심혈관계 질환으로 관상질환 집중치료실에 입원한 환자들의 혜후 측정을 위한 APACHEⅢ점수 체계의 임상적 유용성

이공섭,이창선,최현주,홍종서,강지향,김도형,이민영,오인균,김병엽,김상억,김학찬,한승혜,이재용,지영우,안경주 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

아연배소광 황산침출액의 이온평형에 미치는 온도영향

이만승,이경주 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.4

To simulate the sulfuric acid leaching solutions of zinc calcine, synthetic solutions with the composition of ZnSO_4-Fe_2(SO_4)_3-Na_2SO_4-H_2SO_4-NaOH-H_2O were prepared and solution pH was measured at the temperature of 25, 50 and 75℃. The effect of temperature on the ionic equilibria of these solutions was analyzed by considering chemical equilibria, mass balance and charge balance equations. Activity coefficients of solutes and activity of water were calculated by using Pitzer equation. The mole fractions of iron containing species were greatly affected by solution temperature and the concentration of Fe_2(SO_4)_3. In the experimental ranges of ionic strength of solution up to 9m, the pH values calculated in this study were in good agreement with those measured.

Alamine336염에 의한 FeCl₃ 용매추출평형

이만승,이경주 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.2

Solvent extraction experiments of FeCl_(3) with Alamine336 salt were performed. It was found from the oading capacity of Alamine336 salt that the solvent extraction reaction depended on the ratio of initial concentration of Alamine336 to FeCl_(3). When the concentration of Alamine336 was in excess compared to that of FeCl_(3), alamine336 participated in the extraction reaction as a dimer. When the initial concentration ratio of Alamine336 to FeCl_(3) was below three, ferric chloride was extracted by monomeric Alamine336. The equilibrium constants of solvent extraction, K_(ex)-2.22×10^(4) and K_(ex)=6.41×10^(5) for monomeric and dimeric Alamine336 respectively, were determined from extraction data by considering activity coefficient of solutes in the aqueous phase. The predicted distribution coefficients of iron agreed well with those experimentally measured.

생분해성 다공질 Calcium Phosphate 세라믹스의 제조

이경주,이중환,김석영 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.2

When porous calcium phosphate ceramics are used as a bone graft substitute, it is known that new tissue or blood vessel is grown into the porous implant due to their excellent biocompatibility. In this study, the most chemically stable β-crystalline form of calcium metaphosphate, Ca(PO₃)₂is prepared by the controlled thermolysis of monocalcium phosphate, Ca(H₂PO₄)₂. The diameter of cylindrical pores formed during cooling was controlled by a holding time at the melting point of a monocalcium phosphate and by the change of a recrystallization temperature, to obtain the most appropriate size(about 200㎛) of pores. It was observed that the increasing holding time at the melting point of monocalcium phosphate results in the decreases of pore sizes.

수학연한에 따른 AMSP(American Montessori Society Program)의 적용 효과 : 유아의 창의성과 지능에 미치는 영향을 중심으로

이용례,심성경,박주희 이화여자대학교 사범대학 교육과학연구소 2004 교육과학연구 Vol.35 No.2

본 연구는 AMSP가 유아의 창의성과 지능에 미치는 영향에 있어 수업연한에 따른 차이를 알아본 것으로, AMSP의 수업연한에 따라 구분된 1년차 집단, 2년차 집단, 3년차 집단 각 19명씩 만 5세 유아 총 57명을 대상으로 실시하였다. 전경원(2000)의 창의성 검사와 박혜원?곽금주?박광백(1996) 등이 개발한 한국형WPPSI(K-WPPIS)를 실시한 결과, AMSP의 수업연한이 높을수록 유아의 창의성과 지능발달에 전반적으로 더 큰 효과를 나타냈다. 이에 AMSP가 유아의 창의성과 지능발달을 돕는 하나의 효과적인 접근방안일 뿐만 아니라 유치원의 3년 교육기간에 AMSP를 제공받는 것이 유아의 창의성과 지능발달에 더 효과적임을 시사해준다고 하겠다. This study investigated the effects of AMSP(American Montessori Society) on young children's creativity and intelligence according to the learning term. The questions for research were as follows: 1. What is the effect of AMSP on young children's Creativity according to the learning term? 2. What is the effect of AMSP on young children's intelligence according to the learning term? The subjects of this study were 57 aged five-old children at H kindergarten in J. City. They were classified to three groups according to learning term of AMSP. The data were collected using the General Creativity Test for Children(Chon, kyoung-won, 2000), the Revised Korean Wechsler Intelligence Scale for Children (Park, kwang-bae 1995), and analysed by ANCOVA, the Scheffe test with SPSS 11.0 Program. The results of this study are summarized as follows: 1. The longer the learning term was, the more AMSP improved young children's creativity significantly. The longer the learning term was, the more AMSP improved young children's creativity significantly. 2. The longer the learning term was, the more AMSP improved young children's intelligence significantly. The longer the learning term was, the more AMSP improved young children's intelligence significantly.

침적 모형에 의한 습성침적 플럭스 수치모의

이화운,문난경,임주연 한국환경과학회 2002 한국환경과학회지 Vol.11 No.12

The purpose of this study is to estimate wet deposition flux and to investigate wet deposition characteristics by using the ADOM model. Wet deposition flux of high reactive SO_2 is estimated by applying observed meteorological parameters and concentrations of chemical species to the ADOM model. Wet deposition is largely dependent on large scale precipitation and cloud thickness. Wet deposition flux of sulfate increases, but wet deposition flux of SO_2 is small. On the whole, the pattern of sulfate flux agrees with the typical pattern of sulfate wet deposition that is high in the summer(July) and low in the winter(January)

Hinman 증후군(비신경인성 신경인성 방광) 1예

이경욱,채정호,이승주,김세웅,박원명,전태연,김광수 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.3

Objectives : The Hinman Syndrome is a condition representing urinary voiding dysfunction in a neurologically intact child. This syndrome probably is an acquired behavioral and psychosocial disorders. We present a case presenting voiding dysfuntion with no neurologic etiology. Case : The departmcnt of urology consulted the department of psychiatry for a psychiatric evaluation of a 14-year-o1d girl with a history of recurrent urinary tract infections, enuresis, and urinary dribbling since early childhood. She visited the emergency room bccausc of severe abdominal pain and hematuria. She was admitted to the department of urology. Neurological tests showed no abnormality, but a retrograde cystogram showed free vesicoureteral reflux to the level of the dilated intrarenal collecting systems. Marked blunting and dilatation of the caliccs suggested longstanding urinary flow obstruction. She had a history of scparation anxiety disorder and was very competetive, perfectionistic, and nervous. She also had very poor relationships with her friends and had difficults in managing them. Afer admission, she had stent operation and cystostomy. Antidepressant and anxiolytic medications with supportive psychotherapy were administered to treat anxiety, tension and depression. Gradually, her depressive symptoms and voiding difficulties improved. Conclusions : Psychological factors such as a perfectionistic and obsessive personality, a history of severe separation anxiety, stressors from poor interpersonal relationships and Ihe failure of an entrance examination seem to have contributes to the development and exacerbation of the urinary dysfunction. Pharmacotherapy and supportive psycho-therapy may be efective in treating associated psychiatric problems of these patients with hinman syndrome.

Cone beam형 전산화단층촬영법을 이용한 하악과두의 골변화에 관한 연구

이지운,김형섭,송주섭,김경아,고광준 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : To assess bone changes of mandibular condyle using cone beam computed tomography (CBCT) in temporomandibular disorder (TMD) Patients. Materials and Methods : 314 temporomandibular joints (TMJs) images of 163 TMD patients were examined at the Department of Oral and Maxillofacial Radiology, Chonbuk National University. The images were obtained by PSR9000N (Asahi Roentgen Co., Japan) and reconstructed by using Asahivision software (Asahi Roentgen Co.,Japan). The CBCT images were examined three times with four weeks interval by three radiologists. Bone changes of mandibular condyle such as flattening, sclerosis, erosion and osteophyte formation were observed in sagittal, axial, coronal and 3 dimensional images of the mandibular condyle. The statistical analysis was performed using SPSS 12.0. Intra-and interobserver agreement were performed by 3 radiologists without the knowledge of clinical information. Results : Osteophyte (2.9%) was found more frequently on anterior surface of the mandibular condyle. Erosion (31.8%) was found more frequently on anterior and medial surfaces of the mandibular condyle. The intraobserver agreement was good to excellent(k=0.78-0.84), but interobserver agreement was fair(k=0.45). Conclusion : CBCT can provide high qualified images of bone changes of the TMJ with axial, coronal and 3 dimensional images.

특수형 방사성 동위원소 운반캡슐의 안정성 평가

이주찬,서기석,구정회,방경식,한현수,박성원 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.1

특수형 방사성물질 운반캡슐은 국내외의 수송관련 법규에 규정된 기술기준을 만족하도록 설계, 제작되어야 한다. 본 연구의 목적은 하나로에서 생산된 192Ir 특수형 동위원소 운반캡슐의 건전성을 평가하는데 있다. 법규에서 규정된 낙하시험, 타격시험, 굽힘시헝 및 가열시험조건에 대한 안전성 시험을 수행하였으며, 각각의 시험 전후에 누설시험을 수행하였다. 또한, 안전성시험과 더불어 컴퓨터코드를 이용한 전산해석을 수행하여 안전성시험 전에 시험결과에 대한 예측자료로 활용되었다. 낙하시험 및 가열시험 결과 캡슐 표면에서 약간의 흠집과 변형이 발생하였으나, 각각의 시험에서 평가기준이 되는 캡슐의 손상이나 용융 등은 발생하지 않았다. 또한 각 시험 후 수행한 누설시험 결과 누설이 발생하지 않았다. 따라서 특수형 방사성물질 운반캡슐은 법규에서 규정하는 기술기준을 만족하도록 설계, 제작되었음이 입증되었다. All of sealing capsules to transport a special form radioactive material should be designed and fabricated in accordance with the design criteria prescribed in IAEA standards and domestic regulations. The objective of this study is to demonstrate the safety of a shipping capsule for 192Ir special form radioisotope which produceed in the HANARO. The safety tests were carried out for the impact, percussion, bending and heat test conditions. And leakage tests were carried out before and after the each test. Also, the safety analyses were performed using computer codes in order to verify the test results. The capsule showed slight scratches and deformation, and maintained its structural and thermal integrities in all tests without any severe damage or melting. It also met the allowable limits of leakage rate after earth test. Therefore, it has been verified that the capsule was designed and fabricated to meet all requirements for the special form.

중합효소연쇄반응을 이용한 도말양성 폐결핵 환자에서의 결핵균 DNA 검출방법에 관한 연구

이종진,김애경,조해정,한표성,홍석철,김주옥,김선영 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

Polymerase chain reaction (PCR) is the most sensitive and rapid method for the diagnosis of M.tuberculosis infection. Many reports have shown different methods for mycobacterial DNA extraction, but revealed many differences in simplicity and time-consumption. We studied which method was the best among 7 different ones for DNA extraction from 32 smear-positive sputa, using PCR of targeting 123bp DNA fragment of IS6110. The methods were the following : SDS-Microwave oven method, NaOH Lysis method, Triton X-100, Proteinase K method, Lysis buffer method. SDS-Proteinase K method, Bead Beater method, and Bead Beater/CTAB method. The amplification products were identified by electrophoresis on ethidium bromide-stained agarose gels, and confirmed by restriction enzyme, Southern blot hybridization, and DNA sequencing. All 32 cases were positive (100%) by the 7 different methods. It took 1 hour or more to detect DNA in SDS-Microwave oven method, NaOH Lysis method, and Bead beater/CTAB method. It took 2 hours or less in the others. SDS-Proteinase K method and Bead Beater/CTAB method were simpler and more convinient than the others. These results suggest that SDS-Proteinase K method and Bead Beater/CTAB method might be better than the others for the extraction of mycobacterial DNA in terms of simplicity and time-consumption, although all the methods were sensitive.