京畿道의 植物相 : 태화산, 화야산, 대부도, 칠현산, 철마산, 검단산

崔道烈,張珍成,金正猷,全正壹,金輝,閔雄基,姜佑昌 서울대학교 수목원 2001 서울大學校 樹木園 硏究報告 Vol.- No.21

This study was conducted in order to explore general flora of the Gyounggi-do Province and to clarify the distribution of some specificated taxa of the Korea. Daebu-do Island, Mt. Taewha, Mt. Hwaya, Mt. Gumdan, Mt. Chilhyun and Mt. Chulma among eighth grade-area of the Degree of Green Naturality (DGN) within the boundary of the Gyounggi-do Province were visited to investigate local flora. The number of identified vascular plant species were as follow; Mt. Hwaya: 120 species (99 genera of 67 families), Mt. Teawha: 132 species (103 genera of 56 families), Daebu-do Island: 124 species (103 genera of 50 families), Mt. Chulma: 129 species (99 genera of 67 families), Mt. Gumdan: 121 species (96 genera of 52 families), Mt. Chilyun: 90 species (74 genera of 42 families). The endemic Clematis brachyura Maxim. was found to distribute Daeby-do. It seemed that plantation was occupying large area in forest of the Gyounggi-do Province. Forty two specificated taxa were identified and 3 taxa, 10 taxa, 5 taxa, and 24 taxa were sorted into forth grade, third grade, second grade, and first grade respectively. Mt. Taewha showed the highest record (16 taxa) in the number of specificated taxa, Mt. Hwaya was the next with 13 taxa. Mt, Chulma (12 taxa), Mt. Gumdan (11 taxa), Daebu-do Island (7 taxi), and Mt, Chylma (4 taxi) followed. Mt. Taewa and Mt. Whaya were found to be relatively higher in the score calculated front the specificated taxa distribution, while Daebu-do Island and Mt. Chilyun were lower, that difference was probably due in part to consequences of severe disturbance of human activities. With respect to the consequences of severe disturbance of human activities. With respect to the geographical proximity to the Gangwon Province, Mt. Hwaya showed higher similarity of the species composition to that of the Mt. Jumbong.

소형민수헬기 능동진동제어시스템 개발

김남조(Nam-Jo Kim),곽동일(Dong-Il Kwak),강우람(Woo-Ram Kang),황유상(Yoo-Sang Hwang),김도형(Do-Hyung Kim),김찬동(Chan-Dong Kim),이기진(Ki-Jin Lee),소희섭(Hee-Soup So) 한국항공우주학회 2022 韓國航空宇宙學會誌 Vol.50 No.3

헬기의 능동진동제어시스템(AVCS)은 주로터로부터 발생되는 진동을 제어하며, 수동형 진동저감장치 대비 저중량으로 우수한 진동저감 성능을 발휘한다. 본 논문에서는 FxLMS 알고리즘을 기반으로 타코미터 및 가속도 센서 신호를 통해 연산된 제어명령을 하중발생기(CFG)로 전달하여 소형 민수헬기의 진동을 제어하는 소프트웨어 개발 및 검증 내용을 제시하였다. DO-178C /DO-331 표준에 따라 모델 기반 설계 기법을 통해 진동제어 소프트웨어를 개발하였으며, PILS 및 HILS 환경에서 실시간 작동 성능을 평가하였다. 특히, PILS 환경에서는 LDRA 기반 검증 커버리지를 통해 소프트웨어의 신뢰성을 향상시켰다. AVCS를 소형민수헬기에 적용하기 위해 지상/비행시험을 통해 대상 헬기 동적응답특성 모델을 획득하였다. 이를 기반으로 시스템 최적화 분석 및 비행시험을 통해 최적 성능을 발휘하는 AVCS 형상을 결정하고, STC 인증을 획득하였다. Active vibration control system(AVCS) for helicopter enables to control the vibration generated from the main rotor and has the superb vibration reduction performance with low weight compared passive vibration reduction device. In this paper, FxLMS algorithm-based vibration control software of the light civil helicopter tansmits the control command calculated using the signals of the tachometer and accelerometers to the circular force generator(CFG) is developed and verified. According to the RTCA DO-178C/DO-331, the vibration control software is developed through the model based design technique, and real-time operation performance is evaluated in PILS(processor in-the loop simulation) and HILS(hardware in-the loop simulation) environments. In particular, the reliability of the software is improved through the LDRA-based verification coverage in the PIL environments. In order to AVCS to light civil helicopter(LCH), the dynamic response characteristic model is obtained through the ground/flight tests. AVCS configuration which exhibits the optimal performance is determined using system optimization analysis and flight test and obtain STC certification.

Ki-67 Expression Gives Additional Prognostic Information on St. Gallen 2007 and Adjuvant! Online Risk Categories in Early Breast Cancer

Jung, So-Youn,Han, Wonshik,Lee, Jong Won,Ko, Eunyoung,Kim, Eunkyu,Yu, Jong-Han,Moon, Hyeong-Gon,Park, In Ae,Oh, Do-Youn,Im, Seock-Ah,Kim, Tae-You,Hwang, Ki-Tae,Kim, Sung-Won,Noh, Dong-Young Springer - Society of Surgical Oncology 2009 Annals of Surgical Oncology Vol.16 No.5

定着村癩患者의 再發實態에 關한 調査硏究

金道一,高英勳,金潤元,李惠映,金學鵬,金起會 大韓癩學會 1982 癩學 會誌 Vol.15 No.1

알루미늄 합금과 고장력 강판 접합을 위한 헬리컬 SPR의 단조공정 설계

김원영, 김동범, 김기호, 김도훈, 이인환, 조해용 충북대학교 산업과학기술연구소 2013 산업과학기술연구 논문집 Vol.27 No.2

A self-piercing rivet(SPR) is a mechanical component for joining dissimilar materials. It is used for joining dissimilar material sheets such as aluminum alloy and steel. The self-piercing rivet directly pierces into sheets without drilling sheets beforehand unlike conventional rivets. However, the self-piercing rivet occurs buckling when piercing high strength steel. Therefore, a helical SPR which can pierce high strength steel sheet was designed. In this study, forging process was designed for manufacturing the helical SPR and simulated by using commercial FEM code DEFORM-3D. In the simulation of forging process for manufacturing rivet, process sequence, formability, forging load were investigated. The suitable forging process could be designed by comparisons of simulated results. Experimental trials have been carried out for same conditions as simulated ones. The simulated results agreed with the experimental ones. So, the analytic approach in this thesis is useful to save cost and time in the forging industry

불응성 자가면역질환에서의 자가조혈모세포이식

민도준,양동원,민창기,김완욱,이상헌,박성환,김동욱,이종욱,조철수,민우성,김범생,김호연,김춘추 대한조혈모세포이식학회 2001 대한조혈모세포이식학회지 Vol.6 No.1

배경: 기존의 치료에 불응하고 예후가 불량한 자가면역질환 환자들에게 최근 고용량 면역억제 및 조혈모 세포이식이 새로운 치료방법으로 대두되고 있다. 저자들은 다발성 경화증(multiple sclerosis, MS) 및 류마티스 관절염(rheumatoid arthritis, RA) 등 2명의 자가면역질환 환자들에서 자가조혈모세포 이식을 시행하였다. 방법: 말초혈액 조혈모세포 가동화를 위하여 cyclophosphamide (4 g/㎡) 및 granulocyte colony stimulating factor (10 g/kg/day)를 투여하였고, CD34+ 세포를 분리·채집 하였다, 이식 전처치로 MS 환자에서 BEAM 및 antihymocyte globulin (ATG) (3.75 mg/kg), RA 환자에서 fludarabine (180 mg/㎡), ATG (10 mg/kg)와 busulfan (8 mg/kg)을 투여하였다. 결과: 호중구 수가 500/㎕ 이상으로 회복되는 기간은 MS 환자에서 9일, RA 환자에서 15일이었다. 혈소판이 20.000/㎕ 이상으로 회복되는 가간은 RA 환자에서 9일 이었고, MS 환자에서는 혈소판 감소증이 발생하지 않았다. 비혈액학적 독성으로 MS 환자에서 WHO 1도의 오심 및 점막염이 관찰되었다. MS 환자는 이식 6개월 후까지 시력감소가 남아있었으나, 이식전에 관찰되던 감각이상 및 운동장애 등의 신경학적 이상 소견은 더 이상 관찰되지 않았다. RA 환자는 이식 1개월 후 관절 증상 및 검사소견의 호전을 보였다. 결론: 불응성 자가면역질환 환자에서 고용량 면역억제 및 조혈모세포이식은 적은 독성으로 높은 치료효과를 기대할수 있으며, 향후 이 시술의 임상적 의의를 규명하기 위하여 전향적이고 장기적인 연구가 필요할 것으로 사료된다. Background: High-dose immunosuppressive therapy followed by autologous hemathpoietic stem cell transplantation (HSCT) has been proposed as a new approach to treat severe, refractory autoimmune diseases. We describe two patients with refractory autoimmune diseases (one multiple sclerosis 〔MS〕and one rheumatoid arthritis〔RA〕) who underwent T-cell-depleted autologous peripheral bleed stem cell transplantation for the first time in Korea. Methods: We mobilized autologous stem cells with cyclophisphamide (4 g/㎡) and granulocyte colony-stimulating factor (10 ㎍/kg/day). Stem cells were enriched ex vivo using CD34-positive immunoselection and reinfused after high-dose chemotherapy with BEAM and antithymocyte globulin (ATG) (3.75 mg/kg) in MS, or fludarabine (180 mg/㎡), ATG (10 mg/kg) and busulfan (8 mg/kg) in RA. Results: The engraftment with an absolute nerutrophil count greater than 500㎕ occurred on day 9 in MS and 15 in RA, respectively. The time to nontransfused platelet count greater than 2.000/㎕ was 9 day in RA. MS patient did not show ant episode of thrombocytopenia. Regimen-related non-hematopoietic toxicity was minimal. For 6 months since HSCT, them patient with MS had been free from previously existed sensory and motor abnormalities except decreased visual acuity. Then patient with RA and only one tender joint and two mildly swollen joints with improvement in laboratory parameters at one month after HSCT. Conclusion: These results underscore the feasibility and potential efficacy of intensive immunosuppression followed by autologous HSCT for treatment of intractable autoimmune diseases. The durability of remission, however, remains to be clarified.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

스마트폰 부재와 분실을 대비한 어플리케이션

조시현;문상수;김기환;도민균;서재현;김태공 인제대학교 2012 仁濟論叢 Vol.27 No.1

Recently, as the Smart Phone is rapidly disseminated worldwide, it is emerging as an important digital communication media changing the communication types of users. We use the Smart Phone in all aspect of daily life besides communication. The Smart Phone is indispensible tool that has a great ripple effect on our daily life. Therefore, if the Smart Phone users lose or do not bring their phones, they were troubled. In this paper, we make users available to use the Smart Phone, even if they lose or do not bring their phones. To do this end, we develop features that search the phone in case of not knowing where it is, that contact another phone in case of not bringing their phone, that lock the phone in case of losing it. We expect these features promote a expansion and a vitality of the Smart Phone market.

세척수 오존 처리에 의한 신선 채소류의 미생물 제어

김동주,윤유영,하상도,박기환 中央大學校 食糧資源硏究所 2003 食糧資源硏究所 論文集 Vol.15 No.1

오존은 염소보다 1.5배나 강한 산화제이고 염소나 다른 소독제에 비해 여러 종류의 미생물에 대해 살균 효과를 가지고 있다. 본 연구는 신선채소류로부터 인체에 유해한 병원균 등 미생물 오염을 감소시키거나 제거하여 최소가공 신선 과채류의 안전성을 향상시킬 수 있는 효과적인 조건을 찾고자 하였다. 상추, 깻잎, 당근, 고구마의 오존의 미생물 제어 효과를 평가하기 위해 세척 시간에 따 른 일반세균, Bacillus cereus,대장균 및 대 장균군, 포자형성균의 변화를 관찰하였다. 상추는 총호기성균이 6.32 log CFU/g, coliform은 3.36 log CFU/g 그리고 포자 형성균은 2.92 log CFU/g 검출되었다. 깻잎은 총호기성균이 5.36 log CFU/g, coliform은 3.88 log CFU/g 그리고 포자 형성균은 2.62 log CFU/g 검출되었다. 당근은 총호기성균이 7.34 log CFU/g, coliform은 3.49 log CFU/g 그리고 포자 형성균은 3.57 log CFU/g 검출되었다. 고구마는 총호기성균이 7.82 log CFU/g, coliform은 3.15 log CFU/g 그리고 포자형 성균은 3.30 log CFU/g 검출되었다. E. coli와 B. cereus는 모든 시료에서 불검출 되었다(검출한계: <10 cells/g). 미생물수는 세척시간에 따라 3분까지는 감소하였고, 그 이후에는 거의 변화가 없었다. 오존 처리에 의한 총호기성균의 살균효과는 상추의 경우 약 3 log, 깻잎은 약 2 log, 당근은 약 3 log 그리고 고구마는 약 2 log 감소하였다. coliforms은 모든 시료에서 약 2 log 감소 하는 것으로 나타났다. 포자형성균은 1분 이상의 세척 처리 후에는 불검출되는 것으로 나타났다. 이들 결과는 오존이 신선채소류의 미생물, 특히 포자형성균을 효과적으로 제어할 수 있음을 제시함으로서, 신선채소류 처리에 있어 오존이 기존 살균 소독제를 대신하여 사용될 수 있음을 보여주고 있다. Ozone is an oxidizing agent, which is 1.5 times stronger than chlorine and is effective over a much wider spectrum of microorganisms than chlorine and other disinfectants. The objective of this study was to propose an effective condition to improve the safety of fresh vegetables, which could reduce and eliminate human pathogens from fresh products. Microbial contamination levels in fresh vegetables such as lettuce, sesame leaf, carrot and sweet potato were evaluated and the variation of microorganisms was observed during washing in order to evaluate the effect of ozone on the control of microorganisms in fresh vegetables with time. Target microorganisms were APC, B. cereus, coliforms, E. coli and spore-forming microorganisms. The results of the total cell count of general microbes were in the range of 5.36 (sesame leaf) - 7.82 (sweet potato), coliforms 3.15 (sweet potato) - 3.88 (sesame leaf) and spore-forming group was 2.62 (sesame leaf) - 3.57 (carrot) log CFU/g while E. coli and B. cereus were not detected at the detection limit (<10<윗첨자>1</윗첨자>) in raw materials. The number of microorganisms were reduced with treatment time to 3 mins in the magnitude of 2-3 log reduction and little changed to 5 mins. About 3 log reduction of general microbes was achieved in lettuce, 2 log in sesame leaf, 3 log in carrot and 2 log in sweet potato. Coliforms were reduced about 2 log in tested samples. Ozone was found to be very effective to eliminate the spore-forming group from fresh vegetables, which was not detected after 1 min treatment. These results suggest that the ozone is effective to reduce microorganisms from fresh vegetables, especially very effective on the spore-forming microorganisms and thus could be used as an alternative to traditional sanitizers for fresh produce.

반회분 공정에 의한 실리카 미립자의 생성

김희택,김기도 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1

기존의 회분식 반응을 통한 실리카 미립자 생성의 한계성을 극복하기 위하여 반회분 공정을 이용하여 Ethyl Silicate(TEOS)의 가수분해 로부터 실리카 미립자를 제조 하였다. 그 결과 생성된 실리카 미립자는 반회분 공정에 의한 경우가 회분식 반응에 의한 것보다 단분산도, 입경, packing, 구형, 수율면 등에서 더 좋은 결과를 나타내었다. 특히, 수 미크론의 입자 크기를 갖는 단분산 실리카 미립자를 제조 하기에는 반회분 공정이 매우 효과적인 방법임을 알 수 있었다. Silica fine particles were produced from the hydrolysis of Si(OC2H5)4 by using semi-batch process in order to overcome difficulties for a production of fine particles by a batchwise reaction. The SiO2 fine particles obtained using semi-batch process were better than those using batch process in size distribution, packing, mean size, yield, and sphericity. Especially, it was found that semi-batch process was a successful method of controlling the size, i.e., a narrow distribution of a particle size which ranges to several microns.