• Korean Journal of Food Science and Technology
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• v.37 no.4
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• pp.685-694
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• 2005

Korean practices in tolerance setting of pesticide residues on food crops were compiled with an effort to harmonize with international standards. Based on scientific data including historical background, limit setting protocols, adoption of ADI values, food factors, nation's body weights, and regulatory margins which are required for the setting of maximum residue limits, necessary measures to be taken by Korean regulatory authorities were proposed.

• Journal of Aquaculture
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• v.14 no.3
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• pp.165-171
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• 2001

Tolerance limits of the adult crab were determined by exposing them to different temperatures (5~2$0^{\circ}C$) and salinities(12~32$\textperthousand$). The tolerance limit for high temperature was determined at 14$^{\circ}C$ and 16$^{\circ}C$ for male and female snow crab, respectively and that for salinity was 21 $\textperthousand$ at 5 $^{\circ}C$. Osmolality concentration, Na$^{+}$ and $K^{+}$ ions in the haemolymph of especially, the females was positively related to the salinity changes. Increased water temperature resulted in a marked decreased in ionic and osmolality concentrations near the limit of tolerance in male, however, such a clear pattern was not apparent for the females. The concentration of glucose in the haemolymph was positively related to water temperature but negatively to salinity.ity.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2007.04a
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• pp.258-261
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• 2007

The objective of this paper is to examine the ways in which to implement MEPS method for setting the design and operational limits in order to provide the guaranteed performance of the aircraft engine. Direct adder arithmetically added and related with the effects of ambient humidity, engine quality, throttle set tolerance and deterioration, etc is described with the random adder added in root square sum. The method was applied on the preliminary design of 4,000Ib class turbofan engine and the MEPS for engine component design and operational margin was generated.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1994.04a
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• pp.43-48
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• 1994

A wide band design method of an electromagnetic wave absorber using exponentially tapered ferrite which has very wide band frequency characteristics is proposed and discussed. The wide band electromagnetic wave absorber can be designed by the proposed equivalent material constants method for the regions varying spatially in the shape of ferrite. Furthemore the wide band ferrite electromagnetic wave absorbers with taper which have not only excellent reflectivity frequency characteristics but also the band width of 30MHz to 2150 or 2450MHz under the tolerance limits of -20dB reflectivity were designed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1994.10a
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• pp.59-68
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• 1994

A wide band design method of an double layerred electromagnetic wave absorber sintered ferrite which has a flat and an anti-grid shape layers is proposed and discussed. The wide band electomagnetic wave absorber can be designed by the equivalent material constants method for the each layer, As a result the wide band ferrite electonmagnetic wave absorber with the band width of 30MHz to 3670, 3680 or 3690MHz were designed under the tolerance limits of -20dB reflectivity.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.942-946
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• 1995

Using database obtained by means of experiments, or using the synamic behaviour analysis program of automotive shock absorber, database system is constructed within the limits of adequate reliability. Thus constructed data base can be used to find out corresponding specification of shock absorber design parameters to the required damping ability and tolerance.

• Journal of the Korean Institute of Telematics and Electronics
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• v.26 no.11
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• pp.1721-1727
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• 1989

Carbon-ferrite microwave absorbers were designed experimentally and fabricated trialy, as a result of which the relative frequency bandwith of 7.3 to 8.2% were obtained under the tolerance limits of the reflection coefficients lower than -20 dB, and the matching thickness becomes 1.4 to 1.6mm, which is significantly thinner than that of the conventional ones. Furthermore, attenuation has been founded by measuring the material constants of the microwave absorbers for microwave oven and the results are compared and discussed.

• Journal of the Korean Institute of Navigation
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• v.18 no.2
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• pp.151-158
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• 1994

A wide band design method of an electromagnetic wave absorber using exponentially tapered ferrite, which has very wide band frequency characteristics, is proposed and discussed. The wide band electroma-gnetic wave absorber can be designed by the proposed equivalent material constants method for the re-gions varying spatially in the shape of ferrite. Futhermore, the wide band ferrite electromagnetic wave absorber with taper, which have not only exce-llent reflectivity frequency characteristics but also the band width of 30MHz to 2150 or 2450MHz under the tolerance limits of -20dB reflectivity, were designed.

• Journal of the Korean Institute of Navigation
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• v.14 no.1
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• pp.9-19
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• 1990

Microwave absorbers for X-Band RADAR have been designed and fabricated trialy both in sheet and paint types, as a result of which the relative bandwidth of nearly 8% in both cases has been obtained under the tolerance limits of the reflection coefficients lower than -20dB. The matching thickness becomes 1.36 to 1.56mm which is significantly thinner than that of the conventional ones. Furthermore, it was shown that the microwave absorbing characteristics vary in accordance with the density and the mixing ratios of the materials constituting absorbs.

• The Plant Pathology Journal
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• v.17 no.1
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• pp.1-8
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• 2001

The technique of plant transformation has started to show off its great power in the area of plant breeding by commercially successful introduction of transgenic varieties such as herbicide tolerant soybean and insect resistant corn in USA with an unimaginable speed. However, in contrast with the great success in the commercialization of herbicide tolerance and insect resistance, the transformation works on disease resistance has not yet reached the stage of full commercialization. This review surveys the current status of molecular breeding for plant disease resistance and their limits and problems. Some novel ideas and approaches in molecular breeding for disease resistance are introduced.