방사선사고에 대한 비상진료

장지영,Jang, Ji-Yeong 한국동위원소협회 2001 동위원소회보 Vol.16 No.3

시판되고 있는 유사마스크 제품의 여과효율성능 비교평가

장지영,김승원,Jang, Ji Young,Kim, Seung Won 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.3

Objectives: This study was designed to evaluate the filtration efficiencies and pressure drops of five commercial cloth masks (4 plate type, 1 cup type) in comparison to the performance of a class 1 disposable respirator (reference respirator). A further objective was to evaluate the effects of the number of layers and wash treatment independently on filtration efficiencies and pressure drops. Methods: Polydisperse NaCl aerosols were generated in an aerosol chamber and their concentrations were measured by an optical particle counter (OPC) in the size range of $0.3{\sim}10{\mu}m$ (five channels). Results: The filtration efficiencies of the five cloth masks and the reference respirator were D: 9.5%, C: 18.5%, E: 23.6%, A: 28.5%, B: 29.7% and R: 91.1%, respectively, and the pressure drops through them were C, D: 0.8 Pa, E: 1.7 Pa, B: 6.4 Pa, A: 42.7 Pa and R: 19.3 Pa, respectively. The filtration efficiencies of the cloth masks and reference respirator were below the class 1 respirator criterion (${\geq}94.0%$) of the Ministry of Employment and Labor (MOEL) and Ministry of Food and Drug Safety (MFDS). The pressure drops satisfied the class 1 respirator criterion (${\leq}70Pa$) of MOEL and MFDS. When the cloth masks were folded into two and four layers, the filtration efficiencies of cloth masks A, B, C, D (plate type) increased 1.7-4.6 times, and 2.3-6.8 times, respectively, compared to the efficiencies of the same products in a single layer. Pressure drops increased as the number of layers was increased. The filtration efficiency of cloth mask E with a liner was 1.3 times higher than that of the same mask without a liner, and the pressure drop was lower in the no-liner configuration. After a single washing, the filtration efficiencies of all the cloth mask products decreased 1.04-4.0 times compared to those of the same products intact. For the cloth masks C and E, their filtration efficiencies were significantly decreased after washing (p<0.05). The pressure drops of all cloth masks were 1.2-2.0 times lower after washing. Conclusions: The filtration efficiencies of the five cloth masks were below 30% and did not improve greatly by increasing the number of layers. After a single washing, their performances decreased. Considering the above and other issues identified with cloth masks, such as poor fit and stretched fibers through use, people should not expect protection against particulate matters from the cloth masks on the market.

골연골종으로 인한 과두절제 후 하악지 수직 골절단술 및 bone sliding을 통한 즉시 재건: 증례보고

장지영,오제경,차두원,백상흠,Jang, Ji-Young,Oh, Jae-Kyung,Cha, Du-Won,Baek, Sang-Heum 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.3

Osteochondroma is a common benign tumor of the axial skeleton, especially the distal metaphysis of the femur and proximal metaphysis of the tibia. However, it occurred rarely on the facial skeleton. The coronoid and condylar processes have been considered to be the most common sites of occurrence for osteochondroma of the facial skeleton. The first treatment of osteochondroma is condylectomy, whereas extirpation was done by excision with condyle salvage. Condylectomy presents decrease of vertical dimension, jaw deviation, malocclusion. So, reconstruction is need. Methods of reconstruction are as follows: no reconstruction, condyloplasty, discectomy, costochondral graft, discplication or coronoidectomy, eminoplasty, alloplastic spacer placement, Le Fort I level maxillary osteotomy, extraoral and intraoral vertical ramus osteotomy. This is a case report of a 28-year old woman who had facial asymmetry, malocclusion and temporomandibular joint pain. We obtained moderate functional and cosmetic results with surgical removal of the osteochondroma by condylectomy and concomitant reconstruction of condyle by vertical ramus osteotomy with sliding technique.

돋보기- 영등위 파문

장지영,Jang, Ji-Yeong 한국데이터베이스진흥원 2005 디지털콘텐츠 Vol.2 No.-

영상물등급위원회 비리가 지난달 16일 검찰에 적발됨에 따라 등급심사의 공정성에 문제를 제기하지 않을 수 없게 됐다. 더구나 영등위 수뢰파문이 전근대적인 심의시스템 때문에 야기됐다는 지적이 잇따르면서 민간자율심의에 대한 논의도 한층 무르익고 있다. 영등위 수뢰파문을 둘러싼 사건경과와 개선방향을 살펴봤다.

조립 가설기자재 품질평가 및 관리 시스템 개발 - 강관 비계, 시스템 비계, 시스템 동바리를 중심으로 -

장지영,이지연,김하윤,이준호,김준상,김정렬,김영석,Jang, Ji young,Lee, Ji yeon,Kim, Ha yoon,Lee, Jun ho,Kim, Jun-Sang,Kim, Jung-Yeol,Kim, Young Suk 한국건설관리학회 2022 건설관리 : 한국건설관리학회 학회지 Vol.23 No.5

Since assembled temporary equipment is widely used for construction work that should be carried out before this construction begins, it is essential to secure quality during assembly and prevent safety accidents caused by assembled temporary equipment after installation. However, it was investigated that most construction site managers are not aware of its importance, such as recognizing the quality management of assembled temporary equipment as a task of managing temporary structures that are dismantled after installation for this construction. The quality management work of assembled temporary equipment at the construction site is carried out in different ways for each construction site because there is no formalized procedure and the subject of performing. In addition, it is analyzed that the manager of the general construction company inspects and reflects the parts that need to be inspected without evidence, so transparency is not guaranteed and the result leads to a serious disaster. Therefore, the purpose of this study is to establish a document preparation-oriented system that provides systematic quality evaluation and management procedures for securing the quality of assembled temporary equipment, develops a checklist for quality evaluation and management, and supports history management on the web.

공랭식 VRF 시스템의 연속난방에 관한 연구

장지영(Ji Young Jang),이상헌(Sang Hun Lee),김병순(Byung Sun Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6

At certain outside air conditions, when air-source heat pump operates in heating mode, frost can form on the air-cooled heat exchanger, decreasing the heating performance. Conventionally, reverse-cycle defrosting (RCD) has been the common method of frost removal. But this method requires the interruption of heating during defrosting, as well as a period of time to reheat the cooled pipes of the indoor units after defrosting. In this study, a new technology called continuous heating was developed, which utilize only a hot gas bypass valve to remove the frost from the outdoor heat exchanger and thus enabling the supply of hot air to indoors without any interruption. For this, a new high temperature and low pressure gas bypass method was designed, which is differentiated from the common high pressure hot gas bypass methods by its use of low pressure. Various refrigerant mass flow distributions were examined, and the most effective defrosting mass flow was 50% in this case. Heating capacity was increased by 17% because of continuous heating, and the cumulated energy efficiency was increased by 8% compared to the traditional reverse cycle defrosting over 4 hours including two defrost operations. Also, cumulated energy efficiency was increased by 27% compared to electronic heaters that supply the same heating capacity during defrosting

GM-CSF가 방사선 치료시 발생한 호중구감소증에 미치는 영향

장지영(Ji Young Jang),최일봉(Ihl Bohng Choi),정수미(Su Mi Chung),김인아(In Ah Kim),계철승(Chul Seong Kay),김춘추(Chun Chu Kim),한치화(Chee Hwa Han),신경섭(Kyung Sub Shinn) 대한방사선종양학회 1995 Radiation Oncology Journal Vol.13 No.1

Purpose : To assess the efficacy of recombinant human granulocyte-macrophage colony-stimulating factor(GM-CSF) in the neutropenia by radiotherapy. Materials and Methods : Eleven patients with various solid tumor were treated with a daily subcutaneous dose of GM-CSF(3-7microgram/kg) for 5days during the radiotherapy. Before and during the course of the study all the patients were monitored by the recording of physical examination, the complete blood count with differential and reticulocyte count and liver function test. Eight patients received prior or concurrent chemotherapy. Results : In 10 patients, the neutrophilic nadir was significantly elevated and the lenght of time that patients had a neutrophil count below 10³/mm³, a threshold known to be critical to acquiring infective complications was shortened following GM-CSF injection. A significant rise (two fold or greater) of neutrophil count was seen in 10 of 11 patients. In most patients, discontinuation of GM-CSF resulted in a prompt return of granulocyte counts toward baseline. However the neutrophil count remained elevated over 10³/mm³ during radiation therapy, and radiotherapy delays were avoided. Other peripheral blood components including monocytes and platelets also increased after GM-CSF treatment. No significant toxicity was encountered with subcutaneous GM-CSF treatment. Conclusion : GM-CSF was well tolerated by subcutaneous route and induced improvement in the neutropenia caused by radiotherapy.

문맥 윤상 췌장 2예

장지영 ( Ji Young Jang ),정용은 ( Young Eun Chung ),강창무 ( Chang Moo Kang ),최성훈 ( Sung Hoon Choi ),황호경 ( Ho Kyoung Hwang ),이우정 ( Woo Jung Lee ) 대한소화기학회 2012 대한소화기학회지 Vol.60 No.1

Portal annular pancreas is one of the pancreatic fusion anomalies in which the uncinate process of the pancreas extends to fuse with the dorsal pancreas by encircling the portal vein or superior mesenteric vein. We report two consecutive patients with portal annular pancreas. The first case is a 71-year-old male patient who underwent a pancreaticoduodenectomy for intraductal papillary mucinous neoplasm in the head of pancreas. His preoperative computed tomography scan showed the suprasplenic type portal annular pancreas. The second case is a 74-year-old female patient who underwent a laparoscopic anterior radical antegrade modular pancreatosplenectomy (RAMPS) for pancreatic body cancer. In operative finding, portal confluence (superior mesenteric vein-splenic vein-portal vein) was encased with the uncinate process of pancreas in both cases. Therefore, they required pancreatic division at the pancreatic neck portion twice. During the postoperative period, grade B and A, respectively, postoperative pancreatic fistulas occurred and were controlled by conservative management. Surgeons need to know about this rare pancreatic condition prior to surgical intervention to avoid complications, and to provide patients with well-designed, case-specific pancreatic surgery. (Korean J Gastroenterol 2012;60:52-55)

백합 구근부패병 저항성 검정을 위한 기내 간편 검정법 개발

장지영(Ji-Young Jang),문기범(Ki-Beom Moon),하장호(Jang-Ho Ha),박지선(Ji-Sun Park),김미진(Mi-Jin Kim),전재흥(Jae-Heung Jeon),이긍주(Geung-Joo Lee),김현순(Hyun-Soon Kim) 한국원예학회 2015 원예과학기술지 Vol.33 No.6

토양 전염균인 Fusarium oxysporum f. sp. lilii(Fol)은 식물에 심각한 위협을 주는 균으로 특히 백합의 구근과 꽃에 심각한 영향을 준다. 따라서 저항성 품종의 육성이 중요시되고 있는데, 저항성 품종이 육성되기 위해서는 신속, 간편한 검정법 체계와 유전적 다양성이 요구되는 상황이다. 본 실험에서는 기내배양시스템을 이용하여 백합의 Fol에 대한 저항성 정도를 효율적으로 검정하는 방법을 확립하고자 하였다. 병원균의 배양조건, 병원균의 식물체 접종 농도, 대상 절편체 종류, 접종 후 적정 발병 기간 등과 같은 조건을 단독, 혹은 조합하여 실험 한 결과 다음의 기내검정조건을 확립하였다. Fol균을 6일 동안 PDA 배지에서 배양한 후 포자현탁액을 1.0 × 10⁴ spores·mL<SUP>-1</SUP> 농도로 조절하여 기내배양중인 식물체의 잎을 1.5 × 2.0㎠의 크기로 절단하여 25℃, 암조건에서 22시간 침지시켜 접종하였다. 접종이 끝난 잎절편체는 0.6% 한천배지에 치상하여 온도 25℃, 습도 50%, 16시간 광조건(광도 40μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>)을 유지하면서 병의 발달을 관찰하였다. 발병 정도를 지수화하여 통계처리를 하였다. 기내검정을 통하여 저항성 및 민감성으로 선발한 백합종들을 토양검정법으로 실험한 결과 동일한 저항성 정도를 얻을 수 있었으며, 이는 본 연구에서 확립한 Fol에 대한 구근부패병 기내검정법이 효율적으로 품종 선발에 이용될 수 있음을 보여준다고 하겠다. The soilborne fungus Fusarium oxysporum f. sp. lilii (Fol) is a serious threat to all lily cultivars, especially infecting bulbs and flowers. It has become increasingly important to develop varieties resistant against the bulb rot disease. Genetic diversity of cultivars and reliable screening methods are required for this purpose. Here, an efficient in vitro screening system for evaluating resistance to Fol in 38 in vitro-grown lily plants was investigated. Various factors including culture conditions of Fol, inoculum density, appropriate plant materials, inoculation method and duration, and incubation period of plant materials after inoculation were combined to optimize the screening method. As a result, we suggest optimal conditions for an in vitro screening system for the selection of Fol-resistant lily cultivars as follows. Fol was grown on potato dextrose agar (PDA) medium for 6 days at 25℃ in darkness and used as working inoculation. Spore suspensions were prepared (inoculum density: 1.0 × 10⁴ spores·mL<SUP>-1</SUP>), and then leaf segments 1.5 × 2.0 ㎠ were inoculated by dipping for 22 hours at 25℃ in dark. Later, leaves were cultured on 0.6% agar plates at 25℃ and 50% humidity with a photoperiod of 16 hours light/8 hours dark (fluence rate of 40 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>) to examine the progress of bulb rot. After 7 days, disease levels were classified into indices 1 (no symptom) to 6 (serious bulb rot). Soil inoculation of Fol carried out with resistant or susceptible lily cultivars that had been selected through in vitro screening confirmed the reproducibility of results. Therefore, the in vitro screening method established in this study is efficient and reliable for selection of lily cultivars resistant against bulb rot disease.

과학 교육과정 개정에 따른 첨단과학기술 내용 분석

장지영(Jang Ji young),오윤정(Oh Yoon jeong),최경희(Choi Kyung hee) 학습자중심교과교육학회 2010 학습자중심교과교육연구 Vol.10 No.3

본 연구에서는 중등 과학 교육과정 개정(제7차 교육과정, 2007 개정 교육과정, 2009 개정 교육과정)에 따라 첨단과학기술분야와 관련된 내용이 어떻게 다루어지고 있는지 살펴보기 위하여 6 첨단과학기술분야(6T; IT, BT, ET, ST, NT, CT)를 기 준으로 내용을 조사하고, 내용의 서술 범주를 분석하였다. 분석 결과, 교육과정이 개정될수록 첨단과학기술분야의 내용이 증가함을 알 수 있었다. 중학교 교육과정 보다 고등학교 교육과정에서 첨단과학기술분야의 내용을 다수 제시하고 있었으며, 각 교육과정마다 특정 첨단과학기술 영역의 내용을 강조하고 있었다. 또한 교육과 정이 개정될수록 첨단과학기술분야의 원리가 증가하고 첨단과학기술의 기초 및 영 향은 감소함을 알 수 있었다. 따라서 현재 논의 중에 있는 2009 개정 교육과정에 따 라 개발될 과학 교과서에서는 학생들이 흥미를 갖도록 첨단과학기술과 과학 교과 와의 연계성을 고려하여 학습자의 수준에 맞는 첨단과학기술 내용을 제시해야 할 필요가 있다. The study purported to examine the science content on advanced science technology across the 7th Curriculum and its revisions from 2007 to 2009. The contents were divided into 6 technology areas which are IT, BT, ET, ST, NT, and CT and within each category. And the format of the learning content was also analyzed. The results indicated that with more revisions, the content on the advanced science technology increased. High school text books deals more content on the advanced science and technology than the middle school text books, and each revisions had specific emphasis on various topics pertaining to the advanced science technology. Also along the revisions, the content on the principles of advanced science technology increased, and instead, its fundamental aspects and the consequences decreased. Therefore it is suggested that the 2009 revisions should incorporate learning content that can elicit students interest in science subjects by linking them with advanced science technology from the learner-centered stances.