수열합성법으로 제조한 흑색 자성안료의 Fe²⁺/Fe³⁺ 몰비에 따른 특성

정명호,장건익,Jung, Myung-Ho,Jang, Gun-Eik 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.12

$Fe_3O_4$ was prepared on the $TiO_2-coated$ natural mica substrate. The natural mica has an average particle size of $22{\mu}m$. The substrate was coated on $TiO_2$ thin films using hydrothermal synthesis at pH 1.5-2.5 at $75^{\circ}C$. The Fe precursor solution was prepared by mixing $FeSO_4$ (for $Fe^{2+}$ ion) and $FeCl_3$ (for $Fe^{3+}$ ions) with different molar ratios such as 1/2, 1/1, 2/1, 3/0, and $Fe_3O_4$ only. X-ray diffraction analysis shows that the crystal structure depends on the $FeCl_3-to-FeSO_4$ molar ratio. $Fe_3O_4$ crystal phase could be obtained at higher $FeSO_4$ contents.

군 입대 전후 후기청소년들의 스트레스와 관심사항에 대한 대처방안 연구

정명호(Jung Myung-Ho),변상해(Byun Sang-Hae) 한국군사회복지학회 2019 한국군사회복지학 Vol.12 No.1

본 연구 목적은 군 입대를 앞둔 후기청소년들을 대상으로 군 입대전후 예상되는 스트레스와 관심사항을 식별하여 개인 및 사회(국가, 군부대, 대학교 등)가 추진해야 할 대처방안을 강구하는데 있다. 이를 위해 경기도내 학생(고등학교 2·3학년 , 대학교 1학년) 210명을 대상으로 4월 2일부터 5일까지 4일 동안 설문조사를 실시한 결과 86.0%가 군 입대 전후 스트레스와 관심사항을 가지고 있는 것으로 나타났다. 설문결과로써 먼저 군 입대전 스트레스 및 관심사항으로 군 입대시기 및 복무할 군 결정, 군 관련 정보획득 방법, 군 입대후 같이 생활하게 될 전우 및 근무지역, 군 복무후 복학 및 진로선택 등 이었으며, 군 입대후 스트레스 및 관심사항은 강인한 교육훈련에 요구되는 체력수준, 통제된 군 생활에 대한 적응 여부, 능력을 초과하는 임무 및 과업, 병영내 안전사고 및 저변문제 발생 여부, 같이 복무하는 전우들과의 융합, 자격증 취득 및 군 복무후 주어지는 혜택 등 이다. 이에 대한 대처방안으로 먼저, 개인적 측면에서는 군 생활에 필요한 체력 및 적응력 구비, 스트레스 대처능력 및 친화력 배양, 군 입대 시기 및 복무 할 군을 조기에 결정후 집중준비를 하는 것이며, 사회적으로는 군 관련 정보제공 시스템의 개선, 유관기관별 군 관련사항 적극 홍보, 대학 내 군 관련 상담능력 구비, 군 관련 소개책자 제작 배포의 필요성 등이다. 본 연구를 통하여 군 입대를 앞둔 후기청소년들이 군 입대전후 필요로 하는 제반 사항을 군 입대전 조기에 확인 준비함으로써 군 입대 준비 및 군 생활 적응에 기여할 것으로 기대된다. This research aims to provide coping strategies, both in individual and social level (state, military and university scale) to deal with stress and to satisfy interests that late adolescence have before and after their mandatory military service. To do so, a survey was conducted over 210 students in Gyeonggi province. The result showed that the majority were distressed in anticipation of communal lifestyle in military. It also indicated their interests lie in obtaining practical certificates and benefits they will be given after their military service. The result also showed that they were generally unfamiliar with the military; It allowed to confirm the need to supplement access to learning about the military. As to coping strategies in individual level, individuals should choose for themselves a unit they want to serve in order to prepare in advance to adjust to communal lifestyle along with physical and cognitive capacities. Furthermore, in social level, it is imperative to improve access to information regarding life in the military prior to one’s conscription; to secure professional military counselors within campus; to make sure entities including the state, military and university intertwine with one another for more active information share. By doing so, late adolescence can prepare in advance, which is expected to greatly help their initial adjustments to military life.

몽골 불교유적 답사기

정명호(Myung Ho Jung) 동국대학교 불교문화연구원 1992 佛敎學報 Vol.- No.29

중국석등의 (中國石燈) 새로운 자료

정명호(Myung Ho Jung) 동국대학교 불교문화연구원 1997 佛敎學報 Vol.- No.34

u-Defense를 위한 유비쿼터스 기술 동향

정명호(Jung Myung Ho),김영조(Kim Young Jo),유승화(Yoo Seung Wha),노병희(Roh Byeong Hee),김기형(Kim Ki Hyung) 한국통신학회 2006 한국통신학회 학술대회논문집 Vol.2006 No.7

인터넷 부동산 정보 제공자 주민참여와의 관계에 관한 연구

정명호(Myung-Ho Jung),주용진(Yong-Jin Joo),김태호(Tae-Ho Kim),김영일(Young-Il Kim) 대한토목학회 2011 대한토목학회지 Vol.59 No.6

긴 스텐트는 관상동맥 스텐트 재협착의 유일한 예측 인자

정명호(Myung Ho Jeong),조정관(Jeong Gwan Cho),강정채(Jung Chaee Kang),이승현(Seung Hyun Lee),홍영준(Young Joon Hong),박옥영(Ok Young Park),정우곤(Woo Kon Jung),이상록(Sang Rok Lee),김원(Woen Kim),김계훈(Kye Hun Kim),강경태(Kyung Tae 대한내과학회 2001 대한내과학회지 Vol.60 No.6

N/A Background : Coronary stenting is one of the most effective methods of percutaneous coronary interventions (PCI) in the treatment of intimal dissection and prevention of restenosis after balloon angioplasty. However, coronary stent restenosis still remains a major clinical limitation. Methods : Three hundreds seventy three patients who underwent coronary stent implantations and follow-up coronary aniograms at Chonnam National University Hospital between June 1996 and December 1999, were divided into two groups: 123 patients with restenosis (Group A: 98 male, 25 female, 58.5±9.4 year-old) and 240 patients without restenosis (Group B: 193 male, 47 female). Results : The prevalence of clinical diagnosis and risk factors for the atherosclerosis were not different between two groups. The indications for stenting and stent types, reference vessel diameter and minimal luminal diameter before stenting were not different. However, stent length was 23.4±7.57 mm in Group A and 20.8±6.58 mm in Group B, which were longer in Group A than in Group B (p=001). By multiple logistic regression analysis for the independent predictive factors for stent restenosis, the long stent more than 25mm in length was the only significant predictive factor after correction according to age, sex, risk factor, lipid profiles (OR=2.590, 95% C.I.=1.40-4.78). Conclusion : The long coronary stent more than 25 mm in length is a predictive factor of restenosis after coronary stenting.(Korean J Med 60:529-536, 2001)

항구포자충제제의 사용 여부에 따른 구포자충 감염실태 조사

허정호 ( Jung Ho Heo ),정명호 ( Myung Ho Jung ),김국헌 ( Kuk Hun Kim ),조명희 ( Myung Heui Cho ),이국천 ( Kuk Cheon Lee ),서종립 ( Jong Lip Seo ),김충희 ( Chung Hui Kim ),하대식 ( Dae Sik Hah ),류재두 ( Jae Doo Ryu ),김곤섭 ( Gon 한국가축위생학회 2005 韓國家畜衛生學會誌 Vol.28 No.3

The present study was conducted to investigate the prevalence of Eimeria infection according to anti-coccidiosis drugs treatment in 1,300 slaughtered chickens from 130 farms in Gyeongnam, Jeonnam, Jeonbuk, Gyeongbuk and Chungnam during the period from October 2002 to August 2003. The prevalence of Eimeria infection by drug administration for treatment and prevention or non-administration was shown 71.4%, 82.6% and 72.3%, respectively, and so infection rate of chicken farms was similar independent on drug administration or not. The prevalence of Oocysts infection level of chicken farms by administrated drug for treatment was shown lower (25.3%) than for prevention (35.4%) and non-treatment (36.2%). The prevalence of Oocysts infection level by drug administration under 2 days for treatment was shown higher infection rate (32.2%) than over 3 days (20%) and also under 2 days for prevention has similar tendency of that of treatment and so, it was conclusion that administration of drug over 3 days has the effect for treatment and prevention of Eimeria infection. The prevalence of Oocysts infection level by age for prevention has various level from 48.8% to 22.9% but on 22~25 days was shown the most higher ratio (48.8%) and on 19∼21 days was shown the lowest rate (22.9%) among the all age groups.

젖소 유방염 관리에 따른 세균 및 체세포수 등급 실태 조사 분속

허정호 ( Jeong Ho Heo ),정명호 ( Myung Ho Jung ),박영호 ( Yeong Ho Park ),조명희 ( Myung Heui Cho ),이주홍 ( Ju Hong Lee ) 한국가축위생학회 1999 韓國家畜衛生學會誌 Vol.21 No.3

1. The number of average milking cows, clinical forms of mastitis, mastitis-developing cows, and cows killed by mastitis a year were 25.7, 1.8(7%), 6.3(26%), and 2.7(10.1%)heads, respectively. The annual grade changes of standard plate counts(SPC) and somatic cell counts(SCC) showed the grade 1A of SPC diminished sharply from April to August, we think it was due to the lack of proper management in farming season and the grade 3 of SCC indirectly influenced increased in huge during August. 2. The average number of parturitions of farms was 2.3, but 50% of below 1 parturition were 22 farms(31%), 50% of above 3 parturitions were 16(23%) out of 71 farms. According to grades of the number of parturitions of milking cows per each farm, the farms` grades recording 3 parturitions and 50% were little bit excellent. 3. The actual situation research of foremilking CMT revealed 35 out of 74 farmers didn`t do CMT. Among them(35 out of 74 farmers), 80% did not test thanks to the troublesome process of the CMT. SCC grade 3, among farms who did foremilking CMT once or twice a month and who did not were 29% and 40% respectively and SPC grade 1A were 55% and 9%, respectively. 4. The research of actual situation on milking management let us know 29 farm s(39%) did not do lastmilking, 37 farms(49%) usually did overmilking, and 34 farms(46%) did milking for 4 or 5 minutes. Grades according to average requiring times of milking showed SCC grade 1 of farms milking within 7 minutes was 11% and SPC grade 1A was 34%, on the other side, farms milking more than 7 minutes were 0% in SCC grade 1 and 13% in SPC grade 1A. Grades according to the starting time of milking after rubbing teats showed SPC grade 1A of farms starting milking at about 1 minute and over 2 minutes were 50% and 20%, respectively. 5. The research of actual situation on hygienic milking management uncovered 65 farms(88%) were using one towel which was used in washing teats and udders to wash more than 3 to 4 cows, and 53 farms(72 %) were using one dried towel to dry udders not for each cow but for more than 3 to 4 cows after washing. Also, on milking turns disclosed 30 farms(40%) were milking cows in the order of incoming without isolation of a dominant group. According to grades of towels used in washing teats and udders, farms using a towel for each cow were 56% and a towel for over 3 cows were 31% in SPC grade 1A. According to using-or-not grades of dried towels after washing udders, farms using a towel for each cow were 79% and a towel for over 3 cows were 21% in SPC grade 1A. 6. Farms doing teat-dipping before milking were 7(10%), not doing teat-dipping after milking, or doing sometimes were 9(12%), and doing right after milking were 57(77%). And farms doing teat-dipping after dry cows and before delivery were 21(28%). Farms using bethadine as an antiseptic solution were 70(95%), 40 farms(59%) diluted it with water as weak as 5 to 10 times, and on drying cows 64 farms(87%) slowly did it more than 2 days. Grade 1A of SPC of farms doing teat-dipping at every milking was 38%, farms doing occasionally or not was 33%, and farms doing it right after milking was 37% and doing after milking more than 5 cows was 20%. Grade 1A of SPC among farms diluting bethadine 5 times and diluting 5 to 10 times with water were 36% and 33%, respectively, and Grade 3 of SCC were 35% and 32%, respectively. 7. Studies on nonlactating period medical treatment, as the cows were on dry, 54 farms treated with their own hands. 73 farms(98%) had bovine mastitis treated for themselves. And on applying medicines against mastitis, 55 farmers chose them on the basis of their own experience, 42 farms(57%) were treated more than 3 days. 41 farms(55%) dumped away the mastitis infected milk separately, 24 farms(32 %) were feeding and milking at the same time. 8. Fifty-six farms(76%) always washed and disinfected milking machines after milking. Farms using the milking machines at low, or variable vacuum pressures, or at the vacuum pressure, set at the moment of its installation were 31(42%), and farms that did not know pulsation ratio were 27(37%). Farms changing liners when they were torn 8(11%), 58 farms(78%) said they checked milking system when there were wrong with them, 31 farms(42%) changed milking hoses when they found out problems, and 42 farms(57%) cleaned vacuum and milking systems when they felt dirty. The SPC grade 1A of farms washing and sterilizing milking machines was 38% and farms only washing was 28%.

헤파린 부착 관상동맥 스텐트의 스텐트 재협착 예방에 대한 효과

강정채(Jung Chaee Kang),박창수(Chang Soo Park),정명호(Myung Ho Jeong),조장현(Jang Hyun Cho),김성희(Sung Hee Kim),안영근(Young Keun Ahn),박주형(Joo Hyung Park),조정관(Jeong Gwan Cho),박종춘(Jong Chun Park),정상우(Sang Woo Juhng),김준 대한내과학회 1999 대한내과학회지 Vol.57 No.1

N/A The coronary stent reduces acute coronary arterial occlusion and late restenosis during and after coronary intervention. However, stent thrombosis and restenosis are still major limitations in widespread use of coronary stent. Local drug delivery with use of heparin-coated stent will be a new approach reducing the incidence of stent thrombosis and restenosis. In order to evaluate the effects of heparin-coated stent on stent restenosis, heparin-coated stents were compared with control stents in a porcine coronary stent restenosis model. Methods : Stent overdilation injury (stent:artery= 1.3:1.0) was performed with bare Wiktor (Group I, n=10) and heparin-coated Wiktor (Group II, n=20) stents (HEPAMEDTM, Medtronics, U.S.A.) in porcine coronary arteries. Follow-up quantitative coronary angiography (QCA) was performed at 4 weeks after stenting and histopathologic assessments of stented porcine coronary arteries were compared in both groups. Results : 1) On QCA, percent diameter stenosis was significantly higher in Group I than in Group II (16.3±6.62% vs. 9.6±5.06%, p<0.05). 2) Injury score of stented porcine coronary artery was not different in both groups (1.26±0.23 vs. 1.20±0.22). 3) Pathologic area stenosis of stented artery was higher in Group I than in Group II (41.6±12.5% vs. 27.1±9.9%, p<0.005). 4) Neointimal area was higher in Group I than in Group II (4.58±1.41 mm2 vs. 2.57±1.07 mm2, p<0.05). 5) By immunohistochemistry, proliferating cell nuclear antigen (PCNA) index was higher in Group I compared with in Group II (11.2±6.75% vs. 6.3±4.14%, p<0.05). Conclusions : Heparin-coated stent is effective in the prevention of late coronary stent restenosis in a porcine coronary stent restenosis model, which may be related with the inhibition of neointimal cell proliferation.