Materials Literature
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Diatoms (Bacillariophyta) are one of the most diverse algal groups in the Antarctic Region and play a dominant role in almost all freshwater and terrestrial ecosystems. Despite this overall occurrence, little is known about the diversity, ecology and biogeography of this group in the Maritime Antarctic Region. The mai…
A method of producing graphene by the electrochemical insertion of alkylammonium cations in a solvent into graphite is disclosed.
Se ha demostrado que el óxido de niobio mesoporoso es un catalizador eficaz para la deshidratación de D-xilosa a furfural, alcanzando una conversión del 92% y un rendimiento de furfural 49,3% a 170º C y 90 minutos. La lixiviación de Nb, determinada por ICP-MS, era inferior al 0,5% en peso de la concentración de Nb ini…
Jeklarska industrija danes predstavlja glavno gonilo svetovnega gospodarstva. Proizvodnja jekla se iz leta v leto povecuje. Jekleni izdelki in polizdelki se uporabljajo v razlicnih panogah gospodarstva kot so gradbenistvo, avtomobilska industrija, zdravstvo in se drugje. Kupci želijo jeklo najvisje kakovosti, zato je…
Bu çalışmada, düşük sıcaklıklarda konvansiyonel nitrürleme işlemlerinin AMS 5662 ve AMS 5663 ısıl işlemlerine tabi tutulmuş Inconel 718 alaşımlarının yüzey özelliklerine etkisi incelenmiştir. Nitrürleme işlemleri gaz ve ısı taşıyıcı olarak Al2O3 partikülleri içeren akışkan yatak tipi bir fırında %60 amonyak + %40 azot…
status: Published
Hidrojeller fiziksel ya da kimyasal çapraz bağlarla oluşan, suda çözünmeyen ancak su absorplayabilen hidrofilik üç boyutlu polimer ağ yapıların suda şişmeleri ile oluşan malzemelerdir. Su absorplama yeteneği polimerin tipine ve çapraz bağlanma derecesine göre değişir. Hidrojeller endüstriyel alandaki potansiyel uygula…
Vinegar production requires acetic acid bacteria that produce, tolerate, and conserve high levels of acetic acid. When ethanol is depleted, aerobic acetate “overoxidation” to carbon dioxide ensues. The resulting diauxic growth pattern has two logarithmic growth phases, the first associated with ethanol oxidation and t…
Hydrogen storage over chemicals containing protic and hydride hydrogens-materials design and catalytic modification
In essence, we have contributed significantly to the solid-state chemistry of thorium, uranium, and neptunium, with specific emphasis on the chalcogenides of these elements. The thorium and uranium chemistry was done at Northwestern University; that of neptunium was done in collaboration with Dr. Lynda Soderholm at Ar…
Chlor-alkali is one of the most important processes in the chemical industry. It produces chlorine and caustic soda, which become the main feedstock of daily products. The aim of this study is to report the phenomenon of plasma electrolysis and how it can be used in chlor-alkali production for more efficient energy co…
This paper reports the effect of TiCl4 on the performance of ZnO based DSC. ZnO was used due to its stability against photo-corrosion and photochemical properties similar to TiO2. Thin films of nanocrystalline ZnO were deposited on transparent conducting oxide glass using spray method. The ZnO films were treated using…
Two formulations of EPDM elastomer, one substituting a UV stabilizer for the normal antioxidant in this polymer, and the other the normal formulation, were synthesized and samples of each were exposed to gamma irradiation in initially pure deuterium gas to compare their radiation stability. Stainless steel containers…
Biodegradable copolymer microsphere poly (ECH-co-NVP) was synthesized by a ring-opening polymerization process of Epichlorohydrin and N-vinyl-2-pyrrolidone.The copolymerization of Epichlorohydrin (ECH) and N-vinyl-2pyrrolidone (NVP) catalyzed by Maghnite-H + (Mag-H + ) was investigated. The effect of some factors such…
Abstract : Progress during the prior funding period includes understanding of fracture-induced mechanophore activation, development of a new computational model for predicting mechanochemical phenomena, and the development of new analytical techniques to study mechanochemistry. These studies are making it possible to…
D. Cramb* and co-workers report on page 3118 that nanoparticles circulating in angiogenic tissue partition into surrounding tissues through fenestrations in the blood vessel walls, depending on the nanoparticle properties. The dependence of the portioning rate on nanoparticle size suggests that the mechanism is largel…
Abstract Biodegradable constructs, providing both mechanical support to growing tissues and timed release of biological agents, are highly desired in tissue engineering. This study aimed to develop a platform technology that responds to these challenges. Accordingly, we report herein on model systems in which microsph…
We develop a theory of time-resolved pump–probe optical spectroscopy of intraband absorption of a probe pulse inside an anisotropic semiconductor nanorod. The absorption is preceded by the absorption of the pump pulse resonant to an interband transition. It is assumed that the resonantly exited states of the nanorod a…
We propose a new type of optical spectroscopy of anisotropic semiconductor nanocrystals, which is based on the welldeveloped stationary pump-probe technique, where the pump and probe fields are absorbed upon, respectively, interband and intraband transitions of the nanocrystals’ electronic subsystem. We develop a gene…
In this paper we report the effect of water absorption on pristine and 75 MeV oxygen ion-irradiated kapton-H polyimide by using the thermally stimulated depolarization current (TSDC) technique. The TSDC spectra reveal two significant peaks at low and intermediate temperatures around 30°C and 110°C termed as γ-peak (ab…