• Journal of Preventive Medicine and Public Health
• /
• 제29권3호
• /
• pp.657-668
• /
• 1996

경상남도 일부 지역에서 60세 이상 노인들의 MMSE에 의한 인지 장애 유병률을 조사하고 인지 장애에 영향을 미치는 요인들을 조사하여 다음과 같은 성적을 얻었다. 1. MMSE에 의한 인지 장애의 유병률은 35.9%로 남자에서 18.4%, 여자에서 45.2%였다. 2. 인지 장애 유병률은 여자에서 유의하게 높았고(p=0.02) 무학력자와 문맹자의 인지 장애 유병률이 통계적으로 유의하게 높았다(p=0.03). 3.성별과 교육 수준에 따른 층화 분석에서 알루미늄의 인지 기능에 대한 독성 효과와 칼슘의 보호 효과에 대한 전체적으로 일정한 경향은 관찰되지 않았다(p>0.05). 4. 최종 분석 대상자 전체에서 음용수 중의 알루미늄과 인지 기능 검사 점수간의 상관 계수는 -0.066으로서 미약한 음의 상관관계에 있었으나 통계학적인 유의성은 보이지 않았고(p=0.434), 칼슘과 MMSE 점수와의 관계에서도 기대했던 바의 양의 상관관계는 관찰할 수 없었다.

• Journal of Preventive Medicine and Public Health
• /
• 제28권3호
• /
• pp.715-725
• /
• 1995

산업재해성 요부손상 환자의 심리적 증상은 산업재해성 비요추 환자에 비하여 신체화 증상, 우울, 공포증, 정신증의 항목에서 통계학적으로 유의하게 높은 점수를 나타냈고, 직업과 관련없이 발생되어 의료보험으로 치료를 받는 비산업재해성 요부손상 환자에 비하여 신체화 증상, 우울, 불안, 편집증, 정신증의 항목에서 통계학적으로 유의하게 높은 점수를 나타냈다. 산업재해성 요부손상 환자의 심리적 증상은 휴직 기간과, 작업복귀 여부, 그리고 이 둘의 교호 작용이 유의한 설명력을 가지는데, 휴직 기간이 길수록 또 현재 작업에 복귀하고 있지 않았을 경우에 심리적 증상은 더 높은 점수를 나타내었다. 산업재해성 요부손상 환자에서 사회심리적 증상은 질병의 발생과 그것의 만성화에 따라 심화되며, 조기 작업복귀를 포함한 다차원적이고 포괄적인 재활 치료가 산업재해성 요부손상 환자의 관리에 성공적일 수 있을 것으로 생각된다.

• 한국학교ㆍ지역보건교육학회지
• /
• 제3권
• /
• pp.1-13
• /
• 2002

Female university students generally have a lower intake of nutrition compared to other age groups due to their adverse interests in their appearance. Drinking, smoking, too much weight control, accumulation of psychological and physical stress are causes of inadequate diet. The result is deterioration of hair health. Establishment of good diet and hair care is the foundation of a healthy hair in adulthood. For this reason, there is a great need for a healthy hair care. The data from a questionnaire survey was analyzed with 800 female undergraduate students responding. Seventeen universities were included in the study, 8 of which were from Seoul, 6 from other large cities and 3 from smaller towns. The objective of this study is to investigate the correlations of these factors and to provide preliminary data for developing an effective hair care education program. Results include the following: 1. Knowledge score of hair care based on general characteristics were higher for students in larger cites compare to small cites or regions. Also, students in higher academic year, more allowance, interest in their apparence and family income showed higher knowledge in this field. These factors had meaningful effect on the statistics of this study. 2. Attitude score towards hair care based on general characteristics were higher for students in larger cites compare to small cites or regions. Also, students in higher academic year, more allowance, interest in their apparence and family income showed higher knowledge in this field. These factors had meaningful effect on the statistics of this study. 3. Behavior score towards hair care was higher for students with greater family income, allowance, interest in appearance. These factors had meaningful effect on the statistics of this study. 4. The correlation study between knowledge, attitude and behavior showed that higher the knowledge and attitude, better the behavior. 5. The analysis of factors effecting hair care behavior showed that interest in health, acknowledgement of current hair condition, total family income were a viable factor in predicting hair care behavior. The predictability of regression model is 38.9 %($R^2$) Therefore, in order to maximize the hair care behavior, consistent and systematic study should be earned out to develope an effective education program to improve health interest.

• 대한토목학회논문집
• /
• 제40권3호
• /
• pp.285-294
• /
• 2020

본 연구는 실제 공용 중인 도로에서 약 20년에 걸쳐 지표투과레이더(GPR) 조사하고 도로포장의 전자기적 특성값인 유전상수와 감쇠에 대해 분석하였다. 그 결과로부터 도로포장의 일반적인 특성값 범위, 영향인자, 그리고 보정방법을 제시하였다. 비접촉식(Air-coupled) 1 GHz GPR 안테나로 조사한 아스팔트 포장의 일반적인 유전상수 범위는 4~7이었다. 콘크리트 포장의 경우 초기 재령에서는 유전상수가 매우 큰 값을 보였으나 재령이 경과할수록 급격하게 작아졌다. 재령 10년 이후에는 6~12 범위에 수렴하였다. 공기 중에 노출된 포장의 유전상수는 대기의 상대습도에 따라 증감하였으나 덧씌우기 포장층이 있는 경우 영향성은 1/8 수준으로 감소하였다. 레이더 파의 감쇠는 일반적으로 포장층의 두께가 증가할수록 커지게 되며, 손상 구간에서도 증가하였다. GPR 조사 시 기상조건에 따라서 포장의 전자기적 특성값이 달라질 수 있음을 확인하였으며, 특히 포장상태가 양호한 경우보다 손상이 발달한 상태에서 영향성이 크게 나타났다. 이밖에 동일한 주파수의 GPR 안테나로 조사한 경우에도 장비의 특성이 달라지면 결과값에 차이가 발생할 수 있었다. 따라서 GPR 조사는 도로에 대한 이해를 바탕으로 날씨의 변화가 거의 없고 도로표면이 깨끗한 상태에서 숙련자에 의해 실시하는 것이 필요하다. 또한 보정코어, 장비 보정 등을 통해 해석결과의 신뢰도를 향상하는 것이 요구된다.

• 한국치위생학회지
• /
• 제8권1호
• /
• pp.73-91
• /
• 2008

In order to investigate the complaint rates of subjective fatigue symptoms and the degree of job-satisfaction among dental hygienists based on their socio-demographic and job characteristics and to find out the factors related with subjective fatigue symptoms and job satisfaction. The study subjects were recruited from 274 dental hygienists who worked at dental hospitals and clinics in Daejon city and South Chungcheong Province during the period between Jan. 5 and Feb. 11, 2008. They were asked to complete the self-administered questionnaires asking about their socio-demographic characteristics. job characteristics. daily life styles, job satisfaction and subjective fatigue symptoms, and the major finding of the results were as follows : 1. The mean scores of job satisfaction were 3.12V0.47 of the total full scores(5.00). and the highest scores were in the sub-domain of interpersonal relationship. and the lowest scores were pay. The scores of job satisfaction by socio-demographic characteristics and daily life styles were not significantly differences, but in job characteristics, significantly increased with those feeling satisfied with their job. those with appropriate amount of duty amount, those free of jop autonomy, those feeling satisfied with their monthly income. satisfactory personal relations at work. 2. The mean scores of subjective fatigue symptoms were 27.6V10.9 of the total full scores(60.0), and the highest scores were in the sub-group of bodily projection of fatigue(Group III), and they were followed by difficulty in concentration(Group II). dullness and sleepness(Group I) in their decreasing order of magnitude. The scores of job satisfaction by socio-demographic characteristics and daily life styles were significantly increased with the group of lower age, the group of irregularly breakfast habit and the worse subjective health status. Based on job characteristics. the score of subjective fatigue symptoms were significantly increased with those group of lower clinical career and monthly income, those feeling unsatisfied with their job, those with inappropriate amount of duty amount. those satisfactory personal relations at work 3. The correlation of subjective fatigue symptoms with job satisfaction showed a negative correlation with rM-0.198(pM0.000), and job satisfaction were higher according to the lower subjective fatigue symptoms. The correlation among the scores of sub-domain of job satisfaction and the sub-group of subjective fatigue symptoms were significantly positive correlation. 4. The affecting factors of significance on job satisfaction included clinical career, duty amount salary satisfaction, with the explanatory power of 32.9%. Those on subjective fatigue symptoms included the eucation and the subjective health statuts, with the explanatory power of 20.8%. When considering these results, the job-satisfaction and the subjective fatigue symptoms were significantly correlated with the job related factors than factors of socio-demographic characteristics and daily life styles. In addition. if job environments of dental hygienist can improved. their job-satisfaction and subjective fatigue symptoms are suggested to be betters.

• Journal of Microbiology and Biotechnology
• /
• 제29권12호
• /
• pp.1947-1956
• /
• 2019

The gut microbiome influences the health and well-being of dogs. However, little is known about the impact of breed on the fecal microbiome composition in dogs. Therefore, we aimed to investigate the differences in the fecal microbiome in three breeds of dog fed and housed under the same conditions, namely eight Maltese (8.0 ± 0.1 years), eight Miniature Schnauzer (8.0 ± 0.0 years), and nine Poodle dogs (8.0 ± 0.0 years). Fresh fecal samples were collected from the dogs and used to extract metagenomic DNA. The composition of the fecal microbiome was evaluated by 16S rRNA gene amplicon sequencing on the MiSeq platform. A total of 840,501 sequences were obtained from the 25 fecal samples and classified as Firmicutes (32.3-97.3% of the total sequences), Bacteroidetes (0.1-62.6%), Actinobacteria (0.2-14.7%), Fusobacteria (0.0-5.7%), and Proteobacteria (0.0-5.1%). The relative abundance of Firmicutes was significantly lower in the Maltese dog breed than that in the other two breeds, while that of Fusobacteria was significantly higher in the Maltese than in the Miniature Schnauzer breed. At the genus level, the relative abundance of Streptococcus, Fusobacterium, Turicibacter, Succinivibrio, and Anaerobiospirillum differed significantly among the three dog breeds. These genera had no correlation with age, diet, sex, body weight, vaccination history, or parasite protection history. Within a breed, some of these genera had a correlation with at least one blood chemistry value. This study indicates that the composition of the fecal microbiome in dogs is affected by breed.

• 한국농공학회논문집
• /
• 제60권2호
• /
• pp.75-84
• /
• 2018

Thermal stress of livestock has been issued due to recent climate change trends and this causes reproductive disorders, decreased feed consumption, immunosuppression, and increased mortality of animals. Concept of THI has been widely used to quantitatively evaluate the degree of thermal stress for animals, however use of this concept is restricted for animals living in the enclosed facilities such as mechanically ventilated broiler houses. In this study, time-based internal energy flow and variation trends of temperature and humidity were analyzed based on BES technique. Local weather data, insulation characteristics of building materials, heat and moisture generation rate from broilers according to age, algorithm of ventilation operation were adopted for boundary condition of the model to accurately compute THI values inside the mechanically ventilated broiler house. From the BES computation, excess frequency of THI threshold in Jeju city was highest on the assumption that air conditioning equipments were not installed. When general raising density ($39kg\;m^{-2}$) was adopted, total 2,191 hours were exceeded. Excess hours of THI threshold were strongly related to the cumulative air temperature ($R^2=0.87$).

• 한국환경복원기술학회지
• /
• 제23권2호
• /
• pp.49-67
• /
• 2020

This study was conducted to compare and analyze forest vegetation distributed in Geumosanseong-inside in Geumosan Provincial Park from 2017.10 to 2019.6. The vegetation structure was classified by the phytosociological method and TWINSPAN and the correlation between the community structure and the environmental factors was analyzed using DCCA ordination analydsis. The vegetation structures are Quercus mongolica, Fraxinus mandshurica, Q. acutissima, Larix leptolepis, Prunus padus and Morus alba community by the phytosociological method and 16 communities under TWINSPAN. The importance value of Q. mongolica(64.5) was the highest, and followed by F. mandshurica, L. leptolepis, Acer pseudosieboldianum, M. alba, P. padus, Q. acutissima, Sorbus alnifolia, P. serrulata var. pubescens, F. sieboldiana, Rhododendron schlippenbachii and Castanea crenata which is consistent with species having the dominance status by analysis of the vegetation structure. As the results of DBH analysis for taxon with high importance values, Q. mongolica and M. alba represented normal distribution, and thus, the dominance status of these species is likely to continue. L. leptolepis will maintain the dominance status due to high density of large individuals as compared with species above medium size. However, it will decrease because of high mortality after increase in age class. F. mandshurica and P. padus continue to show dominance status due to high density of young individuals as compared with species above medium size. Q. acutissima have high density of individuals above intermediate size and low density of young individuals, and thus, will maintain the dominance status. A. pseudosieboldianum, F. sieboldiana and R.schlippenbachii which are arborescent will present continuously high dominance status because of high density of young individuals. Soil analysis shows that whereas pH, Ca²⁺ and Mg²⁺ in the research area were lower than the average values of overall forest soil and O.M, T-N, C.E.C and P₂O₅ were higher. We expected that these results were due to agricultures until 50 years ago in Geumosanseong-inside. As a result of DCCA ordination analysis using eleven environmental factors and communities classified by the phytosociological method analysis showed that Q. mongolica was distributed in the environment with higher elevation and O.M and steep slope, and lower P₂O₅, Mg²⁺ and Ca²⁺. In contrast to F. mandshurica, Q. acutissima was distributed in higher K⁺ and lower pH. L. leptolepsis was distributed in various environment.

• 한국안광학회지
• /
• 제15권3호
• /
• pp.287-291
• /
• 2010

목적: 정상안과 폭주부족안에서 폭주근점, AC/A비, 사위량, 조절력, 조절래그, 상대조절, 상대폭주 등의 양안시기능 검사값을 비교해 보고자한다. 방법: 사시나 약시 및 안질환이 없는 86명(남 45명, 여 41명 평균연령 $23.27{\pm}2.85$세)을 AC/A비와 원 근거리 사위량을 기준으로 정상안 43명과 폭주부족안 43명으로 분류하여 연구하였다. 두 그룹의 양안시기능은 포롭터를 이용 측정하였다. 결과: 정상안과 폭주부족안은 폭주근점 5.71 cm, 7.07 cm로, 거리차 AC/A비 5.28, 2.81, 원근거리 사위량 0.92 exo/3.36 exo, 2.17 exo/10.84 exo, 양성상대폭주 15.49/23.30/13.30, 13.50/20.02/9.09 등으로 차이가 있었으나, 조절력, 조절래그, 양성상대조절, 음성상대조절, 원거리 개산여력, 폭주여력, 음성상대폭주 등은 현저한 차이가 없었다. 결론: 두 그룹은 차폐검사, 폭주근점, 거리차 AC/A, 원 근거리 사위량, 양성상대폭주 파괴점과 회복점 등에서 유의한 차이가 있었다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제19권5호
• /
• pp.661-671
• /
• 2006

Steers (n = 335) of known genetic backgrounds from four fundamentally different growth types were subjected to two production systems to study the main effects and possible interactive effects on carcass composition. Growth types were animals with genetic potential for large mature weight (LL), intermediate mature weight-late maturing (IL), intermediate mature weight-early maturing (IE), and small mature weight-early maturing (SE). Each year, in a nine year study, calves of each growth type were weaned and five steers of each growth type were developed on pasture or feedlot and harvested at approximately 20 and 14 mo of age, respectively. Data recorded were chilled carcass weight and percentages of forequarter, foreshank, chuck, rib, plate, brisket, hindquarter, round, rump, shortloin, sirloin, flank, lean, fat, bone, and retail cuts. The growth $type{\times}production$ system interaction was an important source of variation in chilled carcass weight (p = 0.0395) and percentage retail cuts (p = 0.001), lean (p = 0.001), fat (p = 0.001), rump (p = 0.0454), shortloin (p = 0.0487), and flank (p = 0.001). The ranking of the growth $type{\times}production$ system means for percentage lean was LL-pasture>IL-pasture = IE-pasture = SE-pasture>LL-feedlot, IL-feedlot>IE-feedlot = SE-feedlot. The growth $type{\times}production$ system interaction was non-significant (p>0.05) for forequarter, foreshank, chuck, rib, plate, brisket, hindquarter, round and bone. Growth types of IE and SE yielded greater (p<0.05) mean forequarter than did growth types of IL and LL ($51.6{\pm}0.3$ and $51.5{\pm}0.3$ vs. $51.1{\pm}0.3$ and $50.8{\pm}0.3%$). Mean bone was highest (p<0.05) for the LL growth type and lowest (p<0.05) for the SE growth type ($19.5{\pm}0.5$ vs. $16.8{\pm}0.5%$). Mean bone was greater (p<0.05) for the pastured steers than for the feedlot steers ($21.8{\pm}0.8$ vs. $14.5{\pm}0.6%$). These data indicate that growth type responded differently in the two production systems and that these results should be helpful in the match of genetics to production resources.