日本의 牛肉等級制度와 價格形成에 관한 硏究

姜東一 제주대학교 1993 논문집 Vol.36 No.-

The purpose of this paper is to grasp characteristics of the beef grading system and the price-formation mechanism in Japan. The main conclusions are as follows. First, the beef carcass grading system in Japan can be characterized by marbling based on consumer's needs. That is, marbling is the main factor which determines carcass grades and prices. Secondly, it is shown that the price difference between grades is large for the upper grades and that the prices of beef carcasses are affected mostly by marbling. Then price-formation mechanism varies with the grade of quality (high and low). These results indicate that increase in supply of lower quality beef such as imported beef and dairy cattle causes decrease in prices of low grade beef. On the contrary, it causes in prices of high grade beef. Finally, the production of high quality beef centering around Wagyu beef in Japan is premised on this beef carcass grading system.

ELECTROPOLYMERIZATIONS OF POLYPYRROLE AND POLY - N - SUB - STITUTED PYRROLES

강동일,조원제,이희우,하창식 ( D . I . Kang,W . J . Cho,H . W . Rhee,C . S . Ha ) 한국공업화학회 1994 한국공업화학회 연구논문 초록집 Vol.1994 No.1

양액 강도와 공급 중단 시기에 따른 삽목번식한 2품종 딸기의 생장과 개화 반응

강동일,정해경,박유경,황승재,정병룡 경상대학교 농업생명과학연구원 2019 농업생명과학연구 Vol.53 No.4

본 연구는 국내 육성 딸기인 ‘매향’과 ‘설향’의 개화기 양액의 농도와 공급 중단 시기에 따른 개화 및 생육에 미치는 영향을 조사하기 위하여 수행되었다. 런너 삽수를 2017년 11월 23일에 삽목한 후 발근이 충분히 이루어질 때까지 검은색 멀칭 비닐로 덮어 관리하였다. 15일 후 발근이 모두 이루어진 것을 확인 하고 비닐을 제거한 뒤 촉성 작형에 준하여 관리하였다. 양액은 야마자키 처방에 따라 조제하였고 농도 는 각각 1배액 또는 2배액(EC 1.85 또는 3.71 dS·m-1, pH 5.55)으로 조성하여 공급하였다. 양액의 공급 중단은 정식 당일까지 양액을 공급하는 처리를 대조구로 두고 1주 전, 3주 전 및 5주 전에 공급을 중단하는 처리로 구분하였다. 두 품종의 초장은 양액의 공급 중단 시기가 빨라질수록 점차적으로 감소하였다. ‘매향’은 양액의 공급 중단이 조기에 진행될수록 지상부의 생체중이 감소하였다. ‘설향’의 지상부 생체중은 1배액 양액을 정식 1주 전 공급 중단한 처리에서 가장 높았다. ‘매향’의 화수는 2배액 양액 공급 처리에서 전반적으로 더 많았고 정식 1주 전 공급 중단 처리에서 가장 많았다. ‘설향’의 화수는 1배 양액 공급 처리가 2배 양액 공급 처리에 비해 더 많았으며, 특히 2배 양액을 정식 1주 전에 공급 중단한 처리에서 가장 낮은 경향이었으나 처리간 유의적인 차이는 없었다. 결과적으로 화아분화기에는 두 품종 모두 저농도의 양액을 단기간 공급하는 것이 개화 촉진에 있어 효과적인 것으로 판단된다. This study was conducted to investigate the effect of nutrient solution strength and duration of nutrient starvation on the growth and development of strawberry (Fragaria x ananassa Duch.) ‘Maehyang’ and ‘Sulhyang’ at the flowering stage. Cuttings of runner plants were stuck on November 23th, 2017 and were covered with a layer of black plastic film to block light from penetrating and keep the relative humidity high. The black plastic film was removed after 16 days and rooted plants were cultivated for one month with irrigation of water. The Yamazaki nutrient solution with an electrical conductivity (EC) of 1.85 or 3.71 dS·m-1 (1x or 2x ionic strength, respectively) and pH 5.55 was fed to plants after either 0 (control), 1, 3 or 5 weeks of nutrient starvation to the end of experiment. Plant height in both cultivars decreased gradually with the increase in duration of nutritional starvation. The earlier the nutritional starvation started, the smaller the shoot fresh weight of ‘Maehyang’. Hence the greatest shoot fresh weight was obtained in the control which was supplied with the nutrient solution continuously. Shoot fresh weight of ‘Sulhyang’ was the greatest in 1x ionic strength and one week of nutrient starvation before planting. Although number of flowers on the first flower cluster of ‘Maehyang’ and ‘Sulhyang’ showed no significant differences, ‘Maehyang’ had the greatest number of flowers in the 2x ionic strength solution and one week of nutrient starvation before planting, while ‘Sulhyang’ had that in the 1x ionic strength treatment. These results suggest that it is considered effective to supply a nutrient solution at a low concentration for a short period of time for increasing the number of flower differentiated on the first flower cluster in both cultivars.

지구 대기 중 H2O, O2 등가폭의 일중 변화

강동일 한국지구과학회 2010 한국지구과학회지 Vol.31 No.4

The scattered light of solar radiance near the infrared ray area was observed to measure H2O and O2 absorption lines. The changes of H2O and O2 equivalent width were calculated on the basis of the measurement. O2 equivalent width showed negative correlation with the amount of solar radiance; O2 equivalent width had a tendency to diminish as the amount of the solar radiance increased and to increase as the amount of the solar radiance decreased. On the other hand,H2O equivalent width showed the positive correlation with the amount of solar radiance. Especially it was noted that the sum of equivalent width of absorption lines created by H2O and O2 in a day was fairly constant. It is implied that the constant equivalent width is caused by the complementary development of photodissociation and recombination in O2 and H2O. 태양 복사의 지구 대기 산란광을 근 적외선 영역에서 분광 관측하여 H2O와 O2 흡수선을 측정하고 이것으로 태양 복사량에 따른 두 기체의 등가폭 변화를 계산하였다. O2는 태양 복사량이 증가할수록 등가폭이 줄어들고 복사량이감소할수록 커지는 경향을 보였고, H2O는 그 반대의 경향을 보였다. 특히 두 기체가 만드는 흡수선 등가폭의 합은 하루 중에 대체로 일정한 경향을 보였다. 본 연구에서는 이것이 태양광에 의한 광해리와 재결합이 O2와 H2O에 있어서상호 보완적으로 일어나기 때문으로 추측한다.

요관에 발생한 원발성 국소 아밀로이드증 1예

강동일,김도리,임주학,최준호,민권식,최성협 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2

Primary localized amyloidosis of ureter is a rare benign condition radiologically, which is difficult to distinguish from ureteral malignancy. For this reason, although kicney-preserving technique is the best option, most reported cases were treated by nephroureterectomy. We report a case of primary localized amyloidosis of ureter that was misdiagnosed as ureteral tumor, and treated with nephroureterectomy. This patient has no problem so far during its 18 month-follow up.

건설 산업 회계정보시스템 구축 방안에 대한 연구

강동일,윤성용 한국디지털정책학회 2015 디지털융복합연구 Vol.13 No.3

EDAP LT-02 체외충격파쇄석기를 이용한 요로결석 치료의 임상 경험

강동일,민권식,최성협 大韓泌尿器科學會 2002 Korean Journal of Urology Vol.43 No.10

세계를 향해 미소짓는 '어린이 월드컵 도우미'

강동일 한국교육과정평가원 2002 교육광장 Vol.14 No.-

Current Status of 5α-Reductase Inhibitors in Prostate Disease Management

강동일,정재일 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.4

The key enzyme in the androgen synthesis and androgen receptor pathways is 5α-reductase (5-AR), which occurs as three isoenzymes. Types I and II 5-ARs the most important clinically, and two different 5-AR inhibitors (5-ARIs), finasteride and dutasteride,have been developed. Several urology associations have recommended and upgraded the use of 5-ARIs for an enlarged prostate with lower urinary tract symptoms. In the Prostate Cancer Prevention Trial and the Reduction by Dutasteride of Prostate Cancer Events Trial, 5-ARIs reduced the incidence of low-grade prostate cancer. However, despite the documented reductions in the overall incidence of prostate cancer,5-ARIs are at the center of a dispute. The American Society of Clinical Oncology (ASCO)and the American Urology Association (AUA) presented clinical guidelines for the use of 5-ARIs for chemoprevention of prostate cancer in 2008. However, ASCO/AUA has eliminated these from the main “Clinical Guidelines” in 2012, because the U.S. Food and Drug Administration denied a supplemental New Drug Application for the use of dutasteride for prostate cancer chemoprevention. The 5-ARIs can also be used to manage hemospermia and prostatic hematuria, and to prevent intraoperative bleeding, although there is insufficient evidence for a standard strategy. This review summarizes the current use of 5-ARIs for prostate disease, including benign prostate hyperplasia,prostate cancer, prostate-related bleeding, and hemospermia.

BOES 관측데이터의 자동처리 프로그램 개발 II

강동일,박홍서,한인우,이병철,김강민,Kang, Dong-Ii,Park, Hong-Suh,Han, In-Woo,Valyavin, G.,Lee, Byeong-Cheol,Kim, Kang-Min 한국천문학회 2006 天文學論叢 Vol.21 No.2

We developed a new program for automatic continuum normalization of Echelle spectrographic data. Using this algorithm, we have determined spectral continuum of almost BOES data. The first advantage of this algorithm is that we can save much time for continuum determination and normalization. The second advantage is that the result of this algorithm is very reliable for almost spectral type of spectrum. But this algorithm cannot be applied directly to the spectrum which has very strong and broad emission lines, for example Wolf-Rayet type spectrum. We implanted this algorithm to the program which was developed in the previous study. And we introduced more upgraded BOES data reduction program. This program has more convenient graphical user interface environment, so users can easily reduce BOES data. Lastly, we presented the result of study on line profile variation of magnetic Ap/Bp stars analyzed using this program.