186 results for “sag”

Set a search alert

Research ArticleOpen accessIn the abstractVoltage Swells Improvement in Low Voltage Network Using Dynamic Voltage RestorerR. Omar, N.A. Rahim, A. AhmadProblem statement: Voltage disturbances are the most common power quality problem due to the increased use of a large numbers of sophisticated electronic equipment in industrial distribution system. The voltage disturbances such as voltage sags, swells, harmonics, unbalance and flickers. High quality in the power supply is needed, since failures due to such disturbances usually have a high impact on … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 7,376 accessesView PDF Cite

Research ArticleOpen accessIn the abstractIdentification a Novel Raw-Starch-Degrading-α-Amylase from a Tropical Marine BacteriumZeily Nurachman, Alfredo Kono, Ocky Karna Radjasa, Dessy NataliaProblem statement: Bacteria from the surface of the tropical marine hard coral Acropora sp. were screened for producing raw-starch-degrading-α-amylase. Approach: Based on its 16s rDNA sequence, a bacterium that produced the highest amylolitic activity was identified as Bacillus amyloliquifaciens ABBD. The bacterial isolate secreted a α-amylase extracellularly and then the enzyme was partially purified by ammonium sulfate precipitation followed by … …American Journal of Biochemistry and Biotechnology, Vol. 6, Issue 4 · 31 Dec 2010 · 9,329 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInduction of Embryogenic Callus and Plant Regeneration in Carnation (Dianthus caryophyllus L.)Omid KaramiIn this study, efficient plant regeneration through somatic embryogenesis is achieved in four cultivars of carnation (Nelson, Sagres, Spirit and Impulse). Embryogenic calli were induced on petal explants only, all the calli established on leaf, sepal, receptacle and style explants were not embryogenic. Embryogenic calli were obtained on Morashige and Skoog basal medium (1962) containing sucrose 9%, 2.0 mg L-1 … …OnLine Journal of Biological Sciences, Vol. 8, Issue 4 · 31 Dec 2008 · 6,813 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffects of Fertilization and Clipping of Phlomis fruticosa L. on a Phryganic Ecosystem: The Case of Thesprotia, Northwest GreeceCh. Roukos, K. Papanikolaou, E. Nikolaou et al.This study examined the effectiveness of various shrub control treatments (N+P fertilization, clipping of Phlomis fruticosa and clipping combined with N+P fertilization), to reduce shrub cover and encourage the growth of palatable herbaceous vegetation. Dry matter production and Crude Protein (CP) content of palatable herbaceous vegetation were determined annually from 2004 to 2006. Experimental plots received rains of 691.7, 532.9 … …American Journal of Environmental Sciences, Vol. 4, Issue 6 · 31 Dec 2008 · 6,823 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDetection of Chlamydophila abortus in Sheep (Ovis aries) in MexicoJuan Manuel Jiménez-Estrada, Marcos R. Escobedo-Guerra, Gabriel Arteaga-Troncoso et al.Chlamydophila abortus is one of the pathogens which induce abortion in small ruminants; this pathogen has a tropism for ruminant placenta and causes the disease commonly referred to as Ovine Enzootic Abortion (OEA). In Europe are estimated economic losses of around 20 million pounds a year by OEA. In the American Continent the disease has been reported only in Canada, … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 4 · 31 Dec 2008 · 7,887 accessesView PDF Cite

Research ArticleOpen accessIn the abstractPower Enhancement of Weightlifters during Snatch through Reducing Torque on Joints by Particle Swarm OptimizationFirooz Salaami, Nima Jamshidi, Mostafa Rostami, Siamak NajarianIn this research, an athlete's body on sagittal plane in tension phase of snatch weightlifting has been modeled in two dimensions for calculating the generated torques in joints. The error back propagation multi-layer perceptrons has been used for modeling the torque through changing the angular velocity, angular acceleration and absolute angle of each segment. Finally, the torque in joints has … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 7,101 accessesView PDF Cite