Materials Literature
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An essential ingredient in the generation of environmentally compatible pulp bleaching chemicals is sodium chlorate. Chlorate is produced in electrochemical cells, where the electrodes are the key components. In Sweden the so-called DSA !R electrodes with catalytic coatings have been produced for more than 35 years. T…
Conceptual design synthesis is recognized as the most critical design task, where functional decomposition and function to structure mapping are widely advocated as two fundamental synthesis strategies. However, these strategies only provide some top-level guidelines to the designers in carrying out such essential des…
This thesis reports the studies on the reaction of 1-azabutadienes with PhCH2Re(CO)5 to prepare the cyclometallated azabutadiene tetracarbonyl compounds. Three 1-azabutadienes with different reactivity on the N and C-1 carbons were prepared and their reactions with PhCH2Re(CO)5 were investigated. All the reactions gav…
In this study a mathematical model is developed in order to simulate fluorination reaction of uranium dioxide which leads to the production of uranium hexafluoride. The model considers homogeneous reaction for intermediate solid and a heterogeneous one for unreacted shrinking core. Also, this study tries to clearly sh…
Det här examensarbetet handlar om olika flätningar av olika naturfibrer, och att komma fram till en bra och hållbar kombination som går att använda till en sittmöbel. Jag har valt att studera vegetabiliska naturfibrer som man tillverkar snöre, rep eller dylikt av, alltså abacka/manila hampa, bambu, bananfiber, hampa,…
Summary. The paper presents the results of studies on the mechanical properties of thermoplastic starch (TPS) mouldings stored under low temperature. An infl uence was examined of freezing and chilling conditions on the selected properties of samples measured on the strength appliance Zwick type BDO-FBO 0.5 TH
Polar liquid crystalline phases are relevant for fluid liquid crystal phases observed in banana liquid crystals as well as for a class of polymeric liquid crystalline materials investigated recently. In this Brief Report we present the reversible dynamics for polar nematic liquid crystals with C∞v symmetry, where the…
Syntheses and thermal, optical as well as photoelectrical properties of carbazolyl-, triphenylamino- and 2-hydroxy-4-diethylaminophenyl-based hydrazones with reactive methacryloyl groups have been reported. All the synthesized materials form glasses with glass transition temperatures ranging from 9 to 50 degrees C. Th…
Optimal use of laminated composite materials can only be achieved if its most common failure mechanisms are well understood. One of the most common modes of failure in laminates is delamination, or the separation of adjacent material layers. Therefore, there is a need to be able to predict a laminated composite’s resi…
From the point of view of thermodynamic, materials are found as thermodynamically stable (equilibrium) or metastable phases. These can be characterized via functions of state that depend uniquely on the given state variables such as temperature, pressure and composition. The graphical representations of all thermodyna…
ORDER (Regarding Issuance of Partial Initial Decision) Today the Board issued a Partial Initial Decision (LBP-14-03) concerning the application of Nuclear Innovation North America, LLC for combined licenses under 10 C.F.R. Part 52 for the construction and operation of two new nuclear reactor units—proposed South Texas…
Using rigid-plastic finite element method, the plastic deformation of the strip was analyzed, flattening between work roll and the strip was calculated in three-dimensional elastic finite element method and the rolls elastic bending deformation was obtained by influence function method, from which a coupled mathematic…
The [FeFe]-hydrogenase contains an unusual active-site cluster, the H-cluster, composed of a [4Fe-4S] cluster bridged to a 2Fe subunit coordinated by CO, CN-, and a nonprotein bridging dithiolate. Three accessory proteins, HydE, HydF, and HydG are required for maturation of the H-cluster. It has been proposed that the…
Corresponding author: riwana@utp.edu.plUn-doped polycrystalline diamond thin films have been grown on tungsten substrates by hotfilament chemical vapor deposition (HF CVD) using a hydrogen and methanol vapor mixture.Diamond films have been analyzed by Raman spectroscopy and scanning electron microscopy(SEM). Cyclic vo…
The release of ruthenium in oxygen-rich conditions from the reactor core during a severe accident may lead to formation of significantly more volatile ruthenium oxides than produced in steam atmosphere. The effect of volatile ruthenium release in a case a reference BWR nuclear plant was studied to get rough-estimates…
We show the effects of shrinking the high contrast grating size on a wavelength-tunable VCSEL experimentally and theoretically. With a grating having only 4 periods, we demonstrate the fastest tunable VCSEL with speed >25 MHz.
Microbial life in extreme environments has been studied primarily for their metabolic activities. Very few commercial or industrial applications have been known from these systems. In this study, the metabolic pathways and properties of bacteria from a haloalkaliphilic environment of Soap Lake, Washington were employe…
We demonstrate strong optical activity (and circular dichroism) for both microwave and photonic achiral planar metamaterials. The effect arises from extrinsic chirality resulting from oblique incidence of light onto the metamaterial structures.
Objectives: The aim of this study is to assess the biological behaviour of porcine decellularized heterografts (Desc group) compared with cryopreserved homografts (Crio group) implanted in juvenile sheep. Methods: Decellularized porcine pulmonary heterografts were implanted in five animals and cryopreserved pulmonary…
Structural analysis of VVER-440 reactors in Paks done in Hungary in the framework of the project for the life time and capacity extension of the nuclear power plant. The main purpose of the calculations is a comprehensive design review of the main components on the base of the internationally accepted ASME BPVC [1] Di…