搜索结果: 1-15 共查到“理学 sliding”相关记录16条 . 查询时间(0.068 秒)
Ice is sliding toward edges of Greenland Ice Sheet（图）
Ice toward edges Greenland Ice Sheet
2019/10/23
Ice on the Greenland Ice Sheet doesn’t just melt. The ice slides rapidly across its bed toward the ice sheet’s edges. As a result, ice is moving to high-melt marginal zones more rapidly than previousl...
Southwest sliding into a new normal:drier conditions
Southwest sliding new normal:drier conditions
2016/2/23
This is part 13 in a series on NSF's geosciences risk and resilience interest area. Please see parts one, two, three,four, five, six, seven, eight, nine, 10,&#...
We investigate a one-dimensional model describing the motion of liquid drops sliding down an inclined plane (the so-called quasi-static approximation model). We prove existenceand uniqueness of a solu...
Glacier beds can get slipperier at higher sliding speeds（图）
Glacier beds get slipperier higher sliding speeds
2014/12/30
AMES, Iowa – As a glacier’s sliding speed increases, the bed beneath the glacier can grow slipperier, according to laboratory experiments conducted by Iowa State University glaciologists.They say incl...
Sliding and peeling of histone during chromatin remodelling
Sliding peeling of histone chromatin remodelling Subcellular Processes
2011/8/3
Abstract: ATP-dependent chromatin remodeling enzymes (CRE) are bio-molecular motors in eukaryotic cells. These are driven by a chemical fuel, namely, adenosine triphosphate (ATP). CREs actively partic...
Anisotropic Sliding Dynamics, Peak Effect, and Metastability in Stripe Systems
Anisotropic Sliding Dynamics Peak Effect Stripe Systems
2010/11/18
A variety of soft and hard condensed matter systems are known to form stripe patterns. Here we
use numerical simulations to analyze how such stripe states depin and slide when interacting with a rand...
Using Monte-Carlo simulations, we deconvolved the sliding and hopping kinetics of GFP-LacI proteins on elongated DNA from their experimentally observed seconds-long diffusion trajectories. Our simulat...
Sliding Mode Control of Two-Level Quantum Systems
Sliding Mode Control Two-Level Quantum Systems
2010/10/18
This paper proposes a robust control method based on sliding mode design for two-level quantum
systems with bounded uncertainties. An eigenstate of the two-level quantum system is identified as a sli...
Stability of low-friction surface sliding of nanocrystals with rectangular symmetry and application to W on NaF(001)
low-friction surface sliding hexagonal lattices rectangular symmetry
2010/4/6
We investigate the stability of low-friction sliding of nanocrystal with rectangular atomic arrangement on rectangular lattices, for which analytical results can be obtained. We find that several inco...
Reduced glacier sliding caused by persistent drainage from a subglacial lake
Reduced glacier sliding persistent drainage subglacial lake
2010/2/3
We present velocity observations of a glacier outlet in Vatnajökull, Iceland, deduced from interferometric SAR (InSAR) data obtained during the ERS1/2 tandem mission in 1995–2000. More than a 50%...
Load-dependent sliding direction change of a myosin head on an actin molecule and its energetic aspects: Energy borrowing model of a cross-bridge cycle
myosin ATPase enthalpy production molecular machinery loose coupling Hill’s Formulation
2010/12/2
A model of muscle contraction is proposed, assuming loose coupling between power strokes and ATP hydrolysis of a myosin head. The energy borrowing mechanism is introduced in a cross-bridge cycle that ...
Lyapunov optimizing sliding mode control for linear systems with bounded disturbance
Lyapunov optimizing control sliding mode control
2010/9/10
The purpose of this treatment is the design of feedback control algorithms that asymptotically zero the states of linear systems. This objective is accomplished by extending the theory and application...
Thresholds in the sliding resistance of simulated basal ice
Thresholds sliding resistance simulated basal ice
2010/2/4
We report laboratory determinations of the shear resistance to sliding melting ice with entrained particles over a hard, impermeable surface. With higher particle concentrations and larger particle si...
On the friction and sliding wear of rubber/layered silicate nanocomposites
nanomaterials polymer composites rubber wear organoclay
2011/12/14
The dry sliding and friction behaviors of organoclay modified hydrogenated nitrile (HNBR) and ethylene/propylene/diene (EPDM) rubbers were studied using a pin (steel)-on-plate (rubber sheet) test conf...
Dynamics of Two Sliding Magnetic Surfaces
Sliding Nano Magnetic Surfaces Magnetic Friction Molecular Dynamic Monte Carlo
2010/9/29
We use Monte Carlo and Molecular Dynamics simulation to study a magnetic tip-sample interaction. Our interest is to understand the mechanism of heat dissipation when the forces involved in the system ...