نتایج جستجو برای: cell transformation

تعداد نتایج: 1819301  

2015
Sinil Kim Byeong-Suk Ha Hyeon-Su Ro

Mushroom transformation requires a series of experimental steps, including generation of host strains with a desirable selective marker, design of vector DNA, removal of host cell wall, introduction of foreign DNA across the cell membrane, and integration into host genomic DNA or maintenance of an autonomous vector DNA inside the host cell. This review introduces limitations and obstacles relat...

1997
Jiin-Chang Shaw Ming-Hsien Tu

We construct the supersymmetric extensions of the Darboux-Bäcklund transformations (DBTs) for the Manin-Radul super KdV hierarchy using the super-pseudo-differential operators. The elementary DBTs are triggered by the gauge operators constructed from the wavefunctions and adjoint wavefunctions of the hierarchy. Iterating these elementary DBTs, we obtain not only Wronskian type but also binary t...

Journal: :Physical review letters 2003
E J Galvez P R Crawford H I Sztul M J Pysher P J Haglin R E Williams

We present direct measurements of a new geometric phase acquired by optical beams carrying orbital angular momentum. This phase arises when the transverse mode of a beam is transformed following a closed path in the space of modes. The measurements were done via the interference of two copropagating optical beams that pass through the same interferometer parts but acquire different geometric ph...

2008
Jiin-Chang Shaw Ming-Hsien Tu

We construct the supersymmetric extensions of the Darboux-Bäcklund transformations (DBTs) for the Manin-Radul super KdV hierarchy using the super-pseudo-differential operators. The elementary DBTs are triggered by the gauge operators constructed from the wave functions and adjoint wave functions of the hierarchy. Iterating these elementary DBTs, we obtain not only Wronskian type but also binary...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Roy G D'Andrade A Kimball Romney

This article presents a computational model of the process through which the human visual system transforms reflectance spectra into perceptions of color. Using physical reflectance spectra data and standard human cone sensitivity functions we describe the transformations necessary for predicting the location of colors in the Munsell color space. These transformations include quantitative estim...

Journal: :Ecology 2006
Craig A Stow Kenneth H Reckhow Song S Qian

Ecological data analysis often involves fitting linear or nonlinear equations to data after transforming either the response variable, the right side of the equation, or both, so that the standard suite of regression assumptions are more closely met. However, inference is usually done in the natural metric and it is well known that retransforming back to the original metric provides a biased es...

2008
Ming-Hsien Tu

We study Darboux-Bäcklund transformations (DBTs) for the q-deformed Korteweg-de Vries hierarchy by using the q-deformed pseudodifferential operators. We identify the elementary DBTs which are triggered by the gauge operators constructed from the (adjoint) wave functions of the hierarchy. Iterating these elementary DBTs we obtain not only q-deformed Wronskian-type but also binary-type representa...

2005
M. KAUKIČ

The problem considered in this article is: ‘for given finite system of convex polygons in the plane which have no transversal, find such homothety transformations of polygons (having fixed centres inside given polygons) with minimal similarity ratio c > 1 that the transformed system has a transversal’. We prove that in this ‘minimal configuration’, we can always find three polygons (two of them...

2008
David Ruppert Brian Aldershof IDavid Ruppert

This paper considers transformations in regression to eliminate skewness and heteroscedasticity of the response. We work with the "transform-both-sides" model where the relationship between the 'lledian response and the independent varibles has been identified, at least tentatively. To preserve this relationship, the response and the regression model are transformed in the same way. Extending t...

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