نتایج جستجو برای: TBM باز
تعداد نتایج: 24048 فیلتر نتایج به سال:
تخمین نرخ پیشروی ماشین های حفر تونل، به منظور تعیین برنامة زمانی و برآورد هزینه های اجرایی در پروژه های تونلسازی با حفر مکانیزه، ضروری می باشد؛ برای این منظور لازم است تا ضریب بهره وری ماشین حفر تونل مشخص شده تا براساس آن نرخ پیشروی ماشین تعیین شود. هدف از انجام این مطالعه تعیین ضریب بهره وری ماشین tbm باز، بر اساس سیستم های طبقه بندی سنگ (rmr و q) و نیروی نفوذ ماشین می باشد. برای این منظور مجم...
تخمین نرخ پیشروی ماشینهای حفر تونل، به منظور تعیین برنامة زمانی و برآورد هزینههای اجرایی در پروژههای تونلسازی با حفر مکانیزه، ضروری میباشد؛ برای این منظور لازم است تا ضریب بهرهوری ماشین حفر تونل مشخص شده تا براساس آن نرخ پیشروی ماشین تعیین شود. هدف از انجام این مطالعه تعیین ضریب بهرهوری ماشین TBM باز، بر اساس سیستمهای طبقهبندی سنگ (RMR و Q) و نیروی نفوذ ماشین میباشد. برای این منظور مجم...
BACKGROUND Tuberculosis immune reconstitution inflammatory syndrome (IRIS) is a common cause of deterioration in human immunodeficiency virus (HIV)-infected patients receiving tuberculosis treatment after starting antiretroviral therapy (ART). Potentially life-threatening neurological involvement occurs frequently and has been suggested as a reason to defer ART. METHODS We conducted a prospec...
BACKGROUND The immunopathogenesis of tuberculosis-associated immune reconstitution inflammatory syndrome (IRIS) remains incompletely understood, and we know of only 1 disease site-specific study of the underlying immunology; we recently showed that Mycobacterium tuberculosis culture positivity and increased neutrophils in the cerebrospinal fluid (CSF) of patients with tuberculous meningitis (TB...
BACKGROUND Diagnosis of tuberculous meningitis (TBM) is difficult. Rapid confirmatory diagnosis is essential to initiate required therapy. There are very few published reports about the diagnostic significance of 65 kD heat shock protein (hsp) in TBM patients, which is present in a wide range of Mycobacterium tuberculosis species and elicits a cellular and humoral immune response. In the presen...
Tingible body macrophages (TBM), long thought simply as scavengers of apoptotic lymphocytes, are located in the unique microenvironment of germinal centers in close proximity to antigen-retaining follicular dendritic cells (FDC). Observations that TBM endocytose FDC-iccosomal (immune-complex coated bodies) antigen suggested that TBM might present this antigen and help regulate the germinal cent...
The present study was designed to investigate Rv2623 antigen, a major dormancy regulon protein of Mycobacterium tuberculosis (MTB) in CSF of suspected latent and active tuberculous meningitis (TBM) patients. A total of 100 CSF samples from TBM (n = 31), suspected latent TBM (n = 22), and suitable noninfectious control subjects (n = 47) were collected and evaluated for Rv2623 antigen level using...
Modified Levinson's precipitation test was done in 64 cases of TBM, 54 cases of TBM with inconsistent CSF finding, and 32 cases of pyogenic meningitis. The test was positive in 93.7% cases of TBM (sensitivity, 93.7%), 85.5% cases of TBM with doubtful diagnosis and in 9.4% cases of pyogenic meningitis (specificity 90.6%) compared to 79.7%, 72.2% and 18.8% in original Levinson's test, respectivel...
RATIONALE Mustard gas primarily affects the eyes, skin, and particularly the respiratory tract. Tracheobronchomalacia (TBM) and air trapping are often observed in high-resolution computerized tomography (HRCT) scans of the chest of mustard gas-exposed patients. OBJECTIVES To examine the frequency and severity of TBM in a group of Iranian wartime mustard gas-exposed victims, and to investigate...
Background: Microbiological confirmation of tuberculous meningitis (TBM) remains problematic. We assessed the diagnostic performance of a modified Ziehl-Neelsen (MZN) staining method that showed promise in earlier studies. Methods: Patients evaluated for TBM in Shaanxi province, China, were prospectively enrolled from May, 2011 to April, 2013. Cerebrospinal fluid (CSF) specimens were evaluated ...
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