نتایج جستجو برای: روش sn
تعداد نتایج: 394362 فیلتر نتایج به سال:
The structure and vibrational dynamics of room-temperature-grown nanoscale Sn/amorphous (a-!Si multilayers have been studied by x-ray diffraction, Raman scattering, Sn Mössbauer spectroscopy, and Sn nuclear-resonant inelastic x-ray scattering ~NRIXS! of synchrotron radiation. With increasing Sn-layer thickness, the formation of b-Sn was observed, except at the Sn/Si interfaces, where a 10-Å-thi...
INTRODUCTION Systemic lupus erythematosus (SLE) is a chronic inflammatory condition with multisystem involvement. One of the key features of the disease is the upregulation of type I interferons, resulting in the so-called "interferon signature". Recent flow cytometric and transcriptomic studies identified Sialoadhesin (Sn, CD169) as an important interferon-induced blood monocyte biomarker in d...
The substantia nigra (SN) is crucial to the propagation of seizures in kindled rats and in other experimental seizure models. However, the mechanisms by which the SN acts to facilitate the propagation of seizures are unknown. To investigate these mechanisms we quantified the activity of SN neurons during seizures in kindled and naive rats in a paralyzed, ventilated state and examined the relati...
کارآیی روش میکرواستخراج مایع-مایع پخشی و کروماتوگرافی گازی با آشکار ساز فوتومتر شعله ای (dllme-gc-fpd) برای تفکیک ترکیبات بوتیل و فنیل تیندر نمونه های آبی بعد از مشتق سازی با سدیم تترااتیل بورات (nabet4) مورد ارزیابی قرار گرفت. بعضی از پارامترهای مهم مثل ph، میزان (nabet4)، زمان مشتق سازی، نوع و حجم حلال های استخراج کننده و پخش کننده زمان استخراج و اثر نمک برآورد و بهینه سازی شد. تحت شرایط به...
هدف: پژوهش حاضر با هدف تحلیل و بررسی پیامدهای شبکه‌سازی سیاسی در نظام سیاست‌گذاری سازمان‌های دولتی استان لرستان انجام پذیرفت.طراحی/ روش‌شناسی/ رویکرد : دارای رویکردی آمیخته است که از نظر هدف، کاربردی حیث ماهیت روش، توصیفی پیمایشی است. مشارکت‌کنندگان را مدیران تشکیل می‌دهند استفاده اصل کفایت نظری روش نمونه‌گیری هدفمند 16 نفر آنان به عنوان اعضای نمونه انتخاب شدند. بخش کیفی برای گردآوری داده مص...
Several previous studies reported that sn-2 acyl lysophosphatidylcholines (LPCs) undergo rapid isomerization due to acyl migration, especially at physiological pH and temperature. However, these studies have been carried out using mostly sn-2 palmitoyl LPC, whereas the naturally occurring sn-2 LPCs are predominantly unsaturated. In this study, we investigated the acyl migration in four naturall...
The immune suppression of sentinel lymph node (SN) is directly influenced by primary tumors. It has been reported that the T-helper type 1 (Th1) to T-helper type 2 (Th2) ratio or T-cytotoxic type 1 (Tc1) to T-cytotoxic type 2 (Tc2) ratio of lymph node lymphocytes could be used to evaluate direct immunological circumstances. We attempted to evaluate the Th1 to Th2 cell and Tc1 to Tc2 cell balanc...
Tin (Sn) is a key industrial material in coatings on various components in the electronics industry. However, Sn is prone to the development of filament-like whiskers, which is the leading cause of many types of damage to electronics reported in the last several decades. Due to its properties, a tin-lead (Sn-Pb) alloy coating can mitigate Sn whisker growth. However, the demand for Pb-free surfa...
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