J. f n f .(1992) 110, 40-420 Anisotropy and coupled free oscillations:simplified models and zyxwvuts surface wave observations Jeffrey Park and Yang Yu zyxwvutsrq Department of Geology and Geophysics, Yale Llniversitv, PO Box 6666, New Haven, Connecticut 06511, U S
Jul 12, 2020 · Abstract. Photopolymerization of Langmuir monolayers composed of bifunctional acrylic liquid crystalline (LC) compounds was observed in situ by polarizing optical microscopy. In a dark state, monolayers of the LC compounds formed at an airwater or liquidliquid interface exhibited liquid-like fluidity and in-plane optical anisotropy because of the coherent molecular tilt from the surface normal. A study of the slope probability density function of the Radar observations of the sea surface at C-Band and small incidence angles are used to investigate some properties of the surface slope probability density function (pdf). The method is based on the analysis of the variation of the radar cross-section with incidence in situ spectral measurements of ocean waves from a free-drifting buoy to
of the surface BRDF and all available cloud-free observa-tions are used to constrain the model. While, at present, as little as a single observation can be used, retrievals based on less than three observations are flagged as the absolutely lowest quality product and any retrievals using the backup Anisotropy-Related Machining Characteristics in Ultra Apr 04, 2020 · Deformation behavior at grain levels greatly affects the machining characteristics of crystalline materials. In the present work, we investigate the influence of material anisotropy on ultra-precision diamond cutting of single crystalline and polycrystalline copper by experiments and crystal plasticity finite element simulations. Specifically, diamond turning and in situ SEM orthogonal cutting
from the free surface of caved rocks, and C is a constant that can be obtained by in situ or laboratory tests. 2.2. Shear Failure at Isotropic Surrounding Rocks. For the cylindrical excavation (Figure 2(a)), the in situ stress and redistributed local stress are illustrated in Figures 2(b) and 2(c), respectively. Such redistributed local stress Deformation in Rutford Ice Stream, West Antarctica In Situ Measurements of Ice Anisotropy. There are many seismic methods for studying elastic anisotropy using both body waves and surface waves (e.g. Reference Brisbourne, Stuart and Kendall Brisbourne and others, 1999; Reference Kendall, Jolley, Barr, Walsh and Knipe Kendall and others, 2007). A potential problem with P-wave studies is the
In order to mitigate landslide risks, monitoring of ground water is essential. Previous indoor experiments suggest that the self-potential approach has an advantage to Direct Observation of a Localized Magnetic Soliton in a We first characterized our samples ex situ using ferro-magnetic resonance spectroscopy, both directly after layer deposition and after STNO and membrane fabrication. The effective anisotropy field of the CoNi free layer was 0H eff ¼0ðH K M sÞ¼0.25T , with 0H K ¼0.99T and 0M s ¼ 0.74 T, indicating a strong perpendicular
Knowledge of the occurrences of water films on minerals is critical for global biogeochemical and atmospheric processes, including element cycling and ice nucleation. The underlying mechanisms controlling water film growth are, however, misunderstood. Using infrared nanospectroscopy, amplitude-modulated atomic force microscopy, and molecular simulations, we show how water films grow from water In Situ Observation of the Electrochemical Lithiation of a Dec 10, 2010 · We report the creation of a nanoscale electrochemical device inside a transmission electron microscopeconsisting of a single tin dioxide (SnO2) nanowire anode, an ionic liquid electrolyte, and a bulk lithium cobalt dioxide (LiCoO2) cathodeand the in situ observation of the lithiation of the SnO2 nanowire during electrochemical charging. Upon charging, a reaction front propagated
In situ stresses Consider an element of rock at a depth of 1,000 m below the surface. The weight of the vertical column of rock resting on this element is the product of the depth and the unit weight of the overlying rock mass (typically about 2.7 tonnes/m3 or 0.027 MN/m3). Hence the vertical stress on the element is 2,700 tonnes/m2 or 27 MPa. In situ behaviour of a stiff layered clay subject to Mar 02, 2007 · Interpretation of the patterns of behaviour exhibited by the test observations will be aided by the results of a finite element simulation of the experiment. A three-dimensional coupled THM analysis has been performed in order to incorporate the anisotropic properties of the clay and the anisotropy of the in situ stress state.
Mar 05, 2015 · In situ observation of biotite (001) surface dissolution at pH 1 and 9.5 by advanced optical microscopy agreement with the above consideration the variability of biotite reactivity is an intrinsic factor of its crystalline anisotropy, i.e., surface energy variance, and thermodynamic parameters, such as activation energy, are not In situ observation of magnetic orientation process of Apr 01, 2008 · An in situ microscopic observation of the magnetic orientation process of feeble magnetic fibers was carried out under high magnetic fields of up to 10 T using a scanning laser microscope. In the experiment, carbon fibers and needle-like titania fibers with a length of 1 to 20 m were used. The fibers were observed to gradually orient their axes parallel to the direction of the
Feb 28, 2021 · The resulting smart surface transfers from a flat topography to a predefined structure of nano-steps upon heating. During this recovery process, the nano-steps grow out of the surfaces resulting in a surface with frictional anisotropy, which is characterized in situ by an atomic force microscopy. Surface Magnetic Anisotropy - an overview ScienceDirect Table 2. Magnetic surface anisotropy constants, K s, and surface anisotropy energies per atom, e s, for selected surfaces (interfaces).Data from sandwich samples on single crystal substrates. Surface energy is defined as =K s cos 2 , where is the angle between magnetization and surface normal (Néel notation). Data for Ni(111)/Cu, Co(0001)/Cu and Co(0001)/Au from the pseudomorphic range
Aug 01, 2008 · Hence the coherent structures do indeed carry more anisotropy than the remaining turbulent fluctuations. Furthermore, at horizontal wave vectors where energetic patterns are dominant, the ratio E V /E H takes values close to 0.2, representative of the ratio E V /E H based on the total LES flow and on in situ measurements. UAV-based multi-spectral/multi-looking observations for observations for Surface BRDF characterization 20/02/2020 - University La Sapienza, Rome (Italy) The level of surface anisotropy is quantitatively described by the BRDF whose knowledge is remote sensing observations there is currently a lack of extensive in-situ validation data to assess
If at least seven observations are availablea high quality full inversion is attempted using this , analytical solution. However, high quality is not just based on the number of observations. Of more importance is ability of the available angular observations to adequately capture the surface anisotropy of the surface. gji 5200 LRseismically active faults breaking, or nearly breaking, the free surface. PFS orientations are inuenced by both regional compressional stress and by nearby faults. It is an effective way to study detailed spatial distribution of crustal compressional stress by shear wave anisotropy with dense seismograph network.
anisotropy is observed to pervade almost all in situ rocks independent of rock type, tectonic history, stress-regime, and porosity - the same narrow range is observed in 1% porosity crystalline rocks as in 30% porosity sandstones. 2.4 Shear-wave window Shear-waves observed at the surface are sensitive to the angle of incidence to the free-surface.