• 한국환경과학회지
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• 제19권3호
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• pp.323-329
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• 2010

To acquire preliminary data for the control of total nitrogen (TN) in S sewage treatment plant, which processes merging food waste and sewage, the effect of reject water on the total nitrogen in the effluent was examined in this study. Water quality data for the plant during the winter period were applied to calculate the mass balance. It was calculated that at least more than 231 kg/d TN should be removed to control the TN concentration in the effluent. Assuming 18 ppm as the goal TN concentration in the effluent, about 941 kg/d TN should be removed from this plant. Approximately 10% more TN should be removed than at present to achieve this result. It was observed that dewatering the filtrate had a considerably greater effect on the total nitrogen in the effluent than the reject waters. The dewatered filtrate contained 1,399kg/d TN. The contribution of the dewatered filtrate to the TN concentration in the effluent was 0.183, which was 7 to 23 times greater than the other reject waters. In addition, the amount of total nitrogen from the reject water, with the exception of the dewatering filtrate, was lower than the amount of TN that should be removed from S sewage treatment plant. Therefore, it was concluded that one of the most effective methods for controlling the TN concentration in effluent was the removal of the TN contained in the dewatering filtrate.

• 한국광학회지
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• 제9권5호
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• pp.348-352
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• 1998

Berreman에 의해 제시된 액정 유체 방정식을 이용하여 쌍안정 TN 액정 셀의 여러 가지 파라미터 광 스위칭특성에 미치는 효과를 시뮬레이션을 통하여 연구하였다. 이로부터 쌍안정 TN LCD의 rising time과 delay time을 줄이는 액정 물질 및 셀 제작조건을 제시하였다. 고속응답을 위한 탄성계수는 K11은 크고 K22, K33 는 작은 것이 유리하고, 유전율 이방성, 회전 점성계수, 두께, 프리틸트 각, d/p등은 모두 작은 것이 유리하다. 특히 d/p는 고속응답 뿐만 아니라 0$^{\circ}$스위칭에 필요한 selection 펄스의 폭에 가장 많은 영향을 주는 중요한 파라미터이다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.756-758
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• 2006

Although LCD market has been divided so far into high-end market with S-IPS & SPVA and low-en market with TN mode, TN MNT has been striving towards bigger share in large and high-resolution wide display market as well. LG.Philips LCD has developed 20.1 inch and 22.0 inch WSXGA+ wide monitor mainly focusing on the low cost based on high brightness, fast R/T, high color gamut and wide viewing angle.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.294-296
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• 2005

We developed new WV-TN panel which has 170/170 viewing angle and 8ms response time. This viewing characteristics almost catch up with those of VA. To extend the viewing angle we optimized the cell design and LC parameters. This new technology strongly increase the demand of TN monitors especially for the monitor market larger than 19"

• Asian-Australasian Journal of Animal Sciences
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• 제8권3호
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• pp.241-247
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• 1995

The aim of the present study was to investigate the effect of internal parasites on growth rates of Thai Native (TN) and crossbred (75% TN $\times$ 25% Anglo-Nubian, AN and 50% TN $\times$ 50% AN) goats (undrenched, drenched every 3 weeks or at 9 weeks) in village environments in southern Thailand in a humid tropical climate. There was no significant (p > 0.05) difference in growth rate ($g/kg^{0.75}/d$) between the genotypes during unsupplemented grazing (0-64 days of the experimental period). However, during supplementary feeding (64-127 days) and throughout the period (0-127 days) TN goats had significantly (p < 0.01) lower growth rates compared with 75% TN $\times$ 25% AN and 50% TN $\times$ 50% AN goats. There was no (p > 0.05) significant difference in growth rates between 75% TN $\times$ 25% AN and 50% TN $\times$ 50 % AN goats. The growth rates of goats drenched every 3 weeks were significantly (p < 0.01) higher than those undrenched or drenched at 9 weeks. The results of this study also indicate that drenching alone did not result in increased weight gain except when the nutritional status was also improved. Parasitic infection affected some blood constituents, such as pack cell volume, haemoglobin, total protein and albumin. This resulted in lower growth rates for control groups and goats drenched at 9 weeks compared to those of goats drenched every 3 weeks.

• Asian-Australasian Journal of Animal Sciences
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• 제7권4호
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• pp.563-570
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• 1994

Fifty-one Thai Native (TN) and Anglo-Nubian (AN) $\times$ TN does were studied. The purpose of the study was to investigate the reproductive performances of different goat genotypes grazing improved pasture with or without supplementary feeding. The feeding regimes were: 1. no concentrate supplement (T1), 2. supplemented for 15 days before mating and 45 days during mating period (T2), 3. supplemented from 15 days before mating to 42 days after kidding (T3) and 4. supplemented for 30 days before kidding, followed by 42 days after kidding. Cross-bred does tended to have higher conception rates, kidding opportunities and higher multiple birth rates than TN does. However, these differences were not statistically significant (p>0.05), and concentrate supplementation under the various regimes did not increase reproductive performance. TN kids had significantly (p<0.01) lower birth weights and lower weights at 3, 6 and 12 weeks of age than those of the cross-bred kids. However, there was no significant difference between the genotypes in growth rate (g/d or $g/kg^{75}/d$) of kids during these periods. Supplementary feeding did not significantly affect either kid birth weight or weight gain in the first 6 weeks after birth and during this period supplementary adequate in both quantity and quality, substantial reproductive performances were achieved from both TN and AN $\times$ TN does without concentrate supplementation.

• Asian-Australasian Journal of Animal Sciences
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• 제7권4호
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• pp.555-561
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• 1994

This paper presents results from a study of the body composition and sensory characteristics of female weaner goat meat. A completely randomized $3{\times}3{\times}2$ factorial design was used. Factors were genotype (Thai native; TN, 75% TN $\times$ 25% Anglo-Nubian; AN and 50% TN $\times$ 50% AN), feeding {grazing only, low (1.0% BW/d) and high (1.5% BW/d) concentrate supplementation and parasite control (undrenched and drenched)}. It was shown that there was no effect of genotype on body components and dressing percentage. However, TN and 75% TN $\times$ 25% AN kids had significantly (p<0.05) higher muscle to bone ratios (4.20% and 4.20%, respectively) compared with 50% TN $\times$ 50% AN kids (3.88%). Kids on grazing only had significantly (p<0.01) higher muscle percentage (64.12%) than did kids in low (61.30%) and high (60.62%) supplementary feeding program, but there was no significant (p>0.05) difference between low and high supplementary feeding groups. Kids offered supplementary feeding had significantly (p<0.01) higher percentages of total fat, intermuscular fat, pelvic fat and kidney fat than those of grazing only. Kids offered supplementary feeding had significantly (p<0.05) higher muscle to bone ratios and significantly (p<0.01) higher muscle plus fat to bone ratios compared with those of grazing only. This may be due to significantly lower (p<0.01) bone contents (14.95, 14.17 and 16.8% for kids offered low and high supplementary feeding and grazing only, respectively. There was no significant difference in sensory characteristics of goat meat between genotypes or feeding groups.

• 한국미생물·생명공학회지
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• 제31권1호
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• pp.25-31
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• 2003

아닐린을 분해할 수 있는 Deiftia acidovoran 51-A가 기존에 분리되어 아닐린 분해능이 우수함이 보고되었다. 이 균주로부터 아닐린 분해관련 유전자를 선발하기 위하여 Tn5-B20삽입 변이체들을 유도하여 영양요구형이 아니면서 아닐린을 분해할 수 없는 변이균주 D. acidovorans 10-4-2 균주를 선발하였다. Southern hybridization 결과 이 변이균주에는 Tn5-B20이 한 copy만 삽입된 것으로 나타났다 이 변이균주의 Tn5-B20삽입의 인접 유전자들을 분리하여 염기서열을 분석한 결과 아닐린 분해의 첫 단계에 해당하는 아닐린의 catechol로의 산화적 deamination에 관련되어 있는 것으로 추정하는 tdnQ, tdnT tdnAl 유전자들이 동정되었고 Tn5-B2O은 tdnAl의 바로 밑에 삽입된 것을 알 수 있었다. TdnA2 및 downstream의 유전자 기능을 상실하여 아닐린을 catechol로 전환하는 과정에 변이가 발생하고 따라서 아닐린을 탄소원으로 이용하지 못하는 표현형을 가지게 된 것으로 결론지을 수 있었다. Tn5-B20 의 일부 DNA 조각을 probe로 Southern hybridization 결과 transposon 삽입이 대형의 플라스미드에 삽입된 것으로 나타나 tdn 유전자들이 pTDN51이라고 명명한 100-kb 이상의 대형 플라스미드에 위치함을 알 수 있었다. 이상의 결과는 D. acidovorans 51-A의 pTDN51상의 tdn유전자들이 아닐린의 분해에 관여함을 보여준다.

• Asian-Australasian Journal of Animal Sciences
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• 제7권4호
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• pp.547-554
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• 1994

This paper presents the effects of supplementary feeding and internal parasites on the growth rates of female weaner goats raised under improved management. A completely randomized $3{\times}3{\times}2$ factorial design was used. Factors were genotype (Thai native: TN, 75% TN $\times$ 25% Anglo-Nubian: An and 50% TN $\times$ 50% AN), feeding grazing only, low (1.0% BW/d) and high (1.5% BW/d) supplementation and parasite control (undrenched and drenched). It was shown that native goats had significantly (p<0.05) higher growth rates than did the cross-bred goats from 12-24 weeks of the trial. The growth rate of goats grazing improved pasture depended on the amount of concentrate offered as a supplement. There was no significant difference in growth rates between undrenched and drenched goats. There was no interaction effect on growth rates between the treatments. Drenched goats had significantly (p<0.01) lower egg counts per gram of gastro-intestinal nematode than did undrenched goats. There was no significant difference between the treatments for blood constituents (total protein, haemoglobin, packed cell volume, eosinophils, lymphocytes, monocytes and basophils).

• 한국광학회지
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• 제9권2호
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• pp.117-122
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• 1998

쌍안정 TN LCD의 스위칭 특성을 Berreman에 의해 제시된 backflow를 고려한 이론적 모델을 적용하여 해석하였다. 그리고 이 모델을 적용하여 $180^{\circ}$ 쌍안정 TN 액정셀이 쌍안정 특성을 갖기 위해서는 두 유리기판을 서로 반대 방향으로 러빙해야 하고 d/p도 중요한 요소임을 확인하였다.