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Finite element analysis of the artery and PTFE end-to-side anastomosis with $45^{\circ}$ anastomotic angle. ($45^{\circ}$ 문합각을 가진 동맥과 PTFE 단측 문합의 유한요소해석.)

  • Han, Geun-Jo;Kim, Hyung-Tae;Shin, Jung-Woog;Kim, Young-Ho
    • Proceedings of the KOSOMBE Conference
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    • v.1995 no.05
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    • pp.104-108
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    • 1995
  • Von Mises stress and compliance distribution was evaluated using a finite element analysis on the anastomosis of an artery with length of 20mm, inner diameter of 4mm, thickness of 0.5mm and a PTFE graft with length of 5.7mm, Inner diameter of 2mm. thickness of 0.2mm. When anastomotic angle was taken as $45^{\circ}$ and inner pressure of $1330\;dyne/mm^2$ was applied inside the 2 conduits. From the analysis results were obtained as follows. (1)Artery diameter increased in both horizontal x and vertical y directions and the magnitude of that in x direction was bigger than in y direction. (2) The compliance was maximum on the anastomosis. especially on that with acute angle. This reduced approaching to the right or left end. (3) The equivalent stress was maximum on top in the y direction and winimum on the nodes around $110^{\circ}$ in circumferential direction from the top. (4) The equivalent stress was maximum in the vicinity of anastomosis with acute angle along the longitudinal direction of the artery. This trend was also observed along the PTFE graft.

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A Study on the Textile Design utilizing Radial Grating for $Moir{\acute{e}}$ Patterns (방사형 격자패턴 무아레무늬 표현을 위한 직물 디자인 연구)

  • Kim, Beong-Mee;Lee, Mi-Ja
    • Journal of the Korea Fashion and Costume Design Association
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    • v.10 no.1
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    • pp.117-123
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    • 2008
  • When it comes to clothing design, after the mid 20th century some internationally renowned designers began to recognize the pivotal role clothing materials play in attracting the hearts of customers. Accordingly, they started to take advantage of new clothing materials in the sector of clothing design. While the theme of fashionable clothing products shifts from style and color to clothing materials, fashion designers place the quality of materials at the center of clothing designs. Fashion designers also realize that good quality of materials should be used to boost the value of products as well as to satisfy the conditions of creativity, practicality and aesthetics. In particular, as the non-apparel industry in which clothing materials are the most important aspect between fashionable color, silhouette and details is enhancing their attention to develop various materials in order to meet the needs of customers, the fashion industry places a high premium on textile design which is the pinnacle of expressing emotion on clothing materials. In addition, the industry raises awareness of developing more sophisticated and differentiated materials. Our thesis covers the way how to apply $moir{\acute{e}}$ pattern to clothing design on the basis of research. In order to put that research into practical use, we produced textiles which effectively display $moir{\acute{e}}$ pattern. Before this process, we tried to ensure that radial grating created $moir{\acute{e}}$ pattern effects. To this end, the weaving process was applied, depending on whether light can penetrate textiles or not. Then, we manufactured test-products using $moir{\acute{e}}$ pattern.

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From anti-catholicism to cultural and sexual reflexion in Spain in the movie by Pedro Amodóvar (영화 『나쁜 교육』: 신성모독을 통한 반가톨릭정서의 표현에서 문화적 반영으로)

  • Song, Sun-ki
    • Cross-Cultural Studies
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    • v.23
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    • pp.167-189
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    • 2011
  • In modern Spanish culture, there is not other cineaste who has explored the controversial topic of sexuality deeper and more reiterative ways than Pedro $Almod{\acute{o}}var$. In our opinion, $Educaci{\acute{o}}n$> fundamentally, is a metaphoric work about the corruption of the Catholicism during Francisco Franco regime in Spain. This movie is a brilliant and solid critic to the abuses suffered by a child in a religious school during the Franco regime. This movie is about the forbidden desire in Catholicism and the tragic end of a priest. Father Manolo sexually abused one of his students at the school; as a result, this student loses his sexual identity and ends up ruining his own life due to using drugs. Eventually he is revenged by his younger brother. On this movie, $Educaci{\acute{o}}n$>, Pedro $Almod{\acute{o}}var$ portrays a sentiment of anticlericalism and blasphemy against God and Jesus Christ through a story which contains homosexual scenes and direct quotations of biblical cites, such as the expulsion of the merchants and sellers out of the temple in Jerusalem in the Mathew gospel to insinuate Jesus'lack of charity and love to others. We conclude that Almodovar's description of the fallout of this priest, caused by his forbidden desire, is not only beyond anti-Catholicism but it can also be seen as an actual reflection of the cultural and sexual change in the European and, in particular, Spanish society.

Systematic Review and Meta-analysis of Electoacupunture Efficacy on Acute Gout (급성 통풍에 적용한 침전기자극술에 대한 체계적 문헌 고찰 및 메타 분석)

  • Hwang, Ji Hye;Song, Aejin;Song, Ho-Sueb
    • The Journal of Korean Medicine
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    • v.43 no.2
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    • pp.92-109
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    • 2022
  • Objectives: The objective of this study was to appraise the effect of electroacupuncture (EA) for the treatment of acute gout. Methods: Since no suitable study could be found in the domestic database, we performed a literature search up to the end of December 2020 using four international electronic databases. Randomized controlled trials (RCTs) evaluating the effectiveness of EA in the treatment of acute gout were included. The risk of bias was evaluated from the Cochrane risk of bias tool. Results: Eight appropriate RCTs were included and analyzed. Three evaluation tools were mainly used: Total Effective Rate (TER), Uric acid (UA), and Pain score (VAS). In the case of TER, in all eight cases, electroacupuncture alone and combined treatment showed a statistically significant level of improvement compared to Western medicine treatment. In the case of VAS score, electroacupuncture alone and combined treatment showed a more significant effect than Western medicine treatment. In the case of UA level, electroacupuncture combined treatment showed a more significant effect than western medicine treatment. Although not all three evaluation tools were used in all studies, the majority of studies showed that electroacupuncture was effective for acute gout patients. Conclusions: The results of this study suggest that EA treatment may be effective for acute gout. It should be noted, however, that the studies included in this study were geographically biased, small in number, and mostly at high risk of bias. More well-designed studies are needed in the future.

The Effect of the Diameter and Anastomotic Angle on the Compliance and the Stress Distribution of the End-to-side Anastomosis. (직경 및 문합각도가 단측 문합의 컴플라이언스 및 응력분포에 미치는 영향)

  • 한근조;김영호
    • Journal of Biomedical Engineering Research
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    • v.19 no.2
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    • pp.183-188
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    • 1998
  • Von Mises stress and compliance distribution was evaluated using a finite element analysis on the end-to-side anastomosis of an artery with length of 20-24mm, inner diameter of 4mm, thickness of 0.5mm and a PTFE graft with length of 10mm, inner diameter of 2mm, thickness of 0.2mm when the anastomotic angle was taken from 30$^{\circ}$~90$^{\circ}$ in every 10$^{\circ}$ and the diameter ratio from 0.1-1 in every 0.1. The inner pressure of 1330 dyne/$\textrm{mm}^2$ was applied inside the 2 conduits. It was found that the compliance whose magnitude is larger on the acute angle anastomotic side than on the abtuse angle side became larger as the anastomotic angle became smaller and the diameter ratio larger and that the equivalent stress on the acute angle anastomotic side was larger than that on the abtuse angle side and became larger as the anastomotic angle and the diameter ratio became larger.

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Finite Element Analysis of the Artery and PTFE End-To-Side Anastomosis with 45${\circ}$ Anastomotic angle (45${\circ}$ 문합각을 가진 동맥과 PTFE 단측 문합의 유한요소해석)

  • Han, Geun-Jo;Kim, Hyeong-Tae;An, Seong-Chan;Sin, Jeong-Uk;Kim, Yeong-Ho
    • Journal of Biomedical Engineering Research
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    • v.18 no.3
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    • pp.253-259
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    • 1997
  • Von Mises stress and compliance distribution was evaluated using a finite element analysis on the anastomosis of an artery with length of 20mm(z direction, along the horizental artery), inner diameter of 4mm, thickness fo 0.5mm and a PTFE graft with length of 5.7mm, inner diameter of 2mm, thickness of 0.2mm when anastomotic angle was $45^{\circ}$ and inner pressure of 1330 dyne/mm2 was applied inside the 2 conduits. From the analysis results were obtained as follows. (1) Artery diameter increased in both horizontal x(along the length of artery) and vertical y(perpendicular to the length of artery)directions and the magnitude of that in x direction was bigger than that in y direction. (2) The compliance was maximum on the anastomosis, especially on that with acute angle. The reduction of compliance was observed from the anastomosis area to the either right or left end. (3) The equivalent stress was maximum on top in the y direction and minimum on the nodes apart $110^{\circ}$ in circumferential direction from the top. (4) The equivalent stress was maximum in t도 vicinity of anastomosis with acute angle along the longitudinal direction of the artery. This trend was also observed along the PTFE graft.

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The Effect of Positive end Expiratory pressure on the Pulmonary Capillary Pressure in Acute Lung Injury Patients (급성폐손상환자에서 호기말양압의 변화가 폐모세혈관압에 미치는 영향)

  • Chung, Byung-Chun;Byun, Chang-Gyoo;Lee, Chang-Youl;Kim, Hyung-Jung;An, Chul-Min;Kim, Sung-Kyu;Shin, Cheung-Soo
    • Tuberculosis and Respiratory Diseases
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    • v.49 no.5
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    • pp.594-600
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    • 2000
  • Background : Positive end expiratory pressure (PEEP) ventilation is well established as an integral part of the management of patients with the acute lung injury. PEEP is a key element in the treatment of hypoxemia resulting from pulmonary edema. Pulmonary capillary pressure (Pcap) is the most important factor influencing lung edema formation, and an understanding of how Pcap is altered by variations of PEEP or pulmonary arterial occlusion pressure (PAOP) is important to improve the treatment of acute lung injury patients. This study was performed to evaluate the effects of PEEP on the pulmonary capillary pressure in acute lung injury patients. Methods : This was a prospective study of 11 acute lung injury patients. The effect of PEEP on pulmonary circulation at four different levels (0,4,8, and 12cm$H_2O$) was analyzed. Pcap was estimated visually at bed side with Swan Ganz catheters. The pulmonary vasculature was analyzed by calculating the pressure difference at the arterial and venous parts of the circulation. Results: As PEEP increased from 0 to 12 cm$H_2O$, the mean pulmonary arterial pressure (PAP) and Pcap increased respectively from $22.7{\pm}7.4$ to $25.3{\pm}7.3$ mmHg and $15.3{\pm}3.3$ to $17.8{\pm}3.2$ mmHg (p<0.05). Similarly, PAOP increased from $9.8{\pm}2.1$ to $12.8{\pm}2.1$ mmHg and the central venous pressure increased from $6.1{\pm}1.6$ to $9.3{\pm}2.3$ mmHg(p<0.05). However, the pressure gradient at the arterial (PAP-Pcap) and venous (Pcap-Pcwp) parts of pulmonary circulation remained unchanged at all evaluated PEEP levels. Conclusion : Although Pcap increased gradually with increased the pressure gradient at the arterial and venous part of the pulmonary vasculature remained unchanged at all evaluated PEEP levels in acute lung injury patients.

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The Effect of Bee Venom Acupuncture(BVA) on acute Ankle Sprain : A Randomized Controlled Trial and double blinding - Pilot study (급성 족관절 염좌에 대한 봉약침 효과-무작위대조시험, 이중맹검)

  • Song, Ho-Seub
    • Journal of Pharmacopuncture
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    • v.8 no.2
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    • pp.11-16
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    • 2005
  • Objective : The aim of the study was to investigate the therapeutic effect of BVA in the treatment of patients with acute ankle sprain. Design : A prospective randomized double-blind study of BVA was conducted. Setting : The study was done in the Kyungwon University Seoul Hospital from August 1st, 2004 to June 15th, 2005. Patients : 30 patients diagnosed with acute ankle sprain, especially 2nd degree on the Ankle grade pain chart(AGPC) participated in the study, who were divided into two groups (A and B) randomly by a coordinator flipping a coin. Group A and B were relevant to control and BVA group respectively, of which a coordinator never informed any other participant involved. Eventually 13 of 17 in group A and 11 of 13 in Group B finished all the process of the clinical trial. Intervention : In both group A and B, The Procedure of acupuncture treatment was made similar by appearance that four acupoints such as 坵墟(GB40), 中封(LR4), 商丘(SP5), 解谿(ST41) of the injured side were selected and Normal saline aqua-acupuncture(control, as a placebo) or BVA was done and then acupuncture at 坵墟(GB40), 中封(LR4), 商丘(SP5), 解谿(ST41), 足三里(ST36), 陽陵泉(G34) of the affected side was given again. the needles were retained for 20 minutes under the infrared rays. The treatment was given daily for a week. Outcome Measures : Ankle-Hindfoot Scale (AHS) and Visual Analogue Scale(VAS) were followed by three treatments. Statistical Analysis : Analysis regarding variations in AHS and VAS is carried out by applying Mann-Whitney test and Wilcoxon signed rank test sign test with level of significance at 5%. Results : At the end of the treatment, there was significant statistical differences between the two groups in VAS and AHS as well, while at the 3rd day only a VAS showed statistical significance. In each group, both VAS and AHS showed statistical significance along with duration of treatment. Conclusions : BVA was thought to be effective alternatives for relieving symptoms of acute ankle sprain, although further study was needed on the large scale.

Biological Parameters for Evaluating the Toxic Potency of Petroleum Ether Extract of Wattakaka volubilis in Wistar Female Rats

  • Gopal, Velmani;Agrawal, Nitin;Mandal, Subhash C.
    • Journal of Pharmacopuncture
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    • v.17 no.3
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    • pp.7-15
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    • 2014
  • Objectives: The present study investigated the toxic properties of petroleum ether extract of Wattakaka (W.) volubilis in Wistar female rats. Methods: An in vitro brine shrimp lethality bioassay was studied in A. Salina nauplii, and the lethality concentrations were assessed for petroleum ether extract of W. volubilis. A water soluble portion of the test extract was used in different concentrations from $100-1000{\mu}g/mL$ of 1 mg/mL stock solution. A 24-hours incubation with a 1-mL aliquot in 50 mL of aerated sea water was considered to calculate the percentage rate of dead nauplii with test extract administration against a potassium-dichromate positive control. The acute and the sub-acute toxicities of petroleum ether extract of W. volubilis were evaluated orally by using gavage in female Wistar rats. Food and water intake, body weight, general behavioral changes and mortality of animals were noted. Toxicity or death was evaluated following the administration of petroleum ether extract for 28 consecutive days in the female rats. Serum biochemical parameters, such as alanine aminotransferase (ALT), alkaline phosphatase (ALP), bilirubin, total cholesterol, triglyceride, total protein, glucose, urea, creatinine, sodium, potassium and ${\alpha}$-amylase levels, were measured in the toxicity evaluations. Pathological changes in isolated organs, such as the liver, kidneys, and pancreas, were also examined using hematoxylin and eosin dye fixation after the end of the test extract's administration. Results: The results of the brine-shrimp assay indicate that the evaluated concentrations of petroleum ether extract of W. volubilis were found to be non-toxic. In the acute and the sub-acute toxicity evaluations, no significant differences were observed between the control animals and the animals treated with extract of W. volubilis. No abnormal histological changes were observed in any of the animal groups treated with petroleum ether extract of W. volubilis. Conclusion: These results suggest that petroleum ether extract of W. volubilis has a non-toxic effect in Wistar female rats.

Factors influencing death anxiety, hospices knowledge, and attitude towards end-of-life care among paramedic students (응급구조과 대학생의 죽음불안, 호스피스 지식과 임종돌봄 태도에 영향을 미치는 요인)

  • Kang, Kyoung-Ah;Cho, Hye-Young
    • The Korean Journal of Emergency Medical Services
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    • v.20 no.3
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    • pp.107-120
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    • 2016
  • Purpose: The purpose of this study was to investigate the factors influencing death anxiety, hospices knowledge, and attitude towards end-of-life care among paramedic students. Methods: A self-reported questionnaire was completed by 196 paramedic students in D university college in J city from November 2011 to November 2014. The study instruments included death anxiety, hospices knowledge, and attitude towards end-of-life care. Data were analyzed by t test, ANOVA, post hoc $Scheff{\acute{e}}$ test, Pearson's correlation test, and stepwise multiple regression analysis using SPSS v. 20.0. Results: According to a stepwise regression on the factors influencing attitudes towards end-of-life care, 80.4% of variance (F=161.360, p<.001) was explained by experience of death, hospices knowledge, disappearance of death anxiety, satisfaction with relationships (${\geq}2$) and student attitude toward end-of-life care. In addition, 44.1% of the variance (F=39.434, p<.001) was explained by experience of death, satisfaction with relationship(${\leq}4$), warning of others about death anxiety, and family attitude towards end-of-life care. Conclusion: The attitude towards end-of-life care was influenced by hospices knowledge and death anxiety in paramedic students. It is necessary to provide training in understanding attitudes towards death anxiety and end-of-life care. An effective educational program should be developed and implemented among paramedic students to improve their awareness of death and anxiety hospices knowledge.