• 한국산림과학회지
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• 제83권4호
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• pp.486-497
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• 1994

대기오염물질(大氣汚染物質)이 사상공단(沙上工團) 주변(周邊)의 해송림(海松林)에 미치는 영향(影響)을 알아보기 위하여 공단주변(工團周邊)의 해송림(海松林)에서 가시적(可視的)인 피해(被害), 엽내(葉內) 엽록소(葉綠素), 무기성분(無機成分) 및 오염물질(汚染物質) 등(等)을 분석(分析)한 결과(結果)는 다음과 같다. 1. 해송엽(海松葉)의 변색(變色)은 공단(工團) 주변(周邊)의 조사지(調査地)에서 심하게 나타났으며, 엽령(葉齡)이 증가(增加)될수록 심하게 나타났다. 피해도지수(被害度指數)는 공단(工團)에서 가까울수록 높게 나타났다. 2. 엽내(葉內) 수용성유황(水溶性硫黃) 함량(含量)은 전(全) 엽령(葉齡) 모두 공단(工團)에서 가까운 조사지(調査地)에서 높았으며, 전(全) 조사지(調査地)에서 대조구(對照區) 보다 높게 나타났다. 3. 엽록소(葉綠素) a의 함량(含量)은 공단(工團)에서 가까운 조사지(調査地)에서 현저히 감소(減少)되었으며, 엽령(葉齡)이 증가(增加)될수록 높게 나타나 엽록소(葉綠素) a는 대기오염(大氣汚染)에 의해 영향(影響)을 많이 받고 있음을 알 수 있었다. 엽록소(葉綠素) b의 함량(含量)은 많은 조사지(調査地)에서 대조구(對照區)와 차이(差異)가 없었다. 한편 전체(全體) 엽록소(葉綠素)와 엽록소(葉綠素) a와 b의 함량비(含量比)는 엽록소(葉綠素) a의 감소(減少)로 인하여 공단(工團)에서 인접(隣接)한 조사지(調査地)에서 감소(減少)하는 경향(傾向)이 있었다. 4. 엽내(葉內) 인산(燐酸)의 함량(含量)은 엽령(葉齡)이 증가(增加)될수록 공단(工團)으로 부터 더 먼 지역(地域)까지 감소현상(減少現狀)이 나타났으며, 칼슘의 함량(含量)은 전(全) 엽령(葉齡)에서 공단주변(工團周邊) 조사지(調査地)에서 감소(減少)되었다. 5. 피해도지수(被害度指數)와 엽록소(葉綠素) a, 전체(全體) 엽록소(葉綠素), 엽록소(葉綠素) a와 b의 함량비(含量比), 칼슘의 함량간(含量間)에는 부(否)의 상관(相關)이 있었고, 피해도지수(被害度指數)와 수용성유황(水溶性硫黃)의 함량(含量) 간(間)에는 정(定)의 상관(相關)이 있었다. 6. 해송(海松)의 피해도지수(被害度指數), 수용성유황(水溶性硫黃) 함량(含量), 엽록소(葉綠素) 함량(含量), 무기성분(無機成分) 함량(含量) 등에 의해 피해지역(被害地域)을 구분(區分)하기 위해 Cluster분석(分析)을 실시(實施)한 결과(結果), 공단주변(工團周邊) 지역(地域)(1-8 조사지(調査地)), 중간(中間) 지역(地域)(9, 10, 11, 12, 15, 17 조사지(調査地)), 대조구(對照區)를 포함한 비교적(比較的) 먼 지역(地域)(13, 14, 16, 18, 19 조사지(調査地)와 대조구(對照區))으로 크게 3개의 작은 집단(集團)으로 구분(區分)할 수 있었다. 7. 가시적(可視的) 피해(被害)를 받은 해송엽(海松葉)의 횡단면(橫斷面)을 관찰(觀察)한 결과(結果), 엽조직(葉組織)은 엽육세포(葉肉細胞)와 수지구(樹脂溝) 주변(周邊)의 후막세포(厚膜細胞)와 내피층(內皮層)이 부분적(部分的)으로 파괴(破壞)되었다.

• 한국건축시공학회지
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• 제19권4호
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• pp.361-371
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• 2019

2017년 전체 산업에서 건설업의 재해자와 사망자의 비중은 각각 25.2%, 29.6%로 가장 높은 실정이다. 특히 건축 현장의 안전사고가 지속적으로 증가하고 있어 경제적 손실이 매우 크다. 따라서 본 연구는 건축공사의 안전사고를 예방하기 위하여 공종별 안전위험도 평가지수를 개발하였고, 그 주요 연구결과는 아래와 같다. 첫째, 건축공사 현장의 안전사고와 관련된 위험요인을 설문조사와 면담조사를 통하여 17개 요인을 도출하여, 전문가 자문회의를 걸쳐 9개 항목(공종, 공사종류, 공정율, 계약금액, 층수, 공사기간, 안전교육, 현장근무일수, 날씨)을 제안하였다. 둘째, 건설현장의 안전사고 위험도 평가지수는 안전사고의 발생 비율과 발생강도를 토대로 공종별 평가지수 산정모델을 개발하였다. 셋째, 본 연구는 위험도 평가지수 평가모델을 검증하기 위하여 건설재해사고 통계자료를 조사 및 분석하여, 공종별 건설안전 위험 평가지수를 도출하였다. 또한 본 연구에서는 건설안전사고로 인한 인적손해를 사망자와 부상자로 구분하여 위험강도를 산출하였다. 공종별 안전사고 발생빈도와 발생강도에 따른 위험평가지수와 도출된 위험요인은 향후 건설안전 위험도 예측시스템 개발시 기초자료로 활용될 수 있을 것으로 기대된다.

• 한국보육지원학회지
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• 제7권4호
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• pp.301-324
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• 2011

본 연구는 1차 평가인증지표를 토대로 평가인증을 받은 어린이집에 근무하는 보육교사를 대상으로 평가인증 경험에 따라 평가인증의 운영과 제2차 평가인증 지표의 실현성에 대한 인식에 차이가 있는지를 살펴보았다. 이를 위해 1차 평가인증에 통과한 40인 이상 어린이집에 근무하는 보육교사 193명을 대상으로 설문조사를 하였으며, 빈도분석, $X^2$ 검증, t-검정을 이용하여 분석하였다. 그 결과 보육교사의 평가인증 경험에 따른 평가인증제 운영에 대한 인식의 차이는 평가인증통과 후 사후 유지관리에 중요하다고 생각하는 사항에서만 나타났다. 인증경험이 없는 교사는 '시설장 및 보육교사의 전문성 향상을 위한 지속적인 교육'을, 인증경험이 있는 교사는 '보육교사의 의지 및 지속적 근무'를 가장 중요하게 인식하는 것으로 나타났다. 교사의 평가인증 경험에 따른 인증지표의 실현성에 대한 인식은 보육환경 영역의 '예술활동자료', 운영관리 영역의 '보육시설의 운영방침 및 정보 안내', '원아에 대한 관리', '종사자의 근로계약', 건강과 영양 영역의 '식자재, 조리 및 배식과정의 위생적 관리', '아프거나 다친 영유아의 보호', '영유아와 종사자의 건강관리', '영유아를 위한 간식', 안전영역의 '영유아의 안전한 인계과정' 항목에서 평가인증 경험이 있는 보육교사가 경험이 없는 교사에 비해 실현성이 높다고 인식하는 것으로 나타났으며, 전반적으로 모든 영역에서 평가인증 참여경험이 있는 교사가 제2차 평가인증지표의 실현성을 높게 인식하는 것으로 나타났다.

• Safety and Health at Work
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• 제4권1호
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• pp.63-70
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• 2013

Objectives: This study is planned to assess the trend of occupational injuries in Korea from 2001 to 2010. Methods: Ten years of occupational injuries, from 2001 to 2010, were analyzed in order to investigate the changing profiles according to the various characteristics of injuries; economic sectors, age of the injured, and type of injuries. The changing profile of occupational injuries was investigated by comparison with an index-created relative value based on the number of cases of reference category. Results: The fatalities of construction, forest, agriculture, and service show the increasing trend. The nonfatal occupational injuries of the manufacturing sector were higher than those of other sectors in every year but the fatal occupational injuries of construction workers were higher than those of the manufacturing sector. Occupational injuries occurring due to amputation and those of slip and trip increased. The number of occupational injuries for the worker groups of 24 years old and below decreased and 45 years old and above increased. In comparison to the figure of fall from height, the figures of slip and trip or caught in equipment are higher in every calendar year. Conclusion: This study find out construction, forest, agriculture, and service sectors, aged worker with 45 years old and over can be target population for the strategies of occupational safety.

• 재활간호학회지
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• 제20권1호
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• pp.33-41
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• 2017

Purpose: This study is a descriptive study to analyze the relationship between the cognitive function, body image and pain, and the influencing factors on the daily life performance of brain injured patients. Methods: The study subjects were 119 inpatients with brain injury who gave informed consent. The activities of daily living (ADLs), cognitive function, pain and body image were measured by Modified Barthel Index (K-MBI), K-MMSE (Mini-Mental State Examination), Visual Analog Scale (VAS), Semantic Differential Method (SDM), respectively. Results: ADLs was significantly associated with body image, cognitive function, and pain. Multiple regression analysis showed that paralysis, consciousness, cognitive function, and pain were significant factors influencing ADLs. Overall, approximately 48% of total variability in the ADLs could be explained by the 4 variables ($R^2=.477$, p<.001). Conclusion: To improve ADLs of brain injury patients, a deeper understanding of paralysis, consciousness, cognitive function, and pain of patients is required and active nursing invention should be conducted.

• Archives of Plastic Surgery
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• 제38권6호
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• pp.836-844
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• 2011

Purpose: Hands are the chief organs for physically manipulating the environment, using anywhere from the roughest motor skills to the finest, and since the fingertips contain some of the densest areas of nerve endings on the human body, they are continuously used organ with complex functions, and therefore, often gets injured. To prevent any functional loss, a detailed anatomical knowledge is required to have a perfect surgical treatment. Also it is necessary to have a thorough understanding of arrangements of the human extensor tendons and intertendinous connections when tenoplasty or tendon transfer is required. We performed a study of the arrangements of the human extensor tendons and the configuration of the intertendinous connections over the dorsum of the wrist and hand. Methods: A total of 58 hands from Korean cadavers were dissected. The arrangements of extensor indicis proprius, extensor digitorum communis, and extensor digiti minimi tendons and intertendinous connections were studied. Results: The most common distribution patterns of the extensor tendons of the fingers were as follows: a single extensor indicis proprius (EIP) tendon which inserted ulnar to the extensor digitorum-index (EDC-index); a single EDC-index; a single EDC-middle; a double EDC-ring; an absent EDC-little; a double extensor digiti minimi (EDM), a single EDC-index (98.3%), a single EDC-middle (62%), a double EDC-ring (50%), and an absent (65.5%) or a single (32.8%) EDC-little. A double (70.6%) EDM tendons were seen. Intertendinous connections were classified into 3 types: type 1 with thin filamentous type, type 2 with a thick filamentous type, and type 3 with a tendinous type subdivided to r shaped 3r type and y shaped 3y type. The most common patterns were type 1 in the 2nd intermetacarpal space, type 2 in the 3rd intermetacarpal space, and type 3r in the 4th intermetacarpal space. And in the present study, we observed one case of the extensor digitorum brevis manus (EDBM) on the boht side. Conclusion: A knowledge of both the usual and possible variations of the extensor tendon and the intertendinous connection is useful in the identification and repair of these structures.

• 대한한의학회지
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• 제31권3호
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• pp.79-97
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• 2010

Background: Peripheral nerve injuries are commonly encountered clinical problems and often result in severe functional deficit. Bee venom acupuncture has traditionally been used to treat several inflammatory diseases and chronic pain conditions. Objectives: The aims of this study were to compare the effects of bee venom (general bee venom, BV) and sweet bee venom (allergen-removed bee venom, SBV) acupuncture on the recovery rate of locomotor function, the expression of brain-derived neurotrophic factor (BDNF) in the sciatic nerve, and the expression of c-Fos in the brain following sciatic crushed nerve injury in rats, and to evaluate differences due to administration areas. Method: Walking track analysis, Western blot for BDNF and tyrosine receptor kinase B (TrkB), and immunohistochemistry for c-Fos were performed. In this study, comparative analyses of the effects of BV and SBV acupuncture in relation to administration sites, contralateral side or ipsilateral side, were conducted. Results: In the present result, sciatic function index (SFI) in walking track analysis significantly decreased following sciatic crushed nerve injury. The expressions of BDNF and TrkB in the sciatic nerve increased after induction of sciatic crushed nerve injury. C-Fos expression in the ventrolateral periaqueductal gray (vlPAG) and paraventricular nucleus (PVN) also increased. BV and SBV acupuncture treatment improved the SFI in walking track analysis. Treatment with SBV at 1mg/kg showed more potent enhancing effect on SFI compared to BV. Treatment with 1mg/kg BV or 1mg/kg SBV acupuncture suppressed the BDNF and TrkB expression in the sciatic nerve. BV and SBV acupuncture treatment also suppressed c-Fos expression in the PVN and vlPAG regions. Treatment with SBV at 1mg/kg showed more potent suppressing effect on c-Fos expression compared to BV when injected into the contralateral side of the injured nerve. Generally we could not find significant difference in the effects between contralateral side and ipsilateral side of the injured nerve. Conclusion: We have shown that BV and SBV acupuncture treatment can be used as the effective therapeutic modality to ameliorate the symptoms of sciatic crushed nerve injury.

• Korean Journal of Radiology
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• 제24권10호
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• pp.1017-1027
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• 2023

Objective: The assessment of cortical integrity following renal injuries with planar Tc-99m dimercaptosuccinic acid (DMSA) scintigraphy depends on measuring relatively decreased cortical uptake (i.e., split renal function [SRF]). We analyzed the additive values of the volumetric and quantitative analyses of the residual cortical integrity using single-photon emission computed tomography (SPECT) compared to the planar scintigraphy. Materials and Methods: This prospective study included 47 patients (male:female, 32:15; age, 47 ± 22 years) who had non-operatively managed renal injuries and underwent DMSA planar and SPECT imaging 3-6 months after the index injury. In addition to planar SRF, SPECT SRF, cortical volume, and absolute cortical uptake were measured for the injured kidney and both kidneys together. The correlations of planar SRF with SPECT SRF and those of SRF with volumetric/quantitative parameters obtained with SPECT were analyzed. The association of SPECT parameters with renal function, grades of renal injuries, and the risk of renal failure was also analyzed. Results: SPECT SRF was significantly lower than planar SRF, with particularly higher biases in severe renal injuries. Planar and SPECT SRF (dichotomized with a cutoff of 45%) showed 19%-36% of discrepancies with volumetric and quantitative DMSA indices (when dichotomized as either high or low). Absolute cortical uptake of the injured kidney best correlated with glomerular filtration rate (GFR) at follow-up (ρ = 0.687, P < 0.001) with significant stepwise decreases by GFR strata (90 and 60 mL/min/1.73 m²). Total renal cortical uptake was significantly lower in patients with moderate-to-high risk of renal failure than those with low risk. However, SRF did not reflect GFR decrease below 60 mL/min/1.73 m² or the risk of renal failure, regardless of planar or SPECT (count- or volume-based SRF) imaging. Conclusion: Quantitative measurements of renal cortical integrity assessed with DMSA SPECT can provide more clinically relevant and comprehensive information than planar imaging or SRF alone.

• The Korean Journal of Physiology and Pharmacology
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• 제4권3호
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• pp.219-226
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• 2000

In order to elucidate the role of platelet activating factor (PAF) in the acute lung injury induced by endotoxin (ETX), activities of phospholipase A2, lyso PAF acetyltransferase and oxidative stress by neutrophilic respiratory burst were probed in the present study. To induce acute lung injury, $100\;{\mu}g$ of E.coli ETX (type 0127; B8) was instilled directly into the tracheae of Sprague-Dawley rats. Five hours after the ETX instillation, induction of acute lung injury was confirmed by lung leak index and protein contents in the bronchoalveolar lavage (BAL) fluid. At the same time, lung phospholipase A2 (PLA2) activity and expression of group I and II secretory type PLA2 were examined. In these acutely injured rats, ketotifen fumarate, known as lyso PAF acetyltransferase inhibitor and mepacrine were administered to examine the role of PAF in the pathogenesis of the acute lung injury. To know the effect of the ETX in the synthesis of the PAF in the lungs, lyso PAF acetyltransferase activity and PAF content in the lungs were measured after treatments of ETX, ketotifen fumarate and mepacrine. In addition, the role of neutrophils causing the oxidative stress after ETX was examined by measuring lung myeloperoxidase (MPO) and enumerating neutrophils in the BAL fluid. To confirm the oxidative stress in the lungs, pulmonary contents of malondialdehyde (MDA) were measured. After instillation of the ETX in the lungs, lung leak index increased dramatically (p＜0.001), whereas mepacrine and ketotifen decreased the lung leak index significantly (p＜0.001). Lung PLA2 activity also increased (p＜0.001) after ETX treatment compared with control, which was reversed by mepacrine and ketotifen (p＜0.001). In the examination of expression of group I and II secretory PLA2, mRNA synthesis of the group II PLA2 was enhanced by ETX treatment, whereas ketotifen and WEB 2086, the PAF receptor antagonist, decreased the expression. The activity of the lysoPAF acetyltransferase increased (p＜0.001) after treatment of ETX, which implies the increased synthesis of PAF by the remodelling of lysoPAF in the lungs. Consequently, the contents of the PAF in the lungs were increased by ETX compared with control (p＜0.001), while mepacrine (p＜0.001) and ketotifen (p＜0.01) decreased the synthesis of the PAF in the lungs of ETX treated rats. The infiltration of the neutrophils was confirmed by measuring and enumerating lung MPO and the neutrophils in the BAL fluid respectively. Compared with control, ETX increased lung MPO and number of neutrophils in BAL significantly (p＜0.001) whereas mepacrine and ketotifen decrerased number of neutrophils (p＜0.001) and MPO (p＜0.05, p＜0.001, respectively). The lung MDA contents were also increased (p＜0.001) by ETX treatment, but treatment with mepacrine (p＜0.001) and ketotifen (p＜0.01) decreased the lung MDA contents. Collectively, we conclude that ETX increases PLA2 activity, and that the subsequently increased production of PAF was ensued by the remodelling of the lyso PAF resulting in tissue injury by means of oxidative stress in the lungs.

• Journal of Chest Surgery
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• 제40권12호
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• pp.831-836
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• 2007

배경: 심장 손상은 외상으로 사망한 환자에서 가장 많이 간과되는 손상이다. 둔상이나 관통상으로 생존하는 환자는 드물며 그리고 발생률은 아직 명확하지가 않다. 많은 수의 환자에서 긴급 또는 응급수술을 요하며 또한 사망률이 매우 높다. 대상 및 방법: 1997년 2월부터 2005년 12월까지 흉부외상으로 심장손상을 입은 응급 흉부 절개술을 한 26명의 환자를 후향적으로 조사하였다. 결과: 남자가 17명, 여자가 9명이고 평균나이는 $45.3{\pm}16.2$세($17{\sim}80$세)였다. 13명(50%) 환자는 자동차 사고, 5명(19%)의 환자는 오토바이사고로 손상을 입었다. 6명(23%)의 환자는 칼에 의해, 2명(8%)의 환자는 작업 중 높은 곳에서 떨어져서 손상을 받았다. 손상 받은 심장은 우심방 12예(46%), 좌심방 1예(4%), 우심실 5예(19%), 좌심실5예(19%) 그리고 두 곳의 심장손상이 2예(7%)였다. 진단은 12예의 환자에서는 컴퓨터 단층촬영으로, 14예의 환자는 초음파를 이용하여 진단하였다. 입원에서 수술실까지 걸린 시간은 평균$89.2{\pm}86.7$분($10{\sim}335$)이었고, 평균 진단시간은 $51.3{\pm}13.6$분(5-280)이었다. 외상인자로 개정 외상 계수, 글라스고우 혼수 계수의 평균이 $6.7{\pm}0.8,\;12.8{\pm}2.8$이었다. 사망률은 12%였다. 결론: 심장손상으로 인한 사망률은 매우 높다. 높은 관심과, 적극적이고 신속한 진단, 그리고 즉각적이고 적절한 외과적인 치료가 환자의 생존율 높일 수 있다.