Using Gypsum and Other Calcium Amendments in Southwestern Soils
Revised; Originally Published 2006
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A complementary contribution to piezoelectricity from bone constituents
In the light of the recent theoretic predictions and experimental evidences of piezoelectricity in synthetic hydroxyapatite, the analogue of the mineral component in bone, this study revisits the question of piezoelectricity in the two major constituents of bone: apatite and collagen. Structural and electromechanical…
Hydrothermal synthesis of ultrathin Bi2MO6 (M=W, Mo) nanoplates as new host substances for red-emitting europium ion
Ultrathin Bi2MO6 (M=W, Mo) nanoplates were synthesized by a simple hydrothermal method. SEM, EDS and XRD were used to investigate the morphologies and compositions of the samples from BiONO3 nanoplates along with some nanoparticles, to precursory Bi2WO6 nanoplates and Bi2MoO6 nanoparticles, and to final Bi2MO6 nanopla…
Defect properties of CuCrO 2 : A density functional theory calculation
Using the first-principles methods, we study the formation energetics properties of intrinsic defects, and the charge doping properties of extrinsic defects in transparent conducting oxides CuCrO 2 . Intrinsic defects, some typical acceptor-type, and donor-type extrinsic defects in their relevant charge state are cons…
Correlator product state study of molecular magnetism in the giant Keplerate Mo72Fe30
We have studied the properties of the giant Keplerate molecular magnet ${\mathrm{Mo}}_{72}{\mathrm{Fe}}_{30}$, as a function of applied magnetic field, using the correlator product state (CPS) tensor network ansatz. The magnet is modeled with an $S=5/2$ antiferromagnetic Heisenberg Hamiltonian on the 30-site icosidode…
Polymer‐Protected and Au‐Containing Bi‐ and Trimetallic Nanoparticles as Novel Catalysts for Glucose Oxidation
Abstract Polymer‐protected metal nanoparticles (NPs) are recognized as a type of complex between a polymer and metal NPs, since the metal NPs are stabilized by coordination to the polymer. Thus, they can work as an effective catalyst in a dispersed state due to their high surface area‐to‐volume ratio and high stabilit…
Behind space charge distribution measurements
Through an analysis of different space charge measurement methods, the paper makes recommendations for ensuring optimal implementations and measurements. The thermal, pressure-wave-propagation and pulsed-electro-acoustic methods are considered. From the underlying physics of these methods, the effect of impedance mism…
Dark field photoelectron emission microscopy of micron scale few layer graphene
We demonstrate dark field imaging in photoelectron emission microscopy (PEEM) of heterogeneous few layer graphene (FLG) furnace grown on SiC(000-1). Energy-filtered, threshold PEEM is used to locate distinct zones of FLG graphene. In each region, selected by a field aperture, the k-space information is imaged using ap…
Preparation and properties of cotton stalk bundles and high-density polyethylene composites using hot-press molding
Compared to extrusion and injection, hot-press molding can produce natural fiber plastic composites with many advantages. In this study, large cotton stalk bundles and HDPE composites were fabricated using hot-press molding. The effects of fiber size and drying temperature on the mechanical properties and thickness sw…
Enhanced electret charge stability on polyethylene films treated with titanium-tetrachloride vapor
Low-density polyethylene (LDPE) films have been treated with titanium-tetrachloride vapor by means of the molecular-layer-deposition method. It is shown that such a treatment leads to a considerable improvement of the electret properties for both positively and negatively charged films. The temperature stability of th…
Kinetic analysis for non-isothermal solid state reduction of nickel laterite ore by carbon monoxide
The kinetic analysis for non-isothermal solid state reduction of nickel laterite ore by carbon monoxide was investigated at four different heating rates (5, 10, 15 and 20 K min−1). The mechanism function f(α) and kinetic parameters of the reduction process of nickel laterite ore were determined by the thermogravimetri…
Multiferroicity and phase transitions in Tm-substituted GdMnO3
The multiferroic behaviors of polycrystalline Gd1−xTmxMnO3 are investigated by measuring the structural, magnetic, dielectric, and ferroelectric properties. Remarkable polarization is observed by partial Tm-substitution of Gd ions, and can be proposed to arise from the contribution of both the symmetric exchange stric…
Structural transformations in LiGd9(SiO4)6O2 and Ca2Gd8(SiO4)6O2 crystals containing isolated [SiO4] complexes: Raman spectroscopic study
The vibrational spectra of single crystals of the LiGd 9 (SiO 4 ) 6 O 2 and Ca 2 Gd 8 (SiO 4 ) 6 O 2 oxyapatites have been studied using Raman spectroscopy at room and high temperatures. The spectra of internal and external vibrations in these structures have been resolved. The structural transformation of the LiGd 9…
Effect of Aminobenzene Concentrations on the Corrosion inhibition of Mild Steel in Sulphuric acid
The inhibiting action of aminobenzene concentration against the corrosion of mild steel in dilute sulphuric acid contaminated with 5% sodium chloride was studied using weight-loss method, calculated corrosion rates from the obtained weight loss data, potentiodynamic polarization measurements and metallographic macrogr…
A water walking robot inspired by water strider
Recent studies on water striders have revealed the mechanism of their floating and walking on water. By fast swinging their middle legs backward and striking the water, water striders get the driving force to move forward. This paper introduces a new water walking robot mimicking the rowing locomotion of water strider…
Natural Fibre Cross Sectional Area, Its Variability and Effects on the Determination of Fibre Properties
The results of a study on the measurement of fibre bundle cross section and its variability in flax and sisal fibres are presented. Cross section values obtained from “diameter” measurements were more than double the values obtained from actual observation of cross sections of the same individual fibre bundles. The ov…
Design of Low Cost High Performance Powder Metallurgy Titanium Alloys: Some Basic Considerations
The inexpensive hydrogenated–dehydrogenated (HDH) titanium powder made from the Kroll sponge titanium provides a cost-affordable basis for powder metallurgy (PM) Ti alloy development. The design targets we hope to achieve are low feedstock cost (< $25/kg) including all alloying elements; low fabrication cost based…
Spray-Dried Polymeric Nanoparticles for Pharmaceutics: A Review of Patents
Polymeric nanoparticles have been the focus of several researches in the last three decades in diverse areas including the delivery of pharmaceutical, diagnostic and cosmetic agents. These nanocarriers are able to improve the bioavailability and intrinsic solubility of drugs, to target different agents to a specific l…
Thermal conductivity of self-assembled nano-structured ZnO bulk ceramics
In this study, we describe the changes in thermal conductivity behavior of ZnO-Al micro- and nano-two-phase self-assembled composites with varying grain sizes. The reduction in thermal conductivity values of micro-composites was limited to ∼15% for ZnO-4% Al. However, nano-composites exhibited large reduction, by a fa…
Effects of Gd substitution on microstructures and low temperature dielectric relaxation behaviors of SrTiO3 ceramics
In this paper, Sr1 − 3x/2GdxTiO3 ceramics (0.00 ≤ x ≤ 0.05) were prepared from powders obtained by a sol–gel method. X-ray diffraction results showed that the Gd ion substituted Sr site, and the unit cell volume of doped samples decreased with increasing Gd doping concentrations, which was due to the difference betwee…