• 제목/요약/키워드: Controlling of Properties

검색결과 1,028건 처리시간 0.032초

The Role of Ca Equilibrium on the Functional Properties of Cheese: A Review

  • Lee, Mee-Ryung;Lee, Won-Jae
    • 한국축산식품학회지
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    • 제29권5호
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    • pp.545-549
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    • 2009
  • The functional properties of cheese, such as texture and melt, are known to be controlled by several important parameters. Recently, the characteristics of Ca in cheeses, especially the form of Ca (insoluble (INSOL) or soluble) and the shift in Ca equilibrium (i.e., from INSOL to soluble Ca), during aging has received a lot of attention. The INSOL form of Ca, which is present as a structural form in casein, plays a critical role in determining the functional properties of cheese during the early period of ripening (~1 mon). It seems that there is always a reduction of INSOL Ca content in cheese during ripening and there are also factors that can affect the shift in Ca equilibrium. These factors may include the composition of cheese milk, cheese manufacturing pH, acid development during aging, adopting curd-washing in various methods, pre-acidification of milk, etc. There have been many studies showing that the rheological and melting properties of cheese during ripening were significantly (p<0.05) affected by the shift in Ca equilibrium. Therefore, for cheese makers, it is now possible to predict/manage the functional properties of cheese by monitoring and controlling Ca equilibrium in cheese during aging.

고로슬래그의 분말도 신속평가 및 분말도가 시멘트 모르타르의 특성에 미치는 영향 (Rapid Evaluation Method for Blast Furnace Slag Fineness and Influence of Fineness on Properties of Cement Mortar)

  • 한천구;주은희
    • 대한건축학회논문집:구조계
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    • 제34권5호
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    • pp.13-18
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    • 2018
  • In this research, regarding the type three blast furnace slag (BS) regulated by KS F 2563 and supplied to actual ready mixed concrete plant, the fineness on specification and actually measured fineness by Blain test were compared, and by applying the hydrometer method used for early prediction of concrete strength, the feasibility of the hydrometer method for acquisition inspection of BS was analyzed. Additionally, the influence of various fineness of BS on properties of cement mortar was also assessed. According to the experimental results of this research, correlation of fineness values between specification and actually measured data were not matched. In the case of the rapid evaluation method using hydrometer, a good relation was shown between the fineness data obtained from hydrometer and Blain test. furthermore, from the cement mortar properties test, there was a good relation was obtained between fineness data from rapid evaluation method by hydrometer and cement mortar properties, while there was no clear relation between fineness data from specification and cement mortar properties. Hence, as a qulity controlling method of BS fineness, a rapid evaluation method using hydrometer is suggested as a new method.

FeCo의 결정성 및 조성 제어를 통한 자기 특성 향상 (Enhanced magnetic properties of FeCo alloys by engineering crystallinity and composition)

  • 김단비;김지원;엄누시아;박성흠;임재홍
    • 한국표면공학회:학술대회논문집
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    • 한국표면공학회 2018년도 춘계학술대회 논문집
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    • pp.32.1-32.1
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    • 2018
  • Novel soft magnetic materials can be achieved by altering material properties such as morphology, composition, crystallinity, and grain size of soft magnetic alloys. Especially, magnetic properties (i.e., saturation magnetization, coarcivity) of soft magnetics are significantly affected by grain boundaries which act as a control of magnetic domain wall movement. Thus, we herein develop a two-step electroless plating method to control morphology and grain size of FeCo films for excellent magnetic properties. Accordingly, the chemical composition to control the degree of polarization of FeCo alloys was altered by electroless deposition parameters; for example, electrolyte concentration and temperature. The grain size and crystallinity of FeCo alloys was dramatically affected by the reaction temperature because the grain growth mechanism dominantly occurs at $90^{\circ}C$ where as the neucleation only happens at $50^{\circ}C$. By simply controlling the temperature, the micron-sized FeCo grains embedded FeCo film was synthesized where the large grains allow high magnetization originated from larger magnetic domain with low corecivity and the nano-sized grains allow excellent soft magnetic properties due to the magnetic correlation length.

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증착조건 및 열처리 분위기가 CaWO4 형광체의 발광특성에 미치는 영향 (Effect of Deposition Parameters and Post-annealing on the Luminescent Properties of CaWO4 Phosphor)

  • 한상혁;정승묵;송국현;김영진
    • 한국세라믹학회지
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    • 제40권10호
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    • pp.949-953
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    • 2003
  • 청색 발광특성을 갖는 CaWO$_4$ 형광체를 rf 마그네트론 스퍼터링 방법으로 박막화를 시도하고,증착변수와 열처리 조건이 발광특성에 미치는 영향을 관찰하였다. 증착조건인 산소/아르곤 가스비, 기판온도에 따라서 박막의 구조적, 화학양론적 물성이 크게 영향을 받고 있었다. 후 열처리 공정에 의하여 발광특성의 향상을 얻을 수 있었다. 산소공공에 의한 청록색 영역의 발광도 관찰되었으며, 박막내의 산소결함이 제어되면서 청색 발광스펙트럼을 얻을 수 있었다.

White ledger 오존 탈묵의 현미경적 관찰 (Microscopic Observation of White Ledger Ozone Deinking)

  • 원종명;윤승락
    • 펄프종이기술
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    • 제32권2호
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    • pp.40-44
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    • 2000
  • A microscopic study was carried out to get the fundamental informations for the ozone deinking technology. The differential interference microscopic observation showed that ozone treatment was helpful to detach the toner ink from the surface of pulp fiber. The modifications of fiber surfaces by ozone treatment were observed with scanning electron microscope. Modification of fiber surfaces was not severe at the early stage of ozone treatment, but it increased with ozone treatment time and pulp consistency, Therefore, it would be possible to improve the properties of deinked pulp by controlling the condtion of ozone treatment.

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Chiral Separation of Non-Steroidal Inflammatory Drugs as Dual Diastereomeric Derivatives with (R)-and (S)-Phenylethylamines

  • Lee, Yoon-Suk;Paik, Man-Jeong;Kim, Kyoung-Rae
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.282.2-283
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    • 2003
  • The carboxylated acidic non-steroidal antiinflammatory drugs (NSAIDs) constitute the principal class of agents for controlling the pain and inflammation of the rheumatic diseases. It is mostly administered as a racemic mixture like most other drugs with asymmetric carbon atoms. However enantiomers of many racemic drug substances have been shown to posses different pharmacological toxicological properties. (omitted)

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Fuzzy regression using regularlization method based on Tanaka's model

  • Hong Dug-Hun;Kim Kyung-Tae
    • 한국지능시스템학회논문지
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    • 제16권4호
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    • pp.499-505
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    • 2006
  • Regularlization approach to regression can be easily found in Statistics and Information Science literature. The technique of regularlization was introduced as a way of controlling the smoothness properties of regression function. In this paper, we have presented a new method to evaluate linear and non-linear fuzzy regression model based on Tanaka's model using the idea of regularlization technique. Especially this method is a very attractive approach to model non -linear fuzzy data.

Advancements in Polymer-Filler Derived Ceramics

  • Greil, Peter
    • 한국세라믹학회지
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    • 제49권4호
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    • pp.279-286
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    • 2012
  • Microstructure tailoring of filler loaded preceramic polymer systems offers a high potential for property improvement of Si-based ceramics and composites. Advancements in manufacturing of bulk materials by controlling microstructure evolution during thermal induced polymer-ceramic transforma-tion and polymer-filler reactions will be presented. Rate controlled pyrolysis, multilayer gradient laminate design and surface modification by gas solid reaction are demonstrated to yield ceramic components of high fractional density and superior mechanical properties. Emerging fields of applications are presented.

다영상 분류를 위한 단층 적응 신경회로망의 광학적 구현 (Optical Implementation of Single-Layer Adaptive Neural Network for Multicategory Classification.)

  • 이상훈
    • 한국광학회:학술대회논문집
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    • 한국광학회 1991년도 제6회 파동 및 레이저 학술발표회 Prodeedings of 6th Conference on Waves and Lasers
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    • pp.23-28
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    • 1991
  • A single-layer neural network with 4$\times$4 input neurons and 4 output neurons is optically implemented. Holographic lenslet arrays are used for the e optical interconnection topology, a liquid crystal light valve(LCLV) is used for controlling optical interconection weights. Using a Perceptron learning rule, it classifics input patterns into 4 different categories. It is shown that the performance of the adaptive neural network depends on the learning rate, the correlation of input patterns, and the nonlinear characteristic properties of the liquid crystal light valve.

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간략화된 트롤 시스템의 퍼지제어 (Fuzzy Logic Control for a Simplified Trawl System)

  • 이춘우
    • 수산해양기술연구
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    • 제30권3호
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    • pp.189-198
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    • 1994
  • This paper describes the model of a simplified trawl system and a control method by using fuzzy algorithm in controlling the depth of trawl gear. Fuzzy logic control rules are sets of linguistic expression that are used by an experienced performer in real operation. For real time processing of the control rules, the look-up tables are used. Computer simulation results indicate that the proposed fuzzy controller shows fast response with minimum steady-state error and robustness properties to the simulated disturbance.

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