搜索结果: 1-15 共查到“生物学 phase”相关记录17条 . 查询时间(0.14 秒)
Phase Separation of Lipid Membranes Analyzed with High-Resolution Secondary Ion Mass Spectrometry
Cell Membrane Membrane Microdomains Membrane Lipids Lipid Bilayers Phosphatidylcholines Membrane Proteins Spectrometry, Mass, Secondary Ion Nanotechnology
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2016/5/24
Lateral variations in membrane composition are postulated to play a central role in many cellular events, but it has been difficult to probe membrane composition and organization on length scales of t...
Phase angle and its determinants in healthy subjects: influence of body composition
adults bioelectrical impedance analysis body composition phase angle determinant factors
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2018/11/28
Background: The phase angle (PA) has been used as a prognostic marker in several clinical situations. Nevertheless, its biological meaning is not completely understood.
Three-liquid-phase extraction and separation of capsanthin and capsaicin from Capsicum annum L.
partition behaviour red pepper recovery three-liquid-phase system (TLPS)
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2014/3/28
The extraction of capsanthin and capsaicin from red pepper (Capsicum annum L.) was studied using a three-liquid-phase system (TLPS) of acetone/K2HPO4/n-hexane. When the system consisted of 22% (w/w) a...
Plasmon Excitation on a Metal Grating and its Phase Detection Based Biosensor Application
biosensors diffraction gratings excited states optical sensors plasmons refractive index 10< sup> -7< /sup>
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2016/12/2
A grating-based biosensor via phase detection is stated. The resolution will be 10-7 RIU in the state-of-the-art today. The workspace can be shifted in a large range while the sensor resolution can re...
Phase-transitions, criticality, and life's emergence
field-controlled colloids proto-metabolic cycle driving long-range correlation organic takeover phase-transition
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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-...
Multi-plectoneme phase of double-stranded DNA under torsion
Multi-plectoneme phase double-stranded DNA torsion Biomolecules
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2012/4/28
We use the worm-like chain model to study supercoiling of DNA under tension and torque. The model reproduces experimental data for a much broader range of forces, salt concentrations and contour lengt...
Phase lagging model of brain response to external stimuli - modeling of single action potential
phase lagging model brain response external stimuli action potential single neuron
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2012/4/28
In this paper we detail a phase lagging model of brain response to external stimuli. The model is derived using the basic laws of physics like conservation of energy law. This model eliminates the par...
Infinite-Period Phase Transition versus Nucleation in a Stochastic Model of Collective Oscillations
Infinite-Period Phase Transition Collective Oscillations
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2011/9/2
A lattice model of three-state stochastic phase-coupled oscillators has been shown by Wood et al. [Phys. Rev. Lett. 96, 145701 (2006)] to exhibit a phase transition at a critical value of the coupling...
Phase segregation and transport in a two species multi-lane system
Phase segregation and transport two species multi-lane system Statistical Mechanics
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2011/8/18
Abstract: We present a two channel driven lattice gas model with oppositely directed species moving on two parallel lanes with lane switching processes. We study correlated lane switching mechanism fo...
Robust entrainment of circadian oscillators requires specific phase response curves
Robust entrainment circadian oscillators
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2011/1/5
The circadian clocks keeping time of day in many living organisms rely on self-sustained biochemical oscillations which can be entrained by external cues, such as light, to the 24-hour cycle induced b...
Measurement of phase synchrony of coupled segmentation clocks
phase synchrony coupled segmentation clocks
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2011/1/6
The temporal behaviour of segmentation clock oscillations show phase synchrony via mean field like coupling of delta protein restricting to nearest neighbours only, in a configuration of cells arrange...
Neural Phase Oscillator Representations of Behavioral Stimulus-Response Models
Neural Phase Oscillator Representations Behavioral Stimulus Response Models
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2010/11/15
The activity of a collection of neurons can be represented by weakly-coupled non-linear phase oscillators satisfying Kuramoto's equations. In this article, we build such neural-oscillator models, part...
Bounds on the artificial phase transition for perfect simulation of repulsive point processes
Bounds artificial phase transition perfect simulation repulsive point processes
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2010/11/16
Repulsive point processes arise in models where competition forces entities to be more spread apart than if placed independently. Simulation of these types of processes can be accomplished using domin...
The pressure-temperature phase diagram of hen lysozyme at low pH
hen lysozyme high pressure fluorescence high pressure NMR thermodynamic stability on pressure-temperature axes free energy landscape
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2010/12/2
The equilibrium unfolding of hen lysozyme at pH 2 was studied as a function of pressure (0.1~700 MPa) and temperature (−10°C~50°C) using Trp fluorescence as monitor supplemented by variable pres...
大肠杆菌FC40系统静止期突变中的F因子转移The Occurrence of Actual F Factor Transfer during the Stationary-phase Mutation in Escherichia coli FC40
大肠杆菌FC40系统 适应性突变 F因子转移
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2007/12/31
摘要本研究采用大肠杆菌GM133 rifr细胞和营养收集细胞HB214 strr进行适应性突变实验。在混合30min和2d 后添加链霉素杀死GM133基因型细胞，继续培养5d后，在选择平板上出现了一定数量的lac+strr基因型回复突变菌落。根据这些突变菌落的数量，估计在lac+突变产生之前，GM133和HB214细胞之间的接合频率分别为0.07%和7.47%。在培养了7d的选择平板上添加含链霉素...