• Proceedings of the Optical Society of Korea Conference
• /
• 2004.02a
• /
• pp.194-195
• /
• 2004

• Proceedings of the Optical Society of Korea Conference
• /
• 2006.02a
• /
• pp.343-344
• /
• 2006

• Proceedings of the Optical Society of Korea Conference
• /
• 2008.02a
• /
• pp.137-138
• /
• 2008

• Proceedings of the Optical Society of Korea Conference
• /
• 2008.07a
• /
• pp.391-392
• /
• 2008

• Magazine of the Korea Institute for Structural Maintenance and Inspection
• /
• v.20 no.4
• /
• pp.25-38
• /
• 2016

• The Optical Journal
• /
• s.174
• /
• pp.20-21
• /
• 2019

(주)비오에스(대표 박진영)가 지난 3월 15일 경기도 시흥에 위치한 한국산업기술대학교 와 함께 비구면렌즈 초정밀 가공을 위해 설립된 (주)비오에스 개업식을 가졌다.

• Korean Journal of Soil Science and Fertilizer
• /
• v.16 no.3
• /
• pp.250-255
• /
• 1983

Newly manufactured compound fertilizers for chestnut trees developed by Chosun Fertilizer Inc. were tested to evaluate their effectiveness. An experiment was carried out in chestnut farm with 4 years old Eungi Var. from 1981 to 1982. The results obtained are as follows: 1. The growth of chestnut trees was generally good in plots of compound fertilizer contained boron (B C F). 2. The number of ripened strobiles was significantly increased by reducing the ratio of dropped strobiles in plot of B C F. 3. The yield of chestnut by B C F was markedly increased, 6 times more than that of compound fertilizer without boron. 4. Boron content in soil and plant by application of B C F was relatively high, resulting in high production of chestnut. 5. B C F was effective in chestnut orchard to increase nut production markedly.

• Journal of Korean Ophthalmic Optics Society
• /
• v.12 no.3
• /
• pp.27-33
• /
• 2007

This research investigated the effects of spherical and aspherical R.G.P lenses which was performed by optometrists in In-Cheon and Kyung-Gi region. This research survey included various questions such as the fitting status, after-care method, preliminary test. Results of the survey revealed that the optometriests sold the asperical and spherical lenses with a ratio of 7:3, respectively, and most of them did not cheked Topography, Fluorescein test by slit lamp biomicroscope, Tear Break up time test, Schirmer test and so on. And, with fitted R.G.P lenses symptoms like light odd-feeling, congestion, eye-stimulus, dimness and dryness were frequently reported. The purposes of this study are to search for the ideal fitting check of R.G.P lens and remind the most important preliminary test for contact lens fitting.

• Journal of the Korean Society for Nondestructive Testing
• /
• v.27 no.2
• /
• pp.183-189
• /
• 2007

Ultra precise processed parts are required together with the development of optoelectronics industry. As important parts of optoelectronics industry, there are ferrule of optical connector and lens for optical devices. In particular, the lens requires high reliability with high precision without including flaws. These optical modules need ultra precise processing in order to reduce the loss of light sources and various nondestructive inspections are carried out in the finishing stage to separate good and bad quality products. Therefore, it was analyzed through the characteristics of response of amplitude and resonant frequency according to the mass variations of aspheric lens that is used currently in laser printers.

• Applied Biological Chemistry
• /
• v.14 no.2
• /
• pp.109-116
• /
• 1971

The nutritional status of sulfur in rice plants grown on various field conditions different in soil fertility, fertilizers used and weather was investigated as follows. 1. The critical percentage of sulfur in rice shoot grown in a sulfur deficient field appears to be over 0.2 around 30 days after transplanting. 2. The mean sulfur contents at harvesting stage were 0.22% and 0.43% in the ear and straw, respectively and increased more in the straw by the application of ammonium sulfate. 3. The ratio of sulfur contents in the straw and ear (straw/ear) showed the increasing tendency from north to south only in the fertilized fields. But it was not as such in the percent translocation, the mean values of which were 26% and 29% in the fertilized and non-fertilized, respectively. 4. The sulfur uptake amounted to 6kg and 10kg per acre in the non-fertilized and fertilized, respectively. 5. The sulfur content was decreased in the order of leaf blade+leaf sheath, stem and ear, and was higher in the low productive field than that of high productive field.