Materials Literature
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I give a brief introduction to Luttinger liquids. Luttinger liquids are paramagnetic one-dimensional metals without Landau quasi-particle excitations. The elementary excitations are collective charge and spin modes, leading to charge-spin separation. Correlation functions exhibit power-law behavior. All physical prope…
A new method is proposed to remove NO x and SO 2 simultaneously for flue gas cleanup. NO is first oxidized to NO x(x 1 5), and then is scrubbed together with SO 2 by aqueous ammonia and recovered as fertilizer. The key step is the selectively catalytic oxidation of NO in the gas phase. By using the quantitative analys…
OCTG (Oil Country Tubular Goods) and line pipes used for production and transportation of oil and gas are the major steel products which suffer hydrogen embrittlement (HE) because they are often exposed to wet hydrogen sulfide (sour) environments, where a lot of hydrogen enters the steel. Typical damage types of HE ar…
Amorphous graphite slurries used in flushing operations were conditioned at pH4.2 in the presence of chelatin and reducing agents both to release graphite and clayey particles and to enhance the hydrophobicity of the graphite surface. Graphite particles were first extracted from the aqueous slurry using a kerosene-bas…
The influence of cutting speed on the behavior of crater wear on tool face using different three kinds of high-speed steel hob materials in dry hobbing was mainly investigated in this paper. Experiments were carried out using a fly tool. As a consequence, the following points were clarified : (1)From cutting speeds of…
The reaction of AuCl(PPh3) in THF with [Co6C(CO)15]2−1 afforded [Co6C(CO)15{AuPPh3}]−3, with a metal skeleton consisting of a Co6C trigonal prism capped by a AuPPh3 group. 3 incorporated a new AuPPh3+ fragment giving [Co6C(CO)13{AuPPh3}2] 4. The crystal structure of 4 reveals that the metal skeleton consists of a coba…
Partially saturated furo [3,4-c]thieno [2,3-d]pyrazoles (7-10) have been submitted to 1,3-dipolar cycloaddition with a variety of nitrilimines.The competitive formation of products due to the dipolar attack at different dipolarophilic sites has been observed.The experimental evidence is discussed by taking into accoun…
Thin films of proton-conducting BaZr0.85Y0.15O2.925 perovskite-type ceramics, prepared in a sol–gel process by multiple dip-coating on silicon single crystal wafers, and powder samples, prepared by the conventional carbonate route, were charged with hydrogen by dissociative water absorption at definite values of water…
Nephrogenic diabetes insipidus (DI) secondary to chronic urinary tract obstruction is a rare disease. The exact cause is unknown but it is likely that increased collecting duct pressures cause damage to the tubular epithelium, resulting in insensitivity to the action of arginine-vasopressin (AVP). A 77-year-old man co…
Magnetite nanoparticles with an average particle size of 7.5 nm were studied by Mössbauer spectroscopy in the 100–300 K temperature range. Using experimental data on the temperature variation of isomer shifts in the partial spectra of 57 Fe nuclei in the A and B crystal sublattices, the linear thermal expansion coeffi…
Aluminosilicate MCM-41 samples in the as-prepared form and modified by deposition of carbonaceous compounds formed during conversion of cyclohexene were investigated by nitrogen adsorption. The amount of the deposits decreases with the reaction temperature and increases with the quantity of aluminium incorporated into…
A novel osmium-metal coating device for SEM observation has been developed to prevent negative charge build-up on specimens by applying the hollow-cathode low voltage discharge plasma chemical vapour deposition (CVD) method. The CVD method using the hollow-cathode offers the following advantages. (i) The method can de…
Ir(acac)3 supported on a carbon fiber-anode catalyzed the oxidations of alkanes (cyclohexane, n-hexane, adamantane) by generating strong electrophilic oxygen species from H2O at 1.3 V (Ag|AgCl) with high current efficiency, for example, 45% for cyclohexanone formation.
A new self-designed mechanochemical reactor, inlaid pan-mill, was used in studying high density polyethylene (HDPE). The effects of pan-milling stress on the structure and properties of HDPE were investigated. Gel permeation chromatography, melt indexer, Fourier transformed infrared spectroscopy, electron spectroscopy…
Our research has shown that mono-phase cubic zirconia has the highest loading capacity for Pu (not less than 10 wt. %) in the form of Zr-Pu solid solution. Zircon host-phase provides complete incorporation of 6.9 wt. % Pu into zircon crystalline structure; however, higher Pu loading into initial precursor phases cause…
In this study the superelastic effect of Fe–Mn–Si–Cr shape memory alloys was investigated using a coil which permits the measurement of small strain. Fe–Mn–Si shape memory alloys were found to exhibit superelastic behavior to some extent over a temperature range above As. Superelastic behavior was most pronounced in t…
The noncontact technique that is described uses atomic oxygen, generated under low pressure in the presence of nitrogen, to remove soot and charred varnish from the surface of a painting. The process, which involves surface oxidation, permits control of the amount of surface material removed. The effectiveness of the…
The structure of extruded Ca(PO 3 ) 2 glass was characterised by measuring optical birefringence, thermal expansion and two dimensional rotorsynchronised nuclear magnetic resonance spectra using magic angle sample spinning (2D MAS NMR). The results give evidence not only of a macroscopic structural anisotropy but also…
New glasses in the quaternary system AgI-Ag 2 O-TeO 2 .B 2 O 3 have been synthesised by rapid quenching from glass melts. The ratio between B 2 O 3 and TeO 2 was kept constant, B 2 O 3 :TeO 2 =1. Glasses were obtained with up to 50 mol% AgI. Above this value, β/γ-AgI crystallised in the amorphous matrix. It is seen fr…
Polyhydroxyalkanoate, abbreviated to PHA, is a family of polyesters produced by a variety of microorganisms. Over 90 PHA with various structure variations have been reported and the number is still increasing. Some interesting physical properties of PHA such as piezoelectricity, nonlinear optical activity and biocompa…