• Title/Summary/Keyword: Science experiment test

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The Effects of Lumbar Vertebrae Mobilization and Lumbar Stabilizing Exercise on Lumbar Muscle Strength (요추가동술과 요부안정화운동이 요부근력에 미치는 효과)

  • Gong, Won-Tae;Lee, Sang-Yong
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.13 no.2
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    • pp.21-30
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    • 2007
  • Purpose: The purpose of this study was to evaluate effects of lumbar vertebrae mobilization and lumbar stabilizing exercises on the muscle strength. Methods: The subject were sixty healthy adult(30 females. 30 males) two decade from 21 to 35. All subjects randomly assigned the control group, lumbar vertebrae mobilization group, lumbar stabilizing exercises group. lumbar stabilizing exercises group received lumbar stabilizing exercises for 30 minutes, lumbar vertbrae mobilization group received lumbar vertbrae mobilization for 4-5 minutes per day and three times a week during 3 weeks period. BIODEX was used to measure muscle strength. All measurements of each subjects were measured at pre-experiment, after 10 day, and post-experiment. Results: The results of this study were summarized as follows; 1. The flexion strength test of control group, lumbar vertebrae mobilization group, lumbar stabilizing exercises group were no significantly differences at pre-experiment and after 10 days(p> .05), however significantly increased post-experiment(p <.05). The result of analyzed effects of flexion strength test was significantly increased accordining to experiment type(p <.05). 2. The extension strength test of control group, lumbar vertebrae mobilization group, lumbar stabilizing exercises group were no significantly differences at pre-experiment and after 10 days(p> .05), however significantly increased post-experiment(p <.05). The result of analyzed effects of extension strength test was significantly increased accordining to experiment type(p <.05). Conclusion: conclusionally these data suggest that a 3-week lumbar stabilizing exercises improved muscle strength. Additional randomized controlled trials to more fully investigate trement effects and factors that may mediate these effect are needed.

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Effect of Diet Regimen of Sasang Constitution on Health Status (사상체질별 식이 섭생이 건강에 미치는 영향 -한방건강증진센터 시범운영을 위한 기초연구-)

  • Kim, Kwuy-Bun;Cho, Kyoul-Ja;Lee, Hyang-Yeon;Shin, Hye-Sook;Kim, Kwang-Joo;Moon, Heui-Ja;Kim, Yoon-Hee;Kang, Hyun-Sook;Park, Shin-Ae;Ji, Eun-Sun
    • Journal of East-West Nursing Research
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    • v.7 no.1
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    • pp.18-31
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    • 2002
  • This study, as a basic research to manage a Chinese Medicine Health Promotion Center by way of showing an example, is a before and after experiment research for simple group to verify a difference with cholesterol, health status and perception of health in order to confirm a effectiveness of diet and regimen according to the 4th status of physical constitution. Research object was chosen of 42 persons who operate a physical constitutional dietary regimen among them after selecting professors and clinical nurses (55 persons) majoring in the science of nursing who participated in Chinese Medicine-oriented Nurse Training Course from Aug. of 2001 to Feb. of 2002 all over the country. Diagnostic tools for physical constitution was used of the questionary that is currently consisted of physical constitution grouping test in Eastern & Western Diagnose Center of K Medical Center, and rating of health status was used of the tool that standardized CMI(Cornell Medical Index) to be available for Korean, and perception measurement for health status was used of a visual analogue scale for the health status that each one perceive personally, and physiological status was measured of cholesterol in blood. Analysis for the collected data was carried out by percentage, $X^2$ test, paired t-test according to research object by using SPSS, and the results of this study are as follows. 1) There was no difference with cholesterol before or after the experiment for objects. As a result of estimation about difference with health status by areas before or after the experiment, there are more improved result in eyes, ears, digestive organs, bones and sinews organs, frequency of a disorder, habit, adaptation status, angry, healthy status than before the experiment. As a whole, after the experiment the health was more improved than before the experiment. As the result to inspect a difference of health perception between before and after experiment, after the experiment the health perception level was improved than before, however there was no meaningful differences. 2) As the result to inspect a difference of cholesterol between before and after experiment according to object's physical constitution, in the case of So-yang-in(a person with the minimum male: according to the male and female principles(the sun and the moon)) among the 4th status of physical constitution there was only meaningful difference statistically, however, after the experiment their cholesterol's value was increased. As the result to inspect the difference of health status between before and after the experiment according to physical constitution, all of Ta-um-in(a person with maximum the female), So-yang-in(with the minimum male), So-um-in(with the minimum female) had a meaningful difference before and after the experiment, which means that in all case by physical constitutional groups, after the experiment their health status was more improved than before the experiment. As the result to inspect a difference of health perception between before and after according to physical constitutions, in the case of Tae-um-in and So-um-in, average score after the experiment was risen than before the experiment so that it means that the level of health perception was improved, however, there was no meaning statistically. According to the above results, if continuous diet and regimen by each physical constitutions could be implemented, it is certain that the health could be maintained and promoted. And, what we are healthy is for oneself to feel it subjectively. However, I think that cholesterol score in blood that we can view objectively could be changed distinctly if we can implement a strict diet and regimen. Accordingly, it is necessary for a method and period of experiment to be more strict and longer. According to the above results, I would like to suggest as follows. 1) In order to understand health status by Korean's physical constitutions and to generalize it, these research will be repeated against much more objects that could be selected by proper grouping method to consider a representative. 2) It is necessary for a research to inspect health status by physical constitution by developing a health status measurement tool that has higher confidence and propriety based on physical constitutional theory.

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A Study on Improvement of Experimental Methods About the Production of Dihydrogen (수소 발생 실험의 개선에 관한 연구)

  • 고지연;김세경;고영신
    • Journal of Korean Elementary Science Education
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    • v.23 no.4
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    • pp.318-325
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    • 2004
  • The purpose of this study is to improve the experiment of dihydrogen production which was newly added to the 7th curriculum of the elementary science education. For this study, the teachers who had taught 6th grade students were asked about the difficulties they ever had in the dihydrogen production experiment by questionnaire. And the contents of the science textbook and teachers' guide book were analyzed. According to this investigation, the following controversial points were found. First, they didn't have exact explanations about the concentration of hydrochloric acid and the quantity of hydrochloric acid and magnesium in the science textbook and teachers' guide book. Second, the experiment which can show well the nature of dihydrogen was not included because of the safety problem. So this paper presents the ideal condition for the production of dihydrogen and an experimental method to show the nature of dihydrogen. The most ideal condition of dihydrogen production includes 40 mL of 2 molarity hydrochloric acid and 1 g of magnesium. It took 5' 42&apos; on average to gather two bottles (250 mL) of dihydrogen. In this condition it was possible to reduce the risk of accidents and to economize the materials. This paper proposes the experiment of dihydrogen explosion with a test tube and a film box which is not included in the 7th scince textbook. If teachers show the experiment of dihydrogen explosion with a test tube or film box to students at a class, it will be more interesting for students. And they will be able to help students to understand that dihydrogen can be gathered.

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Studies on the Relationship of the Seed Germination Testing Methods to the Field Emergence. (종자의 발아시험방법과 포장출현과의 관계)

  • 전우방
    • Asian Journal of Turfgrass Science
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    • v.3 no.1
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    • pp.13-15
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    • 1989
  • In oder to find out the effective seed germination testing method to the field emergence, an experiment was conducted ; 1. TTC testing results were higher percentage than any other germination testing methods . 2. On the corn seed , field emergence was highly correlated with germinator test, TTC test and AA test hut cold test was lower percentage . 3. Field emergence , on the soybean seeds was highly correlated with AA test and cold test but germinator test and TTC test was higher percentage .

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The Change of Electroencephalogram According to Bio-Feedback Training in Dementia (치매노인들의 바이오피드백 훈련에 따른 뇌파 변화)

  • Kim, Yeon-Ju;Yi, Seung-Ju;Park, Rae-Joon;Lee, Yoon-Mi
    • Journal of the Korean Society of Physical Medicine
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    • v.5 no.3
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    • pp.313-322
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    • 2010
  • Purpose : This study was to evaluate the effects of cognitive rehabilitation training on the cognitive decline of dementia patients. Therefore the purpose of this study was to examine the influence of brain activation according to bio-feedback training in dementia. Methods : Ten dementia patients were recruited this study. Experiment was performed for 30min per session, five times a week through 4 week and two measurements before and after bio-feedback training. Brain activity was measured by Korea Electroencephalogram(EEG) system. Statistical analysis was used Wilcoxon signed rank test to know difference of EEG between pre and post-test in each group and Mann-Whitney U test was to know difference between experimental and control group. Results : Significant improvement of slow-alpha wave was observed following bio-feedback in experiment group. There was no significant change in experiment and control group. Conclusion : In this study, the bio-feedback training was effective in improving slow-alpha wave in dementia patients. It is suggested that bio-feedback training with dementia patients can be useful to ameliorate the cognitive decline. And it will be effective for prevention of cognitive function decline.

Studies on Resistance of Sweet potato Varieties to Black Rot(Ceratocystis fimbriata E.) (고구마 품종의 흑반병 저항성에 관한 연구)

  • Park, K.Y.;Seong, R.C.;Ham, Y.S.;Chung, B.J.
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.23 no.2
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    • pp.118-125
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    • 1978
  • To find out highly resistant gene source to black rot fungus in sweetpotato varieties, a screening test was carried out with inoculated tubers and sprouts in 1976 and 1977. Fifteen varieties out of 165 and 54 varieties out of 161 were highly resistant to black rot in the tuber and sprout tests. respectively. The sprout test showed bigger variation from year to year compared to tuber test. Varieties highly resistant to black rot in both tuber and sprout tests were Suweon # 59, #81, #90, Norin #17, #23. Chilship-il cho, Sachun Jong #36, Hamkao, and Kandee.

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Launch Environment Test for Scale magNetospheric and Ionospheric Plasma Experiment (SNIPE) Engineering Qualification Model (초소형위성 SNIPE(Scale Magnetospheric and Ionospheric Plasma Experiment) 시제인증모델의 발사환경시험 및 분석)

  • Kim, Min-Ki;Kim, Hae-Dong;Choi, Won-Sub;Kim, Jin-Hyung;Kim, KiDuck;Kim, Ji-Seok;Cho, Dong-Hyun
    • Journal of Space Technology and Applications
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    • v.1 no.3
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    • pp.319-336
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    • 2021
  • This paper discusses the results of launch environment tests for the engineering qualification model (EQM) of nanosatellite Scale magNetospheric and Ionospheric Plasma Experiment (SNIPE) for scientific missions and lessons learned for the design of nanosatellites. SNIPE is a group of four formation-flying 6U nanosatellites with a range of payloads for missions including space weather measurement. We developed the EQM to verify the preliminary design prior to fabricating the flight model. Launch environment test of EQM was conducted for the first time in 2019, and all failures were corrected and verified at the second test conducted in 2021. A notable point of the two tests is that the nanosatellite deployer used in the first test is different from that of the second test. The second deployer has the capability to fix the internal satellite whereas the first deployer just contains and deploys the satellite. Thus actual mechanical loads the satellite receives is reduced for the second test compared to the first test. This work compares the mechanical responses of two tests and proposes general guidelines for structural design of nanosatellites.

An Experimental Study on the Fire Hazard of Electric Heating Pad (전기장판의 화재위험성 실험연구)

  • Lee, Bok-Young;Park, Chan-Ho;Park, Sang-Tae;Hong, Sung-Ho;Yu, Hyun-Jong
    • Fire Science and Engineering
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    • v.20 no.3 s.63
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    • pp.113-117
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    • 2006
  • This study presents analysis of fire hazard of electrical heating pad. In order to analyze fire hazard fire experimental and flammability experiment is conducted. The fire experiment is conducted to simulate normal condition and abnormal condition such as breakdown of thermostat. Vertical burning test(UL 94) is conducted for the fire retardant experiment. Kinds of electric heating pad used for experiment are electric mat, fabric pad, vinyl pad. The results show that fire hazard is high in case of breakdown of thermostat with the rating voltage supply. And Material of electric heating pad has not fire retardant performance.