• 아시안잔디학회지
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• 제22권2호
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• pp.185-196
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• 2008

본 연구는 효모균과 유산균이 함유된 발효 액비가 크리핑벤드그래스 잔디의 지상부 및 지하부의 생육에 미치는 영향을 시험하고자 2007년 8월부터 11월까지 4개월간 수행하였다. 처리구는 비료를 처리하지 않은 무처리구(NF), 복합비료(21-17-17)를 처리한 대조구(CF), 복합비료를 처리한후 미생물발효액비 500배액을 처리한 T500, 300배액을 처리한 T300, 100배액을 처리한 T100, 그리고 복합비료를 처리하지 않고 미생물 발효액비만을 처리한 L500 등 6개 처리를 완전임의배치법으로 수행하였다. 잔디생육조사는 엽색지수와 엽록소함량과 같은 잔디품질과 지상부와 지하부의 생육량, T/R 율 및 뿌리길이의 변화를 조사하였으며, 그 결과를 요약하면 아래와 같다. 1. 염색지수와 엽록소함량 조사결과, T500 T300 T100 $\geq$ CF > L500 > NF 순으로 높게 나타났으며, 가장 효과가 좋은 처리구는 T300로 조사되었다. 2. 잔디 지상부 및 지하부의 생육량 비교결과, 복합비료와 미생물발효액비를 포함한 T500, T300, T100이 복합비료만 처리한 CF보다 지상부는 평균 13% 증가하였으며, 지하부는 T300에서 25% 증가하였다. 복합비료를 처리하지 않고 미생물발효액비만 처리한 L500은 무처리구인 NF보다는 지상부 88%, 지하부 44% 씩 각각 증가하였다. 3. 잔디의 T/R율을 비교한 결과, 복합비료와 미생물발효액비를 처리한 T500, T300, T100이 복합비료만 처리한 CF보다 지상부는 평균 17% 높았고, 미생물발효액비만 시비한 처리구인 L500이 무처리구인 NF보다 약 39% 높게 조사되었다. 4. 뿌리길이 조사결과, 복합비료처리구에서는 1차 2차 조사에서는 CF보다 T500, T300, T100에서 평균 $7{\sim}8%$ 더 높고, 3차 조사에서는 CF와 비슷하게 조사되었고, 복합비료가 시비하지 않은 처리구에서는 NF와 L500 처리구의 뿌리길이를 비교할 때 NF보다 L500에서 약 $22{\sim}66%$ 높게 조사되었다. 본 결과들을 통해 유산균과 효모균이 함유된 발효액비의 시비는 잔디의 뿌리길이, 지하부와 지상부 생육 및 잔디의 T/R 율을 향상시켰고, 잔디의 지상부와 지하부 생육이 가장 좋은 처리구는 T300이었다.

• Fisheries and Aquatic Sciences
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• 제11권1호
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• pp.23-31
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• 2008

An experiment was conducted in twelve 0.02-ha rain-fed earthen ponds for 18 weeks to evaluate the effects of including pangasiid catfish (Pangasius hypophthalmus) in polycultures of major Indian carps, catla (Catla catla), rohu (Labeo rohita), and mrigal (Cirrhinus cirrhosus), on yield and economic gain. Treatment 1 ($T_1$) consisted of 5,000 catla+2,500 rohu+2,500 mrigal per ha, treatment 2 ($T_2$) consisted of 5,000 catla+2,500 rohu+2,500 mrigal+2,500 pangasiid catfish per ha, treatment 3 ($T_3$) consisted of 5,000 catla+2,500 rohu+2,500 mrigal+5,000 pangasiid catfish per ha, and treatment 4 ($T_4$) consisted of 5,000 catla+2,500 rohu+2,500 mrigal+7,500 pangasiid catfish per ha. The growth performance of fishes was evaluated by calculating specific growth rate, daily weight gain, and percent weight gain. Inclusion of pangasiid catfish in the carp polyculture resulted in significant increases in the growth and yield of catla and rohu. Catla and rohu grew most in $T_4$, with 7,500/ha of pangasiid catfish. The presence of pangasiid catfish did not influence the growth of mrigal. The growth of pangasiid catfish varied with stocking density, and they grew best at 5,000/ha ($T_3$). The carp and the combined fish yields were significantly higher in the carp polycultures with pangasiid catfish than with carps alone. The total carp and the combined fish yields were highest in $T_4$, in which the density of pangasiid catfish was greatest. However, the total carp and the combined fish yields in $T_3$ and $T_4$ were not significantly different. Profit differed significantly among treatments. Economic gain was highest in $T_3$, with 5,000/ha of pangasiid catfish, and lowest in $T_1$. The inclusion of pangasiid catfish in major carp polycultures results in higher fish yields and greater economic gain.

• 한국가금학회지
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• 제17권2호
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• pp.79-82
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• 1990

유추의 산소소비에 기인하는 $T_3$와 $T_4$의 생물학적 효력을 비교하는 일연의 실험을 실시했다. 3마리씩 5구로 나누어 와 $T_3$와 $T_4$를 체중 1kg당 500혹은 1,000mg씩을, 대조구에는 동양의 생리 식염수만을 각각 투여한 뒤, 호흡 시험장치를 이용한 산소소비량을 측정하였다. 산소소비량은 2시간 후의 $T_4$-500mg구를 제외하고는 대조구에 비해 갑상선 호르몬 처리구가 통계적으로 유의하게 증가했다. 이 실험의 결과로 얻어진 등식으로부터, $T_3$는 $T_4$에 비해 산소소비량의 증가에 대한 생물학적 활성이 2~3배 정도임을 알 수 있다.

• 한국임상수의학회지
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• 제16권2호
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• pp.332-338
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• 1999

This study was carried out to investigate weight gain and prevention of diarrhea in suckling calves which were injected with recombinant bovine somatopropin (rBST). A total of 101 breeding cows were assigned to the six groups according to the administered dosage and injected time, respectively. Groups T-1, T-3, T-4 and T-6 were injected starting 1 week before calving and groups T-2 and T-5 were injected on the calving day. The six groups were injected five times at two week intervals. Groups T-1 and T-2 were injected with 250mg composite rBST, Group T-3 was injected with 375 mg composite rBST. Groups T-4 and T-5 were injected with 500mg composite rBST, And group T-6 was injected with 500mg rBST-S. The control group was not injected with BST. The groups injected with 500 mg BrST had a lower rate of morbidity from diarrhea than the control group or the groups injected with 250 mg rBST (T-1 and T-2). Weight gain was higher in group T-4 than in the control group or groups T-1 and T-2. In Korean Native Cattle, the total weight gain was greater in group T-4 than in the control group (p<0.05). In crossbred cows, total weight gain was the highest in group T-4, and the total weight gain rate was greater than in group T-4 and the control group (p<0.05). The results of the hematological values showed that injections of rBST did not affect the level of the RBC, TP and BUN in the breeding cows at 9 weeks after postpartum or the neonatal calves. The results of this study indicate that injecting breeding cows with 500 mg rBST before calving would be effective in the preventing of diarrhea and in increasing weight gain of calves from birth to weaning.

• Metals and materials international
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• 제24권6호
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• pp.1432-1437
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• 2018

This work investigated edge-cracking behavior of equiatomic CoCrFeMnNi high-entropy alloy during hot rolling at rolling temperatures $500{\leq}T_R{\leq}1000^{\circ}C$. Edge cracks did not form in the material rolled at $500^{\circ}C$, but widened and deepened into the inside of plate as $T_R$ increased from $500^{\circ}C$. Edge cracks were most severe in the material rolled at $1000^{\circ}C$. Mn-Cr-O type non-metallic inclusion and oxidation were identified as major factors that caused edge cracking. The inclusions near edge region acted as preferential sites for crack formation. Connection between inclusion cracks and surface cracks induced edge cracking. Rolling at $T_R{\geq}600^{\circ}C$ generated distinct inclusion cracks whereas they were not serious at $T_R=500^{\circ}C$, so noticeable edge cracks formed at $T_R{\geq}600^{\circ}C$. At $T_R=1000^{\circ}C$, significant oxidation occurred at the crack surface. This accelerated edge crack penetration by embrittling the crack tip, so severe edge cracking occurred at $T_R=1000^{\circ}C$.

• 한국가금학회:학술대회논문집
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• 한국가금학회 2005년도 제22차 정기총회 및 학술발표회
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• pp.72-73
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• 2005

육계사료 내 생리활성 추출물의 첨가 급여가 육계의 성장능력과 혈청 및 고기의 콜레스테롤 함량, 지질산화에 미치는 영향을 조사하였다. 대조구는 무항생제 사료(C)를 급여하였고, 처리구는 대조구 사료에 잣송이 추출물 500ppm(T1), illite 1%에 추출물 500ppm(T2), 잣송이 2.5%(T3)를 첨가하여 5주간 급여하였다. 증체량과 사료섭취량은 대조구에 비해 처리구가 증가하는 경향을 보였다. 혈청의 콜레스테롤 함량은 추출물 첨가구인 T1, T2 처리구에서 유의적으로 감소하였다. 가슴살 역시 추출물 첨가구인 T1, T2 처리구가 유의적인 차이를 보였다. 다리살은 유의적인 차이를 보이지 않았지만, 추출물 첨가구인 T1, T2 처리구가 콜레스테롤 함량이 감소하는 경향을 보였다. TBARS값은 가슴살과 다리살에서 추출물 첨가구가 낮은 경향을 보였다. POV값은 유의적인 차이는 보였지만, 처리간의 일정한 경향을 보이지 않았다.

• 한국통신학회논문지
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• 제36권10B호
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• pp.1150-1158
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• 2011

UBcN에서는 한 가입자가 UDTV나 3DTV와 같은 광대역 신호를 동시에 다수의 채널로 수신할 수 있게 하기 위하여 100 Mbps를 초과하는 전송률을 요구하고 있다. 최근에 FTTH를 위한 매체로서 댁내 일부에 광케이블을 사용하기 시작했지만, UTP는 여전히 가장 많이 사용되는 매체이고 UBcN 시대에도 널리 사용될 것이다. UBcN을 위해 광케이블이 포설되지 않은 곳에 UTP를 적용해야 한다면 현재로서는 1000BASE-T나 Vectorized VDSL2를 고려할 수 있다. 그러나 대부분의 가입자 댁내에는 2조 이하의 UTP가 포설되어 있으므로 4조의 UTP를 사용해야 하는 1000BASE-T나 3조의 UTP를 사용하는 Vectorized VDSL2를 적용하기 위해서는 추가적으로 UTP를 증설해야 한다. 이러한 문제를 해결하기 위하여 본 논문에서는 2조 UTP를 통하여 500 Mbps를 제공하는 500BASE-T 기술을 제안한다. 이 기술의 특징은 현존하는 1000BASE-T의 규격에서 PCS 상부에 속도 정합을 위한 부계층과 PCS 하부에 SERDES 부계층을 추가하여 구현된다. 속도 정합계층은 기존의 GMII와 호환이 되도록 하기 위한 것이다. 그리고 SERDES 부계층을 약간 수정하면 500 Mbps의 2조의 UTP를 250 Mbps의 1조 UTP로 용이하게 변경하여 사용할 수 있다. 이러한 기능들을 FPGA와 아날로그 보드를 이용하여 구현하였으며, 실험을 통하여 속도정합, 심벌벡터 동기, 전송률 등을 검증한다. 특히, 속도정함 부계층에서 enable 제어를 통하여 링크 효율을 증가함을 보여준다.

• Asian-Australasian Journal of Animal Sciences
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• 제17권2호
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• pp.259-262
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• 2004

The ability of Modified Glucomannan (MG) to bind T-2 toxin (T-2) in the gastrointestinal tract has been tested in vivo by feeding 120 five-wk-old broiler chicken with the following six treatment diets, 1) Control diet; 2) Control+MG (0.1%); 3) Control+T-2 (500 ppb); 4) Control+T-2 (500 ppb)+MG (0.1%); 5) Control+T-2 (1,000 ppb) and 6) Control+T-2 (1,000 ppb)+MG (0.1%). Twenty birds were assigned to each treatment group, which had five experimental groups. Four birds of each experimental group were sacrificed at an interval of 30 min i.e. at 0, 30, 60, 90 and 120 min after feeding experimental diets. The whole gut contents of each bird were collected, dried and toxin concentration was determined. Percent T-2 recovered from the gut was significantly lower (p<0.05) in the groups fed MG at all the time intervals. The percent T-2 adsorbed by the MG at different T-2 levels (500 and 1,000 ppb) was 15.97 and 14.77, 22.53 and 22.67, 26.88 and 28.03, and 31.50 and 31.83 at 30, 60, 90 and 120 min, respectively.

• 동의생리병리학회지
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• 제20권6호
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• pp.1576-1583
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• 2006

In order to investigate the effect of Goamshimshinhwan(GASSW) on SD rats with deteriorated immunity caused by methotrexate. Methotrexate was fed to the SD rats once a day for 4 days. After the immune responses of the at a dosage 1,000, 500 and 250mg/kg/10ml. and the changes on body weight and gains, spleen weight, total blood leukocyte numbers, total lymphocyte numbers, the percentage of B-cell, T-cell, CD3+CD+4 T-cell, CD3+CD8+ T-cell and CD4+/CD8+ T-cell ratios in the bolld and spleen were observed. In addition, the serum IL-2 levels and productivity of IL-2 of splenic cells were also demonstrated in this study. The changes on body weight were increased significantly in 100 and 500mg/kg of GASSW groups and the changes on body gain were increased significantly in 1000mg/kg of GASSW groups as compared with control group. The changes on the spleen weight (absolutely or relatively) were increased significantly in all GASSW groups as compared with control group. The total blood leukocyte numbers were increased significantly in 1000 and 500mg/kg of GASSW groups as compared with control group. The total lymphocyte numbers were increased significantly in all GASSW groups in the blood and increased significantly in 1000 and 500mg/kg of GASSW goups in spleen as compared with control group. The percentage of B-cell and T-cell were increased significantly in 1000mg/kg of GASSW groups in the blood and increased significantly in 1000 and 500mg/kg of GASSW groups in spleen as compared with control group. The percentage of CD3+CD4+ T-cell and the serum IL-2 levels and productivity of IL-2 of splenic cells were increased significantly in 100 and 500 mg/kg of GASSW groups in the blood and spleen as compared with control group. The percentage of CD3+CD8+ T-cell were increased significantly in 1000mg/kg of GASSW groups only in spleen as compared with control groups. The CD4+/CD8+ T-cell ratios were increased significantly in 1000 and 500mg/kg of GASSW groups only in the blood as compared with control group. Goamshimshinhwan(GASSW) has immuno-stimulating effect on SD rats with deteriorated immunity caused by methotrexate.

• 마이크로전자및패키징학회지
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• 제25권4호
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• pp.67-74
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• 2018

두께가 $20{\mu}m$이며, 직경이 각기 $100{\mu}m$, $300{\mu}m$, $500{\mu}m$인 p형 $Sb_2Te_3$와 n형 $Bi_2Te_3$ 박막레그들을 전기도금하여 열전박막모듈을 형성한 후, 박막레그의 직경에 따른 출력전압과 출력전력을 비교하였다. $100{\mu}m$ 직경 박막레그들로 구성된 모듈은 ${\Delta}T=36.7K$에서 365 mV, $300{\mu}m$ 직경 박막레그들로 형성한 모듈은 ${\Delta}T=37.5K$에서 142 mV, $500{\mu}m$ 직경 박막레그들로 제작한 모듈은 ${\Delta}T=36.1K$에서 53 mV의 open circuit 전압을 나타내었다. $100{\mu}m$ 직경 박막레그 모듈은 ${\Delta}T=36.7K$에서 $845{\mu}W$, $300{\mu}m$ 직경 박막레그 모듈은 ${\Delta}T=37.5K$에서 $631{\mu}W$, $500{\mu}m$ 직경 박막레그 모듈은 ${\Delta}T=36.1K$에서 $276{\mu}W$의 최대출력전력을 나타내었다.