• Title/Summary/Keyword: Strokes

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Kinetic comparative analysis of tennis backhand stroke for interdisciplinary convergence research (학제간 융합연구를 위한 테니스 백핸드 스트로크 동작의 운동역학적 비교 분석)

  • Cha, Jung-Hoon
    • Journal of Digital Convergence
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    • v.13 no.7
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    • pp.373-380
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    • 2015
  • This study which was conducted on male tennis player on one hand(OH) & two hand(TH) backhand stroke and how both motion differed on low extremity movement with each feature analyzed in detail, the result as follow. The motion of TH based on resultant velocity, appeared to be a higher than OH, which was important variable in determining the ball speed. Contrary to TH where the player minimized the motion in the lower body and finalized a stroke through the turn of the trunk as if sticking the ball closed to the body, OH was carried out such that the player appeared to chase the ball. Whereas in OH, the knee joint extension moment was not found to be larger than TH, the opposite result came out for abduction moment and internal rotation moment. In the case of hip joint, consisted of extension, abduction and internal rotation moment, the outcome emerged to be greater for TH with conspicuous difference in abduction moment. Flection moment for TH overwhelmed in TH though both adduction and external rotation moment brought about similar outcome for both strokes.

Inhibition effect of neuronal death by Scutellaria baicalensis GEORGI Water-Extract in a Hypoxic Model of Cultured Rat Cortical Cells (흰쥐 대뇌세포의 저산소증 모델에서 황금(黃芩)에 의한 신경세포사 저해 효과)

  • Kim, Wan-Sik;Jung, Seung-Hyun;Shin, Gil-Jo;Moon, Il-Soo;Lee, Won-Chol
    • Journal of Life Science
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    • v.17 no.1 s.81
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    • pp.143-149
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    • 2007
  • Scutellaria baicalensis GEORGI(SB) is used in oriental medicine for the treatment of incipient strokes. Although it has been reported that SB is neuroprotective in a hypoxia model, its mechanism is poorly understood. Here, we investigated the effect of SB on the modulation of retinoic acid receptor a (RARa). Rat cerebrocortical cells were grown in neurobasal medium. On DIV12 cells were treated with SB $(20{\mu}g/ml)$ and given a hypoxic shock $(2%\;O_2/5%\;CO_2,\;3hr)$ on DIV14. In situ hybridization using cRNA probe revealed that RARa mRNA punctae are distributed, in addition to nucleus, throughout neuronal dendrites, where SB upregulated its density by 69.8% (p=0.001) and 129.8% (p=0.001) in both normoxia and hypoxia, respectively. At the protein level, SB upregulated RARa in the neuronal soma by 78.8% (p=0.004) and 23.6% (p=0.001) in both normoxia and hypoxia, respectively. These results indicate that SB upregulates RARa in both normoxia and hypoxia, which might contribute to the neuroprotection.

Relationship of Cotyledon Number with Procambium Differentiation in Somatic Embryogenesis of Codonopsis lanceolata L. (더덕의 체세포배발생에서 전형층분화와 자엽수의 관계)

  • Choi Pil-Son;Soh Woong-Young;Cho Duck-Yee;Liu Jang-Ryol
    • Journal of Plant Biotechnology
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    • v.32 no.2
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    • pp.135-138
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    • 2005
  • Embryogenic callus was obtained from cotyledonary explants of Codonopsis lanceloata on Murashige & Skoog's medium supplemented with 1 mg/L 2,4-D. Suspension cultures of the embryogenic calli were grown on a shaker at 100 strokes/min, and then the calli were subcultured for 2 weeks in 2,4-D-free medium to produce somatic embryo. In somatic embryos at the globular stage, cotyledon initials began to differentiate themselves in the near distal end of the procambial strand. Dicotyledons, tricotyledon, tetracotyledon and fused cotyledon were differentiated from the distal ends of two, three, four and circular procambial strands, respectively. Nearly circular procambial strand in lower hypocotyls were independently differentiated into two, three, four procambial tissues at cotyledonary node and cotyledons to form somatic embryos with dicotyledon, tricotyledon, tetracotyledon. If the distal subepidermal cells of globular embryo exclusively became cotyledon initials, the torpedo or cotyledonary embryo was characterized by somatic embryos with fused cotyledon.

The Effects of Applying a Home Care Protocol on the Nursing Care of Stroke Patients (뇌졸중환자의 가정간호 프로토콜 적용 효과)

  • Kang Hyun-Sook;Kim Jeong-Hwa;Kwon Hei-Jeoung;Sok So-Hyun
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.5 no.1
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    • pp.7-17
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    • 1998
  • Since patients who have suffered from strokes have chronic health problems, the development of a protocol for home care nursing is required. Therefore, this study was done to test the effects of such a protocol on stroke patients. This study was conducted by using a single group pre-post design. The subjects for the study were 13 home care nurses and 30 home care patients who had a stroke. Data collection was done from October 1997 to February 1998. The collected data was analyzed using the Wilcoxon signed rank test and paired t-test and the results were as follows : 1. The first hypothesis that 'working satisfaction of home nurses would be higher after using the home care protocol' was supported. 2. The second hypothesis that 'patients' satisfaction would be higher after using the home care protocol' was rejected. 3. The third hypothesis that 'the level of ADL of patients would be higher after using the home care protocol' was supported. In conclusion, by using a home care protocol, the satisfaction of nurses' work and the ADL of patients increased, and the patients' satisfaction also increased without statistical significance. The above results confirm that the application of a home care protocol is very effective. Thus, this protocol can be helpful in the quality care of stroke patients. Therefore, developing and organizing protocols, according to health problem, can be useful for beginner nurses who interact with high risk patients.

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Effect of Visual Biofeedback Training in Real Time on Buttock Pressure and Pelvic Tilting Angles of Hemiplegic Patients During Sitting

  • Cho, Min-su;Park, Kyue-nam;Choung, Sung-dae;Kwon, Oh-yun
    • Physical Therapy Korea
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    • v.24 no.2
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    • pp.66-75
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    • 2017
  • Background: After a stroke, the control of the trunk muscle may be severely impaired. Due to the importance of trunk control in complex daily postures, the ability to adopt a correct sitting posture is considered a determinant of the recovery of independent function after a stroke. Objects: The purposes of this study were to compare differences in buttock pressure between the left and right sides of hemiplegic patients and differences in their pelvic tilting angles (sagittal and coronal planes) after sitting training with visual biofeedback (VBF) in real time. Methods: Twenty-two individuals with unilateral strokes (11 left-side and 11 right-side hemiplegic stroke patients) participated in this study. Buttock pressure was measured using a pressure mat, and pelvic angles were measured using a palpation meter. Results: The asymmetry of pressure between the right and left (first and third chamber) sides was significantly decreased after the VBF training. The measurements obtained using the palpation meter revealed a significant decrease in the pelvic angles pre- versus post-intervention. Conclusion: VBF training may be distribute a patient's buttock pressure equally while in a sitting posture and increase the length of time a stroke patient can maintain a symmetrical sitting posture. It can also improve pelvic control while sitting in a neutral position.

Hydraulic Cylinder Design of Lifting Pump Mounting and Structural Safety Estimation of Mounting using Multi-body Dynamics (다물체 동역학을 이용한 양광펌프 거치대의 유압 실린더 설계 및 구조 안전성 평가)

  • Oh, Jae-Won;Min, Cheon-Hong;Lee, Chang-Ho;Hong, Sup;Kim, Hyung-Woo;Yeu, Tae-Kyung;Bae, Dae-Sung
    • Journal of Ocean Engineering and Technology
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    • v.29 no.2
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    • pp.120-127
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    • 2015
  • When a deep-seabed lifting pump is kept this device has bending and deformation in the axis due to its long length(8m). These influences can be caused a breakdown. Therefore, a mounting must be developed to keep the lifting pump safe. This paper discusses the hydraulic cylinder design of the lifting pump and structural safety estimation of the mounting using SBD(simulation-based design). The multi-body dynamic simulation method is used, which has been used in the automotive, structural, ship building, and robotics industries. In this study, the position and diameter of the hydraulic cylinder were determined based on the results of the strokes and buckling loads for the design positions of the hydraulic cylinder. A structural dynamic model of the mounting system was constructed using the determined design values, and the structural safety was evaluated using this dynamic model. According to these results, this system has a sufficient safety factor to manufacture.

Decipherment of the Wooden Tablet Prescription Excavated at Anapji (안압지 출토 목간(木簡) 처방전의 석독(釋讀)에 대한 연구)

  • Lee, Deok-Ho;Lee, Sun-A;Kim, Nam-Il
    • Korean Journal of Oriental Medicine
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    • v.15 no.2
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    • pp.85-91
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    • 2009
  • The manufacture date of the number 198 wooden tablet excavated at Anapji is estimated to be between year 751 and 774. As medical artifacts around this period of time is scarce, the discovery of an artifact with distinct medical information such as names of medicinal drugs recorded in hand writing holds great value in the history of medicine. This wooden tablet was presumably a prescription for a medicinal formula. That the '灸' character which is a method of processing drugs is found after '甘草' indicates the possibility of this wooden tablet to be a practical form of prescription. On this slip, a certain sign can be found at the upper right corner of the names of drugs. This is thought to be an additional sign added to the original text. It seems to have been originated from the letter '了', based on the composition and finishing touches of the strokes, presumably to confirm the end of a work by adding the letter '了' which means 'to finish'. The base material of 靑黛 and 藍淀 are the same, and the two often took each other's place in a prescription. It is difficult to find an example of a formula where both drugs are included. Therefore, the prescription on the front with 靑黛, and the one on the back with 藍淀 of tablet 198 can be understood as separate formulas.

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Implementation of Non-Invasive Pressurized Cerebral Perfusion Platform (가압식 비침습적 대뇌 혈류 증가 장치의 구현)

  • Lee, Jean;Yu, Hyung-gon;Kim, Young-kil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.21 no.9
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    • pp.1752-1760
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    • 2017
  • One of the treatments and preventions of strokes such as ischemic stroke is to increase cerebral blood flow. This aims to minimize the size of the stroke by increasing the quantity of blood to the cerebral region circuitously. Several ways to increase cerebral blood flow are a therapy though drugs and through surgery. However these invasive method giving a burden to the patient, the problem of inducing a number of complications were noted. In this thesis, we propose a non-invasive brain flow enhancer to complement the disadvantages of such invasive treatment methods. To compensate for the shortcomings of the existing devices, the patient's blood pressure is accurately measured and the blood pressure is applied to the extremities, thereby increasing blood flow to the femoral region to produce blood clotting treatments. Although somewhat inadequate blood flow increases compared to conventional devices, blood flow can be significantly increased, which can be selectively.

Implementation of Non-Invasive Pressurized Cerebral Perfusion Platform (가압식 비침습적 대뇌 혈류 증가 장치의 구현)

  • Lee, Jean;Yu, Hyeong-gon;Kim, Young-kil
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2017.05a
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    • pp.171-174
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    • 2017
  • One of the treatments and preventions of strokes such as ischemic stroke is to increase cerebral blood flow. This aims to minimize the size of the stroke by increasing the quantity of blood to the cerebral region circuitously. Several ways to increase cerebral blood flow are a therapy though drugs and through surgery. However these invasive method giving a burden to the patient, the problem of inducing a number of complications were noted. In this thesis, we propose a non-invasive cerebral blood flow augmentation device to compensate for the disadvantages of these invasive treatments. To compensate for the shortcomings of the existing cerebral blood flow device, apply a positive measure of the patient's extremities to measure the blood pressure of the patient's blood pressure and conduct a frontal injection of blood flow to increase blood flow. Although somewhat inadequate blood flow increases compared to conventional devices, blood flow can be significantly increased, which can be selectively.

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A clinical case study of chronic inflammatory anemia in post-symptom period resulting Stroke of Soeumin patient (소음인환자(少陰人患者)의 중풍후유기(中風後遺期)에 병발(倂發)한 만성(慢性) 염증성(炎症性) 빈혈(貧血)에 대한 증례(症例))

  • Park, Eun-kyung;Park, Seong-sik
    • Journal of Sasang Constitutional Medicine
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    • v.11 no.2
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    • pp.377-383
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    • 1999
  • The anemia which is accompanied with chronic primary diseases has been showed most frequently in the clinic. The purpose of this study is to give an account of the effects of the Korean herbal medicine therapy which is based on the constitutional medicine for the patient who has suffered from mild anemia, pneumonia and general depressed condition in the chronic stage of post-cerebellar hemorrhage. The subject is a 75-year-old woman who has had the symptoms caused by hemorrhage, which are headache, dizziness, walking disturbance, dysphasia, and general weakness and so forth. Therefore, she has normocytic normochromic anemia in the hematomancy. We have diagnosed her as Soeumin(少陰人) Ulkwangjeung(鬱狂症) and have prescribed Palmulgunjatang(八物君子湯) in accordance with the principle of Seungyangikgi(升陽益氣). The consequence is that the accompanied anemia and genseal depressed condition have improved.

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