Materials Literature
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Four clay minerals of the middle and late Meesozoic mudrock samples from North and Northeast China were analyzed by TEM and Illite Crystallinity (IC) in the study. The paper also explained the reliability of experimental data when employed to analyze paleoclimate. Spatial and temporal change of contents of clay minera…
Anhydrous lanthanide chlorides LnCl3 (Ln = La,Ce,Pr,Nd and Sm) were prepared from La2O3,CeO2,Pr6O11,Nd2O3 and Sm2O3 chlorinated by NH4Cl,respectively.The thermal decomposing process of pure NH4Cl was investigated by TG,and the thermal effect of chlorination of rare earth oxides by NH4Cl were investigated by TG and DSC…
Multiblock copolymers from polyethylene glycol (PEG), e-caprolactone (CL), and p-dioxanone (PDO) were synthesized and characterized. Triblock copolymers were first synthesized from PEG with number-averaged molecular weights (M n ) of 3000, 4000, and 15000 Daltons, and e-caprolactone in the presence of Sn(Oct) 2 . 1 H-…
A novel ferrocene-based epoxy compound was synthesized. It was characterized by 1H-NMR and FT-IR. The influence of different solvents and potential scan rates on the cyclic voltammetry (CV) behavior of the resultant compound was investigated. The relationship between the peak currents and potential scan rates indicate…
Hydrogen storage properties of Ti-Zr-Mn eutectic alloys with the formula Ti 0.475 Zr 0.3 Mn 0.225 were evaluated at ambient temperature and 565 C using a Sieverts-type device. The initial alloys were studied by means of SEM-EDS technique, X-ray diffraction and DTA. The phase compositions and the crystal structures of…
Sodium bicarbonate plays an important role, after admixing in Magnesium Oxysulphate Cement (Sorel’s Cement), on strength and durability of the product. It’s incorporation in the matrix as additive in powerded form as well as saturated solution is studied in detail. Powdered form of NaHCO3 increases the compressive str…
We studied interface effects of thin film V2O5 electrodes on top of indium tin oxide (ITO) glass for Li intercalation by means of a combination of methods: depth-profiling by secondary ion mass spectroscopy (SIMS), electrochemical insertion-extraction of lithium ions by slow-scan cyclic voltammetry (SSCV) and by poten…
Compression tests were conducted at the temperature of 573 K with the true strain rates of 10−3–1 s−1 on as-cast and homogenized Mg-6Al-2Ca-2RE (RE = rare earth) (in mass%) alloy specimens, and their dynamic recrystallization (DRX) behaviors were investigated. Strain hardening occurred after yielding, followed by stra…
The bifunctional phosphine–phosphonate ester derivatives Ph2P(CH2)3P(O)(OSiMe3)2 (L), (cis-Cl2Pt[Ph2P(CH2)3P(O)(OSiMe3)2]2 (1), trans-Cl2Pd[Ph2P(C6H4)P(O)(OSiMe3)2]2 (2) and trans-Cl2Pd[Ph2P(C6H4)P(O)(OEt)2]2 (3) were used to immobilize platinum(II) and palladium(II) complexes on metal oxide supports by three differen…
This work describes the infrared spectroscopy characterization and the charge compensation dynamics in supramolecular film FeTPPZFeCN derived from tetra-2-pyridyl-1,4-pyrazine (TPPZ) with hexacyanoferrate, as well as the hybrid film formed by FeTPPZFeCN and polypyrrole (PPy). For supramolecular film, it was found that…
A novel approach towards NIR absorption, including the deprotonation and subsequent quinoidal charge delocalization of amino-substituted rylene dicarboximides, is presented.
Poly (lactic acid) (PLA) blends with biodegradable aliphatic polyester of butylene glycol and succinic- and adypic acids (Bionolle) were studied with respect to their usefulness for the preparation of fibrous materials with biodegradability and improved elasticity. The miscibility of PLA/Bionolle blends was investigat…
Gas insulated switchgear (GIS) is reliable equipment. However, when a metallic particle is in it, the insulation reliability of GIS sometimes reduces. Partial discharge (PD) measurement is usually performed to detect a metallic particle in GIS. After the PD detection, the criticality of PD must be estimated. For this…
Detection of SF6gas leakage from a gas insulated switchgear (GIS) has recently become an important issue from an environmental standpoint in addition to the demands for the insulating reliability. This paper describes a state-of-the-art gas leakage detection system, which consists of a high-performance gas pressure se…
Lacustrine and fluviolacustrine deposits of the Charo sequence crop out extensively along tens of kilometres, and they overlie the Miocene volcanic sequences of the Mil Cumbres Complex in an E-W oriented basin. Eastwards of Morelia city (central Mexico), layers of non lithified clayey sediments of about 3 m in thickne…
The heating effects of three PCM vests (Tmelt=32, 28 and 24 °C) were tested on a thermal manikin with constant temperature at 30 ºC in a subzero environment (Ta=-4 °C, Va=0.4 m/s). The results showed that the heating effects lasted about 3-4 hours. The highest heating effects reduced heat loss for 20-30 W/m2 on the to…
Heat transport of dielectric thin films in 30–300 nm thick is characterized in the temperature range of 74–300 K using the 3ω method, which is a simple method to measure the cross-plane thermal conductivity of dielectric thin films. Dielectric film samples of two kinds, deposited on Si substrates using plasma enhanced…
The effects of the size and shape of sendust particles on the absorption characteristics of composite electromagnetic wave absorbers made of polystyrene resin and sendust were investigated. We also investigated the difference in the absorption characteristics between permalloy and sendust. The sendust particles were g…
Levantamento dos representantes da família Pinnulariaceae (Naviculales, Bacillariophyceae) do Parque Estadual das Fontes do Ipiranga, São Paulo, Brasil. Foram identificados dois gêneros (Caloneis com 1 e Pinnularia com 12 espécies) e 20 táxons no total, distribuídos em 13 espécies e sete variedades não típicas de suas…
The present study reports some preliminary investigations on the antibacterial activity of nanostructured poly(1-naphthylamine) (PNA) and its composites with polyvinyl alcohol (PVA) and polyvinylchloride (PVC). The antibacterial activity was evaluated against Escherichia coli and Staphylococcus aureus. The particle si…