Effects of Heat Transfer on the Stagnation Flow of a Third-Order Fluid over a Shrinking Sheet

This paper is devoted to the study of a stagnation point flow of an incompressible third-order fluid towards a shrinking sheet (with heat transfer). The governing nonlinear partial differential equations are reduced into nonlinear ordinary differential equations by means of a similarity transformation and then solved by the homotopy analysis method. Two types of flow problems, namely, (i) two dimensional stagnation flow toward a shrinking sheet and (ii) axisymmetric stagnation flow towards an axisymmetric shrinking surface have been discussed. Also, two types of boundary conditions are taken into account: (i) prescribed surface temperature (PST) and (ii) prescribed heat flux (PHF) case. The effects of various emerging parameters of non-Newtonian fluid have been investigated in detail and shown pictorically. The convergence of the solutions have been discussed through h-curves and residual error. For further validity, the homotopy Pade approximation is also applied

Omental Infarction In A Child

Omental infarction is a rare cause of acute abdomen in children. Typical findings on imaging establish the diagnosis. We present case of a 7 years old boy who presented with acute right iliac fossa pain with diagnosis of omental infarction on imaging and findings confirmed on laparotomy. Sound knowledge regarding this infrequent cause of acute abdomen in children is necessary for timely diagnosis

Ribavirin Induced Hemolytic Anemia In Patients Infected With Chronic Hepatitis C Virus

Objective: The objective of this study was to determine the ribavirin-induced hemolytic anemia in patients infected by chronic hepatitis c virus.Study Design: Descriptive Case series study.Place and Duration:  Gastroenterology Unit, Isra University Hospital, Hyderabad from 15-10-2014 to 15-04-2015.Methodology: Total 102 patients were included. Complete and relevant gastrointestinal and systemic examination was performed with special emphasis on anemia and its manifestations. Every patient was tested with hepatitis C antibodies, (HCV RNA PCR positive), pre-treatment hemoglobin levels, and at twelve weeks, twenty-four weeks, and at forty-eight weeks of ribavirin treatment and documented on structured questionnaire. The laboratory data were also collected by the researcher and pathologist. Hemoglobin levels were checked before and after start of ribavirin at 12 weeks 24, and 48 weeks.Results: The patient’s mean age was 41.68±11.91 years. 41.18% of patients diagnosed with hemolytic anemia. A significant proportion of hemolytic anemia was observed in middle-aged group (34–48years), P–value 0.033. Mean reduction of hemoglobin levels were observed after 12 weeks. No significant association of hemoglobin levels was observed, in those who received ribavirin for 12 and 48 weeks P value 0.295.Conclusion: Noticeable frequency of hemolytic anemia observed among HCV patients treated with ribavirin

Dynamics of variable-viscosity nanofluid flow with heat transfer in a flexible vertical tube under peristaltic waves

The present investigation addresses nanofluid flow and heat transfer in a vertical tube with temperature-dependent viscosity. A Tiwari-Das type formulation is employed for the nanofluid with a viscosity modification. The transport equations are transformed from a cylindrical coordinate system with appropriate variables and simplified via longwave length and low Reynolds number approximations. The resulting boundary value problem is solved analytically. The influence of heat source/sink parameter (), Grashof number (Gr) and the viscosity parameter () and nanoparticle volume fraction () on velocity, temperature, pressure gradient, pressure rise and wall shear stress distributions is presented graphically. Three different nanofluid suspensions are investigated- Titanium oxide-water, Copper oxide-water and Silver-water. Streamline plots are also computed to illustrate bolus dynamics and trapping phenomena which characterize peristaltic propulsion. The computations show that wall shear stress is maximum for the Silver-water nanofluid case. Furthermore the pressure rise is reduced with increasing Grashof number, heat absorption parameter and viscosity parameter in the augmented pumping region whereas the contrary response is observed in the peristaltic pumping region. Significant modification in the quantity of trapped boluses is found with different nanofluids and the size of the trapped bolus is decreased in the Titanium oxide-water nanofluid case with either greater heat source or sink parameter. The study is relevant to drug delivery systems exploiting nano-particles

Resilience And Academic Achievement Of Male And Female Secondary Level Students In Pakistan

Resilience is the ability to succeed despite barriers that make it difficult for the students to succeed. The purpose of this study was to investigate the relationship between resilience and academic achievement of secondary level students of Gujranwala, Pakistan. A Resilience scale was used to collect data. The sample consisted of 127 secondary students, including 52 boys and 75 girls. The data revealed that there was no association between resilience and achievement as measured through marks obtained in 10th grade. The boys are more resilient than girls at the secondary level in Pakistan. &nbsp

Decision Making Practices In Universities Of Pakistan

Decision making can be regarded as an outcome of mental processes (cognitive process) leading to the selection of a course of action among several alternatives. Every decision making process produces a final choice. The output can be an action or an opinion. The purpose of this descriptive survey was to explore the Decision making practices in administrative and academic matters in the universities of Pakistan. A sample of nineteen universities was selected by applying stratified random sampling technique.  The respondents, i-e members of university bodies; teachers and administrative officers were selected randomly. Three questionnaires constructed on Likert’s five-point scale were used for data collection. Data was tabulated and analyzed by using the F-ratio and Chi-square. The survey results revealed that overall decision-making practices in the universities were found unsatisfactory and, most of the decisions were made without application of management decision-making techniques

Impact of Foreign Direct Investment (FDI) on GDP: A Case Study from Pakistan

This research study is related to FDI and GDP and the main aim of this research study is to validate the relationship between them. Foreign direct investment (FDI) is considered as a growth accelerating component that has received a great attention in developed countries even in developing and less developed countries during recent years. Now FDI has greater importance in closed economy. FDI benefits any economy in terms of technology, skilled labor and skills transfer to the host countries. For data collection, 30 year data from 1983 to 2012 was collected and the cobb-Douglas Production function is used to test the relationship. Our research variables are Gross Capital Formation (K), Labor (L), Health Expenditure (H), FDI and openness to trade in export oriented economy (OP*FDI). We have followed the Bhagwati’s hypothesis that was: FDI has greater impact on GDP in the export oriented economy. For data analysis, we have examined the descriptive statistics, correlation and regression model. For this we incorporate the production function in regression model. In brief, our results show that there is a positive relationship between FDI and GDP in Pakistan. But, Pakistan has not sufficient flow of FDI during past decades. And main point to consider which is evident through statistics and results is that there is greater impact of FDI in the open trade policy regimes. It is also concluded that FDI impact may be situation and culture related. So, the extent of FDI economic benefits cannot be predicted

Can extended anticoagulation prophylaxis after discharge prevent thromboembolism?

A meta-analysis confirmed the benefit of thromboprophylaxis with a direct oral anticoagulant for high-risk nonsurgical patients after hospital discharge.Muhammad Nadeem Anwar, MD; Usman Ahmad Khan, MD; Laura Elizabeth Morris, MD, MSPH (Department of Family and Community Medicine, University of Missouri, Columbia). Deputy editor: Anne Mounsey, MD (Department of Family, Medicine, University of North Carolina, Chapel Hill)Includes bibliographical reference

An Investigation Of Foreign Language Classroom Anxiety And Its Relationship With Students Achievement

The present study examines anxiety in English undergraduate classes with regard to the type of situations that provoke anxiety during different stages of the learning process and the relationship of anxiety with learners’ achievement. Participants of the study include 149 undergraduates enrolled in second and sixth semester of different departments of University of Sargodha who are learning English as a foreign language. The questionnaire used in this study is the abbreviated form of Foreign Language Classroom Anxiety Scale (FLCAS). An inventory is also used to determine different situations that provoke anxiety. Finally, students’ GPA in English classes is taken to find its relationship with language anxiety. The results show that language anxiety and achievement are negatively related to each other. It is also found that female students are lessanxious in learning English as a foreign language than male students. ‘Speaking in front of others’ is rated as the biggest cause of anxiety followed by ‘worries about grammatical mistakes’, ‘pronunciation’ and ‘being unable to talk spontaneously’. It is suggested that the classroom environment should be encouraging and motivating. Moreover, teachers need to deal with anxiety-provoking situations carefully

Sorptivity of self-compacting concrete containing fly ash and silica fume

This paper presents the surface water absorption of self-compacting concrete (SCC) containing fly ash and silica fume using sorptivity test. Ordinary Portland cement was partially replaced by various combinations of fly ash and silica fume. Test results show that the presence of fly ash and silica fume significantly reduce the surface water absorption of self-compacting concrete at a water-binder ratio of 0.38. When only fly ash is used to partially replace Ordinary Portland cement, a more noticeable reduction in sorptivity is found when the fly ash content is greater than 20%