Correlation Between Primary Si and Silicide Refinement Induced by Ultrasonic Treatment of Multicomponent Al–Si Alloy Containing Ti, Zr, V, and P

Jae‑Gil Jung,Young‑Hee Cho,Tae‑Young Ahn,Jae‑Hee Yoon,Sang‑Hwa Lee,Jung‑Moo Lee 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.5

The correlation between primary Si and silicide refinement induced by ultrasonic treatment (UST) of multicomponent Al–Sialloy containing Ti, Zr, V, and P was investigated. UST significantly refined the primary Si phase owing to cavitation-inducedwetting and deagglomeration of MgAl2O4particles. Lowering the UST finish temperature caused deterioration of the degreeof primary Si refinement, instead leading to silicide refinement. Cavitation-induced silicide nucleation on wetted MgAl2O4consumed the MgAl2O4particles, particularly in the case of primary Si nucleation. Similarly, the formation of an AlP phaseon the silicide phase reduced the nucleation efficiency of the AlP phase. Poisoning of the MgAl2O4and AlP phases by thesilicide phase was responsible for the deterioration in primary Si refinement. Room-temperature tensile strength and hightemperatureelongation were increased by UST and were dependent on the size of primary Si.

2003년 국내 중증급성호흡기증후군 진료 현황 및 문제점 분석

이진수,김은실,정문현,백제중,정선화,안주희,최영화,이선희,고철우,김성범,김민자,박승철,기현균,송재훈,최상호,김양수,이상오,조용균,박영훈,정숙인,김연숙,이흥범,손창희,장성희,정희진,김우주 대한감염학회 2004 감염과 화학요법 Vol.36 No.3

목적 : 2002년 말 중국에서 SARS가 발생한 이후 국내에서도 2003년 10월까지 총 3명의 추정환자, 17명의 의심환자가 보고되었다. 향후 추가적인 SARS의 유행이 우려되는 상황에서, 그간의 SARS 환자 진료에 있어서의 실질적인 준비사항, 진료 현황 등에 대한 조사를 통해 문제점을 파악하여, 향후 더 나은 대비가 될 수 있도록 개선점을 제시하고자 하였다. 재료 및 방법 : SARS로 의심되는 환자를 진료 경험이 있는 병원의료진을 대상으로 2003년 10월에 설문조사를 실시하였다. 설문에는 SARS 환자 진료 시의 실질적인 조치, 진료 현황, 병실, 응급실 및 외래에서의 격리 시설과 준비사항, 보건당국의 관리와 지원에 관한 사항을 포함하였다. 결과 : 대상이 되는 22개 병원 중 17개(17/22, 77.2%) 병원이 설문에 응하였다. SARS 환자를 위한 격리실은 응급실, 외래, 일반병실 및 중환자실에서 각각 9개(9/17, 52.9%), 5개(5/17, 29.4%), 15개(15/16, 93.7%), 4개(4/16, 25%) 병원에서 음압처리가 되어있지 않은 일인실 혹은 다인실이 사용되었고, 1개(1/16, 6.3%) 병원에서만 일반병실에서 음압격리실이 운영되었다. 입원환자의 진찰 시 개인보호구의 착용은 거의 모든 의료기관에서 이루어졌다. 보건당국에서 SARS지정병원의 시설 등을 사전에 확인한 곳은 1곳(1/12, 8.3%)이였고, 14개 병원(14/15, 93.3%)에서는 보건당국에 의뢰한 검사결과를 통하 받지 못하였다. 결론 : 의료기관에서 SARS 환자용 격리실뿐만 아니라 기존의 격리실 설비 등이 미흡하였으며, 특히 중환자실 및 외래의 준비가 더욱 부족하였다. 보건당국의 의료기관에 대한 종합적인 지원이 부족하였고, 병원과의 원활한 연계가 잘 이루어지지 않았다. SARS 만이 아닌 격리를 필요로 하는 질환의 적절한 진료를 위해 향후 병원 시설의 정비와 정부차원에서의 보다 구체적이고 실질적인 대책마련이 필요하다. Background : There was an worldwide outbreak of the Severe Acute Respiratory Syndrome (SARS) originated from China in late 2002. During that period three cases of suspected SARS and 17 cases of probable SARS were reported in Korea. With the concerns about the reemergence of SARS-coV transmission, it is important to be prepared for any possibility. So, this study is aimed to analysis the past measures in managing SARS and propose the amendatory plans to improve the preparedness. Materials & Methods : Questionnaires were collected among clinicians with any experience in managing the probable or suspected SARS cases in Oct. 2003. 17 out of 22 hospitals responded to the questionnaire. The contents in the questionnaire were practical activities, personal equipments, response plans, isolation facilities in emergency centers, outpatient clinics, general wards and intensive care units, and relationship with the public health department. Results : The dedicated isolation rooms in emergency centers, outpatient clinics, general wards, and intensive care units were prepared in 9 (9/17, 52.9%), 5 (5/17, 29.4%), 15 (15/16, 93.7%), and 4 (4/16, 25.0%) hospitals, respectively. Except for one hospital that newly made negative pressure room for SARS, single or multi-bed rooms without airborne infection control were used in all the other hospitals. The personal precaution principles were kept quite well in general wards. Before the designation of SARS hospital by the public health department prior evalution to see if the hospital was suitable for managing SARS was conducted in only 1 (1/12, 8.3%) hospital. The results of laboratory diagnosis were reported back in 1 (1/15, 6.6%) hospital. Conclusions : The isolation facilities which can control airborne infection were almost deficient not only for SARS but also for other respiratory transmissible diseases. For the infection control of transmissible diseases including SARS, more investment is needed on medical facilities and comprehensive support from the public health department required.

히스토아크릴을 이용한 십이지장 궤양 출혈의 지혈 후 발생한 급성췌장염

유재훈,문원,노지훈,구동영,조영화,김기수,윤준모 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.1

Upper gastrointestinal bleeding is common and potentially life threatening medical emergency. Emergency endoscopy is the first choice of diagnostic and treatment measure for patients with active upper gastrointestinal bleeding. Histoacryl should be considered a second-line treatment modality when conventional treatments were failed. However, it might cause several complications. Herein, we report a case of acute pancreatitis developed after histoacryl injection therapy for active duodenal ulcer bleeding. A 71-year-old man was admitted with melena and hematemesis. On emergency endoscopy, a 2 cm sized active ulcer with bleeding from an exposedvessel was seen at the duodenal bulb. Attempts to arrest the bleeding with hemoclipping and submucosal epinephrine injection were tried, but failed. We changed the method to endoscopic histoacryl injection, and obtained hemostasis immediately. A few hourslater, after successful hemostasis, patient complained diffuse abdominal pain. Ultrasonography revealed hyperechoic heterogenous diffuse pancreatic enlargement and right pararenal space fluid collection, this ultrasonographic findings and elevated serum pancreatic enzymes are compatible with acute pancreatitis.

배양상태의 흰쥐 뇌하수체 앞엽에서 Neuropeptide Y 함유세포에 관한 면역조직화학적연구

이화영,김순회,이희래,어환,이왕재,백상호,이병란 대한해부학회 1996 Anatomy & Cell Biology Vol.29 No.3

가로수관련 자치법규 현황 및 개선방향

김재화 東亞大學校 建設技術硏究所 2004 硏究論文集 Vol.27 No.2

우리나라의 현행 법률중 가로수에 관한 규정은 대단히 취약한 실정이다. 「도로법」과「 농어촌도로정비법」 등은 가로수를 도로의 부속물로 규정하고 있으며,「도로의유지 · 보수 등에 관한 규칙」은 가로수의 식재위치와 보호 등에 관한 기본적언 사항만을 규정하고 있을 뿐이다. 즉, 가로수를 경관적이거나 생태적인 측면에서 접근하지 않고 시설물중 하나로 규정하고 있음을 알 수 있다. 또한, 건설교통부, 행정자치부, 환경부, 산림청 등의 관계행정기관에 대한 민원검색결과 가로수에 관한 정책입안과 관리에 대한 주체도 모호한 실정이다. 고속도로와 극도 등을 관리하고 있는 중앙정부와는 달리 일부 지방자치단체에서는 가로수의 조성과 관리에 관한 조례와 규정등을 통해 법적인 문제점을 상당부분 보완하고 있는 것으로 나타났다. 그러나, 광역자치단체를 중심으로 일부에 국한되며 그 내용에 있어서도 부족한 부분이 많아 체계적인 개선이 요구된다. 따라서, 본 연구에서는 가로수에 관한 지방자치단체의 자치법규 현황을 분석하고 개선방향을 모색함으로써 미수립된 지방자치단체의 제도정비를 촉발할 수 있는 계기를 마련하고자 한다.

식도암 병기 결정에 있어서 초음파내시경의 유용성

이화영,김재준,김영호,성인경,손희정,이풍렬,고광철,백승운,이종철 大韓消化器病學會 1998 大韓消化器病學會誌 Vol.32 No.2

염색체 미세해부에 의한 신세포암 세포주 Caki-1의 표지 염색체 분석

신재섭,박수연,전용혁,박선화 大韓泌尿器科學會 1998 Korean Journal of Urology Vol.39 No.3

한국사회의 도덕적 타락과 기독교적 대응 방안 연구

노재화 성결대학교 성결신학연구소 1999 聖潔神學硏究 Vol.4 No.-

This is research on the Christian preventions for crimes of the whole Korean crisis, resulting from immoralities, irregurities, corruptions and illegalities. I questioned these crimes of moral corruption in Koran society, because of the falling down sence of value of korean people in the course of tranfered feudalistic society from industrial society in korea. This contents consist of the crisises of Korean society at the turning period, the occurrence of various crimes, will conclude of this paper. At the conclusion of this paper it will refer to the preventative measures of the Christian methods.

다결정 CdTe박막의 열자극 캐패시터 방전법에 의한 열자극분극 전류

김화민,김종재 대구효성가톨릭대학교 1998 연구논문집 Vol.57 No.2

Thermally stimulated depolarization current(TSDC) were measured by the method of thermally stimulated capacitor dicharge to investigate trap levels distributed within the band gap of the vacuum evaporated CdTe thin film. Capacitor were fabricated as two types of structures such as ITO/BaTiO₃/CdTe/Al and ITO/BaTiO₃/CdTe/BaTiO₃/Al in which the BaTiO₃layers were introduced to block the homocharge injection from the electrodes to the CdTe film. In this paper we report the trap depth due to the trap limited current observed in the TSDC spectra, and futhermore an important effect of applied voltages during charging, on TSDC peaks.

영아의 선천성심질환에 대한 개심술후의 집중치료에서 복막투석용 도관삽입의 의의

오재화,윤향석 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2

Background: We reviewed 5 years' experience with peritoneal drainage(PDr) in infants who underwent open heart surgery. The aim of this study was to investigate the effect of PDr on fluid balance and several parameters of intensive care. We hypothesized that PDr is safe and effective in infants with low-output cardiac failure after cardiac operations. Methods: Six(3.3%) of 60 consecutive infants who underwent open heart surgery required peritoneal dialysis(PD) during the PDr. Simple PDr was performed in remaining 54 infants. The silicone rubber PD catheter was inserted into the center of abdominal cavity just after the operation, and the subsequent PDr was maintained during the intensive care. Results: Early postoperative mortality in all in infants with congenital heart disease was 1.6%. Total amount of intake was 6.30±1.59 ㎖/㎏/hr, and total output was 6.95±2.32 ㎖/㎏/hr, urine output was 5.08±2.55 ㎖/㎏/hr, pleural fluid 0.78±0.52 ㎖/㎏/hr, peritoneal fluid 1.20±0.90 ㎖/㎏/hr. The ratio of the output to the intake(O/I) was 1.1. None of the complications required early termination of the drainage. Hemodynamics and pulmonary function were maintained steadily during the postoperative intensive care. Conclusions: The early institution of peritoneal drainage(PDr) in infants with congenital heart disease after cardiac operations not only removes fluid, thus easing fluid restriction, but may also improve cardiopulmonary function.