• 산업식품공학
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• 제13권4호
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• pp.335-340
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• 2009

본 연구는 초미세분쇄기술을 이용하여 옥수수전분의 입자구조파괴가 이루어졌을 때 분자구조적, 물리적 변화가 어떻게 이루어지는지를 구명하고자 하였다. 초미세 분쇄처리 후 옥수수전분의 평균직경은 약 50% 감소가 이루어졌으며 비표면적은 567% 증가하였다. 초미세분쇄처리 전 후의 옥수수전분에 대한 분자량분포를 GPC로 측정한 결과 분쇄 후 저분자량의 Peak II의 면적이 21.0%에서 86.5%로 상승하였다. 손상전분 함량은 각각 9.63%와 83.57%로 초미세분쇄처리에 의하여 크게 증가하였다. 옥수수전분의 경우는 겔(gel)을 형성하였으나 초미세분쇄처리 후에는 전분의 분쇄과정에서 전분입자파괴와 아울러 옥수수전분의 분자량이 저분자화 되면서 겔 형성능력이 크게 저하되었다.

• Journal of Applied Biological Chemistry
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• 제53권2호
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• pp.108-111
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• 2010

New salens (3) and their Cobalt complexes (4) were prepared from meso-1,2-bis(ortho-hydroxyphenyl)-1,2-diaminoethane (1) and substituted salicylic aldehydes (2). In contrast to symmetric structure of salen ligand (3), salen-Co(III) complexes (4) showed dissymmetric molecular structure due to participation of three hydroxyl groups in complex formation. One of the salens (3b) revealed decrease in Cyclin D1 expression, which represents anti-cancer property.

• 한국식품영양학회지
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• 제3권1호
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• pp.35-38
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• 1990

For the purpose of the production of single cell protein from rice bran oil, yeast was isolating from soil. It was belonging to Candida albicans Species. These experiments were conducted to find out the property on yeast cell from rice bran oil Molecular weight for the main protein on yeast cell protein from rice bran oil separated by 1% SDS polyacrylamide gel electrophorosis was 22, 000.

• 한국염색가공학회지
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• 제4권1호
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• pp.26-29
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• 1992

Ternary solutions that cellulose triacetate (CTA) and polyethylene terephthate (PET) were mixed in a solvent trifiuoroacetic acid (TFA)/methylene chloride (MC) (6/4 : v/v) showed phase separation and mesophase formation. The ternary systems which were mesomorphic were spun into a methanol both and relatively strong cellulosic fillaments were successfully produced. Analysis showed that CTA/PET fibers have fibrillar structure and high orientation parallel to the fiber axis. These fibers proved to be molecular composite and have relatively high strength and modulus as spun.

• Journal of Photoscience
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• 제10권3호
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• pp.251-255
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• 2003

The composites fabricated by blending nonlinear optical (NLO) chromophore such as {4-[2-(4-nitrophenyl)-vinyl] phenyl}diphenylamine (NVPDA) with photoconducting crosslinkable matrix, bis-(4-ethynylphenyl)-(4-octyloxy-phenyl)amine (BEOPEA), showed photorefractive property. Many problems faced in typical organic photorefractive systems such as time-consuming chemical synthesis, difficulty in rational design, intrinsic instability and phase separation could be avoided by this fabrication method.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회A
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• pp.518-520
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• 2007

Since all essential property of semiconductor materials are structure-sensitive, the understanding of the deformation mechanism and the deformed structure which can be formed in the nanometer-scale devices is very crucial. To investigate the deformation mechanism and the corresponding structures, nanometer-scale contact loading simulations are carried out using molecular dynamics in silicon and gallium-arsenide.

• Bulletin of the Korean Chemical Society
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• 제31권1호
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• pp.242-245
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• 2010

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 1996년도 정기총회 및 학술발표회
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• pp.21-21
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• 1996

The hyperthermostable protein, rubredoxin from Pyrococcus furiosus is 53-residue protein with a three-stranded anti-parallel $\beta$-sheet and several loops. To investigate the effect of changes of electrostatic and hydrophobic interactions on the structure and dynamic property of P. furiosus rubredoxin, molecular dynamics simulations in water were performed on three mesophilic rubredoxins, P, furiosus rubresoxin, and 5 mutants of P. furiosus rubredoxin. (omitted)

• Bulletin of the Korean Chemical Society
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• 제15권10호
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• pp.889-890
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• 1994

A comparative molecular field analysis (CoMFA) on the substituent effect of the palladium(Ⅱ) catalyzed [3,3]-sigmatropic rearrangement of allylic esters was studied to show a good correlation between the electrostatic property of substituents and the reaction rate. The CoMFA result suggests that the reaction rate will increase as the electron-donating ability of substituents increases.

• 반도체디스플레이기술학회지
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• 제12권1호
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• pp.61-65
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• 2013

We investigated the wearable dynamics of diamond spherical abrasive during the substrate surface polishing under the pad compression via classical molecular dynamics modeling. We performed three-dimensional molecular dynamics simulations using the Morse potential functions for the copper substrate and the Tersoff potential function for the diamond abrasive. The pad hardness had a big impact on the wearable dynamics of the abrasive. The moving speed of the abrasive decreased with increasing hardness of the pad. As the hardness decreased, the abrasive was indented into the pad and then the sliding motion of the abrasive was increased. So the pad hardness was greatly influenced on the slide-to-roll ratio as well as the wearable rate.