• Journal of the Korean Chemical Society
• /
• v.32 no.4
• /
• pp.323-332
• /
• 1988

The bacteria containing urease convert each molecule of urea into two molecules of ammonia and one molecule of carbon dioxide gas. Bacterial electrodes have been constructed by immobilizing the Proteus vulgaris on an ammonia and a carbon dioxide gas-sensors, and were investigated for the effects of pH, temperature, buffer solution, bacterial amounts and interferences, and life time. NH3-bacterial electrode based on ammonia gas-sensor had linearity in the range of $7.0{\times}10^{-4}\;-\;3.0{\times}10^{-2}$M urea in pH 7.4, 0.05M phosphate buffer at $25^{\circ}C$ with a slope of 116.7 mV/decade. While $CO_{2-}$bacterial electrode based on carbon dioxide gas-sensor bad linearity in the range of $7.0{\times}10^{-4}\;-\;5. 0{\times}10^{-2}$M urea in pH 7.0, 0.1M phosphate buffer at $30^{\circ}C$with a slope of $45.4{\times}45.7mV/decade$. As the clinical application, urea in urine was determined by these devices and this result was compared with spectrophotometric method. Consequently, these electrodes could be used for the analysis of many samples because of simplicity, rapidity and convenience of the experimental procedure.

• Proceedings of the KGS Conference
• /
• 2002.11a
• /
• pp.81-86
• /
• 2002

Advances that have been made in improving luminescence dating techniques over the past decade have ushered in new powerful tools in geomorphological research. The method was initially developed for archaeological purposes as a dating technique for fired artefacts such as pottery, tiles and bricks.(omitted)

• Proceedings of the Korean Society of Toxicology Conference
• /
• 2001.05a
• /
• pp.116-116
• /
• 2001

The alkaline Comet assay has been used with increasing popularity to investigate the level of DNA damage in terms of strand breaks and alkaline labile sites in biomonitoring studies within the last decade in western countries.(omitted)

• Journal of the korean veterinary medical association
• /
• v.19 no.4
• /
• pp.22-33
• /
• 1983

Within the past decade, a dynamic new technology has captured the interest of scientists and entrepreneurs alike. Using methods collectively feferred to as 'biotechnology', scientists are manipulating the element most basic to all life-the genetic code. A

• Proceedings of the International Microelectronics And Packaging Society Conference
• /
• 2001.09a
• /
• pp.87-119
• /
• 2001

Fine Pitch Technology will be accelerated among next decade. Buildup Technology is Key Technology for High Density Interconnection. Novel Base Material is critical for High Speed, Area Array Flip Chip Application. Japanese PWB Technology Roadmap will be Published soon.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 1991.10a
• /
• pp.487-495
• /
• 1991

There has been remarkable growth in GDSS research throughout the past decade. The research findings as well as the developments in technology in this area are well - documented in several recent studies (Dennis, George, Jessup, Nunamaker, & Vogel, 1988; Kraemer & King, 1988; Pinsonneault & Kraemer, 1989).

• Proceedings of the Korean Statistical Society Conference
• /
• 2001.11a
• /
• pp.5-12
• /
• 2001

We begin with a brief review of some important advances made in statistical theory over the last decade. The choice of topics is decidedly influenced by personal interests. Based on this review, we then propose some possible scenarios about the future of statistics.

• 대한예방의학회:학술대회논문집
• /
• 1994.02b
• /
• pp.297-312
• /
• 1994

Over the last decade, considerable interest has focused on sample size estimation in the design of clinical trials. The resulting literature is scattered over many textbooks and journals. This paper presents these methods in a single review and comments on their application in practice.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1995.04b
• /
• pp.3-20
• /
• 1995

Advanced ceramics have excellent thermal resistance, wear resistance, corrosion resistance, and other properties, and are promising materials as structural materials. Over the past decade, they have been applied to some machine parts, for example, glow plugs and turbochargers of automotive engines. In the case where the advanced ceramics are used as these structural parts, te low-dimensional accuracy of sintered bodies requires secondary machining.

• The Bulletin of The Korean Astronomical Society
• /
• v.46 no.2
• /
• pp.61.2-61.2
• /
• 2021

We present the current focus issues on biosignature and life in the Solar System and exoplanters considering the possible research items at KASI in collaboration with other fields and institutes. We also suggest possible KASI research projects that can be conducted in the next decade.