Materials Literature
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Halomonas marina HMA 103 (MTCC 8968), the moderately halophilic bacterium isolated and characterized from the solar saltern of Orissa, India, grows optimally at 10% (w/v) NaCl in culture medium and is able to synthesize poly(3-hydroxybutyrate) [P(3HB)] during growth. This study is an attempt to optimize the cultural c…
Abstract Summary: Cellulose derivatives having carboxyl‐ or carboxymethyl‐ and sulphate groups were synthesized with control of reaction conditions to regulate the distribution of substituents and molecular weights of the products. Sodium cellulose sulphates (NaCS) were synthesized through acetosulphation of cellulose…
The structural data for single crystals of (Na0.5R0.5)MO4 and (Na0.5R0.5)MO4:R′ (R = La, Gd; R′ = Er, Tm, Yb; M = W, Mo) grown by the Czochralski method were studied by X-ray diffraction and analyzed. The structural characteristics of these compounds depend on the sort of cations M and R. The formation of superstructu…
Ecological awareness is all important for our environment. How to transfer the waste heat to electric power from exhaust pipes is discussed, which might serve to decrease the consumption of petroleum. We have presented a model of a thermal resistor network to estimate the power generated with thermoelectric generator…
Nanoelectromechanical devices, which can be used as nanotools in nanofactories, were fabricated by focused ion beam chemical vapor deposition (FIB-CVD). The devices are made of diamond-like carbon (DLC), deposited on a Si substrate using gasified phenanthrene (C14H10) as a carbon source. The Young modulus and density…
The equation of state of $\ensuremath{\alpha}$- and $\ensuremath{\beta}$-boron have been studied by means of density-functional theory-generalized gradient approximation-projector-augmented wave (ABINIT) calculations up to 300 GPa. No distortion is observed in the $\ensuremath{\alpha}$ phase. Two structures have been…
Collagen fibers form the basic structural components of extracellular matrix (ECM) of vertebrates that serve to: (1) store elastic energy during muscular deformation, (2) transmit stored energy into joint movement, and (3) transfer excess energy from the joint back to the attached muscles for dissipation. They also ac…
Individual nitrogen centers N0 and nitrogen pairs N 2 + have been detected and identified in natural diamond nanocrystals by means of the high-frequency electron spin resonance method. The N0 nitrogen centers have been observed in synthetic diamond nanocrystallites with a size of less than 10 nm produced by high-tempe…
We have successfully prepared the new layered oxypnictides Sr 4 Sc 2 O 6 M 2 As 2 (M=Fe and Co). They adopt the tetragonal structure, being the same as that of Sr 4 Sc 2 O 6 Fe 2 P 2 . The lattice constants are a =0.4045 nm and c =1.5802 nm for M=Fe, and a =0.4045 nm and c =1.5695 nm for M=Co, respectively. Their tran…
This article reports on an extensive investigation on a functionalized phthalocyanine, namely, copper(II) tetrakis-(isopropoxy-carbonyl)-phthalocyanine (TIPCuPc). The self-association of the molecules is extensively described in solution in different solvents (DMSO, DMF, CHCl(3), pyridine) by means of UV-vis steady st…
Abstract The paper presents investigations on the deposition of plasma polymerised films at atmospheric pressure as a pretreatment for painting and adhesive bonding of aircraft aluminium structures. Two different plasma jet sources are employed, one based on a controlled arc discharge and air as process gas, and anoth…
Nano- Mg(OH) 2 was synthesized by co-precipitation method. Peaks between 500 and 1250 cm -1 in FTIR spectroscopy confirmed the presence of metal hydroxide stretching. TGA inferred that above 600°C, 50% of residue weight remained. HRTEM of nanocomposite gave an idea about the nonspherical morphology of particles of siz…
We have numerically and experimentally investigated an optical device based on a guest–host (GH) liquid crystal (LC) for a viewing angle switching (VAS) application. This device should work as an additional panel, mounted on a major panel of conventional liquid crystal display, to implement the VAS operation. Our prop…
Abstract During the past decade, fabrication of bulk nanostructured metals and alloys using severe plastic deformation (SPD) has been evolving as a rapidly advancing direction of nanomaterials science and technology aimed at developing materials with new mechanical and functional properties for advanced applications.…
Abstract Alumoåkermanite, (Ca,Na) 2 (Al,Mg,Fe 2+ )(Si 2 O 7 ), is a new mineral member of the melilite group from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, Tanzania. The mineral occurs as tabular phenocrysts and microphenocrysts in melilite-nephelinitic ashes and lapilli-tuffs. Alumoåkerman…
A novel way to describe the complexity of biological and engineering approaches depending on the number of different base materials is proposed: Either many materials are used (material dominates) or few materials (form dominates) or just one material (structure dominates). The complexity of the approach (in biology a…
Abstract A 0.38″ field‐sequential‐color liquid‐crystal‐on‐Silicon (LCOS) microdisplay was developed for mobile projectors. An embedded sensor and heater was integrated onto the LCOS for ensuring a 90% NTSC color at a −20 °C ambient environment. Optical performance and reliability of this LCOS were characterized and di…
Kurzfassung Die Korrosionsbeständigkeit von Schneidwaren wird derzeit noch in einem zyklischen Auslagerungsversuch mit anschließender visueller Bewertung geprüft. Neben der langen Versuchsdauer und unspezifischen Prüfung kommt es teilweise auch zu falschen Prüfaussagen. Durch die Anwendung und Weiterentwicklung einer…
对南大洋及南海上层水体<sup>210</sup>Po/<sup>210</sup>Pb不平衡进行了研究, 发现表层水体<sup>210</sup>Po亏损, 次表层或中层水体<sup>210</sup>Po过剩, 且颗粒态<sup>210</sup>Po比活度与颗粒有机碳(POC)之间存在良好的正相关关系, 证实<sup>210</sup>Po相对于其母体<sup>210</sup>Pb的亏损与过剩可示踪颗粒有机物的输出与再矿化. 次表层水体中<italic>δ</italic><sup>13</sup>C的减小及<italic>δ</italic><sup>15</sup>N的增大等证据均支持<sup>210</sup>Po的…
Espumas vítreas do sistema Li2O-ZrO2-SiO2-Al2O 3 (LZSA) foram produzidas pelo processo gelcasting, associado à aeração de suspensões cerâmicas, sem controle atmosférico. Por meio da adição de diferentes concentrações de agente espumante (Fongraminox) foi possível obter espumas vítreas com densidade relativa variando e…