Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In this work, we studied the electron beam scattering due to the introduction of two gases : water vapour and helium within the specimen chamber of the Environmental Scanning Electron Microscope (ESEM) and the effects of this phenomenon on the image quality and on the microanalysis results. An increase in the pressure…
A chemical investigation of the roots of Cynanchum stauntonii has resulted in the characterization of a new hydroperoxide with a 13,14 : 14,15-disecopregnane-type skeleton, named stauntonine (1), together with three related compounds, anhydrohirundigenin (2), anhydrohirundigenin monothevetoside (3), and glaucogenin-C…
The surface morphology of the {100} face growth hillock of potassium dihydrogen phosphate (KDP) is examined through first-principles calculations and using periodic-bonded-chain (PBC) theory. KDP, or archerite ([K, NH 4 ]H 2 PO 4 ), is used extensively in industry and is an excellent model for more complicated materia…
Different attractive interacting colloidal systems are characterized by means of static light scattering. As most of these samples are rather concentrated, multiple scattering is suppressed by partial contrast match and the use of very a thin sample cell (13 μm). This is possible with the laboratory built flat cell li…
Dynamic light scattering (DLS) is a well-known noninvasive technique for investigating interactions of protein molecules in solution. Unfortunately, DLS is not very sensitive to small size changes because covariables, such as temperature, viscosity, and refractive index, are not precisely known, or they vary as functi…
The effects of gravity on the crystallization of ZrF(4)-BaF(2)-LaF(3)-AlF(3)-NaF glasses have been studied using the NASA KC-135 and a sounding rocket. Fibers and cylinders of ZBLAN glass were heated to the crystallization temperature in unit and reduced gravity. When processed in unit gravity the glass crystallized,…
Transposed-temperature, drop-calorimetry measurements were performed in the systems Na 2 SiO 3 - Fe 2 O 3 -SiO 2 and Na 2 SiO 3 -NaFeSi 2 O 6 at 1373 K to investigate thermodynamic properties of Fe 3+ -bearing silicate liquids. The results confirm previously measured enthalpy of Na 2 SiO 3 and SiO 2 melts. No signific…
Abstract The paper reports that the processing behavior and physical properties of the blends of silicone rubber and fluororubber based on tetrafluoroethylene/propylene/vinylidene terpolymer. The processing behavior of the fluororubber can be improved on blending with low viscous silicone rubber. The results indicate…
OBJECTIVE: To determine the acute and short-term adverse effects of a liposome-encapsulated form of cisplatin at increasing dosages of up to twice the known maximally tolerated dose (MTD) of unencapsulated cisplatin in clinically normal dogs. ANIMALS: 4 healthy 2.5-year-old sexually intact female hound-type dogs. PROC…
The pitting corrosion of copper tubes in drinking water systems is a sporadic but persistent problem along the east coast of Australia, New Zealand, and other locations where predominantly soft water is found. Historically, the lack of an adequate theory for localized soft water copper corrosion has made remedial trea…
Ultrathin films of ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}$ $(x\ensuremath{\cong}0.33)$ in a thickness range below $10\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ were deposited by direct current (dc) magnetron sputtering on different substrates, $(001)\mathrm{Sr}\mathrm{Ti}{\mathrm{O}…
Abstract A simple cyclitol derivative has been found to gelate many low‐polar solvents. A detailed molecular level investigation demonstrated that the intermolecular head‐to‐tail hydrogen bond plays a key role in the self‐assembly of the monomers to generate supramolecular polymeric fibres. Such self‐assembled oligome…
Single-walled carbon nanotubes (SWNTs) hold great promise for advanced applications in aerospace, electronics and medicine, yet these industries require materials with rigorous quality control. There are currently no accepted standards for quality assurance or quality control among the commercial suppliers of SWNTs. W…
Clusters of self-interstitial atoms (SIAs) in the form of parallel crowdions are created directly in high-energy displacement cascades produced in metals by neutron irradiation. They are equivalent to small perfect dislocation loops and, in isolation in pure metals, undergo fast thermally-activated glide in the direct…
Abstract Blends of poly[(R)3‐hydroxybutyryric acid) (PHB) with different plasticizers were investigated by TGA, DSC, OM and mechanical testing. Markedly hydrophilic plasticizers promote PHB thermal‐degradation through a light alcoholysis reaction. All the used plasticizers were compatible with PHB up to a maximum load…
The effective repulsive energy between the carriers in a molecular dimer has been examined in terms of the extended Hubbard model. The intermolecular Coulomb repulsion, V , rather than the intradimer transfer integral, t , has been shown to give major contribution to the effective repulsion in a strongly dimerized cas…
Abstract The first synthesis of benzo[1,2‐ c :3,4‐ c ']bis[1,2,5]selenadiazole has been developed starting from commercially available 4‐nitrobenzo‐2,1,3‐selenadiazole. Improved syntheses of the related heterocycles [1,2,5]selenadiazolo[3,4‐ e ]‐2,1,3‐benzothiadiazole, furazanobenzo‐2,1,3‐thiadiazole and furazanobenzo…
Negatively corona-charged 50-/spl mu/m-thick polypropylene (PP) film is measured using laser-induced pressure pulse (LIPP) and thermally stimulated current (TSC) in order to study the charge storage mechanism in the PP film. The LIPP can reveal the space-charge distribution in the depth direction of the PP films and t…
As lithographic technology drives the minimum integrated circuit feature size toward 0.1 /spl mu/m and below, process tolerances for critical-dimension profile excursion are becoming increasingly demanding. In response, optical critical dimension metrology (OCD), an optical-wavelength light-diffraction technique, is e…
Background data are presented that support a concept for galvanic and ion exchange release of cathodic (oxygen reduction) corrosion inhibitors from conducting polyaniline (PANI). Such inherently conducting polymers can be potentially formulated into protective coatings for Cu-rich aluminum alloys. The results show tha…