스마트폰 사용이 보행역학과 청각 인지에 미치는 영향

박해원(Park, Hae-Won),박상균(Park, Sang-Kyoon) 한국사회체육학회 2016 한국사회체육학회지 Vol.0 No.64

The purpose of this study was to investigate the effect of smart-phone use on gait biomechanics and auditory cognition using with texting while walking. Fifteen healthy young men using a smart-phone more than three months participated in this study. In the key findings of this study, the subjects decreased the ROM of body segments with increased medial-lateral CV of COM while walking with a smart-phone use. ROM of head, foot, and lower leg were decreased when the subjects walked by using a smart-phone. Maximum distance of auditory cognition was decreased when subject walked by using a smart phone(p<.05). It is concluded that the subjects change gait strategy with a reduced walking speed and reduced ROM with a given task. However, the subjects would expose to more vulnerable position of the body to unexpected environmental changes as they reduce the ability to control lateral stability of the body and auditory cognition.

음식폐기물 플라즈마 저온탄화

박해균(Hae kyoon Park),김종석(Jong Seok Kim) 한국환경에너지공학회 2022 한국열환경공학회 학술대회지 Vol.2022 No.2

이전의 음식폐기물 처리 방식(사료화, 퇴비화)의 한계로 국내외에서 다양한 문제점이 발생되고 있습니다. 국내에서는 돼지열병 및 조류독감의 원인으로 지목되기도 하여 직접사료화 금지 등의 조치가 이루어 졌지만 음식폐기물은 계속적으로 발생 될 수밖에 없고, 발생된 움식폐기물을 적절하게 처리 가능한 기술이 요구되고 있습니다. 비츠로넥스택의 풀라즈마 저온탄화 및 열분해 기술은 처리 반응로의 온도를 저온으로 운전가능하며 기존 처리방식(건조 등)의 문제점인 처리부산물의 미부숙, 보관 및 재활용의 한계를 극복하고자 개발된 기술입니다. 질소(N2) 플라즈마 열원을 이용하여 직접 탄화하여 소각이 아닌 열분해방식으로 다량의 탄소 상태로 처리되어 처리 부산물의 재활용성을 극대화 하는 기술입니다. 조금 전까지 사람들이 섭취하던 께끗한 음식물 쓰레기를 자원화 하여 지구환경을 살리고 갈 곳이 없는 음식폐기물을 재활용 하여 인간의 삶과 지구환경을 더욱 윤택하게 하는 기술입니다. • 해당 기술 특징 1) 처리대상 : 일반음식폐기물, 생선뼈, 조개껍질류, 양파껍질류, 파뿌리 둥 2) 구성품 : 풀라즈마 발생기, N2 발생기, 냉각수 Tank, 분진 및 가스처리 장치류 동 3) CO2 발생 량 : 약0. 5% (열분해 설 비 특성) • 특허 1) 특허 제 10-1987334호 I 고온 플라즈마를 이용한 유기성물질의 탄화장치 및 이를 이용한 탄화방법 2) 특허 제 10-2279175호 I 공동형 비이송식 움극전방 텅스텐봉 삽입형 폴라즈마 토치 3) 특허 제 10-229 94 15호 I 고온 플라즈마를 이용한 배치식 복합온도 처리기 및 이의 배가스 처리 방법

Gas Chromatography/Mass Spectrometry-Based Metabolic Profiling and Differentiation of Ginseng Roots According to Cultivation Age Using Variable Selection

Park, Hae Eun,Lee, Seok-Young,Hyun, Sun-Hee,Kim, Da Yeon,Marriott, Philip J,Choi, Hyung-Kyoon Oxford University Press 2013 Journal of AOAC International Vol.96 No.6

<B>Abstract</B><P>Ginseng roots are an important herbal resource worldwide, and the adulteration of ginseng with age is recognized as a serious problem. It is therefore crucial to develop objective criteria or standard protocols for differentiating ginseng root samples according to their cultivation age. The reported study used GC/MS combined with multivariate statistical analysis with variable selection to obtain metabolic profiling and an optimal partial least squares-discriminant analysis (PLS-DA) model for the differentiation of ginseng according to cultivation age. Relative levels of various metabolites, such as amino acids, alcohols, fatty acids, organic acids, and sugars, were measured for various ginseng cultivation ages. Increasing cultivation age resulted in the production of higher levels of panaxynol and panaxydol, which are active polyacetylene compounds in ginseng. In addition, optimized PLS-DA models for the prediction of ginseng age were obtained by selecting variables based on a variable importance in the projection cut-off value of 1.3. Proline, glucaric acid, mannose, gluconic acid, glucuronic acid, myoinositol, panaxydol, and panaxynol are suggested as key and relevant compounds with which to differentiate the age of ginseng samples. The findings of this study suggest that GC/MS-based metabolic profiling can be used to differentiate ginseng samples according to cultivation age.</P>

상행대동맥류로 수술받은 Marfan 증후군 환자에서 발생한 박리성 하행대동맥류 1예

박태병,김응진,문태훈,조철호,고광곤,조상균,김삼수,김문환,진성훈,박찬섭,서창해 대한내과학회 1993 대한내과학회지 Vol.44 No.2

Marfan증후군 환자에서의 심혈관계 병변은 주로 상행동맥의 확장과 이에 동반된 합병증(대동맥박리, 대동맥판 폐쇄부전증)을 나타나는 경우가 많으며 이들 병변이 문제를 일으킬 정도가 되면 수술적 치료를 하는 경향이다. 그러나 Marfan증후군 환자에서의 혈관병변은 대동맥 중막의 약화로 인해 대동맥의 다른 부위에서도 쉽게 일어날 수가 있으며 주의깊은 관찰과 대비가 필요하다. 저자들은 Marfan증후군 환자에서 대동맥판 폐쇄부전증이 동반된 상행대동맥류로 modified Bentall수술을 시행받고 추적 관리중 하행대동맥에 박리성대동맥류가 발생하여 내과적으로 치료한 증례를 경험하였기에 보고하는 바이다. Most of the patients with Marfan's syndrome are affected by cardiovascular complications which is responsible for the patient's reduced life expectancy. So, to prevent catastrophic event, surgical correction of dilated aorta, dissecting aortic aneurysm or incompetent valve is often indicated. The cardiovascular complication can occur on any large vascular system and multiple lesions and recurrences are not rare. Case: 36-years-old female with Marfan's syndrome was admitted due to suddenly developed back pain. She was performed modified Bentall's operation 4 years earlier due to ascending aortic aneurysm and aortic regurgitation as complications of Marfan's syndrome. The aortography and abdominal ultrasonography revealed dissecting aneurysm at descending thoracic and abdominal aorta without compromised major branches. The patient was managed conservatively and was able to discharge without any serious problems.

도시와 농촌 청소년의 학업성취와 삶의 질

박영신(Park Young-Shin),박영균(Park Young-Kyoon),김의철(Kim Ui-Chol),한기혜(Han Kee-Hae) 한국청소년정책연구원 2011 한국청소년연구 Vol.22 No.3

이 연구의 주된 목적은 도시와 농촌 청소년의 학업성취와 삶의 질을 비교하고, 이에 대한 지역, 부모의 기대, 부모자녀갈등, 자기효능감의 상대적인 영향을 분석하는데 있다. 서울시와 전국의 6개 도(경기도, 충청도, 전라도, 경상도, 강원도, 제주도)에서 각각 도시와 농촌지역 1개 학교씩 표집하였다. 분석대상은 총 1,920명으로서, 남녀 중학생 640명(도시 336명, 농촌 304명)과, 그들의 부모(도시 672명, 농촌 608명)도 자녀와 짝을 이루어 표집하였다. 연구자가 제작한 질문지를 사용하였으며, 신뢰도는 α=.79∼.87 이었다. 분석결과는 다음과 같다. 첫째, 도시와 농촌의 차이를 비교한 결과, 도시 부모는 농촌 부모보다 자녀의 학업에 대한 기대수준이 높았으며, 자녀와 갈등정도에서는 차이가 없었다. 둘째, 도시 청소년은 농촌 청소년보다 학업에 대한 기대수준 및 객관적 학업성적이 훨씬 더 높았고, 삶의 질은 약간 더 높았다. 셋째, 학업성취도에 대한 관련 변인들의 영향을 분석한 결과, 부모의 학업기대가 높을수록 청소년의 학업기대가 매우 높고, 나아가서 청소년의 자기효능감에 긍정적인 영향을 미쳤으며, 자기효능감이 높을수록 객관적 학업성적이 높고 주관적 성취지각이 긍정적이었다. 지역은 객관적 학업성적에 대해 영향이 있었으나, 주관적 성취지각에는 영향을 미치지 않았다. 넷째, 삶의 질에 대한 관련 변인들의 영향을 분석한 결과, 부모자녀간의 갈등은 자기효능감에 부정적 영향을 미치고, 낮아진 자기효능감은 삶의 질도 감소시켰다. 지역도 삶의 질에 영향이 있었으나, 지역보다는 청소년의 자기효능감이 삶의 질에 훨씬 강력한 직접효과를 나타내었다. 이러한 결과는 도시와 농촌 청소년의 학업성취도와 삶의 질에서의 지역차이 극복 방안에 대한 하나의 시사점을 제공한다. The purpose of this study is to examine levels of academic achievement and the quality of life among students living in urban and rural areas and to examine the influence of residence, parental expectations of academic achievement, parentchild conflict and self-efficacy. To test and explore the differences between urban and rural samples, an empirical study was conducted with a total of 1,920 respondents (336 middle school students living in an urban area and 304 students living in a rural area) and their parents (672 living in an urban area and 608 living in a rural area) who completed a structured questionnaire developed by the first three authors which also included Bandura’s self-efficacy scale (Bandura, 1995). Those respondents living in urban and rural areas of six different provinces (Gyeonggi, Chungchung, Jeonla, Gyeongsang, Gangwon and Jeju) and also Seoul for the urban sample were selected. The results are as follows. The reliability of the scales varied from α=.79∼.87. Firstly, the parents of students living in urban areas had higher expectations of academic achievement than the parents of students living in rural areas. As for the issue of parent-child conflict, there were no significant differences between the two sample groups. Secondly, students living in urban areas had higher academic aspirations, higher levels of academic achievement grade and a higher overall quality of life than students living in rural areas. Thirdly, parental expectation of academic achievement, the students’ own academic aspirations and self-efficacy were predictive of higher academic grades. Residency influenced objective academic grades to some extent but it was not predictive of subjective achievement. Fourthly, parent-child conflict and low selfefficacy had a somewhat negative influence on the quality of life for all students. Self-efficacy had a positive influence and residency had a modest influence upon quality of life. The implications of these results, in terms of academic achievement and quality of life for students living in both urban and rural areas are also discussed.

열분해가스화용융시설의 소각시설 검사기준 적용성 연구

윤균덕(Kyoon Duk Yoon),오창석(Chang Seok Oh),유해민(Hae Min Yoo),박인출(In Chool Park) 한국열환경공학회 2009 한국열환경공학회 학술대회지 Vol.2009 No.추계

정신분열병 환자의 인지과제수행에서 삼차원적 시공간-운동 방해자극 처리의 특성

정혜정,김재진,박성혁,전종희,김지혜,염태호,이장한,김선일,구정훈,조원근,안석균,이홍식 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.2

Objectives : Abnormalities of cognitive responses to verbal and visual distracter in schizophrenia have been demonstrated in numerous studies but little is known about three dimensional visuospatial-motor distracter processing. The purpose of this study was to investigate the vulnerability of patients with schizophrenia to three dimensional visuospatial-motor distracter. Methods : 14 patients with schizophrenia and 14 normal volunteers were assessed on three dimensional maze tasks requiring on working memory and reasoning ability in the virtual reality environment. Performances were compared according to with- or without-distracter conditions. Results : Patients with schizophrenia showed significantly lower performances than normal control group on cognitive flexibility, simple motor function or motor control and motor coordination, working memory span and delayed performance times. The performance index tended to be more deteriorated, but not significantly, in with-distracter condition than in Without-distracter condition in schizophrenia. Conclusions : Patients with schizophrenia tend to be vulnerable to visuospatial-motor distracter which simulate the real world of three dimensional environment.

한국인 자연치의 색에 관한 연구

박해균,정재헌,Park, Hae-Kyoon,Chung, Chae-Heon 대한치과보철학회 1988 대한치과보철학회지 Vol.26 No.1

The purpose of this investigation was to analyze the color of natural teeth by means of the OFC-1001 DP colorimeter which could measure in Adams Coordinate System (L,a,b system). The subjects were the 164 persons (82 men and 82 women) ranged from the teen to the sixtieth who had come to infirmary of dental college, Chosun University. The colors of incisal third, middle third and cervical third of maxillary right incisor, maxillary right canine and maxillary right second premolar were examined after the teeth were cleaned, polished and dried. The data were analyzed statistically by means of SPSS (Statistical Package For the Social Science). The results were as follows. 1. The means of L(lightness), a (red chromaticity), b (yellow chromaticity) of all teeth were measured (Table 2,3,4). 2. The color of teeth was yellowish-gray or bluish-gray. 3. The L value and b value of the cervical third was greater than those of the incisal and middle third. 4. The L value of maxillary 2nd premolar was greater than those of maxillary incisor md maxillay canine. 5. The a & b values of maxillary canine were greater than those of maxillary incisor and maxillary 2nd premolar. 6. The average values of L,a,b of teeth between male and female were not significant. 7. The L values of teeth were decreasing and the b values of teeth were increasing as the age was increased, but there was no corelation between the a values and aging.

뇌하수체 거대선종과 동반된 저나트륨혈증 1예

김태균,구호석,박성길,전혜정,권민정,이순희,박정현 인제대학교 2007 仁濟醫學 Vol.28 No.-

Secondary adrenal insufficiency from pituitary macroadenoma is rare cause of hyponatremia. But elderly patients are particularly prone to hyponatremia of secondary adrenal insufficiency. We experienced a 66-year old male patient with hyponatremia as the initial manifestation of secondary adrenal insufficiency from pituitary macroadenoma. The symptoms of the patient were general weakness, headache, anorexia, and abdominal discomfort for several days. Laboratory examination indicated serum sodium/potassium 110/3.6 mEq/L. On dynamic examination of the anterior pituitary hormone, the patient had anterior pituitary insufficiency. Brain imaging was performed and the pituitary macroadenoma was discovered. Hyponatremia and symptoms were corrected by IV hydrocortisone. After substituting oral prednisolone for IV hydrocortisone, the patient was discharged.

Linear load와 Flat load 훈련프로그램이 장기간 휴식 후 시즌전 준비기에 있는 럭비 선수의 최대 근력, 근파워 및 유산소성 운동수행능력에 미치는 영향

김태균(Tae Kyoon Kim),박해찬(Hae Chan Park),윤성진(Sung Jin Yoon) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.49

The purpose of this study is to compare the effect of Linear lo ad training program and Flat load training program on muscular strength, and power, and aerobic ability of forwards·backs rugby player who had underwent detraining period during 8 weeks. 30 players in university rugby team participated in the test. Two training programs were applied to same subjects. After applied Linear load training program of 13 weeks, season of 10 months, and detraining of 8 weeks were applied. Thereafter, Flat load training program was applied. Linear load training program showed higher increase rate than Flat load training program in muscular strength of backs. and, Linear load training program showed higher increase rate than Flat load training program in muscular power, and aerobic ability. In conclusion, the result of this study was different with pre study without detraining period. In the future, it is necessary for development of various training program.