• 제목/요약/키워드: Chang-Ki(張機)

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Characteristics of Seed Germination and Promotion of Germination Rate in Pollia japonica Thunb. (나도생강의 종자 발아 특성과 발아율 향상)

  • Ro, Na-Young;Song, Eun-Young;Kim, Seong-Cheol;Jang, Ki-Chang;Moon, Doo-Young;Kang, Kyeung-Hee
    • Korean Journal of Plant Resources
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    • v.21 no.2
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    • pp.144-147
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    • 2008
  • This study was conducted to clarify the characteristics of seed germination and to promote the germination rate in Pollia japonica Thunb. that was pointed to protect by the Office of Forestry in 1997. It was better the germination rate and the growth of in the light than those of in the darkness. The seed germination of Pollia japonica showed the highest germination rate at $20^{\circ}C$ any other treated temperature. To increase the germination rate of Pollia japonica, it was conducted priming treatments and storage treatments at $4^{\circ}C$. Priming treatments using 1% NaOH, 1% KOH for 30min were effective compared to control, but soaking of 100mg/L GA3 for 24 hours, 1% NaOCl for 30min were not useful. It was higher in wet storage than in dry storage. Wet storage of seeds showed a germination rate with 95.3% in 90-day treatment, which improved 55.3% than dry storage in 90-day.

Study on Development of Horticultural Media Using Macroporous Calcium-Silicate Mineral (다공성규산칼슘계 화합물을 이용한 원예용 상토개발에 관한 연구)

  • Lee, Jong-Jin;Chang, Ki-Woon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.9 no.2
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    • pp.101-107
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    • 2001
  • The experiment was conducted to investigate the agricultural utility of macro-porous calcium-silicate rnineral(CellCaSi) as topsoil mixture, as well as to estimate as a soil conditioner. The bulk density of CellCaSi which is consisted of various particle sizes ranging from 1mm to 3.35mm was about $0.42g/cm^3$, and its maximum porosity was approximately 81.4%. We also investigate gerrnination rates for Cabbage and Lettuce to obtain the suitable mixing ratios of CellCaSi with topsoil. Among 4 different mixing ratios, the germination rates of ropsoil mixed with 10% of CellCaSi were 94.1% and 64.6% for Cabbage and Lettuce, respectively resulted in the mosr suitable for germination. The growth rates for Cabbage and Lettuce showed thar 10% and 20% of CellCaSi treatments signification influenced the fresh weight. To observe the adsorption capacity of CellCaSi, CellCaSi was treated with a chemical fertlizer(N:P:K=18:18:18). lncreasing the contents of N, P and K, the amounts of adsorption by CellCaSi for these element also increased. The most suitable types nutrient resources for growth condition of Cabbage, and Lettuce were Fer-1 and Fer-0.5.

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The Influence of the Hygroscopic Components in the Tobacco Leaves on the Equilibrium Moisture Contents (잎담배 성분(成分)이 평형수분(平衡水分)에 미치는 영향(影響))

  • Chang, Ki Woon;Kim, Byeoung Ku
    • Korean Journal of Agricultural Science
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    • v.16 no.1
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    • pp.118-128
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    • 1989
  • This experiment was conducted to study the relation between the equilibrium moisture contents and the hygroscopic components in the various tobacco matters such as NC-82, Br-21, R.T.S., and puffed stem. The order of the high equilibrium moisture contents was the puffed stem, R.T.S., NC-82, and Br-21. The H-1 grades of NC-82 and Br-21 contained high contents of total sugar had higher equilibrium moisture contents than others. The moisture contents in NC-82 and Br-21 were increased at higher temperature, $30^{\circ}C$ than $20^{\circ}C$. The grades with high amounts of water extracts and total sugar affected to increase the equilibrium moisture contents in NC-82 and Br-21. In conclusion, the equilibrium contents were related to the structure of tobacco matter, the grades, the temperature, and the amount of some chemical components such as water extracts and total sugar of the leaf tobacco.

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Reduction of the Odors during Pig Manure Composting Using of Pyroligneous Acid Liquor (목초액 처리가 돈분 퇴비화 과정중 악취저감에 미치는 영향)

  • Lee, Jong-Eun;Chang, Ki-Woon;Lee, Jong-Jin;Hwang, Joon-Young
    • Korean Journal of Agricultural Science
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    • v.32 no.2
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    • pp.233-241
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    • 2005
  • The objective of this study was to investigate the effect of odor removal such as $NH_3$, volatile organic acid (VOA) during the pig manure composting using of the Pyroligneous acid liquor (PAL). The odor removal efficiencies were evaluated throughout the dilution rates (${\times}0$, ${\times}100$, ${\times}300$) of PAL. The results of the study are as followings. $NH_3$ content in all treatments (volume 10L) was approximately 8 mg/kg in compost piles on the first day. In the case of control treatment, it was increased by 46 mg/kg within 10 days and was not detected after 25 days. In contrast, those levels in PA-100 and PA-300 treatments were similar values at 38 mg/kg within 6 days and decreased after 15 days. And GC. equipment was used to analyze the volatile organic acids (acetic acid, butyric acid, isobutyric acid, isovaleric aicd, 2,3-methylbutyric aicd, and propionic acid). The concentration of acetic acid and butyric acid were the higher than other VOAs during the initial composting day and sharply declined after 15 days. The VOAs in the control treatment were detected until 40 days, but PA-100 and PA-300 treatments were not measured after 15 days. The PA-100 in all treatments was the most effective treatment for $NH_3$ gas and VOAs reduction during composting. In addition, these studies for the odor reduction in compost manufacture process would have to research on more effective methods for the PAL utilization in agro-biological aspects.

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ANALYSIS ON THE OUTPATIENT ANESTHESIA AT DENTAL CLINIC FOR DISABLED IN SEOUL NATIONAL UNIVERSITY DENTAL HOSPITAL (서울대학교 치과병원 장애인진료실의 외래환자마취 실태 분석)

  • Park, Chang-Joo;Jung, Jun-Min;Kim, Hyun-Jeong;Jang, Ki-Taeg;Lee, Sang-Hun;Yum, Kwang-Won
    • Journal of the korean academy of Pediatric Dentistry
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    • v.31 no.1
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    • pp.19-25
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    • 2004
  • Dentally disabled person means one who have difficulty in cooperating voluntarily with a dentist for routine dental care. Seoul National University Dental Hospital (SNUDH) Dental Clinic for Disabled has worked for them under outpatient anesthesia concept. The aim of this study was to determine the anesthetic characteristics of the patients attending for dental treatment at SNUDH Dental Clinic for Disabled in order to establish better future treatment plans. The data were drawn from the patients who visited SNUDH Dental Clinic for Disabled from January 1999 to October 2002. Total 93 dental treatments for 83 patients were enrolled in this study. Most patients had mental retardation and the conservative treatments were carried out under general anesthesia. Thiopental and vecuronium were mostly used for induction agent and neuromuscular blocker, respectively. Enflurane, with oxygen and nitrous oxide, was mostly used to maintain the anesthesia. Mean total anesthetic time was $164.4{\pm}57.2$ minutes and mean duration at the post-anesthetic care unit was $106.2{\pm}50.5$ min. Serious postoperative complications were not observed. These results showed our successful anesthetic outcomes without any severe side effect or complication and the needs of more outpatient centers for dental care for disabled.

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Study of Play and Leisure Activity Preference on Children and Youths (아동 및 청소년의 활동 선호도 연구)

  • Chang, Ki-Yeon;Ryu, An-Na
    • The Journal of Korean Academy of Sensory Integration
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    • v.7 no.2
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    • pp.49-61
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    • 2009
  • Objective : This study is designed to investigate the children' preference in play and leisure activities in accordance with age, gender, demographic, school interest and scholastic performance. Method : A total of 204 children and youths aged in 8-17 years living in urban and rural area were recruited. The preference of activities was asked by using the questionnaire and the PAC Korean version. Results : There are differences in activity preferences according to age, gender, school interest. Girls showed higher preference in most PAC scales except for physical activities than boys. As the younger children are, the greater preference in recreation activities is shown. There were no significant differences of activity preference in demographic variable and scholar performance. The higher interest of school the children had, the greater preference in formal and social activities was shown. Conclusions : This study showed that there is play and leisure activity preference in children and youths according to age, gender, and school interest. The result of this study would be helpful for occupational therapists working with school-aged children and youths.

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A Comparative study on the inhibitory effect on contraction of isolated organs, anti-ulcer, secretion of gastric juice, secretion of gastrin in serum, transport ability of intestine, analgesic effect and sedative effect of the Bosimgunbitang(補心健脾湯) and ungjungamiijintang(正傳加味二陳湯) (보심건비탕(補心健脾湯)과 정전가미이진탕(正傳加味二陳湯)의 적출장기(摘出臟器), 항궤양(抗潰瘍), 위액(胃液)·gastrin 분비(分泌), 장관수송능(腸管輸送能) 및 진통(鎭痛).진경작용(鎭痙作用)에 대한 비교(比較) 연구(硏究))

  • Ryu, Bong-Ha;Park, Dong-Won;Ryu, Ki-Won;Yin, Chang-Jina;Kim, Jin-Seong
    • The Journal of Internal Korean Medicine
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    • v.21 no.1
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    • pp.87-99
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    • 2000
  • Objectives : This is the experimetal paper to evaluate and compare the effects of Bosimgunbitang(補心健脾湯) with those of Jungjungamiyijintang(正傳加味二陳湯) on contraction of isolated organs, anti-ulcer, secretion of gastric juice, secretion of gastrin in serum, transport ability of intestine, analgesic effect and sedative effect Methods : We used mice and rats administered with the extract of the above herbs. Results: Bosimgunbitang and jungjungamiijintang showed the inhibitory effect on the smooth muscle contraction of the isolated ileum induced by acethylcholine chloride and barium chloride in mice. transport ability of intestine. Bosimgunbitang and jungjungamiijintang showed the inhibitory effect on the contraction of the fundus-strip induced by acethylcholine chloride and barium chloride in rats. The preventive effect on pyloric ulcer, indomethacin induced ulcer and ethanol-HCl induced ulcer bf mice was significant. The inhibitory effect of Bosimgunbitang on gastric free acidity, total acidity in Shay rats was significant. The inhibitory effect of on gastrin secretion in serum was significant after only 1 hour when the Bosimgunbitang and jungjungamiijintang was administered. The promoting effect of the jungjungamiijintang on the transport ability of small intestine was significant in the high concentration. The promoting effect of the Bosimgunbitang and jungjungamiijintang on the transport ability of large intestine was significant. The analgesic and the sedative effect were recognized. It meaned that Bosimgunbitang and jungjungamiijintang effected on the C.N.S.. Conclusion : Bosimgunbitang and jungjungamiijintang have the inhibitory effect on the smooth muscle abnormal contraction of the isolated ileum and the anti-ulcer effect to prevent, secretion of gastric juice and gastrin in serum. And they also have to increase a transport ability of intestine, analgesic effect and sedative effect. Jungjungamiijintang especially is eminent for analgesic effect while Bosimgunbitang has excellent sedative effect.

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Agricultural Utilization of Paper Mill Sludge Manure Compost - II. Effects on the Growth of Carrot(Daucus carota L.) (제지(製紙) 스럿지 퇴비(堆肥)의 농업적(農業的) 이용연구 - II. 당근에 대(對)한 시용효과)

  • Chang, Ki-Woon;Kim, Sang-Deog;Choi, Woo-Young;Lee, Kyu-Seung
    • Korean Journal of Soil Science and Fertilizer
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    • v.25 no.2
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    • pp.155-159
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    • 1992
  • This study was carried out to know the effects of two kinds of peper mill sludge manure compost(SMC-1 and SMC-2) on the growth and chemical comments of carrot(Daucus carota L.) : SMC-1 contained 18% of swine manure and 8 % of sawdust on a fresh weight basis and SMC-2 contained swine manure without sawdust a third of the total weight of the manure and S-0(control) was treated with chemical fertilizer only, S-1 and S-2 was with SMC-1 and SMC-2 respectively, in addition to the chemical fertilizer. Carrot treated with S-1 and S-2 showed the increasing tendency of fresh weight per root and fresh yield of carrot per unit area than control(S-0), and the contents of nitrogen(N), phosporus(P), potassium(K) and calcium(Ca) in carrot grown on SMC treatments were higher than those on control(S-0), The S-2 treatment tended to increase values of the fresh weight of live leaves, root diameter, fresh weight per root and fresh yield of carrot per unit area than S-1 treatment. The contents in carrot were higher in the order of K>Ca, N. P>Mg, and the contents of aluminium, zinc, copper and chromium were below the level of toxicity for plant growth, and the contents of cadmium and lead were negligible. From the results obtained, it can be said that SMC application showed favorable effects on the growth of carrot when compared to control(S-0), and with the SMC treatments SMC-2 aplication was favorable.

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Agricultural Utilization of Paper Mill Sludge Manure Compost -I. Effects on the Growth of Kidney Bean (Phaseolus vulgaris L.) (제지(製紙)스럿지 퇴비(堆肥)의 농업적(農業的) 이용연구 -I. 강남콩에 대(對)한 시용효과)

  • Chang, Ki-Woon;Kim, Sang-Deog;Choi, Woo-Young;Lee, Kyu-Seung
    • Korean Journal of Soil Science and Fertilizer
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    • v.25 no.2
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    • pp.149-154
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    • 1992
  • A study was carried out to know the effects of two kinds of paper mill sludge manure compost(SMC) on the growth and chemical components of kidney bean(Phaseolus vulgaris) : Control(SMC-0) contained chemical fertilizer only, sludge manure compost-1(SMC-1) contained 18% of swine manure and 8% of sawdust of the total weight of the manure in addition to the chemical fertilizer, and sludge manure compost-2(SMC-2) contained swine manure without sawdust a third of the total by weight on a fresh weight basis, 1) Kidney bean treated with SMC-1 and SMC-2 showed the increasing tendency of values meristem height, stem diameter, pod number per plot and total grain yield when compared to control(SMC-0) treatment 2) Though there was not a significant difference between SMC-1 and SMC-2 treatments on the growth, SMC-1 tended to increase the value of meristem height, stem diameter, pod number per plot and total grain yield of kidney bean, 3) The contents of aluminium, iron and zinc in kidney bean were higher than other elements, though there was no significant difference between the treatments, And those of chromium, lead and cadmium were negligible. 4) From the results obtained, it can be said that SMC application has more favorable effects on the growth of the plant than control(SMC-0). The effects of SMC-1 application on the growth of kidney bean was more favorable than those of SMC-2.

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Influence of Fall-preventive Occupational Therapy Applied to Elderly in the Community upon Balance Ability (여성노인에게 적용한 낙상예방 작업치료가 균형 능력에 미치는 영향)

  • Chang, Ki-Yeon;Woo, Hee-Soon
    • The Journal of the Korea Contents Association
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    • v.10 no.3
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    • pp.232-240
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    • 2010
  • This study is to look into the effectiveness of fall-preventive occupational therapy of elderly by clarifying the influence of occupational therapy applied to female elderly in the community upon balance ability. A 6-week occupational therapy program including both training and exercise for prevention of fall down was applied by dividing into 13 persons of experimental group and 13 persons of control group for female elderly aged more than 65 years who were capable of independence gait and have not taken any drug to adversely affect balance. For balance ability assessment, the Berg balance scale and the Tetrax fall index were used. The Berg balance scale in experimental group was shown to be 48.38 to 50.69 through the 6-week program, indicating changes in significance level(p=.017). The Tetrax fall index in experimental group was shown to be 46.77 to 35.54 through the 6-week program(p=.000). Changes in significance level were not found for both the Berg balance scale and the Tetrax fall index in control group. As seen from the results of this study, it is found that 6-week application of the fall-preventive occupational therapy program including fall prevention training and exercise was effective for promotion of elderly's balance ability, and further studies just on the effect of fall prevention training are required to be made.