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Sol - Gel 법으로 제작한 PbTiO3-PbZrO3-Pb(Ni1/3Nb2/3)O3 압전박막의 특성
윤화중,임무열,구경완 ( Wha Joong Yoon,Moon Yeol Lim,Kyung Wan Koo ) 한국센서학회 1995 센서학회지 Vol.4 No.4
In order to fabricate the piezoelectric thin film of the PZT-PNN ternary compound, the metal alkoxides were used as starting materials. The electrical and crystalline properties of the thin film were evaluated. The X-RD study shows that the crystallization of the film is optimized at 550℃ of sintering temperature. According to the D-E hysterisis curve, the coercive field is 28.8 kV/cm, and the remanent polariztion is 18.3 μC/㎠. The break down voltages of the thin films are 76.0 ∼ 27.0 MV/m. When the sintering temperature is raised, the break down voltage is lowered. As a result of measuring the C-V characteristic curve of the ternary compound piezoelectric thin film, the relative dielectric constants are 406 for the composition (50:40:10), 1084 for the composition (50:30:20), 723 for the composition (45:35:20) and 316 for the composition (40:40:20).
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윤화중,정길생,Yoon Hwa-Joong,Chung Kil-Saeng 대한수의사회 1983 대한수의사회지 Vol.19 No.7
The authors made a survey on the species and distribution of internal parasites in domesticated deer. Total 75 specimen which collected from Seoul City, Gyeonggi Do, Kangwon Do and Chung-Nam Province were carried out for the actual condition of parasitic
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양기천,이정택,윤화중 제주대학교 1970 논문집 Vol.2 No.-
The authors obtained the following results from the research project they completed in the laboratory, the experimental animal stalls of Cheju college and the south area of Cheju-do. The strains of ticks used in the research were Boophilus microplus and Haemaphysalis bispinosa. The ticks which were present in the south area of Cheju-do seemed to have a resistance to the chlorinated hydrocarbons. The effects of each ixodicide were as folows: Organic phosphorous insecticides were most effective and Carbomates (especially Sevin(0.5%) were effective but not so good as the organic phosphatos. And the chlorinated hydrocarbons were poor in tickicidal. effect, but r-BHC (0.03%) and Dieldrin(0.1%)were better than the other Chlorinated hydrocarbons. Among the Organic phosphates, Dursban (0.03%) and Dipterex(0.1%) were most effective and Asuntol(0.05%) was also effective. In various compounds, MBD(0.1%) (Compound of malathion, r-BHC and DDT), DA(0.1%) (Compoud of Dipterex and Aldrin) and MA(0.1%) (Compoud of Malathion and Aldrin) were most effective. These compounds were much better in tickicidal effect and toxicity than the Organic phosphates and Chlorinated hydrocarbons alone. As a result, the authors now recommend MBD, DA, MA and Dipterex as the most practical ixodicides in this year for Cheju area by reason of their effectiveness, lower cost and low toxicity.
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서울市內一部 動物病院에서 臨床診療된 愛玩犬의 病類別 分布에 對한 醫學統計學的 考察
徐政煜,李元暢,鄭柄鉉,尹和重 건국대학교 동물자원연구센터 1999 動物資源硏究誌 Vol.20 No.-
우리 나라의 소동물 수의임상분야(獸醫臨床分野)에서 주류를 이루고 있는 애완견의 병류별 질병분포를 파약하여 수의임상반야의 기초자료로 제시하고자 시도하고 서울시내 중견 동물병원 5곳을 무작위선택방법에 의하여 선정하여 1993년도부터 1995년도 말까지 3개년간의 임상의료철을 수집, 의학통계학적 방법을 이용 분석 및 관찰한바 몇 자기 결과를 얻어 다음과 같이 적요 한다. 진료과별 진료건수의 분포를 보면, 전체진료건수 8,360건 중에서 내과질환이 53.6%를 점유하고, 외과질환은 13.01%, 비뇨생식기질환1.96%, 피부과질환 15.47%, 안과질환 2.68% 그리고 이(耳)과질환 13.28% 등으로 관찰되었다. 조사 관찰된 내과질환은 총 19종의 질병과 4,481건의 진료건수가 있었으며, 이중에서 위발증(胃發症)이 가장 많아 21.38%를 점유하고 있었고, 외과질환은 성형외과와 정형외과 질환을 포함하여 역시 총 19종의 질병과 1,088건의 진료건수가 있었는데, 이중에서 외상(外傷)이 가장 많아 19.21%, 비뇨 생식기질환은 6종류의 질병과 164건의 진료건수가 있었으며, 그 중에서 비뇨기 감염증이 가장 많아 37.0%를, 피부질환은 5종의 질병에 1,293건의 진료가 있었고, 이중에서 체외기생충의 감염이 37.74% 그리고 안이과(眼耳科)질환은 7종에 1,332건으로 외이염(外耳炎)이 가장 많아 59.49%를 점유하고 있었다. 애완견에서 빈발하는 10대 질환의 분포를 관찰하바, 위염 (11.46%), 위장염(10.28%), 외이염(9.74%), 기관기관지염(8.49%), 대장염(6.41%), 체외기생충증(5.84%), 체내기생충증(4.35%), 이내(耳內) 진드기(3.8%), 피부진균증(3.53%) 및 피지누증 (3.12%) 등의 순으로 관찰되었다. 끝으로 애완견의 전염병으로는 distemper가 44.8%, parvoviral infection 39.37%, coronaviral infection 15.83% 그리고 본조사기간중 서울시내에서의 rabies 발생건수는 전혀 없었다. The purpose of this study was to a retrospective and medical statistical observation on the clinical cases of pet-dogs by veterinary hospital in Seoul City, during the period from 1993 to 1995, which important not only in veterinary clinic but also pet animal health information system development for veterinary practitioner of Korea. The results were summarized as follows: In the clinical cases determined by the international classification of diseases, during the period of three years, 8,358 cases of morbidity of pet-dogs were shown by five veterinary hospital for small animals. Among them, the disease of internal medicine, including medicine, including digestive, respiratory, circulatory, metabolic and parasitosis were 53.6% of total cases, the surgical disease, including orthopedic and plastic surgery were 13.01%, the disease of urogenital was 1.96%, the disease of dermatology was 15.47%, the disease of ophthalmic was 2.68% and the disease of otiatric was 13.28%, respectively. The gastric crisis of 21.38% among 4,481 cases of 19 kinds on the disease of internal medicine showed the highest morbidity. The trauma of 19.21% among 1,088 cases of 19 kinds in the surgery, including orthopedic and plastic surgery, the case of urogenic infection of 37.0% among 164 cases of 6 kinds in the urogenital organe, the ectoparasitosis of 37.24% among 1,293 cases of 5 kinds in the disease of dermatology, the otitis externa of 59.49% among 1,332 cases of 7 kinds n the opthalmatic and otiatric diseases showed the highest morbidity in each part of veterinary clinics. Observation on the morbidity of the main disease of pet-dogs were gastritis (11.46%), gastroenteritis (10.28%), ectoparasitosis (9.64%) including ear-mite, otitis externa (9.47%), trachobronchitis (8.49%), enterocolitis (6.41%), endoparasitosis (4.35%), dermatophytosis (3.53%) and seborrhea (3.12%), respectively. Finally, distributive observation on the incidence case of the main infections disease in pet-dogs which that distemper, parvoviral infection and coronaviral infection were 44.80%, 39.37% and 15.83, respectively.
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사료내 곰팡이 발육 억제제의 효과에 관한 연구 - Mold-X의 효과에 관한 연구 -
윤화중,장경진,김태종,원송대,Yoon Hwa Joong,Chang Kyung Jin,Kim Tae Jong,Won Song Dae 대한수의사회 1982 대한수의사회지 Vol.18 No.7
In the experiments of the inhibition of mold growth from October 1, 1981 to March 31, 1982, Mold-X has been shown the effective results as follows; 1. In the storage of the corn and the corn meal contained $12\%$ moisture, the growth of mold wa 본 연구팀은 1981년 10월 부터 1982년 3월까지 시행한 광범위 곰팡이 발육억제제인 Mold-X의 효과에 관한 시험을 시행한 결과 그 성적을 요약하면 다음과 같다. 1. $12\%$의 수분함량이 함유된 옥수수와 옥수수가루 저장에 있어서의 250ppm수준의 Mold-X가 곰팡이의 발육을 억제하였다. 2 수분이 많이 함유된 배지에서 곰팡이의 발육을 억제할 수 있는 Mold-X의 함량은 500ppm수준이었다.
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