JBAS Articles
JBASV8N2A39- Some New Exact Solutions for Prescribed Vorticity Distribution of Couple Stress Fluids in the Presence of Unknown Body Force
Journal of Basic and Applied Sciences - Volume 8 Number 2
Some New Exact Solutions for Prescribed Vorticity Distribution of Couple Stress Fluids in the Presence of Unknown Body Force
Rana Khalid Naeem
http://dx.doi.org/10.6000/1927-5129.2012.08.02.39
Abstract: In the present paper, we indicate some new exact solutions of equations of motion for plane steady incompressible couple stress fluids flows in the presence of unknown body force for which vorticity distribution is defined by Eq. (12). All solutions involve arbitrary real constants and arbitrary real constants depending on the parameter è indicating that a large number of streamfunctions and expressions for body force can be constructed. Some streamfunctions ø are constructed for some values of parameters. The streamlines patterns of these streamfunctions are presented and discussed.
Keywords: Exact solutions, Couple stress fluid, Flows for prescribed vorticity distribution.
JBASV8N2A36- Impact of Release Intervals and Densities of Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammatidae) Against the Sugarcane Stem Borer, Chilo infuscatellus (Lepidoptera; Pyralidae) under Field Conditions
Journal of Basic and Applied Sciences - Volume 8 Number 2
Impact of Release Intervals and Densities of Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammatidae) Against the Sugarcane Stem Borer, Chilo infuscatellus (Lepidoptera; Pyralidae) under Field Conditions
Raza Muhammad, Maqsood Anwar Rustamani, Nazia Suleman, Nazir Ahmad and Qadeer Ahmad
http://dx.doi.org/10.6000/1927-5129.2012.08.02.36
Abstract: The parasitization of Trichogramma chilonis parasitoids was found higher in the blocks where parasitoids were released to control Chilo infuscatellus at weekly interval (52.4 %) as compared to fortnight (40.9%) and monthly intervals (32.7%). Mean parasitization was (42.7%) when 80,000 thousand parasitoids were released on monthly basis followed by 41.4% (40,000), 37.8% (20,000) and 34.0% (10,000). However the mean infestation was below economic threshold levels ranging from 5.3 to 6.5 % in all the blocks where the parasitoids were released in variable numbers.
Keywords: Sugarcane, Trichogramma chilonis, Chilo infuscatellus, release interval, release densities.
JBASV8N2A35- A Comparative Study of the Antihypertensive Agents on Serum Liver Enzymes ALT, AST and ALP of Hypertensive and cardiac Patients
Journal of Basic and Applied Sciences - Volume 8 Number 2
A Comparative Study of the Antihypertensive Agents on Serum Liver Enzymes ALT, AST and ALP of Hypertensive and cardiac Patients
Aisha Javaid, Ruqaiya Hasan, Aisha Zohra and Zahir Hussain
http://dx.doi.org/10.6000/1927-5129.2012.08.02.35
Abstract: Present study is done to compare serum Liver enzymes including Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST) and Alkaline Phosphatase (ALP) in hypertensive and cardiac patients. 24 patients were divided into 4 groups according to their treatment with 4 different types of antihypertensive drugs. Group I treated with Beta-blockers (1+1). Group II treated with ACE-Inhibitor once a day. Group III treated with Nitrates once a day. Group IV is taking Diuretics once a day. Data showed non-significant difference in serum ALT concentration in all groups. A significant rise (p< 0.05) in serum AST and ALP levels among hypertensive and cardiac patients is observed, ranging from 24.63-47.33U/L and 110-2484 U/L respectively when compared with normal controls. Thus, not only the risk of cardiac diseases in future might be predicted by altered levels of enzymes ALT, AST and ALP in serum but their concentrations should be monitored during the treatment of cardiac diseases to minimize the risk of cardiac arrest.
Keywords: Angiotensin-II, Catecholamines, Diuretics, Nitrates, Cardiac dysfunction, Liver injury.
JBASV8N2A33- Troubleshooting Techniques of Complex Multi-Layered PCBs
Journal of Basic and Applied Sciences - Volume 8 Number 2
Troubleshooting Techniques of Complex Multi-Layered PCBs
Mirza Salman Baig and Ambreen Insaf
http://dx.doi.org/10.6000/1927-5129.2012.08.02.33
Abstract: In this modern era where technology is rapidly changing and is being advanced day by day, Pakistan is dependent on foreign OEM (Original Equipment Manufacturer) for the functional supportability of the systems because most of the commercial and non-commercial systems are foreign OEM based. In the case of any defect of the systems and to reduce the dependency on OEM, the simplest way is to troubleshoot the PCBs (Printed Circuit boards) of the system locally instead of purchasing new PCB or sending it back to OEM for repair until we are able to design our own systems. Thus, it won’t be wrong saying “time, tide and technology wait for none”. The purpose of this research is to achieve self-reliance in PCB troubleshooting, thereby reducing dependability on foreign OEMs, equipment downtime and high costs being acquired in PCB repairs, secondly to highlight the importance of this field so that universities may adopt it as a subject. This research paper is based on some troubleshooting techniques for repair of complex multilayered PCBs.
Keywords: Technology, functional supportability, foreign Original Equipment Manufacturer, commercial systems, repair of Printed Circuit Board.
