نتایج جستجو برای: nip sic

تعداد نتایج: 13926  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده مکانیک 1394

در این پژوهش کامپوزیت های سرامیکی sic zrb2–25 vol% به منظور بررسی تاثیر متغیرهای فرآیند (دما، زمان و فشار پرس گرم) و اندازه ذره sic (20 نانومتر، 200 نانومتر و 5 میکرومتر) روی رفتارچگال شدن، متوسط اندازه دانه zrb2 و سختی ویکرز ساخته شدند. یک روش طراحی آزمایش (روش تاگوچی) برای شناسایی میزان تاثیر هر یک از متغیرها و همچنین تعیین شرایط بهینه مورد استفاده قرار گرفت. بر اساس تحلیل های آماری فشار و دم...

Journal: :Reactive & Functional Polymers 2021

New molecularly imprinted polymers (MIPs) for the recognition of barbiturates were synthesised by “bulk” polymerisation. These prepared using pentobarbital as template in combination with a novel Hamilton receptor functional monomer. The solution binding properties monomer assessed NMR titration experiments, showing high affinity and lower related compounds lacking ability to form many hydrogen...

2017
Yintang Yang Baoxing Duan Song Yuan Hujun Jia

Silicon Carbide (SiC) is believed to be a revolutionary semiconductor material for power devices of the future; many SiC power devices have emerged as superior alternative power switch technology, especially in harsh environments with high temperature or high electric field. In this chapter, the challenges and recent develop‐ ments of SiC power devices are discussed. The first part is focused o...

2015
PIERRE SIMON

INTRODUCTION This text is an introduction to the study of NIP (or dependent) theories. It is meant to serve two purposes. The first is to present various aspects of NIP theories and give the reader sufficient background material to understand the current research in the area. The second is to advertise the use of honest definitions, in particular in establishing basic results, such as the so-ca...

Journal: :Israel Journal of Mathematics 2022

We initiate a systematic study of the convolution operation on Keisler measures, generalizing work Newelski in case types. Adapting results Glicksberg, we show that supports definable and finitely satisfiable (or just definable, assuming NIP) measures are nice semigroups, classify idempotent stable groups as invariant type-definable subgroups. establish left-continuity map NIP theories, use it ...

Journal: :Math. Log. Q. 2014
Alexander Berenstein Evgueni Vassiliev

We study the theory T ∗ of the structure induced by parameter free formulas on a dense algebraically independent subset of a model of a geometric theory T . We show that while being a trivial geometric theory, T ∗ inherits most of the model theoretic complexity of T related to stability, simplicity, rosiness, NIP and NTP2. In particular, we show that T is strongly minimal, supersimple of SU-ran...

Journal: :Organic letters 1999
B R Huck J M Langenhan S H Gellman

[formula: see text] Homooligomers of beta-amino acids (S)-3-pyrrolidine-3-carboxylic acid (PCA) and (S)-nipecotic acid (Nip) were studied by circular dichroism (CD) in methanol. In each series, a profound change in the far-UV CD spectrum was observed from monomer to tetramer, but little change was observed from tetramer to hexamer. A comparable pattern is observed in the CD spectra of short pro...

2014
Christine A Caputo Manuela A Gross Vincent W Lau Christine Cavazza Bettina V Lotsch Erwin Reisner

Solar-light-driven H2 production in water with a [NiFeSe]-hydrogenase (H2ase) and a bioinspired synthetic nickel catalyst (NiP) in combination with a heptazine carbon nitride polymer, melon (CNx), is reported. The semibiological and purely synthetic systems show catalytic activity during solar light irradiation with turnover numbers (TONs) of more than 50 000 mol H2 (mol H2ase)-1 and approximat...

Journal: :Notre Dame Journal of Formal Logic 2012
Ehud Hrushovski Anand Pillay Pierre Simon

We prove (Proposition 2.1) that if μ is a generically stable measure in an NIP theory, and μ(φ(x, b)) = 0 for all b then for some n, μ(∃y(φ(x1, y)∧ ..∧φ(xn, y))) = 0. As a consequence we show (Proposition 3.2) that if G is a definable group with fsg in an NIP theory, and X is a definable subset of G then X is generic if and only if every translate of X does not fork over ∅, precisely as in stab...

2018
Guo-Bin Sano Hideaki Uchiyama Guo-Bin Zheng Hideaki Sano Yasuo Uchiyama

A carbon nanotube-enhanced SiC (CNT-SiC) coating was deposited on C/C composites to improve the oxidation resistance of C/C. The CNT-SiC coating was prepared by direct growth of CNTs on C/C surface at 700oC followed by deposition of SiC using chemical vapor deposition at 1150oC for 1 hour. SiC was deposited on the CNTs as well as the interface between CNTs and C/C, making CNTs strongly rooted o...

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