• Transactions of the Korean Society of Automotive Engineers
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• v.3 no.6
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• pp.274-284
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• 1995

The effect of turbulence and ignition energy on flame kernel growth in mathanol-air mixtures has been studied in a constant volume vessel. Experiments were made under different turbulent intensity conditions, ignition energy and over a range of equivalence ratio. Characteristics of turbulent flow were grasped by measurments of gas pressure and visualization of flame propagation. Flow velocity was measured by use of hot wire anemometer. A comparison of the effect of turbulence on ignition probability and flame kernel volume variation ratio is also presented.

• Journal of Veterinary Clinics
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• v.16 no.2
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• pp.523-528
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• 1999

Subaortic stenosis in a 2.9kg, 3-month-old pug dog and a 11 kg, 4-month-old Rott -weiler dog showing signs of dyspnea, tachypnea, anorexia, exercise intolerance and depression was diagnosed with electrocardiography, thoracic radiography and ultrasonographic evaluation. In electrocardiography, PR interval widening, R wave amplitude increase in lead II in case 2, ST segment depression and left axis deviation in case 1 and 2 were identified. In thoracic radiographs, enlarged left ventricle and atrium, caudal displacement of left crus of diaphragm and caudal part of cranial mediastinum widening were identified in ventrodorsal view. In lateral view, left ventricular enlargement, secondary dorsal deviation of trachea and post-stenotic dilation of aorta were seen. Also, edematous pulmonary changes were shown in peri-hilar area. In ultrasonographic examination, left ventricular dilatation, pericardial effusion and subaortic valvular ridge were seen with real time B-mode in right parasternal long axis view. Aortic valve regurgitation was identified in color-Doppler mode.

• Journal of Veterinary Clinics
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• v.26 no.4
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• pp.362-366
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• 2009

Hypertrophic cardiomyopathy (HCM) is the most often seen type of cardiomyopathy in cats. The cause is unknown but a genetic basis is thought to underlie some cases. Thromboembolism (TE) is a troubling complication in cats with myocardial disease. Two cats referred to Seoul National University Hospital for Animals with the paralysis of bilateral hindlimbs after vomiting. The cats were depressed and the bilateral hindlimbs were cyanotic, cool and painful. Heart murmur sounds were auscultated in both cases. Through radiographic and echocardiographic evaluation, HCM was diagnosed. TE at the distal aortic trifurcation was also visualized on abdominal ultrasonography. Both cats were expired and HCM and saddle thrombus were confirmed by postmortem examination in one cat.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.6
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• pp.501-505
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• 1991

To evaluate the suitability of solid-culm crops for silage, culm characteristics and the variation of solidness in several solid-culm and hollow-culm cultivars of wheat and triticale were examined both in the field and greenhouse. The degree of culm solidness and the voiume of air space in each internodes were measured at heading. The solidness of solid-culm were increased by the development of pith connected with vascular bundles. There was a variation in solidness among the crops tested. The degree of solidness in hollow -culm crops was 14.6% and 15.0% for 'Wonkwang' wheat and 'Shinkihomil' triticale, whereas in solid-culm crops the degree was 77.0-100% for durum wheats, 61. 0-95.8% for bread wheats and 18,7-57,0% for triticales. For 'Golden ball' which had the most solid culms among durum wheats tested higher solidness was observed in the greenhouse than the field, in the high internodes than low ones and in tiller culms than main stems. The solid-culm crops had a smaller air volume in internodes (1.01-2.30ml) than did 'Shinkihomil' (4.85ml) and this characteristics was considered to be advantageous for air removal and lactic fermentation at ensilaging.

• Journal of Veterinary Clinics
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• v.32 no.4
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• pp.343-346
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• 2015

A 4-year-old castrated male Dachshund was presented with a chronic history of dyspnea and cyanosis. Complete blood count revealed marked polycythemia with a hematocrit of 79.7%. Thoracic radiographs showed mild right-sided cardiac enlargement. Echocardiography showed a large ventricular septal defect in the left ventricular outflow tract region just proximal to the aortic valve. On Doppler echocardiography, right-to-left shunt flow through the defect was found and confirmed by contrast echocardiography. Based on these diagnostic findings and clinical signs, the dog was diagnosed as right-to-left shunting ventricular septal defect. Phlebotomy and oxygen supplement were performed, but the dog died the day after presentation.