• Research in Plant Disease
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• v.16 no.1
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• pp.86-89
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• 2010

Brown leaf spot caused by Phyllosticta cruenta from 2007 to 2009 occurred severely in an herbs exhibition on Doonggulle (Polygonatum odoratum) at Gangju pond in Jeongchon-myon, Jinju city, Gyeongnam province, Korea. The typical symptoms of this disease were appeared on the brown leaf spot of leaves. Lesions on the leaves were appeared elliptical or irregular with 2~8 mm in size. Infected leaves were wilted, blighted and eventually died. Pycnidiospores and pycnidia of the fungus were abundantly formed on PDA. The optimum temperature for mycelial growth was $20{\sim}{25^{\circ}C}$. Pycnidiospores were not readily formed on PDA, colorless in color, globose~subglobose in shape, $10{\sim}18{\times}5{\sim}12{\mu}m$ in size and appendage hanged $4{\sim}15{\mu}m$ in size. Pycnidia were globose~subglobose in shape, dark brown in color and $60{\sim}162{\times}70{\sim}174{\mu}m$ in size. On the basis of mycological characteristics and pathogenicity test on host plants, the fungus was identified as Phyllosticta cruenta (Kunze: Fries) Kickx. This is the first report on the brown leaf spot of Doonggulle caused by P. cruenta in Korea.

• Journal of Korean Society of Forest Science
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• v.97 no.1
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• pp.30-34
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• 2008

This study was conducted to develop environmental techniques to reduce chestnut insect pests. The study sites were selected in intensive chestnut orchards of Jinju city, Gyeongnam province. In early and middleripening cultivars of chestnut tree, the damage of chestnut fruits by Dichocrocis punctiferalis was significantly lower in wromstop than other treatment such as Capture-machine, Nemacatch and Naphthalene (p<0.05), while there was no significant difference among treatments in late-ripening cultivars. The control effect of D. punctiferalis showed the highest in wormstop treanment with 90.68% and 80.58% in early and middle-ripening cultivars. The control effects for Curculio sikkimensis in late-ripening cultivars of chestnut tree was 80.58% in Nemacatch and 77.90% in Wormstop treatment.

• Parasites, Hosts and Diseases
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• v.21 no.1
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• pp.83-86
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• 1983

A survey on the infection status of Sparganum and Gnathossoma in frogs was carried out in 11 areas in Gyeongsangnam-do and Cheonlanam-do province, a southern part of Korea. 1. Among 626 frogs examined, 4% were infected with Sparganum, but none with Gnathostoma. The infection rates of Sparganum were variable according to the areas. Those from Kimhae, Sunchon, Jinhae, Sachun, Kosung, Keoje, and Hadong were 16%, 9.1%, 9.1%, 4.1%, 2%, 2%, and 1.5% respectively, but frogs from Hapchun, Kwangju, Namwon and Sanchung were not found infected. 2. Rana nigromaculata was the only species infected with Sparganum. Rana rugesa and Bombing orientalis were not infected. 3. Sparganum was mainly found in the legs and the trunk of frog. About 92.5% of worms were detected in the femoral intermuscular connective tissue. 4. Number per infected frog was in range of one to five, and 2.8% of frogs were inacted by only one worm. 5. The heavier the frog weight, the higher the infection rate of Sparganum. In frogs of 51~60grams, 28.6% were infected.

• Journal of Environmental Health Sciences
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• v.48 no.5
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• pp.272-281
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• 2022

Background: The constant consumption of chemical products owing to expanding industrialization has led to an increase in public interest in chemical substances. As the production and disposal processes for these chemical products cause environmental problems, regional information on the hazard level of chemical substances is required considering their effects on humans and in order to ensure environmental safety. Objectives: This study aimed to identify hazard contribution and spatiotemporal characteristics by region and chemical by calculating a hazard-based result score using pollutant release and transfer register (PRTR) data. Methods: This study calculated the chemical discharge and hazard-based result score from the Risk-Screening Environmental Indicators (RSEI) model, analyzed their spatiotemporal patterns, and identified hotspot areas where chemical discharges and high hazard-based scores were concentrated. The amount of chemical discharge and hazard-based risk scores for 250 cities and counties across South Korea were calculated using PRTR data from 2011 to 2018. Results: The chemical discharge (high densities in Incheon, Daegu, and Busan) and hazard-based result scores (high densities in Incheon, Chungcheongnam-do, and some areas of Gyeongsangnam-do Province) showed varying spatial patterns. The chemical discharge (A, B) and hazard-based result score (C, D) hotspots were identified. Additionally, identification of the hazard-based result scores revealed differences in the type of chemicals contributing to the discharge. Ethylbenzene accounted for ≥80% of the discharged chemicals in the discharge hotspots, while chromium accounted for >90% of the discharged chemicals in the hazard-based result score hotspots. Conclusions: The RSEI hazard-based result score is a quantitative indicator that considers the degree of impact on human health as a toxicity-weighted value. It can be used for the management of industries discharging chemical substances as well as local environmental health management.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.69-81
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• 2021

Coastal shipping performs a pivotal role as a national transportation network and is highly valuable in terms of enabling more economical transportation at affordable prices than road transportation. In this regard, this study aimed to examine changes in the characteristics and centrality of South Korea's costal shipping sea-route networks by analyzing the centrality of domestic coastal shipping. To this end, social network analysis was used as an analysis technique that enables an analysis on the characteristics of coastal shipping networks. As a result, Jeollanam-do showed the highest degree centrality, ranking first in both the in-degree and the out-degree. Jeollanam-do also exhibited the highest betweenness centrality, and Gangwon-do registered the highest closeness centrality. In terms of hub and authority centrality, Jeollanam-do topped the list, followed by Gyeongsangnam-do and Gangwon-do in order. Lastly, Jeollanam-do ranked highest in the hub index, followed by Incheon, other regions, and Gangwon-do in order. This study is significant for suggesting the cities and provinces that play a key role in coastal shipping each year and their corresponding items. Future studies are recommended to identify the trend of coastal shipping through more detailed research on each port by city and province.

• Asian Journal of Turfgrass Science
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• v.20 no.2
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• pp.237-251
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• 2006

This study was carried out to provide data on current sod production in South Korea. Fifteen items were surveyed including production acreage, species and cultivars, experience on farming, production cost and the others during April to October in 2006. To estimate production acreage, 73 turfgrass growers were interviewed. Estimated acreage for turfgrass production was 2,947 ha. Acreages by province were 1,417 ha in Jeollanam-do(48%), 442 ha in Jeollabuk-do(14.9%), 344 ha in Gyeonggi-do(11.6%), 248 ha in Gyeongsangnam-do(8.4%), and 240 ha in Chungcheongnam-do(8.1%), respectively. The major sod producing regions were Jangseong-gun, Hampyeong-gun, Yeonggwang-gun, Gochang-gun, Sacheon city, Iksan city, Yeoju city, Yeoncheon-gun. Percentage of turf growers over 50 years old was 72.4 percent, which means production was carried out mainly by old farmers. Grower's career over 10 years was 84.8%. Cultivated species and varieties were 'Junggi'(55.5%) of fine-textured Korean lawngrass, common Korean lawngrass(37.4%), Kentucky bluegrass(3.8%), and new zoysiagrass cultivars(0.1%), respectively. Sod size were variable. Sod size of $18{\times}18cm $ was 43.5 percent. Sales route was mainly through sod distributor(40.5%). Sod producing cost was $2,160{\sim}2,730$ won per square meter at Jeolla-do areas.

• Journal of the Korean Wood Science and Technology
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• v.43 no.3
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• pp.320-326
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• 2015

Mechanical properties of woods are easily affected by the differences of site environment such as soil and climate changes. In this study, the relationship between mechanical properties and growth factors for Cryptomeria japonica stands in Jeollanam-do Province, Gyeongsangnam-do Province and Je-ju island was analyzed. From these plot data, bending strength, compressive strength, and shear strength were analyzed by Duncan's new multiple range test. The results of Duncan's new multiple range test analysis indicated that bending strength, compression strength, and shear strength were positively related to tree mean height, and stem number per ha, respectively, while they were inversely proportional to DBH (diameter at breast height), elevation, and soil drainage. As a result of this study, there are high correlations between mechanical properties of wood and stand characteristics of Cryptomeria japonica by the region, this findings are very useful to apply the silvicultural treatment system to produce high quality timber as a basic data on this species (distributed in southern region of Korea).

• Journal of Korean Society of Forest Science
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• v.90 no.4
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• pp.543-547
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• 2001

An fungus gnat, Bradysia agrestis in the family Sciaridae was collected from Pinus spp. seedlings. This pest is a newly recorded insect from P. thunbergii, P. rigida, P. rigitaeda, and P. densiflora seedling. Brief morphological characters, damage symptom, host plants associated with the B. agrestis were recored. Significant variation in damaged of Pinus spp. seedling was attributed to differences between pine species(P. thunbergii : 15.4-20.0%, P. rigida : 23.1-48.8%, and P. rigitaeda : 13.8-67.5%, respectively) and sowing times(May : P. densiflora, 0%; P. rigida, 0%, July : P. densiflora, 20.0%; P. rigida, 49.4%, respectively).

• Journal of dental hygiene science
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• v.19 no.4
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• pp.220-227
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• 2019

Background: This descriptive study aimed to examine the relationship between the 4C core competencies and work ability among dental hygienists. Methods: From November 2018 to January 2019, data were collected-from 190 dental hygienists workong in dental clinics in Busan, Ulsan, and Gyeongsangnam province using structured questionnaires. For the general characteristics of the dental hygienists, frequency and percentage were calculated, and the level of the 4C core competencies and work ability of dental hygienists was calculated using means and standard deviations. A multiple regression analysis was conducted to analyze the effects of the 4C core competencies on work ability. Results: The mean scores for the 4C core competency levels of the dental hygienists were as follows: communication ability 3.34, critical thinking ability 3.41, creative problem-solving 3.40, and collaborative self-efficacy 3.27. Meanwhile the mean score for work ability level was 3.65. The predictive factors influencing work ability were communication ability and cooperative self-efficacy (p<0.001), and the sub-factors of critical thinking ability that affect work ability were sound conferences (p<0.01), intellectual fairness (p<0.05), intellectual enthusiasm (p<0.05), and self-confidence (p<0.001). Finally, the sub-factors of creative problem-solving ability that affect work ability were planning and execution (p<0.01) and performance evaluation (p<0.05). Conclusion: The current study showed that education programs covering the core competencies of dental hygienists, rather than the existing theoretical education program, should be developed and implemented to enhance 4C core competencies that affect work ability.

• Fashion & Textile Research Journal
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• v.20 no.3
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• pp.279-286
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• 2018

This study conducted a qualitative research based on interviews with school teachers and instructors operating external activities about how the management of one's own appearance influence the changes in subjective happiness and self-esteem by focusing on maladjusted students of two alternative schools and ordinary middle and high schools in Gyeongsangnam-do province. Happiness refers to a positive emotion that can be felt continuously throughout life such as life satisfaction, good experience, and positive way of thinking. The sense of happiness is the satisfaction that one feels by interpreting and evaluating his or her experience in a positive way and can be defined as the positive emotions that can be felt when one perceives and uses the strengths and resources that he or she has. Although the self-esteem is formed, changed, and developed throughout life, the self-awareness and self-evaluation develop more actively than other stages of development particularly in adolescence, and the adolescents with low self-esteem are faced with more serious behavioral, scholastic, and psychological issues. I hope the results of this study not only help current adolescents at risk to improve their self-esteem but also become a chance to see the issue of adolescents at risk as a part of social issue instead of limiting the issue as personal or domestic issue by expanding the application scope of the results to adolescents in middle schools and high schools who have the potential of going astray in order to approach the issue on the level of the entire society.