Bi Fe O 3 (BFO), Ti(2%)-doped BFO (BFTO), Zn(2%)-doped (BFZO), as well Ti (1%) and Zn codoped (BFTZO) films were deposited on Pt∕Ti∕SiO2∕Si substrates by using a metal organic decomposition process. Well saturated P-E hysteresis loops can be obtained in BFZO BFTZO due to their lower leakage currents compared those of BFTO films. In comparison with film, film exhibits much larger remanent polarization (Pr∼84μC∕cm2), coercive field (2Ec∼570kV∕cm), stronger charge-retaining ability fatigue...

<title>Abstract</title> Flow laws for ice predict rates of deformation (strain) and are fundamental to modelling glacier ice-sheet dynamics. Here, we apply Bayesian inference laboratory measurements accumulated over seventy years constrain flow modelling. At low strains, commonly used laws—derived from individual experimental datasets with narrow stress, temperature, grain-size ranges—fail capture the full complexity behaviour. We show that a multicomponent law, sums strain different...

A 58 m long azimuthally oriented ice core has been collected from the floating lateral sinistral shear margin of lower Priestley Glacier, Terra Nova Bay, Antarctica. The crystallographic preferred orientations (CPO) and microstructures are described in order to correlate geometry anisotropy with constrained large-scale kinematics. Cryogenic Electron Backscatter Diffraction analysis shows a very strong fabric ( c -axis primary eigenvalue ∼0.9) -axes aligned horizontally sub-perpendicular...

Abstract. Synthetic polycrystalline ice was sheared at temperatures of −5, −20 and −30 ∘C, to different shear strains, up γ=2.6, equivalent a maximum stretch 2.94 (final line length is times the original length). Cryo-electron backscatter diffraction (EBSD) analysis shows that basal intracrystalline slip planes become preferentially oriented parallel plane in all experiments, with primary cluster crystal c axes (the axis perpendicular plane) plane. In except two highest-strain experiments...

Abstract. In order to better understand ice deformation mechanisms, we document the microstructural evolution of with increasing strain. We include data from experiments at relatively low temperatures (−20 and −30 ∘C), where axial strain has never before been documented. Polycrystalline pure water was deformed under a constant displacement rate (strain ∼1.0×10-5 s−1) progressively higher strains (∼ 3 %, 5 8 12 % 20 %) −10, −20 ∘C. Microstructural were generated cryogenic electron...

Abstract. Microstructures provide key insights into understanding the mechanical behavior of ice. Crystallographic preferred orientation (CPO) develops during plastic deformation as ice deforms dominantly by dislocation glide on basal plane, modified and often intensified dynamic recrystallization. CPO patterns in fine-grained have been relatively well characterized understood experiments nature, whereas “warm” (T&gt;-10∘C), coarse-grained, natural remain enigmatic. Previous microstructural...

Abstract Background Lettuce ( Lactuca sativa L. ) is an economically important vegetable crop worldwide. believed to be domesticated from a single wild ancestor serriola and subsequently diverged into two major morphologically distinct types: leafy lettuce stem lettuce. However, the role of epigenetic variation in domestication divergence remains largely unknown. Results To understand genetic basis underlying divergence, we generate single-base resolution DNA methylomes 52 accessions,...

Observations of ice shelf anisotropy on borehole seismic data are presented. Hot‐water‐drilledboreholes were made by the Aotearoa New Zealand Ross Ice Shelf Programme through a grounding‐line proximal site at Windless Bight and central HWD‐2. The boreholes used to freeze seismometers into different depths. Seismic observations shear wave splitting using active sources deployed surface. These constrain anisotropic crystallographic preferred orientations (CPO) within column. Forward models...

Abstract. Plastic deformation of polycrystalline hexagonal ice (ice Ih) induces crystallographic preferred orientations (CPOs), which give rise to anisotropy in the viscosity ice, thereby exerting a strong influence on flow glaciers and sheets. The development CPOs is governed by relative importance two pivotal recrystallization mechanisms: subgrain lattice rotation strain-induced grain boundary migration (GBM). To examine impact strain these mechanisms, synthetic (doped with ∼ 1 vol. %...

Flow laws for ice predict rates of deformation (strain) and are fundamental to modelling glacier ice-sheet dynamics. Here we apply Bayesian inference laboratory measurements accumulated over 70 years constrain flow modelling. At low strains, commonly used laws-derived from individual experimental datasets with narrow stress, temperature grain-size ranges-fail capture the full complexity behaviour. We show that a multicomponent law sums strain different mechanisms is needed sensitivities...

Bi 3.15 Pr 0.85 Ti 3 O 12 (BPT) thin films with (100) (α(100)=89.1%), (117) (α(117)=83.2%), and (001) (α(001)=99.7%) orientations a c-axis-oriented (α(001)=99.9%) Bi4Ti3O12 (BT) film were deposited on Pt(100)∕TiO2∕SiO2∕Si substrates using metal organic decomposition process. Both the values of remanent polarization (Pr) coercive field (Ec) (001)-oriented BPT are about 50% higher than those BT same orientation, indicating that ferroelectric properties along c axis can be improved by doping...

Due to people having less children and the aging population, demand for elderly health services is increasing, which leads an increase in information. However, there a gap between medical information care due different storage institutions methods, makes it difficult service industry fully grasp utilize of elderly. Therefore, provide whole process that combine care. To solve problem poor collaborative utilization healthcare information, this paper, based on blockchain cross-chain technology...

Abstract Strain weakening leads to the formation of high‐strain shear zones and strongly influences terrestrial ice discharge. In glacial flow models, strain is assumed arise from alignment weak basal planes—the development a crystallographic preferred orientation, CPO—during flow. However, in experiments, also coincides with grain size reduction, which has been invoked as mechanism other minerals. To interrogate relative contributions CPO reduction toward weakening, we deformed initially...

Abstract. Plastic deformation of polycrystalline ice 1 h induces crystallographic preferred orientations (CPOs), which give rise to anisotropy in the viscosity ice, thereby exerting a strong influence on flow glaciers and sheets. The development CPOs is governed by two pivotal mechanisms: recrystallization dominated subgrain/lattice rotation strain-induced grain boundary migration (GBM). To examine impact strain transition dominant mechanism, synthetic (doped with ∼1 vol.% graphite) was...

Abstract. Crystallographic preferred orientations (CPOs) are particularly important in controlling the mechanical properties of glacial shear margins. Logistical and safety considerations often make direct sampling margins difficult, geophysical measurements commonly used to constrain CPOs. We present here first comparison seismic ultrasonic data with measured CPOs a polar margin. The CPO from ice samples 58 m deep borehole left lateral margin Priestley Glacier, Antarctica, is dominated by...

Abstract. Grain growth can modify the microstructure of natural ice, including grain size and crystallographic preferred orientation (CPO). To better understand grain-growth processes kinetics, we compared microstructural data from synthetic ice samples similar starting sizes that were annealed at solidus temperature (0 ∘C) for durations a few hours to 33 d. The has homogeneous initial characterized by polygonal grains, little intragranular distortion, bubbles, near-random CPO. subsampled...

Abstract. We sheared synthetic polycrystalline ice at temperatures of −5, −20 and −30 °C, to different shear strains, up γ = 2.6 (equivalent strain 1.5). Cryo-electron backscatter diffraction (EBSD) shows that basal intra-crystalline slip planes become preferentially oriented parallel the plane, in all experiments. This is visualized as a primary cluster crystal c-axes (the c-axis perpendicular plane) plane. In except two highest-strain experiments secondary observed, an angle cluster. With...

Since irradiation experiments of ferritic/martensitic （F/M） FeCr alloys show that F/M steels undergo much less swelling than austenitic during neutron or charged particle irradiation，in addition, it is well-known high chromium content provide good resistance against corrosion, they are considered as one the most attractive candidate materials for future nuclear facilities, such Fusion Reactor, ADS and generation Ⅳ reactors. Although can not be replaced by modeling, a purely experimental...

Abstract. The grain size of polycrystalline ice affects key parameters related to the dynamics masses, such as rheological and dielectric properties terrestrial flow well shells icy satellites. To investigate effect soluble impurities on grain-growth kinetics ice, we conducted annealing experiments samples doped with different concentrations KCl (10−2, 10−3, 10−4 10−5 mol/L) or MgSO4 (10−2 mol/L). Samples were annealed for a maximum 100 h at hydrostatic confining pressure 20 MPa...

The displacement damage due to non_ionizing energy loss (NIEL) is the main reason of device-malfunction in spatial radiation environments. In low range where Coulombic interaction dominates, Mott-Rutherford differential cross section usually used its creatment. However, electrostatic screening nuclear charges interacting particles not accounted for. NIEL induced by proton Si and GaAs have been calculated using analytical method Monte-Carlo code (SRIM). Thin_target approximation was when...

Abstract. Crystallographic preferred orientations (CPOs) are particularly important in controlling the mechanical properties of glacial shear margins. Logistical and safety considerations often make direct sampling margins difficult geophysical measurements commonly used to constrain CPOs. We present here first comparison seismic ultrasonic data with measured CPOs a polar margin. The CPO from ice samples 58 m deep borehole left lateral margin Priestley Glacier, Antarctica, is dominated by...