알코올리즘 환자에서 뇌교외수초용해증과 연관된 주기교대눈떨림과 주기교대주시편위

강성원,이명제,정주리,김영진,양현덕 원광대학교 의과학연구소 2009 圓光醫科學 Vol.24 No.1

주기교대눈떨림와 주기교대주시편위는 이상안구 운동에서도 흔히 관찰되지 않는다. 이런 안구운동은 뇌교와 소뇌에 병변이 있을 때 나타난다고 보고되고 있다. 50세 남자 환자가 과음을 하고 난 이후 심하게 구토를 하여 입원하였다. 다음날 아침에 의식이 없었으며 주기교대눈떨림과 주기교대주시편위가 관찰되었다. 뇌자기공명영상에서는 뇌교나 소뇌에 병변없는 교뇌외수초용해증에 합당한 소견을 보였다. 저자는 아마도 교뇌외수초용해증이 소뇌와 전정신경핵의 경로중에 GABA 시스템에 이상이 발생하여 주기교대눈떨림과 주기교대 주시편위가 나타났을 것으로 추정한다. Background; Periodic alternating gaze deviation(PAGD) and periodic alternating nystagmus(PAN) are rare forms of abnormal eye movement. Multiple lesions in the cerebellum and brainstem have been reported with PAN and PAGD. Case Report; A 50-year-old man presented with severe vomiting after binge drinking. The next morning he. became vegetative state and showed PAGD and PAN. Brain MRI showed findings compatible with extrapontine myelinolysis(EPM) without any brainstem or cerebellar lesions. Conclusions; We postulate that the disturbed GABAnernic system in the pathway from the cerebellum to vestibular nuclei caused probably by EPM developed PAGD and PAN.

공정안전용 Polymer Blend형 습도센서의 특성 연구

강영구,조명호 한국안전학회 2004 한국안전학회지 Vol.19 No.3

Conductive polymer blends and composites are widely used for different safety application such as electrostatic charge dissipation(ESD), electromagnetic interference(EN/U) shielding, electrostatic prevention and safety chemical sensor. In order to prepare a impedance-type humidity sensor that is durable at high humidities and high temperature, electically conductive polymer blends based on dial lyldimethylammonium chloride(DADMAC) and epoxy were prepared in this study. The polymer blends type conductive ionomer exhibits reaction each other DADMAC and epoxy in MIR and DSC analysis. The blends material was traced by new peak at 1600cm-1 and appeard improvement of thermal resistance by melting point shift. Alumina substrate was deposited a pair of gold electrodes by screen printing. The blend material were spin-coated with a thin film type on the surface of alumina substrate. The polymer bleld type sensor exhibits a linear impedance increasing better than DADMAC coated humidity sensor. Also it shows good sensitivity, low hysteresis and durability against high humidity.

공정안전용 Polymer PTC 소재의 제조 및 특성

강영구,조명호 한국안전학회 2003 한국안전학회지 Vol.18 No.3

Polymeric positive temperature coefficient(PTC) composites have been prepared by incorporating carbon black(CB) into high density polyethylene(HDPE), polyphenylene sulfide(PPS) and polybutylene terephthalate(PBT) matrices. A PTC effect was observed in the composite, caused by the large thermal expansion due to the consecutive melting of HDPE, PPS and PBT crystallites. This theory is based upon the premise that the PTC phenomenon is due to a critical separation distance between carbon particles in the polymer matrix at the higher temperature. The influence of PTC characteristics of the PPS/CB composite can be explained by DSC result. HDPE, one of prepared composition, exhibit the higher performance PTC behavior that decreaseing of negative temperature coefficient(NTC) effect and improved reproducibility by chemically crosslinking. Also, PBT/CB and PPS/CB composites exhibit the higher PTC peack temperature than HDPE/CB PTC composite, individually 200℃and 230℃. These FTC composite put to good use in a number of safety application, such as self-controlled heater, over-current protectors, auto resettable switch, high temperature proctection sensor, etc.

Aspergillus nidulans로부터 분획한 Protoplasts의 Reversion에 관하여

姜明奎,梁永基,李榮河 충남대학교 자연과학연구소 1984 忠南科學硏究誌 Vol.11 No.2

The processes of reversion of Aspergillus nidulans protoplasts fractionated at varing digestion periods have been investigated. The early-produced protoplasts showed higher enzyme (CMCase and β-glucosidase) activities and protein contents than the late-produced protoplasts. Similar tendencies were also observed in the reversion frequencies of the fractionated protoplasts. The reversion frequency of protoplasts isolated with 1hr-digestion was approximately 90 times higher than that of protoplasts isolated with 6hr-digestion. In liquid medium stabilized osmotically with 0.6M (NH_4)_2SO_4, two major reversion patterns of protoplasts were found. In the first, normal hyphae were directly formed from protoplasts. In the second, chains of yeast-like budding cells were produced from protoplasts and eventually normal hyphae were developed from the terminal cell of budding chain or the opposite side of the protoplasts. The proportion ratio of direct formation of normal hyphae to yeast-like forms during the processes of reversion was greatest in protoplasts isolated with 1hr-digestion and decreased in proportion to increasing digestion periods. It is suggested that the processes of reversions of A. nidulans protoplasts are related to the activities of physiological metabolism of heterogeneous protoplasts originated in highly differentiated parent mycelium.

광범위 베타 락탐계 항생제 분해 효소를 생성하는 폐렴간균에 의한 균혈증이 발생한 환자에서 감영의 위험 인자 및 치료 결과

강철인,김성한,방지환,김홍빈,박상원,최영주,오명돈,김의종,최강원 대한감염학회 2003 감염과 화학요법 Vol.35 No.2

목적 : 본 연구는 ESBL을 생성하는 K. pneumoniae에 의한 균혈증 환자에서 감염의 위험 인자 및 치료 결과를 알아보고자 시행하였다. 방법 : 1998년 1월부터 2002년 4월까지 혈액 배양 검사에서 동정된 K. pneumoniae를 대상으로 NCCLS guidelines과 이중 디스크 확산법(double-disk diffusion test)을 이용하여 ESBL 생성 여부를 확인하였다. ESBL 생성 균주에 의한 균혈증 환자 60명(환자군)에 대해 ESBL을 생성하지 않는 균주에 의한 균혈증 환자들(대조군)을 연령, 성별, 균혈증 발생 시점을 고려하여 1:2 또는 1:3으로 배정하였다. 총 159명의 대조군을 선정하였고 후향적인 환자-대조군 연구를 시행하였다. 결과 : 환자군과 대조군 사이에 연령, 성별, APACHE Ⅱ score, 주된 감염 부위의 유의한 차이는 없었다. ESBL을 생성하는 K. pneumoniae에 의한 균혈증이 발생할 독립적인 위험 인자에는 요관 삽입, 균혈증 발생 이전 72시간 동안 침습적인 시술을 받은 경우, 균혈증 발생 이전 30일 동안 투여받은 항생제 개수가 있었다. 초기 항생제 치료 72시간 후의 반응을 평가하였을 때, 완전 반응(complete response)은 대조군에서 더 많았고(13.3% vs. 40.3%, P<0.001), 치료 실패(treatment failure)는 환자군에서 더 많았다(33.3% vs. 11.9%, P<0.001). 7일 사망률은 환자군에서 20% (12/60), 대조군에서 15.6% (25/159)이었고(P=0.451), 30일 사망률은 환자군에서 30% (18/60), 대조군에서 24.5% (39/159)이었다(P=0.410). ESBL 생성 균주에 의한 균혈증이 있는 환자들에서 최종 항생제 치료가 부적절했던 환자들을 제외하고 30일 사망률을 분석하였을 때 효과적인 항생제 치료의 지연은 사망률을 높이지 않았다(11.1% vs. 9.1%, P=1.000). 결론 : ESBL을 생성하는 K. pneumoniae에 의한 균혈증이 있는 환자에서 초기 항균제 치료 72시간 후의 치료 반응률은 낮지만 사망률은 유의하게 증가하지 않았다. 원인균이 동정된 후 최종 치료 항생제의 선정이 적절하다면 초기에 효과적인 항생제 투여의 지연은 사망률을 유의하게 증가시키지는 않았다. Background : This study was conducted to evaluate risk factors for infection and treatment outcome of bloodstream infection due to extended spectrum β-lactamases(ESBL)-producing K. pneumoniae. Methods: ESBL production was evaluated by NCCLS guidelines and/or double-disk synergy test in K. pneumoniae blood isolates stored from January, 1998 to April, 2002. Sixty patients with bloodstream infection due to ESBL-producing K. pneumoniae (case patients) were compared with 159 matched control patients with bloodstream infection of non-ESBL-producing K. pneumoniae. Retrospective case-control study was performed. Results : There were no significant differences in age, sex, APACHE Ⅱ score, and the primary site of infection between the case and control groups. In multivariate analysis, significant independent risk factors associated with bloodstream infection due to ESBL-producing K. pneumoniae were urinary catheterization, invasive procedure within previous 72 hours, and the number of antibiotics administered within previous 30 days. In clinical response at 72 hours after initial antibiotic treatment, complete response rate was higher in the controls (13.3% vs. 40.3%, respectively, P<0.001), however, treatment failure rate was higher in the cases (33.3% vs. 11.9%, respectively, P<0.001). Overall 7-day mortality rates in the cases and the controls were was 20% (12/60) and 15.7% (25/159) (P=0.451), respectively, and overall 30-day mortality rates were 30% (18/60) and 24.5% (39/159), respectively (P=0.410). When the patients with bloodstream infection of ESBL-producing organism were evaluated and the patients who received inadequate definitive antibiotic treatment were excluded, delayed effective antibiotic treatment was found to be not associated with higher mortality. Conclusion : In patients infected with ESBL-producing K. pneumoniae bacteremia, clinical response rate at 72 hours after antimicrobial therapy was lower, but the increase of mortality rate was not significant. Delayed effective antibiotic treatment was not associated with higher mortality, when definitive appropriate antibiotic treatment was prescribed.

活性汚泥 微生物의 分離 및 同定

강명규,배정옥,이기종,이영하 忠南大學校環境問題硏究所 1993 環境硏究 Vol.11 No.-

To investigate the microfloral composition in activated sludge, more than six hundred bacterial and fungal strains isolated from influent sewage, return sludge and aeration tank of an activated sludge sewage treatment plant were identified to the genus level. During the holding period in the aeration tank development of diverse heterotrophic microbial populations occurred and bacterial and fungal numbers in the aeration tank were 10- to 100-fold higher than in the influent sewage and return sludge. A large number of Gram-negative rods, particularly Pseudomonas, Flavobacterium, Enterobacter, Klebsiella, and Alcaligenes were found to be the dominant genera in the aeration tank. The species of filamentous fungi Trichoderma, Aspergillus, Rhizopus and Lepiomitus, and various yeasts were frequently associated with activated sludge. The most commonly found yeast genera were Candida, Geotrichum, Saccharomyces, Torulopsis and Rhodotorula.

가역적 후외동맥 폐색으로 발현된 전조편두통 연관 뇌경색

김영진,이명제,정주리,강성원,양현덕 원광대학교 의과학연구소 2009 圓光醫科學 Vol.24 No.1

예전 인구에 근거하여 연구된 논문들은 편두통이 뇌졸중의 위험성을 높일 수 있다는 보고를 하였으며, 전조증상을 동반한 편두통은 중추신경계와 연관된 병인론적 과정을 통하여 뇌졸중과의 관련성이 있다는 보고가 있다. 그러나, 편두통성 뇌졸중의 병태생리는 아직 정확히 밝혀지지 않았다. 편두통의 발생 원인에서 혈관성 이론은 편두통을 혈관수축으로 발생하는 전조증상과 함께 대뇌 조절 장애로 발생한다는 이론으로 뇌허혈증상은 일으킬 수 있다. 전조증상을 동반한 편두통성 뇌경색은 허혈성 뇌졸중의 드문 원인이며, 또한 편두통과 허혈성 뇌졸중사이의 관련성은 아직 논란으로 남아 있다. 우리는 혈관경련 수축으로 나타날 수 있는 전조성 편두통과 관련된 뇌경색에서의 가역적 후뇌 동맥 폐색 1례를 보고한다. Several previous population-based studies reported an increase risk of stroke in association with migraine. Migraine with aura increased stroke risk with pathogenetic process in the central nervous system. However, the pathologic mechanism of migrainous infarction remains elusive. The vasogenic theory ascribes migraine to cerebral dysregulation with aura resulting from vasoconstriction. Migrainous infarction with aura is a rare cause of cerebral ischemic stroke. Also, the relationship between migraine and ischemic stroke remains controversial. We report a case of cerebral infarction associated with migraine with aura that shows reversible arterial narrowing which might be caused by vasospasm.

비만과 수척 요소에 의한 여성 체형의 분석

정명숙,김영자,강태임 안성산업대학교 1998 論文集 Vol.30 No.2

To analyse characteristics of Female somatotype by the obesity/leanness factor, female somatotypes were represented by Heath-Carter rating scale and Sheldon's discriptive classification. Then somatotype characteristics according to age group were shown. The 5 types of trunk were given 7.4 7.2 1.0(type 1), 6.2 5.4 1.3(type 2), 5.3 5.3 l.6(type 3), 3.8 3.8 3.4(type 4), and 3.5 4.2 2.9(type 5), respectively. The 4 types of lower trunk and legs were given 7.0 6.6 1.0(type 1), 5.8 5.5 1.2(type 2), 4.2 4.1 3.0(type 3), and 3.7 4.3 2.9(type 4), respectively. Among 3 component scales of somatotype, endomorphic and mesomorphic component scales became higher and ectomorphic component scale became lower with age. From the distribution of discriptive type according to age group, balanced and mesomorphic endomorph types were mainly shown in the age of twenties. Mesomorphic endomorph, mesomorph-endmorph, and endomorphic mesomorph types were evenly shown in the age of thirties. Mesomorph-endomorph and mesomorphic endomorph types were mainly shown in the age of forties.

지역 사회 감염성 폐렴에서 Cefodizime의 효능 및 안전성을 Ceftriaxone과 비교한 연구

심영수,오명돈,한성구,최강원,정희순,김영환,유철규,최형석 대한감염학회 1994 감염 Vol.26 No.3

목적: Cefodizime은 새로운 주사용 제 3세대 항생제이다. 저자들은 감염성 폐렴 환자들에서 이 약물을 하루 1번 정맥주사하였을 때 관찰되는 임상적및 세균학적 효과와 안전성을 ceftriazone과 비교하기 위하여 본 연구를 시행하였다. 방법: 1992년 6월부터 1993년 11월까지 서울대학교 병원에 지역사회 감염성 폐렴으로 입원하였던 환자 32명을 무작위로 3군으로 나누고 제 1군 : Cefodizime 1g(n=11), 제2군 : Cefodizime 2g(n=10), 제3군 : Ceftrizxone 1g(n=11)을 각각 하루 1회 정맥주사로 투여하여 그 치료율및 안전성을 비교하였다. 결과: 1)Cefodizime은 제1군 100%, 제2군 80.0%의 임상적 반응율을 보였다. Ceftriaxone을 투여하였던 제 3군에서는 81.8%의 임상적 반응율을 보였다. 이러한 임상적 반응율의 결과는 세 군간에 통계적으로 유의한 차이를 보이지 않았다(p>0.05). 2)세균학적 반응율도 세 군간에 유의한 차이를 보이지 않았다. 3)Cefodizime의 안전성의 평가에서 제1군 및 제2군에서 구토 및 오심이 2예(9.5%)에서 관찰되었고 일시적인 간효소치의 상승이 1예(4.8%)에서 관찰되었다. 경미한 공복시 위통이 1예(4.8%)에서 관찰되었다. Ceftriaxone으로 치료한 군에서는 특별한 부작용은 관찰되지 않았다. 결론: 이상의 결과로 지역사회 감염성 폐렴의 치료에 있어서 cefodizime 1내지 2g을 정맥 주사로 하루 1회 치료할 경우 적어도 ceftriaxone과 유사하게 효과적이며 안전한 것으로 사료된다. Background:Cefodizime(Modivid) is a new parenteral form of cephalosporin showing the antibacterial specturm of the third generation. The clinical efficacy and safety of cefodizime have been well proven by some previous clinical studies performed in European countries and Japan. The objective of this study was to evaluate the clinical, radiological and antimicrobial efficacy of this drug in patients with community-acquired pneumonia compared to that of ceftriaxone. Methods: We performed an open, controlled, randomized study in 32 patients with community-acquired pneumonia at Seoul national University hospital from June 1992 to November 1993. In the first group(n=11) 1g of cefodizime, and in the second group(n=10) 2g of cefodizime were respectively administered intravenously once a day. and in the third group(n=11), 1g of ceftriaxone was administered intravenously. Results: The results were as follows. 1) Cefodizime showed the clinical response rate of 100% in group I, and 80.0% in group Ⅱ. The clinical response rate of ceftriaxone in group Ⅲ was 81.8%. There was no significant statistical difference(p>0.05). 2) The rates of bacteriological efficacy wee not statistically different among three groups. 3) In the cefodizime treatment group(group Ⅰ, group Ⅱ) nausea and vomiting were observed in 2 cases(9.5%) and transient elevations of hepatic transaminases in 1 case(4.8%). Mild abdominal pain occurred in 1 case(4.8%). No significant adverse reactions were observed in the ceftriaxone treatment group. Conclusion: We could conclude that once a day intravenous cefodizime therapy was as effective and well tolerated as ceftriaxone in the treatment of community-acquired pneumonia.

마루운동 도움짚기 : 손짚고 뒤돌기 동작의 지면반력에 대한 운동역학적 분석

노영태,김명철,강영택 한국운동역학회 2001 한국운동역학회지 Vol.11 No.1

The subjects of this study are 5 male gymnastics player of the Ground Reaction Force(GRF) for study analyzed round - off flic - flac of floor exercise. A primary factor landing phase of GRF. supporting time. impact force is movement in round - off flic - flac of floor exercice. The conclusion of this study are as follow. 1. The result average of this study showed that the vertical supporting time is first maximum impact 0.017sec, second maximum impact 0.049sec, horizontal supporting time is first maximum impact 0.019sec, second maximum impact 0.054sec round - off flic - flac is floor exercice. showed fast subject D2 and C1 supporting time is short as impact force is high be closely connected between with supporting time is short as impact force is high be closely connected between with supporting time and impact force. 2. Landing motion shoewd that the maximum vertical impact force is 5454.79N that the oneself weight of about 90.BW. on the whole vertical impact force is 2666.78N that the oneself weight of about 4.37BW. 3. Pattern to shoewd that the GRF is vertical direction of passed by first impact phase low a vertex make it a zoom chandelle high level a vertex after deline be slowness reduction to round - off flic - flac of floor exercice. Pattern to shoewd that the GRF is horizontal direction from the braking force period to propulsive direction process landing motion.