• 한국산업보건학회지
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• 제23권4호
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• pp.367-373
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• 2013

Objectives: Employee exposure record refers to a record containing information about environmental (workplace) monitoring or measuring of a toxic substance or harmful physical agent. The aims of this study were to examine problems related to exposure records and provide some amendments to the Korean Industrial Safety & Health Act for the effective management of chemical substances under the law. Methods: This study performed a literature search and review on legal provisions related to exposure records of a number of different countries, including Korea, the USA, Japan, EU, Germany, and the UK. They were compared and investigated and the amendment of articles was suggested. Results: The results of this study were provided as suggested amendments to the related act. There were a variety of ways of improvement, including a 30-year retention period and the introduction of new access methods, contents, transfer, and maintenance methods. All exposure data elements have to be standardized, including reference to a similar exposure group (SEG), sampling strategy, and circumstances of exposure (e.g., date, shift length, use of personal protective equipment, etc.). The SEGs are described by process, job, task, and environmental agent. Conclusions: This study is expected to provide for the amendment of the related act in order to ensure effective management of exposure records and is helpful for solving the cause and result of occupational disease by keeping exposure records according to the Industrial Safety & Health Act.

• 대한방사선기술학회지:방사선기술과학
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• 제44권4호
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• pp.399-407
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• 2021

This study discussed the validity and necessity of compulsory recording of radiographic examination performed by radiological technologist on patients in medical institutions related to radiation exposure. Also, this study provided reasonable evidence of radiographic examination related medical records can contribute to the improvement of public health. Based on overseas cases of implementing a radiographic examination record system, the essential items to be included in medical record are the exposure date, exposure time, exposure method, exposure conditions that is tube voltage, tube current. Name and license number of the radiological technologist who performed the examination should be include in medical record. It is expected that the medical record of the total amount of radiation exposure per year would be in giving the maximum benefit with the minimum exposure to the medical radiation examination of the patient. In addition, interventional radiography medical record should also include exposure time, type and dose of the contrast medium.

• Journal of Preventive Medicine and Public Health
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• 제46권5호
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• pp.226-236
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• 2013

Objectives: The aim of this study was to examine the levels of serum 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and evaluate their association with age, body mass index, smoking, military record-based variables, and estimated exposure to Agent Orange in Korean Vietnam veterans. Methods: Serum levels of TCDD were analyzed in 102 Vietnam veterans. Information on age, body mass index, and smoking status were obtained from a self-reported questionnaire. The perceived exposure was assessed by a 6-item questionnaire. Two proximitybased exposures were constructed by division/brigade level and battalion/company level unit information using the Stellman exposure opportunity index model. Results: The mean and median of serum TCDD levels was 1.2 parts per trillion (ppt) and 0.9 ppt, respectively. Only 2 Vietnam veterans had elevated levels of TCDD (>10 ppt). The levels of TCDD did not tend to increase with the likelihood of exposure to Agent Orange, as estimated from either proximity-based exposure or perceived self-reported exposure. The serum TCDD levels were not significantly different according to military unit, year of first deployment, duration of deployment, military rank, age, body mass index, and smoking status. Conclusions: The average serum TCDD levels in the Korean Vietnam veterans were lower than those reported for other occupationally or environmentally exposed groups and US Vietnam veterans, and their use as an objective marker of Agent Orange exposure may have some limitations. The unit of deployment, duration of deployment, year of first deployment, military rank, perceived self-reported exposure, and proximity-based exposure to Agent Orange were not associated with TCDD levels in Korean Vietnam veterans. Age, body mass index and smoking also were not associated with TCDD levels.

• 한국콘텐츠학회논문지
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• 제16권8호
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• pp.419-426
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• 2016

본 연구는 PET-MRI를 다루는 방사선 작업 종사자들의 효과적인 피폭관리와 경과시간(24시간, 1주, 2주, 3주, 4주) 및 자기장에 따른 개인피폭선량계의 변화를 분석하고자 하였다. 그룹화된 TLD에 열처리 수행 및 방사선을 조사하여 각기 다른 노출 환경에 보관한 후 실험이 종료되면 판독을 수행하여 글로우 곡선 및 피폭 방사선량의 변화 추이를 관찰하였다. 그 결과, 24시간 경과한 TLD 그룹에서 글로우 곡선 및 방사선량의 차이가 있는 것으로 확인되었다. 이는 자기장 노출로 인한 변화인 것으로 해석할 수 있다. 또한 자기장에 노출되지 않은 TLD 그룹의 평균 피폭 방사선량은 15.41 mSv로 나타났으며, 자기장에 노출된 TLD 그룹의 평균 피폭 방사선량은 14.83 mSv로 나머지 그룹보다 가장 크게 감소(3.80%)하는 경향을 나타냈다. PET-MRI실에서 근무하는 방사선 작업 종사자가 개인피폭선량계로 TLD를 사용하는 경우, 정기 판독주기에 맞게 TLD 판독 시 자기장 노출로 인한 실제 피폭 방사선량과의 차이는 크게 없을 것으로 판단되어지나 정기 판독이 아닌 중간 판독을 수행하였을 경우, 실제 피폭 방사선량보다 낮은 피폭선량 값을 나타낼 것이다.

• 한국방사선학회논문지
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• 제17권2호
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• pp.277-284
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• 2023

작업환경에 따라 방사선학적 위험성이 상이하므로 해당 업종 환경에 대한 분석을 통해 방호 수단과 정책을 개발해야 한다. 방사선을 이용하는 업종 분야에서의 특성을 평가하는 것은 해당 업종의 수치만을 보는 것이 아니라 다른 업종과의 비교 분석을 통해 수행되어야 한다. 본 연구는 업종별 방사선 피폭 기록 비교를 위해 부처별 종사자 피폭 기록으로부터 평가 인자를 도출하고 이를 상대적으로 평가할 수 있는 다각형 모델을 개발하여 8개 방사선 이용 업종에 대해 적용하였다. 2020년 방사선 피폭 기록을 바탕으로 다각형 모델을 적용하여 방사선 업종의 피폭 기록을 기반으로 특성을 비교 평가하였다. 이를 통해 다각형 모델의 유용성을 확인하였으며 업종에 대한 방호 정책 방안을 제안하였다.

• 한국환경보건학회지
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• 제35권6호
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• pp.461-467
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• 2009

Exposure analysis is a critical component of determining the health impact of pollutants. Global positioning systems (GPS) could be useful in developing time-location information for use in exposure analysis. This study compares four low cost GPS receivers with data logging capability (Garmin 60, Garmin Forerunner 201, GeoStats GeoLogger and Skytrx minitracker MT4100) in terms of accuracy, precision, and ease of use. The accuracy of the devices was determined at two known National Geodetic Survey points. The coordinates logged by the devices were compared when the devices were carried while walking and driving. The Garmin 60 showed better accuracy and precision than the GeoLogger when they were placed at the geodetic points. The Forerunner and Skytrx did not record when they were kept stationary. When the subject wore the devices while walking, the location of the devices differed by about 8 m on average between any two device combinations involving the four devices. The distance between the coordinates logged by the devices decreased when the devices were carried with their antennas facing the sky. All the devices showed similar routes when they were used in a car. All the devices except the Forerunner had satisfactory signal reception when they were worn and when they were carried in the car. The GeoLogger is less comfortable for the subject because of specific wearing requirements. This evaluation found that the Garmin 60 and the Skytrx may be useful in personal exposure analysis studies to record time-location data.

• Journal of Radiation Protection and Research
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• 제46권4호
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• pp.213-217
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• 2021

Background: Radiation exposure can occur as a result of occupational activities utilizing sources of radiation. The average level of occupational exposure is generally similar to the global average, but some workers receive more than this. In this study, the occupational exposure data for workers in Korea to check the recent trend of radiation exposure. Materials and Methods: The data collection and analysis are carried out by two separate periods based on the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) survey. One is the year 2003 to 2014 for a recent survey, and the other is 2015 to 2019. All available data were collected by annual reports from radiation dose registry organizations. Results and Discussion: The annual dose over the record level to the total workers did not change much compared with the total increasing number of workers in this period. The dose to the nuclear fuel cycle field has a tendency to decrease. It resulted from the efforts of radiation dose reduction with high technology introduced to this area. Also, it is important result that the radiation dose to the workers in radiography is remarkably reduced. Conclusion: The number of radiation workers and average doses were analyzed for occupational categories in Korea. It still needs cooperative efforts between the dose registry organizations for the efficient dose management of Korean radiation workers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1832-1853
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• 2018

The personal health record (PHR) system is a promising application that provides precise information and customized services for health care. To flexibly protect sensitive data, attribute-based encryption has been widely applied for PHR access control. However, escrow, exposure and abuse of private keys still hinder its practical application in the PHR system. In this paper, we propose a coordinated ciphertext policy attribute-based access control with user accountability (CCP-ABAC-UA) for the PHR system. Its coordinated mechanism not only effectively prevents the escrow and exposure of private keys but also accurately detects whether key abuse is taking place and identifies the traitor. We claim that CCP-ABAC-UA is a user-side lightweight scheme. Especially for PHR receivers, no bilinear pairing computation is needed to access health records, so the practical mobile PHR system can be realized. By introducing a novel provably secure construction, we prove that it is secure against selectively chosen plaintext attacks. The analysis indicates that CCP-ABAC-UA achieves better performance in terms of security and user-side computational efficiency for a PHR system.

• Journal of Nutrition and Health
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• 제44권2호
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• pp.171-180
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• 2011

식품으로부터의 유해물질 노출 평가를 위해 개발한 식생활 조사지의 신뢰도와 타당도를 평가하고자 216명을 대상으로 식생활 조사를 2회 반복 실시하여 비교하였고, 3일 식사기록 결과와도 비교하였다. 1) 식품 구매 시 주로 사용하는 용기에 대해 동일한 응답을 한 비율은 전체 식품 평균 73.5%였다. 상대적으로 포장 용기가 다양하지 않은 식품에 대한 구매 용기 응답 일치도가 높게 나타났으며, 판매 시 다양한 포장 용기를 사용하는 식품에 대한 구매 용기 응답 일치도는 낮게 나타났다. 2) 식품 보관 시 주로 사용하는 용기에 대한 응답 일치도는 평균 71.9%였다. 가공된 식품을 구매하여 보관하는 식품에 대한 보관 용기 일치도가 높았으며, 조리 후 보관을 하는 식품에 대한 용기 일치도는 낮게 나타났다. 3) 주로 사용하는 조리방법에 대한 응답의 일치도는 평균 83.0%였다. 조리방법이 다양한 식품들에 대한 일치도가 낮게 나타났으며, 조리하지 않고 그대로 먹는 식품에 대한 일치도가 높게 나타났다. 4) 식품섭취빈도조사를 2회 실시하였을 때, 평균 상관계수가 0.71 (range: 0.50~0.83)이었고, 2차 식품섭취빈도조사와 식사기록법의 식품 섭취 횟수의 평균 상관계수는 0.21(range: 0.04~0.48)이었다. 5) 식품섭취빈도조사와 식사기록법으로 산출된 각 식품군별 식품 섭취 횟수를 사분위수로 나누었을 때 모든 식품군의 일치 및 근접 일치도의 합은 50% 이상이었다. 6) 본 연구에서 개발한 조사지는 식생활 항목의 신뢰도가 높고, 섭취빈도의 순위를 분류하는 타당도가 높으므로, 대규모 역학조사에서 질적인 노출수준 평가에 활용할 수 있을 것으로 사료된다.

• Archives of Reconstructive Microsurgery
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• 제20권2호
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• pp.108-112
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• 2011

Purpose: Gracilis muscle free flap transplantation is chosen in the medium sized soft tissue defect and bone exposure from trauma and chronic osteomyelitis in the lower extremity. We set a study to search for gracilis free flaps to know whether symptoms were cured or recurred in patients that have passed over 10 years from flap transplantation. Materials and Methods: From August 1995 through September 2010, we have performed 28 cases of gracilis muscle free flap in the lower extremities. Ever since no case visited to demand any discomfort, breakdown or recurrence in the flap site on outpatient basis. We made a telephone call to patients or relatives documented in the medical record and only 2 cases visited outpatient department and 9 cases postponed the visit who satisfied with the final result but 17 cases had wrong telephone numbers. Causes, area of lower extremity, recipient vessels in the lower extremity, condition of the donor thigh and overall satisfaction of the flap transplantation in activities of daily living were investigated and written down in the medical record. Results: 11 cases were reviewed after average postoperative 13.7 years. Gracilis muscle flaps were not break down at the recipient site in all cases. The wound of donor thigh wound healed good and overall activities of daily living was satisfied in all cases. Conclusion: Gracilis muscle flaps which had performed and followed up average 13.7 years revealed confident in the medium sized soft tissue defect and bone exposure from trauma and chronic osteomyelitis in the lower extremity.