نتایج جستجو برای: 05 mm and 1 mm
تعداد نتایج: 17266660 فیلتر نتایج به سال:
BACKGROUND Endoscopic parathyroidectomy and thyroidectomy were introduced into clinical practice in 1995. Concerns about the use of carbon dioxide insufflation in the neck exist owing to reports of potential adverse metabolic and hemodynamic changes. HYPOTHESIS Carbon dioxide insufflation in the neck may cause adverse effects on hemodynamic and blood gas levels. These adverse effects may refl...
BACKGROUND AND PURPOSE Multidetector CT imaging of the cervical spine performed with submillimeter collimation allows for the production of excellent quality multiplanar reformations and reconstructed axial images at any chosen section thickness. Currently there is no consensus on what images need to be reviewed for accurate diagnosis of cervical spine fractures. Our study assesses whether 1-mm...
Human aromatase is responsible for the last step of estrogen biosynthesis, for the aromatization of ring A of androstenedione (ASD) or testosterone. In this work the mechanism of aromatization was studied using gas phase and hybrid QM/MM calculations. It is shown that human aromatase can efficiently catalyze the aromatization process via a Compound I (or Compound II) mediated pathway. The natur...
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