قدرت تفکیک دستگاه طیف‌نگار جرمی به صورت مستقیم شدت یون خروجی و انرژی آن بستگی دارد. مقدار تولید شده جریان باریکه الکترونی وابسته است. از جمله وظایف مدار کنترل چشمه برخورد تنظیم برای رسیدن بهینه می‌باشد. در ساخت پارامترهایی نظیر تثبیت آن، دقیق پتانسل الکتریکی لنز الکترودهای یونی بسیار حایز اهمیت این مقاله با قابلیت انتشار الکترون، پتانسیل نقاط طراحی ساخته شد. کنترلر بر روی طیف نگار 44Varian MAT ...

Introdução: Os desportos de combate referem-se a um conjunto modalidades individuais grande relevância no cenário desportivo mundial. A maioria dos é classificado por categorias peso, como tal, os atletas tendem reduzir ao máximo sua massa gorda e mesmo corporal para competir nas peso mais baixas. Objetivos: Compreender importância da DEXA na avaliação composição em combate. Metodologia: Foi re...

BACKGROUND Dunnigan type Familial Partial Lipodystrophy (FPLD) is characterized by loss of subcutaneous fat from the limbs and excessive accumulation on the visceral adipose tissue (VAT). Affected individuals have insulin resistance (IR), diabetes, dyslipidemia and early cardiovascular (CV) events, due to their imbalanced distribution of total body fat (TBF). Epicardial adipose tissue (EAT) is ...

Aims and objectives: To compare the accuracy of prediction of osteoporosis in digital panoramic radiography with Dual Xray absorptiometry (DEXA) scans and serum investigations such, as calcium, phosphorous, alkaline phosphatase in postmenopausal women. The objective of the study is to detect the appearance of eroded mandibular cortex (cortical shape), inferior cortical width appearance on Digit...

Background Osteoporosis is a common complication of Rheumatic diseases. The association between osteoporosis and rheumatoid arthritis clearly demonstrated while this still debated as well for the screening by Dual-Energy X-Ray Absorptiometry (DEXA) or to demonstrate an increased risk fracture on radiography in population Psoriatic Arthritis (PsA). prevalence fragility fractures reported medical...

The aim of this study was to further explore the use of magnetic resonance imaging (MRI), magnetic resonance angiography (MRA), and dual-energy X-ray absorptiometry (DEXA) to assess bone formation and blood circulation in a pedicled bone graft substitute. In 14 Wistar rats, initially 10 weeks old, heterogeneous demineralized femur bone matrix implants were wrapped in pedicled adductor thigh mus...

In the rat, urinary concentrating ability develops progressively during the third postnatal (P) week and nearly reaches adult level at weaning (P21) governed by a rise in circulating glucocorticoid. Elevated extracellular osmolality can lead to growth arrest of epithelial cells. We tested the hypothesis that supranormal exposure of rat pups to glucocorticoid before the endogenous surge enhances...

We developed and tested a novel method for perfusing parts of human liver to study uptake and handling of drug-targeting preparations. These preparations, designed for the treatment of liver fibrosis in man, have been extensively studied in animals, but little is known about the uptake and handling by human livers. Human liver tissue was obtained from livers procured from multiorgan donors and ...

OBJECTIVE To validate different methods for estimating HIV/Aids patients' body fat: total body skinfold thickness, central (trunk) skinfold thickness, peripheral (limb) skinfold thickness, waist circumference (WC) and waist-to-hip ratio (WHR). Dual-energy X-ray absorptiometry (DEXA) and computed tomography of the abdomen (CTA) were used as the gold standard. METHODS An analysis was done on 15...