نتایج جستجو برای: مواد fcc

تعداد نتایج: 94028  

Journal: :Acta Materialia 2022

To understand the effects of lattice mismatch on heteroepitaxial growth, we have studied equilibrium structure and orientation relationships (ORs) FCC films grown epitaxially substrates, using molecular dynamics simulations in conjunction with embedded atom method potentials. Three film/substrate systems been investigated, namely: Ag Cu, Ni Pb Al. These cover a significant range mismatch, from ...

Journal: :Journal of clinical and diagnostic research : JCDR 2015
Farideh Bastani Tayebe Ali Abadi Hamid Haghani

INTRODUCTION Healthcare quality is usually evaluated through analysing medical outcomes including neonatal readmission and patient and family satisfaction. Parental involvement in neonatal care is considered as one of the most important factors, which directly affects these outcomes. The aim of the present study was to determine the effect of family-centered care including maternal participatio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم پایه 1390

تاکنون توپولوژی چگالی بار در مورد بلورهای بسیاری مورد بررسی قرار گرفته است. در این پژوهش برای اولین بار توپولوژی چگالی بار در بلور خالص fcc-c60 و آلاییده fcc-n@c60 به منظور مطالعه پیوندهای موجود در این بلورها بررسی شده است. بلور خالص fcc-c60 در دمای اتاق و فشار معمولی در شبکه fcc با گروه فضایی fm3m متبلور می-شود. به منظور بدست آوردن ساختار الکترونی بلور fcc-c60 ابتدا ساختار هندسی این ترکیب شبیه...

2017
Giuseppe De Bernardo Maria Svelto Maurizio Giordano Desiree Sordino Marina Riccitelli

BACKGROUND Family-Centred Care (FCC) is recognized as an important component of all paediatric care, including neonatal care, although practical clinical guidelines to support this care model are still needed in Italy. The characteristics and services for families in Italian NICUs show a lack of organization and participation. METHODS The first aim was to compare satisfaction and stress level...

2001
KLAAS ESSELINK DAAN FRENKEL

A Monte Carlo simulation study is made of the phase diagram of the restricted primitive model and of the solid± liquid and solid± solid phase coexistence curves in particular. At low temperatures, there is liquid± bcc coexistence and with increasing density there is bcc± fcc coexistence. These coexistence curves end in a triple point (liquid± bcc ± fcc) above which only liquid± fcc coexistence ...

Journal: :Physical review. B, Condensed matter 1988
Said Máca Kambe Scheffler Christensen

We report results of total energy and electronic structure calculations of fcc and bcc silver bulk and surfaces. We find that under normal conditions (positive pressure) bcc silver is not stable. However, if silver is grown with a volume per atom & 10% larger than that of the well-known fcc silver, the total energy of the bcc structure becomes below that of fcc silver. For bcc (110) a surface s...

Journal: :CoRR 2011
Christoph Koutschan

We study the lattice Green’s functions of the face-centered cubic lattice (fcc) in up to six dimensions. We give computer algebra proofs of results that were conjectured by Guttmann and Broadhurst for the fourand fivedimensional fcc lattices. Additionally we derive a differential equation for the lattice Green’s function of the six-dimensional fcc lattice, a result that was not believed to be a...

2015
J. W. Yan X. F. Zhu G. P. Zhang

Plastic deformation behavior of Cu/Ni/W metallic multilayers with individual layer thickness ranging from 5 nm to 300 nm is investigated by nanoindentation testing. The experimental results reveal that the composite still exhibits indentation-induced plastic deformation instability and the loss of strain hardening ability at the nanometer scale even if the composite contains two kinds of layer ...

2013
Javier Ruiz-Martínez Andrew M Beale Upakul Deka Mathew G O'Brien Paul D Quinn J Fred W Mosselmans Bert M Weckhuysen

Fluid catalytic cracking (FCC) is the main conversion process used in oil refineries. An X-ray microscopy method is used to show that metal poisoning and related structural changes in the zeolite active material lead to a non-uniform core–shell deactivation of FCC catalyst particles. The study links the detrimental effect of V and Ni poisoning with zeolite destruction and dealumination in a spa...

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