• 대한간호학회지
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• 제34권5호
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• pp.673-684
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• 2004

Purpose: The purpose of the study was to meta-analyze the relationships of major concepts, which were made by synthesizing similar explanatory variables into more comprehensive concepts, to hope. Method: The relevant researches from Jan 1980 to Dec 2003, performed in adults or adult patients, were collected. Using the SAS program, meta-analysis were done with the input data of the number of subjects, the correlation coefficients provided from most of the studies or a few transformed correlation coefficients from F value. In order to get the analysis to be done in homogeneous status of the data regarding each relationship of each major concept to hope(p> 0.05), heterogeneous data were eliminated in repeating Q-test. Result: The major variable regarding relationship to self/transcendental being/life(spiritual wellbeing & self esteem) and social support(social support & family support) have very large positive effects on hope(D=l.72, D=l.27). The negative effect of the variable regarding captive state(uncertainty in illness, perceived unhealthiness status, & fatigue) and positive effect of coping(approach coping) on hope are in the level between moderate to large(D=-0.61, D=0.78). All the effects of the major concepts on hope were verified as significant statistically(p=.000). The Fail -Safe numbers showed the significant effects of the three major concepts except coping on hope were reliable. Conclusion: The results can be a guide to advance hope theory for nursing.

• Transactions on Electrical and Electronic Materials
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• 제9권3호
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• pp.91-95
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• 2008

In this study, in order to develop the composition ceramics for low loss multilayer piezoelectric actuator application, $Pb(Zn_{1/2}W_{1/2})O_3-Pb(Mn_{1/3}Nb_{2/3})O_3-Pb(Zr,Ti)O_3$ (abbreviated as PZW-PMN-PZT)ceramics according to the amount of $MnO_2$ addition were fabricated using two-stage calcinations method. And also, their dielectric and piezoelectric properties were investigated. At the 0.2 wt% $MnO_2$ added PZW-PMN-PZT ceramics sintered at $930^{\circ}C$, density, electromechanical coupling factor $k_p$, dielectric constant ${\varepsilon}_r$, piezoelectric $d_{33}$ constant and mechanical quality factor $Q_m$ showed the optimum value of $7.84g/cm^3$, 0.543, 1,392, 318.7 pC/N, 1,536, respectively for low loss multilayer ceramics actuator application.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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• pp.330-330
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• 2008

$Fe_2O_3$ added Pb$(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3-PbZrO_3 $ (PNN-PT-PZ) ceramics were produced in order to use them as a bimoph acturator for energy harvesting. Especially, the 0.25 wt% $Fe_2O_3$ added 0.4PNN-0.357PT-0.243PZ, having the composition of morphotropic phase boundary, showed good piezoelectric properties of $d_{33}$ of 810 pC/N, $k_p$ of 77% and $Q_m$ of 55 along with a high Curie temperature of $210^{\circ}C$. A bimorph actuator, composed of the two piezoelectric layers bonded together with a phosphorous bronze layer as a central metallic electrode, was successfully fabricated. The bimorph actuator, vibrated with a 1.3 mm amplitude at 68 Hz, produced high electric power of approximately 60 mW.

• 한국전기전자재료학회논문지
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• 제29권3호
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• pp.159-163
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• 2016

In this paper, in order to develop optimum composition ceramics with excellent piezoelectric properties, $(Na_{0.525}K_{0.443}Li_{0.037})(Nb_{0.823}Sb_{0.08}Ta_{0.037})O_3+0.3wt%Bi_2O_3+0.4wt%Fe_2O_3$ lead-free piezoelectric ceramics were synthesized by conventional soild-state method. The calcination temperature of columbite precursors were fabricated at temperature range from $950^{\circ}C$ to $1,150^{\circ}C$ and sintering aids with low melting point were added to densify these ceramics. Effect of calcination temperature on dielectric and piezoelectric properties of ceramics were investigated. the ceramics with B-site columbite precursors at temperature of $1,100^{\circ}C$ obtained the optimal values of $d_{33}=272$ [pC/N], $k_p=0.51$, $Q_m=102$, ${\varepsilon}_r=978$.

• 한국환경농학회지
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• 제33권4호
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• pp.372-380
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• 2014

본 연구는 시비처리가 상록 참나무류(가시나무, 붉가시나무 및 종가시나무) 유묘의 용기 내 생장에 미치는 영향을 구명하고자 실시되었으며, 시비수준은 무시비구와 함께 수용성 복합비료(N:P:K=19:19:19, v/v)를 1000, 2000, $3000mg{\cdot}L^{-1}$ 수준으로 조절하여 시비하였다. 시비처리는 이들 3 수종의 간장과 근원경 생장 그리고 건물생산량을 증가시켰으며, 시비 수준이 증가할수록 이들 생장도 증가하였다. H/D율과 T/R율도 3 수종 모두 시비수준이 증가할수록 커지는 경향을 보였다. 광합성률은 3 수종 모두 시비처리에 의해 또 시비 수준이 높아질수록 높아진 것으로 나타났다. 뿌리 형태 특성 분석에서, 전체 뿌리길이의 경우 시비농도가 증가할수록 긴 것으로 조사되었다. 투영단면적, 표면적 및 뿌리부피의 경우도 전체 뿌리길이의 특성과 유사한 경향으로 시비처리에 따른 증가가 관찰되었다. 이상과 같은 결과로 볼 때 뿌리발달이 뛰어나며 묘목품질지수가 높은 상록 참나무류의 1년생 용기묘생산에 적합한 시비수준은 $2000mg{\cdot}L^{-1}$ 정도인 것으로 판단된다.

• The Korean Journal of Ecology
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• 제24권2호
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• pp.101-109
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• 2001

We created an environmental forest on the basis of ecological design around the incineration plant of Jindo Engineering and Construction Co., Ltd., which is located in Jeongwang-dong, Siheung-si, Kyunggi-do. To get ecological information of this site, physico-chemical properties of soil on salt marsh, which is located close to the syudy site and of forest soil transported from other sites for ecological restoration were analyzed. Texture of salt marsh and transported soils were loam and sandy loam, respectively. pH, organic matter, T-N, available P, and exchangeable K and Na contents of salt marsh and transported forest soils were 6.7 and 5.4, 4.1 and 0.4%, 1.0 and 0.3mg/g, 46.7 and 6.8ppm, 521 and 207ppm, and 3.8 and 0.5mg/g, respectively. Introduced plants were selected among the dominant species of forests and the species composing the potential natural vegetation around the present study site. Those plants were selected again by considering the tolerances to air pollution and to salt, and their availability. Selected trees were Pinus thunbergii, Sophora japonica, Celtis sinensis, Quercus aliena, Q. serrata, Q. dentata, and Q. acutissima. Selected sub-trees were Albizzia julibrissin, Koelreuteria poniculata, and Styrax japonica and shrubs were Rhododendron yedoense var. poukhanense, R. mucronulatum, Callicarpa japonica, Euonymus alatus, E. japonica, and R. schlippenbachii. On the other hand, introduction of herbs was not considered except for Liriope platyphylla, which was ornamentally planted in one site. Planting bed of mound type was adopted to provide the fine drainage system. Mound was designed to furnish litter, A, B, and C layers simuating the profile of forest soil. Slope of mound was mulched by rice straw of 2cm in thickness to prevent for sliding of litter and soil in cases of strong wind or heavy rain. Height of mound was designed to secure more than 1 m by combining A and B layers. Narrow zones, in which mound with stable slope degree cannot be prepared, was designed to equip the standard soil depth with the introduction of stone for supporting. On the other hand, plants with shallow root system were arranged in some zones, in which satisfactory soil depth cannot be ensured. Plants were arranged in the order of tree, sub-tree, and shrub from center to edge on the mound to make a mature forest of a dome shape in the future. Dispersion of plants was designed to be random pattern rather than clumped one. Problems on creation of the environmental forest by such ecological design were found to be management or inspection by non-specialized project operators and inspecting officers, and regulations for construction without ecological background. Alternative plans to solve such problems were suggested.

• 한국식품과학회지
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• 제26권3호
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• pp.300-304
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• 1994

고추장의 유통기간 중 품질변화를 예측하기 위하여 숙성 완료된 고추장을 $13^{\circ}C$, $27^{\circ}C$ and $37^{\circ}C$ 에 저장하면서 품질의 변화를 측정하였다. 수분, 조단백질, 캡사이신함량은 저장 중 거의 변화하지 않았으나, 아미노태질소, 표면색도, pH는 감소하는 경향을 나타내었으며 암모니아태질소, 산도는 증가하였다. 이러한 증감현상은 저장온도가 높을수록 더욱 뚜렷하여 저장 온도가 고추장의 품질변화에 밀접한 관련이 있음을 알 수 있었다. 총균수는 저장온도 및 기간의 증가에 따라 큰 변화는 보이지 않았으며, 진균류는 검출되지 않았다. 이화학적 품질 특성과 관능검사와의 상관관계를 구한 결과 아미노태질소의 변화가 가장 높은 상관관계를 보였다. 저장기간에 따른 아미노태 질소값의 변화율은 1차 반응식으로 해석되었음, 반응상수로부터 계산된 $Q_{10}$값은 2.98이었다. 또한, Arrhenius equation을 이용하여 활성화에너지를 구한 결과 15.84 Kcal/mole인 것으로 나타났다.

• 한국어류학회지
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• 제21권1호
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• pp.7-14
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• 2009

강도다리의 수온과 체중에 따른 대사 반응을 조사하기 위해 절식한 자어(습중량, $1.5{\pm}0.4g$, 540마리)와 대형어 ($37.4{\pm}2.3g$, 90마리)를 대상으로 여섯 가지 수온(4, 7, 10, 13, 16 그리고 $19^{\circ}C$)에 따라 유수식 형태의 호흡실을 이용하여 24시간 동안 5분 간격(3반복)으로 산소 소비율(oxygen consumption rate, OCR)을 측정하였다. 수온과 체중 그리고 두 인자의 상호작용 모두가 강도다리의 산소 소비율에 유의한 영향을 미쳤다(p<0.001). 수온 상승에 따라 강도다리 자어와 치어의 산소 소비율은 모두 유의적으로 증가하였다(p<0.001). 수온 4, 7, 10, 13, 16 그리고 $19^{\circ}C$에서의 시간당 평균 산소 소비율은 자어의 경우 각각 1386.0, 1601.7, 1741.0, 1799.2, 2239.1 그리고 $2520.3mg\;O_2\;kg\;fish^{-1}\;h^{-1}$이었고, 치어의 경우 각각 83.8, 111.4, 126.3, 147.1, 187.7 그리고 $221.3mg\;O_2\;kg\;fish^{-1}\;h^{-1}$이었다. 실험 수온 조건에서 체중 증가에 따라 산소 소비율은 유의하게 감소하였다(p<0.001). 강도다리의 산소 소비율에 미치는 수온(T)과 체중(W)의 상관관계는 OCR=1520.91+40.85T-49.22W ($r^2=0.95$, p<0.001)이었다. 대사 작용에 의한 에너지 손실은 수온 증가와 체중 감소에 따라 증가하였다(p<0.001). 수온 4, 7, 10, 13, 16 그리고 $19^{\circ}C$에서 일간 평균 에너지 손실은 자어의 경우 각각 907.9, 1046.5, 1141.6, 1177.0, 1467.3 그리고 $1650.1kJ\;kg\;fish^{-1}\;d^{-1}$이었고, 치어의 경우 각각 54.8, 73.0, 82.9, 96.2, 122.9 그리고 $144.6kJ\;kg\;fish^{-1}\;d^{-1}$이었다. $Q_{10}$ 값은 $4{\sim}7^{\circ}C$, $7{\sim}10^{\circ}C$, $10{\sim}13^{\circ}C$, $13{\sim}16^{\circ}C$ 그리고 $16{\sim}19^{\circ}C$ 구간에서 자어의 경우 각각 1.62, 1.32, 1.12, 2.07 그리고 1.48이었고, 치어의 경우 2.59, 1.52, 1.67, 2.25 그리고 1.73이었다.

• 성인간호학회지
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• 제13권1호
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• pp.123-135
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• 2001

The purpose of this study is to analyze the structural pattern of nurses' pain management with patients who experience pain. As a research method, the Q methodology, which is useful for an objective view of a highly abstract concept, was applied. The data collecting activity of this study was from August, 21st, 2000 to November, 24th 2000. The Q-population, the previous thesis and a literature review were done. Questions about pain management by the nurse on the patients, caregivers, nursing students, doctors, nurses, and others were asked in documentary work and in-depth interviews. In all, 223 units of the Q-population were formed, and the last 35 units of the Q-population were extracted. The data on the P-sample was collected from 41 nurses who worked in the medical and surgical units of a hospital that belonges to C university in Seoul. The research results were constituted in 3 types. Type I was the 'pattern of judging by objectivity'. The statement on which most of the people highly agreed for those patterns was shown by 'If patients said that they are suffering from pain, we sufficiently performed an assessment about the etiology, location, duration and degree'. For type I, the same pain was found in different locations according to the patients, so the etiology of the pain should be identified first place. Since ways of coping are different according to pain etiology, it was thought that it is important to assess sufficiently the pain etiology, location, duration, and degree. Therefore, when patients complain of pain, the pain etiology should be identified and assessed; according to the result, pain management should be performed systematically. Type II was the 'pattern of accepting by subjectivity'. The statement on which most of the people highly agreed for those patterns was shown as 'If patients said that they are suffering from pain, the medical treatment should be performed rapidly and speedily.' For type II, when the patient complains of pain, treatment should be performed quickly in order to prevent the condition getting worse, and it is thought that activity is a reasonable duty. Further, by trying to show empathy after pain is admitted and by understanding and coping rapidly with the pain of patients, an attitude which matched the altruistic morals of nurses is being shown. Type III was the 'pattern of worrying about', and the statement on which most of the people highly agreed for those patterns was shown is 'When there is a pain, to help patients to tolerate the pain to the highest degree.' In type III, the pain is a subjective expression, so there is a difference according to every individual. Therefore, actually if there is no measurement of pain, it could be exaggerated so nurses should help patients to tolerate it to the utmost. Even if there is a way to remove pain without an analgesic drug, nurses were reluctant to perform pain management as they possibly could. Through these research results, pain management of nurses was classified in 3 types, and structural characteristics in each type were discovered. Based upon the characteristics according to the type, an individualized pain management intervention strategy should be established and the follow up work performed.

• 한국토양비료학회지
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• 제48권5호
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• pp.413-420
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• 2015

Objective of this study was to investigate adsorption characteristics and kinetic models of $NH_4-N$ to biochar produced from rice hull in respective to mitigation of greenhouse gases. $NH_4-N$ concentration was analyzed by UV Spectrophotometer. For the experiment, the soil texture used in this study was sandy loam soil, and application rates of chemical fertilizer and pig compost were $420-200-370kgha^{-1}$ (N-P-K) and $5,500kgha^{-1}$ as recommended amount after soil test for corn cultivation. Biochar treatments were 0.2-5% to soil weight. Its adsorption characteristic was investigated with application of Langmuir isotherm, and pseudo-first order kinetic model and pseudo-second order kinetic model were used as kinetic models. Adsorption amount and removal rates of $NH_4-N$ were $39.3mg^{-1}$ and 28.0% in 0.2% biochar treatment, respectively. The sorption of $NH_4-N$ to biochar was fitted well by Langmiur model because it was observed that dimensionless constant ($R_L$) was 0.48. The maximum adsorption amount ($q_m$) and binding strength constant (b) were calculated as $4.1mgg^{-1}$ and $0.01Lmg^{-1}$ in Langmuir isotherm, respectively. The pseudo-second order kinetic model was more appropriate than pseudo-first order kinetic model for high correlation coefficient ($r^2$) of pseudo-second order kinetic model. Therefore, biochar produced from rice hull could reduce $N_2O$ by adsorbing $NH_4-N$ to biochar cooperated in sandy loam soil.