• 한국산림과학회지
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• 제113권1호
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• pp.14-30
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• 2024

본 연구는 한국의 울주군에서 발생한 땅밀림지의 지질, 지형, 유효 토심, 토양경도, 전기비저항탐사, 지반조사를 통해 땅밀림 위험지 특성을 파악하여 땅밀림에 의한 인적, 물적 피해를 완화하기 위한 기초자료를 제공하기 위해 실시하였다. 이 지역은 2022년 도로 확장공사의 영향으로 땅밀림이 발생하였는데, 하층식생이 크게 발달하지 않은 경사지로 상단부는 강우 시 집수가 잘 되는 요형 지형으로 나타났다. 땅밀림지의 주 구성 암석은 셰일, 사암, 역암으로 구성되어 있으며 땅밀림지의 토양은 대조구의 토양보다 점토함량이 약 3.6배 많은 것으로 분석되었으며, 모래와 점토가 많고, 실트가 적은 결과로 전형적인 땅밀림 토양으로 나타났으며, 전기비저항 탐사결과 저비저항이상대가 나타나 지하수대가 형성되는 것으로 나타났다. 토양 경도는 대조구보다 땅밀림지가 낮았으며, 땅밀림지의 평균토심은 30.4 cm로 대조구 24.7 cm보다 깊은 붕적토 지역이었다. 이러한 땅밀림의 특징을 파악하여 효과적인 선제적 대응 체계와 모니터링 시스템 구축이 필요하다.

• 한국식품과학회지
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• 제45권1호
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• pp.104-110
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• 2013

본 연구에서는 딸기의 수확단계에서의 생물학적 위해요소를 조사하고 그 결과를 딸기 GAP 모델의 개발을 위한 기초자료로 제공하기 위해 수행하였다. 경남 서부에 소재한 딸기 농장 6곳(토경재배 3곳, 양액재배 3곳)에서 총 216점의 시료를 수집하여 위생지표세균, 병원성 미생물, 그리고 곰팡이에 대해 분석하였다. 일반세균과 대장균군의 경우 토경재배 농장에서는 각각 1.0-6.9와 0.4-4.6 log CFU/g(leaf, mL, hand or 100 $cm^2$) 수준으로, 양액 재배 농장에서는 각각 0.8-4.9 log와 0.2-2.6 log CFU/g(leaf, mL, hand or 100 $cm^2$)수준으로 검출되었고 대장균은 모든 시료에서 검출되지 않았다. 병원성미생물은 S. aureus가 작업자의 손에서 최대 3.3 log CFU/hand 수준으로 검출되었고, B. cereus가 토양과 작물, 개인위생에서 0.4-4.1 log CFU/g(hand or 100 $cm^2$) 범위로 검출되었으며, L. monocytogenes, E. coli O157:H7 및 Salmonella spp.는 검출되지 않았다. 곰팡이는 토경재배 농장과 양액재배 농장 각각 1.0-5.2와 0.2-4.4 log CFU/g(leaf, mL, hand or 100 $cm^2$) 수준으로 검출되었다.

• 대한영상의학회지
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• 제82권6호
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• pp.1493-1504
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• 2021

목적 관상동맥 칼슘스코어(coronary artery calcium score; 이하 CACS)를 측정하는 데 있어 비 조영증강 흉부 CT에서 16 cm 축상 촬영 기법의 유용성을 알아보고자 하였다. 대상과 방법 20명의 환자를 대상으로 16 cm 축상 촬영 기법을 이용한 비 조영증강 흉부 CT와 칼슘 스코어 CT를 전향적으로 시행하였다. 흉부 CT는 세 가지 절편 두께(0.625, 1.25, 2.5 mm)로 재구성하여, Agatston 방법을 통해 관상동맥 칼슘스코어를 측정하였다. 다양한 절편 두께의 비 조영증강 흉부 CT와 칼슘스코어 CT의 관상동맥 칼슘스코어를 비교하고, 단면 분석을 통해 CACS의 임상적 중요성에 대한 일치를 확인하였다. 또한 각각의 석회화 병변들을 위치와 크기로 나누어 비 조영증강 흉부 CT와 칼슘스코어 CT에서 일대일 비교를 시행하였다. 결과 2.5, 1.25, 0.625 mm 절편 두께의 흉부 CT와 칼슘스코어 CT의 CACS 상관 계수는 각각 0.9850, 0.9688, 0.9834였다. 흉부 CT와 칼슘스코어 CT 간의 CACS 차이는 0.625 mm에서 -21.4%, 1.25 mm에서 -39.4%, 2.5 mm 절편 두께에서 -76.2%였다. CACS 구간별 분석에서 절편 두께별로 16명(80%, 0.625 mm), 16명(80%, 1.25 mm), 13명(65%, 2.5 mm)의 환자가 관상 동맥 질환의 위험도 구간이 일치하였다. 관찰자 간 일치도는 모든 절편 간격에서 높게 나타났다. 세 절편 두께 중에서는 0.625 mm CT에서 석회화 병변에 대한 민감도가 가장 높았다. 결론 16 cm 축상 촬영 기법을 이용한 비 조영증강 흉부 CT에서 electrocardiogram 동기화 없이도, 0.625 mm 절편 간격에서 칼슘스코어 CT에서의 CACS와의 유사한 값을 얻을 수 있었다. 이를 통해 추가 방사선 노출 없이, 심혈관 질환 위험을 예측하는 데 도움이 될 수 있다.

• 한국구조물진단유지관리공학회 논문집
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• 제6권1호
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• pp.95-102
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• 2002

The flexural behavior of the reinforced concrete (RC) structure upgraded by external reinforcements was examined in this study. It is well known that the incorporation of carbon fiber sheet (CFS) with concrete is one of the most effective ways to strengthen the RC structure. Complete bonding is required between CFS and concrete in order to make the RC structure provide its full function until the time the Re structures serve. Many studies have reported that construction deficiencies have caused the debonding of the CFS from concrete before the RC structure with CFS reaches its ultimate capacity. This research took a systematic look at the failure mechanism, macroscopic load-deformation characteristics, the maximum load applied, and maximum bending moment when construction deficiencies exist. The results of the experiment conducted were compared with theoretically derived values. In the future, the results of this investigation will help minimize the factors of construction deficiencies, which may occur when CFS is used to reinforce a RC structure. The experiment was manipulated with steel reinforcement ratio and piles of CFS on a total of 14 beams ($20cm{\times}30cm{\times}240cm$). The results showed that internal moment capacity increased even when construction deficiencies existed. However, RC structures with CFS in the field still contain a considerable level of potential risks.

• 한국안전학회지
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• 제13권2호
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• pp.116-121
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• 1998

Various flammable vapors as energy source and raw material have been stored, transported in the industries, and accidental leakage of these vapors occurs occasionally. Without an appropriate protection system, flammable vapors can be ignited and serious damage results from them. To reduce the risk caused by explosion, we should know the explosion limit and explosion characteristics. In this study, the maximum explosion pressure, the maximum explosion pressure rise, the effect of temperature and mixing with other vapor were measured in a cylindrical vessel. Experimental results showed that maximum explosion pressure of flammable vapor was about 3.1~$4.2 kg/cm^2$ and it was reached 3.4 times faster than that at explosion limit. The lower explosion limit was coincided well with Le Chateilier's equation, however, upper explosion limit was not.

• Clinical and Experimental Pediatrics
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• 제53권9호
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• pp.852-854
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• 2010

Testicular torsion is rare in newborn infants. However, its frequency has increased, most of which are reported in full-term infants. We diagnosed and treated testicular torsion in an extremely low birth weight infant (ELBWI). A $2{\times}2cm$ red mass was palpable in the left groin of a 24-week-old, 745 g, male newborn at 23 days of age. Left testicular torsion was diagnosed, and emergent orchiopexy was performed. Careful physical examination is needed in cases suspicious of testicular torsion in ELBWIs with cryptorchidism. Moreover, early diagnosis and emergent exploration are necessary to prevent complications such as the risk of anorchia.

• 재활간호학회지
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• 제7권1호
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• pp.33-47
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• 2004

The purpose of this study was to investigate weight control practices and cardiovascular risk in middle-aged women. 304 middle-aged women were selected as subjects from thirties to fifthies living at J city in Chung-Buk Do. Data were collected using a questionnaire, anthropometric measurements, BP & total cholesterol level in serum from April 1, to June 30, 2003. The results of this study were as follows: The middle-aged woman's age is average $43.95{\pm}7.09yr$ and mean BMI(body mass index) was $23.54{\pm}3.09\;kg/m^2$. Underweight, normal weight, overweight, obese women were 3.0%, 39.5%, 27.9% and 29.6%respectively. Subjects perceived own as 'Slim' 5.9%, 'ordinary' 45.7%, 'Fat' 48.4%. Their weight perception coincide their own actual body weight but as many as 41.8% of overweight and 9.0% of obese perceived themselves as being 'ordinary'. Middle age women with past weight control experience were 55.6%, and only 35.5% was doing weight control at present. Of these subjects, 71.4% reported wanting to lose weight and the primary reason of weight control was to improve their appearance(39.53%). The most frequently reported weight control behavior was 'exercise' followed 'dieting', but 39.6% reported using 'diet food', 12.4% 'behavior modification', 12.4% 'fasting', and 'diet-drug'(3.6%) or 'smoking'(3.6%). Effective weight control methods were thought regular exercise(97.1%) & dieting (79.3%). And behavior modification(71.4%) or diet camp(60%) were effective, too. An average waist circumference was $79.80{\pm}9.47cm$, waist/hip ratio was $86.63{\pm}6.78$, waist/height ratio was $50.43{\pm}6.10$. In the index of abdominal obesity, 79.7 % of middle-aged women was waist/height ratio over 0.46, 65.3% was waist/hip ratio over 0.85, 28.4% was waist circumference over 85cm. There were significant differences in the degree of abdominal obesity according to age and BMI. In the index of cardiovascualr risk, 10.9% of middle aged women was systolic hypertension over 140mmHg, 18.7% was diastolic hypertension over 90mmHg and 10.6% was hypercholesterolemia over 200mg/dl. There was significant difference in systolic hypertension ratio according to age. There was significant difference in diastolic hypertension ratio according to age and obesity. There were significant differences in hypercholesterolemia accorting to obesity. The abdominal obesity indices and the levels of T-cholesterol in the serum, systolic and diastolic BP increased significantly according to age. T-cholesterol in serum was predicted 2.6% by waist/height ratio. And systolic BP was predicted 15.2% by waist/height, add BMI to 16.8%. Subject's diastolic BP was predicted 12.1% by BMI. Therefore waist/height ratio and BMI were significant factors for the predictors of cardiovascular risk. There was significant correlation between index of obesity and cardiovascular risk. T-cholesterol in serum had correlation with waist/eight ratio(r=0.174) and waist circumference(r=0.48). Systolic BP had correlation with waist/height ratio(r=0.387), and BMI(=0.371). diastolic BP correlation had correlation with BMI(r=0.343) and waist/height ratio(r=0.327). In conclusion, The prevalence of obesity was 29.6% in 304 cases, and increased as age after menopause increased. Middle-aged women's weight perception and actual BMI coincide but some of them did not. Trial to reduce weight was attempted. But most of them did not actually. Undesirable weight control method such as using drugs, fasting, smoking was used by some women. It is important to educate about health weight control methods and raise their awareness of exact body figures. High frequency of abdominal obesity in middle-aged women had correlation with hypertension and hypercholesterolemia. Abdominal index such as waist/height ratio, waist circumference, waist/hip ratio was used. Women's hypertension, hypercholesterolemia significantly related to body mass index and abdominal obesity.

• 대한토목학회논문집
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• 제40권4호
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• pp.429-435
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• 2020

북한은 2017년 6차 핵실험 이후 스스로 핵 무력의 완성을 선언하였다. 한반도 비핵화를 위한 국내외의 노력에도 불구하고 그 해결전망은 밝지 않다. 북한의 WMD위협을 억제하기 위한 정치·외교적 노력과 함께 유사시 예상되는 '재앙적 상황'에 대비한 사후관리 능력의 강화가 요구된다. 이에 따라 본 연구는 CBRN 위협에 대비한 사후관리 강화방안을 제시하기 위해 수행되었다. 연구모델은 국가 차원의 재난관리 계획발전모델 중 미 국토안보부가 채택하여 활용 중인 THIRA 프로세스를 일부 보완하여 활용하였다. 한국의 사후관리 체계는 재난에 대비한 위험관리와 위기관리를 포괄한다. 이 체계는 전·평시 CBRN의 확산 또는 사용의 억제, 위협의 대응, 예상피해 최소화 등을 목적으로 민·관·군 통합방위작전의 형태로 수행된다. 예방단계에는 CBRN의 개념과 사후관리 절차를 국가관리체계 속에 반영, 통합경보체계의 보완, 대피시설의 준비 그리고 통합훈련체계의 구축 등이 요구된다. 대비단계에는 관련 법규와 매뉴얼의 정비, 정부 조직의 정비와 수행절차의 발전, 통합대응이 가능한 현장 지원체계의 구축, 그리고 주기적인 훈련 등이 필수적이다. 대응단계에는 응급처치와 구호를 위한 의료지원체계의 정상가동, 제염시설의 설치 및 운영, 그리고 피해평가 및 통제지침의 발전이 중요하다. 복구단계에서는 안정화 평가 기준 및 절차의 발전, 피해복구에 필요한 자원의 확보 및 운용, 그리고 지역방위군과 향토예비군, 민방위가 연계된 지역피해복구 역량 강화가 필요하다.

• 약학회지
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• 제53권1호
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• pp.19-24
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• 2009

Metabolic syndrome, defined as the clustering of several metabolic disorders including obesity (waist circumference ${\geq}90$ if male or ${\geq}80$ if female, cm), dyslipidemia ($TG{\geq}150$ or HDL-C<40 if male or <50 if female, mg/dl), hypertension ($BP{\geq}130/85mmHg$) and hyperglycemia (fasting plasma $glucose{\geq}110mg/dl$), increases the cardiovascular risk of the general population. Recently, risk of this syndrome arises in young adults world widely. Therefore, we randomly selected and evaluated the risk of metabolic syndrome of total 43 people (group I-22, group II-21) for 2 years. Group I was 22 peoples (15 males, 7 females) with age of 22 thru 35 year old (average 28 year old) and group II was 21 people (19 male, 2 female) with age of 22 thur 32 years old (average 24 year old) in Cheongju area from March 1st thru 30th of 2008 in Cheongju area from September 1st thru 30th of 2007 in order to find out how serious this phenomenon is in young adult of Korea. 13.95% (n=7) of total people has a metabolic syndrome by NCEP/ATPIII definition among this group (group I-6, group II-1). Those of 6 have 3 or over risk factor for metabolic syndrome such as obesity, hypertension, fasting blood glucose and hypetriglyceridemia at the same time (group I-5, group II-1). Group I have more risk factor because of more higher age than group II. Therefore we need aggressively to monitor and provide them for early diagnosis, educational programs and assistance for lifestyle changes in order to prevent metabolic syndrome among young adults.

• 한국산업보건학회지
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• 제34권1호
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• pp.77-84
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• 2024

Objectives: Interventions promoting physical exercise and healthy habits in workplaces have been shown to be effective in reducing risk factors for metabolic syndrome. This study was conducted to examine the effects of an individualized conditioning exercise program of IT company office workers with or at higher risk of metabolic syndrome. Methods: A total of 444 IT company office workers with or at higher risk of metabolic syndrome participated in a 3-month conditioning exercise program. Body composition data using bioelectrical impedance analysis and cardiopulmonary data using cardiopulmonary exercise testing from 53 individuals (mean age: 34.8 ± 7.1 years, sex : 21% female, height : 170.4 ± 6.8 cm, weight : 75.2±12.2 kg, body mass index : 25.8±3.3 kg/m²) who have successfully completed pre-test, intervention, and post-test were analyzed. The 12 weeks intervention encompassed: (1) health counseling (2) supervised exercise(endurance-based, aerobic exercise, or circuit training once a week for 50 minutes at heart rate reserve(HRR) of 77-95%) (3) self-directed exercise and biweekly health screening checks. Results: The results indicated a significant decrease in body weight, body fat mass and body mass index, respectively. Moreover, VO₂peak, AT VO₂ and AT Time significantly improved, respectively. Resting blood pressure(SBP/DBP) showed positive changes but were not statistically significant. We observed the correlation between characteristics of participants and rate of changes in cardiopulmonary outcomes of participants, there are no significant correlation. These results indicate positive changes in body composition and cardiorespiratory fitness parameters following individualized conditioning exercise program. Conclusions: Individualized workplace exercise program for preventing metabolic syndrome can lead to improvements in body composition and cardiorespiratory fitness.