نتایج جستجو برای: transmission
تعداد نتایج: 245874 فیلتر نتایج به سال:
hiv infection by maternal transmission is increasing in the world due to the increase in infected women who are not receiving appropriate antiretroviral therapy. prognosis of hiv infection in children is poor because the newborn has an immature immune system. early diagnosis and therapy are needed to avoid the development of aids. new therapies are becoming available but prevention of infection...
objective(s) the objective of this study was to evaluate the effect of cannabinoid on cortical spreading depression (csd) in rat brain. cannabis has been used for centuries for both symptomatic and prophylactic treatment of different types of headaches including migraine. csd is believed to be a putative neuronal mechanism underlying migraine aura and subsequent pain. materials and methods the ...
objective(s):neurodegenerative alzheimer’s disease (ad) is associated with profound deficits in synaptic transmission and synaptic plasticity. long-term potentiation (ltp), an experimental form of synaptic plasticity, is intensively examined in hippocampus. in this study we evaluated the effect of aqueous extract of lavender (lavandula angustifolia) on induction of ltp in the ca1 area of hippoc...
ultraviolet radiation (uvr) has been accepted as an attractive alternative to chlorination for the disinfection of wastewater. in this study the effluent from sahebgaranieh treatment plant was subjected to changes in uv transmission and turbidity in order to correlate these commonly measured parameters with the performance of a submerged -uv- reactor employed in disinfecting the effluent. studi...
background: to determine the possible sources for the transmission of hepatitis b virus (hbv) infection to children in babol, north of iran.methods: forty-five boys and 35 girls with the mean age of 9.2±5.1 years were evaluated from 1993 to 2004. hepatitis b viral markers in all the family members were assessed. the risk factors for other sources were also determined.results: sixty-five (81.3%)...
Despite the fact that transmission network has a vital role in electricity markets and cost of transmission expansion is considerable, but transmission charges represent a small percentage of power system operating costs. Thus, transmission cost allocation should be a reasonable economic indicator to make decisions on facility allocation, transmission expansion and other similar market tasks. ...
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
background the presence of an infected family member significantly increases the risk of hbv transmission, but many socio-demographic and viral characteristics of family members affect the transmission rate. objectives in this study, we have used data mining techniques to investigate the impact of different variables in intrafamilial transmission of hbv infection. patients and methods demograph...
using new approaches to optimize the process of power transmission line routing can solve many complex problems which power transmission line routing decision-makers are faced. due to the expansion of involved parameters we can consider multi-objective evolutionary algorithms as appropriate method in this area. in this thesis with using multi-objective evolutionary algorithms nsga-ii and offere...
introduction hepatitis b infection remains a major health problem worldwide and is an important cause of morbidity and mortality. since it is transmitted parenterally, investigation of new cases of hepatitis b infections for potential routes of transmission plays a crucial role in controlling hepatitis b infection in the community. case presentation in this study, we reported a new case of hepa...
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