搜索结果: 1-15 共查到“理学 aggregates”相关记录31条 . 查询时间(0.063 秒)
Studies of Crystalline Aggregates of Pheophorbide and Bacteriopheophorbide by Electro-Absorption (Stark Effect) Spectroscopy and Powder X-ray Diffraction
GYROTRON 2ND HARMONIC SUBMILLIMETER WAVE
2016/5/23
Absorption and electro-absorption (Stark effect) spectra of polycrystalline and lyophillized samples of pheophorbides and bacteriopheophorbides have been measured in order to obtain information on the...
Numerical simulations of collisional disruption of rotating gravitational aggregates:Dependence on material properties
Asteroids Planetesimals Dynamics N-body simulations Collisional physics
2015/12/25
Our knowledge of the strengths of small bodies in the Solar System is limited by our poor understanding of their internal structures, and this, in turn, clouds our understanding of the formation and e...
ROTATION-DEPENDENT CATASTROPHIC DISRUPTION OF GRAVITATIONAL AGGREGATES
minor planets asteroids:general planets and satellites:formation planets and satellites:physical evolution
2015/12/25
We carry out a systematic exploration of the effect of pre-impact rotation on the outcomes of low-speed collisions between planetesimals modeled as gravitational aggregates. We use pkdgrav, a cosmolog...
Asteroids:equilibrium shapes of rotating gravitational aggregates
Asteroids shapes–Numerical simulations–Solar System evolution
2015/12/25
Many evidences lead us to think that a significant portion of asteroids are aggregates of boulders kept together by gravity, with little or no contribution from cohesive forces. The standard hydrodyna...
Numerical simulations of asteroids modelled as gravitational aggregates with cohesion
Asteroid structure Asteroid dynamics Asteroid satellites Collisional physics Impact processes
2015/12/25
Evidence is mounting that asteroids larger than a few hundred metres in diameter are gravitational aggregates of smaller, cohesive pieces. For example, images of 25143 Itokawa show aboulder-strewn sur...
A steady-state model of NEA binaries formed by tidal disruption of gravitational aggregates
Asteroids dynamics Satellites of asteroids
2015/12/25
We present results of a simulation of a steady-state binary near-Earth asteroid (NEA) population. This study combines previous work on tidal disruption of gravitational aggregates [Walsh, K.J., Richar...
Super-resolution fluorescence of huntingtin reveals growth of globular species into short fibers and coexistence of distinct aggregates.
Super-resolution fluorescence huntingtin reveals growth globular species into short fibers coexistence distinct aggregates
2015/12/11
Polyglutamine-expanded huntingtin, the protein encoded by HTT mutations associated with Huntington's disease, forms aggregate species in vitro and in vivo. Elucidation of the mechanism of growth of fi...
Soft spheres interacting via a hard core and a range of attractive and repulsive ‘soft-shoulder’ potentials self-assemble into clusters forming a variety of mesophases. We combine a mean-field theory ...
Scaling Relations and Optimization of Excitonic Energy Transfer Rates between One-Dimensional Molecular Aggregates
Scaling Relations Optimization of Exciton Energy Transfer Rates One-Dimensional Molecular Aggregates
2014/9/24
We theoretically study the distance, chain length, and temperature dependence of the electronic couplings as well as the excitonic energy transfer rates between onedimensional (1D) chromophore aggrega...
Clay Mineral Characterisation as a Durability Indicator for Basic Igneous Rock Road Aggregates
Clay Mineral Characterisation Durability Indicator Basic Igneous Rock Road Aggregates
2012/3/14
Clay Mineral Characterisation as a Durability Indicator for Basic Igneous Rock Road Aggregates.
Exciton transport in thin-film cyanine dye J-aggregates
Exciton transport thin-film cyanine dye J-aggregates
2012/2/29
We present a theoretical model for the study of exciton dynamics in J-aggregated monolayers of fluorescent dyes. The excitonic evolution is described by a Monte-Carlo wave function approach which allo...
A Statistical Model of Aggregates Fragmentation
Aggregates Fragmentation A Statistical Model
2011/9/13
A statistical model of fragmentation of aggregates is proposed, based on the stochastic propagation of cracks through the body. The propagation rules are formulated on a lattice and mimic two importan...
Enhanced shear separation for chiral magnetic colloidal aggregates
Enhanced shear separation chiral magnetic colloidal aggregates
2010/11/18
We study the designing principles of the simplest colloidal propeller, an architecture built from four identical spheres that can couple translation with rotation to produce controlled drift motion.By...
Numerically exact computation of the optical properties of light absorbing carbon aggregates for wavelength of 200 nm–12.2 μm
the optical properties light absorbing carbon wavelength of 200 nm–12.2 μm
2010/9/21
The optical properties of externally mixed light absorbing carbon (LAC) aggregates are computed over the spectral range from 200 nm–12.2 μm by use of the numerically exact superposition T-matrix metho...
Excitons in Molecular Aggregates with Lévy Disorder: Anomalous Localization and Exchange Broadening of Optical Spectra
Excitons in Molecular Aggregates Lévy Disorder Anomalous Localization Exchange Broadening of Optical Spectra
2010/10/21
We predict the existence of exchange broadening of optical lineshapes in disordered molecular
aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective elec...