PhET Simulation adalah alat pembelajaran yang mengubah rangkaian percobaan menjadi perangkat lunak interaktif berbasis multimedia dapat mensimulasikan kegiatan laboratorium, memungkinkan pengguna untuk menggunakan praktis di laboratorium nyata. Tujuan dari penelitian ini menentukan tingkat peluruhan isotop karbon-14 dan uranium-238 selama waktu paruh pertama, kedua, ketiga, serta keakuratan dil...

Background/Aim: Alopecia areata (AA), which is characterized by hair loss, an inflammatory autoimmune disease. Tumor necrosis factor-alpha (TNFα) a potent proinflammatory cytokine that has highly significant role in and immune responses. The aim of this study to evaluate whether there relationship between TNFα -238 G/A gene polymorphism AA the Turkish population. Methods: In case-control study,...

Data evaluation is a crucial step when it comes to the determination of accurate and precise isotope ratios computed from transient signals measured by multi-collector-inductively coupled plasma mass spectrometry (MC-ICPMS) coupled to, for example, laser ablation (LA). In the present study, the applicability of different data evaluation strategies (i.e. 'point-by-point', 'integration' and 'line...

This study investigated the association of tumor necrosis factor-α (TNF-α)-308, -238, and -863 polymorphisms with osteoarticular tuberculosis (OA-TB) prognosis in a Hebei population. Genomic DNA was extracted from venous blood samples of 120 OA-TB patients and 100 healthy volunteers. TNF-α-308, -238, and -863 were analyzed by PCR-restriction fragment length polymorphism; genotype and allele fre...

BACKGROUND Tumor necrosis factor alpha (TNF-α) has been involved in the pathogenesis of chronic hepatitis C virus (HCV) infection. Two polymorphisms at positions -308 and -238 in the TNF-α promoter region influence TNF-α expression and these have been linked to a number of infectious diseases. AIM To analyze the prevalence of the -308 and -238 TNF-α polymorphisms in a group of Mexican HCV-inf...