Fast Eating Speed Increases the Risk of Endoscopic Erosive Gastritis in Korean Adults

Min-Kyung Kim,Byung Joon Ko,E-Yeon Kim,Byoung-Duck Han,조경환 대한가정의학회 2015 Korean Journal of Family Medicine Vol.36 No.6

Background: Fast eating or overeating can induce gastrointestinal diseases such as gastritis. However, the association between gastritis and speed of eating is unclear. The aim of this study was to determine whether eating speed is associated with increased risk of endoscopic erosive gastritis (EEG). Methods: We carried out a cross-sectional study involving 10,893 adults who underwent a general health checkup between 2007 and 2009. Two groups, EEG patients and EEG-free patients, were compared by using the t-test and the chi-square test. Multiple logistic regression analyses were performed to investigate the association between eating speed and EEG. Results: The group with EEG had a higher proportion of males, average age, body mass index, and percentages of current smokers and risky drinkers than those without EEG. After adjusting for anthropometric, social, and endoscopic parameters, the group with the highest eating speed (<5 min/meal) had 1.7 times higher risk for EEG than the group with the lowest eating speed (≥15 min/meal) (odds ratio, 1.71; 95% confidence interval, 1.20–2.45). Conclusion: High eating speed is an independent risk factor for EEG. Our results indicate the need for further studies to clarify the role of eating speed in gastritis.

생식용 굴(Crassostrea gigas) 작업장의 위생안전성에 대한 모니터링

강경태 ( Kyung Tae Kang ),박선영 ( Sun Young Park ),최종덕 ( Jong-duck Choi ),김민주 ( Min Joo Kim ),허민수 ( Min Soo Heu ),김진수 ( Jin-soo Kim ) 한국수산과학회 2017 한국수산과학회지 Vol.50 No.2

This study assessed the safety of raw oysters (Crassostrea gigas) for consumption during processing in a processing plant. Bacterial contamination (e.g., viable cell counts, coliform groups, and pathogenic bacteria) and chemical contamination (e.g., heavy metals and shellfish toxins) were measured on raw oysters, a processing equipment, employees, and work areas. No total mercury, lead, paralytic shellfish poison, diarrheic shellfish poison, or norovirus was detected in any post-harvested oyster samples. However, the cadmium level ranged from 0.1-0.2 mg/kg. The viable cell count and Escherichia coli and coliform group levels in post-harvested oysters ranged from 4.00-4.54 log CFU/g, ND-210 MPN/100 g, and 110-410 MPN/100 g, respectively. The viable contaminating cell counts on employees, equipment, and work areas were in the range of 0.90-3.46 log CFU/100 cm². Airborne bacteria in the work areas ranged from 0.60 to 1.81 log CFU/plate/15 min. Thus, no significant health risks were detected in the processing plant.

中學 科學敎育의 探究學習에 대한 評價問項 開發 (Ⅱ)

閔庚德,楊洪準,李善行,鄭遠佑,이병교,金裕漢,羅長薰 경북대학교 과학교육연구소 1985 科學敎育硏究誌 Vol.9 No.-

This study was accomplished to develope the evaluation items for inquiry learning in the 2nd grade Middle School Science for the consecutive study of the evaluation items for inquiry learning in the 1st grade Middle School Science(U-Hang Ki et al, 1984). In this study, paper and pencil test items and performance test items are made by analyzing the abilities of inquiry according to the contents and four basic experiments from each unit in the 2nd grade Middle school science. These evaluation items were applied to tke five classes of the 2nd grade of middle school to test their validity. It is desirable that performance test schuld be used for the evaluation for the abilities of inquiry which can not be evaluated by paper and pencil test. In the evaluation methods of performance test, tester evaluation, peer evaluation and self-evaluation can be applied to the science class in a multi-student class. In higher grade, however tester evaluation is more desirable than peer and self evaluation. It is found that peer evaluation and self-evaluation make possible the perfect study by feedback.

世界 主要 低氣壓 發生地域에서 有效포텐셜에너지의 定量的 硏究

閔庚德 慶北大學校 1984 論文集 Vol.37 No.-

Quantitative amounts of available potential energy in the earth’s major cyclogenetic areas and their downstream regions(less active cyclogenetic regions) have been investigated using twice daily Northern Hemisphere data during the First GARP Global Experiment(FGGE) year. The exact isentropic forms of available potential energy equation in the limited areas are employed to estimate the regional available potential energy values. The regional APE values in the two major cyclogenetic regions and their downstream regions are compared. The regional available potential energies in the climatologically active cyclogenetic areas are shown to exceed values from the downstream regions. The Asian east coast cyclogenetic area(WPO) has somewhat larger values than the North American east coast cyclogenetic area(WAO). The relatively larger values of APE in the major cyclogenetic regions reflect the large generation which occurs here. The monthly mean contributions of major cyclogenetic regions to the hemispheric total APE are also examined. The both hemispheric and barotropic contributions show negative values. The negative contribution is largest in magnitude during the winter months. Meanwhile, the baroclinic contribution exhibits in larger positive values in winter.

電氣比抵抗法을 利用한 地下地質構造 解析을 위한 模型硏究

閔庚德 연세대학교 대학원 1980 延世論叢 Vol.16 No.2

A model study based on an electrical resistivity was conducted for the interpretation of simple geologic structures. Experiments were carried out for the cases of two horizontal beds and dipping beds in a water tank by using Wenner and Schlumber gerarrays respectively. As a geologic stratum of experimental model, cement bed (cement:sand=1 : 2) of 70cm×60cm×10cm was used. It was found out from a preliminay experiment that a measuring sounding of Wenner array is one third of the distance between two current electrodes, and Schlumberger array is one fourth of the distance which is the a half of the value determined by usual method of calculation. Equi-resistivity curves were obtained for the cases of horizontal beds and dipping beds, and mapped on the longitudinal and cross sections of the water tank. These curves delineate the shape and degree of dip of led to some extent. The calculation of depth to beds by using a master curve is somewhat complicated and inexact. In this study, new method for this calculation using a ρα/ρ1-a graph was proposed, and turned out that this method is simpler and exact.

ESCP와 現行 韓國 地學敎育課程의 比較硏究

閔康德 慶北大學校 師範大學 1970 敎育硏究誌 Vol.11 No.-

Since 1968, earth science has been a compulsory course in high school, along with physics, chemistry and biology. Our nation's current auricular was prepared in 1963 with the sprit of John Dewey's theory of education, it emphasized the science of life and science of production but not science as science itself. The present movent to amend science curricular has seen the publication of PSSC physics, CHEMS chemistry and BSCS biology text books. These were the textbooks in line with the new ideas on science education emphasize the followings: 1) Science as inquiry 2) Basic concepts, theories and investigations of the interactions among the natural phenomena The earth science curriculum project (ESCP) organized for the purpose of writing a new earth science textbook and preparing other educational meterials that would bring the earth science curriculum into conformity with the new movement in science education. The amendment of the present korean earth science curriculum is a matter of necessity and urgency for the following reasons, 1) The national charter of education calls for sweeping reforms of nations education. 2) The modernization of Korea is impossible without rapid advance in natural science and technology. 3) The present curriculum is very far from conformity with the spirit of science education 4) Changes in korean educational system demend corresponding changes iff curricula to be taught The purpose of this study are to gain an understanding of the new spirit in earth science education, to identify the differences between ESCP and the present korean earth science curriculum, and this to determine what need to be corrected, in preparing a better earth science curriculum and textbook. As a result of the study, the author concluded that: 1) There is an urgent need to prepare a better textbook and curriculum in earth science 2) The revised curriculum must be designed te emphasize science as science itself and to help achieve the national goal of education in Korea as set forth in the national charter of education 3) The present earth science textbook with its emphasis on technology and de-emphasis on the process of science, failed to show the structure of knowledge of earth science. The new textbook must make greater efforts to show the structure of scientific knowledge and interrelationship among physics, chemistry, biology and earth science. 4) The revised curriculum should contain laboratory work, which is inevitable in helping the students to develope intuitive thinking, inquiry and active studying process.

신축성 변화에 따른 여고생 여름 교복의 착용감에 관한 연구

민경혜,조지현,류덕환 啓明大學校 生活科學硏究所 2002 科學論集 Vol.28 No.-

Clothes and environments as one system. Clothes play their role in adjustment to various environments and should be studied with humans as a research. The purpose of this study was to compare the wearing sensation depending on four different kinds of summer girls' high school uniforms on different cotton/polyester/polyurethane blend ratio for the different elasticity. The experiments were conducted to measure the comfort sensation. For this experiment, 4 healthy female students were taken as subjects. We checked the regional skin temperature, physiological responses(body temperature, blood pressure and pulse rate), subjective sensations(thermal, humid and comfort sensation) at 25℃, 65% R.H. The results are as follows: 1. The skin temperature of forehead and abdomen were continuously high, but those of forearm and leg were irregularly changed. 2. In the mean skin temperature, the more elasticity was, the lower it was. 3. Body temperature was slightly increased, however, the range of the increase was very little. 4. In the microclimate of all experiment clothes, the temperature and humidity in the back part of human body were higher than those in the back part. 5. The thermal sensation for the lowest elastic material was better than the others. The humid sensation was similar in four different materials. And The comfort sensation for the higher polyurethane blend ratio was better than the others.

地球物理學과 이의 應用에 關한 小考

閔康德 연세대학교 교육대학원 1979 연세교육과학 Vol.15 No.-

By definition, geophysics is the application of the principles and practices of physics to the solution of problems related to the earth. American Geophysical Union classified geophysics into eight subdivisions, namely meteorology, hydrology, oceanography, seismology, volcanology, geomagnetism, geodesy arid tectonophysics. The science of geophysics came into being as a result of the need of the geologist for new tools. Every earth scientist, especially the geologists, should be familiar with the various ways in which geophysics can help him understand the earth. Geophysical exploration may be defined as prospecting for oil, natural gas, mineral deposits and geologic structures by surface measurements of physical quantities. Geophysical exploration methods may be broadly classified under two beadings: major and minor. There are four· maior geophysical methods; gravitational, magnetic, seismic and electrical, and six minor methods; acoustic, dynamic vibration test, strain ganging, geothermal detection, gas detection and radioactivity mesurement. At present, the greatest use of geophysical exploration is male in oil exploration. It is also broadly used in the mining industry. A third major field for geophysical work is that of engineering, encompassing civil engineering, engineering geology, and allied fields such as mililary, structural, gas, and pipe-line engineerings, and the like. Geophysics and geophysical exploration, as new branchs of earth science have shown outstanding development in the fields of theory, exploration equipment, exploration technique and data interpretation. The development of computer and data processing technique have done a great role in the development of geophysics. As long as man has desire to understand the earth, and to seek the natural resources for his own existence, he should perceive the necessity and merit of geophysics, and also should do his best to develope it.

폐탄광지 토양에서 내생균근균 접종과 시비가 자귀나무 유묘 생육에 미치는 영향

임경민, 구창덕, 박용우 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1

Effects of arbuscular mycorrhizal inoculation and fertilization on the growth of Albizzia julibrissin seedlings were investigated in coal mine tailings soil. Spores inoculation of arbuscular mycorrhizal fungus, Glomus etunicatum, into sterilized tailings soil formed Arum-type mycorrhiza and vesicles massively in the roots. Fertilization did not affect spores formation but reduced mycorrhizal formation by 20% in the seedlings. Nitrogen-fixing root nodules formation was increased by mycorrhizal inoculation and fertilization treatment. Leaf nitrogen content in A. julibrissin seedlings were the highest in the fertilized treatment by 1.2%, phosphorus was the highest in the mycorrhiza inoculated by 1.3mg/kg, zinc content was the highest in the mycorrhiza inoculated by 0.030 mg/kg. And the nitrogen content was higher in fertilization treatments than in mycorrhizal inoculation only. Seedling height growth was higher in the fertilized treatment with 20.7 cm than in the other treatment with 11.5 to 16.7 cm. Shoot dry weight of seedlings in mycorrhizal inoculation+fertilization treatment with 8.9 g was higher than in mycorrhizal inoculation with 4.1 g. Root dry weight was highest in the mycorrhiza+fertilizer treatment with 8.1 g. S/ R ratio was 0.52 in the mycorrhizal inoculated compared to 0.91 in the mycorrhiza+fertilized treatment. This means that root development is relatively higher than shoot growth. Consequently, A. julibrissin seedling growth in coal mine tailings soil was greatly improved with the treatment of mycorrhizal inoculation and fertilization.

경북대 캠퍼스 내 대기환경 및 미규모 모델(MUKLIMO)을 이용한 바람장 모의 연구

민경덕,윤지원,안광득 한국환경과학회 2005 한국환경과학회지 Vol.14 No.3

Elements of atmospheric environment, temperature, humidity and wind, at the compus of KNU(Kyungpook National University) were investigated by the observations. The observed data were compared with those of DWS (Daegu Weather Station). The simulations of wind field and dispersions of polluted gases were conducted by MUKLIMO under the various conditions. The results show that the atmospheric environment of KNU are suitable but the campus does not play role as a heat sink in the city. The simulations of wind field show the air flows and wind channels in the campus clearly. The exhausted gases by motor vehicles on the northside street of campus affect very much to the campus with NW(300˚) wind. The running cars in the campus are also pollute much on the campus with the various wind directions. The characteristics of environmental conditions, various meteorological fields, wind channels, and dispersion of exhausted gases at the campus of KNU were understood quantitatively in the study.