• 한국식품조리과학회지
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• 제13권1호
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• pp.40-46
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• 1997

약과의 제조조건에 따른 탈수량 및 유지 흡수량의 변화와 그때의 품질특성을 알아보고자 반죽을 냉장.냉동했을 경우 및 반죽의 크기, 튀김온도와 반죽횟수, 원료배합량을 달리하였을 경우의 탈수량 및 유지 흡수량의 변화, 관능적 특성 등을 조사하였다. 반죽을 냉장.냉동 했을 경우 control군과 탈수량, 유지 흡수량, 관능적 특성에 차이가 없었다. 반죽의 크기를 중, 대, 소로 하였을 경우 크기가 작을수록 탈수량과 유지 흡수량이 증가하였고, 크기가 중인 것이 전반적인 기호도에서 기호도가 가장 높았다. 튀김온도(12$0^{\circ}C$ 36분, 14$0^{\circ}C$ 16분, 16$0^{\circ}C$ 11분, 18$0^{\circ}C$ 7분)의 영향은 탈수량은 거의 차이가 없으나 유지 흡수량은 온도가 높을수록 감소하였다. 반죽횟수(30회, 200회)의 영향은 탈수량은 거의 차이가 없으나 유지 흡수량은 반죽횟수가 많을 때 감소하였다. 원료배합량에 따른 영향은 참기름, 꿀, 소주의 배합량이 증가하면 탈수량이 증가하였는데 소주의 경우 탈수 정도가 컸다. 유지 흡수량은 참기름의 경우는 첨가량의 증가에 따른 유의차가 없었고, 꿀의 경우는 첨가량이 증가하면 유지 흡수량이 유의적으로 증가하였으며, 소주의 경우는 첨가량이 증가하면 유지 흡수량이 유의적으로 감소하였다. 튀김온도, 반죽횟수, 원료배합비를 달리한 약과의 관능평가에서는 유지 흡수량이 많은 약과의 경우 광택, 연한 정도, 부서지는 정도, 기름 맛 등의 특성이 강하다고 평가하여 위의 제조조건이 약과의 유지 흡수량과 그에 따른 관능적 성상에 큰 영향을 미친다는 것을 알 수 있었다.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2001년도 봄 학술발표논문집
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• pp.41-42
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• 2001

The objectives of this study were to investigate the effect of the physical properties of wick on the water absorption of substrate. Physical properties of wick in this study were cotton composition, width and length. The water Infiltration rate through the wick was 0.24 ㎝/s at 90 -95% cotton content, which was faster than at 80-85% (0.13 cm/s) and 70-75% (0.08 cm/s). As the cotton content increased, the water absorption of substrate became greater : the amount of absorbed water was about 5-7g higher at 90-95% than at 80-85% and 70-75% at a wick width of 1 ㎝, the velocity of water absorption through the wick was fastest with 0.25 ㎝ㆍs/sup -1/. The amount of absorbed water was higher at 3 ㎝ than at 1 and 2 ㎝. However, the water absorption rate through the cross - sectional area of wick (g H₂O /㎠/hr) was higher at a wick width of 2 ㎝ than at those of 1 and 3 ㎝. The amount of absorbed water in the substrate was higher at 2 : 1 than at 1 : 1 (length in substrate : length out of substrate). Absorbed water amount was larger at 30-40% initial moisture content than any other treatment.

• 생물환경조절학회지
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• 제10권2호
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• pp.125-131
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• 2001

순환식 펄라이트 재배에서 오이의 양액흡수는 일사량 변화와 관계없이 단위일사량당 흡수량이 80~100 mg.MJ$^{-1}$까지 증가 후 일정하게 유지되어 양액흡수 지표는 전체 양액흡수량보다 단위일사량당 양액흡수량이 더 적합하였다. NO￣$_3$-N의 흡수량은 초기에 3 mg.MJ$^{-1}$에서 후기 16 mg.MJ$^{-1}$로 상승하였고 Ca는 초기에 3mg.MJ$^{-1}$에서 후기에 14 mg.MJ$^{-11}$ 로, Mg는 초기에 1 mg.MJ$^{-1}$에서 후기에 5 mg.MJ$^{-1}$로 증가되었으나, 정식 후 62일 이후의 증가세로 둔화되었다. K는 초기에 5.0 mg.MJ$^{-1}$에서 후기 18 mg.MJ$^{-1}$로 증가되었으나 지속적인 증가를 보여주지 못하였는데 이것은 오이의 하엽 제거로 인한 결과로 생각되어진다. 그러나 P는 초기에 0.5 mg.MJ$^{-1}$에서 후기의 3.2mg.MJ$^{-1}$로 지속적으로 증가되었다. S는 초기에 0.5 mg.MJ$^{-1}$에서 증가에 6.5 mg.MJ$^{-1}$까지 증가되다가 후기에 2.7 mg.MJ$^{-1}$로 감소되었다. 오이의 각각의 무기이온 흡수량과 가장 상관이 높았던 요소는 정식일수와 엽면적이었으나 이 두 요소와 단위일사량당 양액흡수량과는 $r^2$=0.92, 0.97로 높은 상관을 보였다. 단위일사량당 양액흡수량을 이용한 각각의 무기이온 흡수량 회귀식은 $r^2$=0.9 이상으로 높은 상관관계를 보여 실용적 이용이 가능할 것으로 보였다.

• Journal of Plant Biology
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• 제22권1_2호
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• pp.5-14
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• 1979

In several leguminous plants such as acasia, arrowroot and bushclover, growth rate and contents of nitrogen, phosphorus and potassium in the tissues and the variation in the culture media were determined. In water cultrue which was free of added nutrients, nitrogen was found to be largely in the form of nitrate(NO3-N). This NO3-N is believed to be the result of nitrification from NH4-N which was apparently released form the plants. From the studies of organ culture with root segments, the amount of nitrogen released and absorbed was found to be proportional to the amount added to the mediuim. Especially, in the N-plot, the amount of nitrogen absorbed by the tissue reached more than 90% of the amount supplied to the medium already in early stage. On the contrary, in the amount free plot, the amount of nitrogen released from the tissue was lower than the minimum level in the N-plot. The amount of total N and P in the cultured tissue was found to be influenced by the amount of nitrogen addedin the medium. However, the amount of K in the tissue was not related to the nitrogen level in the medium, but rather it was influenced by the amount of added potassium. These findings present little difference in the metabolic pattern among the three species plants studied, and suggest that the woody leguminous plants have some common features in tehir metabolic pattern.

• 한국환경보건학회지
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• 제42권3호
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• pp.141-146
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• 2016

In South Korea, many cases of humidifier disinfectant-associated lung injury (HDLI) have been reported among people who used humidifier products containing humidifier disinfectant (HD). The objectives of this study are to estimate both airborne HD concentration in the room where HD was used and the amount of humidifier disinfectant absorbed into the respiratory system. Information and data on the HDs were collected using a structured questionnaire and home environmental investigations include the volume of HD (ml) and hours used per day, concentration of disinfectants contained in the HD brand (${\mu}g/ml$), volume of the room ($m^3$), assumed ventilation rate ($m^3/hr$) and breathing rate assumed ($m^3/hr$). We used children aged under five years old as a sample and estimated both airborne HD concentrations and amount of HD absorbed into the respiratory system. The estimated airborne concentration of HD in the room ranged from 68 to $369{\mu}g/m^3$ for PHMG (polyhexamethylene guanidine phosphate) and from 16 to $239{\mu}g/m^3$ for PGH (oligo (2-(2-ethoxy) ethoxyethyl guanidine). The amount of HD absorbed in the respiratory system per day was estimated to range from 227 to $1,225{\mu}g$ for PHMG and from 53 to $794{\mu}g$ for PGH. In conclusion, a great amount of HD was likely absorbed into respiratory system, likely beyond the level of the capacity of the immune system to remove the HD absorbed.

• 한국환경농학회지
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• 제15권4호
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• pp.472-478
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• 1996

도시지역이나 공단지역과 같은 대기오염이 우려되는 지역의 가로수, 공원수, 녹화수로 널리 사용하고 있는 활엽교목류 중에서 내연성이 있다고 보고된 바 있는 가중나무, 능수버들, 양버즘나무, 은단풍나무, 은행나무를 대상으로 가스상 대기오염물질에 대한 흡수${\cdot}$흡착능력을 간편하게 비교할 수 있는 평가 인자를 알아보기 위하여 식물환경조절실에서 $SO_2$, $NO_2$, CO 가스 접촉실험을 실시하였다. 가스소비량은 가중나무가 가장 많았고 양버즘나무가 가장 적었다. 기공확산저항치는 가스소비량과 밀접한 관계를 나타내 간편하게 측정할 수 있는 정화능 지표로서의 사용가능성을 확인할 수 있었다. 그러나, 체내에 흡수축적된 전황 및 수용성황 함량과 기공밀도는 가스소비량과 다른 변화경향을 나타내 수목의 종합적인 대기오염정화능을 지표하지는 못하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.317-318
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• 2023

This study is part of the carbonation degree DB accumulation through quantitative analysis of carbonation depth, Ca(OH)₂ and CO₂ according to the type of finish and years of use of old concrete structures in order to predict the amount of CO₂ that can be absorbed through carbonation of concrete. To this end, the depth of carbonation of the concrete core specimen is measured using an indicator, and the dry amount of water combined with CO₂ in the sample is measured using a differential thermal gravimetric analyzer for samples in the carbonation area and non-carbonated area classified by the indicator, and the absorption compared to the weight of the sample. The amount of absorbed CO₂ was calculated. In addition, the degree of carbonation was calculated through quantitative comparison of Ca(OH)₂ in the carbonation section and non-carbonation section. In the future, we will continue to add the survey and analysis data of dismantled structures and use them as basic data for estimating the amount of carbon dioxide that can be absorbed according to the exposure conditions and years of use by concrete mix.

• Asian-Australasian Journal of Animal Sciences
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• 제11권3호
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• pp.209-216
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• 1998

The paper presented here is aimed at increasing knowledge on purine metabolism in ruminants and hence the quantification of microbial cells entering the small intestine from urinaη excretion of purine derivatives. Nucleic acid metabolisms of micro-organisms in the rumen, digestion and absorption of nucleic acids entering the intestines, metabolisms of absorbed and endogenous purines involving de novo synthesis of nucleic acids in the ruminants host, and the relationship between absorbed and excreted purines are reviewed. Principal concerns about an amount of purine derivatives excreted in urine in relation to a change in purine-N: total-N ratios in rumen microbes that leave the rumen are discussed. The use of urinary excretion of purine derivatives as an indicator of the amount of microbial biomass leaving the rumen has to be done with some caution since it may be impossible to get a representative sample of microbes entering the intestine and thus yield estimates are relative rather than absolute.

• 한국세라믹학회지
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• 제37권3호
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• pp.280-287
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• 2000

Adsorption behavior and amount of phenolic resin followed silica (SiO2) formation onto silicon nitride(Si3N4) surface were investigated using electrokinetic sonic amplitude (ESA) technique and with UV spectrometer, to fabricate Si3N4/SiC nano-composite based on reaction between SiO2 formed and phenolic resin absorbed onto Si3N4 particle. The amount of SiO2 formed and carbon from phenolic resin absorbed onto Si3N4 surface were calculated quantitatively to adjust the reaction between SiO2 and phenolic resin, resulting in no residual SiO2 and carbon. As a result, pre-heated tempeature for optimized reaction was below 25$0^{\circ}C$, in which there was no residual SiO2 and carbon.

• 한국환경과학회지
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• 제11권10호
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• pp.1089-1096
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• 2002

The objectives of this study were to investigate the desulfurization kinetics of paper sludge and limestone in a fluidized bed reactor according to bed temperature and air velocity. The experimental results were presented as follows ; First, the bed temperature had a great influence on the desulfurization efficiency of limestone and paper sludge. In paper sludge, the optimum condition in desulfurization temperature was at 80$0^{\circ}C$ and in limestone, that was at 850 $^{\circ}C$ or 900 $^{\circ}C$ Second, as air velocity increased, the desulfurization efficiency(or the absorbed amount of sulfur dioxide) by limestone and paper sludge decreased. And the absorbed amount of sulfur dioxide by paper sludge was larger than that of by limestone. Third, as the velocity increased and the optimum desulfurization temperature became, ks and the removal efficiency increased. So, ks, kd highly depended on the air velocity and bed temperature.