Search results for "Bilin"
showing 10 items of 377 documents
Oxygen-Controlled Bacterial Growth in the Sponge Suberites domuncula: toward a Molecular Understanding of the Symbiotic Relationships between Sponge …
2004
ABSTRACT Sponges (phylum Porifera), known to be the richest producers among the metazoans of bioactive secondary metabolites, are assumed to live in a symbiotic relationship with microorganisms, especially bacteria. Until now, the molecular basis of the mutual symbiosis, the exchange of metabolites for the benefit of the other partner, has not been understood. We show with the demosponge Suberites domuncula as a model that the sponge expresses under optimal aeration conditions the enzyme tyrosinase, which synthesizes diphenols from monophenolic compounds. The cDNA isolated was used as a probe to determine the steady-state level of gene expression. The gene expression level parallels the lev…
The primary structural photoresponse of phytochrome proteins captured by a femtosecond X-ray laser
2019
Phytochrome proteins control the growth, reproduction, and photosynthesis of plants, fungi, and bacteria. Light is detected by a bilin cofactor, but it remains elusive how this leads to activation of the protein through structural changes. We present serial femtosecond X-ray crystallographic data of the chromophore-binding domains of a bacterial phytochrome at delay times of 1 ps and 10 ps after photoexcitation. The data reveal a twist of the D-ring, which leads to partial detachment of the chromophore from the protein. Unexpectedly, the conserved so-called pyrrole water is photodissociated from the chromophore, concomitant with movement of the A-ring and a key signaling aspartate. The chan…
BiLingva redaktora adaptācija DPS 3.0 dzinim
2015
Biznesа mоdelēšаnа tiek plаši izmаntоtа prоgrаmmаtūrаs izstrādes prоcesоs un ļоti bieži, izstrādājоt kādu biznesа prоcesа mоdeli, vаr sаskаrties аr tо, kа vаlоdаs rīki nаv piemērоti, lаi аttēlоtu biznesа prоcesа mоdeli tieši tā, kā ir pаredzēts. Šī dаrbа ietvаrоs tikа izveidоts BiLingvа 3.0 vаlоdаs redаktоrs аr TDА Frаmewоrk pаlīdzību, lаi tаjā uzbūvētie mоdeļi būtu sаvietоjаmi аr infоrmācijаs sistēmu un precīzi аprаkstītu visus tās nоtikumus. Dаrbā tikа аprаkstītа BiLingvа vаlоdаs specifikācijа, tās pielietоšаnа, аpskаtītаs TDА Frаmewоrk iespējаs, identificētаs prоblēmаs un izveidоts redаktоrs, kаs nоdrоšinа sаskаrni аr DPS. Rezultātā аrī tikа veikti nepieciešаmie pаpildinājumi un pievienо…
Optimal extension of multispectral image demosaicking algorithms for setting up a one-shot camera video acquisition system
2022
Multispectral images are acquired using multispectral cameras equipped with CCD or CMOS sensors which sample the visible or near infrared spectrum according to specific spectral bands. A mosaic of multispectral MSFA filters is superimposed on the surface of the sensors to acquire a raw image called an MSFA image. In the MSFA image, only one spectral band is available per pixel, the demosaicking process is necessary to estimate the multispectral image at full spatio-spectral resolution. Motivated by the success of single-sensor cameras capturing the image in a single exposure that use CFA filters, we performed a comparative study of a few recent color image demosaicking algorithms and experi…
The Development of a Computer Science Dictionary, or How to Help Translate the Untranslatable
2006
Les termes du commerce dans les dictionnaires bilingues et plurilingues
2021
In this article, we analyze a corpus made up of two general French-Italian and Italian-French bilingual dictionaries and two multilingual dictionaries. We take into account, in particular, the macrostructure, the microstructure, the technical terminology and the phraseology of these dictionaries. Using a magnifying glass metaphorically, we focus on the treatment of the specialty language of commerce within the articles of the general bilingual dictionaries. With regard to plurilingual dictionaries, we try to show the lexicographical choices dictated by a requirement of extreme synthesis; the size of a dictionary, especially for schools, influences not only the convenience of consultation bu…
On the Ball-Marsden-Slemrod obstruction for bilinear control systems
2019
International audience; In this paper we present an extension to the case of $L^1$-controls of a famous result by Ball--Marsden--Slemrod on the obstruction to the controllability of bilinear control systems in infinite dimensional spaces.
VECTOR-VALUED FUNCTIONS INTEGRABLE WITH RESPECT TO BILINEAR MAPS
2008
Let $(\Omega, \Sigma, \mu)$ be a $\sigma-$finite measure space, $1\le p \lt \infty$, $X$ be a Banach space $X$ and ${\cal B} :X\times Y \to Z$ be a bounded bilinear map. We say that an $X$-valued function $f$ is $p-$integrable with respect to ${\cal B}$ whenever $\sup\{\int_\Omega\|{\cal B}(f(w),y)\|^pd\mu: \|y\|=1\}$ is finite. We identify the spaces of functions integrable with respect to the bilinear maps arising from H\"older's and Young's inequalities. We apply the theory to give conditions on $X$-valued kernels for the boundedness of integral operators $T_{{\cal B}}(f) (w)=\int_{\Omega'}{{\cal B}}(k(w,w'),$ $f(w'))d\mu'(w')$ from ${\mathrm L}^p(Y)$ into ${\mathrm L}^p(Z)$, extending t…
Weakly compact multilinear mappings
1997
The notion of Arens regularity of a bilinear form on a Banach space E is extended to continuous m-linear forms, in such a way that the natural associated linear mappings, E→L (m−1E) and (m – l)-linear mappings E × … × E → E', are all weakly compact. Among other applications, polynomials whose first derivative is weakly compact are characterized.
The λ-Error Order in Multivariate Interpolation
2005
The aim of this article is to introduce and to study a generalization of the error order of interpolation, named λ – error order of interpolation. This generalization makes possible a deeper analysis of the error in the interpolation process. We derived the general form of the λ – error order of interpolation and then we applied it for many choices of the functional λ.