• 제목/요약/키워드: binding strength

검색결과 242건 처리시간 0.028초

소금과 Glucono-$\delta$-Lactone의 첨가 및 초고압 처리가 재구성 돈육의 이화학적 특성에 미치는 영향 (Effects of Salt, Glucono-$\delta$-Lactone and High Pressure Treatment on Physico-Chemical Properties of Restructured Pork)

  • 홍근표;박성희;김지연;고세희;민상기
    • 육가공
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    • 통권34호겨울호
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    • pp.26-39
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    • 2007
  • 본 실험은 소금 및 GdL의 첨가가 세척 및 가압 처리된 재구성육의 이화학적 특성에 미치는 효과를 규명하고자 실시되었다. 소금 및 GdL의 첨가는 재구성육의 결착강도를 현저하게 증가시켰고, 저염농도 또는 소금이 무첨가 되어도 소량의 GdL의 첨가에 의한 결착강도의 향상을 기대할 수 있었다. 그러나 GdL의 첨가는 색도를 가열처리와 유사하게 변색시켰고, 이러한 변색은 GdL의 증가와 더불어 현저하였다. 그러나 이들 단점은 세척이나 기타 첨가물에 의하여 향상시킬 수 있으리라 판단되었다. 따라서 본 실험의 결과에 의하면 소량의 소금 및 GdL의 조합을 통하여 바람직한 결착강도 및 변색 저하를 기대할 수 있었고, 첨가된 인산염과 carrageenan에 의한 보수력의 향상 효과를 얻을 수 있었다.

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Effects of Non-meat Protein Binders and Acidification on the Efficiency of Cold-Set Pork Restructuring by High Pressure

  • Hong, Geun-Pyo;Chun, Ji-Yeon;Lee, Si-Kyung;Choi, Mi-Jung
    • 한국축산식품학회지
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    • 제32권3호
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    • pp.301-307
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    • 2012
  • We investigated the effects of non-meat protein binders combined with glucono-${\delta}$-lactone (GdL) on the binding properties regarding restructured pork prepared by high-pressure treatment. Soy protein isolate (SPI), casein (CS), whey protein concentrate (WPC), and egg white (EW) were used as non-meat protein binders and compared with the control (no binder) and with the ${\kappa}$-carrageenan (KC) treatment. The compression and depression rates were 2.3 and 37 MPa/s, respectively, and pressurization was conducted at 200 MPa for 30 min at $4^{\circ}C$. After pressurization, the physical properties (pH, water-holding capacity, color, tensile strength, and microscopic structure) of the sample were evaluated. The combination of pressurization with acidification enabled cold-set meat binding, and the binding strength of restructured pork was enhanced by the addition of non-meat proteins. Among binders, SPI demonstrated the best efficiency in binding meat pieces. Therefore, the present study demonstrated that the combination of acidification and pressurization processes with the utilization of non-meat protein binders has a potential benefit in meat restructuring.

22.9 KV-y 배전선로용 전선보호관 전계강도 비교실험 연구 (A study on the electric field strength of the insulation cover using 22.9 kV-y distribution line)

  • 전영갑;서길수;차기식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 C
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    • pp.1871-1873
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    • 2000
  • There are many electrical accidents between bare wire and line post insulator which is degraded by long time using, causing leakage current on the surface of insulator. In this paper it is presented that the 22.9 Kv-y distribution lines are protected by binding cover which is needed from fog or rainy moisture, surges occurring by switching or lightening pulse. It is analyzed to investigate the unbalanced transfer characteristics and reflection coefficient by using binding cover and non-cover. It was tested the radio interference voltage in the test room and electric field strength by calculation between binding cover and non-cover. In the factory the leakage current causing on the surface of insulator was tested in the state of light load and heavy load.

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Electronic Detection of Biomarkers by Si Field-Effect Transistor from Undiluted Sample Solutions with High Ionic Strengths

  • Ah, Chil-Seong;Kim, An-Soon;Kim, Wan-Joong;Park, Chan-Woo;Ahn, Chang-Geun;Yang, Jong-Heon;Baek, In-Bok;Kim, Tae-Youb;Sung, Gun-Yong
    • Bulletin of the Korean Chemical Society
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    • 제31권6호
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    • pp.1561-1567
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    • 2010
  • In this study, we have developed a new detection method using Si field effect transistor (FET)-type biosensors, which enables the direct monitoring of antigen-antibody binding within very high-ionic-strength solutions such as 1$\times$PBS and human serum. In the new method, as no additional dilution or desalting processes are required, the FET-type biosensors can be more suitable for ultrasensitive and real-time analysis of raw sample solutions. The new detection scheme is based on the observation that the strength of antigen-antibody-specific binding is significantly influenced by the ionic strength of the reaction solutions. For a prostate specific antigen (PSA), in some conditions, the binding reaction between PSA and anti-PSA in a low-ionic strength reaction solution such as 10 ${\mu}M$ phosphate buffer is weak (reversible), while that in high-ionic strength reaction solutions such as 1$\times$PBS or human serum is strong.

국내.외산 메타카올린을 사용한 고강도 콘크리트의 내구특성에 관한 실험적 연구 (An Experimental Study on the Properties of Durability of High Strength Concrete Using Domestic.Foreign Meta-kaolin)

  • 이강필;이승민;이상수;송하영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2009년도 춘계 학술논문 발표대회 학계
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    • pp.239-242
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    • 2009
  • As the high-rise building increase due to the gravitation of population to big cities recently, it requires high quality and high performance of Concrete. As a result, people are keenly interested in Meta-kaolin as new admixture favorable from an economic perspective, which has strength and endurance with admixture at the same level like Silica-fume. Accordingly, as to Meta-kaolin, this study was to set by three levels like domestic one, foreign one, and Silica-fume, the water-binding material ratio 25%, and four level substitute like 0, 10, 20, and 30(%) in order to compare and analyze the quality durability of high-concrete according to the substitute of Meta-kaolin applicable with replacement of Silica-fume. As a result of performing experiment it was found that when water-binding material ratio increases, resistance of neutralization, carbonation, salt damage and sulfate decrease, and when replacement ratio of mineral admixture increases, depth of accelerating carbonation gets greater. Also, the combination of SF and MK-B favored resistance to chloride ion penetration better than MK-A, and it was found that when replacement ratio of binding material increases, the resistance to sulphuric acid increases. Therefore, based on this study, it was understood that meta-kaolin is useable in replacement of silicafume.

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클립형 연결장치로 결속된 90도 갈고리를 갖는 띠철근의 정착거동 (Clip-type Binding Implement Effect on Anchorage Behavior of 90-Degree End-Hooked Transverse Reinforcement in Reinforced Concrete Columns)

  • 박경언;윤현도
    • 한국구조물진단유지관리공학회 논문집
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    • 제24권4호
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    • pp.72-80
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    • 2020
  • 이 연구의 목적은 철근콘크리트 기둥에서 외부띠철근 상세로 이용되는 갈고리 양단 135도 교차 시공 상세에 대해, 대등한 구조적 성능을 확보하면서, 동시에 시공성을 개선할 목적으로 클립형 연결장치로 띠철근 갈고리 보강하는 방법을 제시하였다. 제안한 클립형 연결장치로 결속한 띠철근의 정착거동 및 강도를 파악하기 위해 콘크리트 압축강도, 클립형 연결장치의 묻힘길이, 설치 위치를 주요 변수로 28개 인발 실험체를 제작하여 실험하였다. 실험결과, 정착강도는 콘크리트 압축강도, 띠철근 직경, 클립의 묻힘길이, 설치 위치에 관계없이 클립형 연결장치로 결속하는 경우, 표준 갈고리 상세보다 모두 높게 나타났고 표준 갈고리 상세의 정착거동과 유사한 거동을 보여주었다. 그러므로, 90도 갈고리에 클립형 연결장치로 결속하는 상세는 표준 갈고리 상세와 대등한 정착거동 및 성능을 발휘할 수 있는 것으로 평가할 수 있다.

Enhanced salt coating on FeS2 surface with the addition of Li2O

  • Cheong, Hae-Won;Kang, Seung-Ho;Kim, Jong-Myong;Cho, Sung-Baek
    • Journal of Ceramic Processing Research
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    • 제13권spc2호
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    • pp.198-201
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    • 2012
  • The electrolytes in thermal batteries are nonconductive solids at ambient temperature, which prevent the self-discharge and corrosion. To meet severe environmental requirements and guarantee acceptable handling yields, all the pellets in cells should have adequate strength, especially for the cathodes due to their poor binding properties among FeS2 particles. By modifying the surface microstructure of FeS2 through molten-salt heat treatment, the inter-particle binding strength is greatly increased, resulting in the enhanced pellet strength and yield. The addition of Li2O also promoted the soft salt coating coverage of hard FeS2 particles, which can be explained by the enhanced wettability of the molten salt.

Cyclic Voltammetric Investigation of Interactions between Bisnitroaromatic Compounds and ds.DNA

  • Janjua, Naveed Kausar;Akhter, Zareen;Jabeen, Fariya;Iftikhar, Bushra
    • 대한화학회지
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    • 제58권2호
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    • pp.153-159
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    • 2014
  • Herein, the cyclic voltammetric (CV) investigations of structurally similar bisnitrocompounds (N3, N4, N5, N6, having different-$CH_2$-spacer length) is presented. CV study offered interesting interactional possibilities of bisnitrocompounds with chicken blood ds.DNA at physiological pH 4.7 and human body temperature, 310 K. The results indicated strong interaction by these symmetric molecules with ds.DNA and strength of binding is found to depend on length of $CH_2$ spacer group in their molecular structure. Thermodynamics derived from electrochemical binding parameters also favored the irreversible interactions. Moreover, threading intercalation mode of binding is suggested based on thermodynamic and kinetic binding parameters extracted from CV studies.

Substituent Effects on the Binding Energies of Benzyl Alcohol-H2O Clusters: Ab initio Study

  • Ahn, Doo-Sik;Lee, Sung-Yul
    • Bulletin of the Korean Chemical Society
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    • 제23권2호
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    • pp.262-266
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    • 2002
  • Computations are presented for the ortho- and para-substituted benzyl alcohol-$H_2O$ clusters. A variety of conformers are predicted, and their relative energies are compared. Binding energies of the clusters are computed, and detailed analysis is presented on the effects of substitution on the strength of the hydrogen bond in the clusters. F- and $NH_2-$ substituted clusters are studied to analyze the effects of electron-withdrawing and electron-pushing groups. In para-substituted clusters, the inductive effects are dominant, affecting the binding energies in opposite way depending on whether the hydroxyl group is proton-donating or -accepting. For ortho-substituted clusters, more direct involvement of the substituting group and the resulting geometry change of the hydrogen bond should be invoked to elucidate complicated pattern of the binding energy of the clusters.

Relative strength of 5' splice-site strength defines functions of SRSF2 and SRSF6 in alternative splicing of Bcl-x pre-mRNA

  • Choi, Namjeong;Liu, Yongchao;Oh, Jagyeong;Ha, Jiyeon;Ghigna, Claudia;Zheng, Xuexiu;Shen, Haihong
    • BMB Reports
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    • 제54권3호
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    • pp.176-181
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    • 2021
  • Bcl-x, a member of the Bcl-2 family, plays a key role in apoptosis. Alternative splicing of Bcl-x pre-mRNA through alternative 5' splice-site selection produces an anti-apoptotic mRNA isoform that includes exon 2b and a pro-apoptotic Bcl-x mRNA isoform that excludes exon 2b. Here we used Bcl-x minigene and identified SRSF2 and SRSF6 as two regulatory factors of 5' splice-site selection of Bcl-x pre-mRNA. We selected binding clusters closer to 5' splice-sites from multiple potential binding sites of SRSF2 and SRSF6 to perform loss of functions analysis through site-directed mutagenesis. Our results demonstrated that these mutations did not abolish regulatory functions of SRSF2 or SRSF6, indicating that a single binding motif or a cluster was not a functional target of these proteins in Bcl-x pre-mRNA splicing. Random deletion mutagenesis did not disrupt the role of SRSF2 and SRSF6. Importantly, mutagenesis of 5' splice-site to a conserved or a weaker score demonstrated that the weaker strength of the target 5' splice-site or higher strength of the other 5' splice-site strength limited the role of SRSF2 and SRSF6 in 5' splice-site activation.