نتایج جستجو برای: NCO

تعداد نتایج: 550  

Journal: :Astronomy and Astrophysics 2021

Little is known about the chemistry of isocyanates (compounds with functional group R-N=C=O) in interstellar medium, as only four them have been detected so far: isocyanate radical (NCO), isocyanic acid (HNCO), N-protonated (H$_2$NCO$^+$) and methyl (CH$_3$NCO). The molecular cloud G+0.693-0.027, located Galactic Centre, represents an excellent candidate to search for new since it exhibits high...

Journal: :Investigative ophthalmology & visual science 2010
Zhihong Hu Michael D Abràmoff Young H Kwon Kyungmoo Lee Mona K Garvin

PURPOSE To develop an automated approach for segmenting the neural canal opening (NCO) and cup at the level of the retinal pigment epithelium (RPE)/Bruch's membrane (BM) complex in spectral-domain optical coherence tomography (SD-OCT) volumes. To investigate the correspondence and discrepancy between the NCO-based metrics and the clinical disc margin on fundus photographs of glaucoma subjects. ...

2011
Jin Li Yijun Luo Mao Tian

In this paper we propose parallel loop filter (LPF) and Number Controlled Oscillator (NCO) of carrier tracking loop in all-digital parallel receiver (APRX), according to the theoretical derivation of LPF and NCO in serial receiver. The Monte Carlo simulation results show that, the acquisition time, phase error response performance and tracking range of parallel LPF and NCO are better than that ...

1995
Steven S. Brown H. Laine

We report the first measurement of the vibrationaland rotational-state distributions in the NCO fragment resulting from photolysis of HNCO. Recent studies have drawn conclusions about the photochemistry of HNCO and the vibrational distribution in the NCO fragment from observations of the kinetic energy distribution of the H atom produced in this photolysis; however, there has been no direct obs...

Journal: :Catalysts 2022

Nickel-cobalt spinel catalyst (NCO) is a promising for air oxidation of humic acid, which typical natural refractory organic matter and precursor toxic disinfection by-products. In this study, reductive etchers, NaBH4 or Na2SO3, were used to adjust the NCO surface structure increase performance. The modified (NCO-R) was characterized, relationship between its intrinsic properties catalytic path...

2015
Amy L Williams Giulio Genovese Thomas Dyer Nicolas Altemose Katherine Truax Goo Jun Nick Patterson Simon R Myers Joanne E Curran Ravi Duggirala John Blangero David Reich Molly Przeworski

Although the past decade has seen tremendous progress in our understanding of fine-scale recombination, little is known about non-crossover (NCO) gene conversion. We report the first genome-wide study of NCO events in humans. Using SNP array data from 98 meioses, we identified 103 sites affected by NCO, of which 50/52 were confirmed in sequence data. Overlap with double strand break (DSB) hotsp...

2010
Johannes Jäschke Sigurd Skogestad

This paper reviews the role of self-optimizing control (SOC) and necessary conditions of optimality tracking (NCO tracking). We argue that self-optimizing control is not an alternative to real-time optimization (RTO), NCO tracking or model predictive control (MPC), but is to be seen as complementary. In self-optimizing control we determine controlled variables (CV), that keep the process close ...

2005
Daniel Gonzales John Hollywood Gina Kingston David Signori

The RAND Corporation is a nonprofit research organization providing objective analysis and effective solutions that address the challenges facing the public and private sectors around the world. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors. All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical ...

2010
E. C. Rea

A spectral survey of NCO absorption near the P1 + 'Qli head of the [A 2Z +(00°0)«-A'J/71<00I0)] band was obtained at 1450°K, 0.6 atm using a remotely located cw ring dye laser source and a shock tube. Mixtures of hydrogen cyanide, oxygen and nitrous oxide diluted in argon were shock heated to provide a reproducible steady-state concentration of NCO, and narrow-line absorption was measured in re...

2016
E. Yurtsever F. A. Gianturco R. Wester

The existence of NCO(-) anions in the interstellar medium (ISM) has been suggested and searched for over the years but without any formal definitive sighting of that molecule. We discuss in this work the possible formation of either NCO(-) directly or of NCO neutral as a precursor to NCO(-) formation by electron attachment. We follow simple, gas-phase chemical reactions for which the general fe...

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