Materials Literature
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Aqueous solutions of the fullerene C 60 (nC 60 ) were prepared by simple mixing of the solution of C 60 in N-methylpyrrolidone (MP) with deionized water or an aqueous solution of a low-molecular-weight natural substance (L-amino acids, monosaccharides, peptides, or glycerol) used as stabilizing agents (SAs) followed b…
Magnetite nanoparticles have been obtained with stable coatings formed from bovine and human serum albumins. The coatings are fixed by free-radical cross-linking of the proteins with the use of their ability to form interchain covalent bonds under the action of free radicals, which are generated with participation of…
The only experimental strategy to address the structure of folding transition states, the so-called Φ value analysis, relies on the synergy between site directed mutagenesis and the measurement of reaction kinetics. Despite its importance, the Φ value analysis has been often criticized and its power to pinpoint struct…
The influence of bath pH and also citrate and molybdate concentration, on the electrodeposition process of ternary Zn-Ni-Mo alloy coatings has been examined. The occurrence of the particular forms of the metal-citrate complexes in the electrolytes was analysed using UV-VIS spectroscopy and on the basis of the stabilit…
The behavior of Rayleigh surface waves and the first mode of the Love waves in isotropic media with positive and negative Poisson’s ratio is compared. It is shown that the Rayleigh wave velocity increases with decreasing Poisson’s ratio, and it increases especially rapidly for negative Poisson’s ratios less than −0.75…
ZnWO4 nanowires array was prepared on the titanium substrate by a facile hydrothermal synthesis, in which the average length of ZnWO4 nanowires is about 2um and the diameter of individual ZnWO4 nanowire ranges from 50 to 70 nm. The bipolar resistive switching effect of ZnWO4 nanowires array was observed. Moreover, the…
Free radicals and reactive oxygen species (ROS) are important intermediate products in physiological processes. In the healthy cell, they are generated and regulated by enzymes and low molecular weight antioxidants. Overproduction of ROS leads to a large list of diseases, so the determination of antioxidant activity o…
Multiple breakdown model of carpet-bombing-like concaves formed during dielectric breakdown of silicon carbide metal–oxide–semiconductor capacitors, Sato, Soshi, Hiroi, Yuki, Yamabe, Kikuo, Kitabatake, Makoto, Endoh, Tetsuo, Niwa, Masaaki
본 연구에서는 전자장비 내방사화 기술의 새로운 효율적 접근방법인 전원제어형 방호장치에서 핵심 기능을 수행하는 고속 반도체 센서를 개발하고 그 특성을 분석하였다. 먼저, 펄스방사선에 의한 다이오드 내부에서의 생성 전하를 계산한 후 TCAD로 모델링하여 42 μm 진성층의 실리콘 에피텍시 웨이퍼 기반의 고속 신호탐지용 PIN 다이오드 센서를 다양한 구조로 설계하였다. PAL의 Test LINAC의 전자빔 변환 감마방사선 4.88E8 rad(Si)/sec에 대한 실측시험에서 소자의 면적에 비례하는 광감도와 응답속도 증가 결과를 얻었으며 포화특성과 소자의 균일성을 기준으로…
In this paper we present the electrochemical study of self-assembled monolayer (SAM) created of aliphatic 1-hexadecanethiol (1-HDT) molecules adsorbed onto the gold and Au/Cr QCM crystal surfaces. We investigated the influence of 1-HDT concentration and scan rate on potential values for both adsorption and desorption…
One of the topical trends of the innovative development of construction-investment area is the significant increase in the height of residential and office buildings, providing comprehensive safety of their construction, and of human activity and work in them.
X-ray serial nanocrystallography is a new technique for determining the three-dimensional structure of biological macromolecules from data on the diffraction of ultrashort pulses generated by X-ray free-electron lasers. The maximum achievable resolution for a set of experimental data as a function of the sample sizes…
Aluminium/polyphenylene sulphide (Al/PPS) composites were prepared using micrometre sized Al particles as toughening agents. The influences of the Al particles and of different coupling agents on the mechanical properties of the Al/PPS composites were studied using scanning electron microscopy (SEM), an electric testi…
Wollastonite glass–ceramic was prepared by using a sintering method. The chemical compositions were in the wollastonite crystallisation primary field of the Na2O–CaO–SiO2 system. Effects of heat treatment conditions on phase transformation and microstructure evolution of wollastonite glass–ceramic in Na2O–CaO–SiO2 sys…
We developed a series of micro-sized porous coordination polymers from Mn ( III )-porphyrin biscarboxylate and In ( III ) whose morphologies were systematically modulated by the addition of adequate amount of water. Regardless of a wide range of morphology distribution, they are isostructural, confirmed by the identic…
The following article deals with the problem of icicles formation on the roofs and the elimination methods. The attic roofs with pitched roofing are highly susceptible to this negative phenomenon. In work warming of garret overlappings as a method of prevention of formation ice-dams on roofs of buildings in the operat…
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A solvothermal method was developed to synthesize silicon carbide nanoflakes and nanowires through pyrolysis of polymethylsilane (PMS) at 550 °C in solution. Evidences from HRTEM, SAED, FTIR and XPS indicated that the products were amorphous nanostructures which mainly consisted of Si, C elements and trace amount O ele…
The paper considers variants of constructing the process image introduced by A.A. Ilyushin for loading of a representative macrovolume of polycrystalline metal with high displacement gradients. Analysis is performed to clarify whether the loading process image in the variants under study depends on the rigid rotation…
This paper presents a typical application for a newly developed thermoelectric energy harvesting system. The proposed solar thermoelectric generator (TEG) operates with phase change material (PCM) day and night. An energy management system was connected with the TEG to increase the output voltage while the harvested p…