http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정홍성(Hong Seong Jeong),양준모(Joon Mo Yang) 대한피부과학회 1986 大韓皮膚科學會誌 Vol.24 No.6
This study was undertaken to investigate to compare the ratio of positive reactions to benzoic acid(BA), sorbic acid(SA) and cinnamic acid(CA) which are well known materials producing non-immunologic contact urticaria. Various concentrations(0.l% to 5%) and different vehicles(petrolatum, water, hydrophilic ointment base) were used in open and 20 minutes closed test using Finn chamber on Scanpor tape. One hundred total subjects were consisted of nonallergic patients and normal persons. The results were as follows ; 1. Total numbers of positive reactions were 69 in closed test(CT) and 60 in open test(OT), regardless of the materials and vehicles. 2. Total riumbers of positive reactions in BA, SA and CA were 68, 31, 35 in CT and 59, 20, 14 in OT respectably. 3. CT showed much more positive reactions than OT with all materials tested except 0.l% SA in water. 4. Hydrophilic ointment base showed a better reactivity than any other vehicles in CT. But in OT, petrolatum, water, hydrophilic ointment base showed better reactivity in BA, SA, CA respectably. 5. Almost all the reactions appeared within 45 minutes and disappeared within 3 hours. Erythema preceded edema and persisted 30 minutes to 1 hour after dissappearance of edema. 6 Itching, burning and tingling sensation were the only symptoms observed except. localized erythema and edema.
정홍성(Hong Seong Jeong),유철호(Chul Ho Yoo),변대규(Dae Gyoo Byun),양준모(Joon Mo Yang),이유신(Yu Sin Lee) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.6
We report a case of Becker's nevus associated with smooth muscle hamartoma, in a 21-year-old male patient, which shows clinically match-head sized, flat topped, round to oval, grouped papules with hairs on the outer surface of the right arm, and microscopically reveals numerous bundles of smooth muscle fiber in the dermis.
정홍성(Hong Seong Jeong),김선훈(Seon Hoon Kim),이유신(Yoo Shin Lee) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.4
Congenital smooth musele hamartomas appear at birth as hypertrichotic patches or plaques with or without hyperpigmentation. Histologic characteristic is hyperplasia of dermal smooth muscle bundles. We report a case of congenital smooth muscle harnartoma in 5-year-old female, who showed localized excessive-hairy, skin-colored patch on the lateral surface of left. elbow, which were found at birth. Biopsy specimen showed hyperpigmentation of the basal layers of epidermis, melanophages in upper dermis, and hyperplasia of smooth muscle bundles in lower dermis.
홍성갑,정용태,천경호,백순영,Hong, Seong-Gap,Jeong, Yong-Tae,Cheon, Gyeong-Ho,Baek, Sun-Yeong 한국미생물학회 2003 미생물학회지 Vol.39 No.4
본 연구에서는 에어컨 내에서 서식하는 세균을 분리하여 동정하였고 이들 에어컨에 대한 위생 관리에 대하여 조사하였다. 20개의 에어컨 냉각기에서 8종의 세균이 분리, 동정되었는데 그것들은 가장 많이 분리 동정된 Pantoea sp.를 비롯하여 Bacillus circulans, Bacillus pumilus, Corynebacterium, Flavimonas oryzihabitans, Ochrobacterum anthropi, Micrococcus sp., non fermented bacilli (NFB)이었다. 한편 에어컨 사용자 1,322명을 대상으로 에어컨의 위생관리 상태에 대하여 조사하였는데 설문자의 1,138명(86%)이 에어컨 사용시 환기를 하는 것으로 나타났다. 에어컨 청소에 있어서 1,128명(85%)이 청소를 하는 것으로 나타났지만 에어컨의 오염원들이 되는 에어컨의 필터 청소는 864명(66%)이 하지 않는 것으로 나타났고 에어컨의 열교환기는 1089명(82%)이 하지 않는 것으로 나타났다. 이런 결과로 상기에서 언급된 세균들과 같은 에어컨 오염원이 증가하면 호흡기 질환과 같은 인간의 질병을 초래할 수 있다는 것을 알 수 있었고 따라서 에어컨 사용시 에어컨의 오염원제거와 위생관리는 에어컨내 세균으로부터 발생되는 인간의 질병을 예방할 수 있을 것이다. This study was performed to identify the microorganisms from air conditioners and to investigate hygiene management on air conditioners. Eight species of bacteria were isolated and identified from twenty samples of coolers in air conditioners; Pantoea sp., Bacillus circulans, Bacillus pumilus, Corynebacterium, Flavimonas oryzihabitans, Ochrobacterum anthropi, Micrococcus sp., and non fermented bacilli (NFB). One thousand and three hundreds twenty-two persons who used air conditioners in their houses were investigated about the state of hygiene management in their air conditioners. One thousand and one hundred thirty eight persons (86%) of the total investigated persons ventilated their air conditioners and 1,128 persons (85%) of them cleaned their air conditioners. However, 864 persons (66%) of them did not clean filters and 1,089 persons (82%) did not clean the heat exchangers, both of which air conditioners could be easily contaminated by microorganisms. From these results, we could conclude that the contaminants, bacteria as mentioned the above, in air conditioners could cause human disease such as respiratory infections if the number of bacteria increase in air conditioners. Thus, the removal of contaminants and the improved hygiene of the air conditioners can prevent human diseases caused by the released bacteria during the use of air conditioners.
박경찬(Kyoung Chan Park),정홍성(Hong Seong Jeong),이증훈(Jeung Hoon Lee),윤근철(Kun Chul Yoon) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.5
We observed a case of sebaceous epithelioma associated with a nevus sebaceus in a 25-year-old male. The tumor was bean-sized, dome-shaped nodule on the slightly yellowish plaque of nevus sebaceus. Histopathological finding shows undifferentiated cells which are arranged in a palisade fashion at the periphery of a cell mass and a fairly large number of transitional cells and groups of mature sebaeeous cells.
Pre-strain과 sensor extending을 활용한 미소 변형에서 높은 민감도를 갖는 변형 센서 제작
Hyun Suk Jung(정현석),Chan Park(박찬),Hyun Woo Lee(이현우),Seong Uk Hong(홍성욱),Hyong Uk Kim(김형욱),Cheol Jeong Park(박철정),Seong Kyung Hong(홍성경),Seong Jin Cho(조성진) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Measuring pulse wave technology has received great attention because it indicates the status of the heart and blood vessels. For measuring precise pulse wave, high sensitivity (gauge factor〉500) at low deformation (〈1% strain) and repeatability are necessary. Because a pulse of blood causes micro-scale deformation of skin, high sensitivity sensor is required to measure the small deformation. However, other studies are low sensitivity under 1% strain and poor hysteresis that makes unreliable repeatability. Here, we fabricated a crack-based strain sensor that has high sensitivity (Gauge Factor〉2,000) at low strain (〈1% strain) with pre-strain (P.S) and sensor extending (S.E) process. We can also control sensitivity and linearity through P.S and S.E as needs.
자외선 차단 코팅을 위한 나노섬유 멤브레인 및 휴대용 전기방사 시스템 개발
이현우(Hyunwoo Lee),홍성욱(Sunguk Hong),박찬(Chan Park),정현석(Hyunsuk Jung),김형욱(Hyonguk Kim),박철정(Cheol Jeong Park),홍성경(Seong Kyung Hong),조성진(Seong J. Cho) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
As the harmfulness of ultraviolet(UV) rays is widely known, it has become important to protect the skin from ultraviolet rays. However, current sunscreens have the disadvantages of promoting skin disorders due to chemical composition, and short duration. Here, we introduce a novel portable electrospinning system that can coat UV-blocking nanofibrous membrane. Conventional electrospinning systems are not portable, as they include a high voltage power supply(HVPS) that is large in size, heavy in weight, expensive and has a wired power supply. To overcome these limitations, we replaces HVPS with batteries and high-voltage amplifiers. Nanofibers contain nanoparticles to increase the UV blocking effect. In addition, we confirmed UV transmittance, water resistance, and removal test. Unlike conventional sunscreen agents, nanofiber-based sunscreen is expected to be very useful for organ transplant patients or skin disease patients who are vulnerable to UV rays.
박나영 ( Na-young Park ),최순군 ( Soon-kun Choi ),김민경 ( Min-kyeong Kim ),정재학 ( Jaehak Jeong ),최동호 ( Dongho Choi ),홍성창 ( Seong-chang Hong ),엽소진 ( Sojin Yeob ),허승오 ( Seung-oh Hur ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-
국내에서 논 재배면적은 전체 농경지 면적의 55%를 차지하고 있으며 이는 전 국토의 11%에 해당한다. 논은 재배기간 동안(5~10월) 대부분 담수생태계를 유지하며 7~8월 중 2주간 벼의 유효분얼을 위해 중간낙수(물떼기)를 한다. Agricultural Policy/Environmental eXtender (APEX) 모델은 농업활동이 농경지 토양 및 하류수계에 미치는 영향을 평가하는 모델로서 US EPA (United States Environmental Protection Agency)의 지원을 받아 작성되었다. 그러나 APEX 모델은 논에서의 농업활동과 논의 물리적 특성을 반영하지 못한다. 농촌진흥청과 Texas A&M은 국제공동연구를 통해 APEX 모델 내 논 모듈(써레질, 담수관개, 이앙 등)을 추가하여 APEX-paddy 모델을 개발하였다. 본 연구에서는 APEX-paddy 모델을 이용하여 환경보전 농업에 따른 논 질소부하량의 변화를 모의 하였다. 분석기간은 향후 기후변화 영향평가를 수행하기 위하여 GCMs (General Circulation Model)의 기준인 1976년~2005년으로 설정하였다. 논의 환경보전 농법으로서 유출구 물꼬 높이 조절과 시비량 조절 시나리오를 적용하였다. 물꼬 높이를 중간낙수 이후 관행 80 mm에서 150 mm로 높여 빗물을 최대한 이용할 경우 배수량은 약 14.0%가 감소하는 것으로 나타났으며 이에 따라 질소부하량이 약 3.3%가 감소하는 것으로 나타났다. 빗물 이용량이 증가함에 따라 관개요구량은 약 9.3%가 감소하는 것으로 모의되었다. 질소비료 시비량을 관행 110 kg-N/ha에서 최고품질 벼생산 기준인 70 kg-N/ha로 줄일 경우 관개량과 배수량은 변화가 없으나 질소부하량이 33.9%가 감소하는 것으로 나타났다. 한편, 논벼 생산량은 10.8%가 감소하는 것으로 모의되었다.