흑마늘을 이용하여 와인을 제조해보고 숙성 칩의 종류에 따른 향기 성분의 변화를 조사하였다. 흑마늘 와인을 제조한 후, 저장 조건으로 미국산 칩과 프랑스산 칩을 이용하여 3개월간 10oC에서 숙성하여 흑마늘 와인을 완성하였다. 향기 성분을 분석을 위하여 GC/MS를 이용하였다. 미국산 칩을 사용한 경우 주요 향기성분으로 2-methyl-1- propanol, 3-methyl-1-butanol, 2-methyl-1-butanol, acetaldehyde, butanoic acid, octanoic acid, 1,1-diethoxyethane, allyl methyl sulfide가 검출되었다. 프랑스산 칩을 사용한 경우 에는 1-propanol, 2-methyl-1-propanol, 3-methyl-1-butanol, acetaldehyde, acetic acid, propanoic acid, butanoic acid, octanoic acid, 2-heptanone, 1,1-diethoxyethane, N-amino32- hydroxypropanamidate, n-butylamine, chloroacetonitrile, allyl methyl sulfide가 주요성분으로 검출되었다. 미국산 칩을 사용한 와인에서 과일향성분인 n-propylacetate, butanoic acid, octanoic acid가 상대적으로 높게 검출되었고, 흑마늘에서 기인된 allyl methyl sulfide는 미국산 칩을 사용한 경우에서만 검출이 되었다. Acetic acid는 프랑스산 칩을이 용한 경우에만 검출되었다.

This study manufactured a CIG-based composite coating layer utilizing a new warm spray process, and amixed powder of Cu-20at.%Ga and Cu-20at.%In. In order to obtain the mixed powder with desired composition, theCu-20at.%Ga and Cu-20at.%In powders were mixed with a 7:1 ratio. The mixed powder had an average particle size of35.4 µm. Through the utilization of a warm spray process, a CIG-based composite coating layer of 180 µm thicknesscould be manufactured on a pure Al matrix. To analyze the microstructure and phase, the warm sprayed coating layerunderwent XRD, SEM/EDS and EMPA analyses. In addition, to improve the physical properties of the coating layer, anannealing heat treatment was conducted at temperatures of 200℃, 400℃ and 600℃ for 1 hour each. The microstructureanalysis identified α-Cu, Cu4In and Cu3Ga phases in the early mixed powder, while Cu4In disappeared, and additionalCu9In4 and Cu9Ga4 phases were identified in the warm sprayed coating layer. Porosity after annealing heat treatmentreduced from 0.75% (warm sprayed coating layer) to 0.6% (after 600℃/1 hr. heat treatment), and hardness reducedfrom 288 Hv to 190 Hv. No significant phase changes were found after annealing heat treatment.

Black fermented garlic includes many pharmacological components. Therefore, in this study, black fermented garlic wine was manufactured and its flavor compounds were investigated difference of aging chips from America and France. The fermented wine was stored at 10oC for 6 months. GC/MS was used for the flavor components analysis. Wine using American chip contained 2-methyl-1-propanol, 3-methyl-1-butanol, 2-methyl-1- butanol, acetaldehyde, butanoic acid, octanoic acid, 1,1-diethoxyethane, and allyl methyl sulfide. 1-Propanol, 2- methyl-1-propanol, 3-methyl-1-butanol, acetaldehyde, acetic acid, propanoic acid, butanoic acid, octanoic acid, 2- heptanone, 1,1-diethoxyethane, N-amino32-hydroxypropanamidate, n-butylamine, and chloroacetonitrile were detected as major flavor compounds using France chips. Especially, the wine contained allyl methyl sulfide that was resulted from black fermented garlic. There were more compounds that smell like fruit in the wine using American chips relatively. And allyl methyl sulfide was detected only in the wine using America chips. Whereas acetic acid was detected only in the wine using France chips

The object of this paper is to evaluate a working environment noise at manufacturing process of metal material products. To accomplish the object; An employee noise exposure criteria, which is mounted in big size enterprise, was investigated. The noise at the 460 points of the manufacturing process machine in the 38 processes of the 1 factories were measured. The database of the noise was built from the measurement data. The major sound sources and frequency range for the manufacturing process of metal material product machine was investigated. In this study, we compare working environment noise criteria of korean with employee noise exposure criteria

Polyurethane is an elastomer polymer, which is flexible, tough and resistant. This material is widely used various fields such as automobile, aeroplane, textiles, construction industries. Currently there exists more than 1,000 manufacturing companies in Korea that are closely related to Polyurethane. In spite of a number of Polyurethane manufacturing companies, there are little attention in academia as well as industries to study the safety and manufacturing process improvement on Polyurethane. In this paper, we consider a case study for the Polyurethane manufacturer to improve productivity by using safety management and manufacturing process reengineering. After careful analysis, we derive three enhancements to increasing the safety and productivity for the target company. Especially, we achieve about 16% productivity improvement in roller manufacturing process by replacing manual stirring job with automated mixing machine.

The application of sublimation transfer printing is widely expanded in the textile industry according to the growth of IT technology. Therefore, its improvement of manufacturing process is strongly needed. In this paper, new manufacturing process of sublimation transfer printing by combining conveyor system and hot plate pressing is developed. New process has improved quality and productivity of sublimation transfer printing. It is shown that the new process has better indices than existing process in the required time, man power, production output and sales. New process is able to cope with mass production and various manufacturing condition actively.

The object of this paper is to examine the noise generating mechanism at manufacturing process of metal material products. To accomplish the object; A noise generating mechanism of high noise machine, which is mounted in the small and medium size enterprise, was investigated. The measurement method of the noise for the machine by manufacturers were investigated. The noise at the 250 points of the manufacturing process machine in the 40 processes of the 3 factories, 3 business fields was measured. The database of the noise was built from the measurement data. The major sound sources and frequency range for the manufacturing process of metal material product machine was investigated.

HCFFT (Hybrid Concrete Filled FRP Tube) is consisted of pultruded FRP unit module, filament winding FRP which is in the outside of mandrel composed of circular shaped assembly of pultruded FRP unit modules, and concrete which is casted inside of the circular tube shaped hybrid FRP pile. The pultruded FRP can increase the flexural load carrying capacity and the filament winding FRP can provide the confinement for the concrete filled inside. The axial and flexural load carrying capacities of small diameter HCFFT piles were evaluated through the experimental and theoretical studies. In this study, we suggest the cross-section and manufacturing process of large diameter HCFFT pile which is expected to improve the quality and productibility of large diameter HCFFP pile.

본 연구는 여러 해조류 소재 중에서 국내 생산량이 많고 연소가 뛰어나 수율이 높은 해초액 화합물을 대량생산 실용화가 가능한 것을 목표로 하며, 해조류인 미역 다시마 톳 기타 김 등을 이용하는 것으로서 주로 원료확보는 폐자원 해조류 등을 이용하여 고온에서 Poly step trap식 건류 공정 적용인 탄화공정을 수반함으로서 생성된 해초 액을 개발하는 연구다. 이를 분리 정제하는 기술적 공정을 개발하고 나아가 시제품을 개발하여 농업, 식품, 비료, 의약품 대체화를 추진함과 동시에 제일 문제시 되고 있는 식품 첨가제를 해결함으로서 고 부가치성 창출과 바이오 생물약제 원료로 개발하고자 하였다. 그래서 해초 액을 추출 분리 및 정제연구를 실시하여 화합물 분석실험을 추진하였다. 그리고 목초액과 성분비교 우위성 입증실험을 성분비교실험을 통해서 비교 검증실험을 추진하였다.

High luminance LED fluorescent light is replaced by halogen light in recent light parts. The housing cover of LED fluorescent light is used many several materials. Though deformity character has less value, polycarbonate cover has cheap, high strength and it is used general purpose. This study is several purposes. 1. No entering foreign matters during continuous extrusion manufacturing process in cutting process, 2. No deformity, exact cutting of pc length and finding method of cutting manufacturing process for polycarbonate cover

Manganese dioxide (MnO2) is one of the most important cathode materials used in both aqueous and non-aqueous batteries. The MnO2 polymorph that is used for lithium primary batteries is synthesized either by electrolytic (EMD-MnO2) or chemical methods (CMD-MnO2). Commonly, electrolytic manganese dioxide (EMD) is used as a cathode mixture material for dry-cell batteries, such as a alkaline batteries, zinc-carbon batteries, rechargeable alkaline batteries, etc. The characteristics of lithium/manganese-dioxide primary cells fabricated with EMD-MnO2 powders as cathode were compared as a function of the parameters of a manufacturing process. The flexible primary cells were prepared with EMD-MnO2, active carbon, and poly vinylidene fluoride (PVDF) binder (10 wt.%) coated on an Al foil substrate. A cathode sheet with micro-porous showed a higher discharge capacity than a cathode sheet compacted by a press process. As the amount of EMD-MnO2 increased, the electrical conductivity decreased and the electrical capacity increased. The cell subjected to heat-treatment at 200˚C for 1 hr showed a high discharge capacity. The flexible primary cell made using the optimum conditions showed a capacity and an average voltage of 220 mAh/g and 2.8 V, respectively, at 437.5μA.

The present study investigated the concentration of gaseous odor emitted from paint manufacturing facilities and the cases of improvement for odor emission reduction. It was found that the companies located in odor management district observed the odor emission standard more than the companies located in other local industrial complex. We ascribed the reason to the continuous crackdown by local government and voluntary efforts of each companies. Finally, we described the improvement cases of process for odor emission reduction.

두부의 주요 가공과정 중의 일반세균, 저온세균, 포자형성세균의 microflora에 대한 정량 및 정성 분석을 통하여 가공 공정 별 미생물 오염 원인을 규명하고자 하였다. 일반세균은 원료 콩에 4.75 log CFU/g 존재하였으나 두유제조 공정에서 가열에 의해 3.55 log CFU/g으로 감소하였고 가열 후 포장두부에서는 2.53 log CFU/g 존재하였다. 저온세균은 원료 콩에 3.55 log CFU/g 존재하였으나 두유제조 공정에서 가열에 의해 0.78 log CFU/g으로 감소하였고 포장 두부의 가열에 의해 사멸되어 완제품에는 검출되지 않았다. 포자형성세균은 원료 콩에 1.75 log CFU/g 존재하였고 제조 공정 중 외부 오염에 의해 혼입된 후 완제품 저장 시 0.58 log CFU/g 수준으로 검출되었다. 두부의 제조 과정 중 원료 콩으로부터 최종 제품까지 총 29속 70종의 세균이 분리 동정되었다. 원료 콩, 두유, 성형벨트, 숨물 plate, 절단용 칼날, 열탕 전 포장 두부, 열탕 후 포장 두부에 존재하는 주요 미생물은 각각 Bacillus spp., Lysinibacillus bronitoleran, Acinetobacter spp., Bacillus spp., Acinetobacter spp., Acinetobacter spp., Staphylococcus spp.로 확인되었다.

This essay talks about research of robust design for quality improvement of production procedure of Wet Etchant. It suggested the optimum design method in consideration of specific capability value that is the way to maximize the quality of product in the production system by using Daguchi parameter design method while finding factors affecting product quality with analysis of production system of product A from producer D. Also, it set long term of 6months as noise factor and let it to be the robust design that can find the optimum condition of control factor that is dull to the changes of each month, that is the change in noise factor. The control factor which affects the product quality is decided as combination method, temperature of raw material, combination time and as there are too many possibilities for combination methods, we performed 4 methods first based on previous research data then derived three ways with product that passed SPEC and set as the factor. As a result of application of optimum production procedure suggested in this essay to the actual production process with its standardization, there was a effect of drop of more than 10particles in comparison to the particle number of previous product and also it brought the effect that resulted the stable number of particle of under 30 that is what the client company suggested.

The purpose of this study is to minimize the PCH(Propylene CHlorohydrins) as a by-product in HPMC(HydroxyPropyl MethylCellulose) manufacturing process. HPMC is made of cellulose which is natural high polymer. And HPMC is applicable to several industrial areas. Especially it can be used in food industry as an effective additive. PCH is the by-product which is generated in chemical reaction in HPMC manufacturing process. So it is essential to eliminate PCH for the improvement of product quality. Therefore we have studied to minimize the amount of PCH. It is expected that the application of HPMC could be enlarged as the result of this study.

The purpose of this study is to improve for the inhibition of the generating the PCH(Propylene Chlorohydrins) in HPMC(Hydroxypropylmethyl Cellulose) manufacturing process. HPMC is made of cellulose which is natural high polymer. And HPMC is applicable to several industrial areas. Especially it can be used in food industrial as an effective additive. PCH is the by-product which is generated in chemical reaction in HPMC manufacturing process. So it is essential to eliminate PCH for the improvement of product quality. Therefore we have studied to minimize the amount of PCH. It is expected that the application of HPMC could be enlarged as the result of this study.

Recently the competition of market is getting more and more severe as the block of economic market has been broken due to the free trade of the world. In the mean time, the companies are experiencing more hardship than before because of the difficulties in employing workers, increases of salray and fixed cost of production and higher demand on the product quality from the consumer. Therefore various ways are needed for the resolutions of the production technology and the marketing. Production information system is one way which can bring a innovative advance of the company. In this study, we will examine the design methodology of the POP system for its efficient implementation as a production information system in the automobile parts manufacturing process. For this, we are to suggest the strategy of system implementation as we examine the process analysis, its redesign and coding for construction and testing and performing for its implementation.

경제적 잠재성이 큰 삼 종자의 식품소재로서의 활용을 모색하고자 삼 종자의 일반성분을 측정하였고 삼 종자 첨가 압출성형펠릿의 호화양상을 분석하기 위하여 페이스트 점도를 측정하였다. 또한 삼 종자 후레이크의 체적밀도, 색도, 압착강도, 수분용해지수와 수분흡착지수, 조직감 유지시간(bowl life) 등의 품질특성을 조사하였다. 압출성형 공정조건은 배럴온도 90, 100, 110oC, 수분함량 35%이었다. 삼 종자의 수분, 조단백질, 조지방, 조회분함량은 각각 5.67±0.02, 25.93±0.16, 28.21±0.56, 7.70±0.08%이었다. 압출성형 펠릿의 페이스트 점도 측정결과 삼 종자 펠릿의 제조에 적합한 압출성형 배럴온도는 100-110oC인 것으로 판단되었다. 삼 종자 후레이크의 체적밀도는 0.24-0.43 g/mL 범위로 배럴온도가 증가함에 따라 감소하는 경향을 나타내었다. 명도와 압착강도는 삼 종자 첨가량이 증가함에 따라 크게 감소하는 경향을 나타내었다. 배럴온도가 90oC에서 110oC로 증가함에 따라 수분용해지수는 감소하는 경향을 나타내었고 수분흡착지수는 증가하는 경향을 나타내었다. 조직감 유지시간은 5.8-15.5분 범위로 삼 종자 첨가량의 증가에 따라 감소하였다. 관능검사 결과 전체적인 기호도는 삼 종자 첨가량 20%일 때 가장 높은 값을 나타내었다.

Quality design methodologies have received constituent attention from a number of researchers and practitioners for more than twenty years. Specially, the quality design for drug products must be carefully considered because of the hazards involved in the

쇽옵서버 피스톤로드(shock absorber piston rod)는 자동차의 충격과 진동의 흡수에 작용하는 자동차 현가장치(sus-pension equipment)부품의 일종이다. 피스톤로드는 자동차 충격흡수에 매우 밀접한 영향을 주기 때문에 제조에 있어서 고도의 정밀도와 표면 매끄러움이 요구된다. 피스톤로드의 제조공정은 선삭, 홈가공, 밀링, 건조 등 여러 공정으로 구성되는데, 여기서 품질불량에 가장 크게 영향을 주는 공정은 선삭공정(lathing