Materials Literature
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In this work we report the anodic formation of highly ordered nanoporous layers that exhibit a self-ordered alignment of pores uniformly over the anodized surface. These layers are grown by anodization of tantalum in a nonaqueous electrolyte consisting of an optimized glycerol/ethylene glycol mixture with the addition…
Effect of different curing conditions on the mechanical and shrinkage properties of magnesium phosphate cement(MPC),the water resistance of MPC with different ratio of n(MgO) to n(KH_2PO_4),the component and microstructure of the hydrated product were studied in this paper.The findings show that the strength of MPC lo…
A new synthesis scheme for the formation of porous CeO2/Pt-polycarbosilane composites using inverse microemulsions is presented. Aqueous hexachloroplatinic acid was used as a hydrosilylation catalyst causing crosslinking of allyl groups in a liquid polycarbosilane (PCS). The resulting polymers are temperature stable a…
Acyclic Schiff base ligands, derived from the condensation of 2,3-disubstituted benzaldehydes and 1,3-diaminopropan-2-ol, react with iron(II/III), manganese(II/III) and copper(II) salts to give di-, tetra- and hexanuclear complexes [Fe(III)(2)(L5)(2)].2MeOH (), [Fe(III)(4)(mu(3)-OMe)(2)(HL4)(2)Cl(2)] (), [Mn(II)(2)Mn(…
Dolomite has a large amounts of MgO and is an important raw materials for steel, iron and refractory industries. In this paper thermal behavior of Zefreh dolomite at various temperatures was studied by differential thermal analysis (DTA), Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT -…
Plasma Electrolyte Oxidation (PEO) behavior of AZ91 Mg alloy was investigated in the electrolytes with/without potassium fluoride. Growth rate of coating thickness in the electrolyte containing potassium fluoride (Bath B) was much higher than that in the electrolyte without potassium fluoride (Bath A). The oxide layer…
Hydroxypropylcellulose (HPC), a cellulose derivative, and poly(acrylic acid) (PAA) were assembled onto colloidal SiO2 particles in acidic solutions in a layer-by-layer manner, using hydrogen bonding as the driving force. Monodisperse hollow microcapsules were prepared by the removal of the sacrificial template. Long-t…
FIGURE 6. Mimotettix dietrichi sp. nov., male genitlalia. (A) Pygophore, left lateral view. (B) Right style, dorsal view. (C) Connective. (D) Aedeagus, ventral view. (E) Aedeagus, lateral view. (F) Valve, subgenital plates and style, ventral (left) and dorsal (right) views.
Increasing the length of the carboxyamide arm of a GdDOTA monoamide (DOTA = 1,4,7,10-tetraaza-1,4,7,10-tetrakis(carboxymethyl)cyclododecane) complex from acetic to propionic accelerates the water exchange rate (k(ex)) by nearly two orders of magnitude; the (1)H relaxivity of the corresponding macromolecular derivative…
The first combined high pressure single-crystal X-ray diffraction and high pressure magnetism study of two polymetallic clusters is presented in an attempt to correlate the observed changes in structure with changes in magnetic response without the need for changes in external ligation. At 1.5 GPa the structure of [Mn…
The mechanical properties of polystyrene-block-poly(acrylic acid) (PS-b-PAA) vesicles prepared with different block copolymer chain lengths and block length ratios were studied under ambient conditions using atomic force microscopy (AFM). The deformation δ, as well as the spring constant of the membranes kmem, of indi…
A novel organic–inorganic mesoporous luminescent hybrid material was designed by linking a ternary Eu3+ complex to the functionalized hexagonal mesoporous MCM-41 with the modified β-diketone, 4,4,5,5,5-pentafluoro-1-(naphthalen-2-yl)pentane-1,3-dione (HPFNP), which contains a polyfluorinated alkyl group as well as the…
[CpIrCl(2)](2) () and new CpIr(III)(L-L)X complexes (L-L = N-O or C-N chelating ligands; X = Cl, I, Me) have been prepared and their reactivity with two-electron chemical oxidants explored. Reaction of with PhI(OAc)(2) in wet solvents yields a new chloro-bridged dimer in which each of the Cp ligands has been singly ac…
Crystallization kinetics and morphology of biodegradable poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) containing 7, 10 and 18 mol% 3-hydroxyhexanoate (HHx) comonomer were investigated by differential scanning calorimetry, polarized optical microscopy and wide angle X-ray diffraction in detail in this work. T…
Potato starch foam trays based on blends of poly(vinyl alcohol) and corn fibers (CFs), co-product of the corn-wheat wet-milling process, are prepared by baking the blended mixtures in a preheated mold. Materials are evaluated for processing parameters, foam strength, flexibility, and water resistance as a function of…
Identification and characterization of different forms of methotrexate were carried out by crystallization from different solvents. Five different forms of the drug were obtained. Appearance of a desolvation endotherm in the DSC accompanied by mass loss in TGA for forms I, II, IV and V showed these forms to be acetoni…
Classical molecular dynamic simulations are performed to investigate the microscopic properties of hexadecyltrimethylammonium (HDTMA) intercalated smectites with and without the cointercalation of acetate groups. Three model smectites with distinct layer-charge characteristics are selected as the frameworks and their…
A series of magnetic amorphous ribbons with different Gd/Co ratios was prepared by melt-spun method. With the decrease in Gd/Co ratio, Curie temperatures increase gradually from 166 to 193 K. The maximum values of magnetic entropy changes under a magnetic field of 10 kOe are −3.1, −3.0, −2.9, and −2.8 J/kg K for Gd71C…
Shape-amphiphilic liquid crystals offer a route towards complex assemblies at the difficult 10 nanometer length scale. We present the preparation and mesomorphic characterisation of three novel shape amphiphiles based on azobenzenes. Their mesophases range from a simple nematic to complex lamellar phases of alternatin…
Hydrogen bonding in solids has provided diverse attractive issues. Prof. C. N. R. Rao and his collaborators have made representative achievements on experimental and theoretical grounds as well as on the resultant crystal engineering and functionalities. Many of the key issues clarified in those extensive studies are…