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.

Proposed mechanism in the change of cellular composition in the outer medullary collecting duct during potassium homeostasis.

Park, E-Y,Kim, W-Y,Kim, Y-M,Lee, J-H,Han, K-H,Weiner, I D,Kim, J Gutenberg 2012 HISTOLOGY AND HISTOPATHOLOGY Vol.27 No.12

<P>Potassium depletion (K?-D) induces hypertrophy and hyperplasia of collecting duct cells, and potassium repletion (K?-R) induces regression of these changes. The purpose of this study was to examine the time courses of the changes in cellular composition, the origin of intercalated cells (ICs) and the mechanism responsible for these changes. SD rats received K?-depleted diets for 1, 7, or 14 days. After K?-D for 14 days some of the rats received normal diets for 1, 3, 5, or 7 days. In the inner stripe of the outer medulla, K?-D increased significantly the number and proportion of H?-ATPase-positive ICs, but decreased the proportion of H?-ATPase-negative principal cells (PCs). However, proliferation was limited to H?-ATPase-negative PCs. During K?-R, the cellular composition was recovered to control level. Apoptosis increased during K?-R and exclusively limited in H?-ATPase-negative PCs. Double immunolabeling with antibodies to PC and IC markers identified both cells negative or positive for all markers during both K?-D and K?-R. Electron microscopic observation showed that ultrastructure of AE1-positive some cells were similar to AE1-negative some cells during K?-R. LC3 protein expression increased significantly and autophagic vacuoles appeared particularly in PCs on days 14 of K?-D and in ICs on days 3 of K?-R. These results suggest that PCs and ICs may interconvert in response to changes in dietary K+ availability and that autophagic pathways may be involved in the interconversion.</P>

비육중인 HOLSTEIN 수소에 있어서 저질 조사료의 에너지 이용성에 관한 연구

한인규,김홍대,하종규,김완영,Yanglian, Feng 한국영양사료학회 1999 韓國營養飼料學會誌 Vol.23 No.5

본 연구는 저질 조사료의 에너지 가치 및 이용성을 평가하기 위해서 평균체중이 400㎏인 비육중인 Holstein 수소 4두를 공시하여 수행하였다. 공시동물은 각각 호흡대사실에서 4가지 사료를 4×4 Latin square 방법으로 공급받았다. 대조구는 농후사료(50%)와 Chinese wildrye hay(50%) 사료를 사용하였으며, 처리구는 저질 조사료구로서 무처리 볏짚(100%). 요소처리 볏짚(100%) 및 Chinese wildrye 건초(100%) 등 3가지 사료를 이용하였다. 처리구간의 에너지소화율에 있어서는 유의적 차이가 나타나지 알았지만, 대조구는 처리구에 비하여 에너지소화율이 유의적으로 높게 나타났다(P<0.05). Chinese wildrye 건초만을 에너지 섭취수준을 달리하여 급여한 결과, 에너지섭취가 증가할수록 에너지소화율은 감소하였다. 또한 같은 시험에서, 조사료 입자가 감소할수록 에너지소화율이 증가하는 경향을 보였다. 메탄과 뇨를 통한 에너지 손실에 있어서 처리구 및 대조구간에 차이는 없었지만, 사료중의 NDF가 증가할수록 메탄생성이 증가하였다. 요소처리 볏짚과 Chinese wildrye 건초 처리구간에 K_m과 K_f 모두 비슷하였으며, 대조구의 K_f가 가장 높게 나타났다. 단백질과 지방의 체내축적은 대조구, Chinese wildrye 건초구, 요소처리 볏짚구 및 무처리 볏짚구 순으로 높았다(P<0.05). 본 연구 결과는 화학처리 볏짚이 에너지소화율과 이용성에 면에서 무처리 볏짚보다 우수하게 나타났으며, 특히 값비싼 Chinese wildrye 건초를 에너지 이용성 면에서 값싼 화학처리 볏짚으로 대체할 수 있는 가능성을 보였다. Four steers weighing average of around 400㎏ were used in a 4 × 4 Latin square design to study energy values of low quality roughages. The energy digestibilities of rice straw, treated rice straw, and Chinese wildrye hay were not significantly different. However, the digestibility of control diet (concentrate + Chinese wildrye hay) was significantly higher (P<0.05) than those of low-quality roughages. The energy digestibility of rice straw was not improved due to the treatment of urea-Ca(OH)₂. The result showed N digestibility tended to be higher in the steer fed treated rice straw. When effects of particle sizes of low quality roughage, Chinese wildrye hay, on energy digestibility were determined, there were no significant differences in GE intakes among the treatments of four particle sizes of the hay. Results also showed that energy digestibility tended to slightly increase as the particle size reduced. Methane production in relation to DE was the highest in the treatment of untreated rice straw, and the lowest with control diet. However, there were no significant differences among four feeding treatments. Urine excretion showed similar trends with methane production. Total energy loss via methane and urine against DE were 12.26, 22.93, 16.35, and 14.88 % in control diet, untreated rice straw, treated rice straw, and Chinese wildrye hay, respectively. The efficiency of utilization of DE was not significantly different among the treatments, but untreated rice straw showed the lowest efficiency. The results also showed that K_m, among untreated rice straw, treated rice straw, and wildrye hay were similar. These data also showed that both the K_m, and K_f from treated rice straw and Chinese wildrye hay were remarkably similar. This similarity clearly showed that treated rice straw had no effect on the efficiency of ME utilization for either K_m and K_f in fattening steers. The K_f of control diet was the highest among the treatment. With regard to body deposition of protein and fat, the results showed the higher values in the order of control diet, Chinese wildrye hay, treated rice straw, and rice straw. Based on these observations, this study regarding energy utilization clearly shows that a portion of expensive forages in the diet could be replaced with low-quality roughages such as treated rice straw.

희토류 금속을 첨가한 적철광의 자기상 전이

한경훈,신경호,김정기,정재윤 漢陽大學校 自然科學硏究所 2000 自然科學論文集 Vol.19 No.-

다결정시료(Fe₂O₃)1-x(Eu₂O₃)x (x=0.04와 0.06)계의 자기상 전이를 연구하기 위해 상온에서의 X선 회절, 액체질소온도에서 상온에 이르는 온도구간에서의 Mossbauer 분광과 약 8K에서 300K의 온도구간에서의 자기능률 측정방법을 사용하였다. X선 회절은 본 연구의 다결정시료가 a-Fe₂O₃와 동일한 rhombohedral결정구조를 가짐을 보인다. X선 회절선의 결과를 이용하여 비선형최소자승법을 써서 각 시료의 격자상수값을 구하였다. Mossbauer 분광결과는 자기상 전이가 255K<T<265K 온도 영역에서 일어남을 보인다. 온도영역 T<255K에서의 초미세 자기장의 온도 의존성에 반강자성 spinwave이론이 잘 적용됨을 보인다. 온도에 따른 magnetization의 변화로 자기상전이 온도를 관찰하였으며, 이 결과는 Mossbauer 분광 결과와 잘 일치 하였다. 상온에서의 hysteresis 곡선은 Eu농도가 증가함에 따라서 보자력이 증가하지만 자화와 잔류자화는 감소했음을 알 수 있었다. A study of magnetic transition for the polycrystalline (Fe₂O₃)1-x(Eu₂O₃)x (x=0.04 and 0.06) has been performed by the methods of X-ray diffraction at room temperature, Mossbauer spectroscopy within the temperature range from liquid nitrogen to room temperature, and a measurement of magnetic moment within temperature range of 8K∼300K. X-ray diffraction shows that the samples are in the same rhombohedral crystal structure as that of a-Fe₂O₃. The lattice parameter of the samples has been determined from X-ray diffraction patterns using computer with a progam of nonlinear square-fit. The Mossbauer results tell us that the magnetic transition of the samples occurs in the temperature region of 255K<T<265K. The temperature dependence of magnetic hyperfine field of the samples is in good agreement with a spin-wave theory for a antiferromagnetic phase within the temperature range from liquid nitrogen to 255K. The magnetic phase transition was observed by a temperature dependence of magnetization and the result was in good agreement with that of Mossbauer. Magnetic hysteresis curves indicated that the values of coercivity increase but that of magnetization and remanence of the samples decrease as increasing the concentration of Eu.

Satisfaction with mammography in the National Cancer Screening Programme participants of age 40s in Korea

JEON, B.Y.,LEE, H‐,Y.,PARK, E‐,C.,CHOI, K.S.,JUN, J.K.,KIM, Y.,HAN, M.A.,YOON, N‐,H.,KIM, E.J.,JEON, S.M. Blackwell Publishing Ltd 2011 European journal of cancer care Vol.20 No.6

<P>JEON B.Y., LEE H‐Y., PARK E‐C., CHOI K.S., JUN J.K., KIM Y., HAN M.A., YOON N‐H., KIM E.J. & JEON S.M. (2011) <I>European Journal of Cancer Care</I><B>20</B>, 803–809</P><P><B>Satisfaction with mammography in the National Cancer Screening Programme participants of age 40s in Korea</B></P><P>The aim of this study was to evaluate satisfaction with the National Cancer Screening Programme of mammography in Korea and to examine the association between subscales of satisfaction and general satisfaction. We conducted a cross‐sectional telephone survey for women who had obtained a National Cancer Screening Programme mammographic screening at general hospitals between May and October 2008. The present study included 2005 women in their forties. We performed multivariate linear regression using dependent variable as general satisfaction and independent variables as subscales of satisfaction, such as pre‐screening information transfer, staff interpersonal skills, physical surroundings and results reporting. Participants were stratified according to the result of their mammogram as negative or positive. Mean score of satisfaction was above 2.5 of 4 for all subscales. Women who received positive results were less satisfied with all of subscale factors. Staff interpersonal skills were the most important factor that contributed to general satisfaction. Future efforts such as staff training programme of communication/attitude skills, ensuring privacy and explanation of possible discomfort of the screening would be needed.</P>

Comparison of 90‐day case‐fatality after ischemic stroke between two different stroke outcome registries using propensity score matching analysis

Yu, K‐,H.,Hong, K‐,S.,Lee, B‐,C.,Oh, M‐,S.,Cho, Y‐,J.,Koo, J‐,S.,Park, J‐,M.,Bae, H‐,J.,Han, M‐,K.,Ju, Y‐,S.,Kang, D‐,W.,Appelros, P. Blackwell Publishing Ltd 2011 Acta neurologica Scandinavica Vol.123 No.5

<P>Yu K‐H, Hong K‐S, Lee B‐C, Oh M‐S, Cho Y‐J, Koo J‐S, Park J‐M, Bae H‐J, Han M‐K, Ju Y‐S, Kang D‐W, Appelros P, Norrving B, Terent A. Comparison of 90‐day case‐fatality after ischemic stroke between two different stroke outcome registries using propensity score matching analysis. 
Acta Neurol Scand: 2011: 123: 325–331. 
© 2010 John Wiley & Sons A/S.</P><P><B>Background – </B> It has not been clarified whether the disparity in ischemic stroke outcome between populations is caused by ethnic and geographic differences or by variations in case mix. Propensity score matching (PSM) analysis can overcome some analytical problems but is rarely used in stroke outcome research. This study was to compare the ischemic stroke case‐fatality between two PSM cohorts of Sweden and Korea.</P><P><B>Methods – </B> Prognostic variables related to baseline characteristics and stroke care were included in our PSM model. Then, we selected 7675 Swedish and 1220 Korean patients with ischemic stroke from each stroke registers and performed one‐to‐one matching based on propensity scores of each patient.</P><P><B>Results – </B> After PSM, all measured variables were well balanced in 1163 matched subjects, and the 90‐day case‐fatality was identical 6.2% (HR 0.997, 95%CI 0.905–1.099) in Sweden and Korea.</P><P><B>Conclusions – </B> No difference is found in the 90‐day case‐fatality in propensity score‐matched Swedish and Korean patients with ischemic stroke.</P>

한우개량을 위한 유단백질의 유전적 다형현상에 관한 연구

한상기(S . K . Han),정의용(E . Y . Chung),양교석(K . S . Yang),신유철(Y . C . Shin) 한국축산학회 1991 한국축산학회지 Vol.33 No.2

Genetic polymorphisms of milk proteins, αs₁-casein (αs₁-CN) β-casein (β-CN), k-casein (k- CN) and β-lactoglobulin (β- LG), in milk samples from 175 Korean native cattle were analyzed by using starch gel elec-trophoresis. Their genotype and gene frequencies were estimated and their genetic relationships with other breeds were compared by using genetic distance and dendogram. The results obtained were summarized as fallows ; 1. Three genetic variants each were identified at αs₁-CN (BB, BC, and CC), k-CN (AA. AB and BB) and β-LG (AA, BB and BB) and nine genetic variants (A¹A¹, A²A², A¹A², A¹A⁴, A²A⁴, BA¹, BA², BA⁴ and BB) existed at β-CN. 2. Genotype distributions of the milk protein loci were as fallows: αs₁-CN BB 76% BC 21.1%, CC 2.9% β-CN A²A²40%, A¹A²38.3%, BA²11.4%, A¹A¹3.4%,, A²A⁴2.9%, BA¹1.7%, A¹A⁴1.1%, BA⁴0.6%, BB 0.6%, k-CN AB 52%, AA 37.1%, BB 10.9%, β-LG BB 76%, AB 23.4%, AA 0.6%. The distributions of genotypes in each milk protein locus were corresponded closely to expectations of Hardy-Weinberg equilibrium. 3. Gene frequencies of the milk protein loci were: αs₁-CN^B 0.866, αs₁-CN^C 0.134; β-CN^A2 0.660, β-CN^A1 0.235, β-CN^B 0.080, β-CN^A4 0.025: k-CN^A 0.631. k-CN^B 0.369; β-LG^A 0.877, β-LG^B 0.123. 4. From the analysis of` the genetic distance values and the dendogram drawn from the genetic distances matrix, the results indicate that there was a close relationship between Korean native cattle and Japanese native cattle, especially Japanese Brown. Consequently, it is supposed that Japanese native cattle originated from Korean native cattle.

다운증후군의 산전진단을 위한 다양한 선별검사의 기여율 비교 - 산전 및 신생아때 진단된 96 례 분석 -

한정열(J . Y . Han),김문영(Y. M . Kim),조준형(J . H . Cho),안현경(H . K . Ahn),류현미(H . M . Ryu),김진미(J . M . Kim),김영미(Y . M . Kim),박소연(S . Y . Park),한혜경(H . K . Han),이영호(Y . H . Lee),양재혁(J . H . Yang) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.10

Objective : The purpose of this study was comparison of the contribution rate for prenatal diagnosis of Down syndrome using various screening methods (Age: greater than or equal to 35 years old, Serum markers: Triple test, Ultrasonography: abnormal sonographic findings, nuchal translucency, nuchal fold thickness).Methods : Total 96 cases of Down syndrome, prenatally or postnatally diagnosed between Jan. 1990 and Sept. 1999, made up the study population. We got the contribution rate of various prenatal screening methods of down syndrome, and obtained the efficiency of various screening program applied for last 10 years. Results : The frequencies of Down syndrome confirmed in prenatal and postnatal were 68 (71%) and 28 (29%) in respectively. The mean age of mother of Down syndrome fetus was 33.0±5.7 years old. The frequency rate of Down syndrome was 0.4, 1.3, 0.7, 0.7, 1.6, 0.7, 1.2, 2.2, 2.0 and 2.3 a 1,000 deliveries from 1990 to 1999 (Y= 0.28+0.18 year, P=0.01). The percentage of Down syndrome diagnosed prenatally was 0 (0/2), 43 (3/7), 50 (2/4), 25 (1/4), 56 (5/9), 100 (5/5), 71 (5/7), 78 (14/18), 78 (14/18) and 89 (17/19) from 1990 to 1999 (Y= 12.9+8.9 year, P=0.000). The contribution rate of prenatal diagnosis for Down syndrome was 30.2±5.6% by age, 18.2±3.4% by triple test and 51.7±6.3% by ultrasonography, and was significantly difference among each screen methods (P=0.008). Conclusions : This study shows that our prenatal screening program is highly effective to detect Down syndrome and especially ultrasonographic findings (abnormal sono findings, Nuchal translucency, Nuchal fold thickness) may be more important than that of age or Triple test to detect the Down syndrome prenatally.

유우개량을 위한 유단백질의 유전적 다형에 관한 연구 Ⅰ. αS1 - Casein 및 K - Casein 의 유전적 변이체

한상기(Sang K . Han),이기만(Khy M . Lee),정의용(Eui Y . Chung),장경진(Kyung J . Jang) 한국축산학회 1984 한국축산학회지 Vol.26 No.3

Genetic variants of αs₁-casein (αs₁-Cn) and K-casein (k-Cn) in milk proteins from 138 individual Holstein cattle in Korea were investigated by means of strach-gel-urea electrophoresis and the appearance of phenotypes, gene frequencies and genetic similarities were compared with those of foreign Holstein and of her breeds. The results are summarized as follows: 1. The milk proteins in cattle were controlled by codominant autosomal allelic genes of 9αs₁-Cn^A and αs₁-Cn^B(2 types), and K-Cn^A and K-Cn^B (2 types). 2. The distribution of phenotypes in each milk protein loci was αs₁-Cn BB 124, BC 14; K-Cn AA 76 Ab 49, BB 13. The number of phenotypes coxesponded closely to expectation of Hardy-Weinberg equilibrium (αs₁-Cn:0.7 $gt;P$gt;0.5, k-Cn;0.7$gt;P$gt;0.5). 3. Gene frequencies for genetic variants of the milk protein loci were analyzed. By the predominant allele in αs₁-Cn was αs₁-Cn B with a frequency of 0.949, whereas αs₁-CnC was in low gene frequency (0.051). Among the two alleles for K-Cn, K-Cn A gene showed to occur in high frequency (0.728). However, the Kin B was in low gene frequency (0.272).

Particle distribution in melt-processed Y_1.5 Ba₂Cu₃O_x superconductors with BaCeO₃ addition

Youn, J.S.,No, K.,Kim, Y.H.,Mahmood, A.,Jun, B.H.,Han, Y.H.,Sung, T.H.,Kim, C.J. North-Holland 2009 Physica. C, Superconductivity Vol.469 No.15

To understand the effect of BaCeO<SUB>3</SUB> on a Y<SUB>2</SUB>BaCuO<SUB>5</SUB> (Y211) distribution, Y<SUB>1.5</SUB>Ba<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>x</SUB> (Y1.5) superconductors with/without 1wt.% BaCeO<SUB>3</SUB> additions were prepared by a top-seeded melt-textured growth (TSMG) process. Two different BaCeO<SUB>3</SUB> powders (as-synthesized (coarse powder) and an attrition-milled (fine powder)) were used and the size effect was compared with that obtained from a Y1.5 sample with no addition. A refinement of the Y211 particles was achieved for both the as-synthesized and attrition-milled BaCeO<SUB>3</SUB> additions. The distribution of the Y211 particles was most uniform in the Y1.5 sample prepared with the attrition-milled BaCeO<SUB>3</SUB> powder due to the reduced size of the Y211-free regions by the fine size BaCeO<SUB>3</SUB> addition. The highest J<SUB>c</SUB> was achieved in the Y1.5 sample prepared with the attrition-milled BaCeO<SUB>3</SUB> powder. The J<SUB>c</SUB> result agreed well with the microstructure variations by the addition of BaCeO<SUB>3</SUB> powders.