Sausage의 品質保存에 미치는 r-線 照射의 影響

權重浩,尹衡植 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1984 慶北大農學誌 Vol.2 No.-

Effect of gamma irradiation on the shelf-life of commercial Sausage and its quality were investigated during 8 weeks storage at 30℃ following 3 to 8 kGy irradiation. Total baectrial count of unirradiated group was proliferated from 7.9X10^(3) per gram of sample to 10^(6) after 4 weeks storage, but that of irradiated group was propagated to same level after 5 to 6 weeks storage and the growth of coliform group was shown to be negative. The freshness of stored sausage was better in irradiated group than unirradiated one and the changes in components concerned with the quality of sausage was almost same between unirradiated and irradiated groups. Textural parameters of sausage after 4 weeks storage were not remarkably changed according to irradiation dose, and discoloration of irradiated sample at high dose was recognized by the mechanical measurement.

초음파 펄스에코 데이터 기반 3차원 시각화 방법론

권정현,장홍래,성제중,안형근,장순재,송문호 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

The nondestructive testing using ultrasonic pulse-echo data is an effective test methodology esperially for metal structure. Typically, the ultrasonic pulse-echo data is processed and the results are shown in A-scan, B-scan or C-scan formats. Upon viewing B-scan and C-scan data the viewer is able to identify the location of faults as well as their rough dimension. In this paper, we evaluate the applicability of various 3-D visualization methods frequently used in medical imaging, namely, surface rendering (SR), volume rendering (VR) and maximum intensity projection (MIP), for nondestructive testing purposes. Such 3-D visualization of ultrasonic pulse-echo data enables easier identification of the location and dimension of faults more accurately.

차세대 무선 통신 시스템을 위한 안테나 신기술

김형락,권세웅,황광선,윤영중 延世大學校 電波通信共同硏究所 2002 電波通信論文誌 Vol.6 No.1

차세대 통신 시스템에서 공통적으로 요구하는 소형화, 광대역화, 집적화추세에 따라 RF소자는 광대역화, 소형화, 집적화를 향해 발전하고 있으며 안테나 기술도 현재 추세에 발맞추어 소형화, 능동집적화, 광대역화를 통하여 개발 방향을 모색하고 있다. 본고에서는 현재 추세인 소형 안테나, 능동 안테나와 더불어 최근 관심이 집중되고 있는 임펄스 통신에 이용될 수 있는 초광대역 안테나 기술에 대해 소개한다. The technical trends of the next generation wireless communication are miniaturization, broad-band operation, and integration. Thus, in accordance with this trend, RF devices and components are being developed in such way, and same with the antenna. In this paper, technology of small antenna, active antenna, and ultra wideband antenna, which can be applied to impulse communication system, are introduced.

栽培中 Tomato 果實의 窒酸鹽 및 亞窒酸鹽과 Ascorbic acid의 含量變化

尹衡植,申大休,崔載春,權重浩 慶北大學校 1982 論文集 Vol.33 No.-

This experiment was carried cut to investigate the relationship between nitrite and ascorbic acid contents in two kinds of tomato fruits namely, Bokwang, Suekwang, which were different distinguished in growth periods during culture. The results obtained were as follows. The nitrate content in two kinds of tomato fruits was relatively higher in Bokwang than Suekwang. It indicated high content as 5.8-12.5 ppm in flesh and 0.3-2.5 ppm in gelatinous pulp. In the beginning of growth period, nitrate content in flesh was 50-62.5ppm, and in the latter period was 21.3-38.4ppm. In the case of gelatinous pulp, it was decreased from 14.0-16.2ppm in the beginnig period to 9.3-10.7ppm in the latter period. In the case of nitite, there was no difference between two varieties. Nitrite content during growth increased from 0.15ppm to 0.21ppm in flesh and from 0.06ppm to 0.1ppm in gelatinous pulp. There was no difference between two varieties during growth in total ascorbic acid content and its concentration was 24.2-27.5mg in gelatinous pulp and was 13.8-18.6mg in flesh. The difference between two parts was about 10mg. In the changes of nitrate and nitrite content in tomato fruits, nitrate was decreased, whereas nitrite content was increased. In the changes of nitrate and ascorbic acid content in tomato fruits, nitrate content was decreased but that of ascorbic acid was increased slightly. In the changes of nitrite and ascorbic acid content in tomato fruits, nitrite content was increased and that of ascorbic acid was slightly increased too.

고분자 복합재료를 위한 액정중합체(I)

조철형,조성휴,조병욱,김정규,김숭평,권중근 조선대학교 생산기술연구소 1983 生産技術硏究 Vol.1983 No.-

Copolyesters containing oxybenzoate as a rigid rod molecule and methylene group and dimethyl tetramethyl disiloxane as flexible spacers were prepared by room temperature solution polymerization for the purpose of the developement of polymeric composite materials. The thermal properties and the characteristics of the polymers were investigated by DSC and a polarizing microscope. The polymers may be formed nematic liquid crystal phase, and the thermodynamic characteristics of their mesophase to isotropic phase transition could be explained on the basis of its structural features.

컬럼형 회분건조기를 이용한 벼의 건조에 관한 연구

변유량,최홍식,조형용,권윤중,김주봉 연세대학교 산업기술연구소 1984 논문집 Vol.16 No.1

The vertical column batch dryer which is suitable to Korean farm was constructed and dryer performance was investigated through field test. The effect of a drying air temperature and an airflow rate on the drying rate was studied, and an empirical drying equation was established. The average drying rate of paddy were 1.6-1.8%/hr at the air temperature of 43℃ and the airflow rates of 19.4 - 24.5 CFM/ft². The differences of grain moisture content between the inner and outer layer of vertical paddy bed were 0.5 - 0.9% The effect of a drying air temperature was larger at high airflow rate. At constant temperature, the drying rate was increased as an airflow rate was increased. The empirical drying equation could be expressed as followed: ??=0.9exp(??) Where K=3.22×?? The average whitening ratio of brown rice which was dried with column batch dryer was higher 0.6% than that of sun dried rice.

ASSESSMENT OF CLIMATIC AND HYDROLOGICAL DROUGHT USING RS AND GIS TECHNIQUE ON KOREAN PENINSULA

Kwon Hyung-Joong,Shin Sha-Chul,Kim Seong-Joon 한국수자원학회 2005 한국수자원학회 학술대회 Vol.2005 No.1

농업생산기반시설 설계기준 개정에 관한 연구: 농지관개 유지관리 편을 대상으로

권형중 ( Hyung Joong Kwon ),박찬기 ( Chan Gi Park ),박성기 ( Seong Gi Park ),유찬 ( Chan Yu ) 한국농공학회 2020 한국농공학회 학술대회초록집 Vol.2020 No.-

농지관개 설계기준은 국가건설기준 『KDS 67 00 00 농업생산기반』 대분류 내에 『KDS 67 40 00 농지관개』중분류로 편입되어 2018년도에 개편되었다. 농지관개 설계기준 내에는 4개의 소분류 설계기준으로서 『KDS 67 40 10 논관개』, 『KDS 67 40 30 밭관개』, 『KDS 67 40 60 수질대책』, 『KDS 67 40 90 유지관리』분류되어 있다. 본 연구에서는 농지관개유지관리 설계기준으로 개정하는 연구로서 1969년도에 제정되고 1983년도에 1차 개정된 농업생산기반정비사업 설계기준의 관개편의 유지관리 부분에 대해서 한국농어촌공사의 관리지침, 규정, 매뉴얼 등과 최신 기술동향을 반영하여 유지관리 설계기준을 개정하였다. 기존 농지관개 유지관리 설계기준은 논관개 유지관리, 밭관개 유지관리, 수질대책 유지관리로 나누어 관리목표, 관리조직 및 체계, 시설관리에 대하여 간략하게 정리되어 있는 실정으로 현장 실무에서 유지관리 관련 사업을 추진함에 있어 설계기준의 적용이 용이하지 못한 문제점이 제기되고 있다. 또한, 농업용 저수지 설계기준이나 취입보 설계기준과 같은 각각의 시설물의 설계기준에 수록되어 있는 유지관리 내용과 중복 혹은 상충되는 부분이 여전히 존재하고 있어 설계기준의 현장 적용시 혼동을 초래하고 있는 실정이다. 본 연구에서는 설계기준의 사용성, 개정의 용이성, 확정성을 향상시킴과 동시에 타 설계기준과의 중복성 및 상충성을 감소시키는 등 효율적인 설계기준을 개정하고 최신 기술동향과 현장 실무 내용을 추가하여 관련 사업에 적용성을 제고하고자 한다. 농지관개 유지관리 설계기준을 개정함으로서 사업별, 시설물별 유사중복 규정을 체계화하고, 사용자의 접근성 및 이용의 편의성 등을 확보하여 유지관리 관련 사업에 본 설계기준의 활용성이 제고될 것으로 기대된다.

웹기반의 하천환경생태주제도 정보시스템 시범구축

권형중(Kwon Hyung Joong),이근상(Lee Geun Sang),황의호(Hwang Eui Ho),고덕구(Koh Deuk Koo) 대한토목학회 2007 대한토목학회논문집 D Vol.27 No.3D

현재 국가에서는 2004년에 구축된 하천관리지리정보시스템(RIMGIS; River Information Management Geographic Information System)의 활용성 증대방안 사업을 진행하고 있다. 이를 통하여 RIMGIS를 웹기반 시스템으로 전환하여 업무지원 기능을 확대하며 시스템에서 제공하는 하천관련 주제도의 다양화를 추진하고 있다. 본 연구는 하천관련 사업에서 조사되는 환경생태 정보를 DB화하고 정보 활용의 극대화를 위해서 GIS 기반의 하천환경생태 주제도(14개)를 시범유역(안성천 및 오산천)에 대하여 구축하였으며 효율적인 정보 서비스를 위해 웹기반의 하천환경생태 정보시스템을 구축하였다. 이를 위하여 하천관련 사업(하천정비기본계획 및 하천환경정비사업)에서 조사되는 환경생태 정보들을 생물, 화학, 물리 분야로 분류하여 14개의 주제도 작성 및 구축 프로세스를 제시하였으며 구축된 주제도 및 환경생태 정보들에 대한 데이터모델을 설계하고 공간 및 속성레이어를 정의를 통하여 35개의 웹페이지를 설계 및 구축하였다. Currently, the government tries to improve the applicability of RIMGIS (River Information Management Geographic Information System). CS (Client Server)-based RIMGIS was replaced by Web-based RIMGIS, and various thematic maps were established to expand service function of RIMGIS. The objectives of this study were to construct database of river environmental and ecological information, and to produce 14 river environmental and ecological thematic maps, and finally to build web-based information reference system. River environmental and ecological information of water-related national project was categorized into 4 fields (biological, chemical and physical field) and the production processes of each thematic map were suggested. According to established data models of each thematic map and defined spatial/attributive layers, 35 web pages were designed.

TOPMODEL과 Muskingum 기법을 이용한 안성천유역의 홍수유출분석

권형중 ( Kwon Hyung-joong ),김성준 ( Kim Seong-joon ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-

In this study, a topography based hydrologic model (TOPMODEL) was tested on the Anseong-cheon watershed. Pit in watershed was removed by liner trend surface interpolator. The DTM Analysis program is used to derived a distribution of ln(tanβ) values from DEM (Digital Elevation Model) using the MDF (Multiple Direction Flow) algorithm of Quinn et al (1995). Current TOPMODEL program limits are number of time step, ln(tanβ) increment, delay histogram ordinate and size of subcatchment pixel maps. Therefore, TOPMODEL is not suitable for application of large watershed. Muskingum method and watershed division enhance grid pixel resolution for rainfall-runoff simulation accuracy.