Bu çalışmada AISI 1020 çeliği 950 °C de yerli Baybora-2 borlama tozu kullanılarak 2, 4 ve 6 saat sürelerde katı işlemine tabi tutulmuştur. Numunelerin içyapıları optik mikroskop incelenmiştir. Borlama neticesinde yüzeyde oluşan bor tabakalarının kalınlık sertlik değerleri Mikrovickers ölçme cihazı belirlenmiştir. çeliğinin içyapısının ferrit perlit yapılarından oluştuğu tespit edilmiştir. Bor t...

BACKGROUND There is a lack of evidence regarding the effect of dose, pattern and timing of prenatal alcohol exposure and behaviour problems in children aged 2 years and older. METHODS A 10% random sample of women delivering a live infant in Western Australia (1995-96) were invited to participate in an 8-year longitudinal survey (78% response rate n = 2224); 85% were followed-up at 2 years, 73...

Thrombin is the key serine protease of the coagulation cascade and a potent trigger of protease-activated receptor 1 (PAR1)-mediated platelet aggregation. In recent years, PAR1 has become an appealing target for anticoagulant therapies. However, the inhibitors that have been developed so far increase bleeding risk in patients, likely because they interfere with endogenous PAR1 signaling in the ...

Using archival Chandra data we studied the X-ray emission properties of PSR B2224+65 and its environment. Albeit limited by photon statistics the spectral analysis suggests that the bulk of the emission from PSR B2224+65 is non-thermal. Fitting a power-law to the observed energy spectrum yields a photon index of Γ = 1.58 +0.43 −0.33. The possible origin of the non-thermal pulsar emission is dis...

AIMS Sex differences in visuospatial ability as well as episodic memory have been reliably demonstrated, irrespective of alcoholism. Studies in alcoholics have consistently documented cognitive deficits in visuospatial ability, problem solving and memory function. This cross-sectional, population-based study examined if sex differences in cognitive performance could be impacted by alcohol consu...

BACKGROUND AND PURPOSE The cost of pediatric stroke care has received little attention, but the available data suggest it is expensive. To determine the cost of acute stroke, we analyzed a US national database. Method- We used the Kids' Inpatient Database (KID2003) to determine the hospital-based costs of acute stroke in children ages 3 months to 20 years. Discharges were selected if the first ...

OBJECTIVES To determine if there is an increased risk of admission to hospital for various diseases among vinyl chloride monomer (VCM) workers. METHODS 2224 workers with occupational exposure to VCM were identified for occurrence of disease based on a search of hospital computer files on labour insurance. These data were compared with those of workers manufacturing optical equipment and motor...

Recently, published studies have reported conflicting results regarding the association between efavirenz exposure and the risk of suicidality among patients with human immunodeficiency virus. The objective of this analysis was to compare the rate of suicidality among patients initiating efavirenz-containing versus efavirenz-free antiretroviral (ARV) regimens.This retrospective cohort study use...

BACKGROUND Patients with chronic obstructive pulmonary disease (COPD) are at elevated risk of pneumococcal infection. A 13-valent pneumococcal conjugate vaccine (PCV13) was approved for protection against invasive disease and pneumonia caused by Streptococcus pneumoniae in adults. This study estimated the incremental cost-effectiveness ratio (ICER) of vaccinating COPD patients ≥50 years old wit...

BACKGROUND The relationship between domestic funding for selected conditions to the Centers for Disease Control and Prevention (CDC) and the burden of disease and disability in the United States was assessed systematically. METHODS Using mortality, years of potential life lost (YPLLs), disability-adjusted life years (DALYs), hospital days, hospital discharges, and direct medical costs of cond...