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정목근 대진대학교 1996 大眞論叢 Vol.4 No.-
We simulate the field response of pulsed mode diffraction-limited beam combined with receive dynamic focusing in linear array transducer. The results show that diffraction limited beam is applicable in tissue characterization in terms of lateral resolution and on axis intensity within depth of field in ultrasound imaging.
정목근,백경갑,이환철 대진대학교 신과학연구소 1998 신과학연구 Vol.1 No.-
본 논문은 킬리안 영상촬영기를 자체 제작하여 킬리안 영상촬영에 영향을 미치는 요인을 관찰하기 위하여 여러 가지 시료의 킬리안영상을 얻었다. 실험결과를 분석해 본 결과 킬리안 영상촬영시 전압의 크기,노출시간,시료의 재질 구성,절연특성 등이 킬리안영상의 색깔과 방전 파형에 영향을 미침을 알 수 있었다.
정목근 대진대학교 1997 大眞論叢 Vol.5 No.-
This paper is represented the limitation of maximum lateral resolution in ultrasonic imaging system. In ideal case where the aperture is infinite, the maximum lateral resolution is limited by center frequency of ultrasound and width of the first null of mainlobe is about λ.
7두의 개에서 배설성 요로조영술을 통한 신장 기능 평가
최윤정,이기자,최형준,이용진,박성준,송근호,정성목,최호정,이영원 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-
Excretory urography is a type of contrast study used to verify and localize upper urinary tract disease. It is an inexpensive and easy way to visualize of anatomic and functional status of the kidney and has been used as a primary imaging modality for the evaluation of urinary tract abnormalities. We describe urological signs of 7 dogs who examined with excretory urography and ultrasonography. Six cases were referred to veterinary medical teaching hospital. Chungnam national university (VMTH, CNU) to evaluate renal function after the treatment for renal failure and one case was referred showing hematuria. In case 1, 2 and 4, blood test and urinalysis was normal and the results of excretory urography presented that renal function were normal range. In case 3, the results of urinalysis, ultrasonography, and excretory urography except blood test presented abnormal kidney and hydronephrosis was diagnosed. In case 5 and 6, blood test, urinalysis, ultrasonography and excretory urography indicated renal failure. In case 7, blood test, urinalysis and ultrasonography presented partially abnormal signs, however, the results of excretory urography was normal range.
물을 전기분해하여 제조한 수소/산소 혼합가스의 특성에 관한 연구
이환철,정목근 대진대학교 신과학연구소 1998 신과학연구 Vol.1 No.-
물을 전기분해하여 제조한 수소/산소 혼합가스의 응폭특성과 연소특성에 관해 연구하였다. 자동차용 점화코일을 이용한 고압방전장치를 제작하였으며, 이를 이용하여 응폭실험을 행한 결과에 따르면 강력한 외부로의 폭발이 있고난 후 진공이 형성되면서 응폭현상이 일어남을 확인할 수 있었다. 그러나 응폭특성이 수소/산소 혼합가스만의 유일한 특성인가에 대해서는 현재 결론을 내리기에는 어려운 실정이다. 또한 텅스텐금속의 연소실험결과에 따르면 수소/산소 혼합가스나 산소-LPG가스 모두 텅스텐금속을 연소시킬 수 있으므로,실제로는 대기중의 산소와 텅스텐금속이 산화반응을 일으켜 텅스텐산화물이 형성됨에 따라 녹는점이 1400-1600℃로 낮아진 결과로 판단되지만 보다 정확한 결론을 내리기 위해서는 좀 더 많은 연구가 필요하다고 판단된다.
박희서,손화영,정성목,송근호,조종기,이영원,신상태,김명철,김덕환,박성준 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
An eleven year old castrated male Maltese was presented to the Veterinary Medical Teaching Hospital of Chungnam National University. In physical examination, approximately 0.5 cm round mass was observed on tail base. This small elevated mass has also shown alopecic and firm configuration. It was differentially diagnosed as sebaceous adenoma and hyperplasia by fine needle aspiration. After surgical removal, the sample was diagnosed as sebaceous hyperplasia by histopathological examination. It has not yet shown any signs of recurrence and prognosis has teen good.
안동기,조개영,정목근 대진대학교 첨단소재연구소 2002 첨단소재연구소논문집 Vol.5 No.-
Ultrasound elastography has drawn a lot of attention because it enables one to image the stiffness of soft tissue whose quantification can lead to differentiation of benign and malignant tissues. To start the research of elastography, we fabricated stiffness phantoms using gelatin and agar, and measured the stiffness of each phantom. Measured stiffness value is about tens kPa. and is dependent on the density of agar and gelatin, and n-propanol. We confirmed that agar-gelatin phantom is good for mimicking elasticity of biological tissue.
전민경,윤기영,최호정,정성목,송근호,이영원,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2008 動物醫科學硏究誌 Vol.15 No.1
A 8-year-o1d castrated male Shit-tzu dog was presented with chronic, severe and recurrent bilateral otitis externa. Clinical signs were stenosis, swelling, severe discharges from external auditory canal and pruritus of the ear. A diagnosis of the patient was made based on history, Physical examination, otoscopic examination, cytological examination and radiography. The dog was diagnosed to end-stage otitis externa and followed by treatment with systemic cyclosporine administration and topical solution. Clinical symptoms were resolved after 4 weeks cyclosporine therapy.
조나영,박성준,최호정,정성목,송근호 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2012 動物醫科學硏究誌 Vol.19 No.1
A Bicon Frise (7-month-old, intact female, B.W.: 3.5kg) was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with the history of the murmur which was picked up during routine vaccination. The grade 3 of continuous murmur was identified on the auscultation. In the thoracic radiography, descending aorta and main pulmonary artery were enlarged and vertebral cardiac scale (VHS) was 10. In the echocardiography, turbulent and continuous positive flow was identified in the pulmonary artery at the right parasternal short axis view. We found the patent ductus arteriosus (PDA) connected the main pulmonary artery with the aorta by CT image. So, the diagnosis of PDA was made. The continuous murmur was not identified on the auscultation after surgical correction was achieved by ligation of PDA.
송우리,이시예,신에스더,박희서,정성목,송근호,김명철 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
A 4 years old, mixed male dog with a history of traffic accident was presented to the Veterinary Medical Teaching Hospital of Chungnam National University with tachypnea and respiratory distress. Physical examination showed that the dog was auscultated crackles sounds, dysynchronous abdominal breathing pattern, hemoptysis, hematuria, urodynia and right and left scleral congestion. Blood and blood chemical examination revealed that WBC, AST and ALT was highly elevated. Parenchymal pulmonary fluid and closed pneumothorax were observed by thoracic radiography. This case was diagnosed as pulmonary contusion. Intravenous fluid and oxygen was administered and also dexamethasone(1mg/kg, Ⅳ), furosemide(2mg/kg, Ⅳ), (ampicillin, 20mg/kg, Ⅳ) and meloxicam(0.2mg/kg, PO) were intravenously injected for 5 days. Abnormal clinical signs were disappeared after treatment.