• Title/Summary/Keyword: B/C 분석

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The Study on Foundation Remains(Jeoksim) According to Types of Buildings of Gyeongbok Palace (경복궁 건물 유형에 따른 적심 연구)

  • Choi, In Hwa
    • Korean Journal of Heritage: History & Science
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    • v.42 no.3
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    • pp.154-175
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    • 2009
  • At the present state, studies on Gyeongbok palace are being done with history of architecture, records, and art. However, these studies have limits that they can only depend on existing buildings and record, which make it hard to research whole aspect of palaces. The foundation remains(Jeoksim) of Gyeongbok palace in the ground gives important clues that can fill the gaps of these studies. Thus I analysed jeoksim of Gyeongbok palace, assorted them by type, scale, material, and construction method. I examined jeoksim used by various types of building, and looked at changes by periods. Jeoksims are classified in 21 types. The foundation(jeoksim) varies according to types of buildings, building types and material of jeoksim also varies along the periods, and the fact proves certain peroid of time has its own jeoksim style in fashion. Jeoksims of Gyeongbok palace are divided into round-shape(I), rounded square-shape(II), rectangular-shape(III), square-shape(IV), and whole foundation of building(V) by the plane shape. They can be divided again into 21 types by construction techniques and materials used. During early Joseon(I), only three types of jeoksim; round-shape riprap jeoksim(1-1), II-1(rounded square-shape), II-2a(rounded square-shape riprap+roofingingtile brick), had been built, but as 19th century begun, all 21 types of jeoksim had built. In 19th century during Emperor Gojong, different types of jeoksim by periods were built, and especially different materials were used. During Gojong year 2(1865)~year 5(1868), in which Gyeongbok palace were rebuilt, 7 out of 10 types of jeoksim used piece of roofinging tile and brick mixture, in contrast, during Gojong year 10(1873)~13(1876), or 25(1888), 3 out of 5 types of jeoksim used sandy soil with mixture of plaster. Meanwhile palace buildings have different names by the class of owner and use such as Jeon, Dang, Hap, Gak, Jae, Heon, Nu, and Jeong, which were classified by types and buildings were built according to each level. With an analysis of jeoksim by its building types, I ascertained that jeoksim were built differently in accordance to building types(Jeon, Dang, Hap, Gak, Jae, Heon, Nu, and Jeong). By the limitation of present document, only some types of buildings such as Jeon, Dang, Gak, Bang were confirmed, as for Jeon and Gak, square-shape(IV) built with rectangular parallelepiped stone, and for Dang and Bang, rounded square-shape(IV) built with roofinginginging tile and riprap were commonly used. From the fact that other jeoksim with uncertain building names, were mostly built in early Joseon, we learn that round-shape riprap jeoksim(1-1) were commonly built. Therefore, the class of building was higher if the owner was in higher class, jeoksim is also considered to be built with the strongest and best material. And for Dang and Bang, rounded square-shape jeoksim were used, Dang has lots of II-2a (riprap + piece of roofing tile and brick rounded square-shape) type which mainly used riprap and piece of roofing tile and brick, but Bang has lots of II-2b (piece of roofing tile and brick+(riprap+piece of roofing tile and brick rounded square-shape), which paved piece of roofing tile and brick by 15~20cm above. These jeoksim by building types were confirmed to have changed its construction type by period. As for Jeon and Gak, they were built with round-shape riprap jeoksim(1-1) in early Joseon(14~15c), but in late Joseon(19c), various types of Jeoksim were built, especially square-shape(IV) were commonly built. For Dang, only changes in later Joseon were confirmed, jeoksim built in Gojong year 4(1867) mostly used mixture of riprap and piece of roofing tile and brick. In Gojong year 13(1876) or year 25(1888), unique type of plaster with sand and coal and soil layered jeoksim were built that are not found in any other building types. Through this study, I learned that various construction types of jeoksim and material were developed in later Joseon compare to early Joseon. This states that construction technique of building foundation of palace has upgraded. Above all, I learned jeoksim types are all different for various kinds of buildings. This tells us that when they constructed foundation of building, they used pre-calculated construction technique.

Evaluation of Potentially Available Soil Nitrogen by Using Buffer Phosphote Solution of pH7 (답토양(畓土壤)의 인산완형액(燐酸緩衡液)에 의(依)한 지력질소(地力窒素) 평가(評價)에 관(關)한 연구(硏究))

  • Ahn, Sang-Bae
    • Korean Journal of Soil Science and Fertilizer
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    • v.19 no.4
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    • pp.327-332
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    • 1986
  • Laboratory experiments were conducted to estimate extractable nitrogen by buffer phosphate solution of pH 7. A series of experiment soils were a) Sandy soil applied with compost, lime, and Wallastonite every years for 32 years. b) Sandy soils with and without waterlogging for 70 days before transplanting. c) Normal soils produced high and common yields. The results were summarized as follows: 1. Extractable organic nitrogen by pH 7 phosphate buffer solution was increased in order of NPK + compost > NPK > NPK + compost + lime + Wollast-onite > NPK + compost + lime > NPK + wollastonite > no fertilizer plot. 2. Extractable organic nitrogens at plots of NPK and NPK + compost were decreased as the growth stage processed regardless of tretments. 3. In case of normal soils having high and common yields the content of total N, organic matter and $NH_4-N$ were increased in high productive soil, while, only $NO_3-N$ content was increased in common productive soil. Especially, there was a highly positive correlation between extractable total nitrogen and $NH_4-N$ content submerged for 4 weeks under incubated condition. 4. Organic nitrogen content of soil was increased on the condition of non-waterlogging, however, nitrogen uptake by rice plant was increased in waterlogged paddy. 5. The content of extractable total nitrogen increased in the order of normal soil, sandy soil, unmatured soil, saline soil, and estimation of optimum nitrogen rates by extracted organic nitrogen was in order of saline soil, unmatured soil, sandy soil, normal soil.

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Effects of Chitosan on Reduction of Sodium Lactate in Sodium Nitrite-reduced Sausages (키토산이 저아질산나트륨 소시지의 유산나트륨 저감화에 미치는 영향)

  • Kang, Jong-Ok;Lee, Sang-Gil
    • Journal of Animal Science and Technology
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    • v.52 no.1
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    • pp.43-50
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    • 2010
  • The study was carried out to investigate the effects of chitosan-adding (0.5-1.5%) on nitrite-reduced (30 ppm) and sodium lactate-reduced (0-2%) sausages to avoid using excessively sodium lacte, which is substituted for sodium nitrite, The number of 24 rats for blood properties were used in this experiment and raised for 1-4 weeks. The color of sausages showed significant differences each treatment (p<0.05) and $a^*$ (redness) had the highest value in control (nitrite 100 ppm) and $b^*$ (yellowness) had the lowest value in T3 (nitrite 30 ppm + sodium lactate 0% + chitosan 1.5%). There were not significant differences in pH (5.53-5.66) and water holding capacity (66.06-69.75%) between control and two treatments (T1, nitrite 30 ppm + sodium lactate 2% + chitosan 0.5%; T2, nitrite 30 ppm +sodium lactate 1% + chitosan 1%), but T3 had significant differences in pH (5.06) and water holding capacity (62.44%), respectively. Springiness, cohesiveness, chewness and adhesiveness in texture analysis had not significant differences between control and three treatments, but hardness and gumminess had lower values in control than in three treatments. Appearance and color in sensory evaluation had higher values in control than in T1, but texture and flavor had lower values than in three treatments. Microbial counts had not significant differences in control, T2 and T3 for 1 week, for 3 weeks, it showed the lowest value in control than in three treatments. Anti-oxidant activity (TBARS) in sausages were more effective in control (p<0.05). The body weigh gain of rat were significantly increased in three treatments and also neutral fat, total cholesterol, LDL-cholesterol were significantly decreased in three treatments. However, T1 treatment had higher blood glucose content and significantly decreased in HDL-cholesterol, compared with control, but T2 and T3 treatments showed similar results in body weight gain and blood properties. So, through the addition of chitosan, it's possible to manufacture nitrite-reduced and sodium lactate-reduced sausage which is supplemented its function.

Analytical Studies on The Useful Characters Affecting The Lodging Resistance of Wheat and Barley Varieties (맥류의 도복에 관여하는 유용형질의 분석에 관한 연구)

  • Chang-Hwan Cho
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.11
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    • pp.105-117
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    • 1972
  • This experiment has been made to study the relationship between several characters affecting the field lodging and to establish some useful standards for selection of lodging resistant varieties and to classify the degree of lodging resistance in wheat and barley varieties of different sources. The experiment was carried at the Crop Experiment Station, Suwon in 1968. The results obtained are summarized as followings. a. The lodging index modified with bending moment of culm at breaking seemed to be the most useful character in checking the lodging resistance. Highly significant positive correlation (Barley; r=0.40-0.67, Wheat; r=0.46-0.68) was obtained between the lodging index and actual field lodging. b. Between two essential components expressing bending stiffness of the culm, the bending moment at breaking and secondary moment of inertia, a highly significant positive correlation (Barley; r=0.59, wheat; r=0.46-0.53) was observed. c. The bending stiffness of culm got stronger as the dry weight per unit culm, which express the quantity of accumulated dry matters in culm, increased. The correlation coefficient between those two factors was 0.35 to 0.40 in barley and 0.33 to 0.76 in wheat respectively. d. In both wheat and barley, highly significant negative correlation between lodging index and the other factors such as dry weight per unit culm (Barley; r=-0. 51 to -0.70, Wheat; r=-0.65 to -0.83) and bending moment of culm at breaking (Barley; r=-0.29 to -0.69, Wheat: r=-0.54 to -0.89) were observed. Particulary, weight of culm at breaking, secondary moment of inertia and section modulus showed significant negative correlation with lodging index in wheat. e. Outside diameter of culm expressed more intimate relationship with physical characteristics of culm than inside diameter and also showed highly significant correlation with weight of culm at breaking (Barley; r=0.42-0.56, Wheat; r=0.39-0.44) and with bending moment of culm at breaking (Barley; r=0.40-0.41, Wheat; r=0.38-0.49) and with secondary moment of inertia (Barley; r=0.56-0.57, Wheat; r=0.28-0.98) and with section modulus (Wheat; r=0.22-0.96). Between the thickness of culm and physical characteristics of culm also showed the positive correlation. f. There was positive correlation between the culm length and actual field lodging in several groups of variety among the varieties tested. But the culm length seemed to undesirable as a selection measure for the selection of the lodging resistant variety considering the stiffness of culm. g. In classification of lodging resistance for the varieties tested, many Korean barley varieties expressed excellent lodging resistant than wheat, but most of the wheat and barley varieties from Japan considered quite resistant to lodging. h. In selection of lodging resistant varieties, lodging index lower than 1.67 in barley and 1. 76 in wheat considered highly resistant to actual field lodging.

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Spatially-resolved Photoluminescence Studies on Intermixing Effect of InGaAs Quantum Dot Structures Formed by AlAs Wet Oxidation and Thermal Annealing (AlAs 습식산화와 열처리로 인한 InGaAs 양자점 레이저 구조의 Intermixing효과에 관한 공간 분해 광학적 특성)

  • Hwang J.S.;Kwon B.J.;Kwack H.S.;Choi J.W.;Choi Y.H.;Cho N.K.;Cheon H.S.;Cho W.C.;Song J.D.;Choi W.J.;Lee J.I.
    • Journal of the Korean Vacuum Society
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    • v.15 no.2
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    • pp.201-208
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    • 2006
  • Optical characteristics of InGaAs quantum dot (QD) laser structures with an Al native oxide (AlOx) layer as a current-blocking layer were studied by means of photoluminescence (PL), PL excitation, and spatially-resolved micro-PL techniques. The InGaAs QD samples were first grown by molecular-beam epitaxy (MBE), and then prepared by wet oxidation and thermal annealing techniques. For the InGaAs QD structures treated by the wet oxidation and thermal annealing processes, a broad PL emission due to the intermixing effect of the AlOx layer was observed at PL emission energy higher than that of the non-intermixed region. We observed a dominant InGaAs QD emission at about 1.1 eV in the non-oxide AlAs region, while InGaAs QD-related emissions at about 1.16 eV and $1.18{\sim}1.20eV$ were observed for the AlOx and the SiNx regions, respectively. We conclude that the intermixing effect of the InGaAs QD region under an AlOx layer is stronger than that of the InGaAs QD region under a non-oxided AlAs layer.

Nd, Sr and Noble Gas Isotopic Compositions of Alkali Basaltic Rocks and Mantle Xenoliths in the Baegryongdo (백령도에 분포하는 알칼리 현무암과 맨틀 포획암의 Nd-Sr과 영족기체 동위원소 조성)

  • ;Nagao Keisuke;;Sumino Hirochika
    • Economic and Environmental Geology
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    • v.35 no.6
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    • pp.523-532
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    • 2002
  • The rare earth elements (REE) and Nd, Sr and noble gas isotopic compositions eHer'He, 4$^{\circ}$Arp6Ar) for the Quaternary alkali basaltic rocks and mantle xenoliths in the basaltic rocks from the Baegryongdo were investigated to decipher the origin of alkali basaltic magma and xenolith beneath the Sino-Korean craton. Analytical results are summarized as follows; (1) The alkali volcanic rocks with voluminous xenoliths which are represented by the Mg-olivine and clinopyroxene dominant spinel-lherzolite in the Baegryongdo consist mainly of the basalt-mugearite and basaltic andesite. (2) The REE pattern of alkali basaltic rocks characterized by high HREE is similar to that of oceanic island basalt (OlB). Relatively concordant REE patterns of the basaltic rocks suggest that the alkali basaltic magma be formed by the identical source materials. (3) The Nd-Sr isotopic data of the alkali basaltic rocks suggest that the alkali basaltic magma be originated from the depleted mantle source with a little contamination of the continental crustal materials. (4) The $^3$He/ $^4$He ratios in olivines of xenoliths ranging from 5.0${\pm}$1.lRa to 6.7${\pm}$1.3Ra are lower than that of MORB (ca. 8.0Ra). It suggest that the xenolith be derived from the subcontinental lithospheric mantle. However, the high $^3$Her'He value of 16.8${\pm}$3.IRa at 1800$^{\circ}$C fraction (sample no OL-7) might be resulted from the post-eruptive cosmogenic $^3$He. The 4OAr/ 36 Ar ratios in olivines of mantle xenoliths are comparable to that of atmospheric argon, and are much lower than that of the MORB type mantle. These facts can lead to conclusion that the olivine of the xenolith in the Baegryongdo is affected by the post-eruptive atmospheric contamination during the slow degassing process.

A Study of the HI Antibody of the Koreans and Swine to Reovirus (한국인 및 가축(돼지)에 있어 Reovirus에 대한 HI 항체분석)

  • Lee, Yun-Tai;Lee, Chong-Hoon
    • The Journal of the Korean Society for Microbiology
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    • v.15 no.1
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    • pp.77-84
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    • 1980
  • The purpose of this paper is to study the incidence of humoral antibody to reovirus type 2 in the sera of the Koreans and animal(swine) at random. All the 614 of human beings and 877 of swine sera were collected during the period from June to December, 1979, from the healthy persons in the National Seoul Hospital and swine blood was collected from 25 different areas of June to 30th of September in 1977. The HI test was put with plastic plates according to the methods by Rosen(1960 a and 1974). The total 73.29% of the 614 cases in human and the 61.80% of the 877 in swine confirmed as a hemagglutination inhibition antibodies. In human the 76.47% of the 442 male cases and the 65.12% of the 172 female ones were confirmed to have humoral antibodies. The positive rate was widely shown in each age group. But the 31 to 50 old age groups showed a little higher than any other age group, which came to the 85.71% in 41-50 and the 78.72% in 31-40 old age groups. The monthly distribution of HI antibody was shown to reach the 93.22% of the 59 cases in June. This per cent was much higher than of any other distribution. Accordingly, the auther came to the conclusion that there is reovirus type 2 in all the parts of Korea and most of the Koreans have the higher rates of antibody. However, the positive rate of antibody was the 542 out of the 877 cases(61.8%) from the swine and antibodies was confirmed from the 25 different areas in Korea. The seasonal distribution of the antibody showed these high rates. In domestics animals; blood from the swine showed that distribution of HI antibodies to reoviras type 2. These antibody appears from the various areas of the province in Korea. For this reasons, reovirus was widely distributed in this country.

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Effects of Dietary Energy, Protein on Growth and Blood Composition in Cross-bred with Korean Native Chicks (사료 단백질 및 에너지 수준이 재래닭의 성장과 혈액의 성상에 미치는 영향)

  • Lee, H.S.;Kang, B.S.;Na, J.C.;Ryu, K.S.
    • Korean Journal of Poultry Science
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    • v.35 no.4
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    • pp.399-405
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    • 2009
  • Two experiments were conducted to establish the basic data of feeding system in cross-bred Korean native chicks. A total of seven hundred twenty chicks were replaced the 36 floor pen for the first five weeks with $3{\times}3$ factorial design in Experiment 1. Four hundred eighty of five weeks old chicks were raised from six to ten weeks of age with $3{\times}2$ factorial design in Experiment 2. Dietary ME and CP were formulated to contain 3,000, 3,050, 3,100 kcal/kg and 21, 22, 23%, respectively in Experiment 1 and 3,050, 3,100, 3,150 kcal/kg and 18, 19% in Experiment 2. Weight gain, feed intake were measured and calculated the feed conversion. Blood were collected and analyzed at the end of experiments. In Experiment 1, weight gain showed significantly higher in 3,050, 3,100 kcal/kg treatments than 3,000 kcal/kg treatment (P<0.05), but was not different in CP treatments. Feed intake was statistically high in 3,000 kcal/kg treatment compared with 3,050 and 3,100 kcal/kg ones (P<0.05), and more increased in 21% CP treatments compared to that of 22 and 23 CP treatment (P<0.05). Feed conversion of birds fed 3,050 and 3,100 kcal/kg diet showed much lower than 3,000 kcal/kg treatments (P<0.05). FCR was signicantly improved (P<0.05) in chicks fed diets containing 21 and 22% CP as compared to that fed 20% CP. Blood protein, glucose, and total cholesterol tended to increase in high energy and diet treatments. Blood HDL was increased as dietary energy increased, whereas LDL increased in low CP treatments. In Experiment 2, weight gain was not consistent between treatments, but more increased in 18% CP treatments compared to that of 19% CP treatment from six to ten weeks old in cross bred chicks (P<0.05). Feed intake was similar to the result of weight gain, but more increased in 19% CP treatment than 18% CP treatment (P<0.05). There were no statistically difference in FCR, but seemed to improve as dietary ME increased. Blood total protein and glucose increased as dietary CP was high, but triglyceride and HDL increased in high versus low ME (P<0.05). The results of these experiments suggested that optimum dietary ME and CP, were 3,050, 3,150kcal/kg and 22, 19% for the first five weeks and second one, respectively.

Development trend of the mushroom industry (버섯 산업의 발달 동향)

  • Yoo, Young Bok;Oh, Min Ji;Oh, Youn Lee;Shin, Pyung Gyun;Jang, Kab Yeul;Kong, Won Sik
    • Journal of Mushroom
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    • v.14 no.4
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    • pp.142-154
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    • 2016
  • Worldwide production of mushrooms has been increasing by 10-20% every year. Recently, Pleurotus eryngii and P. nebrodensis have become popular mushroom species for cultivation. In particular, China exceeded 8.7 million tons in 2002, which accounted for 71.5% of total world output. A similar trend was also observed in Korea. Two kinds of mushrooms-Gumji (金芝; Ganoderma) and Seoji-are described in the ancient book 'Samguksagi' (History of the three kingdoms; B.C 57~A.D 668; written by Bu Sik Kim in 1145) during the Korea-dynasty. Many kinds of mushrooms are also described in more than 17 ancient books during the Chosun-dynasty (1392~1910) in Korea. Approximately 200 commercial strains of 38 species of mushrooms were developed and distributed to cultivators. The somatic hybrid variety of oyster mushroom, 'Wonhyeong-neutari,' was developed by protoplast fusion, and distributed to growers in 1989. Further, the production of mushrooms as food was 199,829 metric tons, valued at 850 billion Korean Won (one trillion won if mushroom factory products are included) in 2015. In Korea, the major cultivated species are P. ostreatus, P. eryngii, Flammulina velutipes, Lentinula edodes, Agaricus bisporus, and Ganoderma lucidum, which account for 90% of the total production. Since mushroom export was initiated in 1960, the export and import of mushrooms have increased in Korea. Technology was developed for liquid spawn production, and automatic cultivation systems led to the reduction of production cost, resulting in the increase in mushroom export. However, some species were imported owing to high production costs for effective cultivation methods. In academia, RDA scientists have conducted mushroom genome projects since 1997. One of the main outcomes is the whole genome sequencing of Flammulina velutipes for molecular breeding. With regard to medicinal mushrooms, we have been conducting genome research on Cordyceps and its related species for developing functional foods. There are various kinds of beneficial substances in mushrooms; mushroom products, including pharmaceuticals, tonics, healthy beverages, functional biotransformants, and processed foods have also became available on the market. In addition, compost and feed can likewise be made from mushroom substrates after harvest.

Fortschritte in der Diagnostik von $Eisenstoffwechselst\ddot{o}rungen$ (철대사장애(鐵代謝障碍)의 진단(診斷)에 관(關)한 최근동향(最近勳向))

  • Keiderling, Walter
    • The Korean Journal of Nuclear Medicine
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    • v.4 no.1
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    • pp.1-9
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    • 1970
  • 철대사(鐵代謝)에 관(關)한 연구(硏究)는 과거(過去) 30년(年)동안 새로운 검사방법(檢査方法)의 도입(導入)으로 눈부신 발전(發展)을이룩하였다. 1937년(年) Heilmeyer 등(等)에 의(依)하여 Ortho-phenanthrolin방법(方法)의 개발(開發)로 저색소성빈혈(低色素性貧血)의 원인(原因)이 구명(究明)되고 또한 이에 대(對)한 치료(治療)의 원칙(原則)이 세워졌다. 그 후 심(甚)한 감염(感染)이나 악성종양(惡性腫瘍)을 가진 환자(患者)者에서 관찰(觀察)되는 빈혈(貧血)에 대(對)해서 하나의 가설(假說)을 세워 이를 설명(說明)하려 하였는데 이는 곧 혈장(血漿)으로부터 철분(鐵分)이 신속(迅速)히 소실(消失)되어 망내계(網內系)나 병변(病變)이 있는 국소부위(局所部位)에 주(主)로 모여 들어 특수(特殊)한 방어기능(防禦機能)을 발휘(發揮)한다는것으로 연자(演者)는 방사성동위원소(放射性同位元素)를 이용(利用)하여 이 가설(假說)을 증명(證明)하였으며 이 연구(硏究)에는 또한 이문호교수(李文鎬敎授)가 Freiburg대학(大學) 유학중(留學中) 참여(參與)한 바 있다. 철대사(鐵代謝)를 파악(把握)하기 위(爲)해서 $^{59}Fe$가 흔히 사용(使用)되는데 이러한 방사성동위원소(放射性同位元素)를 이용(利用)함으로서 다음 사항(事項)들을 관찰(觀察)할 수 있었다. 즉(卽) 1. 소화장기(消化臟器)로 부터의 철흡수(鐵吸收) 2. 혈장(血漿)에서의 철(鐵)의 소실속도(消失速度) 3. 혈장내(血漿內)에서의 철교체율(鐵交替率) 4. 적혈구(赤血球)의 철이용(鐵利用) 5. 생체내(生體內)의 철분포(鐵分布) 6. 철배설(鐵排泄)의 정량적(定量的) 분석(分析) 또한 근년(近年)에는 특수(特殊)한 기능(機能)을 발휘(發揮)할 수 있는 동위원소(同位元素)를 이용(利用)하여 철흡수(鐵吸收) 및 대사이외(代謝以外)에도 적혈구(赤血球)의 수명(壽命)과 혈액량등(血液量等)을 측정(測定)하게 되었다. 경구적(經口的)으로 투여(投與)된 철(鐵)은 대부분(大部分) 십이지장(十二指腸)의 상부(上部)에서 흡수(吸收)되고 무기철(無機鐵)이 보다 쉽게 흡수(吸收)되어 가(價)의 상태(狀態)로 된다. 혈장(血漿)에서는 transferrin에 의(依)해서 철(鐵)이 운반(運搬)된다. 혈장철(血漿鐵)의 대부분(大部分)은 혈색소분해(血色素分解)에서 유래(由來)되며 이는 다시 혈색소(血色素)의 재생(再生)에 이용(利用)되는데 혈장내(血漿內) 철교체율(鐵交替率)은 방사성철(放射性鐵)을 이용(利用)하여 측정(測定)할수 있다 이와같이 방사성철(放射性鐵)을 이용(利用)하여 철대사과정(鐵代謝過程)을 숙지(熟知)함으르서 임상(臨床)에 응용(應用)하기에 이르렀으며 다음과 같은 질환(疾患)의 진단(診斷)에 특(特)히 큰 도움을 준다. A. 진성철결핍증(眞性鐵缺乏症) : 혁색소철(血色素鐵) 및 저장철(貯藏鐵)을 포함(包含)한 생체내(生體內) 전철분(全鐵分)의 부족(不足)된 상태(狀態)로서 실혈(朱血)에 의(依)한 것이 대부분(大部分)이다. 이 경우 철흡수(鐵吸收)는 증가(增加), 혈장철치(血漿鐵値)는 저하(低下), 철소실속도(鐵消失速度)는 증가(增加)되며 혈장철(血漿鐵) 교체율(交替率)은 항진(亢進) 혹(或)은 정상(正常)이다. B. 심(甚)한 염증성(炎症性) 질환(疾患) : 이 경우에도 혈장철치(血漿鐵値)의 저하(低下), 소실속도(消失速度)의 증가(增加), 교체율(交替率)은 정상(正常)보다 4배(倍)까지 증가(增加)할 수 있다. 골수(骨髓)에서 보다는 간(肝), 비(脾)와 같은 망내계(網內系)에 방사성철(放射性鐵)이 집결(集結)되는 것으로 보아 혈색소철(血色素鐵)보다는 저장철(貯藏鐵)이 관여(關與)되는 것이다. C. 원발성(原發性) 혈색소증(血色素症)(Idiopathic hemochromatosis) : 혈장철(血漿鐵)의 증가(增加)가 현저(顯著)하며 transferrin 농도(濃度)는 정상(正常)보다 낮으나 거의 대부분(大部分)의 철분(鐵分)으로 포화(飽和)된다. 철흡수(鐵吸收)는 증가(增加)되고 철소실속도(鐵消失速度)는 감소(減少) 되어 있으나 교체율(交替率)은 항진(亢進)되어 있다. 혈장철(血漿鐵)은 간(肝), 비(脾) 등(等)의 기관(器管)으로 저장집결(貯藏集結)되어 철저류(鐵貯溜)가 증대(增大)되므로 철이용증((鐵利用症)은 저하(低下)된다. D. 선천성(先天性) 무(無)$\ulcorner$트란스헤 린$\lrcorner$증(症)(Congenital atransferrinemia) : 방사성철(放射性鐵)을 이용(利用)한 진단방법(診斷方法)으로 Freiburg에서 7세(歲)의 소녀(少女)에서 발견(發見)한 증례(症例)인데 간(肝), 비(脾), 심(心)의 비대(肥大)가 임상적(臨床的)으로 인지(認知)되었고 중증(重症)의 철결핍상(鐵缺乏狀)을 검출(檢出)할 수 있었다. 철흡수율(鐵吸收率)의 상승(上昇), 혈장철치(血裝鐵値)의 감소(減少), 혈장철소실속도(血漿鐵消失速度)의 증가(增加), 혈장철교체율(血漿鐵交替率)의 상승(上昇) 및 적혈구(赤血球)에서의 철분이용율(鐵分利用率)의 저하(低下)를 ferrokinetic study에서 알 수 있었고 간(肝)에서 고도(高度)의 방사능(放射能)이 검출(檢出)되는 반면(反面), 비(脾)에서는 극소(極小), 골수(骨髓)에는 전(全)혀 방사능(放射能)이 들어가 있지 않았다. 이 증례(症例)와 같이 transferrin이 없으면 철분(鐵分)은 쉽게 조직(組織)으로 들어가 hemosiderin으로 저장(貯藏)되고 골수(骨髓)는 고도(高度)의 철결핍증(鐵缺乏症)을 나타내어 기관철침착증(器管鐵沈着症)과 철결핍성빈혈(鐵缺乏性貧血)이 동시(同時)에 나타나게 된다. 철대사장애면(鐵代謝障碍面)으로 보아 많은 미해결점(未解決點)이 남아 있으며 앞으로 자라나는 젊은 학도(學徒)들이 구명(究明)할 문제(間題)라고 믿는다.

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