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새(Arundinella hirta.) 건초의 조제법에 의한 사료가치 비교시험
윤상원,신상주,윤익석 한국축산학회 1969 한국축산학회지 Vol.11 No.2
An experiment was conducted to determine the feeding values of Arundinella hirta, hays made by different methods i.e., artificial drying and sun curing under various conditions which resulted in hays class Ⅰ, Ⅱ and Ⅲ. 1. There was no difference in crude protein content among the treatments, whereas total organic matter, crude fat and nitrogen free extract were diminished in the reverse function of the time required in curing hays thus causing a relative increase of crude fibre and mineral matter. 2. A lower digestibility of nitrogen fraction of artificially cured hay compared to that of sun cured class Ⅰ observed in this trial may be due to the denaturization of protein caused by the high temperature employed during the treatment. The digestibilities of total organic matter, crude fat, nitrogen free extract and crude fibre were steadily lowered as the time of hay curing was prolonged but that of mineral matter was exceptional; it was augmented. 3. For the maximum preservation of total digestible nutrient the artificial drying was proved to be superior to that of sun curing; in fact the former amounts more than 3 times higher than that of sun cured class Ⅲ. Of the sun cured, the nutritional value of hays drops steadily as the curing time prolonged and this is most apparent in case of digestible crude protein.
윤상원 한국근현대사학회 2013 한국 근현대사 연구 Vol.67 No.-
On April 6th 1920, as Far Eastern Republic was established in Irkytsk, CivilWar in Siberia entered the new phase. Japanese army, the only survived forcesamong the Imperialistic interventionists, retreated to southern part of the Maritimeprovince. It resulted in forminga sanctuary between Iman and Spask and causedthe stalemate of the civil war. Eventually, this stalemate was broken as soonas the White Guard Army which was supported by Japanese Army started totake over regions beyond the sanctuary. It was a trigger for starting Civil Warin Russian Far East, the last phase of Siberian Civil War. At that time, there was Korean Volunteer Army which consisted of three troopsin Iman. On December 4th 1921, the defensive battle took place by the secondtroop led by Han Un-yong to protect Iman. In this battle, there were only threesurvivors from that troop while the estimated loss of the White Army was over600 people. Thanks to the heroic death of Han’s troop, other Armies could safelyretreat to the rear. Since then, People’s Revolutionary Army of the Far EasternRepublic withdrew to station In through Khabarovsk. However, this withdrawaldid not last long. Soon they counterattacked and won Iman back. During thesefierce battles, Korean Volunteer Army made the remarkable contribution in manybattles such as battle in Volochaevka. Also, during the Civil War in RussianFar East, Korean Partisan units from Suifen and Suchan made significant gainsby collaborating with Russian Partisan troops in the battle against the WhiteArmy supported by Japanese Army. As you can see, Korean Volunteer Army and Korean Partisan units playedthe critical role during the Civil War in Russian Far East which is regarded asthe last phase of Siberian Civil War. Especially, the achievements that Korean troops gained during the battle against Japanese Army and the White Armyfrom the late 1921 to end of 1922 could stand beside to the great victory ofIndependence troop in both Bong-o-dong and Chong-san-ri battles in 1920. Also,their remarkable contribution for Soviet Red Army to win in Civil War in RussianFar East set the milestone for Korean society to develop in the Maritime provincesince then.
윤상원 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.5
This study presents a new design of an electromagnetic energy harvester integrated with a soft magnetic material. The harvester design optimizes the magnetic material characteristics and the size of a rectangular permanent magnet. The design employs a complete magnetic circuit made of (1) a thin-film soft magnetic material that facilitates a flexible but highly (magnetically) permeable beam and (2) an optimally-sized magnet that maximizes the harvester performance. The design is demonstrated to reduce magnetic flux leakage, and thus considerably enhances both magnetic flux density (B) and its change by time (dB/dt), which both influence harvester performance. The improvement in harvester performances strongly depends on critical design parameters, especially, the magnet size and characteristics of magnetic materials, including permeability, stiffness, and thickness. The analyses conclude that recently-introduced nanomaterials (having ultrahigh magnetic permeability) can potentially innovate harvester performances. However, the performance may be degraded without design optimization. Once optimized, the integrated nanomaterials facilitate a significant improvement compared with a conventional design without integrated magnetic materials.
國內 乳牛의 結核 發生에 관한 疫學的 調査 및 豫防策에 대한 硏究
尹相元,李元暢,李康郁,尹和重 건국대학교 1972 學術誌 Vol.14 No.1
Epizootiological survey on the bovine tuberculosis of dairy cattle in Korea was made, and the following pathological findings and economical losses resulting from the tuberculosis were summarized. 1.Incidence rate of bovine tuberculosis in dairy cattle in 1961 was 1161.2 per 100,000 (1.16%), reduced somewhat in 1962 to 187, but increased up to 669.2 (0.67%) in 1969. 2.Distribution of geographical incidence of the tuberculosis in dairy cattle during 1968-1970 showed ; 70% of the incidence occured in Kyong-gi province and 11.6% in Seoul area. These areas could be considered as the enzootic area in terms of bovine tuberculosis. 3.Pathological investigation made over the Kyong-gi province area, where 67.8% of the total number of dairy cattle in Korea are being raised, indicated 82.4% of total incidence of tuberculosis has been occured in the visinity of Seoul City area. Comparison of incidence rate made with these of other countries indicated Korea has the highest rate of occurence. 5.The highest rate of tuberculosis could be found in dairy cattle whose age range between 2-3 years old, which accounted 39.3% of the total incidence. 6.Classification of 150 cases of tuberculosis examied by each organ showed the following patterns ; 44-59% in lung, 11.6-19.6% in liver, 41.8-71.0% in tracheo-bronchial lymph glands, which showed the highest rate, 13.0-21.5% in inguinal lymph glands, 11.8-36.3% in mandibural lymph glands, 19.5-75.9% in mesentric lymph glands, 6.5-l5.6% in udder and 5.9-19.3% in diaphragm and pleura. 7.Correlation of positive cases of tuberculosis, detected by induration size and pathological observation made postmortem in different organs indicated the induration size over 5 mm was found in the cases where lung and diaphragm & pleura case simiutaneously affected, or lung and liver were affected, and 66.9% and 63.6% of total cases were found to be affected with the above organs respectively. 8.Economical losses due to the bovine tuberculosis were calculated to be a total of 225,740,000 won during 1961-1970. 9.Since the incidence rate of bovine tuberculosis is geographical distribution along the visinity of Seoul areas the current anti-campaign will have to be rectified and broaden the bounds of domestic animals for a counter-tuberculosis campaign in the future.