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2,703 articles for “PI Control”
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Research ArticleOpen accessIn the abstractThe Effects of Harmonic Components on Transformer Losses of Sinusoidal Source Supplying Non-Linear LoadsI. Daut, H. S. Syafruddin, Rosnazri Ali et al.An important consideration when evaluating the impact of harmonics is their effect on power system component and loads. Transformers are major components in power systems. The increased losses due to harmonic distortion can cause excessive losses and hence abnormal temperature rise. The measurement of iron losses and copper losses of single-phase transformers is important in particular for transformers feeding nonlinear … …American Journal of Applied Sciences, Vol. 3, Issue 12 · 31 Dec 2006 · 8,398 accessesView PDFCite
Research ArticleOpen accessIn the abstractCoronary Heart Disease (CHD) Risk Factors and Metabolic Syndrome in HIV-Positive Drug Users in MiamiMarianna K Baum, Carlin Rafie, Shenghan Lai et al.The frequency of coronary heart disease (CHD) is increasing among HIV seropositive persons. This phenomenon may be related to HIV disease itself, the use of antiretroviral medications and increased length of survival, or the synergism of these factors. In this study we have calculated the 10-year CHD risk estimate and the prevalence of metabolic syndrome in a cohort of 118 … …American Journal of Infectious Diseases, Vol. 2, Issue 3 · 30 Sep 2006 · 6,989 accessesView PDFCite
Research ArticleOpen accessIn the abstractNeuroendocrine Abnormalities in Drug Abusers and HIV-Infected Individuals: Cortisol Response to Cold Pressor ChallengeMahendra Kumar, Drenna Waldrop-Valverde, Adarsh M. Kumar et al.Although endocrine abnormalities have been reported in HIV-1 infection, the role of risk factors is not understood. Injecting drug use (IDU) is an important risk factor for contracting HIV-infection and studies suggest that substance use may also be associated with endocrine dysfunction. In order to investigate hypothalamic pituitary adrenal (HPA) axis activity in this population, this study investigated cortisol response … …American Journal of Infectious Diseases, Vol. 2, Issue 3 · 30 Sep 2006 · 6,594 accessesView PDFCite
Research ArticleOpen accessIn the abstractRisk of Second Non Breast Malignancies (SNBM) in Relation to Brca1 And Brca2 Mutation Status Following Breast-Conserving Surgery and RadiotherapyYoulia M. Kirova, Alain Fourquet, Alexia Savignoni, Brigitte Sigal-ZafraniWomen from hereditary breast cancer families with BRCA1/2 germline mutation are at increased risk for contralateral breast cancer (BC) and for ovarian cancer (OC). It is less clear whether mutation status influences the rate of SNBM other than OC. In addition, little is known on the risk of OC in individuals from hereditary BC families without identified BRCA mutation. Our … …American Journal of Immunology, Vol. 2, Issue 3 · 30 Sep 2006 · 7,228 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffective Thermophilic Composting of Crop Residues for Inactivation of Tobacco Mosaic VirusA.E. Ghaly, F. Alkoaik, A. Snow, R. SinghAn effective thermophilic composting bioreactor, in which a homogenous distribution of temperature was maintained at 63-65°C by the addition of a bioavailable carbon and low mixing, was developed. The bioreactor operated on a mixture of tomato plant residues-wood shavings-municipal solid waste compost infected with tobacco mosaic virus (TMV). The initial C: N ratio and moisture content of the compost mixture … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 3 · 30 Sep 2006 · 6,963 accessesView PDFCite
Research ArticleOpen accessIn the abstractMicrocontroller Based Power SupplyTanvir Singh Mundra, Er. Satwinder Singh Sachdeva, K.S. KahlonThese days, majority of electronic devices work on DC power source, so there was a requirement of a reliable and customized power supply. Generally, the requirements are not too varied, but still they require every time a new hardware designing. The idea presented here is to build a microcontroller controlled power supply[1] that is flexible enough to meet different customer … …Journal of Computer Science, Vol. 2, Issue 8 · 31 Aug 2006 · 6,781 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacteristics of Effective Dynamics and its Use in Developing the Product Quality and Proceeds in Inclusively FirmNasir Al KloubControlling product size type and quality is a set of technical, technological, organizational and preparatory procedures correlated in one process. Indexes for the demand for product in foreign and local markets vary according to its quality, and consequently technological processes should guarantee and warrant protects of subtle qualities and quality indexes. Securing quality of the product in all industrial sectors … …American Journal of Applied Sciences, Vol. 3, Issue 8 · 31 Aug 2006 · 6,245 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Rubber Band Ethics Model for Computing and Information Technology PracticesMahmoud Iskandarani, Ghaleb El-Refae, Shorouq F. El-EtterAn innovative model for analyzing and describing the role of ethics and the manner in which it is applied in the general field of information technology is presented. Current practices and existing behavior rules that are related to economical and social issues are discussed with specific reference to computing technologies such as the internet. A theoretical model for computing and … …American Journal of Applied Sciences, Vol. 3, Issue 7 · 31 Jul 2006 · 6,667 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Changing Pathology of NeuroAIDS Associated with Drug Abuse in the Era of HAARTE Bell Jeanne, C. Anthony Iain, Simmonds PeterCompliance with highly active antiretroviral therapy (HAART) arrests HIV induced immune collapse and reduces the prevalence of severe central nervous system (CNS) complications, including HIV associated dementia and encephalitis. However minor cognitive disorders remain common and recent autopsy studies have demonstrated the presence of subtle neuropathological abnormalities in HAART treated individuals, including persistent neuroinflammation and enhanced deposition in the brain … …American Journal of Infectious Diseases, Vol. 2, Issue 2 · 30 Jun 2006 · 6,872 accessesView PDFCite
Research ArticleOpen accessIn the abstractSurvival and Changes in Germination Response of Rumex obtusifolius Polygonum longisetum and Oenothera biennis during Burial at Three Soil DepthsShiro TsuyuzakiTo investigate patterns in seed germination and survival at three different soil depths over a long time span, seeds of Rumex obtusifolius, Polygonum longisetum and Oenothera biennis were examined as a function of season (spring, autumn) and soil depth (3, 10, 30 cm). Buried seeds were exhumed after 3 years and subjected to two different temperature treatments. These were gradually … …American Journal of Environmental Sciences, Vol. 2, Issue 2 · 30 Jun 2006 · 7,194 accessesView PDFCite