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축산물등급판정소
- KAPE Magazine
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- no.52
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- pp.16-17
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- 2000
등급판정결과에 따라 소도체에 찍히는 도장은 `등급판정인`과 `결함인` 두가지가 있다. 등급판정인은 소도체의 육량등급과 육질등급을 구분하여 판정한 결과를 A1$^+$부터 D등급까지 날인하고 있으며, 결함인은 도체에 결함이 발견 되었을 경우 그 종류에 따라 도체에 표시를 다르게 하며 ㅎ, ㅈ, ㅇ, ㅁ, ㄴ, ㅅ, ㄱ, ㅌ 등 6종류가 있다. 소도체의 경락가격은 1차적으로 육량등급과 육질등급에 의해 달라지지만 결함의 표시유무에 의해서도 크게 달라진다. 이에 결함의 종류에 따라 발생되는 손실과 출현율 등을 2000년 1월부터 10월까지 농협서울공판장에서 등급판정된 한우 51,444두를 대상으로 살펴보기로 하겠다.
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박권우;이정훈;장매희
- Journal of Bio-Environment Control
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- v.3 no.2
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- pp.99-105
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- 1994
The objective of this study was conducted for elucidation of effects of the NO$_3$$^{[-10]}$ -N. NH$_4$$^{+}$-N ratio in the nutrient solution on the growth and quality of welsh onion(Allium fistulosum L.). The pH of nutrient solution increased in NO$_3$$^{[-10]}$ -N : NH$_4$$^{+}$-N ratio of 9 : 1 treatment, decreased in 1 : 1, 1 : 3 treatment, but was stable in 3 : 1 treatment during cultivation. The apparent growth of welsh onion was best in the treatment of 9 : 1(NO$_3$$^{[-10]}$ -N : NH$_4$$^{+}$-N ratio), however the treatment of 1 : 3 resulted in poor growth. The NO$_3$$^{[-10]}$ -N content of the plants increased in proportion to that content of nutrient solution. Pyruvic acid content of welsh onion was highest at 9 : 1, 3 : 1 treatment, and lowest at 1 : 3 treatment.tment.
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최정찬;이민희
- Economic and Environmental Geology
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- v.37 no.1
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- pp.133-142
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- 2004
The purpose of this study is to evaluate a laboratory test on arsenic removal effciency for ARD(Acid Rock Drain-age) using limestone and apatite, and on heavy metals removal efficiencies for AMD(Acid Mine Drainage) using apatite and fish bone. As a result of the laboratory test, pH, arsenic removal rate of limestone & apatite are inversely proportional to flow rates and apatite removes 100% of arsenic while limestone removes 37% of arsenic at 0.6$m{ell}$/min/kg flow rate in case of ARD treatment. And the dissolution amount of apatite is twenty five times higher than that of limestone. In case of AMD treatment, fish bone shows higher dissolution rate than apatite, and pH of outlet water reacted with fish bone is higher than that reacted with apatite. The heavy metal removal rates of fish bone are also higher than that of apatite except arsenic removal rate. The precipitate resulted from fish bone reaction with AMD seems to be biological sludge type while that resulted from apatite with AMD is inorganic solid which can settle easily compared with the biological sludge and can be cemented by gypsum. As the results, apatite can be used as a precipitant for the polluted mine waters showing wide range of pH and fish bone can be used for highly contaminated AMD.
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