Materials Literature
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Global optimisation methods of structure determination from powder diffraction data have risen to prominence in a relatively short space of time and they now constitute a key approach in the examination of polycrystalline molecular organic materials. A correctly formulated global optimisation approach may be regarded…
ICP spectrometry was used to analyse the content of heavy metals in 23 samples of cotton of various origins which had been processed in the Polish domestic industry. Furthermore, the content of pesticides and pentachlorophenol (PCP) in 20 samples of cotton of various origins was determined by means of the high-perform…
n Introduction The marketing conditions which prevail in today’s world market oblige manufacturers to constantly raise the level of usability and aesthetic features of terry products. Thanks to appropriate technologies and modern finishing methods, it is possible to create selected product’s features.
For Pt.I see ibid., vol.19, no.1, p.9-14, January 2004. Dynamics of water penetration in mass impregnated cable insulation has been studied. For experimental purposes, artificial damage has been inflicted to a 40-cm-long cable sample and water ingress has been continuously monitored by frequency response measurements.…
Tungsten (W) is a candidate material for plasma-facing components in fusion reactors. Large amounts of solid transmuted elements of W such as Re and Os will be produced under fusion neutron irradiation. In order to investigate the effects of transmutation products, a series of W-Re-Os alloys were fabricated by an arc…
Surface Pretreatments of Aluminum Alloy AA2024-T3 and Formation of Chromate Conversion Coatings : II. Composition and Electrochemical Behavior of the Chromate Conversion Coating, Chidambaram, Devicharan, Clayton, Clive R., Kendig, Martin W., Halada, Gary P.
Hot filament chemical vapor deposition (CVD) of boron-doped diamond films on Ti substrates was investigated under different conditions with CH 4 and H 2 as precursors. Accelerated life tests, and physiochemical as well as electrochemical characterization, were conducted to assess the qualities of the electrodes obtain…
In order to examine the applicability of biodegradable polymers to the fields of electrical insulation, several dielectric properties of two typical biodegradable polymers, polylactic acid (PLA) and starch ester (SE), are examined. A fairly larger amount of space charge is accumulated in both polymers in comparison to…
Murine fibroblast L929 cells were cultured for 605 ks on 316L stainless steel and titanium specimens and a cell adhesive layer was formed. Tip of a tungsten microelectrode was placed at the intracell layer and a few millimeters above the cell layer, and pH values of the intra- and extracell layer were measured, respec…
A novel photochromic molecule having a bis(2,3'-benzothienyl) unit has been synthesized. The derivative underwent a thermally irreversible photochromic reaction upon alternate irradiation with UV and visible light.
The preparation of ethylene propylene diene terpolymer (EPDM)/organoclay nanocomposites was studied by melt blending method. The maleic anhydride modified EPDM oligomer (EPDM-MA) was used as a compatibilizer. The effect of organoclay on structure of nanocomposites was evaluated by X-ray diffraction (XRD). The absence…
Abstract Aufgrund des zunehmenden Einsatzes von Magnesiumlegierungen als Strukturwerkstoff in Leichtbauanwendungen erlangen deren Korrosionseigenschaften erhöhte Beachtung. In dieser Arbeit werden wichtige Parameter, die zur Korrosion der Magnesiumlegierungen führen, untersucht und diskutiert. Es wird gezeigt, dass de…
The X-band perpendicular-mode EPR spectra of manganese(III) porphyrins were detected for the first time.
Segmented-in-series solid oxide fuel cell (SOFC) arrays typically feature cell widths ⩾1 cm. We consider here the advantages and disadvantages of decreasing the cell width to 1–2 mm. The calculation results indicate that electrode resistance losses can be minimized via reduced widths, even for relatively thin electrod…
Phosphorylcholine (PC) groups were grafted onto ammonia plasma-treated biaxially-oriented polypropylene (BOPP) surfaces, via (a) reductive amination of phosphorylcholine glyceraldehyde and (b) a two-step procedure involving the chemical amplification of surface amine groups with tris(2-aminoethyl amine) and subsequent…
We investigate the ionic strength and temperature dependence of metastability with respect to crystallization in lysozyme solution. The supersaturation limit c* shows a simple scaling relation with salt concentration and, together with the equilibrium solubility csat, approximately factorizes into two terms, respectiv…
An attempt has been done to apply silk sericin for finishing there on synthetic fabrics such as poly(ethylene terephthalate) (PET) and polypropylene (PP). N-Vinylformamide was grafted onto the PET fabric swollen by benzyl alcohol and unswollen PP fabrics, using the so-called “film seal method” of electron-beam irradia…
Thermophysical properties of liquid and supercooled nickel were measured using electrostatic levitation. Over the 1420-1850 K temperature range, the density can be expressed as ρ(T )=7.89×103−0.65(T −Tm) (kg · m-3) with melting temperature Tm=1728 K. The isobaric heat capacity was estimated as Cp(T )=36.2+1.9×10-3(T −…
Transient isotopic experiments reveal that the mechanism of N2O formation in the high-temperature NH3 oxidation over Pt-Rh gauze involves the reaction of adsorbed ammonia intermediate species (NHx) and NO.
Polypyrrole(PPy)nanotubes and nanowires were synthesized through electrochemical polymerization method in nanoporous anodisc aluminum oxide(Al2O3)template. The electrolyte consisted of pyrrole monomer, solvent, and ionic liquid dopant such as BMIMBF4(1-butyl-3-methyl imidazolium tetrafluoroborate)or BMIMPF6(1-butyl-3-…