نتایج جستجو برای: parr

تعداد نتایج: 868  

Journal: :Logic: Jurnal rancang bangun dan teknologi terapan 2022

This work primarily investigated the pyrolysis of smalls scale fixed bed reactor using plastic wastes type LDPE during slow (non-isothermal) in a batch to assess effect different temperatures on product yield and heating value. The calorie bomb Parr Instrument was performed value pyro-oil at 250, 275, 300oC. obtained higher 300 oC while increased temperature will affect increase pyro-oil. highe...

This study was carried out to investigate the effects of starvation and feeding regimes on growth performance, haematological and biochemical parameters of blood and body composition of Caspian brown trout parr. For this purpose, 900 fish (average weight: 12.5±1 g) were stocked in 300-l tanks (18 tanks at a stocking rate of 50 fish in each tank) using an open system. Six experimental groups com...

2013
Diego Carnaroglio Katia Martina Giovanni Palmisano Andrea Penoni Claudia Domini Giancarlo Cravotto

A fast and efficient protocol for the synthesis of N,N'-disubstituted urea derivatives from alkyl halides and primary or secondary amines has been developed. The synthetic pathway combines nucleophilic substitutions and a Staudinger-aza-Wittig reaction in the presence of polymer-bound diphenylphosphine under 14 bar of CO2 pressure and has been performed in a one-pot two-step process. The protoc...

Journal: :Molecules 2017
Diana García-Pérez Concepción López Rosa M Claramunt Ibon Alkorta José Elguero

In this paper, we report the anisochrony of the fluorine atoms of a CHF₂ group when linked to a pyrazole ring. The pyrazole is part of (4S,7R)-7,8,8-trimethyl-4,5,6,7-tetrahydro-4,7-methano-2H-indazole also known as (4S,7R)-campho[2,3-c]pyrazole, which has two stereogenic centers. Gauge-Independent Atomic Orbital (GIAO)/Becke, 3-parameter, Lee-Yang-Parr (B3LYP)/6-311++G(d,f) calculated 19F chem...

Journal: :Infection and immunity 1971
M Bendinelli

The effect of neonatal infection with Friend virus (FV) and Rowson-Parr virus (RPV) on the maturation of the capacity to respond to sheep red cells, as measured by the numbers of hemolytic plaque-forming cells in the spleen, was investigated in BALB/c mice. Both viruses affected immunological maturation but there were significant differences between their effects. The development with age of th...

Journal: :Science 2007
Ethan C Garner Christopher S Campbell Douglas B Weibel R Dyche Mullins

Multiple unrelated polymer systems have evolved to partition DNA molecules between daughter cells at division. To better understand polymer-driven DNA segregation, we reconstituted the three-component segregation system of the R1 plasmid from purified components. We found that the ParR/parC complex can construct a simple bipolar spindle by binding the ends of ParM filaments, inhibiting dynamic ...

2013
Sakiko Fukuda-Parr Alicia Ely Yamin

This paper presents a brief overview of the Power of Numbers project (the “Project”), an independent research initiative involving 17 scholars and coordinated by Sakiko Fukuda-Parr (The New School) and Alicia Ely Yamin (Harvard University). It arose out of a shared concern amongst the 17 participating scholars with the need to more fully understand the consequences of the Millennium Development...

2012
J. A. Vergés P. L. de Andres E. San-Fabián A. Guijarro

The appearance of ferromagnetic correlations among π electrons of phenanthrene (C14H10) molecules in the herringbone structure is proven for K doped clusters both by ab initio quantum-chemistry calculations and by the direct solution of the many-body Pariser-Parr-Pople Hamiltonian. Magnetic ground states are predicted for one or three additional electrons per phenanthrene molecule. These result...

1997
Foster J. Provost Tom Fawcett

Applications of inductive learning algorithms to realworld data mining problems have shown repeatedly that using accuracy to compare classifiers is not adequate because the underlying assumptions rarely hold. We present a method for the comparison of classifier performance that is robust to imprecise class distributions and misclassification costs. The ROC convex hull method combines techniques...

2002
Mark Keil John T. Slankas Aron Kuppermann Arthur Amos Noyes

Differential cross sections for He-Ar scattering at room temperature have been measured. The experimental consistency of these measurements with others performed in different laboratories is demonstrated. Despite this consistency, the present van der Waals well depth of 1.78 meV, accurate to 10%, is smaller by 20% to 50% than the experimental values obtained previously. These discrepancies are ...

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