JBAS Articles
JBASV8N2A56-On the Spectral Expansions Connected with Schrödinger’s Operator of Continuous Functions in a Closed Domain
Journal of Basic and Applied Sciences - Volume 8 Number 2
On the Spectral Expansions Connected with Schrödinger’s Operator of Continuous Functions in a Closed Domain
Abdumalik A. Rakhimov, Kamran Zakaria and Nazir Ali Khan
http://dx.doi.org/10.6000/1927-5129.2012.08.02.56
Abstract: Present paper is devoted to study of uniformly convergence of spectral expansions in a closed domain. We consider here as a spectral expansions eigenfunction expansions connected with one Schrodinger’s operator with singular potential in two dimensional domains with smooth boundary.
Keywords: Eigenfunction, Eigenvalues, Expansions, Regularization, Riesz means, Mean value formula, Singular potential, Boundary problem, Hamiltonian, Sobolev spaces.
JBASV8N2A57-Effect of Some Micronutrients on Damage Compensation and Yield Parameters in Okra
Journal of Basic and Applied Sciences - Volume 8 Number 2
Effect of Some Micronutrients on Damage Compensation and Yield Parameters in Okra.
Syed Shahzad Ali, Wazhar Ali Pusio, Huma Rizwana, S. Shahbaz Ali, Shifarash Ghouri and S. Sohail Ahmad
http://dx.doi.org/10.6000/1927-5129.2012.08.02.57
Abstract: The effect of micronutrients on damage compensation and yield components of okra was investigated, using three foliar sprays (at 15 days interval) of Effective microorganisms (EM-1), Wokozim and Kissan Supreme Tonic (KST). Weekly observations on sucking complex (thrips, jassid, whitefly) and pod borers were carried out. The yield ha-1 of green pods was recorded to ascertain the compensation of the damage done by the insect pests. The damage done by sucking complex and borers was markedly compensated by the micronutrients, and okra pod yield in EM-1, Wokozim and KST sprayed plots were 10911, 9507 and 8948 kg ha-1, respectively as compared to 8034 kg ha-1 in control. The effect of micronutrients on crop growth and subsequently on sucking complex infestation was significant and thrips, jassid, whitefly and borer infestation was relatively lesser in plots sprayed with micronutrient as compared to the control. KST was most effective in damage compensation of sucking complex and borers with highest okra green pod yield (P<0.01), followed by Wokozim and EM-1 when compared with control.
Keywords: Okra, micronutrients, sucking complex, okra yield.
JBASV8N2A55-Micro Vertical Axis Wind Turbine Design Integrated with Wind Accelerating Techniques
Journal of Basic and Applied Sciences - Volume 8 Number 2
Micro Vertical Axis Wind Turbine Design Integrated with Wind Accelerating Techniques
Abdul Latif Maghanhar, Saleem Raza Samo and Altaf Hussain Rajpar
http://dx.doi.org/10.6000/1927-5129.2012.08.02.55
Abstract: Power generation from natural wind is the crucial issue due to rapid depletion of non-renewable energy resources and their pollution demerits. Most observers agreed that long-term economic growth will require technical innovation to make wind energy more competitive with other forms of energy. One among the key trends is the push to improve productivity. Vertical axis wind turbines are capable of extracting power from wind regardless of direction of natural wind flow. Very less work is devoted to improve the characteristics of wind to make it more useable for power generation. Major portion of the research is related to the wind energy system design that caters the domestic needs. A micro vertical axis wind turbine system with integrated wind accelerating techniques is proposed. At the outer of the turbine a wind accelerating convergent duct with larger wind area is proposed, that will perform as a nozzle action to accelerate the natural wind when it strikes on the front half portion of the turbine blades. Proposed micro wind turbine is also integrated with satellite dish type parabolic structure, mounted at the top of the turbine. The parabolic concentrator surface is coated with sun rays reflecting mirrors, sunlight striking on paraboliod surface is directed to words a heat absorbing hollow cylinder, erected at the center of the paraboliod concentrator. Hollow cylinder is the path channel for air leaving the turbine. Air molecules passing through this channel will be heated up, moving rapidly up word creating momentum in air leaving from the turbine. Design of the proposed vertical axis wind turbine system integrated with wind accelerating techniques and experimental study of wind accelerating duct composed of various section is reported in this research work.
Keywords: Vertical Axis Wind Turbine, Converging duct, Solar-thermal air heating.
JBASV8N2A54-Screening and Characterization of Luminescent Bacterial Strain
Journal of Basic and Applied Sciences - Volume 8 Number 2
Screening and Characterization of Luminescent Bacterial Strain
Uzma Badar, Erum Shoeb, Komal Daredia, Durr-e-Shawar, Jameela Akhtar and Maqsood A. Ansari
http://dx.doi.org/10.6000/1927-5129.2012.08.02.54
Abstract: Several samples of sea water and sea organisms were collected for the isolation of luminescent bacterial strain. The samples were collected from Clifton, Hawksbay, fisheri at Landhi and Jeti at Korangi, Karachi, Pakistan, the sea organisms such as Crab, Prawn, Fish, Eel, Fish Gut, Electric Fish were collected. Three different media were used for enrichment of samples that is BOSS, Luminescent Agar (LA) and nutrient broth. A total of twenty one different bacterial strains were selected for further studies on the basis of different colonial morphologies. They were designated as DGU101 to DGU116, DGU221-DGU224 and DGU227. These strains were checked for luminescent and tolerance against antibiotics and heavy metal salts. Only one strain isolated from sea water (Clifton beach) designated as DGU227 showed luminescent on Luminescent Agar (LA) medium. It also exhibited multiple metal and antibiotic resistances. The two large plasmids were isolated from DGU227 which were more than 10 kb in size. The luminescence, growth, quorum sensing phenomenon of bioluminescent bacteria is affected by the presence of metal and antibiotics in environment, which act as inducer, and substrate in activating and enhancing these natural activities. Mostly Luminescent was observed after 24 hours of incubation it enhanced while growing in presence of antibiotic Ampicillin. The strain DGU227 was further identified by 16S rRNA gene analysis and exhibited 98% homology with Vibrio chigassi bacterial strain.
Keywords: Bacteria, luminescent, metal resistance, antibiotic resistance, plasmid, Vibrio chigassi.
