• 한국환경농학회지
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• 제26권3호
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• pp.204-209
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• 2007

Agricultural area in the vicinity of the ${\triangle}{\triangle}$ smelting factory in Kyeongbuk province, the third largest zinc smelting factory in the world, was contaminated by high concentration of heavy metals. However, the heavy metals source was not yet directly traced and thus, resulted to a conflict between the factory and residents within its vicinity. In order to determine the level of heavy metal contamination in the arable lands located at the north eastern part of the factory, soils were sampled systematically. To find out the major reason for the occurrence of this problem, waters and aerosols were sampled with constant intervals to the upward and downward direction from the factory and were analyzed to find out the heavy metal concentrations. Cadmium (Cd) and zinc (Zn) of the heavy metals were highly accumulated more than the Korean warning criteria (Cd 1.5, Zn 300 mg $kg^{-1}$) with mean values 1.7 and 407 mg $kg^{-1}$, respectively, at the surface soils (0-20 cm), and heavy metal concentration significantly decreased with increasing soil depth In addition, the concentration of both metals slightly decreased with increasing distance from the factory to the surface soils. Cadmium and Zn were detected in the upward stream water with low concentration and concentrations increased significantly in the downstream after passing across the factory. Aerosol samples also showed traces of Cd and Zn which could be attributed to the contamination of the water system and the surface soils. Conclusively, Cd and Zn emitted from the ${\triangle}{\triangle}$ smelting factory moved with the aerosol in the atmosphere and thus, contaminated the agricultural areas and the water system within it vicinity.

• 한국산림과학회지
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• 제110권4호
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• pp.569-576
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• 2021

This study developed an estimation model for litterfall input using the stand parameters (basal area, stand density, mean DBH, and carbon stocks of the aboveground tree biomass) collected from the Korean red pine (Pinus densiflora S. et Z.) stands of seven regions in Gyeongsangnam-do. The mean annual litterfall was 2,779 kg ha^-1 year^-1 for needles, 883 kg ha^-1 year^-1 for miscellaneous, 611 kg ha^-1 year^-1 for broadleaved, 513 kg ha^-1 year^-1 for branches, and 340 kg ha^-1 year^-1 for bark litter. The mean annual total litterfall was 5,051 kg ha^-1 year^-1. Litterfall components were significantly correlated with stand parameters, except for broadleaved litter. A stronger correlation was observed between the carbon stock of the aboveground tree biomass and all the litterfall components compared with the other stand variables. The allometric equations for all the litterfall components were significant (P < 0.05), with the stand parameters accounting for 5%-43% and 8%-42% of the variation in the needle litter and total litterfall, respectively. The results indicated that the annual litterfall inputs of the Korean red pine stands on a regional scale can be effectively estimated by allometric equations using the basal area and carbon stocks of the aboveground tree biomass.

• 대한수의사회지
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• 제21권7호
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• pp.413-422
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• 1985

This study was conducted to investigate the prevalence of the internal parasitisms of Korean native black goats which are grazing on the western mountainous land and southern island of Gyeongnam province of Korea. Forty hundred and forty-six heads of Kore

• 대한수의사회지
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• 제20권2호
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• pp.103-108
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• 1984

A total of 359 cultures of Staphylococcus were isolated from no raw milk samples in stock farms of Gyeongnam province from December, 1981 to May, 1982. Some biochemical properties and antimicrobial drug susceptibility of the isolaes were studied with the

• 대한수학회보
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• 제34권2호
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• pp.199-204
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• 1997

To develope the theory of BCI-algebras, the idel theory plays an important role. The first author [4] introduced the notion of T-ideal in BCI-algebras. In this paper, we first construct a special set, called T-part, in a BCI-algebra X. We show that the T-part of X is a subalgebra of X. We give equivalent conditions that the T-part of X is an ideal. By using T-part, we provide an equivalent condition that every ideal is a T-ideal.

• The Plant Pathology Journal
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• 제15권3호
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• pp.172-174
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• 1999

Anthracnose of cosmos caused by Colletotrichum acutatum is reported for the first time in Korea. The disease occurred widely in Kyeongnam province in1998 and the symptoms of sunken brownish spots were severely developed on stems. The fungi showed strong pathogenicity to the plant and are required at least 3 hr for conidial germination and host infection.

• 한국균학회지
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• 제49권1호
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• pp.1-10
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• 2021

A survey of fungal diversity in Gyeongsang Province, Korea, revealed two previously unreported Aspergillus isolates, named KMG411 and KMG412. The phylogeny of the isolates was analyzed based on β-tubulin (BenA) and calmodulin (CaM) sequencing. Morphological analyses further identified the KMG411 and KMG412 as A. insuetus and A. nomius, respectively. Here we provide detailed morphological descriptions of the previously unrecorded Aspergillus species.

• 한국산업보건학회지
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• 제27권1호
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• pp.46-58
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• 2017

Objectives: Particulate matter (PM) at construction sites mostly originates from either construction activities or the atmospheric environment. This study was conducted to evaluate the exposure level to PM and the contribution ratio of atmosphere sources at construction sites. Methods: We reviewed literature and governmental systems related to PM exposure in occupational settings and summarized them. In the field evaluation, five construction sites and one golf course were selected: two from Gyeonggi-do Province and four from North Gyeongsang-do Province. For each site, personal samples from outdoor construction workers and area samples from the outdoor area around the construction site office were collected according to construction work types. PM concentrations reported from nearby National Ambient Air Monitoring Stations were recorded. Respirable dust concentrations, respirable silica concentrations, and several metal concentrations including Cd, Cr, Pb, and As were monitored over four months. In the end we suggested how to manage particulate matter exposure at construction sites. Results: There was little literature reporting on exposure levels of construction workers to PM. Respirable dust concentrations measured in Gyeonggi-do Province were higher than those measured in North Gyeongsang-do Province. The geometric means of respirable dust concentrations in personal samples and area samples were $37.89{\mu}g/m^3$ and $92.86{\mu}g/m^3$, respectively. The respirable dust concentrations were higher than the PM concentrations reported from nearby National Ambient Air Monitoring Station. The geometric means of respirable silica concentrations of personal samples and area samples were $1.3{\mu}g/m^3$ and $1.1{\mu}g/m^3$, respectively. All metal concentrations were lower than 10% of individual Korean occupational exposure limits. Conclusions: Assuming that personal samples consisted of ambient PM and dust originating from work activities and area samples only collected ambient PM, we concluded that the dust exposure of outdoor construction workers originated 40.8% from the atmosphere and 59.2% from construction activities. PM exposure at construction sites should be controlled by employers, as in the case of outdoor heat stress. The Korean government needs to consider setting an occupational exposure limit for respirable dust.

• Parasites, Hosts and Diseases
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• 제59권5호
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• pp.531-536
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• 2021

The prevalence and intensity of Opisthorchis viverrini metacercariae (OvMc) were investigated in fish from 3 southern administrative regions along the Mekong River in Cambodia, i.e., Phnom Penh, Takeo, and Kandal Provinces from 2017 to 2020. A total of 295 freshwater fish (24 species) were transported to our laboratory with ice and examined using the artificial digestion method. In Phnom Penh, among 4 fish species positive for OvMc, 9 (23.7%) of 38 specimens examined were infected, and their intensity of infection averaged 4.3 metacercariae per infected fish. In Takeo Province, among 10 fish species positive for OvMc, 24 (38.1%) out of 63 fish examined were infected, and their intensity of infection was av. 14.4 metacercariae per infected fish. In particular, all of 3 Osteochilus schlegelii fish examined were infected, and their infection intensity was high, 34.7 metacercariae per fish. In Kandal Province, among 6 fish species positive for OvMc, 46 (90.2%) out of 51 specimens examined were infected, and their infection intensity was 24.0 metacercaraie per infected fish. All fish of Systomus orphoides (n=17), Barbonymus altus (n=14), and Rasbora aurotaenia (n=2) were infected, and their intensity of infection averaged 37.7, 21.6, and 18.5 metacercariae per fish, respectively. Metacercariae of Haplochis yokogawai, Haplorchis taichui, and Centrocestus formosanus were detected in fish from Takeo and Kandal Provinces. From these results, it has been confirmed that a variety of fish species from Phnom Penh, Takeo, and Kandal Provinces are commonly infected with OvMc, and preventive measures to avoid human O. viverrini infection should be performed in Cambodia.

• 치위생과학회지
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• 제8권4호
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• pp.313-322
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• 2008

치과위생사의 학점은행제에 대한 기대와 요구를 지역별로 조사하기 위해 2008년 3월부터 5월까지 서울 경기, 광역시, 강원도, 경상도 지역에 위치한 치과 병 의원에 근무하는 치과위생사 312명을 대상으로 설문조사를 실시하여 SPSS 11.5를 이용하여 분석한 결과 1. 학점은행제에 대한 인식은 68.3%로 대부분의 지역에서 인식을 하고 있으나, 강원도 지역은 조사대상자 13.8%(43명) 모두 인식하지 못하는 것으로 나타났다. 인식한 정보매체로는 서울 경기 지역을 제외한 대부분의 지역에서 주위 사람들에 의해 인식하는 비율(46.2%)이 높았다. 2. 학점은행제에 대한 기대는 경상도 지역은 학업이나 업무능력 개선, 학점 학위 또는 자격증, 새로운 기술환경 접근 등 기대도 9개 항목 중 6개 항목에서 가장 높게 나타났으며, 강원도 지역은 여가선용과 구직활동에서 가장 높게 나타났다. 3. 학점은행제에 대한 교육비는 서울 경기와 강원도 지역은 3만원 미만이 각각 18.9%, 8.7%, 광역시는 3만원 이상~5만원 미만이 19.9%, 경상도 지역은 3만원 미만과 3만원 이상~5만원 미만이 각각 14.1%로 가장 많았으며, 교육방법은 서울 경기 지역은 강의식이 13.5%이었고, 광역시 강원도 경상도 지역은 강의+실습이 각각 18.6%, 11.5%, 21.5%로 가장 높게 나타났다. 4. 학점은행제 전공 영역별 중요도를 살펴보면, 구강보건교육영역은 강원도 지역에서 $3.56{\pm}1.259$로 가장 높았고, 예방처치영역은 광역시에서 $3.64{\pm}1.191$로 가장 높게 나타났다.