نتایج جستجو برای: r31 r12

تعداد نتایج: 619  

Journal: :European journal of heart failure 2015
Shin Kadota John Carey Hans Reinecke James Leggett Sam Teichman Michael A Laflamme Charles E Murry Michael Regnier Gregory G Mahairas

AIMS Heart failure remains a leading cause of morbidity, hospitalizations, and deaths. We previously showed that overexpression of the enzyme ribonucleotide reductase (RNR) in cardiomyocytes increased levels of the myosin activator, 2-deoxy-ATP, catalysed enhanced contraction, and improved cardiac performance in rodent hearts. Here we used a swine model of myocardial infarction (MI) to test pre...

Journal: :Fermentation 2022

This study aimed to explore the dynamic variations of rumen fermentation characteristics and bacterial community composition during a 24 h in vitro fermentation. A total twenty-three samples were collected from original fluid (ORF, n = 3), at 12 (R12, 10), (R24, 10). Results showed that gas production, concentrations microbial crude protein, ammonia nitrogen, individual volatile fatty acids (VF...

2014
F. Peruzzi G. Lampugnani

Discharge gas temperature value is an indicator of compressor safe operating conditions, particularly on R12 and R502 commercial applications. These refrigerants will be replaced very soon by R134a and R22 respectively, also if R22 is not considered a final solution. High discharge temperatures are typical in LBP-R22 hermetic compressors operating at low evaporating temperature as low as -40"C;...

2015
JOAN C. ARTÉS JAUME LLIBRE NICOLAE VULPE

A quadratic polynomial differential system can be identified with a single point of R12 through the coefficients. Using the algebraic invariant theory we classify all the quadratic polynomial differential systems of R12 having an integrable saddle. We show that there are only 47 topologically different phase portraits in the Poincaré disc associated to this family of quadratic systems up to a r...

2004
Paul M. Anglin Robin Wiebe

Using a repeat sales data set, this paper tests whether a single small seller can influence the selling price of their house. We find that this influence exists and that it dominates the influence of commonly-used market conditions. Since the estimated magnitude of this effect is much higher than expected, we verify the estimate using several supplementary tests. JEL: C78, D80, R21, R31

Journal: :The Journal of chemical physics 2008
Edward F Valeev T Daniel Crawford

To approach the complete basis set limit of the "gold-standard" coupled-cluster singles and doubles plus perturbative triples [CCSD(T)] method, we extend the recently proposed perturbative explicitly correlated coupled-cluster singles and doubles method, CCSD(2)(R12) [E. F. Valeev, Phys. Chem. Chem. Phys. 8, 106 (2008)], to account for the effect of connected three-electron correlations. The na...

In this paper, the performance of an ejector cooling system and the effect of the following different working fluids such as water, ammonia, R134a, R141b, R12, R600 and R245fa are described and the effects of cycle parameters on the consumed heat and work and COP are studied. This cycle with the working fluid R141b has the least COP while the working fluid R₁₂ in comparison with the other worki...

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