Publicidad

Publicidad

becas.universia.netBiblioteca.Net

Buscar recursos:

Buscador Google

rss_1.0 Recursos de colección

arXiv (509,308 recursos)
This is one of the most extensive subject based repositories in the world in the field of physics, mathematics, astronomy, computer sciences and quantitative biology. This is the principal site with almost 20 mirror versions around the globe. The site is supported by an extensive collection of information and background documentation. An RSS feed is available for anyone interested in keeping up-to-date with newly added materials.

Mostrando recursos 121 - 140 de 4,680

121. Analytic approach to the evolutionary effects of genetic exchange - Cohen, Elisheva; Kessler, David A.; Levine, Herbert
We present an approximate analytic study of our previously introduced model of evolution including the effects of genetic exchange.

122. Frailty Index as a Major Indicator of Aging Processes and Mortality in Elderly: Results From Analyses of the National Long Term Care Survey Data - Kulminski, A.; Yashin, A.; Akushevich, I.; Ukraintseva, S.; Land, K.; Arbeev, K.; Manton, K.
To better understand mortality change with age capturing the variability in individuals' rates of aging, we performed comprehensive analysis of statistical properties of a cumulative index of age-associated disorders (deficits), called a "frailty index" (FI).

123. The response of amino acid frequencies to directional mutation pressure in mitochondrial genome sequences is related to the physical properties of the amino acids and to the structure of the genetic code - Urbina, Daniel; Tang, Bin; Higgs, Paul G.
The frequencies of A, C, G and T in mitochondrial DNA vary among species due to unequal rates of mutation between the bases.

124. Algorithmic and Complexity Results for Decompositions of Biological Networks into Monotone Subsystems - DasGupta, Bhaskar; Enciso, German Andres; Sontag, Eduardo; Zhang, Yi
The theoretical results include polynomial-time approximation algorithms as well as constant-ratio inapproximability results.

125. Sexual replication in the quasispecies model - Tannenbaum, Emmanuel
This paper develops a simplified model for sexual replication within the quasispecies formalism.

126. Comparative analysis of some models of mixed-substrate microbial growth - Narang, Atul
Several mathematical models have been developed to account for the genetic regulation of such systems, especially those resulting in diauxic growth.

127. Statistical Indicators of Collective Behavior and Functional Clusters in Gene Networks of Yeast - Zivkovic, Jelena; Tadic, Bosiljka; Wick, Nikolaus; Thurner, Stefan
We analyze gene expression time-series data of yeast S.

128. Physical origins of protein superfamilies - Zeldovich, Konstantin B.; Berezovsky, Igor N.; Sha, Eugene I.
In this work, we discovered a fundamental connection between selection for protein stability and emergence of preferred structures of proteins.

129. A p53 Oscillator Model of DNA Break Repair Control - Chickarmane, Vijay; Nadim, Ali; Ray, Animesh; Sauro, Herbert M.
In response to signals such as DNA damage, p53 controls the transcription of a series of genes that cause cell cycle arrest during which DNA damage is repaired, or triggers programmed cell death that eliminates possibly cancerous cells wherein DNA damage might have remained unrepaired.

130. Control of neural chaos by synaptic noise - Cortes, J. M.; Marro, J.; Torres, J. J.
We studied neural automata -or neurobiologically inspired cellular automata- which exhibits chaotic itinerancy among the different stored patterns or memories.

131. The simplest model of spatially distributed population with reasonable migration of organisms - Sadovsky, Michael
The simplest model of a smart spatial redistribution of individuals is proposed.

132. The Tangled nature model with inheritance and constraint: Evolutionary ecology restricted by a conserved resource - Laird, Simon; Jensen, Henrik Jeldtoft
The model has individual-based dynamics whilst incorporating species scale competitive constraints and a system scale resource constraint.

133. A Novel Lie Algebra of the Genetic Code over the Galois Field of Four DNA Bases - Sanchez, Robersy; Grau, Ricardo
By starting from the four DNA bases order in the Boolean lattice, a novel Lie Algebra of the genetic code is proposed.

134. A new formalism for calculation of the partition function of single stranded nucleic acids - Dimitrov, Roumen A.
The folding model deals with matches, mismatches, symmetric and asymmetric interior loops, stacked pairs in loop and dangling end regions, multi-branched loops, bulges and single base stacking that might exist at duplex ends or at the ends of helices.

135. The protein map of Synechococcus sp. PCC 7942 - the first overlook - Koksharova, Olga A.; Klint, Johan; Rasmussen, Ulla
Of 140 analyzed protein spots, 110 were successfully identified as 62 different proteins, many of which occurred as multiple spots on the gel.

136. Predictive Models for Characterization of Ecological Data - Tan, Can Ozan; Ozesmi, Uygar; Kurt, Bahtiyar
Although ARTMAP and ART-based models were introduced in early 70's they were not used in characterizing and classifying ecological observations.

137. Statistical modeling of primary Ewing tumours of the bone - Malakar, Sreepurna; Smarandache, Florentin; Bhattacharya, Sukanto
The basic premise underlying our methodology is that a primary bone tumour, if it is indeed Erwing's osteosarcoma, cannot increase in volume beyond some critical limit without showing metastasis.

138. Gene Copy Number and Cell Cycle Arrest - Ghosh, Bhaswar; Bose, Indrani
The cell cycle is an orderly sequence of events which ultimately lead to the division of a single cell into two daughter cells.

139. The prion-like folding behavior in aggregated proteins - Ji, Yong-Yun; Li, You-Quan; Mao, Jun-Wen; Tang, Xiao-Wei
We investigate the folding behavior of protein sequences by numerically studying all sequences with maximally compact lattice model through exhaustive enumeration.

140. Probability Models for Degree Distributions of Protein Interaction Networks - Stumpf, Michael P. H.; Ingram, Piers J.
The degree distribution of many biological and technological networks has been described as a power-law distribution.

Página de resultados:
Anterior  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  Siguiente