• Title/Summary/Keyword: FSC

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INTERVIEW - "한국 인쇄업계의 친환경 발전일조할 터" - 얀 시퍼 -

  • Kim, Sang-Ho
    • 프린팅코리아
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    • v.9 no.2
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    • pp.78-79
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    • 2010
  • 네덜란드 로테르담에 본사를 두고 있는 피터슨 컨트롤유니온 월드그룹의 한국법인인 (주)컨트롤유니온써티피케이숀코리아는 전세계 50여 개국에 걸친 네트웍을 구축하고 식품이나 원료 등 다양한 제품에 대한 품질 검증과 인증 및 물류 서비스를 제공하고 있는 글로벌기업이다. 컨트롤유니온써티피케이숀코리아의 얀 시퍼 대표이사는 자사의 주요 업무의 하나인 FSC인증 서비스를 한국에 제공하고 있으며 이 인증은 인쇄 및 출판업계와 깊은 관련이 있다고 말한다. 친환경시대가 인쇄산업에 대한 갖는 중요성과 FSC인증제도, 앞으로의 한국에서 전개할 사업 계획에 대해 들어 보았다.

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Development of Fly Ash/slag Cement Using Alkali-activated Reaction(2) - Reaction products and microstructure - (알칼리 활성반응을 이용한 플라이 애쉬/슬래그 시멘트 개발(2) - 반응생성물과 미세구조 -)

  • Park, Sang-Sook;Kang, Hwa-Young;Han, Kwan-Su
    • Journal of Korean Society of Environmental Engineers
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    • v.29 no.7
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    • pp.810-819
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    • 2007
  • Investigation of alkali activation of fly ash and blast furnace slag was carried out using waterglass and sodium hydroxide. XRD, FTIR, $^{29}Si$ and $^{27}Al$ NMR, TGA and SEM were used to observed the reaction products and microstructure of the fly ash/slag cement (FSC) pastes. The reaction products were amorphous or low-ordered calcium silicate hydrate and aluminosilicate gel produced from alkali activation of blast furnace slag and fly ash, respectively. On the basis of this investigation, waterglass solution with a modulus(Ms) of 1.0 and 1.2 is recommended for alkali activation of fly ash and blast furnace slag. Morphology of FSC pastes alkali-activated with Ms of 1.0 and 1.2 shows a more solid and continuous matrix due to restructuring of gel-like reaction products from alkali-activated fly ash and blast furnace slag together with another hydrolysis product(i.e., silica gel) from water glass.

Development of Criteria and Indicators for Forest Management Certification in Korea (한국형 산림경영인증 기준과 지표의 개발)

  • Shin, Hye-Jin;Kim, Eui-Gyeong;Yoo, Byoung-Il;Seo, Jeong-Won
    • Journal of Korean Society of Forest Science
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    • v.99 no.1
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    • pp.24-35
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    • 2010
  • This paper aims to contribute to the introduction of forest certification (a private enterprise) in Korea by developing C&I with consideration of the Korean forestry situation. For this study, 6 attributes for establishing certification system at FMU level was applied. To weigh relative importance of international organization's assortment and indicators, AHP survey was conducted to each experts in political, ecological, social, and economic field. By the experts attending FSC's auditing process, indicators adopted through AHP survey were inspected again for the realistic application in the fields. In this process, the typical environment of Korean forestry in real aspect and problems in FSC system were reaffirmed. Therefore, 7 criteria, 27 indicators and 92 checklists were finally developed for the construction of forest certification based on the results of AHP surveys and from investigation on the realistic situation in the fields.

Risk factors limiting first service conception rate in dairy cows and their economic impact

  • Kim, Ill Hwa;Jeong, Jae Kwan
    • Asian-Australasian Journal of Animal Sciences
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    • v.32 no.4
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    • pp.519-526
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    • 2019
  • Objective: We determined the risk factors limiting first service conception (FSC) rate in dairy cows and their economic impact. Methods: Data were collected from 790 lactations regarding cow parity, peri- and postpartum disorders, body condition score (BCS), reproductive performance, and expenses associated with reproductive management (treatment, culling, and others). Initially, we identified the risk factors limiting FSC rate in dairy cows. Various biological and environmental factors, such as herd, cow parity, BCS at 1 month postpartum and first artificial insemination (AI), resumption of cyclicity within 1 month of calving, year, AI season, insemination at detected estrus or timed AI, peri- and postpartum disorders, and calving to first AI interval, were evaluated. Next, we evaluated the economic impact of the success or failure of FSC by comparing the expense associated with reproductive management until conception between cows that did or did not conceive at their first service. Results: Cows with BCS <3.0 had a lower probability of conceiving at first insemination (odds ratio [OR] = 0.64, p<0.05) than cows with $BCS{\geq}3.0$. Cows inseminated during summer were less likely to conceive (OR = 0.44, p<0.001) than cows inseminated during spring. Cows with peri- or postpartum disorders were less likely to conceive (OR = 0.55, p<0.001) than cows without disorders. Survival curves generated using MedCalc showed an 81 day extension in the mean interval between calving and conception in cows that failed to conceive over those that did conceive at first insemination. Cows failing conceive required additional expenditure on reproductive treatment ($55.40) and other management ($567.00) than cows that conceived at first insemination. Conclusion: Lower BCS, hot weather at first insemination, and peri- and postpartum disorders are risk factors limiting FSC, which result in an economic loss of $622.40 per dairy cow.

Analysis of Chemical Constitutions of MTA and 3 Portland Cements (EDS (Energy Dispersive Spectrometry)를 이용한 Mineral Trioxide Aggregate와 3종의 포틀랜드 시멘트의 성분비교에 관한 연구)

  • Chang, Seok-Woo;Bae, Kwang-Shik
    • Journal of Dental Rehabilitation and Applied Science
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    • v.23 no.1
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    • pp.79-84
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    • 2007
  • Mineral Trioxide Aggregate(MTA) has been used in Endodontic treatment successfully for more than 10 years. But the high cost of MTA limits its use in endodontics in Korea. Recently many studies have been done to compare MTA and Portland cements. To investigate the chemical constitutions of MTA (Proroot MTA, Tulsa Dental), Gray Portland cement (Lafarge Halla cement), White Portland cement(Union corp), and fast setting cement (SSangyong cement), we performed SEM(scanning electron microscope)(S4700, Hitachi) examination and EDS(Energy dispersive spectrometry)(emax, Horiba) analysis. SEM examination and EDS analysis were committed to and performed in SNU DRI (Seoul National University Dental Research Institute). We found that particles of MTA were relatively round, uniform in size, and compactly packed compared to Portland cements. Chemical constitutions of MTA, GPC, WPC and FSC were similar. It was shown that MTA contains much BiO2 . MTA and WPC showed less heavy metals such as Fe and Mg compared to GPC and FSC. FSC showed remarkably high aluminum content.

Fault Analysis of AC/DC Converter for ITER Superconducting Magnet (ITER 초전도자석 전원공급장치의 고장해석)

  • Park, H.;Lee, S.;Jo, S.;Chung, I.;Hwang, K.;Liu, H.;Oh, J.S.;Choi, J.;Suh, J.H.
    • Proceedings of the KIPE Conference
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    • 2012.11a
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    • pp.243-244
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    • 2012
  • ITER 초전도자석 전원공급장치에서 고장의 종류는 단락, 단락 외 컨버터 내부고장 그리고 여러 외부요인에 의한 고장 크게 세 가지로 구분된다. 여기서 단락 외 컨버터 내부고장과 외부요인에 의한 고장은 보호시스템 및 장치의 동작으로 인해 피해가 축소된다. 하지만 단락시에는 보호시스템이 동작하더라도 단락전류가 매우 커 큰 피해를 줄 수 있다. 또한 ITER 초전도자석 전원공급장치는 운전 중 발생 가능한 부하의 단락으로부터 초전도자석 및 다른 장치 등을 보호하기 위하여 ITER에서 요구하고 있는 FSC(Fault Suppression Capability: 고장 억제 능력) 조건을 만족해야 한다. FSC 조건에서 전원공급장치는 출력에서 300 kA의 단락전류가 흐를 경우에도 80 ms(50 Hz, 4주기)동안 전기적 고장 없이 견뎌야 한다. 본 논문에서는 전원공급장치에서 발생될 수 있는 주요 단락 항목을 소개하고, 최악의 조건에서 단락전류에 의한 전원공급장치의 고장해석을 통해 FSC 요건을 만족하는 소자 선정 및 구조설계의 적합성을 검증한다.

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The enzymatic modification and functionalities of filefish skin collagen (말쥐치피 콜라겐의 효소적 수식 및 기능성)

  • Kim, Se-Kwon;Kwak, Dong-Chae
    • Applied Biological Chemistry
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    • v.34 no.3
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    • pp.265-272
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    • 1991
  • In order to utilize fish skin effectively, the acid-soluble collagen was extracted from the skin of filefish, Novoden modestrus, and the filefish skin collagen(FSG) was modified by papain-catalyzed incorporation of L-leucine alkyl ester(Leu-OCn). The functional properties of an enzymatically modified collagen were measured. The $FSC-Leu-OC_8$ showed very good emulsifiability and foamability and was suitable for use as a low-fat content proteinaceous surfactant.

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Fast Spectrum Sensing with Coordinate System in Cognitive Radio Networks

  • Lee, Wilaiporn;Srisomboon, Kanabadee;Prayote, Akara
    • ETRI Journal
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    • v.37 no.3
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    • pp.491-501
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    • 2015
  • Spectrum sensing is an elementary function in cognitive radio designed to monitor the existence of a primary user (PU). To achieve a high rate of detection, most techniques rely on knowledge of prior spectrum patterns, with a trade-off between high computational complexity and long sensing time. On the other hand, blind techniques ignore pattern matching processes to reduce processing time, but their accuracy degrades greatly at low signal-to-noise ratios. To achieve both a high rate of detection and short sensing time, we propose fast spectrum sensing with coordinate system (FSC) - a novel technique that decomposes a spectrum with high complexity into a new coordinate system of salient features and that uses these features in its PU detection process. Not only is the space of a buffer that is used to store information about a PU reduced, but also the sensing process is fast. The performance of FSC is evaluated according to its accuracy and sensing time against six other well-known conventional techniques through a wireless microphone signal based on the IEEE 802.22 standard. FSC gives the best performance overall.

The Change of Mu Rhythm according to Familiarity of Observation Stimulus in Stroke Patients (관찰 자극의 친숙도에 따른 뇌졸중 환자의 뮤리듬 변화)

  • Yun, Tae-Won;Lee, Moon-Kyu
    • PNF and Movement
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    • v.9 no.4
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    • pp.33-40
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    • 2011
  • Purpose : The aims of this study was to identify changes mu rhythm according to familiarity with a stimulus in people with stroke. Methods : Seventeen right-handed participants were asked to observe 2 different stimulus; a non-familiarity stimulus condition (NFSC), and a familiarity stimulus condition (FSC). Electroencephalogram (EEG) signals from electrodes on the participant's scalp were recorded during action observation. The activation of the mirror neuron system was compaired between FSC and NFSC by a paired t-test. An independent t-test was used to compare the difference between right and left hemispheres for the activation of the mirror neuron system during action observation of performing a task with the right hand. Results : The result of paired t-test showed no significantly difference between NFSC and FSC in the activation of the mirror neuron system. The Result of independent t-test also showed no significantly difference in the activation of mirror neuron system between the right and left hemispheres. Conclusion : The familiarity with a stimulus had no signigicant effect on the activation of the mirror neuron system according to the familiarity and in either the right or left hemispheres in people with chronic stroke.