• 제목/요약/키워드: Movement Characteristics

검색결과 2,301건 처리시간 0.023초

토양중 Pendimethalin의 흡착 및 이동특성 (The Adsorption and Movement Characteristics of Pendimethalin in Soils)

  • 라덕관;김영규
    • 한국토양환경학회지
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    • 제5권3호
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    • pp.17-23
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    • 2001
  • 토양중 pendimethalin의 흡착과 이동특성을 파악하기 위하여 사양토, 미사질토 및 양토를 대상으로 회분식 및 칼럼식 실험을 통하여 얻어진 결과는 다음과 같다. Pendimethalin은 진탕 6시간에서 사양토의 경우 59.6%, 미사질토의 경우 77.3%, 양토의 경우 64.0%가 흡착되어 평형흡착에 근접하는 경향을 나타냈으며, 흡착등온식은 Freundlich식에 잘 일치하였으나, Langmuir식에는 적합하지 않았다. 사양토, 미사질토 및 양토에 대한 pendimethalin의 흡착계수는 각각 8.0, 16.1, 9.5로 나타났다. 흡착칼럼 배출구에서 pendimethalin이 처음 검출된 시간 및 유출량은 사양토의 경우 112min. 700ml, 미사질토의 경우 630min, 2100m1, 양토의 경우 189min, 900ml이었다. 0.05Co를 파과점으로 할 경우 각 토양의 파과점에 도달되는 시간은 각각 256min, 810min, 420min이었다.

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The Effect of the Base of Support on Anticipatory Postural Adjustment and Postural Stability

  • Nam, Hye-Sun;Kim, Joong-Hwi;Lim, Yoo-Jung
    • The Journal of Korean Physical Therapy
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    • 제29권3호
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    • pp.135-141
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    • 2017
  • Purpose: This study was to identify the anticipatory postural adjustment (APA) mechanism which is represented by the onset time of trunk muscles and the displacement of the center of pressure (COP) according to the different base of support (BOS) during upper extremity movement. Methods: Thirty healthy subjects (14 males, 16 females) participated in this study. The movement was performed for 10 trials during each of various BOS (shoulder - width double leg stance, narrow base double leg stance, tandem stance, non-dominant single leg stance) at the 1.2 Hz frequency. Electromyography was used to measure muscle onset time and biorescue was used to measure characteristics of the displacement of COP. Surface bipolar electrodes were applied over the right deltoid anterior, right latissimus dorsi, both rectus abdominis, both internal oblique and both erector spinae. The data were analyzed by repeated one-way ANOVA and Duncan's post hoc test. Results: The study has revealed following. There were significant differences with muscle onset time in each BOS (p<0.01). There were significant differences in characteristics of the COP in each BOS (p<0.01). Conclusion: The study found that the more narrowed the basis requires the more rapid anticipatory postural control in contralateral postural muscle when the upper extremity movement is performed.

Characteristics of periodical movement of live squid (Todarodes pacificus) hooked on the branch line of a red sea bream long line

  • Koo, Myung Sung;Ishizaki, Munechika;Kim, Suk Jong;Fuwa, Shigeru;Archdale, Miguel Vazquez
    • 수산해양기술연구
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    • 제49권3호
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    • pp.227-237
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    • 2013
  • In Jeju Island, red sea bream is mainly caught by long line with a live squid as bait. The movements of artificial jigs in the fishery are supposed to be an important factor for catching the target organism as well as bait. To develop new fishing method for long line fishery, movements of the bait which was squid were tried to be characterized. In a water tank experiment, a live squid was hooked by a fish hook attached to a model long line. And then movements of squids in the water tank were recorded for 20 minutes by a video camera. Recorded movement of the squid was just periodically up-and-down moving, with a dominant frequency of 0.125Hz, and amplitude of 10.8cm.

감쇠력 가변댐퍼를 이용한 반능동 현가장치의 실차실험 특성에 관한 연구 (A Study on the Field Test Characteristics of Semi-Active Suspension System with Continuous Damping Control Damper)

  • 이광헌;이춘태;정헌술
    • 유공압시스템학회논문집
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    • 제7권4호
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    • pp.32-38
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    • 2010
  • A semi-active suspension is an automotive technology that controls the vertical movement of the vehicle while the car is driving. The system therefore virtually eliminates body roll and pitch variation in many driving situations including cornering, accelerating, and braking. This technology allows car manufacturers to achieve a higher degree of both ride quality and car handling by keeping the tires perpendicular to the road in corners, allowing for much higher levels of grip and control. An onboard computer detects body movement from sensors located throughout the vehicle and, using data calculated by opportune control techniques, controls the action of the suspension. Semi-active systems can change the viscous damping coefficient of the shock absorber, and do not add energy to the suspension system. Though limited in their intervention (for example, the control force can never have different direction than that of the current speed of the suspension), semi-active suspensions are less expensive to design and consume far less energy. In recent time, the research in semi-active suspensions has continued to advance with respect to their capabilities, narrowing the gap between semi-active and fully active suspension systems. In this paper we are studied the characteristics of vehicle movement during the field test with conventional and semi-active suspension system.

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집중호우시 발생하는 난지도 매립지내의 지하수 거동 (Estimation of the Groundwater Movement Under the Heavyrainfall at Nanji Waste Landfill)

  • 구태훈;조원철
    • 한국지하수토양환경학회지:지하수토양환경
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    • 제6권3호
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    • pp.107-117
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    • 2001
  • 집중호우시 난지매립장내의 지하수 거동의 특징은 HELP 프로그램을 사용하여 침출수를 계산하였다. 본 연구에서는 기존연구에서 사용한 평균 침출수량 대신 집중호우기간동안 평균보다 70배정도 많은 양을 나타내는 실제 일별 침출수양을 입력하여 계산하였다. 이때의 지하수 거동특성은 MODFLOW를 사용하여 모사하였다. 그리고 난지도 매립장에 슬러지층의 새로운 층을 입력하였다. 이번 연구의 결과는 기존의 연구결과와 다르게 지하수위가 훨씬 높게 나타난다.

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DSC(Dye-sensitized Solar Cell)의 Grid 간격 변화에 따른 광전특성 연구 (A study on the photoelectric characteristics as a result of changing grid gap)

  • 서현웅;김미정;최진영;홍지태;박성진;김희제
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2006년도 춘계학술대회
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    • pp.199-201
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    • 2006
  • A lot of researches and experiments have been performed to make more efficient dye-sensitized solar cell. Among them, insertion of a grid electrode in DSC is one method to increase overall performance as being shortened distance of electrons' movement by diffusion. In this paper, we measured overall characteristics which is included voltage-current characteristic curve, efficiency, fill factor by comparison between DSC without and with grid electrode. As a result, we got maximum 1.8 times increase of efficiency and approximately 1.7 times rise of fill factor. And we experimented 8, 10, 12, 14mm of grid gap and compared their results to optimize grid gap which is able to incite the most effective movement of electrons. Consequently, we got the result that electrons' movement is the most effect ive when grid gap is approximately 12mm.

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일제강점기 한의약계 독립운동 유형과 특징 (Types and Characteristics of the Korean Medicine community Independence Movement During the Japanese colonial period)

  • 박경목
    • 한국의사학회지
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    • 제36권2호
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    • pp.27-48
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    • 2023
  • This study identifies 164 Korean medicine practitioners among the independence activists and describes the types and characteristics of their independence movements. Their occupations included apothecary pharmacist, herbalist, and medicine dealer. They originated from Gyeongbuk, Hamnam, Pyeongnam, and Gyeongnam, with a higher proportion of Hamnams compared to independence fighters. Their ages are concentrated in the 30s and 40s. Their movements are similar to those of independence heroes, in the order of domestic resistance, the March 1 Movement, and Manchurian resistance. The crimes are Security Law, Exorcism No. 7 of the 8th Reign of Daejeong, Public Order Maintenance Law, and attempted murder. In terms of sentences, the proportion of those sentenced to five years or more in prison is higher, and the proportion of those sentenced to less is lower. The above independence movements in Korean medicine practitioners are characterized by (1) the use of direct force, (2) long-term and planned struggle, (3) the provision of contact points and funding sources, (4) a nationalist line, and (5) low socialist-communist share.

뇌성마비 유형 중 편마비 아동을 위한 수정된 강제유도 운동치료의 효과에 대한 체계적 고찰 (A Systematic Review of Modified Constraint- Induced Movement Therapy in Children With Hemiplegic Cerebral Palsy)

  • 홍소영;김경미
    • 대한감각통합치료학회지
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    • 제10권2호
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    • pp.11-22
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    • 2012
  • 목적 : 본 연구는 체계적 고찰을 통해 뇌성마비 유형 중 편마비 아동에게 적용된 수정된 강제유도 운동치료의 프로토콜(protocol)과 중재 효과를 알아보고자 한다. 연구방법 : 검색용어는 "Constraint Induced Movement Therapy", "modified Constraint Induced Movement Therapy", "Cerebral Palsy", "Hemiplegia"를 사용하였고, 수정된 강제유도 운동치료가 처음 제시된 2001년부터 2011년 5월까지 학회지에 게재된 논문을 PubMed, Medline, Ovid를 이용하여 검색한 후 자료를 분석하였다. 결과 : 총 10개의 연구가 분석되었고, 뇌성마비 편마비 아동에게 수정된 강제유도 운동 치료를 적용한 결과 상지운동 기능 및 움직임의 질이 향상되었고, 일상생활에서 환측의 상지 사용 빈도가 증가하였음을 나타내었다. 결론 : 분석논문의 수가 적어 다양한 질적 수준의 연구를 포함한 제한점은 있지만, 아동의 특성에 맞도록 제한시간과 제한방법을 조절하고 다양한 치료 활동을 적용한다면 수정된 강제유도 운동치료가 뇌성마비 편마비 아동의 기능회복에 효과적으로 사용되어질 수 있을 것으로 기대된다.

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뇌졸중 환자의 누운 자세에서 앉기 동작의 생체 역학적 분석 (Biomechanical Analysis of Sitting Up from a Lying Posture in Stroke Patients)

  • 박승규;양대중;강정일;이준희;윤종혁
    • The Journal of Korean Physical Therapy
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    • 제25권2호
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    • pp.103-109
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    • 2013
  • Purpose: This study was conducted in order to suggest an effective method of daily life movement training for stroke patients by comparison and analysis of the biomechanic characteristics of sitting up from a lying posture in stroke patients and healthy elderly participants. Methods: Fifteen stroke patients and 15 age-matched elderly participants were included in the study. The movement of sitting up from a lying posture was divided into three stages, and the differences in muscle activity in the sternocleidomastoid (SCM), rectus abdominis (RA), external oblique (EO), and rectus femoris (RF) during the movement were analyzed. Results: Subjects in the experimental group showed slower speed than those in the control group. In the neck joint, the change of angle in movement showed a larger decrease at all stages in the experimental group than in the control group; the movement also decreased in stages I and II in the upper trunk joint. The movement also showed a statistically significant decrease in stage II in the lower trunk, pelvic, and hip joints. The SCM showed higher activity in the control group than in the experimental group, showing a statistically significant difference; the RA showed high activity in the experimental group. The RF showed higher activity in the control group than in the experimental group, showing a statistically significant difference. Conclusion: From the results obtained above, increasing movements in the neck, pelvic, and hip joints and strengthening of lower body muscles are required in order to improve the ability for getting up from a lying posture in stroke patients.

북미춘포(北尾春圃)의 신간동기(腎間動氣) 복진법(腹診法)에 대한 고찰(考察) (A Study on the Abdominal Diagnostic Method of Kitao Shunpo about the Movement Qi between kidneys)

  • 김혜일;백유상
    • 대한한의학원전학회지
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    • 제29권3호
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    • pp.113-132
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    • 2016
  • Objectives : In this study, the Abdominal Diagnostic Method of Kitao Shunpo(北尾春圃) about Movement Qi between kidneys in Sanghauidam(桑韓醫談) and Jeonggisinron(精氣神論) are investigated for the purpose of understanding the definite technique of the method and the position in the context of abdominal diagnosis in Japan. Methods : The materials related to the abdominal diagnosis to Movement Qi between kidneys were selected from Sanghauidam and Jeonggisinron written by Kitao Shunpo, and analyzed to know the characteristics of the method. Results : Kitao Shunpo suggested the theoretical background of the Abdominal Diagnostic Method that Original Qi(元氣) is made from Original Essence(元精) when a person is born, and mentality(神) and body essence(精), qi(氣) and blood(血) are formed from those. Movement Qi between kidneys(腎間動氣), that is to say innate Original Qi can be diagnosed in abdominal region by the method in Japanese Medicine. Kitao Shunpo decided deficiency and excess of Original Qi and prognosis in clinical treatment by the method, and suggested the standard pulse condition of the Movement Qi between kidneys. Conclusions : After the theory about Movement Qi between kidneys appeared in Nanjing(難經), many doctors have not made attention to diagnose that for a long time, until Kitao Shunpo with other Japanese doctors established the theoretical background of the Abdominal Diagnostic Method, and applied the theory to clinical treatment.