• Journal of the Speleological Society of Korea
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• no.81
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• pp.7-19
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• 2007

본 논문은 초음파센서와 적외선센서를 이용하여 그 신호를 받아 주 모터를 제어한 것으로, 센서를 이용한 선풍기의 풍향 및 풍속을 제어하였다. 풍향제어는 인체감지센서와 ATmega128, DC모터를 사용하였고, 기본적으로 WmAVR과 PonyProg를 사용하여 소스코딩 및 다운로딩을 하였으며, 모터 구동드라이버는 모터제어에 범용으로 쓰이는 L298 칩을 사용하였다. 풍속제어는 초음파센서와 ATmeBa16, DC모터를 사용하여 제작하였고, 풍향제어부와 마찬가지로 WinAVR과 PonyProg 및 L298 칩을 사용하여 소스코딩 및 다운로딩을 하였다. 풍향제어는 물체가 정면에 위치하면 회전을 멈추고, 좌우로 $100^{\circ}$ 반경이내에서 거리 1m내외의 물체를 감지하도록 설계하였다. 풍속제어는 물체까지의 거리를 최소 3cm 최대 3m 이내에서 물체를 감지하여 모터의 속도를 제어할 수 있도록 하였고, 모터속도는 DC모터를 PWM 방식으로 제어하여 속도를 조절하였다.

• Korean Journal of Veterinary Research
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• v.38 no.1
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• pp.217-225
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• 1998

영국 Hertfordshire의 두지역에서 사육되고 있는 건강한 조랑말의 결막낭내 상존하고 있는 진균총의 분포도를 조사 비교하고자 36두 조랑말의 양안(총72안)의 상 하 결막낭에서 시료를 채취하여 진균을 분리 동정하였다. 총 76.4%의 안구에서 진균이 발견되었으며, 13종이 분리되었다. 전체적으로 가장 많이 분리된 진균은 Aspergillus spp(27.8%), Nocardia spp(25.0%), Cladosporium spp(19.4%), Penicillium spp(9.7%) 및 Penicillium spp(9.7%)순이었다. 1지역에서는 Nocardia spp와 Cladosporium spp가 가장 많이 분리된 반면, 2지역에서는 Aspergillus spp가 가장 많이 분리되었다. 상 하결막낭내 진균분리율의 차이는 상결막낭에서보다는 하결막낭내에서 진균이 유의성 있게 많이 분리되었다(p<0.05). 시료채취시에 사용된 swab의 상태에 따른 비교에서 건조된 swab과 젖은 swab간에는 통계적 유의성이 없었다.

• Animal cells and systems
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• v.7 no.2
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• pp.119-122
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• 2003

In order to determine whether foals of move dominant mothers were harassed less by mares than those of lower-ranked mothers, harassment of foals was studied in a herd of Jeju ponies (Equus caballus) consisting of 73 mares, their 53 foals, and one stallion. Mares Harassed the foals on 71 occasions between March to September,1998. The frequency of harassment tended to decrease as foals aged, but the relationship was not significant (P = 0.079). Foals were harassed when sleeping (n = 14), grazing (n = 19), moving (n = 8), approaching a mare in the vicinity (n = 13), or play-fighting with the foal of the harassing mare (n = 17). Mares harassed foals of younger, more subordinate mares than those of older, more dominant mares (P < 0.001). We conclude that early social experience of foals is associated with the dominance rank of its mother.

• Journal of the korean veterinary medical association
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• v.51 no.7
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• pp.411-414
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• 2015

• Journal of the korean veterinary medical association
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• v.51 no.5
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• pp.287-289
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• 2015

• Journal of the korean veterinary medical association
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• v.51 no.6
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• pp.349-351
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• 2015

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.96.3-97
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• 2000

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.42.1-42
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• 1999

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.42.2-42
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• 1999

No Abstract, See Full Text

• Journal of Veterinary Clinics
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• v.11 no.1
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• pp.347-358
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• 1994

This study was peformed to investigate the morbidity of nutritional secondary hyperparathyroidism(NSH) caused by imbalance of Ca and p, and related athletic disease in Cheju pony racehorse. The seventeen horses with clinical signs among 33 NSH affected, administered CaCO$_3$(34 g) and Vita-rinka1(120 g) respectively for 40 days. The results were asd follows; Morbidity of NSR was 33 among 47 horses, and it was caused by the deficiency of Ca in 32 horses. In a case, level of Ca was norm질 although P was high. There was no case of Ca deficiency with P excess. Among 33 NSH affected horses, 13 were subclinical and 20 were clinical types with severe lameness in 6 and transient lameness in 14. Although there was no difference in bone density between transient lameness and normal horses on radiography, among six horses wlth severe lameness two showed hyperplasia at periosteum, one had low density of phalanges and metacarpal bones, and thin cortex. and there with fracture at carpus, nivicular bone and proximal sesamoids. The levels of FECa and FEP were recovered after CaCO$_3$ administration in 2 horses among ten, and after Vita-rinkal in all of seven. The clinical signs were disappeared in slx horses among ten CaCO$_3$ treated, and in five among seven Vita-rinkal treated. There were no differences on radiography in bone density and thickness of cortex on 14 horses with transient lameness. Three horses with severe signs were recovered to normal bone density and thickness of cortex, and there was no significant difference between two groups. In summary, the morbidity of NSH in Cheju pony racehorses was relatively high because of deficiency of Ca. Constant admistration of Ca supplements is desirable to treat and prevent athletic disease development in Cheju racehorses.