열처리가 FeSiB 연자성 박막의 자기특성에 미치는 영향

홍종욱,장태석,박종완,Hong, Jong-Wook,Jang, Tae-Suk,Park, Jong-Wan 한국재료학회 2002 한국재료학회지 Vol.12 No.11

We have prepared magnetic thin films of FeSiB by sputtering and examined microstructure and magnetic properties of the annealed films in order to investigate the feasibility of the films to microsensor application. Effects of vacuum annealing on the magnetic properties of $Fe_{84}$$Si_{6}$$B_{10}$ films have been examined as a function of temperature. The heating rate and the holding time were 10 K/min and 1 hour, respectively. Vacuum condition was held during cooling to prevent oxidation of the films. The coercivity did not show any noticeable change (~1500 A/m), although the grain size of the crystalline phase in the annealed films increased gradually up to about 16 nm until 673 K. However, both the grain size and the coercivity increased steeply when the annealing temperature increased over 723 K. Since the saturation magnetization is closely related to the phase evolution, the variation of the saturation magnetization of the annealed films was similar to that of the ribbon materials; the thin films were transformed from amorphous to crystalline with $\alpha$-(Fe,Si) phase by increasing annealing temperature.

조기이유자돈에 있어서 난황항체를 이용한 장독성 대장균 987P(F6) 설사증 방어효과

홍종욱,김인호,김정우,권오석,이상환,홍의철,Hong, Jong-wook,Kim, In-ho,Kim, Jung-woo,Kwon, Oh-suk,Lee, Sang-hwan,Hong, Eu-chul 대한수의학회 2001 大韓獸醫學會誌 Vol.41 No.1

The protective effects of egg yolk atibodies obtained from chickens immunized with fimbrial antigens from ETEC 987P were evaluated in 14 and 21 d old pigs in which ETEC diarrhea was induced. For the Exp. 1, eight early-weaned pigs($5.00{\pm}0.5kg$ average BW and 14 d average age) and eight weaned pigs($6.00{\pm}0.5kg$ average BW and 21 d average age) were used to examine influence of egg yolk antibodies on growth performance and resistance to ETEC 987P infection. Dietary treatments included 1) administered of commercial egg yolk(14 d of age; CEY14), 2) administered of egg yolk antibodies(14 d of age; EYA14), 3) administered of commercial egg yolk(21 d of age; CEY21), 4) administered of egg yolk antibodies(21 d of age; EYA21). The 14 and 21 d old pigs were challenged with 2 ml of ETEC 987P at a dose of $10^{10}\;CFU\;ml^{-1}$ per weaned pigs. Weaned pigs treated with egg yolk antibodies recovered and pigs treated with egg yolk antibodies tended to increase average daily gain(P<0.05). Also, EYA12 and EYA21 treatments were reduced coli-form bacteria concentration and increased Lactobacilli sp. concentration from feces. For the Exp. 2, sixteen weaned pigs($6.00{\pm}0.5kg$ average daily gain BW and 21 d average age) were used to examine influence of yolk or white from egg containing antibodies on growth performance and resistance to ETEC 987P infection. Dietary treatments included l) administered of commercial egg yolk(CEY), 2) administered of commercial egg white(CEW), 3) administered of egg yolk antibodies(EYA), 4) administered of egg white antibodies(EWA). Pigs treated only with EYA showed signs of recovery. Also, EYA treatment showed the best average daily gain without significant differences (P>0.05). EYA treatment was reduced coli-form bacteria concentration increased and Lactobacilli sp. concentration from feces. In conclusion, egg yolk antibodies have protective effects from pigs in which ETEC diarrhea was induced.

로봇과 자폐 아동의 상호작용에 관한 실험 연구

홍종욱 ( Jong Wook Hong ),김영덕 ( Young Duk Kim ),강원석 ( Won Seok Kang ),이효신 ( Hyo Shin Lee ),백상수 ( Sang Su Baek ),구현진 ( Hyun Jin Ku ),안진웅 ( Jin Ung An ) 한국정서.행동장애아교육학회(구.한국정서학습장애아교육학회) 2010 정서ㆍ행동장애연구 Vol.26 No.2

본 연구는 자폐를 가진 아동의 장난감 놀이상황에서, 전자 장난감 로봇과 대상 아동간의 상호작용과 일반 장난감 로봇과의 상호작용 정도에 차이가 존재하는지를 비교실험을 통해 조사해보았다. 3명의 자폐를 가진 아동에게 14회기에 걸쳐서 전원을 끈 상태의 장난감 로봇과 전원을 켠 장난감 로봇을 가지고 놀게 한 놀이 실험 상황에서 장난감 로봇과의 상호작용을 놀이조작 빈도수와 놀이조작 지속시간을 측정하였다. 연구는 교사면담, 아동관찰, 비교실험연구, 그리고 교사면담 순으로 이루어졌으며, 연구도구는 대구경북과학기술원(DGIST)에서 제공한 6대의 전자 장난감 로봇으로 실험을 진행하였다. 연구결과 전반적으로 참여 아동 모두가 전원을 끈 장난감 로봇에 비해 대체로 전원을 켠 장난감 로봇을 가지고 노는 상호작용 빈도수와 상호작용 지속시간이 증가하였다. 몇몇 종류의 장난감 로봇에서는 전원을 켠 상태에서 이러한 상호작용의 지속성과 빈도의 순위의 변화가 나타나기도 했으나, 6대의 장난감 로봇의 선호도는 아동마다 차이가 있었다. 이 실험과 관련한 향후 연구를 위한 제안과 이 실험의 제한점에 관해 토의하였다. The purpose of this experimental study is to examine whether there is any difference in interactions of autistic children between electronic robotic toys and non-electronic robotic toys. Three young children with autism were observed while they played with six different electronic robotic toys with the power off and then with the power on. The frequency and duration of their interactions with each toys were collected using event sampling and partial interval methods to cal mee the mean differences in terms of their interactions. The results of the study showed that overall frequency and duration of interactions increased when participants played with electronic robotic toys. However, there was much variations in the order of toys each participant played with, in terms of duration and frequency. Research implications for future study and the limitations of this study were discussed.

환경친화성양돈사료를 위한 효소제 사용의 최근 경향

홍종욱 ( Hong Jong-wook ),김인호 ( Kim In-ho ) 한국유기농업학회 2001 韓國有機農業學會誌 Vol.9 No.2

본 논문의 목적을 위한 외인성 효소 즉 phytase, β-glucanase, pentosanase는 전 세계적으로 양돈사료에 첨가제로서 광범위하게 사용하고 있다. 이러한 효소의 화학적 효과는 이해가 잘 되고 있다. 하지만 돼지에서 이러한 효소들의 효과에 대해서는 아직까지 논란의 여지가 있다. Phytase는 곡류내 존재하는 피틴태 인의 이용성을 증가시킬 수 있어 배설되는 분 중 인의 오염도를 낮출 수 있고 사료내 사용하는 무기태 인의 양을 감소시킬 수 있다. 또한, 보리와 귀리에 존재하는 β-glucanase와 호밀과 밀에 존재하는 용해성 pentosans과 같은 효소들은 양돈사료에서 찾을 수 있는 항영양소 인자들을 분해하는 효과가 있다. 그래서 비전분과당류들의 소화율을 증가시키는 결과를 초래한다. 앞으로 이 분야의 연구는 현재 효소들의 효율적인 사용, 효과적인 다른 생산품의 개발 그리고 열 안정성 효소들의 개발들을 포함하고 있다.

마이크로프로세서 응용에 적합한 새로운 구조의 위상/주파수 검출기를 가지는 50 to 150MHz PLL

홍종욱(Jong-Wook Hong),이성연(Sung-yon Lee),정우경(Woo-Kyung Jung),이용석(Yong-Surk Lee) 대한전자공학회 1999 대한전자공학회 학술대회 Vol.1999 No.11

식이내 타우린 첨가가 비육돈의 성장, 등지방두께, 체내 콜레스테롤 및 타우린 농도에 미치는 영향

홍종욱(Jong-Wook Hong),김인호(In-Ho Kim),권오석(Oh-Suk Kwon),김지훈(Ji-Hoon Kim),이지훈(Ji-Hoon Lee),민병준(Bung-Jun Min),이원백(Won-Bak Lee),임미형(Mi-Hyung Lim),최수정(Su-Jeong Choi),김을상(Eul-Sang Kim),정윤화(Yoon-Hwa Jeong) 한국식품영양과학회 2003 한국식품영양과학회지 Vol.32 No.4

본 연구의 목적은 식이내 타우린의 첨가가 성장, 등지방두께, 혈액 및 조직내 총콜레스테롤과 타우린 함량에 미치는 영향을 평가하기 위하여 실시하였다. 개시시 체중 71.11±0.14㎏의 비육돈 48두를 공시하여 42일간 사양실험을 실시하였다. 실험설계는 옥수수-대두박 위주의 대조구(CON), 대조구 식이에 타우린 0.3% 첨가한 처리구(TAU0.3) 그리고 대조구 식이에 타우린 0.6% 첨가한 처리구(TAU0.6)로 3개 처리로하였다. 전체 사양실험 기간동안, 일당증체량에 있어서는 타 우린 급여수준이 증가함에 따라 증가하는 것으로 나타났으며(Quadratic effect, p<0.05), 식이효율에 있어서도 비육돈 식이내 타우린 첨가 수준이 증가함에 따라 향상되는 것으로 나타났다(Quadratic effect, p<0.02). 혈청내 총콜레스테롤 농도에 있어서는 타우린 첨가 수준이 증가함에 따라 유의적으로 감소하는 것으로 나타났으며(Linear effect, p<0.04), 간내 총콜레스테롤 농도에 있어서도 타우린 첨가수준이 증가함에 따라 유의적으로 감소하는 것으로 나타났다(Linear effect, p<0.01). 혈장 및 간장내 타우린 농도에 있어서는 비육돈 식이내 타우린 첨가수준이 증가함에 따라 혈장(Linear effect, p<0.01)과 간장(Linear effect, p<0.01)에서 유의적으로 증가하는 것으로 나타났다. 또한, 등심내 타우린 농도에 있어서도 비육돈 식이내 타우린 농도가 증가함에 따라 유의적으로 증가하였다(Linear effect, p<0.01). 결론적으로, 비육돈 식이내 타우린의 첨가는 성장률을 향상시키며, 혈청 및 간내 총콜레스테롤 농도를 감소시키는 것으로 나타났다. 또한, 혈장 및 등심내 타우린 농도를 증가시키는 것으로 평가되었다. The purpose of the this experiment was to evaluate taurine supplementation on growth performance, backfat thickness and cholesterol and taurine concentrations in finishing pigs. A total of forty eight pigs (71.11±0.14 ㎏ initial body weight) were used in a growth assay. The control diet (CON) was corn-soybean meal based diet, whereas the other dietary treatments were supplemented by additional 0.3 and 0.6% of taurine into the control diet (TAU 0.3 and TAU 0.6, respectively). As the addition of taurine in the diets increased, average daily weight gain (Quadratic effect, p<0.05) and gain/feed (Quadratic effect, p<0.02) were improved. Total- cholesterol concentrations of serum (Linear effect, p<0.04) and liver (Linear effect, p<0.01) decreased with increasing taurine. As the addition of taurine in the diets increased, taurine concentrations of plasma (Linear effect, p<0.01), liver (Linear effect, p<0.01) and boston butt (Linear effect, p<0.01) were increased. In conclusion, finishing pigs fed the dietary taurine had improved growth ratio and decreased total-cholesterol concentrations of serum and liver. Also, finishing pigs fed the dietary taurine had increased taurine concentrations of plasma and boston butt.

비육돈에 있어 황기, 인삼, 양파 혼합물의 급여가 성장 및 도체 특성에 미치는 영향

홍종욱(Jong-Wook Hong),김인호(In-Ho Kim),김지훈(Ji-Hoon Kim),권오석(Oh-Suk Kwon),이상환(Sang-Hwan Lee),서완수(Wan-Soo Seo),김철(Chul Kim),김을상(Eul-Sang Kim),정윤화(Yun-Hwa Chung) 한국식품영양과학회 2002 한국식품영양과학회지 Vol.31 No.1

본 연구의 목적은 생약제 및 양파 혼합물의 급여가 비육돈의 성장 및 도체 특성에 미치는 영향을 평가하기 위하여 실시하였다. 3원 교잡종(Duroc×Yorkshire×Landrace) 비육돈 72두를 공시하였으며 시험개시시의 체중은 75.66±1.86 kg이었다. 처리구로는 옥수수-대두박 위주의 식이에 NRC(12)의 영양소 요구량에 따라 처리한 구(Control: 기초식이), 대조구 식이내 생약제 및 양파 혼합물을 0.25% 첨가한 구(AGO 0.25: 기초식이+0.25% 생약제 및 양파 혼합물), 대조구 식이내 생약제 및 양파 혼합물을 0.50% 첨가한 구(AGO 0.50: 기초식이+0.50% 생약제 및 양파 혼합물)로 3개 처리를 하여 처리당 4반복, 반복당 6마리씩 완전임의 배치하였다. 본 사양시험에 사용한 생약제 및 양파 혼합물은 인삼, 황기 그리고 양파분말을 함유한 것을 사용하였다. 전체 시험기간 동안, 생약제 및 양파 혼합물의 첨가수준이 증가함에 따라 일당증체량이 증가하였다(linear effect, p<0.01). 비육돈 식이내 생약제 및 양파 혼합물의 첨가량이 증가함에 따라 식이효율 및 등지방 두께가 증가하는 경향을 나타내었으나 유의적인 차이는 보이지 않았다(p>0.05). 도체등급에 있어서는 생약제 및 양파혼합물의 첨가수준이 증가함에 따라 A등급 출현율이 높은것으로 평가되었다(linear effect, p<0.01). 대조구 및 AGO 0.50 처리구와 비교하여 AGO 0.25 처리구가 혈청내 총 콜레스테롤 및 LDL+VLDL 콜레스테롤 농도가 낮은 것으로 평가되었으나 유의적인 차이는 보이지 않았다(p>0.05). 도축한 돈육의 등심부위 육색에 있어서 L-^*, a-^*, b-^*값에 있어서도 유의적인 차이를 보이지 않았다(p>0.05). 생약제 및 양파 혼합물 급여에 따른 증체량 개선효과로 인해 증체당 식이비는 대조구가 830원, AGO 0.50 처리구가 813원으로 대조구와 비교하여 2.05%의 식이비 절감 효과를 나타내었다. 결론적으로 비육돈 식이내 생약제 및 양파 혼합물의 첨가가 성장 촉진을 갖는 것으로 사료되나 도체특성에는 영향을 미치지 않는 것으로 판단된다. Seventy two Duroc×Yorkshire×Landrace pigs (75.66±1.86 kg average initial body weight) were used in a 45 days growth assay to determine the effects of Astragalus membranaceus, ginseng and onion complex on growth performance and carcass characteristics of finishing pigs. Dietary treatments included 1) Control (basal diet), 2) AGO 0.25 (basal diet+0.25% Astragalus membranaceus, ginseng and onion complex), 3) AGO 0.50 (basal diet+0.50% Astragalus membranaceus, ginseng and onion complex). For overall period, average daily weight gain increased as the concentration of Astragalus membranaceus, ginseng and onion complex in the diets was increased (linear effect, p<0.01). Gain/feed improved without significant difference (p>0.05) as the concentration of Astragalus membranaceus, ginseng and onion complex in the diets was increased. As adding level of Astragalus membranaceus, ginseng and onion complex increased in the diets, A grade appearances of carcass tended to increase (linear effect, p<0.01). The total and LDL+VLDL cholesterol concentrations in serum of pigs fed AGO 0.25 diet were lower than them of pigs fed Control and AGO 0.50 diets without significant difference (p>0.05). L^*-, a^*-, and b^*-value of M. longissimus dorsi muscle were not significantly different among the treatments (p>0.05). Total feed cost per kg of weight gain was lower in the AGO 0.50 treatment (813 won) than in the Control (830 won). The results obtained from this feeding trial suggest that the Astragalus membranaceus, ginseng and onion complex supplementation for finishing pigs had improved growth performance. However, carcass characteristic was not affected by supplemental Astragalus membranaceus, ginseng and onion complex.

식민지기 윤일선의 일본 유학과 의학 연구

홍종욱(HONG Jong-wook) 대한의사학회 2018 醫史學 Vol.27 No.2

In this article, I looked at the life of Yun Il-sun, a representative medical scientist of modern Korea, and examined the following problems. First, I took note of the position of the Korean people in the academic system of the Japanese colonial empire and restored the life of Yun Ilsun as specifically as possible. Yun was educated among Japanese people from elementary school to university. Although he received the best education at Old System High School and Imperial University and grew to be a prominent medical scientist, he could not overcome his identity as a colonized. Yun Il-sun, who moved from Keijo Imperial University to Severance Union Medical College, involved in activities founding of the Korean Medical Association and the Korean Medical Journal. Second, I the meaning of ‘culture’ to the intellectuals in the periphery. Old System High School and Imperial University where Yun Il-sun was educated were the hotbed of ‘culturalism.’ Yun’s college days were the heyday of Taisho Democracy, and students were attracted to Marxism, Christian poverty movement, Buddhist cultivation movement and so on. Yun sought to overcome the ideological of young people through the acquisition of ‘culture.’ The ‘culture’ emphasized by Yun had an enlightenment characteristic that emphasized education, but it also functioned as a‘identity culture of educated elites.’ Third, I used the concept of ‘colonial academism’ and examined the aspects and characteristics of the colonial-periphery academic field, focusing on medicine. Yun Il-sun was a Korean professor at the Keijo Imperial University. He founded an academic society and published an academic journal for Koreans. He attempted to reproduce scholarship by doctoral dissertations. At the same time, several facts show that he was also in the affected area of ‘colonial academism’: the fact that he was kicked out of the Keijo Imperial University, the fact that the Korean Medical Association and the Korean Medical Journal were banned by Governor General, the fact that his students asked for doctoral degrees from Kyoto Imperial University where he studied. Yun Il-sun crossed the limits of ‘colonial academism’ and acted as the agent of empire. This was made possible by the characteristics of the academic discipline of medicine, the environment of the Severance Union Medical College, and personal traits of superior ability and indifference to politics. I the postcolonial evolution of the ‘colonial academism’ and ‘culturalism.’ The mix of continuity and discontinuity from ‘colonial academism’ and the hybrid of Japanese academism and American academism, the Korean characteristics of ‘postcolonial academism.’ Yun tried to harmonize the American academism with the Japanese academism and the purity of academism. This effort was revealed as an emphasis on basic medicine and natural sciences. As combined with culturalism and indifference to politics, he was recognized as the symbol of ivory tower and academism.

일본 지식인의 근대화론 비판과 민중의 발견

홍종욱(Jong-Wook Hong) 한국사학회 2017 史學硏究 Vol.0 No.125

1960년대 고도성장기에 접어든 일본 사회에서는 미국 발 근대화론이 크게 유행하였다. 근대화론은 일본을 아시아 근대화를 위한 모델로서 위치 지었다. 다케우치 요시미는 근대화론을 비판하면서 전전 일본의 아시아주의 재평가를 주장하여 파문을 일으켰다. 다케우치는 제국주의 진영에 가담한 일본적 근대와 제국주의에 저항한 아시아적 근대를 구별한 뒤 아시아적 근대와 접속하고자 했던 아시아주의 전통 속에서 근대화론을 비판할 사상적 자원을 이끌어내고자 하였다. 가지무라 히데키를 비롯한 한국사 연구자들은 다케우치의 시각을 다른 의미의 근대화론 혹은 일본 모델론에 지나지 않는다고 비판했다. 새로운 계기가 된 것은 지배 세력에게 포섭되면서도 끈질기게 저항하는 민중의 발견이었다. 가지무라는 베트남 파병과 한일 경제협력 속에서 근대화를 열망하는 한국 민중의 모습을 확인했다. 동시에 생활 세계 혹은 민족적 생활권을 지키고자 하는 민중의 또 다른 모습을 발견하고, 근대화론이 지향하는 균질적이고 일원적인 근대는 불가능하다는 확신을 얻었다. 이로써 근대화론에 대한 진정한 극복이 가능해졌고 다케우치 요시미를 이해하게 되었다. In the 1960s when Japan was about to get to the economic growth, the modernization theory from United States took on in the country. The modernization theory, in order to use Japan as the model for modernizing Asia, appreciated Japan’s early modern period and Japan’s unique successful linkage with the world capitalism system. At that time Takeuchi Yoshimi, criticizing the modernization theory, appreciated Japan’s Asianism before 1945 so that he was able to distinguish the Asiatic modernity which resisted the western imperialism from Japanese modernity which participated in it. Takeuchi tried to extract the resource of thought from the Asianism’s tradition which kept putting the Asiatic modernity against Japanese modernity. The Japanese researchers of Korean history including Kajimura Hideki, thought the appreciation of the Asianism was only a kind of the modernization theory or a new logic to make Japan the model of modernization. The chance for making the change came with the discovery of people, who on the one hand was subordinated to the ruling class, and on the other hand kept resisting against it. Kajimura saw Korean people who endeavored to be modernized by sending troops to Vietnam and economic cooperation with Japan, and also saw the resisting shape of Korean people through the movement for democracy. The modernization theory is supported by the people’s desire, but the people has another desire of protecting the life-world and national sphere of life. Kajimura recognized the influence of the modernization theory, but at the same time became convinced that homogeneous modernization should be impossible. Hereby Kajimura could overcome the modernization theory and got a chance to understand the project of Takeuchi.

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홍종욱(Jong Wook Hong),주한수(Han Soo Joo),이태수(Tae Soo Lee) 대한안과학회 1989 대한안과학회지 Vol.30 No.3