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Energy cost of loads carried on the hands, head, or feet (짐나르기의 에너지 소요량)

  • Hwang, Dai-Yun;Nam, Kee-Yong
    • The Korean Journal of Physiology
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    • v.5 no.2
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    • pp.29-40
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    • 1971
  • Oxygen consumption, pulmonary ventilation, heart rate, and breathing frequency were measured on 8 men walking on a treadmill carrying load of 9 kg on hand, back, or head. Besides measurements were made on subjects carrying loads of 2.6 kg each on both feet. The speed of level walking was 4, 5, and 5.5km/hr and a fixed speed off km/hr with grades of 0, 3, 6, and 9%. Comparisons were made between free walking without load and walking with various types of loads. The following results were obtained. 1. In level or uphill walking the changes in oxygen consumption, pulmonary ventilation, breathing frequency and heart rate were smallest in back load walking, and largest in hand load walking. The method of back load was most efficient and hand load was the least efficient. The energy cost in head load walking was smaller than that of in hand load walking. It was assumed that foot load costed more energy than hand load. 2. In level walking the measured parameters increased abruptly at the speed of 5.5 km/hr. Oxygen consumption in a free walking at 4 km/hr was 11.4ml/kg b.wt., and 13.1 ml/kg b.wt. 5.5 km/hr, and in a hand load walking at 4 km/hr was 13.9, and 18.8 ml/kg b. wt. at 5.5 km/hr. 3. In uphill walking oxygen consumption and other parameters increased abruptly at the grade of 6%. Oxygen consumption at 4 km/hr and 0% grade was 11.4 ml/kg b. wt., 13.6 at 6% grade, and 16.21/kg b. wt. at 9% grade in a free walking. In back load walking oxygen consumption at 4km/hr and 0% grade was 12.3 ml/kg b.wt.,14.9 at 6% grade, and 18.7 ml/kg b.wt. In hand load walking the oxygen consumption was the greatest, namely, 13.9 at 0% grade, 17.9 at 6%, and 20.0 ml/kg b. wt. at 9% grade. 4. Both in level and uphill walking the changes in pulmonary ventilation and heart rate paralleled with oxygen consumption. 5. The changes in heart rate and breathing frequency in hand load were characteristic. Both in level and uphill walk breathing frequency increased to 30 per minute when a load was held on hand and showed a small increase as the exercise became severe. In the other method of load carrying the Peak value of breathing frequency was less than 30 Per minute. Heart rate showed 106 beats/minute even at a speed of 4 km/hr when a load was held on hand, whereas, heart rate was between, 53 and 100 beats/minute in the other types of load carriage. 6. Number of strides per minute in level walking increased as the speed increased. At the speed floater than 5 km/hr number of strides per minute of load carrying walk was greater than that of free walking. In uphill walk number of strides per minute decreased as the grade increased. Number of strides in hand load walk was greatest and back load walk showed the same number of strides as the free walk.

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A Study on Spatial Imagery(Yijing) Analysis of the Weeping Bamboo Lodge(Xiaoxiangguan) in #x300E;A Dream of Red Mansions』 (『홍루몽(紅樓夢)』에 나타난 소상관(瀟湘館)의 의경(意境) 분석)

  • Yun, Jia-Yan;Kim, Tae-Kyung
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.32 no.2
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    • pp.148-158
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    • 2014
  • This study aims to analyze the Spatial Imagery(Yijing) of the Weeping Bamboo Lodge(Xiaoxiangguan) which is from Chinese Qing dynasty novel "Dream of Red Mansions". The conclusions are as follows. First, the fantasy garden what is described in the novel "Dream of Red Mansions" can be recreated in reality. Second, through the analysis of the spatial imagery, the plants of the Weeping Bamboo Lodge contains a lot of meaning, and mainly through the plants to express meaning. Third, the main garden concept of the Weeping Bamboo Lodge is "Inspired by Nature", the representative space constitution principle is "the art of circuitous" and "view borrowing". Fourth, the concept of traditional garden in the novel "Dream of Red Mansions" and the landscape architecture theory book "Yuan Ye(Art of garden building)" is essentially in agreement. The generation process of garden spatial imagery was showed in this study, and on the basis of this, the garden spatial imagery of the Weeping Bamboo Lodge was analyzed. It is provided the useful information for the future research, and the novel "Dream of Red Mansions" as a important book was determined in the research of traditional garden.

Studies on Strength of Netting (2) The Knot Strength of Knotted Notting with Meshes Opened (그물감의 강도에 관한 연구(2) 주름을 준 매듭 그물감의 매듭의 강도)

  • KIM Dai An
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.9 no.1
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    • pp.13-18
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    • 1976
  • 1) The variation of the reef knot strength $T_r$ and the trawler knot strength $T_\varrho$ with the angle $\varphi$ between the adjacent bars are given by $$T_r=T_{ro}-k_{r\varphi}$$ and $$T_\varrho=T_{{\varrho}o}+k_{\varrho\varphi}$$ where $T_{ro}$ and $T_{{\varrho}o}$ are values of $T_r$ and $T_\varrho$ at $\varphi=0^{\circ}$ respectively, and $k_r$ and $k_\varrho$ constants decided by the fibre materials of netting twines ($\varphi\;is\;0^{\circ}$ when the knot is pulled lengthwise). 2) The variation of the reef knot strength $T_r'$ and the trawler knot strength $T_\varrho'$ with the angle $\varphi'$ between any one bar and the plane made by the other three bars may be expressed by $$T_r'=T_{ro}{'}\varrho^{-c\varphi'}$$ and $$T_\varrho'=T_{{\varrho}o}{'}\varrho^{-c\varphi'}$$ where $T_{ro}{'}$ and $T_{\varrho}o{'}$ are values of $T_r{'}$ and $T_\varrho{'}$ at $\varphi'=0^{\circ}\;{(\varphi=45^{\circ})}$ respectively, and o is the coefficient of attenuation. 3) Knot strength of knotted netting may be expressed by the expression derived in the preyious paper, disregarding its shape and the direction of tensile loads acting on it.

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Estimation of Food Miles and CO2 Emissions of Imported Food (수입 음식료품의 푸드 마일리지 및 이산화탄소 배출량 산정)

  • Ju, Ok-Jung;Lee, Jae-Bum;Seong, Mi-Ae;Kim, Su-Yeon;Ryu, Ji-Yeon;Kim, Dai-Gon;Hong, Yoo-Deog
    • Journal of Korean Society for Atmospheric Environment
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    • v.26 no.1
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    • pp.57-68
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    • 2010
  • Increase in greenhouse gas emissions during the last century has led to remarkable changes in our environment and climate system. Many policy measures have been developed to reduce greenhouse gas emissions across the world, many of which require our lifestyle changes from energy-intensive to energy-saving. One of the changes in our living patterns is to consider food miles. A food mile is the distance food travels from where it is produced to where it is consumed. Providing information of food miles will help people choose low mileage food, helping promote a "green consumption" action and lead to a low carbon society with emission reduction systems. In this study, 10 items are selected from 23 Harmonized commodity description and 2-digit coding system (HS) to estimate their food miles, and $CO_2$ emissions released in the transportation of imported food. For the estimation, four countries are chosen-Korea, Japan, United Kingdom (UK) and France, with Korea and Japan's 2001, 2003, and 2007 trade statistics and UK and France's 2003 and 2007 trade statistics used. As a result, Korea showed in 2007 the highest level of food miles and $CO_2$ emissions per capita among 4 countries. That suggests that Korea should make an effort to purchase local food to reduce food miles and use low-carbon vehicles for food transport, contributing to reducing greenhouse gas emissions.

Research on the Production and Acceptance of How Fandom Culture ; Focusing on Fan Fiction and Fan Illustration (팬덤 문화의 생산과 수용방식에 대한 연구 - 팬 픽션과 팬 일러스트레이션 중심으로)

  • LIm, Jae-Min;Kim, Dai-Hyun
    • Cartoon and Animation Studies
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    • s.42
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    • pp.315-335
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    • 2016
  • Culture is being created and consumed as several form by human development. Populace is forming through movement of mass of people to specific place which influenced by urbanization and industrialization. Since cultural products are created on base of economic principles cultural content makers are make culture products after lot of study and analyze. In early days popular culture was accepted only by the meaning of the text which has settled already via country or company which was holding the capital. But today we can apply culture products freely by the power of public opinion and media art's growth. Especially fandom is giving the opportunity to consume the image of cultural products actively and offering the good influence to make it by several ways of activities to the culture producers. In this study, consumption as a cultural group formed by the fandom in public will be transformed into participatory groups by the influence of cultural activities with fan art reproduction. These changes in the consumption of culture products will make it in positive way. Thereby culture creator who thinks fandom as a group of culture capital maker only use it now for the indicator for predicting success of culture products. Will find out in this study how culture consumption is accomplishing by fan fiction and fan illustration in the fandom culture and how reproduced fan art is affects to culture creators.

Characteristics of each Sasang Constitutional Type as assessed by the Temperament and Character Inventory (TCI) (기질 및 성격 검사(TCI)를 통한 사상체질 특성 연구)

  • Choi, Dai-Sung;Kim, Lak-Hyung;Sung, Won-Young;Han, Su-Jin;Shin, Dong-Yoon;Song, Jeong-Mo
    • Journal of Sasang Constitutional Medicine
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    • v.23 no.3
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    • pp.351-360
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    • 2011
  • 1. Objective: This study was designed to analyze the characteristics of each Sasang constitutional type using the Temperament and Character Inventory (TCI). 2. Methods: A total of 135 healthy subjects (age 19-30) participated in this study, consisting of 35 Soyang-type, 66 Taeeum-type, 30 Soeum-type, and 4 Taeyang-type subjects. A Sasang Constitutional Medicine specialist determined each subject's Sasang constitutional type based on the Two Step Questionnaire for Sasang Constitution Diagnosis (TS-QSCD) and comprehensive constitutional assessment. The subjects were also asked to complete the TCI. 3. Results: Among the four temperament dimensions, the Soyang- and Taeeum-type subjects showed significantly higher scores than the Soeum-type subjects in Novelty Seeking (NS). The Soeum-type subjects showed significantly higher scores than the Taeum- and Soyang-type subjects in Harm Avoidance (HA) (Soeum type > Taeeum type > Soyang type). The Soyang-type subjects showed significantly higher scores than the Soeum-type subjects in Reward Dependence (RD). The Soyang- and Taeeum-type subjects showed significantly higher scores than the Soeum-type subjects in Persistence (P). Among the three character dimensions, the Soyang-type subjects showed significantly higher score than the Taeeumand Soeum-type subjects in Self-Directedness (SD) (Soyang type > Taeeum type > Soeum type). The Soyang-type showed significantly higher scores than the Taeeum-type in Cooperativeness (C). 4. Conclusions: Differences in temperament and character were discovered across the Sasang constitutional types. The Sasang constitutional characteristics should be investigated in larger studies in the future. Similar studies could add to the growing knowledge of Sasang constitutional typology and contribute to a more accurate Sasang constitutional diagnosis.

Novel pH/Temperature Sensitive Hydrogels of Poly (ethylene glycol)-Poly (caprolactone) -Poly (${\beta}-amino\;ester$) (PAE-PCLA-PEGPCLA-PAE) Biodegradable Polyester Block Copolymer

  • Huynh Dai Phu;Lee Doo-Sung
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.263-263
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    • 2006
  • Poly (ethylene glycol)(PEG) - Poly (${\varepsilon}-caprolactone(CL)$) - Poly (D,L lactide(LA) (PCLA-PEG-PCLA) was synthesized by ring-opening polymerization to form temperature sensitive hydrogel triblock copolymer. The triblock copolymer was acrylated by acryloyl chloride. ${\beta}-amino$ ester was used as a pH sensitive moiety, in this study ${\beta}$- amino ester obtained from 1,4-butandiol diacrylate, and 4, 4' trimethylene dipiperidine, it have pKb around 6.6. pH/temperature sensitive penta-block copolymer (PAE-PCL-PEG-PCL-PAE) was synthesized by addition polymerization from acrylated triblock copolymer, 1,4-butandiol diacrylate, and 4, 4' trimethylene dipiperidine. Their physicochemical properties of triblock and penta-block copolymers were characterized by $^1H-NMR$ spectroscopy and gel permeation spectroscopy. Sol-gel phase transition behavior of PAE-PCL-PEG-PCL-PAE block copolymers were investigated by remains stable method. Aqueous media of the penta-block copolymer (at 20 wt%) changed from a sol phase at pH 6.4 and $10^{\circ}C$ to a gel phase at pH 7.4 and $37^{\circ}C$. The sol-gel transition properties of these block copolymers are influenced by the hydrophobic/hydrophilic balance of the copolymers, block length, hydrophobicity, stereo-regularity of the hydrophobic of the block copolymer, and the ionization of the pH function groups in the copolymer depended on the changing of environmental pH, respectively. The degradation and the stabilization at pH 7.4 and $37^{\circ}C$, and the stabilization at pH 6.4 and $10^{\circ}C,\;5^{\circ}C,\;0^{\circ}C$, of the gel were determined. The results of toxicity experiment show that the penta block copolymer can be used for injection drug delivery system. The sol?gel transition of this block copolymer also study by in vitro test ($200{\mu}l$ aqueous solution at 20wt% polymer was injected to mouse). Insulin loading and releasing by in vitro test was investigated, the results showed that insulin can loading easily into polymer matrix and release time is around 14-16days. The PAE-PCL-PEG-PCL-PAE can be used as biomaterial for drug, protein, gene loading and delivery.

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The Use of Polypropylene Mesh for Perineal Herniorrhaphy in the Dog (개에서 polypropylene mesh를 이용한 회음부 탈장 교정술 증례)

  • Kang, Eun-Hee;Chang, Hwa-Seok;Yang, Hee-Taek;Chung, Dai-Jung;Lee, Jae-Hoon;Yang, Wo-Jong;Kim, Tae-Hoon;Lee, Young-Su;Choi, Chi-Bong;Kim, Hwi-Yool
    • Journal of Veterinary Clinics
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    • v.23 no.4
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    • pp.461-464
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    • 2006
  • Perineal hernia occurs spontaneously in older male dogs after idiopathic weakening of the pelvic diaphragm A 14-year-old uncastrated male shih tzu dog with right-sided perineal swelling was referred to the Veterinary Medical Teaching Hospital of Konkuk University. He had sign of perineal swelling for three years. Plain radiography documented the extent of rectal and colonic dilation in the herinal sac. During surgery, external anal sphincter muscle, coccygeus muscle and levator am muscle were weakened due to the three years of herniation. Internal obturator muscle transposition method was not enough for large defect, so mesh was applied to reduce the hernial sac. Internal obturator muscle transposition combined with using of polypropylene mesh was successfully performed in this dog.

A Clinical Analysis of Patients Who Visited Emergency Department due to Chemical Incident Occurred at Industrial Place: A Retrospective Study (산업장 화학 사고로 응급실에 내원한 환자의 임상적 고찰: 일개병원의 후향적 연구)

  • Shin, Hee Jun;Oh, Se Kwang;Yoo, Byeong Dai;Jun, Duck Ho;Lee, Dong Ha;Woo, Kuck Hyeun;Yoon, Seong Yong;Choi, Sung Yong
    • Journal of The Korean Society of Clinical Toxicology
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    • v.13 no.2
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    • pp.78-86
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    • 2015
  • Purpose: The purpose of this study is to understand what kinds of chemical substances have been used annually and to investigate incidents that occurred due to chemical hazard release and to analyze statistically clinically chemical injury patients who visited one regional emergency medical center in Gumi city with documented references review. Methods: Annual chemical waste emission quantity (Kg/Year) (Cwep) was reproduced using national web site data governed by the Ministry of Environment and 5 years (from 1 .Jan. 2010 to 31. Dec. 2014) of medical records of chemical injury patients who visited our emergency department were reviewed retrospectively. By applying exclusion criteria, 446 patients of 460 patients were selected. Results: Dichloromethane, Toluene, Trichloroethylene, and Xylene were always included within Top 5 of Cweq. Six cases of chemical incidents were reported and in 3 of 6 cases involving Hydrogen fluoride were included during the study period. Male gender and twenties were the most prevalent group. Injury evoking chemicals were Hydrogen fluoride, unknown, complex chemicals (over 2 substances) in sequence. The most frequent site of wounds and injuries was the respiratory tract. Gas among status, intoxication among diagnosis, and discharge among disposition was most numerous in each group. Conclusion: There have been no uniform clinical protocols for chemical wounds and injuries due to various kinds of chemicophysical properties and ignorance of antidotes. Therefore conduct of a multicenter cohort study and experiments for ruling out chemicals according to chemicophysical priority as well as development of antidotes and clinical protocols for chemical injury patients is needed.

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Effects of Buckwheat, Potato and Rice on Glycemic Indices in Healthy Subjects

  • Koh, Eun-Sook T.;Ju, Jin-Soon;Choi, Moon-Gi;Yoon, Tae-Heon;Ahn, Young-Sook;Lim, Kyung-Ja;Kim, Soon-Ok;Kim, Jong-Dai
    • Korean Journal of Medicinal Crop Science
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    • v.10 no.4
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    • pp.253-258
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    • 2002
  • We compared the long-term metabolic effects of equal amounts of carbohydrate from potato, rice and buckwheat on glycemic indices and blood lipids in healthy subjects. Nine healthy volunteers-2 men and 7 women were studied. All subjects ate diets based on the same-7-day rotating menu differing only in that the major source of carbohydrate (about 50% of daily total calories) came either from buckwheat, rice or potato. The study was conducted with a triple crossover design over three 7 day periods. On the morning of the 8th day, fasting blood was drawn from each subject to determine serum glucose, insulin, triglycerides, total and HDL-cholesterol. Subjects were then asked to eat breakfast with their respective carbohydrate within a 20 min period. Blood samples were drawn at 30, 60, 120 and 180 min after the start of breakfast to determine glucose and insulin levels. At 30 min the glucose response to the rice meal(7.15mmol/L) and potato meal(6.71mmol/L) were greater than the response to the buckwheat meal(5.855mmol/L) (P < 0.05). The mean area under the glucose response to the curve following the rice meal was greater than that following the buckwheat meal(P < 0.05). The insulin responses to the potato and rice meals at 30 and 60 min were greater than those to the buckwheat meal (P < 0.05). The mean area under the serum insulin response curve after the rice meal was greater than of buckwheat. Blood lipids, uric acid and glycosylated hemoglobin were not affected by the three meals. The study shows that the buckwheat meal has more beneficial effects on glycemic indices than either the rice meal or potato meal in healthy subjects.