• Journal of Preventive Medicine and Public Health
• /
• v.51 no.4
• /
• pp.213-214
• /
• 2018

Lyme borreliosis (LB) is the most common tick-borne infectious disease in North America, and it was designated as a national notifiable infectious disease in Korea in December 2010. While no cases in Jeju-do were recorded from 2012 to 2016, a recent survey reported that the seroprevalence of Borrelia burgdorferi using enzyme-linked immunosorbent assays in horses in Jeju-do was 19.0% (95% confidence interval, 12.0 to 28.3%). This fact suggests that horses may be a potential reservoir of LB in Jeju-do and that individuals in close contact with horses may be a high-risk group. Thus, a serological study in this high-risk group is urgently needed.

• International Journal of Human Ecology
• /
• v.4 no.1
• /
• pp.15-23
• /
• 2003

Jeju-do is a volcanic island located off the shore of the Korean peninsula facing the Pacific Ocean. The traditional housing styles of the Jeju Province, therefore, reflect the impact of these natural backgrounds and reveal different housing styles that are distinctive from those of mainland Korea. The purpose of this research is to analyze the peculiarities of the Ondol (floor heating system) and the kitchen space of traditional housing of Jeju Island in terms of lifestyles. This study shall employ two research methods: a literature review and field survey methods. The literature review shall focus on the observations of characteristics noted in previous studies of Jeju's private houses. The field survey shall employ field survey and interview methods originating from the ethnography of the culturological-anthropologist approach. (1) The Jeju-do Ondol system is a “Weibang-eudul” system which means one Gudul per fire hole. (2) The definition of terms for Gulmook show variations depending on the various regions on Jeiu-do. (3) Major facilities in Jeongji include Gulmook, Sotduck, and Busup. Gulmook is a heating facility and Sotduck refers to a cooking facility; Busup refers to a combination of heating, cooking, and illuminating facilities.

• Journal of Environmental Science International
• /
• v.24 no.1
• /
• pp.97-115
• /
• 2015

For the purpose of protecting the health of citizens and creating a delightful environment, the Government shall establish the environmental standards, and make such standards keep their propriety according to any changes in environmental conditions. The Special Metropolitan City, Metropolitan City or Do may, in case where deemed necessary in view of the speciality of regional environments, set forth the separate environmental standards which are more expanded and strengthened than the environmental standards by the Municipal Ordinance of the relevant City/Do. The purpose of this study was for the management of stream waters of Jeju Island and proposed the appropriate Jeju local river environmental standards. Jeju-Do and Daejeon-si applies the Local River Environmental Standards in Korea. While each nation? circumstances and environment are different, for the most part, environmental standards and purposes of use are similar to those in Korea. Proposed Jeju River Local Environment Standards followed The River Environment Standards of Nation(Korea) for Living Environment Standards. Newly Strengthened Value is Cd, Carbon tetrachloride, 1,2-dichloroethene, Tetrachloroethylene(PCE) and add Items is Fluorine, Selenium, Phenol and Toluene for Human Health Protection.

• Parasites, Hosts and Diseases
• /
• v.49 no.4
• /
• pp.445-448
• /
• 2011

A survey was performed to find out the intermediate hosts of Gnathostoma nipponicum in Jeju-do (Province), the Republic of Korea. In August 2009 and 2010, a total of 82 tadpoles, 23 black-spotted pond frogs (Rana nigromaculata), 7 tiger keelback snakes (Rhabdophis tigrinus tigrinus), 6 red-tongue viper snakes (Agkistrodon ussuriensis), and 2 cat snakes (Elaphe dione) were collected in Jeju-do and examined by the pepsin-HCl digestion method. Total 5 gnathostome larvae were detected in 3 (50%) of 6 A. ussuriensis, 70 larvae in 3 of 7 (42.9%) R. tigrinus tigrinus, and 2 larvae in 2 of 82 (8.7%) frogs. No gnathostome larvae were detected in tadpoles and cat snakes. The larvae detected were a single species, and $2.17{\times}0.22mm$ in average size. They had characteristic head bulbs, muscular esophagus, and 4 cervical sacs. Three rows of hooklets were arranged in the head bulbs, and the number of hooklets in each row was 29, 33, and 36 posteriorly. All these characters were consistent with the advanced third-stage larvae of G. nipponicum. It has been first confirmed in Jeju-do that R. nigromaculata, A. ussuriensis, and R. tigrinus tigrinus play a role for intermediate and/or paratenic hosts for G. nipponicum.

• Proceedings of the Mineralogical Society of Korea Conference
• /
• 2000.05a
• /
• pp.19-19
• /
• 2000

;Ultramafic xenoliths found in alkali basalts from Jeju-do, Korea are mostly spinel Iherzolites composed of olivine, orthopyroxene, clinopyroxene and spinel. A subordinate amount of spinel harzburgites and pyroxenites are also found. Temperatures for these xenoliths were estimated from the compositions of coexisting pyroxenes (Wood '||'&'||' Banno 1973; Wells 1977; Bertrand '||'&'||' Mercier 1985; Brey '||'&'||' Kohler 1990), the AI-solubility in orthopyroxene coexisting with olivine and spinel (Sachtleben '||'&'||' Seck 1981; Webb '||'&'||' Wood 1986), and from Fe/Mg partitioning between olivine and spinel (Ballhaus et al. 1991). Temperature estimates from the thermometers by Wells (1977) and Brey and Kohler (1990) are compatible. Average equilibrium temperatures by these two methods for spinel peridotites range from 890 to 1030$^{\circ}$C. Pressures for spinel peridotites were estimated from the geobarometer by Kohler and Brey (1991) derived from the equilibrium Ca content of olivine coexisting with clinopyroxene, and fall within the range of 12.9 to 26.3 kbar. The combination of the thermometer by Brey and Kohler (1990) and the geobarometer by Kohler and Brey (1991) yields P- T estimates for Jeju-do spinel peridotites that fall in experimentally determined spinel lherzolite field in CFMASCr system (O'Neill 1981). These P-T data sets have been used to construct the Quaternary Jeju-do geotherm, which is significantly different from the conventional conductive geotherm. The xenolith-derived geotherm has a higher T gradient at low P (13 kbar) than at high P, which may be due to perturbation of the conductive heat flow by magma underplating or overplating at the crust-mantle boundary. Temperature estimates and statistics on the xenoliths indicate that the crust/mantle boundary in Jeju-do lies at about 11 kbar (~39 km). Spinellherzolite is inferred as a main constituent rock of the uppermost lithospheric mantle beneath Jeju-do. Pyroxenites were intercalated in peridotites in similar depth and temperature as re-equilibrated veins or lens.

• 한국해양학회지
• /
• v.21 no.3
• /
• pp.171-183
• /
• 1986

The amplitudes of the M2 tide recorded at Seoguipo and Jeju are 77.9cm and 70.1cm respectively, which differ by 7.8cm over a distance of 30km across the Jeju-Do. The difference is an example of the geographical variation of the tidal amplitude around the Jeju-Do, the larger amplitude being along its southern coast compared with that along its northern coast. This variation can be explained in terms of effects of an island on the wave propagation as modelled by Proudman(1914). A numerical experiment of the M2 tide around the Jeju-Do reproduces the basic pattern of the observed variation and results are consistent with the theory. Due to the rotation of the earth larger and smaller amplitudes result along the left-hand and right-hand coasts of an island for an observer facing the direction of the wave propagation in the northern hemisphere.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.5
• /
• pp.566-573
• /
• 2016

The age-adjusted incidence rate (AAR) of colorectal cancer in Korea peaked in 2011 and then began to decline. However, the AAR of colorectal cancer in Jeju increased continually from 1999 to 2013. Compared with the 16 major cities in Korea, the inhabitants of Jeju-do have a low cancer screening program participation rate, high alcohol consumption rate and high BMI. The present study aimed to provide a statistical basis for the lowering of the incidence of colorectal cancer in Jeju-do. The Jeju regional cancer institute data from 1999 to 2013 was used to analyze the between Jeju-do and Korea using the Joinpoint Regression program (Statistical Methodology and Applications Branch, Surveillance Research Program, National Cancer Institute) Version 4.2.0 - April 2015. The AAR of colorectal cancer in Jeju-do has being increasing because of the increase in the rates of male colon cancer (average annual percent change 8.422%, p-value<0.000), female colon cancer (AAPC 6.136%, p-value<0.000), male rectal cancer (AAPC 4.221%, p-value 0.003) and colon cancer in people aged over 50 years (AAPC 7.986% p-value<0.000). The results of this study suggest that the treatment of precancerous lesions of the male rectum and lowering of the incidence of colon cancer in people aged over 50 years are necessary to reduce the colorectal cancer incidence rate in Jeju-do.

• Korean Journal of Plant Resources
• /
• v.18 no.3
• /
• pp.450-455
• /
• 2005

This study was conducted to examine the effects of plant growth regulators on the plant regeneration from leaf segments of Lilium callosum, L. concolor var. partheneion, and L. formosanum. Leaf segments were sectioned about 5 mm long and cultured on the basal medium (MS medium with $3\%$ sucrose and $0.8\%$ agar) under dark condition, The most effective plant regulators on harvesting more shoots from leaf culture of L. callosum were $0.2\;mg{\cdot}L^{-1}\;BA$ and $0.5\;mg{\cdot}L^{-1}\;NAA$. Culturing in the basal medium with $0.2\;mg{\cdot}L^{-1}\;BA$ and $2.0\;mg{\cdot}L^{-1}\;NAA$ was effective for leaf culture of L. concolor var. partheneion. The treatment of $1.0\;mg{\cdot}L^{-1}\;BA$ and $1.0\;mg{\cdot}L^{-1}\;NAA$ was the most effective condition for shoot harvest at the leaf culture of L. formosanum.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.40 no.6
• /
• pp.394-410
• /
• 2007

Anchovy spawn from the end of May to mid-October, when the water temperature is $14.8-27.2\;^{\circ}C$ and the salinity is 26.0-33.6 psu. The main spawning season is between July to August, when the water temperature is $21.7-27.2\;^{\circ}C$ and the salinity is between 26.0-32.2 psu. The main spawning grounds of anchovy are coastal areas shallower than 50 m around the islands located in the Jeju Strait. Anchovy larvae are distributed near the fronts between Chuja-do, Jangsu-do, Yeoseo-do, and the open sea rather than in the spawning grounds. Anchovy eggs and larvae density increased in accordance with the high level of $Chlorophyll-{\alpha}$ during the summer season (July-August). In terms of the suspended sediment (SS) levels along the northern coast of the Jeju Strait, high densities of anchovy eggs (12.0-18.0 mg/L) were observed, mainly in the area affected by the coastal waters of the southern sea with high SS levels, while larvae (10.0-19.0 mg/L) tended to be distributed over a wide area with high SS levels, including the open sea. In terms of the dissolved oxygen (DO) content, eggs (5.4-6.8 mg/L) were observed in coastal areas with a high DO content, while larvae (4.2-6.4 mg/L) were distributed widely in areas with a relatively low DO content, from the southern coast to the open sea.

• Journal of Environmental Science International
• /
• v.32 no.12
• /
• pp.861-881
• /
• 2023

This study investigated the flora of the Wang-ime oreum located on Seogwipo-si, Jeju-do, to basic data for the Jeju Island plant distribution. A total of 366 taxa were found with 94 families, 240 genera, 358 species, 1 subspecies, 6 varieties, and 1 forma. The floristic target species in Korea appeared as 2 taxa of grade V, 13 taxa of grade IV, 46 taxa of grade III, 5 taxa of grade II, and 49 taxa of grade I. There were 14 taxa for naturalized plants. The different plant life forms that appeared were large ground plants (M)(54 taxa), small land plants (N) (52 taxa), epiphyte (E) (6 taxa), indicator plants (Ch) (4 taxa), and semi-aquatic plants (H) (168 taxa), There were 34 and 48 taxa of plants(G) and annuals (Th) respectively. From these results, Wang-ime oreum, which is adjacent to ranches and grasslands, has little artificial interference, as more plants are distributed, and fewer naturalized plants are found than in Suwolbong and Dangsanbong. Accordingly, each oreum plays an important role in the flora of Jeju-do, thus a management plan tailored to the characteristics of the volcano is necessary.