Materials Literature
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An iron(III) complex [Fe(salten)(Mepepy)]BPh4 containing only one photoisomerizable ligand (Mepepy) has been synthesized, it exhibits a thermally-induced spin crossover in the solid state and in solution {H2salten = 4-azaheptamethylene-1,7-bis(salicylideneiminate); Mepepy = 1-(pyridin-4-yl)-2-(N-methylpyrrol-2-yl)ethe…
The synthesis and general chemical physical characterization of the following new classes of complexes derived from tetrakis(thiadiazole)porphyrazine (TTDPzH(2)), i.e., [(TTDPz)M(DMSO)(2)] (M = Mn(II), Fe(II)), [(TTDPz)M](H(2)O)(2), and [(TTDPz)M] (M = Mn(II), Fe(II), Co(II), Ni(II), Zn(II)) are reported. The IR spect…
The bioplastic PHB/HV (copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate) underwent a faster degradation at 30°C than at 52°C in soil under aerobic conditions, while there was no remarkable difference between 30°C and 52°C in the degradation rate of PCL [poly(ε-caprolactone)], PBSA (polybutylene succinate and agipa…
Carboxylic acids are found to adsorb weakly to the native oxide surface of aluminum. Under heat exchange conditions, synergistic carboxylate combinations provide superior high-temperature aluminum corrosion protection and show excellent heat-transfer characteristics. The surface films formed under these dynamic heat-t…
Four formulations of magnesia‐graphite‐aluminum metal (antioxidant) bricks were prepared from the same raw materials, using the standard commercial practices. Chemical analysis and determination of room‐temperature modulus of rupture and Young's modulus, as well as a complete microstructural characterization of the as…
Abstract The IR spectra of -saturated smectites were examined in terms of their charge characteristics. The υ 4 band near 1440 cm -1 , observed in the DRIFTS spectra (obtained without use of a KBr matrix), was assigned to the vibrations of ions compensating the negative charge of the clays. When KBr was used as a dilu…
The formation and development of dry bands can best be studied by modifying the standard test procedures. When such controlled behavior is allied with synchronized optical and electrical recordings, then characterization of the pre-formative leakage current, the transient phenomena associated with partial arcs across…
Abstract Analytical transmission electron microscopy (ATEM) and X-ray absorption spectroscopy (XAS) have been used to determine the mineralogy of Pb-P deposits in the roots of the heavy metal tolerant grass cultivar Agrostis capillaris L. cv. Parys Mountain. The deposits have a pyromorphite (Pb 5 (PO 4 ) 3 Cl)-type st…
The interaction of SO 2 with highly oriented ceria films is studied as a function of coverage, temperature, and degree of oxidation of the ceria. Soft X-ray photoemission (SXPS) is used to analyze the oxidation state of the ceria and the evolution of the SO 2 -derived species, while thermal desorption spectroscopy is…
Abstract Potassium alum was crystallized by natural cooling in two well‐mixed laboratory‐scale (12.2 L) and pilot‐scale (600 L) crystallizers. When unimodal product crystals of grown seeds were used, no scaleup effect on product crystal‐size distribution (CSD) was observed if enough seeds were loaded over a critical s…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTNew Approach to Hyperbranched Polyesters: Self-Condensing Cyclic Ester Polymerization of Bis(hydroxymethyl)-Substituted ε-CaprolactoneM. Trollsås, P. Löwenhielm, V. Y. Lee, M. Möller, R. D. Miller, and J. L. HedrickView Author Infor…
Summary The stabilization of organic matter in soil by interaction with aluminium (Al) or allophane is important in maintaining soil quality, and in retarding the decomposition of soil organic matter. Complexation of Al by soil organic matter may also ameliorate Al toxicity. Here we use 13 C‐NMR spectroscopy to assess…
A silicon light emitting device was designed and realized utilizing a standard 2-μm industrial CMOS technology design and processing procedure. The device and its associated driving circuitry were integrated in a CMOS integrated circuit and can interface with a multimode optical fiber. The device delivers 8 nW of opti…
Throughout the evolution of XPS, the ability to compensate for surface charging and accurately calibrate the binding energy scale, particularly with electrically inhomogeneous samples, has remained one of the most intractable problems. The last decade, however, has seen some quite significant advances in this area. Be…
This paper presents measurements of low-level leakage current (LC) patterns on naturally aged insulators and artificially contaminated material samples as well as insulaton. A nonlinear behaviorof the LC has been observed. Possible causes for this behavior are discussed and its relations to surface hydrophobicity and…
The two‐step electrolysis technique was developed for the purpose of preparation of a transparent and conductive zinc oxide (ZnO) film by cathodic deposition from a simple zinc nitrate aqueous solution at ambient temperature. The structural, optical, and electrical characterizations were performed with an atomic force…
The interface between flax fibres and thermoplastic polymer matrices has been investigated. Two types of flax fibres have been used: dew retted and upgraded Duralin fibres. The latter fibres have been treated by a novel treatment process for improved moisture and rot sensitivity. The apparent shear strength of dew-ret…
We report the transport and magnetic properties of a series of ferromagnetic metallic compounds, ${\mathrm{Eu}}_{1\ensuremath{-}x}{R}_{x}{\mathrm{TiO}}_{3},$ where the maximum ${T}_{C}$ is 8 K at $x=0.1.$ Magnetic interaction between Eu $4f$ spins mediated by itinerant Ti $3d$ electrons is essential for the ferromagne…
Layer-by-layer assembly of DNA film was fabricated on quartz plates through alternative adsorption with poly(allylamine) in order to investigate the interaction of DNA film with dyes. The film was water-insoluble and can interact with many water-soluble dyes. It has been found that ethidium bromide (EB) and 5,10,15,20…
The dependence of the proton spin-lattice relaxation rate, and of the enthalpy and temperature of denaturation on water content, were studied by nmr and differential scanning calorimetry (DSC) in native and denatured collagen. Collagen was first heated at four different temperatures ranging from 40 to 70 degrees C. Th…