청자 유약 발색메카니즘에 대한 뫼스바우어 분광법에 의한 연구

김종영,노형구,전아영,김응수,조우석,김경자,김진모,김철성,Kim, Jong-Young,No, Hyung-Goo,Jeon, A-Young,Kim, Ung-Soo,Cho, Woo-Seok,Kim, Kyung-Ja,Kim, Chin-Mo,Kim, Chul-Sung 한국세라믹학회 2011 한국세라믹학회지 Vol.48 No.1

Systematic study on relationship between celadon coloring and glaze component was conducted by chromaticity analysis and M$\ddot{o}$ssbauer spectroscopic analysis. The chromaticity ($L^*$, $a^*$, $b^*$ values) and M$\ddot{o}$ssbauer analysis results were correlated to the amount of $Fe_2O_3$, $TiO_2$, MnO, and $P_2O_5$, which are the essential factors influencing celadon coloring. According to chromaticity analysis, celadon glaze color belongs to GY group when the addition of $TiO_2$ was 1.4%, whereas the color belongs to BG group when the addition of $TiO_2$ was 0.1%. For the GY group, the colors change from GY to YR with the decrease of brightness as the addition of $TiO_2$, MnO, and $P_2O_5$ increases. According to M$\ddot{o}$ssbauer analysis results, as the amount of divalent iron ion increases, the $a^*$ and $b^*$ values decrease, on the other hand, $L^*$ value increases. The ratio of divalent iron ion produced in reductive sintering process is found to be 80~95% in this study, which induces the increase of $L^*$ values in celadon glaze.

군 모바일 단말기를 위한 자가적응 소프트웨어 기반 MOSAIC 아키텍처 설계 및 검증

김종영,윤희병,Kim, Jong-Young,Yoon, Hee-Byung 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.5

An environment in which the software is operated become more complex and changed dynamically. Such software requires the ability to adapt in accordance with operating environments, by monitoring the changes of user requirements and operating environments. Especially, the mobile device used in military operation requires more dynamical adaptation than the mobile device in normal environment. In this paper, we propose MOSAIC architecture based on Self-Adaptive Software suitable for military mobile device and verify the results. The proposed architecture consists of context manager, evaluation manager and adaptation manager. We simulate the MOSAIC architecture by modelling PRE(Position Reporting Equipment) used in the army and verify four types of operational mode and dynamical reconfiguration of user interface.

국내 도석 광물의 물리화학적 물성 및 도자기 원료로서 소결 특성 평가

김종영,김응수,황광택,Kim, Jong-Young,Kim, Ung-Soo,Hwang, Kwang-Taek 한국결정성장학회 2019 한국결정성장학회지 Vol.29 No.5

국내에서 생산되는 태백도석, 해남도석, 압해도석, 행남도석을 수집한 후, 정제되지 않은 원료는 산처리 공정을 수행하고 도자기용 소지로 제조한 후, 산화 및 환원 소성하여 소성체의 물성을 평가하였다. 정제되지 않은 태백, 압해도석의 경우, 산처리 공정을 통하여 철분 함량을 1.0 % 이하로 감소시켰다. 또한, 산처리 전 도석의 입도는 mean size $8{\sim}18{\mu}m$으로 정제된 도석의 $5.7{\sim}10{\mu}m$에 비교하여 입도가 크고 굵은 입자가 많아 넓은 입도분포를 가졌다. X선 회절법을 이용한 결정상 분석결과에 따르면 대부분의 도석은 소성 전에는 석영(Quartz)을 주상(main phase)로 하고 납석(Pyrophyllite)를 포함하는 결정구조를 보이고 있으며, 해남도석의 경우에는 할로이사이트(halloysite) 결정상을 포함하고 있음을 알 수 있다. 소성체의 흡수율은 태백A/B/C~압해A/B < 태백특A < 행남 < 해남 순으로 나타났으며 환원 소성한 경우가 더 낮은 흡수율을 보였다. 이러한 흡수율 경향은 도석 광물에 포함된 장석(융제)의 함량 때문인 것으로 판단된다. 소성체들의 색상을 비교하면 산처리 공정후, 정제원료(태백특A, 해남, 행남)가 산처리한 비정제 원료(태백A/B/C, 압해 A/B)에 비하여 백색도가 높음을 알 수 있다. 소성체의 비교에서 정제원료의 백색도의 인자인 L* 값이 95~97 %로 비정제 원료(산처리 공정후)의 82~96 % 보다 높은 것을 확인할 수 있다. 이것은 비정제 원료를 산처리하여 철분을 제거하였음에도 불구하고 철분 함량(0.41~1.91 %)이 정제원료의 철분함량(0.11~0.58 %) 보다 높기 때문으로 판단된다. Physicochemical properties and sintering characteristics of pottery stone (Taebaek, Haenam, Aphae, Haengnam) were evaluated as a raw material for porcelain products. Due to acid leaching procedure, the concentration of iron oxide ($Fe_2O_3$) was decreased to < 1.0 wt%, which affects the whiteness of sintered samples. Mean particle size of acid leached samples is $5.7{\sim}10{\mu}m$ with narrow particle size distribution (PSD), which is lower than that of the pristine ($8{\sim}18{\mu}m$) with broad PSD. According to phase analysis by X-ray diffraction, most of pottery stones (PS) have Quartz phase as a main phase with Pyrophyllite as a second phase, however, Haenam PS shows halloysite phase. The absorption rate was in order of Taebaek (A, B, C)~Aphae (A, B) < Taebaek (Special A) < Haengnam < Haenam, and the samples sintered in reductive atmosphere showed lower absorption rate. This result might be due to the concentration of feldspar contained in PS, working as a flux in sintering process. Comparing the color of the sintered samples, the whiteness of refined PS (Taebaek special A, Haenam, Hangnam) is higher than acid leached PS (Taebaek A/B/C, Aphae A/B). The whiteness (L*) for refined PS is 95~97 %, which is higher than acid leached (82~96 %). This might be due to lower iron oxide concentration of the refined PS (0.11~0.58 %) than those of the acid leached PS (0.41~1.91 %) even though most of iron oxide was removed by acid leaching.

악관절진동의 임상적 관련요인에 관한 연구

김종영,남천우,한경수,Kim, Jong-Young,Nam, Gheon-Woo,Han, Kyung-Soo 대한안면통증구강내과학회 1999 Journal of Oral Medicine and Pain Vol.24 No.1

This study was performed to investigate the factors related to vibration of temporomandibular joint during mandibular opening movement. For this study, 144 patients with temporomandibular disorders were randomly selected. Angle's classification, lateral guidance pattern, range of maximal mouth opening, preferred chewing side, and affected side were investigated clinically. Mandibular torque rotational movement during opening was recorded with $BioEGN^{(R)}$ and vibration of temporomandibular joint during opening was recorded with $Sonopak^{(R)}$. After clinical diagnosis was made, visual analogue scale(VAS) was used for evaluation of clinical progress of the subject's chief complaints. The author calculated VAS treatment index(VAS Ti) from the record of VAS. The more VAS Ti was, the less remission of subjective symptom was, The data were analyzed with SAS/Stat program and the results of this study were as follows: 1. There were no significant difference in all the variables of joint vibration by age and sex. 2. Integral and peak amplitude in patients of Angle's class I were higher than those of class II or III patients. Integral in patients of group function was higher than that in patients of canine guidance or other types of lateral excursion. 3. As to Angle's classification or lateral guidance type, there were almost not significant difference between subgroup of same class or type and subgroup of different class or type on both sides. And there were also almost not difference between one side and the other side related to preferred chewing side or affected side. 4. Patients with disk displacement with reduction showed higher value of integral and peak amplitude than any other patients. 5. Joint vibration variables significantly correlated with VAS Ti of pain. with clinical range of mouth opening, and with ingredients of mandibular torque rotational movement.

점토 광물을 이용한 도자기용 소지 제조 및 물성 평가

김종영,Kim, Jong-Young 한국결정성장학회 2019 한국결정성장학회지 Vol.29 No.6

본 연구에서는 도자기 제조용 원료(소지)에 사용되는 점토 광물의 물성 및 이로부터 제조된 소지의 품질을 조사하였다. 국내시장에 유통되고 있는 점토광물 중 중국에서 수입된 점토 (블랙점토, 홍점토, 백점토)와 충남 천안, 경남 산청에서 생산된 천안점토, 오부점토를 선택하여 비교 평가하였다. 화학분석 결과, 카올리나이트 등 1차 점토 외에 불순물로 CaO, K₂O, Na₂O을 포함하는 장석류(카리장석, 소다장석, 회장석)와 규석(SiO₂)이 포함되어 있으며 중국산 점토보다 국내 점토가 규석 및 장석질이 더 많이 함유되어 있음을 알 수 있었다. 도자기의 색상을 좌우하는 철분(Fe₂O₃)의 함량에 대해서는 천안점토, 오부점토, 홍점토의 경우 5 % 이상으로 붉은 색상을 띄며 중국산 (블랙점토, 백점토)에 비하여 철분 함량이 더 높음을 알 수 있다. X-선 결정상 분석을 통하여 원료광물에 존재하는 결정상의 종류를 분석한 결과, 원료 물질 모두 카올리나이트와 할로이사이트 등 1차점토와 함께 쿼츠(quartz)와 장석 등이 주요 결정상(main phase)으로 확인되었다. 이러한 점토광물을 원료로 하여 도자기용 소지를 제조하여 소결 후 물성을 평가하였다. 소성 후 수축률은 백자A급 < 백자B급 < 연분청 < 진분청 < 청자 소지 순으로 나타났으며 환원소성의 경우, 산화소성에 비하여 수축률이 높으며 이는 흡수율 결과와 일치하였다. 1250℃에서 환원소성한 경우, 매우 낮은 흡수율로 자화가 충분히 진행됨을 알 수 있다. 백자소지를 1200℃, 1250℃ 산화분위기에서 소성한 소성체가 환원소성한 소성체보다 백색도가 높으며, 백색도의 인자인 L^* 값이 86~95 %로 환원소성시 81~93 % 보다 높은 것을 알 수 있다. 철분 함량이 높은 청자소지나 분청소지의 경우, 환원분위기에서 소성한 소성체가 산화소성한 소성체보다 백색도가 높으며 a^*, b^* 값이 작은 양상을 확인할 수 있으며, 이는 Fe₂O₃ 산화물의 환원효과에 의한 것으로 판단된다. In this work, we investigated clay and raw materials from China (black clay, red clay, white clay) and Korea (Cheonan clay, Obu clay) used for the manufacture of porcelain products. According to chemical analysis results, feldspar components containing CaO, K₂O, Na₂O and quartz are found in clay materials besides primary clay such as kaollinte, for the clay materials from Korea, which is found more in clay materials from Korea than from China. For the Fe₂O₃ content, governing whiteness of porcelain products, more iron oxide (> 5 %) is found in Korean clays (Cheonan clay, obu clay, red clay) compared to those form China (black, white clay). Through X-ray diffraction analysis, kaolinite and Halloysite are found to be main phases for all the raw materials and second phases such as quartz and pyrophyllite are found. Using these clay materials, raw materials for porcelain products were produced, and the physicochemical properties were investigated for sintered samples. Absorption rate is in order of Baekja-A < Baekja-B < Yeonbuncheong < Jinbuncheong < Cheongja, and the sample, sintered at 1250℃ in reductive atmosphere, exhibits the lowest absorption rate. Comparing the color of the sintered samples, the samples sintered in oxidative atmosphere (L^* value: 86~95 %) show higher whiteness value than those sintered in reductive atmosphere (L^* value: 81~93 %). For the Cheongja and Buncheong, the samples sintered in reductive atmosphre shows higher whiteness, L^* values, and low a^*/b^* value, which is due to reduction of iron oxide (Fe₂O₃).

도시탐색 - 김천 작은 도시의 매력

김종영,Kim, Jong-Young 대한건축사협회 1998 建築士 Vol.1998 No.7

중국 연길시 조선족 소학교시설 기초연구

김종영,Kim, Jong-Young 한국교육시설학회 2011 敎育施設 Vol.18 No.3

Yanji city in China is a city most populated with Korean-chinese. This study is to examine architectural planning characteristics for Korean-chinese Elementary schools in Yanji city. Currently, this city includes nine Korean-chinese schools. This research has been processed with regards to three broad aspects. Firstly changing processes of school systems, secondly local distributions and networks of school facilities, and thirdly site plans, floor plans and elevations of school buildings were analyzed and examined for finding their characteristics. For this study, seven Han-chinese Elementary schools were also analyzed. The study result are as following: 1. Korean-chinese schools have followed national education policies and also maintained Korean-chinese native education methods. The schools have undergone merger and separation with Han-chinese Elementary schools. Three Korean-chinese Elementary schools in Japan Colonials, two schools in the period of the Republic of China foundation and its growing, and four schools in 1980s were founded. 2. Yanji city administers the networks of Korean-chinese school districts and Han-chinese districts separately. All school districts apply to lkm standard as attending distance. The networks are adjusted as per population change. 3. The characteristics of buildings' site plans, floor plans and elevations are simple. Layouts of the schools are - type or -type centered playground. Building plans show one side corridor type and 5 stories mostly. Elevations stress central parts. Various forms such as finger types do not appear in mass planning since the school curriculum and extracurricular activities are not seemingly active. Han-chinese Elementary schools have similar conditions.

중국 연변 조선족과 한족피 집합주택 평면구성 비교 연구 - 연길시를 중심으로 -

김종영,Kim Jong Young 한국주거학회 2004 한국주거학회 논문집 Vol.15 No.4

The aims of this research are to find the difference of space origination between Korean-Chinese and Chinese multi-family housing unit plan and to find the main reason to make this difference. To do this research, twenty three different kinds of floor plans were surveyed and examined. The results are as follows; 1. The Chinese-Korean floor plan and Chinese floor plan in Ondol heating system are totally different, although in radiator and floor panel heating system are similar. The inner space origination between two races are different. That is to say, Chinese-Korean likes open space origination and Chinese likes closed space origination. 2. The main reasons to make differences seem to be living style, heating system, constructional method and the trade with South Korea. In the future time, the usage of floor panel heating system will be increased and various kinds of floor plan should be introduced.

탈중과 탈경계운동 -촛불운동의 구성과 동학

김종영 ( Jong Young Kim ) 한국사회역사학회 2012 담론 201 Vol.15 No.1

COD 및 N 제거를 위한 에탄올아민의 이온교환 및 수지 재생특성 연구

김종영(Kim, Jong-Young),정은선(Jeong, Eun-Sun),구희권(Ku, Hee-Kwon),이인형(Rhee In Hyoung),박병기(Park, Byung-Gi) 한국산학기술학회 2008 한국산학기술학회 학술대회 Vol.- No.-

ETA(Ethanolamine, 에탄올아민)는 Amine의 일종으로 정밀화학 제품의 중간원료로서 화학제품 제조나 비행기 기관 및 원전 2차계통의 부식방지제, 이산화탄소와 같은 산성 성분을 흡수하는 흡수제로 각종 산업에서 다양하게 사용되고 있는 화학물질이다. 이러한 ETA는 탄소와 질소, 산소로 이루어진 매우 안정된 유기화합물로 상온에서는 휘발성을 띠지만, 산/염기 평형상수가 9 이상이므로 9 이하일 경우에는 수중에 존재하며 COD 및 T-N을 유발하므로 제거해야 한다. 따라서 본 연구에서는 수중에 존재하는 ETA를 제거하기 위해 온도와 농도에 따른 양이온교환 및 재생용액의 농도, 반응시간에 따른 양이온 교환수지 재생특성을 조사하였다. 양이온교환 수지의 이온교환능력은 ETA의 농도 및 온도에 영향을 받았으며 농도와 온도가 증가할 수록 파과시간은 단축되었다. 양이온교환 수지의 재생효율은 재생액의 농도 및 반응시간에 영향을 받았으며, 재생액의 농도 및 반응시간이 증가할수록 재생효율은 증가하였다.