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This paper looks at the simultaneous effects of heat and mass transfer in the flow of Williamson fluid over an unsteady stretching surface. The effects of thermal radiation and viscous dissipation are considered in an energy equation. Besides, the energy and concentration equations are coupled with the combined effects of Soret and Dufour. The convective conditions for both temperature and mass concentration are employed. The transformation procedure reduces the time-dependent boundary layer equations of momentum, energy, and concentration to the non-linear ordinary differential equations. Through graphs and numerical values, the velocity, temperature, and concentration fields are discussed for different physical parameters. It is found that the thermal and concentration Biot numbers have an increasing impact on both temperature and concentration fields, respectively.

The aim here is to investigate the effects of convective heat and mass transfer in the flow of Eyring-Powell fluid past an inclined exponential stretching surface. Mathematical formulation and analysis have been performed in the presence of Soret, Dufour and thermal radiation effects. The governing partial differential equations corresponding to the momentum, energy and concentration are reduced to a set of non-linear ordinary differential equations. Resulting nonlinear system is computed for the series solutions. Interval of convergence is determined. Physical interpretation is seen for the embedded parameters of interest. Skin friction coefficient, local Nusselt number and local Sherwood number are numerically computed and examined.

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Objectives: Acquired cystic renal disease is known complication of End stage renal disease and hemodialysis and is also a precursor to renal cell carcinoma in patients who are on long term maintenance hemodialysis. Study Design: Cross Sectional study. Setting: Bahawal Victoria Hospital, Bahawalpur-Pakistan. Period: Jan 2019 to June 2019. Material & Methods: Patients on maintenance hemodialysis were evaluated using ultrasound for acquired cystic renal disease. Results: The study included 220 patients who were on maintenance hemodialysis. The male to female ratio was 2.01:1. Most common causes of renal failure were Diabetes Mellitus and Renal stone Disease (22.3%) each. Acquired cystic renal disease was found in 45 (20.5%). The difference of frequency of acquired cystic renal disease was statistically significant in age groups & anemia. Conclusions: Acquired cystic renal disease is common complication of End stage renal disease and maintenance hemodialysis. Regular monitoring with ultrasound needs to be done for those patients who are on maintenance hemodialysis for more than 3 years.