نتایج جستجو برای: راکتور بالارونده fcc

تعداد نتایج: 7184  

ژورنال: فرآیند نو 2017

کراکینگ کاتالیستی بستر سیال اساسی ترین واحد کراکینگ در پالایشگاه های بزرگ جهت تولید بنزین است. این فرایند، تغییرات زیادی را متحمل شده است. نقطه عطف مهم در تاریخ این فرایند، کراکینگ باقیمانده ها بود. امروزه حدود 20% از خوراک واحد های FCC را ته مانده های برج تقطیر اتمسفریک و خلا تشکیل می دهند. در این مقاله یک احیاگر دو مرحله ای صنعتی فرآیند شکست کاتالیستی بستر سیال به کمک دینامیک سیالات محاسباتی ...

Journal: :Academic medicine : journal of the Association of American Medical Colleges 2012
Henry N Young Jayna B Schumacher Megan A Moreno Roger L Brown Ted D Sigrest Gwen K McIntosh Daniel J Schumacher Michelle M Kelly Elizabeth D Cox

PURPOSE Factors that support self-efficacy in family-centered care (FCC) must be understood in order to foster FCC in trainees. Using social cognitive theory, the authors examined (1) how three supportive experiences (observing role models, practicing for mastery, and receiving feedback) influence self-efficacy with FCC during rounds and (2) whether the influence of these supportive experiences...

Journal: :Nature Communications 2020

2004
J-Y Chen C M Wang K-C Tsao Y-H Chow J-M Wu Jan Wu S-F Luo

Objective: To determine whether the distribution of Fcc receptor IIa, IIIa, and IIIb polymorphisms confers a risk factor for disease susceptibility, and correlates with the clinical characteristics and serological parameters of patients with SLE in Taiwan. Methods: Genotyping of Fcc receptors IIa H/R131, IIIa F/ V158, and IIIb NA1/NA2 was performed in 302 patients with SLE and 311 healthy blood...

Journal: :Physical review letters 2011
G I Tóth J R Morris L Gránásy

We address crystal nucleation and fcc-bcc phase selection in alloys using a multiphase field model that relies on Ginzburg-Landau free energies of the liquid-fcc, liquid-bcc, and fcc-bcc subsystems, and determine the properties of the nuclei as a function of composition, temperature, and structure. With a realistic choice for the free energy of the fcc-bcc interface, the model predicts well the...

Journal: :British journal of sports medicine 2005
F Vercruyssen R Suriano D Bishop C Hausswirth J Brisswalter

OBJECTIVES To investigate the effect of cadence selection during the final minutes of cycling on metabolic responses, stride pattern, and subsequent running time to fatigue. METHODS Eight triathletes performed, in a laboratory setting, two incremental tests (running and cycling) to determine peak oxygen uptake (VO2PEAK) and the lactate threshold (LT), and three cycle-run combinations. During ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
Robert S Hoy Mark O Robbins

Calculations of the work required to transform between bcc and fcc phases yield a high-precision bcc-fcc transition line for monodisperse point Yukawa (screened-Coulomb) systems. Our results agree qualitatively but not quantitatively with recently published simulations and phenomenological criteria for the bcc-fcc transition. In particular, the bcc-fcc-fluid triple point lies at a higher invers...

A. Nemati Kharat, R. Zafari

Current article describes application of zeolites in fluid catalytic cracking (FCC). The use of several zeolitic additives for the production light olefins and reduction of pollutants is described. Application of zeolites as fluid catalytic cracking (FCC) catalysts and additives due to the presence of active acid sites in the zeolite framework  increase the formation of desired cracking product...

Journal: :Investigative ophthalmology & visual science 2003
Harmohina Bagga David S Greenfield William Feuer Robert W Knighton

PURPOSE To evaluate the relationship between visual function and retinal nerve fiber layer (RNFL) measurements obtained with scanning laser polarimetry with variable corneal compensation (SLP-VCC) and optical coherence tomography (OCT). DESIGN Cross-sectional analysis of normal and glaucomatous eyes in a tertiary care academic referral practice. METHODS A commercial GDx nerve fiber analyzer...

Journal: :journal of nanostructures 2013
a. nemati kharat r. zafari

current article describes application of zeolites in fluid catalytic cracking (fcc). the use of several zeolitic additives for the production light olefins and reduction of pollutants is described. application of zeolites as fluid catalytic cracking (fcc) catalysts and additives due to the presence of active acid sites in the zeolite framework  increase the formation of desired cracking product...

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