Barium-Ferrite에서의 첨가제의 영향

송종훈,오영우 경남대학교 신소재연구소 1992 論文集 Vol.2 No.-

고보자력(high coercivity)의 Ba-ferrite를 합성하기 위하여, 초기 원료의 혼합과정에서 첨가제인 P₂O_{5}, Na₂O등을 첨가하여 이들의 자기특성에 미치는 영향을 확인하였다. SEM분석 결과 첨가제는 Ba-ferrite의 입자성장을 억제시키고, 밀도를 증가시킨 잔류자속밀도 및 보자력의 값을 동시에 증가시키는 효과를 가져왔다. In order to obtain the high-coercive ferrite, P₂O_{5}, Na₂O and K₂O were added in Ba-ferrite. For the liquid coats each grain, the materials may often be sintered to a higher density a t a low temperature with less of a tendency for exaggerated grain growth and improve the magnetic properties. The effects of additives on Ba-ferrite prepared by dry method were investigated. The experimental results are as follow. 1) Additives impeded grain growth when sintering, and thickness(t) increased with a decrease the D/t value. 2) Coercive force and remanence of Ba-ferrite were improved by the addition of P₂O_{5}-K₂O and P₂O_{5}-Na₂O.

외배엽 이형성증 환자의 임상적 치험례

오소희,권순원,김종수,김용기,임헌송 대한소아치과학회 2000 大韓小兒齒科學會誌 Vol.27 No.2

Ectodermal dysplasia(외배엽 이형성증)은 외배엽성 기관에 한가지 이상의 선천적 이상소견을 특징으로 하는 질환이다. Ectodermal dysplasia는 약 120종류 이상이 보고되고 있고, 이 중 Hypohidrotic ectodermal dysplasia가 가장 잘 알려져 있으며 이는 성염색체 열성인자에 의해 유전되며 남성에서 호발한다고 한다. 임상증상으로는 무한증, 감모증, 무치증 혹은 핍지증이 가장 특징적이다. 이외에도 무피지증, 손톱이형성증, 가늘고 성긴 머리카락, 두드러진 이마, 안장코, 돌출된 안와상부, 입술의 돌출과 함께 피부가 건조하고 땀샘이 결핍되어 있어서 더위를 참지 못하고 발열이 일어나기 쉽다. 본 증례의 환자는 단국대학교 치과병원 소아치과에 내원한 6세 6개월된 남아로써 무치증을 보이는 Hypohidrotic ectodermal dysplasia로 진단되었고 환자의 심미적, 기능적 결함을 해소하기 위해 총의치로 치료를 시행하는 동안 다소의 지견을 얻어 이를 보고하는 바이다. 주요어 : 외배엽 이형성증, 무치증, 총의치

地形, 水系, 水質 및 地質

宋武永,朴鍾五 忠南大學校 環境問題硏究所 1991 環境硏究 Vol.9 No.-

제품상징주의 결정요인에 관한 연구 : 광고표현성, 브랜드와 제품친숙성, 제품평가적 특성을 중심으로

宋容燮,朴鍾旿 中央大學校 經營硏究所 1997 經營學論集 Vol.24 No.1

Paraquat 독성에 미치는 Dicumarol과 Allopurinol의 병합 투여 효과

송명화,정미숙,오순식,박재윤,차종희 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Despite intensive investigation into paraquat toxicity, neither the final cytotoxic mechanism nor a clinically useful antidote has been discovered. The mechanism of paraquat cytotoxicity is also debatable, but it is generally accepted that a redox reaction occurs between reduced paraquat and molecular oxygen. The intracellular reduction of paraquat occurs by various enzymes, such as DT-diaphorase, xanthine oxidase and glutathione reductase. In present study, we investigated that the effects of allopurinol, a xanthine oxidase inhibitor, and dicumarol, a DT-diaphorase inhibitor, in paraquat-intoxicated rats. The survivals of paraquat-intoxicated rats were increased by allopurinol treatment compared to paraquat-treated control rats , but not effected by dicumarol treatment. The activity of xanthine oxidase in the liver of allopurinol-treated rats was decreased and DT-diaphorase activity in liver of dicumarol treated rats was also decreased compared to normal control rats. The contents of glutathione in liver of paraquat treated rats was decreased but in paraquat+allopurinol treated rats, the decrements of glutathione contents was reduced but in paraquat+dicumarol treated rats, liver glutathione level was not changed compared to paraquat-treated rats. These results suggest that paraquat toxicity maybe reduced by administration of allopurinol but dicumarol did not have such effects .

혈액투석중인 만성신부전환자에서 고혈압과 각종 지표와의 관계

송종오 건국대학교 의과학연구소 2001 건국의과학학술지 Vol.11 No.-

Hypertension is a common and difficult clinical problem to manage in patients undergoing chronic hemodialysis. In recent years, there has been increasing interest in defining the role of hypertension as a risk factor for cardiovascular disease in this population, developing techniques to improve blood pressure control, and assessing their effect on cardiovascular morbidity and mortality Prospective studies regarding the relationship between blood pressure and mortality in hemodialysis populations have been inconsistent and controversial. In this study, relations between hypertension and various parameters of patients with chronic renal failure on maintenance hemodialysis were analyzed. Blood pressure was higher in younger and male patients than older and female patients, Patients with diabetes had lower postdialysis diastolic blood pressure and patients with cardiovascular complications had higher blood pressure than patients without complications. Patients with low comp1iance with dialysis had higher blood pressure. Adequacy of dialysis such as Percent Urea Reduction Rate(PUR) and Kt/V was negatively correlated with blood pressure. But interdialytic weight gain was not related with change of blood pressure. And other laboratory parameters including hemoglobin, albumin, total cholesterol and sodium showed no correlations with high blood pressure.

대망에 발생한 방선균증 1례

송상훈,심찬섭,이문성,김진오,조주영,김영석,문종호,이진우 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

Actinomycosis is an uncommon chronic suppurative disease characterized by multiple abscess, draining sinuses, abundant granulation, and dense fibrous tissue, caused by the actinomyces organisms. It occurs in three major sites: cervicofacial, abdominal, and thoracic. The abdomen is the second most common involved site in previous studies, and there are three ways this organism can affect the gastrointestinal tract: through a blood-borne infection, by swallowing, or by proliferation at a more distal intestinal area. Abdominal actinomycosis is an unusual disease but remains an important differential diagnosis in patients with abdominal mass. Obtaining the diagnosis is difficult and rarely made preoperatively, but provide the key to its management. Medical therapy is effetive in eradicating the disease; however, because of the large amount of reactive fibrosis formed by the infection, it requires long-term therapy. Surgical treatment may be essential in many cases, primarily when malignancy cannot be excluded or if extensive necrotic tissue exists. There are a few description for actinomycosis involving omentum. We report a case of patient with omental actinomycosis, suspected to have a malignancy requiring an exploratory laparotomy with resection.

男左女右에 對한 臨床的 考察 : 男左女右 中風中心

송인선,김일수,최승훈,오민석 대전대학교 한방병원 2002 惠和醫學 Vol.11 No.1

In oriental medicine, man is yang(陽) and woman is eum(陰). Qi(氣) is yang and blood(陽) is eum. Right side is yang and Left side is eum. Man have more Qi than woman. Woman have more blood than man. Right side is man's dominant side and left side is woman's dominant side. Therefore left side is likely to man's affected side and right side is woman's affected side. We researched correlation between sex and affected side in CVA(cerebulovascula accident) and concluded that sex and affected side in CVA is not related.

Osteotome Sinus Floor Elevation Procedure를 이용한 임프란트 매식

송종운,조용기,박홍주,김영운,오희균,유선열 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.2

Maxillary sinus has an anatomic limitation to bone support available for dental implant. When there is less than 10㎜ of bone remaining between the upper alveolar ridge crest and the maxillary sinus floor, bone augmentation should be considered. In 1994, Summers reported two sinus floor elevation techniques of limmediate implant insertion, using osteotomes, for patients who have at least 5㎜ of bone remaining between the alveolar ridge crest and the maxillary sinus floor. One technique is osteotome sinus floor elevation (OSFE) procedure in which uses osteotomes to elevate the sinus floor. The other is bone-added OSFE (BAOSFE) procedure in which bone graft is added into osteotomy site. Both procedures conserve all of the remaining bone and selectively displace it upward, thereby raising sinus floor. This study was aimed to evaluate the long-term success rate of implants which had been placed by osteotome sinus floor elevation procedure. Between February 1996 and June 1998, 10 implants were placed using OSFE or BAOSFE procedures in 6 patients who had at least 6㎜ of bone remaining between the alveolar ridge crest and the sinus floor. OSFE procedures were performed in patiens, 2∼4㎜ sinus floor elevation was needed, whereas BAOSFE procedures were done in patines, more than 4㎜ sinus floor elevation was needed. During the mean follow-up period of 4 years 4 months (3 years 6 months ∼ 5 years 9 months), no implant was failed and all patients showed good functional results. OSFE and BAOSFE procedures seemed technically easier and less invasive compared to conventional sinus lift procedure. And both procedure have good success rate.

알코올성 섬망후 발생한 횡문근 융해와 근색소뇨증에 의한 급성 신부전증 1례

송종오 건국대학교 의과학연구소 1996 건국의과학학술지 Vol.6 No.-

Rhabdomyolysis and myoglobinuria are associated with acute renal failure. The cause of rhabdomyolysis is diverse: disturbance of muscle metabolism, alcohol abuse, primary muscle disease, sustained seizure, infection, drugs or toxins. Rhabdomyolysis is abnormal clinical condition that myoglobin and other muscle cell components are released from injured muscle, and causes myoglobinuria and acute tubular necrosis. A 30 year old man developed acute renal failure with rhabdomyolysis and myoglobinuria after sustained seizure due to alcohol withdrawal delirium. A conservative management of renal failure was failed and hemodialysis was done. He recovered uneventfully from renal shut down.