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。
We describe the upwards movement of an air bubble creeping along a slightly inclined plane immersed in a viscous liquid which totally wets the solid. After characterizing the shape of the static bubble under a horizontal plane, we tilt the plane and study the resulting motion. The bubble reaches a steady velocity, whi…
Abstract The ultrasound technique was applied to the synthesis of layered double hydroxides. The use of ultrasound in the synthesis of these compounds was studied in terms of its effect on their crystal qualities and surface properties. The crystal qualities of the compounds synthesized with ultrasound were compared w…
Drug targeting with liposomes has been studied for over 25 years and has demonstrated its value in clinical practice. This mini review offers an overview of the design and application of liposomes for i.v. drug targeting. Two approaches are outlined: passive and active targeting. The former approach is based on liposo…
This paper describes the synthesis and characterization of graft copolymers having a poly(thiophene) (PT) backbone with poly(methyl acrylate) (pMA) sidearms. Thiophene monomer containing a protected alcohol group was prepared and polymerized via the McCullough method to yield regioregular PT. The backbone was then fun…
The fracture behavior of Al 2 O 3 /SiC nanocomposites has been studied as a function of the SiC volume fraction and compared to that of the pure Al 2 O 3 matrix. A pronounced strengthening effect was only observed for materials with low SiC content (i.e., ≤10 vol%) although no evidence of concurrent toughening was fou…
Abstract Zirconium(IV) acetylacetonate [Zr(acac) 4 ] is a very good initiator for the terpolymerization of glycolide with L‐lactide and ϵ‐caprolactone. The microstructure of the obtained terpolymer was determined by NMR spectroscopy and then compared with terpolymers obtained in the presence of stanous(II) octoate [Sn…
Within the series of A 2 O 3 ‐HfO 2 phase diagrams (A ranges in cationic radius from Lu 3+ to La 3+ ), only those from Gd 2 Hf 2 O 7 to La 2 Hf 2 O 7 are known to exhibit a pyrochlore phase field. For A cations smaller than Gd 3+ , only a disordered fluorite phase field exists. Disorder energies for the entire series…
BACKGROUND: The failure to respond to chemotherapy is a major obstacle in the successful treatment of breast cancer. We have previously shown that anti-HER-2 antisense oligonucleotide (AS HER-2 ODN) treatment was able to sensitize breast cancer cells to various chemotherapeutic agents in vitro irrespective of their HE…
Abstract Passive layers on cobalt were prepared in 0.1 N NaOH (pH 13) under potentiostatic control with systematic variation of the relevant parameters, such as time and potential, and examined by x‐ray photoelectron spectroscopy (XPS). The electrochemical preparation of the sputter‐cleaned samples and their transfer…
Abstract CeO2(IV) fine particles were prepared by heating a polyethylene glycol solution of Ce(NO3)3·6H2O at 383 K for 3 h. When a polyethylene glycol whose molecular weight was 7500 or 20000 was used for the preparation, the obtained CeO2 particles were almost monodispersed.
In a classical paper Plesset has determined conditions under which a bubble changing in volume maintains a spherical shape. The stability analysis was further developed by Prosperetti to include the effects of liquid viscosity on the evolving shape modes. In the present work the theory is further modified to include t…
The effect of Ar ion irradiation on the reactivity of crystalline and amorphous quartz to alkali has been examined for clarifying whether radiation from nuclear reactors accelerates the degradation of concrete by inducing alkali-silica reaction of aggregates. Distorted amorphous quartz generated on the surface of quar…
The aim of sodding prosthetic grafts with endothelial cells (EC) is to establish a functioning antithrombogenic monolayer of EC. Application of basement membrane proteins improves EC adherence on ePTFE grafts. Their addition to a biodurable compliant poly(carbonate-urea)urethane graft (CPU) was studied with respect to…
The semiconducting properties of passive films formed on AISI 304 stainless steel and Alloy 600 in borate buffer solution were studied by capacitance (Mott-Schottky approach) and photocurrent measurements. Oxide films formed on 304 stainless steel in air at 350 ºC have also been studied. The results obtained show that…
The coordination chemistry of 6-amino-2,4-di-tert-butylthiophenol (H[LSAP]) and of 2-anilino-4,6-di-tert-butylphenol (H[LOAP]) with cobalt(II) ions was investigated in the presence and absence of dioxygen. It was shown that both compounds were redox-non-innocent ligands, existing in different protonation and oxidation…
Abstract This paper reviews some modern aspects and trends in the development of high performance polymer materials and processing technologies providing fabrication of advanced film and film structures. Changes in understanding of technical requirements and properties, along with novel approaches in creating high per…
The dissipative particle dynamics (DPD) method is used to simulate shear flow between two flat plates. To test this technique, simulations were conducted of both constant and oscillatory shear of a simple fluid. The results of these simulations agree well with theoretical predictions. We subsequently applied our model…
A large amount of Tb2O3 and Dy2O3 has successfully been incorporated into a borate glass with a molar composition of 5B2O3−3Ga2O3−3SiO2−P2O5. Raman scattering analysis revealed the existence of isolated orthborate (BO3)3- groups with increasing rare-earth content. The obtained glass exhibited an excellent Faraday rota…
Development of orientation-induced precursor structures (nuclei) prior to crystallization in isotactic polypropylene melt under shear flow was studied by in-situ synchrotron small-angle X-ray scattering (SAXS) and rheo-optical techniques. SAXS patterns at 165°C immediately after shear (rate = 60 s−1, ts = 5 s) showed…
This study investigates liquid transfer from fabric layer to layer and liquid interaction between different fabrics in clothing systems. A higher external pressure leads to an early onset of transfer wicking. There exists an optimum value of external pressure for the maximum water transfer. The greater the water conte…