β-NSF계와 빈졸계 계면활성제로 변성된 인조석의 물성

조현영,박성기,김진만,서정목 공주대학교 자원재활용 신소재 연구센터 1999 1차년도 센터 성과집 Vol.1999 No.-

건축용 외장재로 사용되는 인조석은 혼합수, 시멘트, 석분, 경량골재를 사용하여 만들어지는데 본 연구에서는 제조단가를 낮추고 물성을 향상시키기 위하여 β-NSF제 계면활성제와 빈졸계 계면활성제를 사용하였다. 본 연구를 통해 β-NSF제와 빈졸계 계면활성제의 최적 배합비가 1.0wt%와 0.1wt%됨을 도출하였고, 새로 개발된 인조석은 기존의 인조석에 비하여 물성이 약 20% 증가하고, 동결융해 저항성이 300% 증가하였다. 그러나, 제조가격은 기존의 제품에 비해 30% 이상 감소된다. Extrior finishing matcrials of artificial stones are manufactured with minture of water, cement, stone powder and light-weight aggregate. In this rescarch, we tried to find a way of increasing the physicl properties and decreasing the manufacturing cost of artificial stone. So we used β-NSF base surfactant and vinsol base surfactant to the artifical stone mixture instcad of light weight aggregatc. The optimum dosage of the β-NSF and the vinsol surfactants for artificial stone are found to be 1.0 wt % and 0.1 wt % of cement, respectively. The physical properties increased ca 20% and the durability for freezing &thawing of the new frtificial stone increased ca 300% while the manufacturing cost of the new artificial stone decreased as much as 30%.

B -NSF계 & 빈졸계 고분자로 변성된 인조석의 물성에 관한 기초 연구

조헌영,서정목,박성기 공주대학교 방재연구센터 1998 공주대학교 방재연구센터 논문집 Vol.2 No.-

In the recent years, artificial stone has been used as exterior finishing materials of bullding. Artificial stone is manufactured with mixture of cement, stone powder and light-weight aggregate. In this research, we tried to find a way of inceasing the properties needed for better quality artificial stone. So, we used β-NSF modifier and vinsol modifier to improve the physical properties of artifical stone. Through this research, we found that the optimum dosage of the β-NSF & the vinsol polymer is 0.1 wt% and 0.05wt% of cement.

개에서 발생한 동맥관개존증 치료 증례

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.

개에서 발생한 추간판 탈출증의 수술적 치료 1례

조재금,이재연,정성목,김명철 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1

Seven-year old, castrated male pekingese was presented with sudden onset of pain and tetraparesis. He was diagnosed with multiple intervertebral disc disease (lesion: C6-7 [mild], T12-13 [mild], L2-3 [moderate] via MRI in 2006. After undergoing conservative therapy at local hospital, he had more severe symptom in December 2009 than before. In order to identify exact site, he had been taken second MRI and transferred to CNU VMTH. Definitive diagnosis is also multiple intervertebral disc disease (IVDD) with the same lesion except C3-4 (+++). The spinal cord between C3 and C4 is ventrally compressed by intervertebral disc and the compression is much more severe than other lesions. Since the symptoms were severe and took place rapidly and didn't respond to medical treatment, surgical treatment, ventral slot for new lesion(C3-4) was planned. After the ventral compression of spinal cord between C3 and C4 was achieved, he showed enhancement which is gradual return to normal neurologic response, sternal recumbency, and occasional standing. After postoperative treatment at local hospital, he fully recovered to the normal. It was considered that accurate diagnosis timely adequate treatment are essential for the cure of IVDD.

수정진동자를 이용한 계면활성제의 특성 분석

송성훈,박진영,이행자,조홍식,장상목 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.2

The phase transition phenomena and the phase separation phenomena of surfactants(SPES) are analyzed using QCA with resonant frequency and resonant resistance. The phase transition phenomena of SPES at 30℃ can be determined by measuring the resonant frequency and resonant resistance by lecithin coated on quartz crystal. The surfactants capacity of SPES can be analyzed by measuring the resonant frequency and resonant resistance of surfactants using QCA.

개의 신장 및 요관결석증 1례

심재현,정성목,신상태,조종기 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

A 1-year 2-months old Shih-tzu dog was presented with history of abdominal distention and tenderness, vomiting, anorexia and constipation. On physical and laboratory examination, WBC count was severely elevated (48.38×10^(6)/μl). On radiographs and ultrasonographs, dilation of right renal pelvis and right proximal ureter and renal calculi of both kidney were shown. It was diagnosed as a infectious renal and ureteral urolithiasis. Pyelolithotomy of right kidney was undertaken. After operation, normal urination was observed and appetite was recovered. By ultrasonographic examination, hyperechoic mass was not observed in the right kidney.

개에서 발생한 슬개골 탈구 1례

이병희,정성목,조종기,신상태 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

A five year old female Yorkshire terrier dog with a history of hindlimb lameness was referred to the Veterinary Teaching Hospital of Chungnam National University. The patient had been treated surgically two times for patellar luxation in other animal hospital. On physical examination, hindlimb lameness, pain on left hindlimb and Lt/Rt medial patellar luxation (Grade Ⅲ) were observed. On the results of hindlimb radiographs, bilaterally medially luxated patella and degenerative joint disease (DJD) sign at both stifle joints were observed. According to physical examination and radiographs, it was diagnosed as bilateral medial patellar luxation (Grade Ⅲ). The left hindlimb of patient was surgically treated with trochlear wedge resection (TWR), tibial tuberosity transposition (TTT), patellar and tibial antirotational suture and lateral retinacular overlap. After the surgical treatment, the patient was slowly recovered.

세침 흡인술을 이용한 종창된 림프절의 세포학적 평가

백강현,윤기영,최호정,정성목,이영원,조성환,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1

Fine needle aspiration(FNA) cytology is considered as the diagnostic technique of choice in the assessment of swellen lymph nodes. The aim of this study is to determine the indication and diagnostic method of FNA of lymph node lesions performed at Veterinary Medicine Teaching Hospital of Chungnam National University. The records of 16 patients which had undergone FNA during the study period were retrieved. The cytological results were classified as lymphadenitis, lymphoid hyperplasia and lymphoma. Lymphoma cases were classified as B-cell origin and T-cell by immunophenotyping. The result of the FNA cytological diagnosis showed that nine (56%) of the patients were lymphoma, five (31%) of the patients were lymphoid hyperplasia and two (13%) of the patients were lymphadenitis.

개 비장 질환의 미세세침흡입술을 통한 세포병리학 검사 4례

김현아,윤기영,최호정,정성목,이영원,조성환,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1

To evaluate the accuracy and diagnostic significance of cytopathological diagnosis of canine splenic disorders, cytopathological examination throgh fine-needle aspiration(FNA) referred to Veterinary Medical Teaching Hospital of Chungnam National University were retrospectived. Splenic neoplasm, hemolymphatic neoplasm, hyperplasia, extramedullary hematopoiesis and splenitis were diagnosed canine splenic disorders through cytopathological examination. The patient should be identified what coagulation profile are normal before aspiration, because complication such as hemorrhage could happen. The 4 cases were identified symmetric, asymmetric splenomegaly on abdominal ultrasonography and then were performed ultrasound-guided FNA. The 4 cases were diagnosed hemangiosarcoma(2), hyperplasia(1) and extramedullary hematopoiesis(1) by clinical signs, hematological examination, and cytopathological examination. Cytopathological examination through FNA was cost-effective, no gneral anesthesia, no complication, and non-invasive method of diagnosis for canine splenic disorders.

개에서 피지선 과형성의 진단 및 치료 증례

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.