Materials Literature
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The interaction of β-cyclodextrin with benzoic acid was studied by UV and IR spectroscopy, X-ray diffraction, and thermogravimetry. The introduction of the benzoic acid molecule into the internal hydrophobic β-cyclodextrin cavity and additional stabilization by weak H-bonds caused the formation of 1: 1 axial inclusion…
We investigated cathode luminescence of ZnCdS/ZnSSe heterostructures and structures with quantum wells (QW) grown by vapor phase epitaxy from metalloorganic compounds depending on the excitation level, composition, and thickness of the ZnCdS layer. The observed dependences are explained by specific features of the ene…
Lifetime of hot-work tools is often limited by the development of crack nets as a consequence of thermal and/or mechanical fatigue loading. In this paper, the isothermal fatigue behaviour of the tool steel AISI H11 (German grade X38CrMoV 5-1) under stress controlled uniaxial tension-compression loading with zero mean…
Leucoencephalopathy caused by antineoplastic drugs was reviewed. This leucoencephalopathy primarily involved the cerebral white matter, caused by various anti-neoplastic drugs such as carmofur, fluorouracil, cytarabine, cisplatin, tegafur, methotrexate, tacrolimus, and interferon alfa. The interval between the time of…
Structural evolution of Co/Ag/Ge(111) at high temperatures was studied by using scanning tunneling microscopy and low energy electron diffraction. The mean square root of 3 x mean square root of 3-Ag layer between the substrate Ge( 11) and Co adatoms can avoid the formation of Co-Ge compounds below 800 K. The Co atoms…
A thick film type of limiting current oxygen sensor which uses yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2MnO3 (LSM) as diffusion barrier was developed successfully. The oxygen sensor showed excellent performance at oxygen concentrations ranging from 0 to…
Industrial wood cutting is a highly demanding application for cutting tool materials as a wedge angle of ~50°, a tip radius in the 1 m range, and high wear, temperature and corrosion resistance are needed. For this application Si3N4 based ceramic matrix composites (CMC) were developed. Cutting tests showed that reinfo…
The effects of O 2 plasma treatment on both the chemical composition and work function of an indium–tin-oxide (ITO) film were investigated. ITO films were deposited on non-alkali glass substrate by super density arc plasma ion plating for application in active-matrix organic light-emitting diodes (OLEDs). The water co…
Toray T300 PAN-based carbon fibers were surface oxidized in air at 300, 400 and 500 °C. The composition of surface was determined by X-ray photoelectron spectrometry (XPS), and the monofilaments of original carbon fiber and surface oxidized carbon fibers were tensile tested at room temperature. Three-dimensional carbo…
A microscopic model is proposed, which describes the structure and thermodynamic properties of cementite (an ordered iron carbide with a composition of Fe 3 C 1 − δ ) and the phase equilibria between cementite and austenite (a disordered solid solution of carbon in face-centered cubic iron). Based on this model, chemi…
We fabricated a new light-emitting device that combined a polymer light-emitting diode (PLED) and a vertical-type metal-base organic transistor (MBOT) through a floating electrode. By employing a layered floating electrode of Mg:Ag/Au, the MBOT on the PLED was operated successfully and a current amplification factor o…
Charge state 1+ions are required as a primary ion source for Relativistic Heavy Ion Collider-electron beam ion source (RHIC-EBIS) at BNL and laser ion source (LIS) is a candidate as one of the external ion source since low energy and low charge state ions can be generated by lower power density laser irradiation onto…
The solubility of aqueous electrolyte solutions is a critical property for absorption refrigeration and heat pump working fluids. In this paper, we report a systematic study on the solubility of 21 alkaline nitrate and nitrite mixtures determined by a visual polythermal method. The solubility of the mixtures (LiNO 3 +…
X-ray studies of polycrystalline samples of monosilane SiH4 are done in the existence regions of the low-temperature and high-temperature phases with the use of photometric and diffractometric methods. It is found that the unit cells of both phases have monoclinic symmetry. The phase transition from the low-to the hig…
After about 50 years of fusion research the time has arrived when fusion processes in experimental plasmas are increasingly getting important. In JET the genuine fuel of a fusion reactor was used for the first time in late 1991, in TFTR the same happened in 1993, and in JET an extended period of experiments of this ki…
Boron neutron capture therapy (BNCT) is a binary cancer treatment based on the nuclear reaction of two essentially nontoxic species, (10)B and thermal neutrons. High accumulation and selective delivery of boron into tumor tissue are the most important requirements to achieve efficient neutron capture therapy of cancer…
The very high-temperature gas-cooled reactor (VHTR) is envisioned as a single- or dual-purpose reactor for electricity and hydrogen generation. The concept has average coolant temperatures above 9000C and operational fuel temperatures above 12500C. The concept provides the potential for increased energy conversion eff…
A theory of noncatalytic partial oxidation of methane in a superadiabatic cyclic compression chemical reactor using the operating principle of internal combustion engine is developed. It is shown that in a two-stroke reactor the conversion of methane to syngas with a H 2 /CO ratio equal to 2 reaches 0.95 to 0.99 at lo…
Adenylosuccinate lyase (ASL) of Bacillus subtilis is a homotetramer in which three subunits contribute to each of four active sites. We sought to evaluate the types of interactions responsible for subunit association by studying the enzyme's oligomeric structure at low temperatures as compared to 25 degrees C, in the…
New innovative direct extrusion process variants, curved profile extrusion (CPE), twisted profile extrusion (TPE), and hollow profile extrusion (HPE), which increase the flexibility of aluminum profile manufacturing processes, are presented in this paper. These processes are characterized by influencing the material f…