نتایج جستجو برای: tof
تعداد نتایج: 12111 فیلتر نتایج به سال:
objective(s):small ubiquitin-like modifiers (sumos) are a family of ubiquitin-related, proteins that are involved in a wide variety of signaling pathways. sumoylation, as a vital post translational modification, regulate protein function in manycellular processes. diazinon (dzn), an organophosphate insecticide, causses oxidative stress and subsequently programmed cell death in different tissues...
background: culture media enrichment through the addition of protein hydrolysates is beneficial for achieving higher protein expression. methods: in this study, designing the optimum mixture of four soy and casein-derived hydrolysates was successfully performed by design of experiment and specific productivity increased in all predicted combinations. protein profile of recombinant cho (rcho) ce...
ارزیابی مزایای استفاده از پدیده ی زمان پرواز در تصویربرداری سه بعدی pet با استفاده از روش مونت کارلو
همانند اغلب سیستمهای تصویربرداری، کارآیی و کیفیت تصاویر در pet نیز با نویز آماری محدود شده است. با محاسبه دقیق زمان ورود دو فوتون با انرژیkev 511 در حلقه آشکارسازهای دور بیمار، مکان نابودی قابل محدود شدن در یک بازه است. این تکنیک که به طور قابل ملاحظه ای می تواند نویز آماری در مقادیر بازسازی شده را کاهش دهد، tof pet نامیده می شود. تعدادی دوربین pet با توانایی اندازه گیری tof در دهه 80 میلادی سا...
Introduction: Since 1954, after the first surgical repair of tetralogy of Fallot (TOF), several innovations have occurred in cardiac surgery, especially in children. One stage complete repair of TOF is currently possible even in infancy; however, complications such as hypoxemia, arrhythmia, cardiac dysfunction, sudden death, and valvular disorders may happen. In this study, we evaluated the res...
Objective(s): The present study was conducted to examine whether the standardized uptake value (SUV) may be affected by the spatial position of a lesion in the radial direction on positron emission tomography (PET) images, obtained via two methods based on time-of-flight (TOF) reconstruction and point spread function (PSF). Methods: A cylinder phantom with the sphere (30mm diameter), located in...
background traditional digital subtraction angiography (dsa) is currently the gold standard diagnostic method for the diagnosis and evaluation of cerebral arteriovenous malformation (avm) and dural arteriovenous fistulas (davf). objectives the aim of this study was to analyze different less invasive magnetic resonance angiography (mra) images, time-resolved mra (tr-mra) and three-dimensional ti...
background: cutaneous leishmaniasis (cl) is endemic in southeastern anatolia, mainly in sanliurfa and hatay provinces, and the causative agents are mostly leishmania tropica and less frequently l. infantum . here, we report the first mal-di-tof analyses of leishmania promastigotes obtained from the cultures of two cl cases from osmaniye and hatay provinces who were initially diagnosed by micros...
Background and Objective: Due to fears of postoperative complications following upper gastrointestinal surgeries (UGI), fasting before bowl function recovery is a traditional practice, but fasting following elective surgery is controversial. The aim of this study was to compare early oral feeding versus traditional oral feeding in patients who underwent UGI surgeries. Materials and Methods: Fif...
objective(s): the present study was conducted to examine whether the standardized uptake value (suv) may be affected by the spatial position of a lesion in the radial direction on positron emission tomography (pet) images, obtained via two methods based on time-of-flight (tof) reconstruction and point spread function (psf). methods: a cylinder phantom with the sphere (30mm diameter), located in...
Cyperus rotundus (CR) is a traditional medicinal herb, and recent studies demonstrated its pharmacological effects to cure neurological disorders. In our earlier reports, we also found that CR exerts anxiolytic effects and improves memory impairment in hypoxia-induced rats. In vitro CR also effectively ameliorates oxidative stress-induced SH-SY5Y neuronal cell damage. In the present study, we e...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید