Indium 添加된 CdS/(p)Si 異種接合 太陽電池의 製造 및 特性에 관한 硏究

朴鏞寬,金正浩,李載亨,兪榮植 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.1

In this study, the CdS/(p)Si solar cell was fabricated by electron-beam evaporation method, and their properties were investigated. Also the resistivity and optical transmission of CdS thin film were measured. The relation between this results and solar cell characteristics was considered, and came to as follow conclusion. 1. CdS this film is the polycrystalline in direction of (002), and has the hexagonal structure. In proportion to increase of substrate and annealing temperature, the optical band gap, and therefore the photo-transmittance in the absorption edge increases, while conductivity above the critical conditions decreases. 2. In proportion to Indium concentration, the resistivity of CdS thin film is the lowest when Indium concentration is 2[wt%]. In the photo-transmittance for the whole visible light, when the concentration is 2 [wt%], Burstein- Moss shift is the largest. 3. I_SC, V_OC FF, η, display the maximum value when the annealing temperture is at 350[℃]. 4. The characterisitcs of solar cells, that is I_SC V_OC FF, η, fabricated by mixture with In, somewhat more increases than those which is not mixed with. 5. In the optimal conditions the I-V characterisitics of the fabricated CdS/(p)Si solar cells shows as follows. V_OC:450[mV], I_SC:11.5[mA/㎠'], FF:0.475, η:4.92[%]

보디빌딩 선수들의 시합 전·후 신체조성과 체력 및 혈관탄성도 변화와 영양섭취 실태연구

곽재준,박재성,하수민,백영호 釜山大學校 附設 體育科學硏究所 2013 體育科學硏究所 論文集 Vol.30 No.-

The purpose of this study were to investigate a study of body composition, physical fitness, change of vascular compliance and nutrient intake status a before and after bodybuilders match. In this study, participants were 6 bodybuilders. The analyzed data brought about the following results by using paired t-test with SPSS 20.0. The results of the research were as follows. In to body weight and BMI were significantly increased but sit and reach were significantly decreased after match. There was non significantly difference in vascular compliance. Calories, lipids, carbohydrates, fiber and ash had significantly increased after match than before match. Calcium, iron, sodium, potassium, vitamin A, retinol, vitamin B1, vitamin B6, niacin, vitamin C, vitamin E had significantly increased after match than before match. Therefore, Bodybuilders need correct regular diet habit and exercise prescription after match. 본 연구는 B광역시 남자 보디빌딩 선수 6명을 대상으로 신체조성, 체력, 혈관탄성도 및 영양소 섭취상태를 시합 전·후를 분석하는데 목적이 있다. 자료처리는 SPSS 20.0 프로그램을 이용하여 paired t-test를 실시하였고, 연구결과에서 다음과 같은 결론을 얻었다. 시합전에 비해 시합후에 체중과 BMI는 유의하게 증가하였고, 유연성은 유의하게 감소하였고, 혈관탄성도는 유의한 변화가 없었다. 그리고 열량, 지질, 당질, 식이섬유 및 회분은 시합 전 보다 시합 후 유의하게 증가하였다. 또한, 칼슘, 철분, 나트륨, 칼륨, 비타민 A, 레티놀, 비타민 B1, 비타민 B6, 나이아신, 비타민 C, 비타민 E는 시합 전 보다 시합 후 유의하게 증가하였다. 이상을 종합하여 볼 때, 시합 전보다 시합 후에 영양소의 섭취증가로 인해 체중이 증가하는 것을 알 수 있으며, 이상의 연구 결과에서 시합전, 후의 식습관, 맞춤형 운동처방 및 체계적인 컨디셔닝 관리가 요구된다.

경사진 트레드밀에서 후방보행운동을 통한 넙다리네갈래근 강화와 요통의 관계

박주완,김경,김형욱,김재우,배솔희,서정표,이정구,정하영 대구대학교 특수교육재활과학연구소 2010 再活科學硏究 Vol.28 No.1

목적: 본 연구에서는 경사진 트레드밀에서의 후방 보행 훈련을 통한 넙다리네갈래근의 강화가 요통 환자의 치료에 미치는 영향을 알아보고자 하였다. 대상: 만성 요통을 호소하는 16명의 환자를 대상으로 연구를 실시 하였다. 방법: 트레드밀을 10° 경사로 맞춰놓은 상태에서 대상자들은 하루 20분, 일주일에 3회의 빈도로 2주 동안 훈련을 하였다. 표면 근전도를 가지고 넓다리 곧은근, 안쪽 넓은근, 가쪽 넓은근, 척추 세움근의 %MVIC를 측정하였고, KODI와 VAS를 통해 대상자들의 통증정도를 측정하였다. 결과: 넓다리 곧은근은 훈련전에 비해 훈련을 하고 난 후 상대적으로 높은 근전도를 보였고, 통계적으로 유의하였다(p<.05). 안쪽 넓은근과 가쪽 넓은근 또한 높은 근전도율을 보였지만 통계적으로 유의하지는 않았다. 척추 세움근은 훈련전에 비해 훈련을 하고 난 후 높은 근전도율을 보여주었고, 통계적으로 유의하였다(p<.05). VAS와 KODI의 평균값은 명백하게 감소되었고, 통계적으로 유의하였다(p<.05). 결론: 이상의 결론을 종합하면, 후방보행을 통한 넙다리네갈래근의 강화는 요통의 감소에 효과적이라고 사료되며, 더불어 넙다리네갈래근으로 접근하여 요통을 경감하는 중재방법이 효과적인 치료 방법이 될 수 있다는 것을 의미한다. Purpose: This study was to investigate the influence of strengthening the Quadriceps femoris through backward walking treadmill training in the patients who have lower back pain. Subjects: Sixteen subjects with chronic lower back pain were included. Method: In the training, the treadmill was set to have a inclination of 10 degrees, and the subjects were trained for 20 minutes a day, 3 times a week, for 2 weeks. %MVIC(muscle power) of rectus femoris, vastus medialis oblique, vastus lateralis and erctor spinae were measured with surface EMG, and KODI and VAS were used to measure the subject's level of pain. Results: Quadriceps femoris showed relatively higher average electromyogram rates than that before training(p<.05). Vastus medialis oblique and vastus lateralis also showed higher average electromyogram rates, but no significant change in them was noted. Erector spinae showed higher average electromyogram rates than that before training(p<.05). The average points of VAS and KODI clearly decreased(p<.05). Conclusion: Strengthening Quadriceps femoris seems to be efficient for relieving lower back pain in this study.

수도관의 생물막 형성에 미치는 잔류염소와 파이프 재질의 영향

박세근,박재우,성권식,최성찬,김영관 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

This laboratory study examined the impact of free chlorine residual and pipe material on the formation of biofilm in drinking water distribution pipe surfaces. Result of heterotrophic plate counts(HPC) of the biofilm in the tap water- supplied reactor averaged 2.17×105CFU/cm2 on PVC and 2.43×105CFU/cm2 on STS 316, respectively. HPCs on the surface exposed to the tap water containing 0.2mg/L of free chlorinne residual averaged 4.24×104CFU/cm2 on PVC and 6.54×104CFU/cm2 on STS 316, respectively Average of HPC/Total direct counts in the tap water-supplied reactor ranged from 1.08%(PVC) to 1.26%(STS 316) and from 0.38%(PVC) to 0.65%(STS 316) in the reactor supplemented with disinfectant, resfectively. No correlation was observed between disinfectant addition and biofilm density. With regard to the biofilm formation, little difference existed between PVC and STS 316. Yellow and red pigmented bacteria were the dominant expressions in bulk fluid, whereas non-pigmented bacteria were found dominant in the biofilm. Pink/red pigmented bacteria were found to be facultative anaerobic, while yellow pigmented bacteria and non-pigmented bacteria were found to be obligate aerobic.

골부초와 자갈대에 의한 고랭지 감자재배지 토양보전 효과

박철수,정영상,주진호,이원정,양재의 한국환경농학회 2005 한국환경농학회지 Vol.24 No.1

강원도 고령지 지역의 밭은 경사지에 발달한 곳이 많아서 강우에 의한 유거수와 토양의 유실이 많이 일어나게 된다. 일부 지역에서는 석비레를 이용하여 농업을 하고 있어 강우침식을 쉽게 받을 수 있다. 이러한 농경지 밭에 쉽게 적용하여 토양유실을 저감시킬 수 있도록 하기 위해 농경지 인근에서 쉽게 구할 수 있는 잡초와 토양침식 후 표면에 남은 자갈을 이용하여 골에 일정 간격으로 두어 그 효과를 살펴보았다. 토양 유실량은 식양토이면서 13%의 경사를 가진 포장에서는 사경과 등고선 경작만으로도 토양 유실량을 현저히 줄일 수 있는 것으로 나타났고, 경사가 23%,인 석비레 사양토 포장에서는 토양 유실이 심하게 발생하는 것으로 나타났다. 부초와 자갈을 최소로 이용하는 골최소부초와 골자갈대를 시험구에 처리함으로써 처리하지 않은 구에 비해 횡계와 용산 포장에서 45% 이상의 토양 유실 저감 효과와 유거수 발생 또한 저감시킬 수 있는 것으로 나타났으나, 사양토인 석비레 성토 지역의 경우는 토양 유실량이 보전처리구에서 61 Mg/ha 이상이 발생하여 골최소부초와 골자갈대를 3 m 간격으로 처리 하여서는 그 효과를 허용 토양 유실량인 11 Mg/ha 이하로 낮출 수 없는 것으로 평가되어 단일한 방법으로는 토양보전에 부족할 것으로 평가되었다. To develop proper soil management practices for reducing soil erosion, experiments were carried out by using lysimeters in Pyeongchang highland, Korea. Lysimeters installed at Hoenggye had 13% slope, 15 m slope length and 3 m width. Lysimeters with 23% slope, 15 m slope length and 5 m width were also installed at Yongsan. Soil textures in Hoenggye and Yongsan lysimeter plots were silty clay loam and sandy loam, respectively. In the lysimeters potato was cultivated, and slant furrow culture and contour culture were applied. Up-down furrow and continuous fallow lysimeter was included in the experiments as a control plot. For the slant furrow and contour culture methods, minimum furrow mulching and gravel barrier were placed at each end of the furrows in the lysimeters from April to October in 2000 and 2001 to prevent soil and nutrient losses. In Heonggye, in two years experiments, average soil loss of 17 Mg/ha was found in the up-down and continuous fallow lysimeter and 2.6 Mg/ha from furrow minimum straw and slant furrow treatment, and 1.8 Mg/ha from slant furrow and gravel bag treatment. In the contour culture, the soil losses were further reduced. In Yongsan, soil loss in the slant furrow culture without any protection treatment was 167 Mg/ha, and the soil loss was reduce to 61 and 86 Mg/ha with minimum straw and gravel bag treatments, respectively. The soil loss could be reduced more than 45% by furrow minimum straw and gravel barrier. The furrow minimum straw or gravel bag barrier successfully reduced soil loss in clay loam soil in Heonggye, but still the treatments were not enough to reduce soil loss in saprolite piled sandy loam soil in Yongsan.

ZnO 박막을 TCO로 사용한 염료감응형 태양전지의 제작

박미주,공대영,황문식,마재평 호남대학교 정보통신연구소 2006 정보통신연구 Vol.16 No.-

Dye-Sensitized Solar Cell was fabricated at general lab. with common and chief matters: TiO_(2) powder as semiconductor, Eosin-Y as dye, I^(-)/I_(3)^(-) as liquidus electrolyte, and Ag as bottom-electrode. And ZnO thin film as TCO was sputtered on the glass substrate. As a result, open-circuit voltage was generated in these samples. It was found that this cell that is fabricated under common conditions is commercially available.

WORDPROCESSOR의 교육적 활용 방안

박영태,정재운 동아대학교 인문과학대학 인문과학연구소 1995 인문과학연구 Vol.- No.2

The purpose of this study is to make plans to activate use of word processor as an educational tool. Four possible ways of using the word processor as an educational tool are presented as follows: First, word processor can be used as a tool for accomplishing educational objectives. Second, word processor can be used as a tool for reorganizing and managing the subject matter. Third, word processor can be used as a media for presenting the subject matter. Especially, word processor with data viewer can be used in place of blackboard. Fourth, word processor can be used as a tool for testing.

KISTI-ACOMS를 기반으로 한 대한치과보존학회 온라인논문투고관리시스템 개발

박재원,강무영 大韓齒科保存學會 2003 Restorative Dentistry & Endodontics Vol.28 No.6

Societies are important sources of new information for users. However. most of these societies still rely on traditional. or rather ancient methods for gathering and servicing the information. Furthermore. most of the societies are trying to electrify processes such as managing members and paper submission as well as the process managing the information for service but are limited due to financial and technical reasons. Therefore. KISTI(Korea Institute of Science and Technology Information) has developed the 『KISTI ACOMS(KISTI Article COntribution Management System)』 as part of the national project for automating the process of processing academic information by societies. in order to convert journals published by academic societies in Korea into an electronic form and make them accessible on the Internet. This system has been developed in the year 2001 and has since been distributed to societies free of charge. The number of societies requesting the service has risen recently. which prompted us to take more recommendations of the societies that adopt this system into account in expanding and standardizing the area of service being provided by the system.

벼 乾沓直播栽培時 播種期가 乾物生産에 미치는 影響

朴栽成,朴成圭,李尙榮,洪性澤,池在浚,趙東三,孫錫龍 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

This experiment was carried out to obtain indispensable information to establish comprehensive cultural method of rice in direct seeding on dry paddy at Chungbuk Agricultural Research and Extension Services. Effect of seeding date on dry matter production, yield components and yield were studied. Seeding on May 5 ensured the highest maximum number of tillers, while transplanting on May 20 gave the highest rate of effective tillers. Number of effective tillers was greater in the order of Hwajinbyeo, Hwaseongbyeo, Daekwanbyeo. Lengths of upper three leaves were increased at later seeding, but leaf width was not affected by seeding date. Ratio of leaf blade weight was higher in earlier seeding during 30 days before heading but was higher in later seeding during 30 days after seeding, and was higher in the order of Hwajinbyeo, Hwaseongbyeo, Daekwanbyeo. CGR, RGR and NAR were not significantly different among seeding dates during 30 days before heading, but were lower in later seeding during 30 days after seeding. LAR was not affected by seeding date during 30 days before heading, but was higher at seeding on May 5 in heading date and during 30 days after heading. Dry weight of leaf blade, leaf sheath and culm, ear and total biomass during 30 days before heading and heading were highest in May 5 seeding. Daekwanbyeo and Hwaseongbyeo in May 5 seeding and Hwajinbyeo in April 20 seeding brought the highest yield with greater number of spikelets, higher ripening ratio and greater 1,000 grain weight, and harvest index and grain/straw ratio were Increased at earlier seeding. There were significantly positive correlations between number of panicles per m2 and LAI at 30 days before heading and heading, dry matter weight of leaf blade and total mass at heading. On the other hand, there were significantly negative correlations between seeding date and ripened grain ratio. 1,000 grain weight and yield, and between 1,000 grain weight and leaf length of 2nd, respectively.

고혈압과 당뇨병이 허혈성 뇌혈관질환의 위험인지로서의 Lipoprotein(a)에 미치는 영향

박정욱,박성경,이정욱,김영인,김용재,이광수,김범생 대한신경과학회 1996 대한신경과학회지 Vol.14 No.1