Recurrence Relations for Moments of Dual Generalized Order Statistics from Weibull Gamma Distribution and Its Characterizations

In this paper, we establish explicit forms and new recurrence relations satisfied by the single and product moments of dual generalized order statistics from Weibull gamma distribution (WGD). The results include as particular cases the relations for moments of reversed order statistics and lower records.We present characterizations ofWGD based on (i) recurrence relation for single moments, (ii) truncated moments of certain function of the variable and (iii) hazrad function

Assessing the performance of insulating fluids via point of statistical inference view

In this paper, the statistical inference is used in order to study the performance or aging of the insulating fluids. Transformer oil is used as an example of insulating fluids. The insulation property of insulating oil or transformer oil is lost by consumption. Breakdown tests are performed to check oil’s efficiency, but the cost of these tests is not inexpensive. Hence this statistical study aims to reduce the cost of these tests by applying statistical inference approaches to censored data. The Type-II Gumbel distribution fits well real-life data which contains failure times to breakdown of an insulating fluid between electrodes. The Type-II hybrid censored scheme is proposed to assess the study and also to reduce the cost of breakdown tests in practical tests.Publisher's Versio

Nonlinear Analysis of Circular Plates on Nonlinear Foundation

Galerkin\u27s procedure and the modified energy expression of Banerjee are used to obtain the central deflection of circular plates with linearly varying thicknesses, resting on a linear as well as a nonlinear elastic foundation. A new series formula for the deflection has been considered. The accuracy of the method has been tested for clamped plates with movable and immovable ends under uniform static patch loading. Graphical results are drawn for the central deflection for different end conditions, different plate thicknesses and different foundation properties. Comparison of the results are made with other known results and shows a good agreement in most tested cases

Is Helicobacter Pylori Associated with a Migraine?

Objective: To determine whether Helicobacter pylori (H. pylori) is associated with migraine headache. Design: Case-control study. Settings: Local tertiary Hospitals in Cairo, Egypt and in HaferAlbaten, Saudi Arabia. Participants: A total of 70 patients with migraine who were 7 to 17 years old and who fulfilled the International Headache Society criteria for migraine and a total of 50 controls without migraine who were matched by the country of origin, age, sex, ethnicity, and socioeconomic status to the 70 migraine cases. Main Outcome Measures: Antibody levels to H. pylori (IgG) and H. pylori stool antigens were compared between the two groups. Results: Significant association was found between H. pylori and migraine and of the total of 70 migraineur cases, 55.7% were positive for H. pylori stool antigen testing compared to 20% in control group (P value=0.0002). Joint pain was reported in 44.3% and 18.0% of cases and controls respectively (P value=0.0034). Conclusion: H. pylori is associated with migraine without aura and may be a causative factor. Moreover, H. pylori may induce joint pain in the migraineur patients

Glucosinolates, Glycosidically Bound Volatiles and Antimicrobial Activity of Brassica oleraceae Var. Botrytis, (Soultany Cultivar)

Background: Egyptian cauliflower Brassica oleracea, L. var. Botrytis L. Soultany cultivar, is an important edible plant in Mediterranean countries. Only a few researches were focused on antimicrobial activity of its volatiles and glucosinolates. Objective: To evaluate the antimicrobial activity of volatiles and glucosinolates of Egyptian Cauliflower and identify them by GC/MS and HPLC/MS designs. Materials and Methods: The semi-volatile and volatile constituents of were extracted by hydrodistillation from leaves, stems and inflorescences, using a Likens –Nickerson-type apparatus. The extracts from fresh and frozen vegetables were investigated by GC/MS and HPLC/MS. the volatile samples containing glucosinolate degradation products were evaluated for antimicrobial activity using the disc diffusion method. Results: From the fresh leaves extract, a total of 49 compounds were identified, representing 98.79% of the oil. The major constituent was found to be hex-3(Z)-enol (18.86%). From fresh disrupted inflorescence tissues of Egyptian cauliflower 45 compounds were detected, representing 93.37% of the extract. Nonacosane and 11-methoxy   benz(a)anthracene-7,12-dione   were   identified  as  major constituents   of   the hydrodistillation products, representing, respectively, 17.7 and 8.31% of the volatiles.   From frozen inflorescence tissues, dimethyl trisulfide and butylated hydroxy toluene were detected as predominant components representing 15.88 and 9.69% respectively. In the latter, hex-3(Z)-enol was not found to be the major constituent as happened in fresh leaves, but representing 3.88%. From fresh stem tissues, dimethyl trisulphide was detected as major constituent representing a percentage (24.06%) more than present in frozen inflorescence tissues. Twenty two compounds were identified by triple quad HPLC/MS. Volatile samples expressed a wide range of growth inhibition activity against both Gram-positive and Gram-negative bacteria and fungi, showing the highest inhibitory effects against E .coli and K. pneumonia strains. Conclusion: Hydrodistilled compounds present in the stems, leaves and inflorescence tissues of this cultivar has a highly promising antimicrobial activity. Keywords: Cauliflower, Brassica oleraceae, Glucosinolates, GC/MS, HPLC/MS, Antimicrobial activity.

Effects of soil amendment treatments on growth, yield and fruit quality of selected banana (Musa AAA) cultivars

       Banana cultivation in Sudan is restricted to the narrow strip of silt deposits along the banks of the Blue Nile and the River Nile. Hence, there is a need to expand banana cultivation in the high terrace, heavy clay soils. Banana performance in heavy clay soils is very poor, unless soil amendments are applied. Therefore, the objective of this research was to study the effects of soil amendment treatments on growth, yield and fruit quality of selected banana cultivars. The experiment was conducted in the Research Farm of the National Institute for the Promotion of Horticultural Exports, University of Gezira, during 2009-2011. Treatments consisted of three selected banana cultivars : Two introduced cultivars, namely, Grand Nain 1824 (GN) and William’s Hybrid 172 (WH) and the local cultivar Dwarf Cavendish (DC). Soil amendment treatments were : 1, 50% heavy clay (HC) + 50% loam (L); 2, 50% HC + 50% chicken manure (CM); 3, 50% HC + 25% L + 25% CM; 4, 33% HC + 33% L + 34% CM; 5, 100% HC (control). Treatments were arranged in a randomized complete block design with three replicates. Results showed that the introduced cultivars GN and WH had more vigorous vegetative growth, higher yield components, total yield and better fruit quality than the local cultivar DC. Soil amendment treatments of 50% HC + 25% L + 25% CM and 33% HC + 33% L + 34% CM resulted in the most vigorous vegetative growth, the highest yield components and total yield and the best fruit quality, followed by 50% HC + 50% L and 50% HC +50%CM, whereas the least vegetative growth, the lowest yield components, total yield and the worst fruit quality were produced by bananas grown in 100% HC (control). In order to expand banana production for the local market and export, it is recommended to amend heavy clay soils with loams and chicken manure at 33% each and grow the introduced cultivars GN and WH.      تنحصر زراعة الموز في السودان على الشريط الضيق للتربة الغرينية على ضفاف النيل الأزرق ونهر النيل. هنالك حاجة ماسة للتوسع في زراعة الموز في السودان ولذلك لا بد من محاولة زراعته في الاراضي الطينية الثقيلة و التي لا تصلح لزراعة الموز إلا إذا تمت بعض المعالجات. لذلك فإن الهدف من هذا البحث هو دراسة تأثير بعض مستصلحات التربة على النمو ومكونات الإنتاج والإنتاج الكلي لثلاثة أصناف منتخبة من الموز في هذا النوع من الأراضي. أجريت التجربة في مزرعة بحوث المعهد القومي لتنمية الصادرات البستانية بجامعة الجزيرة خلال الفترة 2009-2011. اشتملت المعاملات على ثلاثة أصناف منتخبة من الموز: صنفان مستجلبان من خارج السودان وهما جراندنين 1824 (GN) وهجين وليامز172 (WH) بالإضافة إلى الصنف المحلي الكافندش القزم (DC). إشتملت مستصلحات التربة على: (1) 50% تربة طينية ثقيلة + 50% تربة غرينية ، (2) 50% تربة طينية + 50% ماروق دواجن ، (3) 50% تربة طينية + 25% تربة غرينية + 25% ماروق دواجن، (4) 33% تربة طينية + 33% تربة غرينية + 34% ماروق دواجن ، (5) 100% تربة طينية (شاهد). أستخدم تصميم القطع العشوائية الكاملة  بثلاثة مكررات . أظهرت النتائج أن الأصناف المستجلبة من الخارج GN وWH كانت أفضل في النمو الخضري وأعلى إنتاجية وأفضل جودة للثمار من الصنف المحلي DC. معاملات مستصلحات التربة 50% تربة طينية + 25% تربة غرينية + 25% ماروق دواجن و 33% تربة طينية و33% تربة غرينية و34% ماروق دواجن أعطت أفضل نمو خضري وأعلى إنتاجية وأفضل نوعية للثمار ، تليها المعاملات 50% تربة طينية + 50% تربة غرينية و50% تربة طينية + 50% ماروق دواجن. أما زراعة الموز في الأراضي الطينية الثقيلة بدون مستصلحات أدت  إلى أقل نمو خضري وأقل إنتاجية وأدنى نوعية للثمار. لذلك لكي يتم التوسع في زراعة الموز فى الاراضى الطينية الثقيلة للسوق المحلي والتصدير ، فإنه يوصى بإضافة  التربة الغرينية و ماروق الدواجن بنسبة 33% لكل منهما وزراعة الأصناف المستجلبة GN و WH. &nbsp

Factors affecting mental fitness for work in a sample of mentally ill patients

<p>Abstract</p> <p>Background</p> <p>Mental fitness for work is the ability of workers to perform their work without risks for themselves or others. Mental fitness was a neglected area of practice and research. Mental ill health at work seems to be rising as a cause of disablement. Psychiatrists who may have had no experience in relating mental health to working conditions are increasingly being asked to undertake these examinations. This research was done to explore the relationship of mental ill health and fitness to work and to recognize the differences between fit and unfit mentally ill patients.</p> <p>Methods</p> <p>This study was cross sectional one. All cases referred to Al-Amal complex for assessment of mental fitness during a period of 12 months were included. Data collected included demographic and clinical characteristics, characteristics of the work environment and data about performance at work. All data was subjected to statistical analysis.</p> <p>Results</p> <p>Total number of cases was 116, the mean age was 34.5 ± 1.4. Females were 35.3% of cases. The highly educated patients constitute 50.8% of cases. The decision of the committee was fit for regular work for 52.5%, unfit for 19.8% and modified work for 27.7%. The decision was appreciated only by 29.3% of cases. There were significant differences between fit, unfit and modified work groups. The fit group had higher level of education, less duration of illness, and better performance at work. Patients of the modified work group had more physical hazards in work environment and had more work shift and more frequent diagnosis of substance abuse. The unfit group had more duration of illness, more frequent hospitalizations, less productivity, and more diagnosis of schizophrenia.</p> <p>Conclusion</p> <p>There are many factors affecting the mental fitness the most important are the characteristics of work environment and the most serious is the overall safety of patient to self and others. A lot of ethical and legal issues should be kept in mind during such assessment as patient's rights, society's rights, and the laws applied to unfit people.</p