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이중혈류유발 심폐소생술이 심정지를 유발한 개의 단기 생존율에 미치는 영향
황성오,조준휘,강구현,김성환,문중범,이강현,이승환,윤정한,최경훈,홍은석 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3
Background and Objectives: We previously reported that, compared with standard cardiopulmonary resuscitation(S-CPR), better hemodynamic effects could be achieved by simultaneous sterno-thoracic cardiopulmonary resuscitation(SST-CPR) in which we compressed the sternum and constricted the thorax circumferentially during the systolic period by using a device. This study was designed to assess whether SST-CPR, compared with S-CPR, improve the survival rate of dogs with cardiac arrest. Subjects and methods: Twenty-five mongrel dogs(19∼31㎏) were enrolled in this study. After four minutes of ventricular fibrillation induced by an AC current, animals were randomized to resuscitate with either S-CPR(n=13) or SST-CPR(n=12). Epinephrine(1 ㎎) was injected into the right atrium every three minutes after the beginning of CPR. Defibrillation was attempted after 6 minutes of CPR. Standard advanced cardiac life support was started if defibrillation was not successful. Results: SST-CPR resulted in significantly(p<0.001) higher systolic arterial pressure(91±47 vs 47±24 ㎜ Hg), diastolic pressure(43±24 vs 17±10 ㎜ Hg), coronary perfusion pressure(35±25 vs 13±9㎜ Hg), and end tidal CO2 tension(9±4 vs 3±2 ㎜ Hg). Two of 13 animals(15 %) resuscitated with S-CPR and six of 12 animals(50%) resuscitated with SST-CPR survived until 12 hours after cardiac arrest(p<0.05). Donclusion: SST-CPR, compared with S-CPR, improves the short-term survival rate in canine cardiac arrest.
홍관이,이광재,김두경,부기원,노성규,한상준,박기동,오수일,문병용,이철규,박장평,엄기진,박남환 江原大學校附設 體育科學硏究所 1984 江原大學校附設體育科學硏究所論文集 Vol.- No.9
This study is designed to grasp the elements and situations of stage fright in order to propose a part of ways to cope with it. We make 511 top-class high school players, male and female, in the central districts (Seoul, Inchon, Kyungki, Chungbuk, and Kangweon Province) on object of questionnaire, and get the following results. Through players generally have all-round characters they show weakness in the superiority and emotional stability while showing strength in the sonformity. This fact comes to be related to the elements which cause stage fright. Physiological changes also have many effects on the symptom of stage fright. Especially, stage fright increases when players show sensitive reaction to the self-consciousness of final consequence which comes from the tension or uneasiness of sympathetic nerve, Thus, it turns out that players make use of reducing psychological burden by physical exercise or adjusting the level of demanded result in order to release the stage fright.
The analysis of golf research trends - based on three online database sites
( Moon Hwan Lim ),( Tae Seoung Lim ),( Ho Youl Lee ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1
Purpose: The purpose of this study was to suggest the current international golf research status and the future directions by classifying the golf researches into status of published golf research by year, major fields, study methods, study objects and study topics from three online database sites such as Proquest, Science Direct and Springer Links to provide the basis of future development directions for domestic golf related researches. Method: The meta-analytic approach was used to set the framework such as status of published golf research by year, major fields, study methods, study objects and study topics, and data were classified with this framework. SPSS WINDOW 12.0 was used to perform the frequency analysis and cross-tabulations for the data process. Result: First, the status of published golf research by year showed that the number of research was increased in every year, and the results of five year classification confirmed the increase of researches. There were 4 researches from 1991 to 1995, 26 researches from 1996 to 2000, 59 researches from 2001 to 2005 and 113 researches from 2006 to August, 2010. Second, the status of published golf research by major fields showed that there were 59 researches in the field of environment, 33 researches in business and biomechanics fields, 31 researches in physiology field, 13 researches in psychology field, 11 researches in sociology field, 8 researches in sports engineering field, 6 researches in policy field, 3 researches in pedagogy field, 2 researches in design field and 1 researches in history field. The results of cross-tabulations between year and major fields presented that emphasized major fields in golf researches these days are fields of environment(22.1%), biomechanics(21.2%), physiology(18.6%) and business( 15.0%). Third, the status of published golf research by study methods showed that there were 123 researches in experimental method, 45 researches in qualitative method, 20 researches in quantitative method and 14 researches in mixed method. The results of cross-tabulations between year and study methods presented that emphasized study methods in golf researches these days are experimental( 61.9%) and qualitative methods(20.4%). Fourth, the status of published golf research by study objects showed that there were 72 researches which aimed at environment, 70 researches which aimed at participant, 29 researches which aimed at golf equipment, 10 researches which aimed at program and development, 8 researches which aimed at literature, 7 researches which aimed at robot, 3 researches which aimed at golf policy and golf swing and skill. The results of cross-tabulations between year and study objects presented that emphasized study objects in golf researches recently are participant(35.4%), golf course(28.3%) and golf equipment(18.6%). Finally, the status of published golf research by study topics showed that there were 49 researches written in environmental topic, 31 researches written in physiological topic, 26 researches written in golf swing and skills and golf equipment topics, 23 researches written in business topic, 17 researches written in golf course topic, 13 researches written in psychological topic, 9 re-searches written in policy topic, 5 researches written in sociology topic and 3 researches written in ethnical topic. The results of cross-tabulations between year and study topics presented that emphasized study topics in golf researches recently are environment(22.1%), physiological( 19.5%), golf equipment(17.7%) and golf swing and skills(1%). Conclusion: This study confirms that closer to recent years the golf related studies has been increased and those studies were distributed to environment(22.1%), biomechanics(21.2%), physiology( 18.6%) and business(15.0%) fields. Study methods which commonly used in golf related studies showed that experimental study(61.9%) was used more than qualitative study(20.4%), and the participant(35.4%), golf course(28.3%) and golf equipment(18.6%) were the study objects of the studies. Finally, study topic of golf related studies were found to be environment(22.1%), physiological( 19.5%), golf equipment(17.7%) and golf swing and skills(1%). However, this study cannot be confirmed as standard data, because it used only three online database sites such as Proquest, Science Direct and Springer Links and put limitations for ease of data collection. Therefore, future study will need to analyze with golf-related research data which is collected from Journal of Sports as much as possible.
Seoung-Hwan Park,Yong-Tae Moon IEEE 2014 IEEE photonics journal Vol.6 No.5
<P>The temperature droop characteristics of internal efficiency (IE) in InGaN/GaN quantum well (QW) structures were investigated using the multiband effective mass theory. In the case of a relatively small Auger recombination (< C-A = 5 x 10(-30) cm(6)s), the QW structure with a smaller In composition (x = 0.1) shows a larger hot/cold factor (IET1/IET2, with T-1 > T-2) than that with a larger In composition (x = 0.3) because the radiative recombination is dominant and the IE of the former is much larger than that of the latter. The hot/cold factors for QW structures with x = 0.1 and 0.3 are 0.85 and 0.71 at J = 100 A/cm(2), respectively. On the other hand, in the case of a relatively large Auger recombination (> C-A = 10(-28) cm(6)s), the hot/cold factor (0.69) of the QW structure with a larger In composition is found to be larger than that (0.62) with a smaller In composition. This is attributed to the fact that the Auger recombination is dominant even for the QW structure with a small In composition and that the difference of the IE between two different temperatures decreases with increasing x.</P>
Optical Gain Analysis of Graded InGaN/GaN Quantum-Well Lasers
Park, Seoung-Hwan,Moon, Yong-Tae,Lee, Jeong Sik,Kwon, Ho Ki,Park, Joong Seo,Ahn, Doyeol Science Press 2011 CHINESE PHYSICS LETTERS Vol.28 No.7
<P>Optical properties of graded InGaN/GaN quantum well (QW) lasers are analyzed as improved gain media for laser diodes emitting near 500 nm. These results are compared with those of conventional InGaN/GaN QW structures. The heavy-hole effective mass around the topmost valence band is found to nearly not be affected by the inclusion of the graded layer. The graded InGaN/GaN QW structure shows a much larger matrix element than the conventional InGaN/GaN QW structure. The radiative current density dependences of the optical gain are similar to each other. However, the graded QW structure is expected to have lower threshold current density than the conventional QW structure because the former has a lower threshold carrier density than the latter.</P>
조민준,Seoung-Hwan Moon,Ji-Ho Lee,Jae Hyup Lee 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.5
Study Design: A nationwide, observational, and cross-sectional study targeting postmenopausal patients from 62 orthopedic outpatient clinics in Korea between October 2010 and February 2011. Purpose: This study was carried out to investigate comorbidity, trauma history, and the status of osteoporotic fracture treatment in Korean postmenopausal women. Overview of Literature: There has been little reports on the comorbidity, family history, trauma history, and treatment status of osteoporotic fractures in patients visiting the orthopedic outpatient clinics in Korea. Methods: A total of 1,255 postmenopausal women between the ages of 50 and 80 years were enrolled in the study and the population distribution was reflected by region. Comorbidity, familial history of osteoporosis, familial history of osteoporotic fracture, history of falls, and status of osteoporotic fracture management were evaluated using an interview and questionnaire. The relationship between family history of osteoporosis and bone mineral density was analyzed. Results: A number of patients (23%) had a family history of osteoporosis and 16.5% had a family history of fractures. Most (64.7%) of the patients had one or more comorbidities, including 58.8% exhibiting a chronic disease and 16.4% suffering from diseases that restrict exercise or walking. The results of the questionnaire indicated that 21.8% of these fracture patients had experienced a fracture previously and that the most common type of fracture was that of the spine. Lumbar spine bone mineral density was found to be lower in the presence of family history of osteoporosis. Conclusions: Postmenopausal women are liable to have osteoporotic fractures due to the high prevalence of osteoporosis, a history of falling, and the comorbidity with diseases that restrict ambulation. A better understanding of postmenopausal women in the orthopedic outpatient settings is important to the management of osteoporotic fractures.
Microstructure Study of Electrochemically Driven LixSi
Son, Seoung-Bum,Trevey, James E.,Roh, Hyunchul,Kim, Sung-Hwan,Kim, Kee-Bum,Cho, Jong Soo,Moon, Jeong-Tak,DeLuca, Christopher M.,Maute, Kurt K.,Dunn, Martin L.,Han, Heung Nam,Oh, Kyu Hwan,Lee, Se-Hee Wiley (John WileySons) 2011 Advanced energy materials Vol.1 No.6