• Applied Chemistry for Engineering
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• v.20 no.5
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• pp.542-546
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• 2009

Methane production using the mixed organic wastes of peel-type fruit wastes from apple or orange and sewage sludge was investigated in the batch anaerobic degradation process. When apple or orange peels with sewage sludge were used as mixed substrates, higher methane production was achieved under the condition of 3 : 7 (fruit peel : sewage sludge) mixing ratio. However, above the 3 : 7 mixing ratio, the pH of mixture was decreased from 8.0 to 4.5~4.7 due to organic acid production from the fruit wastes. Subsequently, methane production was low. The results in this study could be effectively applied to the methane gas production system as a bioenergy in the mixed batch anaerobic digestion process using the peel-type fruit wastes and sewage sludge.

• Korean journal of applied entomology
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• v.50 no.3
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• pp.235-245
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• 2011

Temperature-related parameters of Panonychus citri (McGregor) (Acarina: Tetranychidae) development were estimated and a stage-structured matrix model was developed. The lower threshold temperatures were estimated as $8.4^{\circ}C$ for eggs, $9.9^{\circ}C$ for larvae, $9.2^{\circ}C$ for protonymphs, and $10.9^{\circ}C$ for deutonymphs. Thermal constants were 113.6, 29.1, 29.8, and 33.4 degree days for eggs, larvae, protonymphs, and deutonymphs, respectively. Non-linear development models were established for each stage of P. citri. In addition, temperature-dependent total fecundity, age-specific oviposition rate, and age-specific survival rate models were developed for the construction of an oviposition model. P. citri age was categorized into five stages to construct a matrix model: eggs, larvae, protonymphs, deutonymphs and adults. For the elements in the projection matrix, transition probabilities from an age class to the next age class or the probabilities of remaining in an age class were obtained from development rate function of each stage (age classes). Also, the fecundity coefficients of adult population were expressed as the products of adult longevity completion rate (1/longevity) by temperature-dependent total fecundity. To evaluate the predictability of the matrix model, model outputs were compared with actual field data in a cool early season and hot mid to late season in 2004. The model outputs closely matched the actual field patterns within 30 d after the model was run in both the early and mid to late seasons. Therefore, the developed matrix model can be used to estimate the population density of P. citri for a period of 30 d in citrus orchards.

• Journal of the Korean Society of Food Science and Nutrition
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• v.21 no.2
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• pp.136-142
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• 1992

The crude bioflavonoids were obtained by methanol and butanol extraction from Iyophilized orange (Citrus sinensis) peel. And then, its yield was about 0.26% in dry base. Two bioflavonoids were purified by gel filtration and HPLC, and could be identified narirutin and hesperidin through TLC, HPLC, UV spertrum and NMR analysis. The yields of narirutin and hesperidin from a gram of crude bioflavonoids were 42mg and 530mg respectively, and the main fraction of bioflavonoid from orange peel was supposed to be hesperidin. Each component was intravenously injected into Sprague-Dawley rats (1mg/100g body weight) and hesperidin was found to lower their blood pressure significantly (p < 0.001).

• Air Cleaning Technology
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• v.22 no.3
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• pp.32-35
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• 2009

• 건강소식
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• v.24 no.12 s.265
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• pp.32-33
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• 2000

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.05a
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• pp.42-42
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• 2002

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.35-36
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• 2015

본 논문에서는 XNA Framework 기반의 모바일 게임 Tangerine Fairy를 설계하고 구현한다. 이 모바일 게임은 5 단계로 구성되어 있으며 각 단계별로 귤 요정(Tangerine fairy)이 떨어지는 장애물을 피하며 전진한다. 이때 귤 요정이 장애물을 피하지 못하면 캐릭터의 HP(Hit Point)는 감소한다. 그리고 일정시간 지나면 해당 스테이지에서 보스가 등장하고, 게임의 난이도가 증가한다. 스테이지에서 게임 중 클리어 보상을 얻는 경우, 클리어 보상은 보물을 가지고 있기 때문에 다음 스테이지로 이동할 수 있다.

• Journal of Korea Society of Industrial Information Systems
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• v.5 no.3
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• pp.65-70
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• 2000

In general, the quality of agricultural products is determined by direct measurement of a weight or a magnitude, and it is determined by indirect or non-destructive method. In this paper, using color image processing, the algorithm to determine its quality and grading is presented. And the algorithm is applied to real-time citrus classifier. In the system, the size and color of orange are measured by not the sight of human but the digital image processing. The citrus classification system has the real-time maximum classification capacity of six quantify per one second. The system can be applied to controller design for the quality classification of agricultural products.

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.209.2-209.2
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• 2003

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.05a
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• pp.164-164
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• 2002