نتایج جستجو برای: تضعیف cns
تعداد نتایج: 108754 فیلتر نتایج به سال:
در تصویرگیری از بافت های مهم بدن نظیر قلب با روش های پزشکی هسته ای، به دلیل آنکه این بافت توسط بافت های دیگر و نیز قفسه سینه پوشانده شده است، پرتوهای گامای خارج شده از هر نقطه قلب در طول مسیر خود دچار تضعیف و پراکندگی می شوند و لذا کیفیت تصاویر حاصل کاهش می یابند. به منظور ارتقاء کیفیت تصاویر قلب، در این تحقیق ابتدا مهم ترین الگوریتم های تصحیح اثر تضعیف مورد مطالعه و ارزیابی قرار گرفت، سپس بهتر...
A vision monitoring system for multipoint deflection of large‐span bridge based on camera networking
This paper proposes a vision monitoring system for multipoint deflection of large-span bridge that can well compensate the camera motion–induced errors. The network (CNS) consists series dual-camera stations are linked with cooperative markers. infrared illumination supplement device is integrated in station and regular double-sided prism selected as marker to realize 24-h continuous monitoring...
Coagulase-negative staphylococci (CNS) have become the most common bovine mastitis isolate in many countries and could therefore be described as emerging mastitis pathogens. The prevalence of CNS mastitis is higher in primiparous cows than in older cows. CNS are not as pathogenic as the other principal mastitis pathogens and infection mostly remains subclinical. However, CNS can cause persisten...
Meningoencephalitis of unknown origin (MUO) is one the most common inflammatory diseases central nervous system (CNS). The study evaluates possible increase and potential role acute phase proteins (APPs) other serum parameters as biomarkers predicting short-term outcome dogs with meningoencephalitis (MUO). A retrospective cohort was designed. APP profile markers systemic inflammation forty-eigh...
Glial cells play a role in many important processes, though the mechanisms through which they affect neighboring are not fully known. Insights may be gained by selectively activating glial cell populations intact organisms utilizing activatable channel proteins rhodopsin (ChR2XXL) and TRPA1. Here, impacts of glial-specific expression these channels were examined both larval adult Drosophila. Th...
The complement pathway is a major component of the innate immune system, which critical for recognizing and clearing pathogens that rapidly react to defend body against external pathogens. Many components this are expressed throughout brain play beneficial role in synaptic pruning developing central nervous system (CNS). However, excessive complement-mediated aging or injured may contributing w...
In central nervous system (CNS) demyelinating disorders, such as multiple sclerosis (MS), neuromyelitis optica (NMO) and related NMO-spectrum disorders (NMO-SD), a pathogenic role for antibodies is primarily projected into enhancing ongoing CNS inflammation by directly binding to target antigens within the CNS. This scenario is supported at least in part, by antibodies in conjunction with compl...
Abstract Background Little is known about HIV-1 integrase inhibitor resistance in the CNS. Objectives This study aimed to evaluate CSF, as a marker of CNS, and compare it with plasma. Methods HIV was sequenced both plasma CSF for 59 patients. The clinical biological data were collected from routine care. Results Among patients, 32 (54.2%) under antiretroviral (ARV) treatment. median (IQR) RNA v...
multiple sclerosis (ms) is an autoimmune disease, which is characterized by demyelination and neuroinflammation. extracellular matrix (ecm) have important role in the central nervous system (cns). alterations are happening to the ecm after the cns disorder like ms, alzheimer and other neural injury. tenasin-c (tnc) is a glycoprotein that is highly expressed in inflammatory conditions of the cns...
abstract background: a tumefactive lesion of central nervous system (cns) is defined as a mass-like lesion with a size greater than 2 cm in brain (magnetic resonance imaging) mri. neuroimaging may help to distinguish the nature of a tumefactive lesion and therefore can prevent an unnecessary brain biopsy. method: in this paper, we have emphasized on determining the nature of a cns tumefactive l...
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