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Jamshoro, Pakistan

The University of Sindh , is a public research university located in the residential area of Jamshoro, Sindh, Pakistan. It is one of the oldest universities in Pakistan, and as of 2013 was ranked in eighth in terms of "general category" by the Higher Education Commission of Pakistan.Founded in 1947 in Karachi, the university was relocated to Hyderabad where the university began functioning as a full-fledged teaching university. There are four law colleges and various other colleges affiliated with the Sindh University. The university is noted for research in literature, natural science, philosophy, and Sindhology. The university is also a member of the Association of Commonwealth Universities of the United Kingdom. Wikipedia.

Hong Y.,Zhejiang University | Soomro M.A.,University of Sindh | Ng C.W.W.,Hong Kong University of Science and Technology
Computers and Geotechnics | Year: 2015

Development of underground transportation systems often involve twin tunnels, which may encounter existing pile groups during construction. Since many previous studies mainly focus on the effects of single tunnelling on single piles, settlement and load transfer mechanism of a pile group subjected to twin tunnelling are not well investigated and understood. To address these two issues, two three-dimensional centrifuge tests were carried out in this study to simulate side-by-side twin tunnels (excavated one after the other on both sides of the pile group) at two critical locations relative to the pile group, namely next to (Test TT) and below the toe of the pile group (Test BB). Moreover, numerical back-analyses of the centrifuge tests are conducted by using a hypoplastic model, which takes small-strain stiffness into account. Both measured and computed results show that the induced tilting of the pile group in Test TT is significantly larger than that in Test BB, with a maximum percentage difference of 120%. On the other hand, a slightly smaller (about 13%) settlement of the pile group is induced in Test TT, as compared to that in Test BB. This is because the pile group in Test TT is partially located within the major influence zone of tunnelling-induced ground settlement while the entire pile group in Test BB is bounded by the major influence zone of ground settlement. Two distinct load transfer mechanisms due to twin tunnelling are identified, i.e., the load in the pile group in Test TT transfers downwards from the pile shaft to the pile toe while the load in the pile group in Test BB transfers upwards from the pile toe to the pile shaft. Apart from load transfer along each pile, load re-distribution also occurs among piles during twin tunnelling. In both Tests TT and BB, axial load at pile head only reduces at a pile closet to the advancing tunnel face and the reduction is re-distributed to the other three piles. The load re-distribution among piles results in a maximum increase of axial force of 10% in Test TT. © 2014 Elsevier Ltd. Source

Maheshwari N.,University of Sindh
Saudi journal of kidney diseases and transplantation : an official publication of the Saudi Center for Organ Transplantation, Saudi Arabia | Year: 2010

This hospital-based cross-sectional comparative observational study was performed to determine the pattern of lipid profile in patients on maintenance hemodialysis. The study was performed at the Department of Nephro-Urology, Liaquat University Hospital, Hyderabad, Pakistan from April 2008 to June 2008. Fifty patients with end-stage renal disease on maintenance hemodialysis (MHD) were studied. They comprised of 31 males and 19 females, the mean duration on HD was 7.58 +/- 2.05 yrs, with frequency of two to three sessions per week and each session lasting for four hours. Additionally, 25 healthy volunteers (16 male, 9 female) were also studied. After obtaining informed, written consent, general information of each patient was recorded on the proforma. After 12-hours fasting, blood samples were drawn from the arterio-venous fistula before starting dialysis. The total cholesterol, triglyceride (TG) or low density lipoprotein (LDL) levels more than 95th percentile for age and gender or high density lipoprotein (HDL) less then 35 mg/dL was defined as dyslipidemia. Descriptive and inferential statistical analysis were performed using SPSS version 16.0. The age among MHD and control groups was 47.88 +/- 13.92 and 54.56 +/- 11.16 years respectively. Serum TG and lipoprotein-a (LPa) were significantly increased (P = < 0.001 for each) while HDL-c was significantly lower (P = < 0.001) in MHD patients than in the control group. The serum cholesterol, LDL-c, VLDL-c and chylomicron levels were not significantly different in the two groups. Our study suggests that patients on MHD show abnormalities of lipid metabolism like hypertriglyceridemia, elevated lipoprotein-a and low HDL-c, which could contribute to atherosclerosis and cardiovascular disease that may increase the morbidity and mortality in these patients. Source

Ali Muttaqi Shah S.H.,University of Sindh
Meccanica | Year: 2010

In this article, fractional calculus approach is used in the constitutive relationship of a Burgers' fluid model. Integral transforms are used to calculate the velocity and the stress fields for some helical flows of a Burgers' fluid with fractional derivative. Moreover, the behavior of different physical parameters involve in the Burgers' fluid model is analyzed through several graphs. Copyright © 2009 Springer Science+Business Media B.V. Source

Hyder Ali Muttaqi Shah S.,University of Sindh | Qi H.,Shandong University
Nonlinear Analysis: Real World Applications | Year: 2010

In this work, we have discussed some simple flows of a viscoelastic fluid with fractional Burgers' model in an annular pipe. The fractional calculus approach is introduced in the constitutive relationship of a Burgers' fluid model. Exact analytical solutions are obtained by using Laplace and Weber transforms for two types of flows, namely: Poiseuille flow and Axial Couette flow. © 2009 Elsevier Ltd. All rights reserved. Source

Hyder Ali Muttaqi Shah S.,University of Sindh
Nonlinear Analysis: Real World Applications | Year: 2010

The aim of this work is to discuss some unidirectional flows of a viscoelastic fluid between two parallel plates with fractional Burgers' fluid model. The exact analytical solutions for Plane Poiseuille and Plane Couette flows are obtained by using the finite Fourier sine transform and the Laplace transform. Moreover, the graphs are plotted to show the effects of different parameters on the velocity field. © 2009 Elsevier Ltd. All rights reserved. Source

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