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。
Abstract A model describing the three-dimensional folding of the triangular lattice on the face-centered cubic lattice is generalized allowing the presence of defects, which are related to cuts in the two-dimensional network. The model can be expressed in terms of Ising-like variables with nearest-neighbor and plaquet…
As-prepared single-walled carbon nanotubes (SWNTs) are generally mixtures of semiconducting and metallic species, the proportion of the former being around 67%. Since most applications of SWNTs are best served by semiconducting or metallic nanotubes, rather than by mixtures of the two, methods which would directly yie…
OsO(4)(2-) immobilized on a poly(benzyl ether) dendrimer with a tertiary nitrogen at its core position efficiently catalyzed the homogeneous dihydroxylation of olefins with a low level of osmium leaching. The dendritic osmium catalyst could be applied to the wide range of olefins. Furthermore, the dendritic osmium cat…
Three new D-lactone ring isomeric phragmalin-type limonoids, tabulalins G-I (1-3), were isolated from the stem barks of Chukrasia tabularis var.velutina.Compound 1 possesses C-16/C-30 δ-lactone ring (D), which was unusual in phragmalins, and that of 2 and 3 were C-16/C-17.The structures of these three new compounds we…
A new compound [Co(bipy)3][Mo6O19]·H2O (1) (bipy = 2,2´ -bipyridine) has been synthesized under hydrothermal conditions and characterized by IR spectroscopy, TG analysis and single-crystal X-ray diffraction. The crystal structure consists of a [Co(bipy)3]2+ cation, an [Mo6O19]2− anion, and a water molecule. In 1 each…
International audience
The measurement of carrier mobility in organic semiconductor material and device is one of important study contents. The hole-only devices based on the different solvent blends of poly (3-hexylthiophene) (P3HT) and [6, 6]-phenyl C61-butyric acid methyl ester (PCBM) as acceptor are fabricated, the structures of the dev…
The present study was aimed at developing and exploring the use of PEGylated poly (propylene imine) dendritic architecture for the delivery of an anti-bacterial drug, Ciprofloxacin. For this study, PEGylated poly(propylene imine) dendritic architecture was synthesized and loaded with Ciprofloxacin and targeted to the…
This research investigates the influence of certain vitamins (A and D 2 ) on the possibility of hydroxyapatite formation on polymer surfaces.A coating method based on biomimetic techniques was used to form a crystalline hydroxyapatite thin layer on porous polyurethane matrix.The method is based on a wet process of hyd…
Chitosan coating serve as an antioxidant and micro-diffusion barrier and prevents the loss of water, texture, odour, color or overall accessibility in seafood. The preservation of shrimps using chitosan dips seems promising and effective, as demonstrated in this study. The antimicrobial property of chitosan is infheno…
Проведены результаты экспериментов по сварке давлением титанового сплава ВТ6 в условиях низкотемпературной сверхпластичности. Показано, что чем ниже температура, тем выше должно быть значение давления относительно напряжения течения при этой температуре. При этом качество твердофазного соединения титанового сплава ВТ6…
The paper describes the results of long-term investigations related to the development of the technology of superplastic forming and pressure welding (SPF/PW). Part I presents the international experience for processing standard articles of aerospace engineering, such as hollow blades, wing and shell panels. The prosp…
Upprättat; 2012; 20121210 (andbra)
Because of the layered structure of vanadium pentoxide films (V2O5), approved by XRD measurement, sensitized from different hydrated V2O5.nH2O sols, demonstrated anisotropic conductivities in current voltage (I-V) measurement. Conductivity values, originated from electronic and ionic conductions, differed provided t…
Superkondenzatori (ultrakondenzatori, elektrokemijski dvoslojni kondenzatori) su uređaji s vrlo velikom specificnom snagom i velikim elektricnim kapacitetom. Neznatno se trose, dugog su životnog vijeka i velike efikasnosti. Prvotno su malo koristeni (memorijska podrska u potrosackim elektronickim uređajima i sustavima…
This paper presents an analysis of the application potentials implied in the equivalent stiffness changes of complex mechanical structures as a measure of damage caused by low-velocity impacts. In a series of drop-weight tests of a commercial composite component, the impact force time variation is measured, and by cal…
Abstract This study was carried out to evaluate the phenological changes resulting from external impacts on Posidonia oceanica meadows along the Aegean coast. Triplicate samples were collected from 17 stations at 8 and 10 m depths by SCUBA diving between April and June 1999. The water temperature was measured and sedi…
Commercially available smectite clay (bentonite) was modified by ion exchange reaction usingN-Cetyl-N,N,N-trimethylammoniumbromide (CTAB) to prepare organophilic clay. The reaction was carried out in acidic medium (conc. HCl) under controlled stirring at a temperature of 80oC for a specific period of time. Physico-che…
Plastic injection molding is an important process to produce plastic parts. However, the difficulty in determining optimum process parameters setting may cause defects of the injected molded parts such as shrinkage. In this study the authors investigate the process parameters which will affect the shrinkage defect on…
Author(s): Vuong, Helen Elaine | Advisor(s): Brecha, Nicholas C; White, Stephanie A | Abstract: In the retina, somatostatin (SRIF) is an inhibitory neuropeptide that influences multiple cell types, including bipolar, amacrine and ganglion cells. SRIF is reported to have multiple cellular actions including modulation o…