• Journal of the Korean Wood Science and Technology
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• 제36권6호
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• pp.105-112
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• 2008

옻칠은 채취된 산지별, 기후변화별, 채취시기별, 저장 등 각각의 요인에 따라 구성성분이 달라지며, 도료로서의 품등도 달라지는 성질을 가진 천연도료라는 점을 고려할 때 옻칠의 품등 구분은 매우 어렵다. 전통적 방법에 의한 옻칠의 품등구분은 옻칠종사자 10명의 패널에 대한 관능평가에 의해 실시하였다. 옻칠종사자들의 전통적인 옻칠 품등구분 방법의 공통점은 색조, 냄새, 점도, 한지 위 퍼짐성, 유리판 위 색조 및 건조성에 의해 판단하고 있으며, 그 외 한지 위 문지르기, 알코올램프 가열에 의한 감량 조사가 있었다. 패널요원 10인에 의한 5개 항목에 대한 전체평균의 결과, 중국산 생칠(E)이 7.03로서 가장 우수하였고, 그 다음이 일본산 생칠(C) 6.84, 한국산 생칠(A) 6.41, 중국산 생칠(D) 5.27 그리고 한국산 화칠(B) 2.50 순으로 나타났다. 그러나, 각 패널들이 평가한 결과는 한지위 퍼짐성에 의한 품등구분 이외에는 서로 다른 견해를 나타내는 경우가 있어 전통적인 방법만에 의한 품등구분에는 객관성과 공정성이 결여될 소지가 있을 것으로 판단된다.

• International Journal of Industrial Entomology and Biomaterials
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• 제4권2호
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• pp.121-126
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• 2002

Breeding programme was initiated during November, 1995 with the main objective to breed productive multivoltine breeds/ hybrids with suitable genetic constitution to suit the fluctuating tropical climate prevailed in India. Two multivoltine breeds viz., BL-24 and BL-27 selected were as breeding resource materials from the silkworm germplasm maintained at Central Sericul-tural Research and Training Institute, Mysore. By adopting hybridization, backcrossing inbreeding and selection, a new multivoltine breed namely BL-67. This breed spins light greenish yellow cocoons and cocoon shape is oval with medium to coarse grains. The evolved breed was crossed with five tropical bivoltine breeds viz., NB4D2, CSR2, CSR5, CSR18 and CSR101 to study the combining ability, and identified a superior hybrid, BL67 ${\times}$ CSR101, named as CAUVERY, The hybrid is characterized by high pupation rate (>95%), high shell weight (> 35 cg), high cocoon shell ratio (> 20%), longer filament length (> 900 m) and high neatness (93) with a renditta of 6.5 producing 2A-3A grade silk. The hybrid is selected for Race Autho-rization test of Central Silk Board.

• 한국표면공학회지
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• 제37권5호
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• pp.263-272
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• 2004

High strength steels such as transformation induced plastic steel, dual phase and solid solution Hardening have been developed and continuously improved due to the intensified needs in the automotive industry. But silicon and manganese in transformation induced plastic steels were known to exhibit harmful effects on galvannealing reaction by oxide film formed during heat treatment. Therefore, in this work, the applicability of Zn-Ni electrodeposition instead of hot dip galvannealed coating to transformation induced plastic steels was evaluated and optimum electroplating condition was investigated. Based on these investigations optimized electroplating conditions were proposed and Zn-Ni electrogalvanized steel sheet was produced by EGL (electrogalvanized line). Its perfomance properties for automotive steel was evaluated.

• 복식
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• 제39권
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• pp.79-89
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• 1998

This study was carried out the effect of stability and color extract for it's condition in the curcuma L.. dyeing. The stability is to investigate the absorbance of the curcumin, one of the major yellow pigments and the stability regarding the effect of light, oxygen temperature and pH. The dyeing condition is compared the effect of mordanting condition and the best way to extract pigment and analysed through the color-fastness rating, color-difference value test. The main results obtained are summarized as follows ; 1.The best and proper solvent to extrect curcumin pigment was a ethanol and a distilled water. 2. The light effect indicated that the absorbances of solution in absence of ligh was more stable. 3. The oxygen(O2) effect to curcumin show-ed that the condition in the absence of O2 was more stable than that in presence of O2 4. The temperature showed that the absorbnace was best stable in4$^{\circ}C$ and less changed at $25^{\circ}C$ 5. The curcumin-etanol solution was stable in pH 2~4. 6. Generally color-fastness rating to silk, wool and cotton indicated that crocking C.F. and perspiration C.F. were more than 3rd grade and dry cleaning C.F. was more than 4th grade. But light color-fastness and washing color-fastness were very poor. 7. To make good color fastness, the mordan-ting treated group and the pre-mordant conditions were more effective than others 8. When compared with color-difference value test indicated that the silk was looks like more reddish and bluish color and than the wool and cotton were greenish and bluish. As a mordant, A(C2H4OH(COOH3) and D(K2Cr2O7)were more effective to make green-ish color in the silk and the reddish color was abtained by B(Al.K(SO4)2.12H2O) and C(FeSO4.7H2O).

• 대한치과보철학회지
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• 제47권1호
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• pp.12-20
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• 2009

연구목적: 임플란트가 식립되어질 때 매식체는 조직액과 접촉하게 된다. 임플란트의 조직액 흡착은 표면처리에 따라 다양하게 나타난다. 이 때 임플란트 시편의 표면 거칠기와 젖음성과의 상관관계를 분석하고자 하였다. 연구재료 및 방법: 표면 거칠기와 젖음성의 상관관계를 측정하기 위해 네 종류의 임플란트 시편을 각각 5종류 만들었다. 각각의 그룹은 그룹 A: Machined Surface, 그룹 B: Anodized surface, 그룹 C: RBM (HA blasting) surface, 그룹 D: CMP (calcium methaphosphate) coating surface이다. 연구결과: 1. 표면의 거칠기는 RBM, CMP, Anodized, Machined 그룹 순서로 거칠었다. RBM과 CMP는 통계적으로 유의차가 없었다 (P<.05). 2. 젖음성은 Anodized, RBM, CMP, Machined 그룹 순서로 높았다. CMP와 Machined는 통계적으로 유의차가 없었다 (P<.05). 3. 표면 거칠기와 젖음성과의 상관관계는 없었다.

• Journal of Preventive Medicine and Public Health
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• 제22권3호
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• pp.337-354
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• 1989

In order to evaluate the noisy environment and hearing loss of workers served in noisy working environment, the author investigated 212 manufacturing industries located in Ulsan Industrial District that could be observed for 3 successive years from 1986 to 1988. The obtained results were as follows: 1. There was increased tendency in the number of workers served in noisy working environment and that of examined of hearing loss for three years. 2. In the noise level of working environment, the number of industries less than 89dB(A) was increased every year, while more than 90dB(A) was in decreasing tendency. 3. Mean hearing loss by frequency was the most prominent in 4,000Hz, the level of hearing loss was in increasing tendency yearly, and that of left eat was higher than right ear in almost all type of industry. 4. In 1986, the level of hearing loss by type of industry was highest in manufacture of electric and electronic, and followed by paper and plywood, and metal products in right ear: that was in the order of manufacture of electric and electronic, metal products and textile products in left ear. In 1987, that was in the order of manufacture of metal products, machinery and others in right ear, and metal products, machinery and food stuff in left ear in 1988, manufacture of others, food stuff and machinery in both ear. 5. In hearing loss by service duration, right ear of 5-9 years group was higher than that of less than 5 years in 1987, whereas in 1988, the longer in service duration, the higher in the level of hearing loss in both ear. 6. In 1986, 1987 and 1988, the prevalence rate of noise-induced hearing loss were showed increasing tendency as 0.4% ,0.8% and 1.5% , respectively, and manufacture of textile products was highest(1.0%) in 1986, machinery(1.2%) in 1987 and others(2.8%) in 1988. 7. The proportion of grade E in early loss index were 76.1% (1986), 78.2% (1987) and 80.5% (1988) in left ear, 75.9% (1986), 76.4% (1987) and 75.9% (1988) in right ear.

• International Journal of Industrial Entomology and Biomaterials
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• 제10권2호
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• pp.147-151
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• 2005

Serious attempt for the improvement of quality parameters in silkworm hybrids came rather very late in India. Realising the need for productive breeds to the field and reorientation in breeding methodology, the silkworm breeders of CSRTI, Mysore were able to develop silkworm breeds with fine denier namely, JPN7, CSR48, B63 and B65 of specific industrial requirement through directional selection. As the success of silkworm breeds mainly depends on their combining ability, the developed breeds were subjected for hybrid evaluation. Out of 42 bivoltine hybrids studied, one hybrid, $CSR48{\times}CSR5$ was identified for its superiority over the existing bivoltine hybrids namely $CSR2{\times}CSR4,\;CSR2{\times}CSR5\;and\;CSR18{\times}CSR19$ for majority of qualitative traits. Post cocoon testing of large quantity of cocoons of $CSR48{\times}CSR5$ resulted in the production of high quality '3A'grade silk. It is for the first time in the Indian Sericulture industry that high quality silk with longer filament length of 1474 m, denier of 2.47, standard size deviation of 0.983 d, maximum size deviation of 1.322, neatness of 96 p, reelability of $85\%$, tenacity of 3.87 g/d, elongation of $22.32\%$ and cohesion of 110 strokes was produced. The superiority of fine denier silkworm breeds and their hybrids are discussed.

• 대한가정학회지
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• 제27권4호
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• pp.11-20
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• 1989

Teen-agers are much concerned for their appearances. Their clothes reflect their living conditions and serve as a means to represents themselves as well. They also show great concern for the clothes of students of an age. So to guide their clothing behaviours in school plays a very important role in the living guidance of students. From this point, this study was aimed at examing closely the differences of recations as to the girl students' clothing behaviours between boy students and girl students of high school, and the correlation between environment condition and reaction upon the clothing behaviours of girl students. To check the physical environment condition of the family, the family circumstances test, made and standardized by Jung Won Sik, was used. To check the clothing behaviours of girl students, four items-modesty, fashion and esthetics were made and each item had five questions, wihich comprised fifteen questons all told. The subjects of this study included students in eight high schools located in Incheon, totaling 930 boys and girls. The results of this study were summarized as follows: 1. There are great differences in students' reaction upon girl students' clothing behaviours according to their physical circumstances level, sex, grade years and the degree of concern for other sex. (A) The correlation between students' physical circumstances level and their reaction upon the girl students' clothing behaviours is high in all the three items. The higher the students' circumstancses level is, the lower their reaction upon modesty is, and the higher their reaction upon fashion. In case of esthetics, only girl students show great concern for it. (B) As to the reaction upon the girls students' clothing behaviours by sex, girls show higher concern for modesty, fashion and esthetics than boys. (C) As to the reaction upon the girl students' clothing behaviours by the grade years, the first year students as a whole show higher concern for modesty than second grade year students. (D) As to the reaction upon the girl students' clothing behaviours by the degree of concern for other six, the more concern both the boy and the girl students have for other sex, the higher their reactions are upon fashion and esthetics, but the lower upon modesty. 2. From the point of reactions upon the girl students' clothing behaviours, (A) as to fashion, free variables can explain by 7.8 percent the degree of concern for other sex, physicial circumstances level, and sex in that order. (B) as to fashion, free variables can explain by 5.4 persent the concern for other sex, physicial circumstances level, and sex in that order. (C) as to esthetics, free variables can explain by 4.8 percent the concern for other sex, physicial circumstances level, and sex in that order. From the above analysis, the following are included: The concern for other sex has the greatest influence on the girl students clothing behaviours, the physicial circumstances level the nest, sex the third and the grade year the last.

• 한국방재안전학회논문집
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• 제12권2호
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• pp.15-24
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• 2019

선행연구에서는 강원지역을 대상으로 실제 고속도로 토석류가 발생한 지점의 시계열 강우정보와 강원지역의 강우정보를 이용하여 1시간, 6시간, 3일 확률 강우량을 고속도로 토석류 평가등급에 따라 강우기준으로 사용하는 연구를 수행하였다. 이 연구에서는 선행연구를 통해서 선정된 3가지 강우기준의 적절한 조합과 토석류 평가등급에 따른 강우기준 조정을 통해 실제 고속도로 토석류 조기경보 기준을 제안하였다. 또한, 2013년 토석류가 발생한 5개 지점에 대해서는 강수량이 많았던 2010~2012년 시계열 강우자료를 이용하여 모의평가를 수행하였다. 연구결과, 적절한 조합의 고속도로 토석류 조기경보를 위한 기준이 마련되었으며 등급별 기준조정의 경우에는 토석류 평가등급 C, D, E의 경우는 현실적인 점을 고려하여 B등급의 값으로 통일하여 적용하는 것이 바람직할 것으로 판단된다. 또한, 모니터링의 피로도가 문제가 되지 않는다면, 그 이상인 A 또는 S로 조정하는 것도 고속도로 토석류 발생에 대해 적극적으로 대처하는 방법이 될 수 있다고 판단된다.

• 자원환경지질
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• 제19권spc호
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• pp.227-237
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• 1986

The Duk-Eum mine located in Kongsan-myeon, Naju-gun, Cheolanamdo is producing silver ore mainly, with rare gold association. The grade-up and recovery of the concentrates have been concerned to the main problem. And then, this study aimed at applying the basic data for ore processing. In the first half of the study, the attempts were made to identify the ore minerals, this followed by determination of the mineral texture, paragenesis, grain size, and size distribution by employing the microscopical method and the etching test. The results of the study are as follows: 1. The ore deposit is composed of the hydrothermal fissure linked veins, and filling cavities are mostly tensile fractures or joints, in rhyolitic rocks as a wall rock. 2. The principle ore minerals are native silver, acanthite, canfieldite, pyrargyrite, galena, tetrahedrite, sphalerite, pyrrhotite, chalcopyrite, chalcocite, covellite, zincite, and the gangue minerals are quartz and calcite. 3. The grain size of each ore minerals before grinding are; max. $2\frac{1}{2}$ mesh, medium 48-100 mesh(main size, contained over 80%), min. 3200mesh. And the grain size of each ore minerals after grinding is; max. 42mesh, medium 65-250mesh(main size, contained over 80%), min. 3200mesh. 4. The properties of the mineral texture effected on the ore dressing are follows; a) Inclusion texture; the fine grains of chalcopyrite is included in most acanthite, and rarely, that of galena included in acanthite. b) Exsolution texture; pyrargyrite is exsolved in acanthite. c) Replacement texture; native silver replaced pyrargyrite, and acanthite replaced galena. d) Interlocking paragenetic texture; the interlocking paragenetic minerals are pyrite, chalcopyrite, chalcocite, canfieldite. e) Fissure filling texture; chalcopyrite was filled along the cracks in acanthite. Among of the above texture, it is impossible to liberate the grains of a), and more difficult to liberate those of b) and c), while easy to liberate those of d) and e).