척수손상후 운동 유발전위와 지각 유발전위의 비교

지철,이재수,하영수,최창락,송진언 대한신경외과학회 1987 Journal of Korean neurosurgical society Vol.16 No.4

Electrical monitoring of the nervous system offers the potential for the detection of injury, intraoperatively. The relationship of MEP(Motor Evoked Potential) and SEP(Sensory Evoked Potential) taken in 30 rats before and after spinal cord injury is reported. MEP was obtained from distal portion to the site of spinal cord injury by electrical stimulation of the cerebral motor cortex after insertion of a ball electrode in the cerebral motor cortex. SEP was collected at the cerebral somatosensory cortex during the sciatic nerve stimulation. Experimental animals were divided into a 20g㎝ spinal cord-trauma group and 50g㎝ spinal cord-trauma group. Changes of cardiopulmonary function after cerebral motor cortex stimulation and pre-and post-injury MEP and SEP were obtained at constant time interval. The results were follows : 1) Significant changes in blood pressure, pulse rate, and respiratory rate were noted to be elevated after stimulation of cerebral motor cortex and these were returned to normal in 10 minutes after stimulation. 2) MEP in control group showed that the latency was 8.6±1.54msec and the amplitude was 20.60±3.2㎶. In MEP of 20g㎝ spinal cord trauma group, the latency was increased to 30% (11.26±1.76msec) compared to control group at 10 minutes after the injury and the amplitude was decreased to 29% (14.60±2.99㎶). The latency was slowly decreased with the passage of time, to 21% increase. (10.42±1.84msec) at 1 hour after injury but the amplitude was not changed. In 50 g㎝ spinal cord-trauma group the latency was decreased to 75%(4.9±1.52㎶) compared to control group. With the passage of time, no change was revealed in latency but amplitude was decreased. The amplitude was decreased to 80%(4.00±1.49㎶) compared to control group. Change of MEP was marked in 50g㎝ spinal cord-trauma group. With the passage of time MEP was slightly improved in 20g㎝ spinal cord-trauma group but deteriorated in 50g㎝ spinal cord-trauma group. 3) The latency of SEP in control group was 12.22±0.7msec and the amplitude of those was 20.00±2.21㎶. No significant statistical change was recorded in the SEP of each spinal cord-trauma group compared to control group. MEP might be more important indicator than SEP in estimation and evaluation of the functional change of spinal cord injury.

Fast Output Voltage-Regulated PWM Buck Converter With an Adaptive Ramp Amplitude Control

Ji-Soo Chang,Hyoung-Seok Oh,Young-Hyun Jun,Bai-Sun Kong IEEE 2013 IEEE transactions on circuits and systems. a publi Vol.60 No.10

<P>This brief presents a pulsewidth modulation buck converter with an adaptive ramp amplitude control. The proposed buck converter can improve the load transient response and the reference tracking speed. A chip was fabricated in a 0.18-μm CMOS technology. Measurement results showed that the overshoot/undershoot at the output during the load transient period was reduced by up to 57% for a 450-mA load current step and that the reference tracking speed was improved by up to 71% for a 1.5-V output voltage change. The measured maximum power conversion efficiency was 92.6% at 3-MHz switching frequency when input and output voltages are 3.3 and 2 V, respectively.</P>

아시아 지역 폐렴 구균의 항균제 내성 현황 및 변화 양상 : Asian Network for Surveillance of Resistant Pathogens (ANSORP) Study

정숙인,김나영,손준성,기현균,고관수,서지연,장현하,김연숙,오원섭,백경란,이남용,송재훈,항생제 내성 감시를 위한 아시아 연합 (ANSORP) 대한감염학회 2004 감염과 화학요법 Vol.36 No.1

목적 : 1980년대부터 페니실린을 비롯한 β-lactam 계열과 비 β-lactam 계열 항균제에 대한 폐렴구균의 항생제 내성이 급격하게 증가하여 국내 뿐 아니라 세계적인 문제로 대두되고 있다. ANSORP 에서는 아시아 지역에서 폐렴구균의 항균제 내성과 그 변화 추이, 내성의 기전 및 위험인자를 분석하고자 본 국제 공동 연구를 시행하였다. 재료 및 방법 : 1999년 11월부터 2001년 8월까지 아시아 지역 12개국의 14개 기관에서 폐렴구균 감염증 환자의 임상 검체로 분리된 침습성 폐렴구균을 대상으로 액체배지 미량희석법을 이용하여 16개 항생제의 MIC를 구하였다. 위험인자의 분석을 위하여 폐렴구균 감염증 환자를 대상으로 의무기록지를 조사하였다. Quellung 반응을 통해 혈청형을 결정하였다. 결과 : 총 685균주 중 52.4%가 페니실린에 대하여 비감수성(중등도 내성 22.9%, 내성 29.5%)을 보였고, 그 빈도는 베트남(92.1%), 스리랑카(85.7%), 홍콩(67.9%), 한국(64.5%)의 순이었다. Erythromycin에 대한 비감수성 비율은 베트남(92.1%), 대만(87.7%), 한국(80.6%), 홍콩(76.8%) 등에서 높게 나타났고, 베트남, 대만, 한국, 홍콩 등의 erythromycin의 MIC_(90)이 32㎍/mL를 넘는 고도내성을 보였다. 홍콩, 싱가포르, 대만, 인도에서는 fluoroquinolone에 대한 내성 균주가 출현하였다. 전체 균주 중 다제내성 균주의 비율은 47.7%였다. 혈청형은 19형과 23형이 가장 많았고, 그 외 6형, 14형 등이 있었다. 페니실린 비감수성 감염증의 위험인자로는 5세 미만(OR=1.7; 95%, CI, 1.2-2.4; P=0.002), 기관지폐질환(OR=2.0; 95%, CI, 1.3-3.1; P=0.003), 악성종양(OR=2.3; 95%, CI, 1.2-4.6; P=0.015), 스테로이드의 사용(OR=2.8; 95%, CI, 1.1-7.4; P=0.032)이 확인되었다. 결론 : 침습성 폐렴구균 균주를 대상으로 한 본 연구의 결과 아시아 국가들에서 페니실린, β-lactam 및 macrolide에 대한 폐렴구균의 내성률 및 내성 정도가 급증하고 있음을 확인하였다. Background : Emergence of pneumococcal resistance became a global issue since 1990s. According to the ANSORP studies with clinical isolates and carriage isolates between 1996 and 1999, some Asian countries showed alarmingly high prevalence of resistance to penicillin and other antimicrobial agents. To investigate the changing trends of pneumococcal resistance, ANSORP study group has performed a multinational surveillance study with invasive pneumococcal isolates from Asian countries. Methods : All isolates from various invasive pneumococcal diseases were prospectively collected from 14 centers in 12 countries between November 1999 to August 2001. Broth microdilution tests with 16 antimicrobial agents were performed according to the NCCLS procedures. Serotyping was performed by means of Quelling reaction with use of group-specific antisera. Results : A total of 685 isolates were collected. Overall, 52.4% of invasive isolates from Asian countries were not susceptible to penicillin (intermediate (1), 22.9%, Resistant (R), 29.5%). Vietnam showed the highest prevalence of penicillin non-susceptibility (1 20.6%, R 71.4%) followed by Sri Lanka (1 71.4%, R 14.3%), Hong Kong (1 24.1%, R 76%) and Korea (1 9.7%, R 54.8%). China (I 19.8%, R 23.4%) and Malaysia (1 9.1%, R 29.5%) also showed remarkable increase in penicillin resistance compared with previous ANSORP data, which were less than 10%. Vietnam (92.1%), Taiwan (87.7%), Korea (80.6%), and Hong Kong (76.8%) showed high prevalence of erythromycin resistance. MIG_(90)S for ciprofloxacin were 4 ㎍/mL (Hong Kong) and 2 ㎍/mL (11 Asian countries except Hong Kong), respectively. Conclusion : Compared with previous data from ANSORP studies, antimicrobial resistance among invasive pneumococcal isolates has markedly increased in Vietnam, Sri Lanka, Taiwan, China, and Malaysia. Continuous surveillance of pneumococcal resistance in Asia is strongly warranted.

Sphingosine 1-Phosphate and Sphingosine Kinase Activity during Chicken Embryonic Development

Choi, Chang-Hwan,Jeong, Ji-Seon,Yoo, Bo-Im,Jin, You-Xun,Moon, Dong-Cheul,Yoo, Hwan-Soo,Oh, Seik-Wan,Hong, Seon-Pyo,Lee, Yong-Moon 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.4

The chicken embryo has been weil used in studies of the developmental process, and during development sphingosine and sphingosine 1-phosphate (So1P) are considered critical mediators of cell death and survival. In this study, we compared the sphingolipid contents of chicken embryos during the early embryonic development period from day 3 to day 6. HPLC analyses of sphingosine and So1P in chicken embryos revealed that sphingosine levels were greatly reduced on day 4 whereas So1P levels were not significantly changed. Sphingosine kinase(Sphk) activities, which require sphingosine as substrate to produce So1P, were also greatly reduced on day 4. Collectively, we found sphingosine levels and Sphk activities, but not So1P levels are changed in early stage of chicken embryos development.

農民技術受容에 影響을 주는 要因의 比較分析 : 關係機關과 情報傳達媒體를 中心으로

鄭址雄,崔敏浩,金性洙,徐圭善,李昶植 서울大學校 農科大學 1984 서울대농학연구지 Vol.9 No.2

The purpose of the study was to analyze the variables affecting farmers' adoption process of agricultural innovations in Korea. Specific objectives of the study were to ; (1) review the adoption process and the variables associated with this process, (2) investigate the rate of adoption of selected agricultural innovations in the fields of rice production, animal husbandary and horticulture, (3) analyze communication media and change agencies or institutions which affected the adoption of agricultural innovations, and (4) identify the relations of the farmers' adoption and communication exposure behavior. Data for the study were collected from 393 cluster sampled farmers out of selected 17 rural villages in Korea. Five graduate students and three faculty members of Seoul National University participated in conducting interview with pre-tested questionnairs. The data were analyzed by HP 3,000 computer in the College of Agriculture, Seoul National University. Major statistical techniques used for the study were frequency distribution, chi-square and discriminant analysis. Statistical significance was tested at .05 level. The major findings of the study were as follows : 1. Variables associated with the agricultural adoption process were classified into the following six categories ; (1) perceived characteristics of agricultural innovations, (2) personality and characteristics of adopters, (3) the patterns of communication media or channels, (4) efforts of change agents. (5) priorities in agricultural development policies, and (6) characteristics of social system. 2. Rats of adoption were about 83% in application of silicate fertilizers on rice seed bed, 41% in feeding calf starter known as artificial milk to calves, 56% vinyl mulching practices in vegetable cultivation, and 67% in spreading raw rice straw on paddy land to improve soil conditions. 3. Time lag between awareness and adoption appeared to be about seven months in application of silicate fertilizers on rice seed bed, and about a year in feeding calf starter. 4. Change agent interpersonal communication revealed to be the most important factor affecting farmers' awareness in application of silicate fertilizers on rice seed bed, in feeding calf starter, and in spreading raw rice straw on paddy land, while localite interpersonal communication in vinyl mulching practices in vegetable cultivation. 5. Change agent interpersonal communication appeared to be the most important factor affecting farmers' adoption in application of silicate fertilizers on rice seed bed and in feeding calf-starter, Localite interpersonal communications were more important in vinyl mulching practices of vegetable cultivation and in spreading raw rice straw. Localite interpersonal communications were more important factor at adoption stage than at awarenss stage. 6. Agricultural extension agencies appeared to be the most important factor affecting farmers' adoption in application of silicate fertilizers on rice seed bed, in feeding calf starter, and in vinyl mulching practices. Based on the results of this study, the following are recommended for further development of agricultural extension services and effective adoption process of agricultural innovation. 1. The variables associated with the agricultural innovation decision process should be taken into consideration to improve effectiveness of change agencies or agricultural extension services. 2. Effective use of communication media along with the feedback messages from the change agency as well as client system be considered to increase effectiveness and meaningfulness of both systems. 3. Innovative agricultural research be continually sharpen its focus on the highest priority needs of client system by utilizing feedback from farmers through the communication link of change agents. 4. A long-term educational approach by using various communication media be emphasized, and regular field survey on innovation-decision process will prevent discontinuance of innovations.

논문(論文) : 계급해방 속의 창기(娼妓)해방 -1950년대 상해시(上海市) 금창사업(禁娼事業)-

장수지 ( Soo Ji Chang ) 한국중국근현대사학회(구 중국근현대사학회) 2010 중국현대사연구 Vol.48 No.-

The Chinese Communist Party (CCP) had implemented the nationwide work to prohibit prostitution since the foundation of People`s Republic of China in 1949 until the late 1950s. The CCP asserted that this work would destroy the savage institution, which had insulted women and injured their physical and mental health. Local governments in every city closed brothel houses and arrested and punished brothel owners. They also helped prostitutes to return to society after treatment for venereal diseases and labor education. Works of prostitution prohibition were enforced from 1951 to 1958 in Shanghai city, which had showed the largest number of prostitutes in the world. Shanghai city government operated the licensed prostitution for two years and six months after the liberation and expected to restrict the prostitution business by controlling transactions of women`s sex through this public system. The city government declared it would execute such a radical policy as an education of whoremongers and help prostitutes with their job change. Although there is no way to confirm how many of these policies were carried out, it is certain that the city government concentrated more on regulating prostitutes and prostitute houses rather than it executed such radical policies. This operation of public prostitution, which laid stress on control policies, shows that the CCP`s policy of prostitution prohibition was not the one for women but a part of the works of purification of society. The regulation to prohibit prostitution overall carried out in Shanghai city in November 27th 1951 was applicable only to prostitutes and brothel owners, and such a trend to emphasize the reform of prostitutes continued until 1958. It is understandable that the reform of prostitutes was centered in the business of prostitution prohibition because the CCP saw prostitutes not only parasites which represented bad habits of old society and capitalist society but also their victims. The CCPas we can see from its experiment in the licenced prostitution, expected to solve the prostitution problem only by transforming "sellers of sex." Prostitutes who belonged to the class of drifting people were officially "liberated" when they became social workers after being educated in relocation camps. Such liberation was possible when the CCP was controlling the whole population and organizing women`s labor power. All the people who had the jobs related with prostitution were defined as the class of drifting people, which was understood as the laziest, parasitic, and breaking public morality. In the socialist country, therefore, it became urgent to correct such bad habits of this class. Moreover, it is because of this very understanding of drifting people that the CCP understood the reform of prostitutes` parasitic habits more important rather than the critique of social habits that made transactions of sex possible. Prostitutes were seen as the exploited in relation to their masters(brothel owners)who belonged to the same class of drifting people. This recognition of prostitutes as the exploited became clear since the overall enforcement of prostitution prohibition policy in November 1951 and strengthened when prostitutes were publicly complaining about the wrongdoings done by their masters. That is to say, prostitutes were understood as social victims because they became prostitutes to be exploited by their masters, but it was not understood that they became prostitutes because they were the women of the exploited class. In such an official discourse, therefore, not only discussions of the gap between rich and poor or their origins but also the critique of prostitutes` sufferings from transactions of sex or men`s habits to buy women`s sex were missed. The CCP could avoid the fundamental critique of contradictory recognition of sex, which was too strict about women and generous to men, although it destroyed the social habit of prostitution. The CCP`s definition of prostitutes as parasites and victims transformed the question of prostitution from women`s problem to the class issue. This transformation took away the sexual image of prostitutes by employing more vocabularies of class and weakened a social habit to evaluate women`s behavior by their chastity. People still criticized prostitutes for their "sexual decadency," however, while sexually discriminatory recognition was not fundamentally criticized. This example of the CCP`s prostitution prohibition policy tells that the work of "emancipation of women" avoided the fundamental critique of and transformation of sexually discriminatory society.

연구논문 : 종분포모형을 이용한 히어리 서식지의 분포 특성 연구

권혁수 ( Hyuk Soo Kwon ),류지은 ( Ji Eun Ryu ),서창완 ( Chang Wan Seo ),김지연 ( Ji Yeon Kim ),임동옥 ( Dong Ok Lim ),서민환 ( Min Hwan Suh ) 한국환경영향평가학회 2012 환경영향평가 Vol.21 No.5

Since the CBD(Conservation on Biological Diversity)`s 10th Conference of the Parties adopted the protocol on access to genetic resources and benefit sharing in Nagoya 2010, the importance of endangered species studies such as habitat distribution, protection and management have been more emerged. Corylopsis coreana, an endangered species in Korea, was isolated nationally and has been damaged by anthropogenic factors. In this paper, we identified the factors affecting C. coreana habitat at the national scale and regional scale using National Survey of Natural Environment and predicted the distribution of C. coreana. Annual precipitation, precipitation of wettest quarter, temperature seasonality and Digital Elevation Model(DEM) were derived as important factors at the national scale, and precipitation of wettest quarter, DEM and solar radiation on spring were identified as important factors at regional scale. Colylopsis distribution was affected by an effect of climate significantly at the national scale, and by additionally the microclimate and topography at regional scale. These findings will be used as the basis on habitat conservation and restoration plan and climate change.

A Multicenter Analysis of Clinical Features and Long-Term Outcomes of POEMS Syndrome in Korea

Kook Hye Won,Jang Ji Eun,Min Chang-Ki,Yoon Dok Hyun,Kim Kihyun,Bang Soo-Mee,Park Yong,Lee Jae Hoon,Yoon Sung-Soo,Kim Jin Seok 대한의학회 2024 Journal of Korean medical science Vol.39 No.2

Background: POEMS syndrome is a rare form of plasma cell dyscrasia characterized by polyneuropathy, organomegaly, endocrinopathy, monoclonal proteins, and skin changes. Owing to its low incidence, there are few reports regarding this syndrome. This multicenter study included 84 patients diagnosed with POEMS syndrome in South Korea. Methods: We retrospectively evaluated 84 patients diagnosed with POEMS syndrome at 8 hospitals in South Korea between January 2000 and October 2022. The clinical characteristics and treatment outcomes were analyzed. Results: The median patient age was 53 years (range, 26–77 years), and 63.1% of the patients were male. All patients had peripheral neuropathy, and 81 (96.4%) had monoclonal plasma cell proliferation. Plasma vascular endothelial growth factor levels were available for 32 patients with a median of 821 pg/mL (range, 26–12,900 pg/mL). Other common features included skin changes (54.2%), volume overload (71.4%), and organomegaly (72.6%). Of the 84 patients, 75 received initial treatment (local radiotherapy, 6 [8.0%]; chemotherapy, 17 [22.7%]; both chemotherapy and local radiotherapy, 9 [12.0%]), upfront autologous stem cell transplantation (ASCT), 43 (57.3%; with induction chemotherapy, n = 12, 16.0%; without induction chemotherapy, n = 31, 41.3%). The median follow-up duration was 40.7 months. The 5-year overall survival (OS) was 78%, and the 5-year progression-free survival (PFS) was 55%. Patients who underwent upfront ASCT and were diagnosed after 2014 had a longer OS and PFS. Conclusion: The demographics of Korean patients with POEMS syndrome were similar to those reported previously. Because of the introduction of new treatment agents and the reduced rate of transplant-related mortality related to ASCT, the treatment outcomes of Korean patients with POEMS syndrome have improved in recent years.

지속가능발전목표(SDGs) 내 성평등 독자 목표의 국내이행을 위한 지표 연구

장은하(Eun Ha Chang),문유경(You Kyung Moon),조혜승(Hye Seung Cho),김정수(Jung Soo Kim),김지현(Ji Hyun Kim) 한국여성정책연구원(구 한국여성개발원) 2018 여성연구 Vol.98 No.3

2015년 국제사회는 새천년개발목표 (Millennium Development Goals, 이하 MDGs)를 대체 할 새로운 국제개발목표로 지속가능발전목표(Sustainable Development Goals, 이하 SDGs)를 채택하였다. SDGs는 17개 목표(goals)와 169개의 세부목표(targets), 그리고 244개의 지표로 구성되었으며 2030년까지 달성을 목표로 한다. MDGs에서와 마찬가지로, SDGs에서는 성평등을 위한 독자 목표(Goal 5)로 “양성평등 및 여성과 여아의 권한강화”가 채택되었다. 독자 목표인 5번의 경우 MDGs와는 달리 구조적 변화를 촉구하는 항목들이 대거 포진되어 성평등 달성에 있어서 전환적(transformative)인 변화를 추구하고 있다. 본고는 SDGs의 국내이행의 착수를 앞두고, SDGs 성평등 목표의 이행 점검을 위한 국내 가용통계를 점검하고, 향후 SDGs 성평등 목표의 국내이행점검을 위한 기초 매핑을 제시함으로써, 국내이행을 위한 지표 수립에 기여하고자 한다. 이를 위해 이론적 배경으로 SDGs 내 지표 수립과정을 소개하고 특히 성평등 목표의 범위와 지표 수립 과정을 보다 자세히 서술한다. 이어서 SDGs 국내이행을 위한 거버넌스 체계를 소개하고 현재까지 수행된 연구들을 개괄한다. 본 연구의 분석을 위해서는 SDGs 글로벌 지표의 정의의 완성도와 현재 국내통계의 가용상태를 고려하여 4가지의 범주로 구성된 분석틀을 고안하였다. 연구방법으로는 국내･외 관련 문헌을 검토하였다. 연구결과, SDGs의 효과적인 국내이행을 위해서는 정의가 불확실한 지표에 대해 조작적 정의가 선행될 필요가 있으며, 국내 가용통계가 부재하거나 미흡한 지표의 경우 이에 대한 추가개발의 필요함이 드러났다. 결론에서는 분석내용을 토대로 국내 SDGs 이행을 위한 시사점을 도출하여 논의하였다. This research explores the status and future tasks of national implementation of Sustainable Development Goal (SDG) 5 in South Korea by especially focusing on indicators. Among its 17 goals and 169 targets, SDGs sets forth gender equality and empowerment of women and girls as a stand-alone goal 5, and gender issues are also cross cut in other goals as well. The independent as well as cross cutting nature of gender related issues imply the quintessential nature of gender in attaining the overall SDG targets. In particular, SDG goal 5, unlike Millennium Development Goals (MDGs), pursues transformative changes in achieving gender equality with a number of indicators urging structural changes. Given this context, this paper examines the meaning and the availability of national data corresponding to SDG 5’global indicators, and provides implications for South Korea’s establishment of SDG 5 indicators for national implementation. As a theoretical background, we first outline the process of setting up the indicators of SDGs with particular focus of Goal 5, and then we introduce the governance system for SDGs implementation in South Korea and analyze the existing literature for this study. For methods, this study employs document reviews. We created an analytical matrix, using two pillars ; indicators’ definitions and availability of national data. Based on this matrix, this research categories each indicators into four groups. As results, this study reveals that several indicators require operational definition for domestic implementation and development of gender-sensitive domestic data for future implementation in South Korea. In conclusion, we present practical implications for future implementation of SDG goal 5 and its indicators in South Korea. The results of this study can be used as basic research for establishing national indicators for the implementation of gender-related SDG targets in South Korea, and ultimately to achieve the goal of gender equity in SDGs.

Newcastle Disease Virus의 Fusion 단백 유전자의 제한효소분절형태(RELP)의 특이성

장경수,김지영,김석,김태용,송영환,허지연,김현수,송희종,전무형 충남대학교 수의과대학 동물의과학연구소 2001 動物醫科學硏究誌 Vol.9 No.-

To evaluate the specificity of restriction fragment length polymorphism (RFLP) of Newcastle disease virus (NDV) fusion (F) protein gene for various NDV strains. F protein genes of NDV CBP-1 isolate, LaSota, B1 and Kyojungwon (KJW) were amplified by reverse transcriptase-polymerase chain reaction (RT-PCR) and RFLP were examined. In RT-PCR using F primer sets for 1.7 kb F gene, the amplified products were observed in CBP-1, LaSota and B1 except KJW. However, F2 primer set for 521 bp yielded the amplified bands with all strains. The amplified F genes (1.7 kbp) were treatd with 15 different restriction enzymes to analyze RFLP and the cleavage patterns. CBP-1 showed various cleavage patterns with 8 enzymes, LaSota, with 11 enzymes and B1, with 11 enzymes. According to the cleavage patterns, the physical maps were constructed, and it was found that CBP-1, LaSota and B1 strains had specific cleavage sites with HinfI, XbaI and XhoI. These findings suggest that RFLP are worth applying in the diagnosis and molecular epidemiological studies of Newcastle disease.