• KOREAN POULTRY JOURNAL
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• v.38 no.8 s.442
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• pp.74-75
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• 2006

노동부와 산업안전관리공단에서는 매년 7월 첫째주를 ‘산업안전보건강조주간’이라 지정하여 산업재해예방에 공로가 큰 산업안전보건 관계자들의 노고를 치하하고 산재예방에 관한 기술과 정보를 교류하는 행사를 거행한다. 본고는 지난 3일부터 개최된 ‘제39회 산업안전보건강조주간행사’에서 올해의 산재예방유공 정부포상자로 동탑산업훈장을 수상한 (주)제일바이오 심광경 대표이사를 만나 수상소감을 들어보았다.

• Feed Journal
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• v.5 no.2 s.42
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• pp.39-43
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• 2007

• Venture DIGEST
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• s.65
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• pp.14-15
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• 2005

바이오스페이스 차기철 대표에게 올해는 여러모로 특별한 해이다. 닭띠생인 그가 4번째로 맞는 닭의 해이자, 회사 바이오스페이스가 올해로 10주년을 맞는 해이기 때문이다. 하루하루는 그냥 살아지는 것 같지만, 1년, 2년, 5년이 쌓이고 보면 우리는 하루하루 역사를 만들고 있지 않던가. 차대표와 바이오스페이스도 지난 10년간 쌓아온 역사를 뒤로 하고 다시 새로운 터닝포인트를 맞이하고 있다. 체지방 측정기 한우물을 파며 세계제일을 이루었듯, 이제 바이오스페이스는 불필요한 군살을 제거하고, 아주 가벼운 몸과 마음으로 또다시 시작될 새로운 10년을 준비하고 있다.

• 동물약계
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• no.106
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• pp.4-7
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• 2006

동물약사감시 행정처분 결과 홍보/동물용의약품등 취급규칙 하위 규정 작업단 규정/양식어류용 약제 개발을 위한 협의회 개최/검역원 동물약품 관련 세미나 참석/품질관리우수업체 간담회 개최/2/4분기 가축전염병중앙예찰협의회 참석/VIV CHINA 2006 중소기업청 지원사업 선정/수출촉진협의회 개최/VIV ASIA 2007 참가업체 수요조사 실시/가축전염병 병원체 해외분양 관련 협의회 개최/동물의약연구회 창립 및 학술세미나 개최/2007년도 병역지정업체 선정 신청/(주)제일바이오 산업재해 동탑산업훈장 수상/협회 직원 인사/수해지역 방역용 동물약품 지원/검역원 방역약품 지원현황/소독약품 사용방법 개선시험 추진 현황

• Proceedings of the Optical Society of Korea Conference
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• 2003.02a
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• pp.276-277
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• 2003

전체 반도체 소자 제조 공정의 40 ％를 차지하고 있는 리소그래피 기술은 기억 소자뿐만 아니라 마이크로 프로세서, ASIC 등의 실리콘 소자와 군사 및 통신에 많이 사용되고 있는 화합물 반도체를 만드는 데도 쓰이고 있고, 요즈음은 DRAM 의 리소그래피 기술들을 LCD 등의 평판 표시 장치, 디스크 헤드, 프린터 헤드 및 MEMS(Micro-Electro-Mechanical System), 나노 바이오 칩 등의 제작에 응용하여 쓰고 있다. 리소그래피 기술은 생산 원가 면에서 제일 큰 비중을 차지하고 있을 뿐만 아니라 집적소자의 초고집적화 및 초미세화를 선도하는 기술이다. (중략)

• KOREAN POULTRY JOURNAL
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• v.49 no.8
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• pp.192-195
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• 2017

CJ제일제당 바이오 사업부문은 지난 6월 12일 북경(China World Hotel)에서 제 3회 AAFAN(Amino Acid Forum in Animal Nutrition)을 개최하였다. 이번 포럼은 '사료의 조단백질 저감을 통한 축산의 발전 및 환경개선'이라는 주제로 진행되었다. AFFAN은 CJ가 단독으로 개최하는 국제 학회이며, 처음으로 한국이 아닌 해외에서 개최함으로서 그 명성이 더 높아지게 되었다. 이번 포럼에서는 중국을 포함한 각국의 주요 사료회사 연구개발 담당자 및 정부기관 담당자들이 100명 이상 참석하였으며, 활발한 토의를 통하여 사료의 조단백 저감에 대한 공감대를 형성하게 되었다. 본고는 본 심포지움의 주요내용을 정리한 것이다.

• Korean Chemical Engineering Research
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• v.60 no.1
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• pp.116-124
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• 2022

In this study, waste air containing ethanol and hydrogen sulfide, was treated by an integrated hybrid system composed of two alternatively-operating UV/photocatalytic reactor-process and biofilter processes of a biofilter system having two units with an improved design (R reactor) and a conventional biofilter (L reactor). Both a pressure drop (△p) per unit process of the integrated hybrid system and a microbe-population-distribution of each biofilter process were observed. The △p of the UV/photocatalytic reactor process turned out very negligible. The △p of the L reactor was observed to increase continuously to 4.0~5.0 mmH₂O (i.e., 5.0~6.25 mmH₂O/m). In case of R reactor, its △p showed the one below ca. 16~20% of the △p of the L reactor. Adopting such microbes-carrying biofilter media with high porosity as waste-tire crumb media, and the improved biofilter design, contributed to △p of this study, reduced by ca. 37~50% and 40~53%, respectively, from the reported △p of conventional biofilter packed with biofilter media of the mixture (50:50) of wood chip and wood bark. In addition, the △p of R reactor in this study, reduced by ca. 80% from the reported △p of conventional biofilter packed with biofilter media of the mixture (75:25) of scoria with high porosity and compost, was mainly attributed to adopting the improved biofilter design. On the other hand, in case of L reactor, the CFU counts in its lowest column was analyzed double as much as those in any other columns. However, in case of R reactor, its CFU counts were bigger by 50% than the one of L reactor and its microbes were evenly distributed at its higher and lower columns of R_dn reactor and R_up reactor. This phenomena was attributed to an even moisture distribution of 50~55% of R reactor at its higher and lower columns. Therefore, R reactor showed superb characteristics in terms of both △p and microbe-population-distribution, compared to L reactor.

• Journal of Korea Foresty Energy
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• v.20 no.1
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• pp.6-11
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• 2001

In order to use bast fibers of mulberry tree at a pulp source of Hanji, the bast fibers were microbiologically treated with several wood rot fungi, and the microscopic characteristics of bast fibers depending on treatment days were evaluated. By wood rot fungi, Phanerochaete chrysosporium and Trametes versicolor, the weight reduction ratio was approximately 50 percent within incubation for 20 days. occurring together with decomposition of useful fibers. However, Hwterobasidion insularis and Stereum hirsutum have completely decomposed the utmost layer of black blue colored bast fibers, and not caused the damage if fibers. Until incubation for 10 days, the cellulose content of vast fibers by Stereum hirsutum was 78.9 percent with lignin content of 7.2 percent, showing an appropriate decomposition for useful fibers. By microscopic observation, the bundled fibers were separated to single fiber within treatement days 30 by Pleurotus ostreatus, and there were no damage on the surface of fiber by treatment days 50.

• Korean Chemical Engineering Research
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• v.51 no.1
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• pp.87-92
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• 2013

Microalgae have been suggested as a promising feedstock for producing biofuel because of their potential of lipid production. In this study, a first principles ODE model for microalgae growth and neutral lipid synthesis proposed by Surisetty et al. (2010) is investigated for the purpose of maximizing the rate of microalgae growth and the amount of neutral lipid. The model has 6 states and 12 parameters and follows the assumption of Droop model which explains the growth as a two-step phenomenon; the uptake of nutrients is first occurred in the cell, and then use of intra-cellular nutrient to support cells growth. In this study, optimal input design using D-optimality criterion is performed to compute the system input profile and sensitivity analysis is also performed to determine which parameters have a negligible effect on the model predictions. Furthermore, model predictive control based on successive linearization is implemented to maximize the amount of neutral lipid contents.

• Korean Journal of Environmental Agriculture
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• v.40 no.3
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• pp.219-230
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• 2021

BACKGROUND: Biochar is a solid material converted from agricultural biomass such as crop residues and pruning branch through pyrolysis under limited oxygen supply. Biochar consists of non-degradable carbon (C) double bonds and aromatic ring that are not readily broken down by microbial degradation in the soils. Due to the recalcitrancy of C in biochar, biochar application to the soils is of help in enhancing soil carbon sequestration in arable lands that might be a strategy of agricultural sector to mitigate climate change. METHODS AND RESULTS: Data were collected from studies on the effect of biochar application on soil C content conducted in East Asian countries including China, Japan and Korea under different experimental conditions (incubation, column, pot, and field). The magnitude of soil C storage was positively correlated (p < 0.001) with biochar application rate under field conditions, reflecting accumulation of recalcitrant black C in the biochar. However, The changes in soil C contents per C input from biochar (% per t/ha) were 6.80 in field condition, and 12.58 in laboratory condition. The magnitude of increment of soil C was lower in field than in laboratory conditions due to potential loss of C through weathering of biochar under field conditions. Biochar production condition also affected soil C increment; more C increment was found with biochar produced at a high temperature (over 450℃). CONCLUSION: This review suggests that biochar application is a potential measures of C sequestration in agricultural soils. However, as the increment of soil C biochar was affected by biochar types, further studies are necessary to find better biochar types for enhanced soil C storage.