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한국 재래종 콩의 isoflavone과 saponin 함량 변이
이지석,이효재,곽병삼,박병덕,정재현,신현만,정헌상,김홍식 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
고품질 콩 품종육성을 위한 기초자료로 활용하기 위하여 한국 재래콩 292점의 isoflvone과 saponin 함량의 변이를 구명한 결과, 총 isoflavone 함량은 평균1390.2㎍/g 이었고 420.6∼2907.3㎍/g의 범위였다. isoflavone 함량의 분포는 1000∼1500㎍/g 범위에서 가장 많이 분포하였고, 1500∼2000㎍/g의 범위가 그 다음으로 높았고, 2500㎍/g이상은 5점 이었다. isoflavone함량은 genistein, daidzein 및 glycitein 순으로 높았다. 총 isoflavone의 함량은 daidzein 및 genistein과 높은 정의 상관관계 이었고, daidzein 과 genistein 간에도 정의 상관관계이었다. 총 saponin 함량은 평균4347㎍/g 이었고 1932∼8400㎍/g의 범위였다. Group A saponin 함량은 평균529㎍/g 이었고 243∼1231㎍/g의 범위였다. Group B saponin 함량은 평균3817㎍/g이었고 1584∼7598㎍/g의 범위였다. Group B saponin이 높은 자원은 IT226841, IT228304, IT228251이었으며, 총 saponin함량이 높은 자원은 IT226841(8,400㎍/g)이었다. 총 saponin 함량과 Group B saponin의 함량 간에는 정의 상관이었다.
衛星通信에 관한 硏究 : Filter의 性能改善을 中心으로 Especially on the Improvement of Filter Performance
鄭憲相,宋鐵,劉炳守,朴暢均,白亨來,鄭鍾熙,李炅燮 조선대학교 동력자원연구소 1986 動力資源硏究所誌 Vol.8 No.2
There are two kinds of data transmission communication method, namely, Analog communication method and Digital communication method. The latter has many excellent characteristics as compared with the former. In order to design excellent Digital Filter, the window function is studied in this paper. The conventional time-domain windowing requires N/2 stored values of the data window and N multiplications. A class of windows, called binary windows, for the frequency-domain implementation of the Discrete Fourier Transform is proposed. They do not require multiplications or stored constants ; rather, they are replaced by shift and add operations. These windows offer excellent sidelobe behavior compared with the conventional windows.
太陽熱發電을 爲한 集熱方式에 關한 硏究 : 集熱效率 改善方案을 中心으로
鄭憲相,崔昌柱,李愚宣 조선대학교 생산기술연구소 1981 生産技術硏究 Vol.1981 No.-
Energy crisis is a serious probrem for human life. We have been suffered from the lack of oil energy many years. A variety of approaches have been used for converting solar energy into electricity, including solar-thermal conversion, photovoltaic devices and bio-conversion. Radiation of sun is an ahundant, clean source of energy; All that required is the development of technology to convert this energy into electricity economically. In this paper, we have rcaea rched on the solar thermal collecting method especially on the improvement method of thermal collecting efficiency. The result of experiments are as follows: Generally used mirror has the best quality as a reflector at concentrator and text is Aluminium. Oxidized copper is the best one as an absorber and next is original copper. We chose cylindrical parabolic concentrator in the place of parabolic type because of the difficulty of design and manufacture in this research.
정헌상,황의봉 한국조명전기설비학회 1999 조명·전기설비학회논문지 Vol.13 No.3
영상처리에서나 컴퓨터 비젼에서 직선검출 및 인식에 Hough 변환이 잘쓰이는데 거리데어터를 log를 취하여 방위각에 대한 관게를 곡선으로 그리면 그 형상의데이터에 관계없이 일정하므로 이를 이용하여 계산 시간을 대폭 줄일 수 있다. 그 방법과 효율적 알고리즘을 제시하자 한다. Hough transform is well employed to retect or recognize the lines in image processing or in computer vision. Curve of the logarithm of ranges against the bearing does not change its shape according to data trints. This fact suggests that calculation cost can be remarkably reduced. An effective line detection algorithm is represented.sented.
정헌상,정수복,서진연 조선대학교 동력자원연구소 1996 動力資源硏究所誌 Vol.18 No.1
In the general, the speed control of single-phase induction motor is accomplished at a few discrete speed by using tapped-winding, pole changing or gear. These technique is inefficient and complicated. In the reason, the applied voltage of single-phase induction motor is controlled for improvement speed characteristics. The AC converter can be easily realized using module transistor. The output voltage from the AC converter is applied to single-phase induction motor. This paper presented operating characteristics of single-phase induction motor by AC converter.
太陽熱 發電에 關한 硏究 : 選擇吸收器의 效率改善方案을 中心으로
鄭憲相 조선대학교 생산기술연구소 1983 生産技術硏究 Vol.1983 No.-
The most important component in achieving high efficiency of a fixed, evacuated solar collector is the selective absorber. High quality optical properties (high absorptance and low emittance) and high temperature duability of the selective absorber are more important for the efficient and lasting operation of a fixed, evacuated, concentrating collector designed for operation at higher temperatures than for any other type of collector. In this paper, the improvement method of formation of the selective absorbers has been described. In order to obtain a low cost selective absorber for collector, silvering a number of glass samples by the Brashear process, subsequently electroplating and baking them in different conditions. This selective surface of the samples consists of a number of thin layers on a supporting substrates, including a carbonaceous absorbing layer, a catalyst layer, and a metallic infrared reflecting layer. The catalyst layer serves to catalyze the pyrolysis of a carbon containing gaseous compound to form the carbonaceous layer. The solar absorptance at AM2 and thermal emittance at 100℃ of the ideal selective absorber are known as 0.94 and 0.05 respectively. The best qualified samples in the experiments are 109B, 142L and 135L. The solar absorptance at AM2 and thermal emittance at 100℃ of these samples are calculated as follows: 109B : 0.94, 0.067, 142L : 0.94, 0.0683, 15L : 0.94, 0.070
鄭憲相 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
For satellite communications in the 1980s, there is a strong trend toward wide-band communications packages utilizing a multiplicity of narrow high-powered beams. There are numerous advantages to this trend; a disadvantage, however, is the burden this technology places on the interconnection flexiblity of the satellite. To restore this interconnection fiexibility, an onboard realtime timedivision multiple access (TDMA) communications system linking thestations has been proposed. This approach has been broadly termed satellite-switched TDMA (SS-TDMA) and is based upon the switching occurring between multiple transponders, each with fixed antenna pointing. Another class of SS-TDMA incorporates individual transponders with variable antenna pointing (beam-swit-ched). This paper explores and develops the conceptual configuration and technology base for both types of SS-TDMA, discusses hybrid approaches wherein both tytes are interconnected, considers the use of onboard regeneration, and closes with a treatment of the advantages of SS-TDMA to mobile and military satellite communications.