상엽수확고(桑葉收穫高) 측정(測定)에 관(關)한 연구(硏究) -각형질(各形質) 가중치(加重値)(Weight)에 의(依)한 수량(收量)의 측정(測定)-

한경수 ( K. S. Han ),장권열 ( K. Y Chang ),안정준 ( J. J. Ahn ) 한국잠사학회 1969 한국잠사곤충학회지 Vol.9 No.-

상엽의 수확고를 측정하기 위하여 상엽의 수량과 높음 상관관계가 있는 형질 중 상전에서 쉽게 측정할 수 있는 기조장(X1), 기조직경(X2), 엽수(X3), 엽면적(X4)의 4개 형질을 측정하여 이들 형질의 수량에 영향하는 가중치를 다중회분방정식에 의하여 산출하여 수량을 측정할 수 있도록 여러 가지 식을 유도하였다. 1. 기조장(X1)과 기조직경(X2)을 측정하여 수량을 측정하기 위하여는 개량서반에 있어서는 y1v1=-1.15760+0.068X1+165.756X2(g) 일지뢰에 있어서는 y1v2=-221.500+1.768X1+38.152X2(g) 노상에 있어서는 y1v2=-253.826-0.116X1+289.507X(g) 수원상 4호에 있어서는 y1v4=-157.559+1.063X1+106.088X2(g)의 식에 의해서 기조장(X1)과 기조직경(X2)의 측정치를 대입하면 수량을 견적할 수 있다. 2. 기조장(X1), 기조직경(X2), 엽수(X3)의 3개 형질을 측정하여 수량을 견적하는 데는 각품종별로 각각 y2v1=-118.478-0.665X1+184.445X2+2.346X3 y2v2=217.432+2.062X3+35.668X2-1.058X3 y2v3=-206.249-0.739X1+268.08X2+2.770X3 y2v4=-153.383+0.009X1+2.024X2+0.171X3의 식에 의하여 수량을 견적할 수 있다. 3. 기조장(X1), 기조직경(X2), 엽수(X3), 엽면적(X4)의 4개 형질을 측정하고 수량을 견적하기 위하여는 각품종별로 각각 y11v1=82.567-1.283X1+15.501X2+0.640X3+3.511X4 y11v2=136.411+0.311X1+1.921X2-0.217X3+0.214X4 y11v3=150.2Z7-0.139X1+11.788X2+0.143X3+0.381X4 y11v4=160.850+0.323X1+66.076X2-0.794X3+2.614X4 등의 식에 의하여 수량을 견적할 수 있다. Various formulae for estimation of leaf production in mulberry trees were investigated and obtained. Four varieties of mulberry trees were used as the materials, and four characters, namely branch length (X, 1), branch diameter (X, 2), leaf number per branch (X, 3), and leaf area per branch (X, 4), were studies. The formulae to eatimate the leaf yield of mulberry trees are as follows: 1. Y1v1=-115.760+0.068X1+165.756X2 Y1v2=-221.500+1.768X1+38.152X2 Y1v8=-253.826-0.116X1+289.507X2 Y1v4=-157.559+1.063X1+106.088X2 where Y1v1, Y1v2, Y1v3, Y1v4, are showed the estimated yield of the each variety, namely Gaeryang souban, Ilchirye, Nosang, and Suwon Sang No. 4, respectively. X2 and X2 denote the measured values of branch length and branch diameter, respectively. 2. Y2v1=-118.478-0.665X1+184.445X2+2.346X3 Y2v2=-217.432+2.062X1+35.668X2-1.058X3 Y2v3=-206.249-0.739X1+268.08X2+2.770X3 Y2v4=-153.383+0.009X1+2.024X2+0.171X3 where Y2v1, Y2v2, Y2v3, Y7v4, are the estimated yield of the each variety, namely Gaeryang. Souban, Ilchirye, Nosang, and Suwon Sang No. 4, respectively. X1, X2, X3, denote the measured values of each character, branch length, branch diameter and leaf number per branch, respectively. 3. Y11v1=82.567-1.283X1+15.501X2+0.640X3+3.511X4 Y11v2=136.411+0.311X1+1.921X2-0.217X3+0.214X4 Y113v=150.227-0.139X1+11.788X2+0.143X3+0.381X4 Y11v4=-160.850+0.323X1+66.076X2-0.794X3+2.614X4 where Y11v1, Y11v2, Y11v3, Y11v4, are the estimated yield values of four varieties, and X1, X2, X3, X4 denote the measured values of four characters, namely branch length, branch diameter, leaf number per branch and leaf area per branch, respectively. The estimation method of mulberry leaf yield by measurement of some characters, branch length, branch diameter, leaf number per branch and leaf area per branch, could be the better method to determine the leaf yield of mulberry trees without destroying the leaves and without weighting the leaves of mulberry trees than the other methods.

수정진동자에 의한 Polypyrrole중합막의 Electrochromatic 현상

김정명,김종민,장상목,장정수,권영수 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1

This paper shows that the electrochemical mass transport in polypyrrole(Ppy) thin film deposited electrode, involves the rheological change and electrochromatics of the Ppy. These changes can be detected by measuring the resonant frequency, resonant resistance, and UV spectrum of a Ppy deposited quartz crystal. A Ppy deposited quartz crystal is used and measured the cyclic voltammograms in KClO_(4) electrolyte solution. The changes of the resonant frequency and resonant resistance showed that mass transport and viscoelastic changes occur in the Ppy film. The absorption change means that the electrochromatics change occurs also in the Ppy film

A new approach to modeling the effects of temperature fluctuations on monthly electricity demand

Chang, Yoosoon,Kim, Chang Sik,Miller, J. Isaac,Park, Joon Y.,Park, Sungkeun Elsevier 2016 ENERGY ECONOMICS Vol.60 No.-

<P><B>Abstract</B></P> <P>We propose a novel approach to measure and analyze the short-run effect of temperature on monthly sectoral electricity demand. This effect is specified as a function of the density of temperatures observed at a high frequency with a functional coefficient, in contrast to conventional methods using a function of monthly heating and cooling degree days. Our approach also allows non-climate variables to influence the short-run demand response to temperature changes. Our methodology is demonstrated using Korean electricity demand data for residential and commercial sectors. In the residential sector, we do not find evidence that the non-climate variables affect the demand response to temperature. In contrast, we show conclusive evidence that the non-climate variables influence the demand response in the commercial sector. In particular, commercial consumers are less responsive to cold temperatures when controlling for the electricity price relative to city gas. They are more responsive to the price when temperatures are cold. The estimated effect of the time trend suggests that seasonality of commercial demand has increased in the winter but decreased in the summer.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Estimate and identify temperature effects in a short-run electricity demand function. </LI> <LI> A new approach using temperature densities to estimate a cross-temperature response. </LI> <LI> Allow non-climate variables to influence the short-run demand response to temperature changes. </LI> <LI> Non-climate variables influence the demand response in the commercial sector of Korean electricity market. </LI> </UL> </P>

Ni-Fe기 초내열합금 Inconel 718의 변형특성 및 미세조직변화

장석태,박윤우 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.1

The characteristics of low cycle fatigue(LCF) and creep properties in the Ni-Fe based Inconel 718 superalloy were studied. Experimental results of LCF life could be related to the strain amplitude according to the Coffin-Manson model. However it was deviated from the model in the range of small strain amplitude from the specimen tested at 550℃. It is concluded that the deviation observed was attributed to the change of crack nucleation sites in matrix/twin(or slip) boundaries. It was shown from the electron microscopy of tested specimens that use of bright and drak field imaging techniques has a dominant effect to reveal difference in the amount of coherent strain field The phenomena of cyclic hardening as well as softening are discussed in the present article in terms of amplitude and test temperature.

Oral Health in Western Pacific Region, Current States, Challenges and Way Forward

Lee, Kyu-Hwan Shin, Seung-Chul Lee, Mi-Ra Chang, Yeon-Soo 대한임상예방치과학회 2011 International Journal of Clinical Preventive Denti Vol.7 No.1

Objective: The purpose of the study is to show the such level of the states for oral health as mainly in DMFT index rate in 12 years old, dft index rate in 5 years old and the oral cancer rate, according to gender distribution, in each country, related with such influencing factors as the dental environments, socio-economical situation and the systemic evironments conditions, according to classify the GNP level of each nation, in order to suggest the proper public oral health programs to contribute to promote the oral health level, for each country. Methods: Data analysis study was done with the information from the data bank of WHO internet or intranet, mainly, for 5 categories as the oral health status, systemic conditions related with the oral health, socio-economical factors, the dental systems, and the Public Oral Health activities, in 18 countries of WP RO region. Results: DMFT was low in high income countries and increased in middle upper or lower middle income, otherwise low level again in low income countries. Each country has performed the eligible programs for oral health promotion, with the consideration of the socio-economical factors for each country, in order to promote the oral health level and to prevent the oral diseases. Conclusion: Oral health can be promoted effectively by establishing the proper policies and programs by a responsible organization in each country as well as to be suggested with the appropriate guide lines from WHO. So WPRO should recommend or suggest to each country for effective public oral health program, by establishing the eligible and professional oral health department in governmental organization.

마우스 서라균(鼠癩菌) 감염에 대한 병인론적 연구

張寅奎,梁容泰,柳駿 연세대학교 의과대학 1972 연세의대논문집 Vol.5 No.1

Summer behavior of the Changjiang diluted water to the East/Japan Sea: A modeling study in 2003

Chang, P.H.,Isobe, A.,Kang, K.R.,Ryoo, S.B.,Kang, H.s.,Kim, Y.H. Pergamon Press ; Elsevier Science Ltd 2014 Continental shelf research Vol.81 No.-

The summer behavior of Changjiang diluted water (CDW) toward the East/Japan Sea (EJS) is investigated by using a numerical ocean model. The present study focuses on the summer 2003, in which significant low salinity water is observed in the southwestern EJS in spite of similar amount of Changjiang discharge to the normal year. This paper mainly compares two experimental results for the summer 2003 (Exp. Y2003) and the normal year (Exp. NML). The simulated CDW in summer 2003 reveals remarkable changes in the pathway toward the Tsushima/Korea (T/K) Strait. The northeastward CDW behavior to the Jeju Strait, a major pathway in the normal year, is significantly reduced, while an intense southeastward extension to the along-shelf current (i.e., Taiwan-Tsushima Warm Current System) is dominant, similar to the field observation in July 2003. It is suggested that the Ekman dynamics plays an active role in remarkable changes of the CDW behavior. Namely, the reduction of northeastward behavior is associated with the dominance of strong northerly wind anomaly where the fresher bulge develops. On the other hand, the strengthened southwesterly wind over the southern region off the river mouth reinforces the extension to the along-shelf current. In consequence, the CDW below 28.0psu joins the along-shelf current in the central East China Sea, and a passage of significant low salinity water is resulted at the T/K Strait in August 2003 due to the advection by along-shelf current. The additional experiment also exhibits that the strength of along-shelf current has an impact on the passage of CDW via the T/K Strait.

오리고기에 있어서 저장기간에 따른 보수성과 지방산 조성변화

박구부,김영환,장판형 경상대학교 축산진흥연구소 1986 畜産振興硏究所報 Vol.13 No.1

This experiment was carried out to investigate changes in WHC, lipid contents and fatty acid composition from duck muscles(9 months) during postmortem storage. Experimental animals were normally slaughted to produce sample from leg, breast and gizzard muscles. And the samples were stored for 0, 8, 48, 96 and 168hrs at 4℃. Fatty acid compositions were analysed by GLC. The results obtained were as follows: WHC of duck muscles at right after slaugutering 71.7-74.0%, respectively. WHC decreased rapidly at 8hrs, but increased only slightly at 48hrs and increased a little at 168hrs postmortem storage. As the storage time passed the means of total lipid contents were 1-3% duck muscles, respectively. Fatty acid was identified to ten from myristic acid to arachidonic acid in duck muscles by GLC. The highest composition of fatty acids was oleic acid(38-44%) in duck muscles. The next higher compositions of fatty acid were linoleic(26-27%) and palmitic acid(19-22%) in breast and leg muscles. Although saturated fatty acids increased as the storage time passed, unsaturated fatty acids relatively decreased in experimental animals, the composition of unsaturated fatty acids was higher than that of saturated fatty acids.

Histiocytosis 症候群의 臨床的 觀察

張永吉,洪鎔宇,李炳勳,崔奏榮,洪彰義 대한소아과학회 1971 小兒科 Vol.14 No.1

化粧品의 特殊成分에 關한 硏究(Ⅴ) : HPLC에 의한 치오글리콜산 및 그 염류를 주성분으로 하는 파마넨트웨이브용 제품의 분석법 Analysis of thioglycolic acid in permanent wave products by HPLC

장영경,최상숙,최보경,이흔파,이규식,김유선,정경림,문숙영,김종갑 국립보건연구원 1992 국립보건원보 Vol.29 No.2