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개에서 Chiari-like malformation에 의한 척수공동수증과 수두증의 발생 1례
신영지,박정희,김영실,최호정,이영원,정성목 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.-
A 2.5㎏, 11-year old, intact female mixed breed dog with 1 year history of sporadic seizure was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. There were no significant finding in CBC and serum chemistry. Based on X-ray, CT scan and MRI, it was diagnosed as syringohydromyelia and hydrocephalus caused by Chiari-like mlaformation. Prednisolone, furosemide and phenobarbital was administered orally. Depend on the number and severity of seizure, the dose of phenobarbital was adjusted. Seizure episode was reduced.
정재헌,김정수,김종민,김영한,이상록,장상목 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1
In this study, the equipment and method to recyle waste-paint, were developed and investigated. The efficiency of drying and pulverizing the waste-paint were improved via vescosity reducing process and microwave energy source with a blast of hot air. This method may be useful to recyle the waste-paint, rubber and plastics.
鄭榮穆,辛民敎 대한본초학회 1987 大韓本草學會誌 Vol.2 No.1
In this study the effect of Radix Caraganae Water Extract (R.C.W.E.) on the blood pressure of the rabbit was investigated. The results of experiment are as follows : 1. Blood pressure manifested gradual response by fall 8.80±1.74, 17.86±3.11, 26.67±3. 46㎜Hg in proportion to the administration of 0.1, 0.3 and 1.0㎖/㎏ of R.C.W.E. 2. Depressor responses to R.C.W.E. were not blocked by Atropine. 3. Depressor responses to R.C.W.E. were not blocked by Propranonol. 4. Depressor responses to R.C.W.E. were not blocked by Hexamethonium. 5. Depressor responses to R.C.W.E. were not blocked by Pheniramine maleate and Cyproheptadine.
멜라민-페놀 수지와 폐 피혁 분으로 만든 복합체의 물성
조헌영,서정목 공주대학교 자원재활용 신소재 연구센터 2002 센터사업 성과집 Vol.- No.1
The leather-resin(ST-MP) composites were made with leather shaving dust(ST) and melamine-phenol resin(MP) by hot pressing method. The mixing ratio of MP:ST, the hot pressing time and the hot pressing temperature for the composites were selected to the experimental factors in this experiment. The physical properties, such as the tensile and the flexural strengths and the extension at maximum of the composite, were tested. From L_9(3^4) orthogonal test, it is found that the ST-MP composites which have tensile strength : 5.8∼12.4 MPa, flexural strength : 20.2∼33.8 MPa, extension at maximum : 0.23∼0.44% are made in this conditions of MP mixing ratio : 150∼200%, hot pressing time : 7∼9 min, and hot pressing temperature : 179∼190℃.
알칼리용액으로 처리된 폐피혁 분이 석고-피혁 복합체의 물성에 미치는 영향
조헌영,서정목,전기석,이기환 공주대학교 생산기술연구소 2001 論文集 Vol.9 No.-
Gypsum material has strong compressive strength and excellent resistance against fire. But, these material has some demerits ; weak water-resistance, heavy specific gravity and low physical properties in flexural and tensile strengths. While, leather shaving dust(LSD) which is much produced from leather manufacturing company in waste has strong tear and tensile strengths, the properties of the high hygroscopic and the superior thermal insulation. In this research, gypsum-leather composites were made with gypsum and LSD. And the physical properties of those were tested. The optimum dosage of LSD for gypsum-leather composite was decided to 1~5%(w/w) of the gypsum. In that case, the composit which has compressive strength: 147~272 kg_(f)/cm^(2), flexural strength: 66~87kg_(f)/cm^(2), specific gravity: 1.11~1.29 is made.
徐延穆,吉德洙,孟學永 公州大學校 基礎科學硏究所 1994 自然科學硏究 Vol.3 No.-
공중합체 내의 염소 성분의 함량 변화는 methylal을 용매로 사용하였을때 3% 가교도의 공중합체가 최대이었으며 그 이상의 가교도를 지닌 공중합체에서는 거의 동일하였다. 팽윤율은 Methylal 용매중에서 3% 가교화 ST-DVB 공중합체가 최대로 팽윤되었으며 그 이상의 가교도를 지닌 공중합체에서는 자동가교의 영향으로 인하여 거의 일정하였다. ST-DVB 공중합체의 다공도 변화는 가교도가 5%일때 최대였으며 그 이상에서 거의 일정하였다. Crosslinked ST-DVB Copolymer was Chloromethylated, vinylated, and orgnometalated. When degree of crosslinkage was 3%, the chlorine content and the degree of swel ling of the polymer was highest in methylal solvent. The pore volme is highest in 5%-crosselinked polymer.
Poly-(acrylic acid-co-methylacrylate)합성조건에 따른 시멘트계 재료의 물성
조헌영,서정목,이효진,이기환,김진만,맹학영 공주대학교 생산기술연구소 2000 論文集 Vol.8 No.-
The water soluble polymers based on polycarboxlates are come into the spot-light in the detergent fields of CaCO_3, Al(OH)_3 and leather industries. In this research, we synthesized molecular weights(Mn) by changing the concentrations of monomer(acrylic acid-methylacrylate mixture), chain transfer agent(butanethiol) and initiator(ammoniumpersulfate). We investigated the influences on the fluidities(the flow & the mini slump) and the setting times of cement material admixtured with the copolymers by the statistical method. The optimum synthesis formulation of the poly-(AA-co-MA) for cement materials is at the concentrations of monomer 50 M%, chain transfer agent 6.0 M% and initiator 2.0 M%. The number-average molecular weight of that was decided on 7,600 by the viscosity method.
박정희,김영실,신영지,박창식,전무형,김명철,정성목 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.-
A 3-year old, male Jindo dog was referred with history of tenesmus, dyschezia and recurrent rectal prolapse. On the physical examination, the rectum was prolapsed about 10 cm, congested and necrotized. Fecal incontinence and pain were observed. Complete blood count revealed a mild leukocytosis and there were no remarkable abnormalities in serum biochemistry profiles. It was diagnosed as a rectal prolapse. Rectal resection and anastomosis was performed for necrotic tissue removal. On postoperative fecal smear, protothecosis was observed. Amphotericin B was administered. There has been no evidence of recurrence of rectal prolapse for ten months.
徐延穆,柳百能,孟學永 公州大學校 基礎科學硏究所 1994 自然科學硏究 Vol.3 No.-
가교밀도가 다른 몇가지 EDPM 가환물을 제조하여, 가교밀도가 탄성체의 기계적 성질에 미치는 효과등을 검토하였다. 가교밀도가 증가할수록 유리전이온도가 증가하였다. 팬텀모델이 가교밀도를 결정하는데 최적이었다. 문턱 개열에너지는 29~127J/m2 범위로 판명되었다. Several samples of the EPDM vulcanizates with various crosslink density(XLD) are prepared by changing the addition amounts of surf fur and ENB. The XLD data are obtaned from experiments, such as the swelling and stress, and their effects on the mechanical properties of the elastomer are studied. The XLD is increased as the amount of sulfur and ENB increased and the density of elastomers, the amount of gel, and the glass transition temperature increased accordingly, while the molecular weight between crossllinking points of the network(Mc) decreased. The XLD data obtained from swelling and stress experiments are due to the physical constraints on the juntion position imposed by surrounding chains. It was also found that the phantom model gives better agreement in determining XLD than the affine model with the experimental data. Hysteresis ratio is found to be increasing as the strain rate, tear energy, and Mc increased, and as the XLD decreased. It is also found that the storage modulus increased as the XLD increased in the dynamic mechanical properties. The 100% modulus are also found to be increasing as the XLD increased, and a linear relationship of M100=0.124×10-4N0+0.74 is obtained. The tear energy increased as the tear rate and temperature also found to be a linear function of the XLD, and the threshold tear energy is a range of 29∼127J/m2.
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.