搜索结果: 136-150 共查到“知识库 生物物理学”相关记录877条 . 查询时间(0.906 秒)
Hypoxic Cell Waves around Necrotic Cores in Glioblastoma: A Biomathematical Model and its Therapeutic Implications
Glioblastoma multiforme tumor hypoxia pseudopalisades invasion mathematical model
2012/5/2
Glioblastoma is a rapidly evolving high-grade astrocytoma that is distinguished pathologically from lower grade gliomas by the presence of necrosis and microvascular hiperplasia. Necrotic areas are ty...
Tensegrity and Motor-Driven Effective Interactions in a Model Cytoskeleton
Tensegrity Motor-Driven Effective Interactions Model Cytoskeleton Biological Physics
2012/4/24
Actomyosin networks are major structural components of the cell. They provide mechanical integrity and allow dynamic remodeling of eukaryotic cells, self-organizing into the diverse patterns essential...
Physical descriptions of the bacterial nucleoid at large scales, and their biological implications
Physical descriptions of the bacterial nucleoid large scales biological implications Biological Physics
2012/4/27
Recent experimental and theoretical approaches have attempted to quantify the physical organization (compaction and geometry) of the bacterial chromosome with its complement of proteins (the nucleoid)...
Noninvasive method for electrocardiogram recording in conscious rodents with the electro-conductive liquid electrodes
Noninvasive method electrocardiogram conscious rodents electro-conductive liquid electrodes Quantitative Methods
2012/4/28
Existing methods of heart rate recording in animals have shortcomings, which significantly obscure the influence of experimental factors on heart rate. We have developed a method of electrocardiograph...
Spatial and temporal dynamics of infected populations: the Mexican epidemic
Spatial temporal dynamics of infected populations Mexican epidemic Biological Physics
2012/4/24
Recently the A/H1N1-2009 virus pandemic appeared in Mexico and in other nations. We present a study of this pandemic in the Mexican case using the SIR model to describe epidemics. This model is one of...
Evolution of optimal Levy-flight strategies in human mental searches
Evolution of optimal Levy-flight strategies human mental searches Computer Science and Game Theory
2012/4/20
Recent analysis of empirical data [F. Radicchi, A. Baronchelli & L.A.N. Amaral. PloS ONE {\bf 7}, e029910 (2012)] showed that humans adopt L\'evy flight strategies when exploring the bid space in on-l...
A Mathematical Model for Estimating Biological Damage Caused by Radiation
cell density radiation protection radiation risk apoptosis mutation DNA repair mathematical model low-dose exposure irradiation rate Living object
2012/4/20
We propose a mathematical model for estimating biological damage caused by low-dose irradiation. We understand that the Linear Non Threshold (LNT) hypothesis is realized only in the case of no recover...
Phase-transitions, criticality, and life's emergence
field-controlled colloids proto-metabolic cycle driving long-range correlation organic takeover phase-transition
2012/4/28
Critical-like characteristics in open living systems at each organizational level (from bio-molecules to ecosystems) indicate that non-equilibrium phase transitions into absorbing states lead to self-...
Membrane-mediated protein-protein interaction: A Monte Carlo study
Membrane-mediated protein-protein interaction Monte Carlo study Biological Physics
2012/4/20
We investigate membrane-mediated interactions between transmembrane proteins using coarse-grained models. We compare the effective potential of mean force (PMF) between two proteins, which are always ...
Computational Potential Energy Minimization Studies on the Prion AGAAAAGA Amyloid Fibril Molecular Structures
Computational Potential Energy Minimization Amyloid Fibril Molecular Structures Biological Physics
2012/5/3
X-ray crystallography, NMR (Nuclear Magnetic Resonance) spectroscopy, and dual polarization interferometry, etc are indeed very powerful tools to determine the 3D structures of proteins (including the...
Numerical study of linear and circular model DNA chains confined in a slit: metric and topological properties
Numerical study linear and circular model DNA chains metric and topological properties Biological Physics
2012/4/20
Advanced Monte Carlo simulations are used to study the effect of nano-slit confinement on metric and topological properties of model DNA chains. We consider both linear and circularised chains with co...
Probabilistic and Flux Landscapes of the Phage $λ$ Genetic Switch
Probabilistic Flux Landscapes the Phage $λ$ Genetic Switch Biological Physics
2012/4/20
The phage $\lambda$ infection of an \textit{E. coli} cell has become a paradigm for understanding the molecular processes involved in gene expression and cell signaling. This system provides an exampl...
Some Exact Self-Similar Solutions to a Density-Dependent Reaction-Diffusion Model
Exact Self-Similar Density-Dependent Reaction-Diffusion Model Biological Physics
2012/4/20
In this paper, we investigated a density-dependent reaction-diffusion equation, $u_t = (u^{m})_{xx} + u - u^{m}$. This equation is known as the extension of the Fisher or Kolmogoroff-Petrovsky-Piscoun...
Routing Physarum with electrical flow/current
Physarum polycephalum Unconventional Computing Extended Analog Computer
2012/4/20
Plasmodium stage of Physarum polycephalum behaves as a distributed dynamical pattern formation mechanism who's foraging and migration is influenced by local stimuli from a wide range of attractants an...
Multiple barriers in forced rupture of protein complexes
Multiple barriers forced rupture of protein complexes Biological Physics
2012/5/3
Curvatures in the most probable rupture force ($f^*$) versus log-loading rate ($\log{r_f}$) observed in dynamic force spectroscopy (DFS) on biomolecular complexes are interpreted using a one-dimension...