• Tuberculosis and Respiratory Diseases
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• 제57권5호
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• pp.465-469
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• 2004

저자들은 패혈증이나 혈액응고장애가 이상이 없는 소방이 형성된 흉막삼출 환자에서 비교적 안전한 것으로 알려진 urokinase의 주입 후에 발생한 혈흉과 이로 인한 hypovolemic shock을 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• 한국가금학회지
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• 제27권1호
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• pp.19-23
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• 2000

The effects of microbial phutase on laying performance and phosphorus utilization were examined at different levels of dietary nonphosphorus(NPP) in 320 23-week-old Hy-line brown hens for 12weeks. Diets were formulated 0.275%(T1), 0.220%(T2), 0.165%(T3) of NPP levels, and supplemental microbial phytase was 300DPU/kg diet constantly. Conventional diet(C) was formulated 0.275% NPP level without microbial phytase. Egg production and egg mass were higher in T2 than the others (p<0.05), and average egg weight was higher in T1 than the other (p<0.05). Egg productivity was tended to increase with supplemental phytase compared to conventional diet. Daily feed intake a hen also increased in T2 (p<0.05). Feed conversion ratio was improved slightly without significant difference. Eggshell breaking strength and thickness were not different significantly among the treatments. Haugh unit and yolk color were also not different. Calcium and phosphorus retention in body increased in T2 (p<0.05), but dry matter and nitrogen retention were not different significantly. Differences in nitrogen and calcium excretions were not found among the treatments. But phosphorus excretion decreased in order of dietary phosphorus levels with supplement phytase compared to C (p<0.05). Tibial ash, calcium and phosphorus were similar among the treatments. In conclusion, supplemental microbial phytase in laying diet may help to utilize phytase phosphorus, and could decrease NPP intake.

• 대한방사선기술학회지:방사선기술과학
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• 제22권1호
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• pp.49-53
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• 1999

To inquire its usefulness of the clinical application of intelligent replenishment system of automatic X-ray film processor based on film density, we processed the serial 300 sheets of radiographic film of chest [$14{\times}14"$, HR-C type] and bone [elbow & ankle($8{\times}10"$), skull($10{\times}12"$), hand & foot($11{\times}14"$), pelvis($14{\times}17"$), HR-G type, 68, 70, 77, 85 sheets respectively]. We analyzed the characteristic corves, relative speeds, average gradients and base plus fog densities every twenty five sheets. We also evaluated the developer and fixer replenishment volumes every that time. In the chest and bone radiograph two all, the characteristic curves were little change, and the relative speeds, average gradients and base plus fog densities were within the maximum control limits. The average developer replenishment volumes were about 43m1/sheet and 39m1/sheet respectively. It brings decreased results about 29% in comparison with the conventional replenishment system. In our experiences, we conclude that the intelligent replenishment system of automatic X-ray film processor based on film density maintains image quality consistently, decreases also the replenishment volumes. Therefore, this system will be resulted in economic and environmental effects, and solve problems of over and low replenishment volume.

• 대한임상독성학회지
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• 제1권1호
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• pp.27-33
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• 2003

Purpose: According as the accessibility about drugs becomes various, the occurrence of drug intoxication is increasing. Since report that doxylamine causes rhabdomyolysis often, drug-induced rhabdomyolysis is one of the most important complications in patients with drug intoxication. Acute renal failure (ARF)'s availability is important to the management in rhabdomyolysis, but report about rhabdomyolysis or ARF occurrence for whole intoxicated drugs is lacking up to now. Methods: This research did to 61 patient who had rhabdomyolysis of drug intoxication. First, object patients were divided into two gruops: doxylamine-ingested (Group I) vs non-doxylamine ingested (Group II). And then we analyzed on the early patient's clinical events and laboratory data. We used ROC curve to recognize'the early clinical factors that could forecast ARF appearance among these patients in addition. Results: Almost rhabdomyolysis was happened by doxylamine in drug intoxication ($55.7\%$). However, as compared to group II, group I showed better clinical course, lesser ARF occurrence and hemodialysis requirement. In group II, time was longer in hospital reaching from intoxication, the ARF occurrence rate was higher ($52.6\%$). Analyzing the ROC curve to useful initial factors, they were creatinine, uric acid and interval time from ingestion to hospital. These cut-off values were 1.44 mg/dL, 6.8 mg/dL and 5 hrs. Sensitivity for ARF estimate was $100\%$, specificity $69-98\%$. Conclusion: Compared to group II, Doxylamine-ingested group showed good clinical course. Creatinine, uric acid, interval time from ingestion to hospital aided in ARF estimate in drug-induced rhabdomyolysis.

• 대한임상독성학회지
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• 제2권2호
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• pp.123-128
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• 2004

Purpose: In recent review of physician suicides] the relative risk of physicians is higher than the general population. The majority of physician suicide were by poisoning. The purpose of this study was to analyse the medical personnels with suicide by poisoning compared with the general population. Methods: We reviewed medical records of 15 medical related personnels with suicide by poisoning who visited the emergency medical centers of St. Mary's and Kangnam St. Mary's hospitals from March 1998 to Aug 2004. For the comparison with general population in analysis] the collected data was acquired from medical records of 677 intoxicated patients in St. Mary's Hospital during the same period. Results: Fifteen suicides of physicians (n=7), nurses (n=4), medical students (n=2), pharmacist (n=1) and medical assistant technician (n=1) was evaluated with regard to the method of poisoning. Preferred methods were ingestion of medications orally ($54\%$) and by infusion/injection ($46\%$). The results were compared with the general population group (n=677: oral ingestion of medications $98\%$, inhalation $1.6\%$). Intoxications by infusion/injection predominated more clearly in physicians than in the total collective. Conclusion: Comparing with the general population, the tendency to a method of suicidal poisoning being typical of the profession rises among physicians and related occupations with the degree of specialization, caused by increasing knowledge, easier access to appropriate drugs and methods.

• 한국정보교육학회:학술대회논문집
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• 한국정보교육학회 2010년도 하계학술대회
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• pp.85-93
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• 2010

교육정보화 관련 연구는 주로 교육정보화의 수준 측정이나 효과에 관한 것들이었으며 타 부처나 민간 등에서 이루어지고 있는 교육정보화 관련 정책이나 정책 지원에 대한 연구는 이루어지지 않았다. 이에 본 연구는 3단계 교육정보화가 마무리되는 시점에서 타 부처 및 민간에서 진행하고 있는 교육정보화 지원 내용을 분석하여 교육정보화에 대한 시사점을 제공하고자 하였다. 연구결과, 정부에서는 국가경쟁력 강화를 위해, 정보화 역기능 대응 사업, 정보격차 해소 사업 등 교육정보화 활용측면 강조의 정책들이 추진되었다. 반면에 민간은 낙후 지역 정보화 인프라 구축 사업, 저소득층에 대한 인프라 및 교육 지원 사업 등을 추진하였다. 따라서 교육정보화 사업추진에서 인프라에 대한 지속적인 유지보수나 정보교육의 활성화를 위한 방안이 모색될 필요가 있음을 알 수 있었다.

• 대한디지털의료영상학회논문지
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• 제3권1호
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• pp.126-132
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• 1997

Purpose : To apply to Program of Auto processor quality control after comparison of Film density variations with amendments to Auto density by using Check density program and Adjust density program of calibration mode into the Laser imager. Methods : Observe Check and Adjust density variations on the Control chart with standard step and value during seven months from December, 1995 to June, 1956 extending twice a week. (1) Measure density value on the steps after printing out 17-step sensitometric pattern of the Check density program. (2) In the same way, measure density values after amending density by using Adjust density program If they are exceeding allowable error limit. Results : In case of Check density program, the exceeding limit rates of Density difference(DD) and Middle density(MD) are: FL-IM3543 DD=75%. MD=72.5%, FL-IMD DD=0%. MD=30.8%(14.5%) After amending density by using Adjust density program, the exceeding limit rates of all both Laser imager were zero percent. The standard deviations are show lower FL-IM D than FL-IM3543 on the Check density control chart, but higher on the Adjust density control chart. Conclusion : (1) Check density variations by printingout sensitometric pattern extending once a week at least for quality control of the Laser imager. (2) In case of a dusty place, check the Laser beam transmission after cleaning Laser optical unit extending once a month. (3) Be sure to measure and check density values by using adjust density program if they are exceeding allowable error limit. (4) Maintain much better film density by performing the adjust density program even if check density values are existed within normal limit.

• 조명전기설비학회논문지
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• 제18권5호
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• pp.61-68
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• 2004

최근, 연료전지는 새로운 발전시스템으로 주목받고 있다. 연료전지는 저전압/대전류의 전기적 특성을 가진다. 그러므로 일반 상용부하에 적용하기 위해서는 승압용 컨버터와 인버터가 필요하다. 제안된 시스템은 연료전지의 전압을 380[Vdc]로 승압하기 위한 절연형 DC-DC 컨버터와 단상 220[Vac]로 변환하기 위한 LC 필터를 가진 PWM 인버터로 구성된다. 또한, 연료전지 발전시스템용 양방향 DC-DC 컨버터는 부하 응답 특성을 개선시키기 위하여 구성하였다. 본 논문에서는 풀 브리지 컨버터와 단상 인버터를 설계하고 제작하였으며, 시뮬레이션과 실험을 통해 연료전지 발전 시스템이 분산전원에 적용이 가능함을 보여준다.

• 한국콘텐츠학회논문지
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• 제11권6호
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• pp.90-97
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• 2011

최근 통신 기술과 인터넷의 발달로 인해 현대인들의 활동영역이 사이버 공간으로 넓어지면서 사이버공간에서의 자아 정체성과 윤리 문제가 중요하게 부각되고 있다. 이러한 시점에서 가상공간에서의 환몽 체험을 통해서 진정한 자아를 탐색하는 과정을 담은 우리 고전 소설 구운몽 은 현대 네티즌들에게 의미있는 시사점이 될 수 있다. "구운몽"의 주인공인 성진은 환생을 통해서 또다른 욕망의 주체인 팔선녀와 만남으로써 가상 세계를 체험하고 있다. 이를 통해 성진은 '진/가'의 이원적인 세계관을 극복하고 진정한 구도자로서의 자아를 확립하기에 이른다. "구운몽"의 환몽 체험은 현실 세계와 가상 세계를 구별하면서, 성진에게 양소유라는 새로운 자아를 부여한다. 성진은 아바타인 양소유를 통해서 자아의 한계를 초월하여 다중적인 주체로서 자신을 자리매김한다. 이러한 주체의 확장을 통해 결국 성진은 현실과 가상이 모두 깨달음을 위한 주체의 통합 과정임을 인식하게 된다. 이렇듯, "구운몽"은 컴퓨터와 같은 물리적인 매개로서가 아니라 인간의 정신으로 구성되는 가상 체험, 가상 세계를 이야기하고 있는 작품으로 이해된다. 현실 세계와 가상 세계의 대립, 충돌과 욕망의 무한성 속에서 갈등하는 현대 네티즌들에게 자아에 관한 성진의 깨달음은 모순적인 상황을 해결할 수 있는 열쇠가 될 수 있을 것이다.

• Applied Biological Chemistry
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• 제31권4호
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• pp.331-338
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• 1988

칡뿌리로 부터 칡뿌리 acetone분말을 제조하고 polyphenol oxidase를 추출, 정제하여 정제효소의 효소학적 특성을 검토하였다. 조효소는 DEAE-Cellulose, DEAE-Sephadex A-50, Sephadex G-100 column chromatography에 의하여 정제되었으며, 정제효소의 비활성은 94배, 정제수율은 45.4%이었다. 정제효소는 catechol 및 pyrogallol에 대하여 감한 친화성을 나타내었으며, km 값은 catechel을 기질로 하였을 때 16.67mM이었다. 작용 최적 pH는 7.5, 최적온도는 $50^{\circ}C$에서 가장 잘 작용하였고 1mM L-ascorbic acid, sodium bisulfite, EDTA, KCN 및 $Fe^{3+}$ 이온에 의하여 심한 저해를 나타내었으며, $Zn^{2+}$ 이온을 약 1.7배 정도의 활성을 증가시켰다. 조효소액을 전기영동하여 catechol로 활성염색 하였을 때 5개 isoenzyme이 확인되었으며 그 중 분자량 35,000의 것이 가장 강한 활성을 나타내었다.