Materials Literature
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한국 전통발효식초로부터 분리된 Acetobacter sp. V6에 의한 bacterial cellulose (BC) 생산을 위한 최적 배지조성을 정치배양을 이용하여 조사한 후, 생성된 BC의 구조적 특성을 검토하였다. 탄소원으로 glucose 3%, 질소원으로 soytone 3%가 선정되었다. 또한 인산염은 K₂HPO₄ 0.8%였으며, 추가로 첨가한 NaH₂PO₄와 KH₂PO₄는 BC 생산증가를 나타내지 못하였다. 보조탄소원으로 ethanol 0.4%에서 가장 높은 BC 생산성을 나타내었다. 최적 배지조성하에서 배양 8일만에 최대 44.7 g/㎡의 BC가 생산되었으…
Medium energy ion scattering (MEIS) has been used to investigate ultrathin epitaxial films. The depth profiles of V2O3(0001) films grown on Pd(111) were examined. The results from this demonstrated that on this substrate the films grown are highly non-uniform, with a large distribution of thicknesses observed for each…
research-article Share on FEATUREMyth of the design process Author: August de los Reyes Microsoft Corporation Microsoft CorporationView Profile Authors Info & Claims InteractionsVolume 16Issue 5September + October 2009 pp 55–57https://doi.org/10.1145/1572626.1572638Published:01 September 2009Publication History 0citat…
The increasing demand for the production of polymers with more tight properties has placed great emphasis on the development of accurate and robust online monitoring techniques of polymerization reactions.Unfortunately, most of the main characteristics are not measurable online from analytical methodologies currently…
Dieser Bericht (Teil 2) befasst sich mit der Untersuchung der Schäden in einer Hybrid-Probeplatte aus Titan und CFK PEEK infolge des Aufpralls (High Velocity Impact) einer Stahlkugel (110 g / 30 mm Durchmesser). Ziel ist die Bewertung dieses Bauweisenkonzeptes hinsichtlich ihrer HVI-Beständigkeit. \nDie untersuchte Pl…
In order for further systematic maintenance of silkworm stocks kept in Korea we analyzed character quality of a diverse array of silkworm strains originated from several sericulture-practicing countries. The analysis of about ten qualitative characters from 67 strains (13 of Japanese strains, 15 of Chinese strains, 14…
Yaygin bir kullanim alanina sahip serigrafi baski yontemi, bircok degisik yuzeye baski yapmak icin yuzyillardir kullanilmaktadir, tekstil de bu alanlardan biridir. Kumas uzerine yapilan baskilarda, baski murekkebi basilan kumasin yapisi nedeniyle yuksek miktarda yayilma yapmaktadir. Bu yayilma baskinin kalitesini etki…
This thesis discusses a comprehensive study of the structure and properties of selected \nstacked perovskites using non-ambient powder and single-crystal x-ray diffraction, powder \nneutron diffraction, birefringence microscopy and dielectric spectroscopy. The major \nportion of this work focuses on materials forming…
Resent research on heavy metal biosorption has been focused on its mechanisms and principles. For effective metal removal/recoverythe process design has to be optimized for every type of application. That is most efficiently carried out based on computer simulations by means of mathematical models of the process. Ther…
Since the demand of plasticizers is increasing and limiting amount of petroleum, rice bran oil (RBO) can be used as an alternative raw material to produced epoxidized oil. Epoxidized rice bran oil (ERBO) can be used as plasticizers & stabilizers of polymers. This research is aimed to investigate the effect of reaction…
The III-nitride (AlGaInN) materials system forms the foundation for white solid-state lighting, the adoption of which could significantly reduce U.S. energy needs. While the growth of GaN-based devices relies on heteroepitaxy on foreign substrates, the heteroepitaxial layers possess a high density of dislocations due…
Der vorliegende Beitrag präsentiert die Forschungsergebnisse, \ndie am Deutschen Zentrum für Luft- und \nRaumfahrt e.V. (DLR) auf dem Gebiet der Fertigungstechnologien \nfür kohlenstofffaserverstärkte \nKunststoffe erarbeitet wurden. Um den Forderungen \naus der Luftfahrtindustrie nach immer schnelleren \nund effizien…
The results of calculations on numerical model of the microwave converter with the coaxial measuring aperture are discussed. Conditions at which it is necessary to consider radiating losses are found.
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The composites were fabricated by adding 0, 15, 20, 25[vol.%] Zirconium Diboride(hereafter, ZrB₂) powders as a second phase to Silicon Carbide(hereafter, SiC) matrix. The physical, mechanical and electrical properties of electroconductive SiC ceramic composites by Spark Plasma Sintering(hereafter, SPS) were examined.…
Abstract : The goal of this research program has been to establish a quantitative link between important strengthening mechanisms and the observed stress-strain behavior of complex, metallic aerospace materials via a modeling strategy involving mesoscale dislocation dynamics (DD) simulations and spatial homogenization…
Kurzfassung Ziel der hier vorgestellten Untersuchungen war es, die Einflüsse von variierenden thermischen Eigenschaften des Baustoffs sowie von unterschiedlichen Emissivitäten der Oberfläche auf die Ortung von Inhomogenitäten in Bauwerksstrukturen mit der aktiven Thermografie zu quantifizieren bzw. durch geeignete Aus…
Factor H (FH) is a plasma glycoprotein that plays a central role in regulating \nthe alternative pathway of complement. It is composed of 20 short complement \nregulator (SCR) domains. The SCR-1/5 fragment is required for decay acceleration \nand cofactor activity, while the SCR-16/20 fragment possesses binding sites…
The vast increase in the number of protein structures identified since the first high resolution protein structure was determined has shown that there are relatively few protein folds. The study of the folding of proteins has also expanded significantly since its inception. The contact-order of residues in the native…
The microstructure of directionally solidified AlSi7Mg0.6 alloys (A357) mainly consists of primary phase Al-dendrites in an AlSi eutectic matrix with some Mg2Si particles dilute in the interdendritic region. The dendritic network is conventionally characterized by measuring the primary dendrite spacing and the specifi…