• Proceedings of the Optical Society of Korea Conference
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• 2000.08a
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• pp.58-59
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• 2000

레이저를 이용한 속도측정은 비접촉식 정밀측정이라는 장점 때문에 산업현장의 생산라인에서 온-라인 계측장비로 이용되고 있다. 특히, 철강업에서는 각종 설비의 제어를 위한 속도측정이나 연신률 측정 및 길이측정에 활용되고 있으며 제지분야나 고무생산 현장에서도 계측장비로 활용성이 점점 높아지고 있다. 본 연구는 레이저를 이용하여 비접촉식 속도계(Laser Doppler Velocimeter; LDV)를 제작하고 특성을 연구하였다. 기본 원리는 두 개의 레이저 빔을 측정대상의 한 지점에 입사시키고 이 지점에서 산란된 빛의 세기를 광검지기로 측정한 후 광검지기 출력의 주파수를 분석하여 측정대상의 속도를 산출하는 방법으로 두 개의 레이저 빔의 주파수가 같은 homodyne type과 주파수가 다른 heterodyne type으로 나누어지고 있다. Heterodyne type의 LDV 시스템은 속도값과 함께 측정대상의 이동방향을 알 수 있고, 측정신호가 고주파 대역에 있으므로 레이저의 불안정성이나 전원잡음 등에 의한 저주파 잡음을 용이하게 제거할 수 있는 장점을 가지고 있다. (중략)

• Journal of Korean Library and Information Science Society
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• v.37 no.1
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• pp.375-403
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• 2006

This study analyze the cited literatures of six chapters of Limwonsibyukji, which mainly deal with agriculture. As a result, it is confirmed that among citations twenty kinds of literature have orthographic errors in title and fifty three kinds of literature are abbreviated titles. Totals of cited literature which concerned with agriculture in Limwonsibyukji are 357 kinds and citation frequency is 5349 times. Core literatures which citation frequency over 100 times are Kunbangbo, Nongseo, Nongjeongjeonseo, Bonchogangmok, Jeminyosul, Jengbosanlimkyongje, Nanhoeomokji, Haeongpoji, Hwahansamjaedohae, Bakjumokdansa and six chapters of Limwonsibyukji concerning agriculture was mainly compiled through direct citation from raw materials.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.8
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• pp.3405-3416
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• 2012

The purpose of this study was to find out the effects of music rope-skipping on health fitness, blood lipids and growth-related factors in male middle school students. For this purpose, twenty subjects were participated in this study and the participants were 'After School Class' boys in B middle school located in Gimhae City. They divided into exercise group(n=10) and control group(n=10). Exercise group conducted 45minutes per a day, four times a week for 12 weeks. And the control group continued their normal life. The results were as follows; First, in exercise group, lean body mass, muscular strength, muscular endurance, cardiovascular endurance and flexibility were all significantly increased after program execution. But %body fat was significantly decreased. In control group, muscular strength, muscular endurance and cardiovascular endurance were significantly increased. There were significant differences in lean body mass, %body fat, muscular strength and flexibility between two groups after program execution. Second, in exercise group, HDL-C was significantly increased after program execution. In control group, TG was significantly decreased. But HDL-C was significantly increased. There were no significant differences in all blood lipids(TC, TG, HDL-C and LDL-C) between two groups after program execution. Third, in exercise group, GH and IGF-I were significantly increased after program execution. In control group, IGF-I was significantly decreased. There were significant differences in IGF-I between two groups after program execution. These results indicate that music rope-skipping is effective to improve lean body mass, muscular strength, flexibility, GH and IGF-I in normal middle school male students.

• Journal of the Korean Chemical Society
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• v.19 no.4
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• pp.258-268
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• 1975

The physical and chemical characteristics of solid organic wastes from paper and pulp industries, tanneries, and food processing industries were studied with regard to fertilizer value as well as humus sources as a rational method of waste utilization. The pulp and paper mill wastes containing low mineral nutrients but high lignin may be utilized for soil amendments through humus preparation. Chemical treatment sludges of tannery wast water contained appreciable fertilizer nutrients andiliming materials, but utilization as fertilizers or soil amendments depends on the pollution effect of high chromium content, which has not been well understood. Food processing wastes may be utilized as organic fertilizers or micronutrient sources for plant. Some wastes containing high water-soluble sugars or lower C/N ratio than 20 may be utilized as additives for rapid humus preparation.

• 대한근관절건강학회:학술대회논문집
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• 2002.11a
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• pp.238-246
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• 2002

최근 경제의 발전과 의학의 발달로 인하여 인간의 수명은 점차 연장됨에 따라, 노인인구도 급격히 증가하고 있다. 40세 이상 여성 인구도 8.998천명으로 전체 여성의 38%를 차지하며 이는 매년 증가할 것이다. 그리하여 전체 인구에 대한 폐경 여성의 점유율도 급격히 증가하고 있다. 폐경 이후 $5{\sim}10$년 동안 매년 $2{\sim}4%$씩 골농도가 감소하고 있기 때문에 폐경기 여성을 위협하는 주요 질환 중 하나가 골다공증이다. 하지만 골다공증은 뚜렷한 자각증상이 없어 골 기형 및 골절이 발생하기 전에는 조기발견이 어렵다. 골다공증은 모든 중년 여성의 건강문제이므로 지역사회에서 골절 발생 위험율을 줄일 수 있도록 골다공증 예방을 위한 건강관리가 필요하다. 본 연구의 목적은 지역사회에서 적용할 수 있는 골다공증 예방 프로그램을 개발하여 그 효과를 검정한 후 지역사회 중년 여성 건강증진 프로그램으로 활용코저 함에 있다. 골다공증 예방 프로그램은 운동과 교육으로 구성하였으며, 12주 동안 점핑 동작 위주의 에어로빅과 스텝퍼 운동과 근력강화운동(최대 심박수의 $70%{\sim}80%$, $70{\sim}80$분, 3회/주)을 병행하여 실시하였고, 교육은 운동과 칼슘 섭취의 중요성을 건강 신념 이론에 근거하여 자기 효능감을 증대시키는 교육을 하여 지속적인 운동 실천과 칼슘식이 섭취를 하도록 하였다. 대상자는 서울시 일개 보건소에서 골감소증으로 진단받은 폐경 여성으로 실험군 19명과 대조군 19명이었다. 골다공증 예방 프로그램의 효과는 골밀도, DPD ratio, osteocalcin, 일일 평균 칼슘섭취량, 일일 열량 소모량, 배근력, 최대 산소 섭취량, 제지방량과 건강신념 변수로 측정하였다. 수집된 자료는 PC SPSS 8.0 프로그램을 이용하여 대상자의 일반적 특성은 실수와 백분율로 실험군과 대조군의 동질성 검사는 t-test, $x^2-test$ 및 Fisher exact test를 이용하였고, 두 집단 간 결과변수들의 중재 전후의 차이는 t-test로 분석하였다. 연구 결과는 다음과 같다. 1) $L_{2-4}$ 골밀도는 실험군이 대조군에 비하여 유의하게 높았다. 2) DPD ratio와 osteocalcin은 두 집단간 유의한 차이가 없었다. 3) 배근력은 실험군에서 대조군보다 유의하게 증가하였으나, 제지방량과 최대 산소 섭취량은 유의한 차이가 없었다.

• Proceedings of the Korea Concrete Institute Conference
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• 1998.10c
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• pp.173-178
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• 1998

This study is described the experimental result of the development of artificial aggregate using paper sludge ash and the application of it in concrete. Artificial aggregates are prepared with crushed stone in the variety aspect. Therefore, Quality properties of artificial aggregate using paper sludge ash are fairly corresponded with it of crushed stone. For the application of artificial aggregate using paper sludge ash in concrete, Coarse aggregates are replaced with artificial aggregate using paper sludge ash in the constant of volume(0%, 30%, 70%, 100%). It is conclued from the test results that the artificial aggregate using paper sludge ash could be used replacement of coarse aggregate in concrete. Continuous study should be planned for improvement of it's quality.

• Journal of the Korean Applied Science and Technology
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• v.33 no.2
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• pp.239-246
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• 2016

In this study, recycling sludge water of Ready-mixed concrete, and was carried out to optimize the system for recycling of the $CO_2$. The most important process in the liquid phase using a carbonation reaction can be recovered ready-mixed concrete is a process for the $Ca^{2+}$ release. $Ca^{2+}$ concentration of the experiment relative to the pH being lowered by the acidic substance during elution was performed. $CO_2$ was trapped in the MEA solution using a generator flue gas. In ready-mixed concrete can be synthesized $CaCO_3$ up to 11kg/1ton. The resulting $CaCO_3$ analysis results show that it is possible to use paper industry.

• Korean Journal of Environmental Agriculture
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• v.12 no.3
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• pp.219-229
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• 1993

Effects of paper mill sludge-fertilizers were investigated on the growth performances of tree seedlings under field conditions. Two types of sludge-fertilizers applied were an organic sludge compost and a processed sludge-pellet fertilizer strengthened with several components of organic and inorganic nutrients. Three species of tree seedlings studied were ibota privet(Ligustrum obtusifolium) and yellow poplar(Liriodendron tulipifera) of 1-0 year seedlings and also eastern white pine(Pinus strobus) of 2-2 year seedlings. Nitrogen and phosphorus contents of plot soil treated with sludge compost+sludge-pellet fertilizer+sludge-pellet fertilizer plot were increased to 8 times and 2.6 times as those of control plot, respectively. The growth performances of root collar diameter and seedling height were repeatedly measured up to five times through the growing season and the results were analyzed statistically by analysis of variance of randomized block design and Duncan's multiple range test. The growth performances of dry weight were measured after last fifth measurements.

• Journal of the Korean Chemical Society
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• v.54 no.1
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• pp.115-119
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• 2010

Neutral red5 (BR 5) adsorption from aqueous solution was investigated. New solid adsorbent was prepared from paper sludge incinerated at $250^{\circ}C$ during 2 hours. Experiments were carried out, in batch system, to remove RB5 dye from the synthetic waste water. Maximum adsorption of 374.98 mg/g at pH 5, at room temperature and contact time of 80 min was obtained. The Langmuir and Freundlich adsorption models were applied to interpret the equilibrium isotherm. The Freundlich isotherm fits quite well with the experimental data (with highly regression coefficient $R^2$). The incinerated sludge solid samples untreated and treated with BR5 dye were characterized by FT-IR spectrophotometer.

• The Journal of the Korea Contents Association
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• v.5 no.2
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• pp.177-185
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• 2005

The purpose of this study was to evaluate the effect of combined exercise on body composition, health-related fitness and blood lipid. Subjects was ten middle-aged man. The combined exercise program consisted of performed for 60min in a bout, 4 times a week at the intensity of heart rate max$(50\sim75%)$ for 12 weeks. and the change of %fat, learn body mass, body mass index, back strength, sit-up, sit and reach total cholesterol, low density lipoprotein cholesterol, triglyceride and high density lipoprotein cholesterol have been measured before and post exercise 12 weeks. Paired t-test was performed for data analysis at the 0.05 level of significance.