,while their combined effect gave the lowest values.The gas pressure had a greater impact on the ultimate tensile stress than current. After numerical optimization, the maximum values of the mechanical properties were obtained with a maximum desirability value at the optimum values of gas pressure and current. Finally, confirmation tests were conducted at the optimum values of gas pressure and current to verify the validation of the maximum values of properties, and the error wasfound less than (4%) between the experimental and predicted results

A Review of Non-Operative Management of Anal Fissures in Pediatrics: A Study of 50 Cases at Alkarama Teaching Hospital

Anal fissure is a tear or break in the skin of the anal canal. whilst acute anal fissures heal spontaneously or with simple therapeutic measures, a proportion may progress to form a chronic anal fissure. The aim of this study is to show the efficacy of conservative therapy in management of anal fissures in pediatrics. A prospective study was conducted in alkarama teaching hospital  during a period from February 2014 to March 2015 for analyzing fifty cases of anal fissure in children & the effect of conservative treatment. A personal biodata, detailed history of diet, bowel habits, site of fissure & presentation, all were registered. Keywords: Anal fissure, Conservative Treatment, Proctocidar

Islamic finance: Meeting Global Aspirations and Growth Potential - UK Model

The purpose of this research is to describe the Islamic financial market and products, with particular emphasis on the growth of Islamic finance in the UK market. The analytical descriptive approach has been used because it will help to collect quantitative and qualitative data to answer the research question or test the research hypothesis. The results indicate that Islamic and traditional banks with the Islamic window promote investment in the UK through the financing of real estate, insurance services and financing of transport projects without interest charges on loans. (FSA) Encourage the Government to develop Islamic banking, develop market and demand, and develop Islamic finance products and services that contribute to the growth of Islamic banking services in the United Kingdom

Allelopathic effects for three plants extracts on weeds of wheat (Triticum aestivum L.)

An investigation was carried out to evaluate the allelopathic effects of aqueous extracts of Eucalyptus obligo, Chrysanthemum indicum and Eruca sativa on weeds of wheat in the research field of Kanan region, province of Diyala, Iraq during 2016-2017. A minimum number of weeds and Dry weight of weeds were significantly recorded (3.3 m-2, 15 g) respectively in Eruca sativa extract while maximum control of weeds % and inhibition of weeds % (71.2, 87.5%) were significantly recorded in Eruca sativa extract. Different yield components of wheat, such as crop height and 1000-grain weight showed maximum significantly difference 109.0 cm and 42.9 g respectively in Eucalyptus obligo whereas spike length, number of grains / spike, number of plants / m2 and grain yield revealed maximum significantly difference 11.8 cm, 52.6, 341and 1568 g respectively in Chrysanthemum indicum

Using of TLR2 and TLR4 as Biomarker of Sepsis Severity Detection

Our study has been aimed to find the relation between the expression of toll-like receptors 2, 4, level of TNF-α, IL-10 and soluble HLA-DR with the severity bacterial septic syndrome in Iraqi patients. The quantitative real-time PCR technique has been used for measure TLR2 and TLR4 gene expression in whole blood, and ELISA technique has been used for detection of cytokines TNF-α, IL-10 and soluble HLA-DR from 75 septic syndrome cases (nineteen of patients showed symptoms of systemic inflammatory response syndrome (SIRS); twenty-eight patients have sepsis, seventeen patients suffered from severe sepsis and eleven patients have septic shock) and 55 healthy controls (HC). TLR2 and TLR4 mRNA expression were higher significantly in the all patients (P< 0.05), TNF-α, IL-10 and sHLA-DR serum levels were significantly elevated in the serum of patients with septic syndrome compared with controls (

Study The effect of Microwave Furnace Heat Energy Effects On Mechanical Properties And Estimated Fatigue Life of AA2024-T3 and AA7075-T6

The research aims to make a comparison between two highly used aluminum alloy though studding the effects left by the microwave furnace wavelengths by (middle dry and amid aqueous solutions) on the mechanical properties and estimated fatigue life of highly resistant widely use aluminum alloy AA 7075-T6 and AA 2024-T3. Since the microwave effect differ from other heating methods through its effects (Heat Transfer) r heating methods effects on the surface of the alloy, which might change some of its properties as well as resistance to fatigue, also to see how this effect changes from alloy to another through this study. The results show some great effects on both mechanical properties and estimated fatigue life for both alloys but with different levels. This new technique is differing from other traditional heat treating ones that is simple, cheap and fast accurate method than the other techniques. There is a common misconception about the use of minerals in microwave ovens and the concept is unscientific and based on false grounds and simplest proof of that is that most of these ovens are built from the inside metal fully, how dangerous this is consistent? This research aims to focus on and remove those problematic and misconceptions

Risk Factors Associated With Hip Fractures among Adult People in Babylon City, Iraq

BACKGROUND: The fractures of hip joint considered as a serious problem in public health in the medical and socioeconomic issues, the incidence of the fracture neck femur is significantly increased with the increment of general population life span. AIM: The goal of this study is to highlight and focus on the most important risk factor for the hip fractures in our Babylon society, and to improve our understanding of the medical and social aspects of these predisposing factors. PATIENTS AND METHODS: A case-control study of older adults (above 60 years old). The study was done on tow samples. First, one consisting of 75 cases those having fracture neck femur considered as cases, and second sample as a control group, consisting of 150 people as a healthy control group having no fracture. A pre-tested questionnaire was prepared to collect data from both samples; the questionnaire included demographic data and information about potential risk factors of hip fracture. RESULTS: Most of the people in the study samples in both groups were, married women, housekeepers, illiterate and from urban dwellers. There was highly significant association between case-control groups regarding, Continuous using of medication such as cortisone which was found to be a potential risk factor of hip fracture (Unadjusted OR = 3.636), low income was positively associated risk factor of hip fracture in this study (OR = 2.377), low milk intake, low sun exposure, tobacco smoking were positively associated with this health problem (OR = 1.794), while physical exercise was protective factor (OR = 0.489). CONCLUSION: The highest risk factors associated with increased occurrence of hip fracture were using cortisone, Osteoporosis, tobacco smoking, consuming soft drinks, and less exposure to sunlight

Burnout among surgeons before and during the SARS-CoV-2 pandemic: an international survey

Background: SARS-CoV-2 pandemic has had many significant impacts within the surgical realm, and surgeons have been obligated to reconsider almost every aspect of daily clinical practice. Methods: This is a cross-sectional study reported in compliance with the CHERRIES guidelines and conducted through an online platform from June 14th to July 15th, 2020. The primary outcome was the burden of burnout during the pandemic indicated by the validated Shirom-Melamed Burnout Measure. Results: Nine hundred fifty-four surgeons completed the survey. The median length of practice was 10&nbsp;years; 78.2% included were male with a median age of 37&nbsp;years old, 39.5% were consultants, 68.9% were general surgeons, and 55.7% were affiliated with an academic institution. Overall, there was a significant increase in the mean burnout score during the pandemic; longer years of practice and older age were significantly associated with less burnout. There were significant reductions in the median number of outpatient visits, operated cases, on-call hours, emergency visits, and research work, so, 48.2% of respondents felt that the training resources were insufficient. The majority (81.3%) of respondents reported that their hospitals were included in the management of COVID-19, 66.5% felt their roles had been minimized; 41% were asked to assist in non-surgical medical practices, and 37.6% of respondents were included in COVID-19 management. Conclusions: There was a significant burnout among trainees. Almost all aspects of clinical and research activities were affected with a significant reduction in the volume of research, outpatient clinic visits, surgical procedures, on-call hours, and emergency cases hindering the training. Trial registration: The study was registered on clicaltrials.gov "NCT04433286" on 16/06/2020