نتایج جستجو برای: a mixed

تعداد نتایج: 13471843  

Journal: :Psychology of Women Quarterly 2012

Journal: :Communications in Statistics - Simulation and Computation 2009
S. A. Ortega-Azurduy Frans E. S. Tan Martijn P. F. Berger

We apply a maximin criterion to examine the relative-efficiency (RE) of several Dq-optimal designs for a family of linear-mixed models. Incorrect specifications of the polynomial degree, size of the autocorrelation parameter, number of random parameters, and the correlation between random intercept and random slope are investigated. We found that the maximin Dq-optimal design encountered is hig...

Journal: :Plant physiology 1991
H A Stafford

Flavonoid evolution in land plants is discussed from an enzymic point of view, based on the present day distribution of the major subgroups of flavonoids in bryophytes, lower and higher vascular plants. The importance of varied functions in the origin of pathways with a series of sequential steps leading to end-products is considered; it is argued that the initial function is that of an interna...

2000
Adam Osseiran

The Analog and Mixed-Signal Boundary-Scan Standard (IEEE1149.4 hereafter referred as dot4) was developed to measure external discrete components in a mixed-signal Printed Circuit Assembly (PCA). This bus uses 4 of the same signals used today to support IEEE1149.1 compliant devices and systems. It uses two additional wires bus to perform analog monitoring and control. But testing a mixed-signal ...

Journal: :Physical review letters 2003
Robert M Gingrich Pieter Kok Hwang Lee Farrokh Vatan Jonathan P Dowling

When photons are sent through a fiber as part of a quantum communication protocol, the error that is most difficult to correct is photon loss. Here we propose and analyze a two-to-four qubit encoding scheme, which can recover the loss of one qubit in the transmission. This device acts as a repeater, when it is placed in series to cover a distance larger than the attenuation length of the fiber,...

Journal: :Plant physiology 1987
R B Ferreira D D Davies

Ribulose bisphosphate carboxylase from Lemna minor resembles the structure reported for the enzyme from other plants. When grown in the light, the enzyme appears to undergo little or no degradation, as measured by a double-isotope method. This situation is similar to that reported for wheat and barley, but is unlike that reported for maize, where the enzyme degrades at the same rate as total pr...

2014
Vignesh Muthusamy Firoz Hossain Nepolean Thirunavukkarasu Mukesh Choudhary Supradip Saha Jayant S. Bhat Boddupalli M. Prasanna Hari S. Gupta

Development of vitamin A-rich cereals can help in alleviating the widespread problem of vitamin A deficiency. We report here significant enhancement of kernel β-carotene in elite maize genotypes through accelerated marker-assisted backcross breeding. A favourable allele (543 bp) of the β-carotene hydroxylase (crtRB1) gene was introgressed in the seven elite inbred parents, which were low (1.4 µ...

Journal: :The Journal of biological chemistry 2002
Maarten Merkx Stephen J Lippard

Soluble methane monooxygenase (sMMO) has been studied intensively to understand the mechanism by which it catalyzes the remarkable oxidation of methane to methanol. The cluster of genes that encode for the three characterized protein components of sMMO (MMOH, MMOB, and MMOR) contains an additional open reading frame (orfY) of unknown function. In the present study, MMOD, the protein encoded by ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

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