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Article: Epidemiological Characteristics of Field Tick-Borne Pathogens in Gwang-ju Metropolitan Area, South Korea, from 2014 to 2018.

Park, Jung Wook / Lee, Seung Hun / Lee, Gi Seong / Seo, Jin Jong / Chung, Jae Keun

Osong public health and research perspectives

2019 Volume 11, Issue 4, Page(s) 177–184

Abstract: Objectives: The importance of tick-borne diseases is increasing because of climate change, with a lack of long-term studies on tick-borne pathogens in South Korea. To understand the epidemiological characteristics of tick-borne diseases, the monthly ... ...

Abstract	Objectives: The importance of tick-borne diseases is increasing because of climate change, with a lack of long-term studies on tick-borne pathogens in South Korea. To understand the epidemiological characteristics of tick-borne diseases, the monthly distribution of field ticks throughout the year was studied in South Korea between May 2014 and April 2018 in a cross sectional study. Methods: The presence of various tick-borne pathogens ( Results: During the study period there were 11,717 ticks collected and 4 species identified. Conclusion: In conclusion, due attention should be paid to preventing tick-borne infections in humans whilst engaged in outdoor activities in Spring and Autumn, particularly in places where there is a high prevalence of ticks.
Language	English
Publishing date	2019-06-10
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	2656431-2
ISSN	2233-6052 ; 2210-9099
ISSN (online)	2233-6052
ISSN	2210-9099
DOI	10.24171/j.phrp.2020.11.4.06
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Article ; Online: Mapping Forest Vertical Structure in Gong-ju, Korea Using Sentinel-2 Satellite Images and Artificial Neural Networks

Yong-Suk Lee / Sunmin Lee / Hyung-Sup Jung

Applied Sciences, Vol 10, Iss 5, p

2020 Volume 1666

Abstract: ... The result shows that forest vertical structure in Gong-ju, Korea can be efficiently classified by using ...

Abstract	As global warming accelerates in recent years, the frequency of droughts has increased and water management at the national level has become very important. In particular, accurate understanding and management of the forest is essential as the water storage capacity of forest is determined by forest structure. Typically, data on forest vertical structure have been constructed from field surveys that are both costly and time-consuming. In addition, machine learning techniques could be applied to analyze, classify, and predict the uncertainties of internal structures in forest. Therefore, this study aims to map the forest vertical structure for estimating forest water storage capacity from multi-seasonal optical satellite image and topographic data using artificial neural network (ANN) in Gongju-si, South Korea. For this purpose, the 14 input neurons of normalized difference vegetation index (NDVI), two types of normalized difference water index (NDWI), two types of Normalized Difference Red Edge Index (NDre), principal component analysis (PCA) texture, and canopy height average and standard deviation maps were generated from Sentinel-2 optical images obtained in spring and fall season and topographic height maps such as digital terrain models (DTM) and digital surface models (DSM). The training/validation and test datasets for the ANN model were derived from forest vertical structures based on field surveys. Finally, the forest vertical classification map, the result of ANN application, was evaluated by creating an error matrix compared with the field survey results. The result showed an overall test accuracy of ~65.7% based on the number of pixels. The result shows that forest vertical structure in Gong-ju, Korea can be efficiently classified by using multi-seasonal Sentinel-2 satellite images and the ANN approach.
Keywords	forest vertical structure ; sentinel-2 ; worlddem ; artificial neural network ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	333
Language	English
Publishing date	2020-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Ecology of filariasis on Che Ju Island.

Kim, Joung Soon / Lee, Won Young / Chun, Suk Lak

Kisaengch'unghak chapchi. The Korean journal of parasitology

2003 Volume 11, Issue 1, Page(s) 33–53

Abstract: ... Ju Island for three consecutive years from 1968 to 1970 in seven villages, three coastal villages and ...

Abstract	Study of filariasis to determine important factors involved in its ecology was carried out on Che Ju Island for three consecutive years from 1968 to 1970 in seven villages, three coastal villages and four islets remote from the main island. One village which was located in mountainous area far from the coast was surveyed to serve as control area. About 90% of population inhabiting the study area had at least one blood smear during the three-year period; about one third had three blood smears, and a little over one third had two, and the rest only one examination. Animal and mosquito surveys were carried out at the same period. Followings are the results obtained: 1. All human cases but several had microfilariae identical to the description of B. malayi. The several cases who had morphologically different microfilariae from that of B. malayi need further study for definite conclusion. 2. Five persons randomly sampled from Mf positives and bled every two hours demonstrated nocturnal periodicity between 9 p.m. and 3 a.m. 3. Human is considered to be only reservoir host for human filariasis in the area since animal survey and experimental exposure to the infective larvae of human filaria species showed failure to infect animals. 4. Microfilaria rate, microfilaria density, prevalence of elephantiasis varied by area and age with correlation, which indicated cumulative process of the parasite by repeated exposure and development of host immunity to certain extent. 5. Clinical manifestation of filariasis (symptom complex and elephantiasis ) taken from history and inspection was low in its prevalence with range of 0.9% 11.8% of total population. Only 5.2% of 517 Mf positives had the clinical manifestation. 24.8% of 109 persons with clinical manifestation had microfilaria; 42.9% with symptom complex only, 23.1% with both symptoms and elephantiasis, and none with elephantiasis only were microfilaria positive. 6. Ae. togoi was the only species infected with the filaria. Mosquito infection rate by area showed positive correlation to the Mf rate and density of human population; where the Mf rate and density were high, the mosquito infection rate also high.
Language	English
Publishing date	2003-07-01
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	286875-1
ISSN	1738-0006 ; 0023-4001
ISSN (online)	1738-0006
ISSN	0023-4001
DOI	10.3347/kjp.1973.11.1.33
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Article: Assessing the physiological responses and shoot growth of potted 'Jen-Ju-Ba' guava (Psidium guajava L.) plants to drought

Lin, T. W / M. W. Pan / Y. C. Lee / H. Y. Hsieh / Y. C. Chu / J. C. Chang

Acta horticulturae. 2017 June 30, , no. 1166

2017

Abstract: ... and shoot growth of 2-year-old potted guava (Psidium guajava 'Jen-Ju-Ba') plants. During the first ...

Abstract	Guava is an important fruit crop in Taiwan, but is increasingly affected by drought because of global warming. Therefore, we investigated the effects of two water-withholding/recovery cycles on the physiology and shoot growth of 2-year-old potted guava (Psidium guajava 'Jen-Ju-Ba') plants. During the first cycle (days 0-9), leaf water potential (Î¨ leaf) and soil moisture decreased to -1.9 MPa (89% relative water content (RWC)) and -55 kPa (40% RWC), respectively, and the temporary wilting point was reached. Furthermore, the plants exhibited a 28-86% reduction in leaf CO2 exchange rate (Pn), chlorophyll fluorescence under light adaptation (Ð¤PSII), stomatal conductance (Gs), transpiration (E), leaf and soil RWC, Î¨ leaf, and soil moisture compared with well-watered control plants. However, no difference in shoot growth was recorded. During the second cycle (days 13-19), necrotic leaves appeared when Î¨ leaf and soil moisture decreased to -2.9 MPa (81% RWC) and -71 kPa (24% RWC), respectively, and the permanent wilting point was reached. At this stage, the experimental plants exhibited a 16-89% reduction in the abovementioned parameters compared with well-watered control plants and a 20% reduction in growth and a 210% reduction in the relative growth rate of the shoots, suggesting that reductions in Pn and shoot growth were significantly associated with pronounced drying. These findings indicate that an irrigation regime should be developed to optimize the canopy development of guava trees and that Pn, Ð¤PSII, E, and Gs might serve as useful physiological indices of drought.
Keywords	Psidium guajava ; canopy ; carbon dioxide ; chlorophyll ; drought ; drying ; global warming ; guavas ; irrigation management ; leaf water potential ; leaves ; physiological response ; shoots ; soil water ; stomatal conductance ; trees ; water content ; wilting point ; Taiwan
Language	English
Dates of publication	2017-0630
Size	p. 173-182.
Publishing place	International Society for Horticultural Science.
Document type	Article
Note	Paper presented at the International Symposium on GA3 Tropical Fruit (Guava, Wax Apple, Pineapple and Sugar Apple) held April 8-11 2015, Kaohsiung County, Chinese Taipei
ISSN	0567-7572
DOI	10.17660/ActaHortic.2017.1166.25
Database	NAL-Catalogue (AGRICOLA)

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Article: Antioxidant Activities of the Extracts of Herbs Used for Gamhongro-ju

Lee, S.R., Seoul National University, Seoul, Republic of Korea / Shin, H.H., Seoul National University, Seoul, Republic of Korea / Hwang, K.T., Seoul National University, Seoul, Republic of Korea / Jeong, S.T., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea / Kim, T.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea

Journal of The Korean Society of Food Science and Nutrition

(May 2010) Volume v. 39, Issue (5), Page(s) p. 643–647

Abstract: Gamhongro-ju is a Korean traditional alcoholic beverage made from medicinal herbs and spices ... In this study, polyphenol content and antioxidant activities of gamhongro-ju and the 8 individual herb extracts ...

Abstract	Gamhongro-ju is a Korean traditional alcoholic beverage made from medicinal herbs and spices. In this study, polyphenol content and antioxidant activities of gamhongro-ju and the 8 individual herb extracts used to make the beverage were determined. Cinnamon, saposhnikovia root, clove, ginger, violet-root cromwell, licorice, citrus peel and logan (2.5 g each) were extracted with 1000 mL of 45% and 60% purified ethanol (PE), and 45% traditionally distilled ethanol (TDE). The individual herb (20 g each) was extracted with 1000 mL of 60% PE. Polyphenol content, DPPH and ABTS radical scavenging activities of the extracts were measured. In the combined herb extracts, polyphenols were significantly higher in the 45% and 60% PE extracted for 90 days than those for 30 days. In the 8 individual herb extracts, the clove extract had the highest polyphenol content (2421~2446 mg/L). ABTS IC∧50 values of the combined herb extracts were lower in the 60% PE and 45% TDE extracted for 90 days than those for 30 days. In the 8 individual herb extracts, the clove and cinnamon had the lowest ABTS and DPPH IC∧50 values. In the individual extracts, ginger had the lowest polyphenol content; however, it was the third in the antioxidant activity.
Keywords	POLYPHENOLS ; POLYPHENOL ; POLIFENOLES
Language	Korean
Document type	Article
ISSN	1226-3311
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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Book: The Dobe Ju/'hoansi

Lee, Richard

(Case studies in cultural anthropology)

2003

Author's details	Richard B. Lee
Series title	Case studies in cultural anthropology
Language	English
Size	XIX, 249 S, Ill., graph. Darst., Kt, 24 cm
Edition	3rd ed
Publisher	Wadsworth/Thomson Learning
Publishing place	South Melbourne u.a.
Document type	Book
Note	Includes bibliographical references and index ; Previous ed. published as: The Dobe !kung : London: Holt, Rinehart and Winston, 1984
ISBN	0155063332 ; 9780155063334
Database	Former special subject collection: coastal and deep sea fishing

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Book: The Dobe Ju/'hoansi

Lee, Richard

(Case studies in cultural anthropology)

2003

Author's details	Richard B. Lee
Series title	Case studies in cultural anthropology
Language	English
Size	XIX, 249 S, Ill., graph. Darst., Kt, 24 cm
Edition	3rd ed
Publisher	Wadsworth/Thomson Learning
Publishing place	South Melbourne u.a.
Document type	Book
Note	Includes bibliographical references and index ; Previous ed. published as: The Dobe !kung : London: Holt, Rinehart and Winston, 1984
ISBN	0155063332 ; 9780155063334
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Article: A survey of ectoparasite infestations in stray dogs of Gwang-ju City, Republic of Korea.

Chee, Jeong Hyun / Kwon, Jung Kee / Cho, Ho Seong / Cho, Kyoung Oh / Lee, Yu Jin / Abd El-Aty, A M / Abdel-Aty, A M / Shin, Sung Shik

The Korean journal of parasitology

2008 Volume 46, Issue 1, Page(s) 23–27

Abstract: ... in Gwang-ju City, Republic of Korea. A total of 103 stray dogs collected in the Animal Shelter of Gwang-ju ...

Abstract	This study was designed to investigate the incidence of ectoparasite infestation among stray dogs in Gwang-ju City, Republic of Korea. A total of 103 stray dogs collected in the Animal Shelter of Gwang-ju City from November 2003 to August 2005 were investigated in this study. Ectoparasites of one or more genera were detected in 45.6% (47 / 103) of the dogs examined for dermatologic lesions and/or skin scrapings (from 3-5 affected areas). Otodectes cynotis was found to be the most frequent parasite (22.3%, 23 / 103), followed by Sarcoptes scabiei var canis (19.4%, 20 / 103), Ctenocephalides canis (6.8%, 7 / 103), Demodex canis (4.9%, 5 / 103), and Trichodectes canis (1.0%, 1 / 103). Monospecific infestation was found in 83.0% (39 / 47) of the affected dogs, whereas concurrent infestations with 2 or more ectoparasites per animal were found in 17.0% (8 / 47) of the affected dogs. Trichodectes canis is reported for the first time in the Republic of Korea. Dogs less than 1 yr old were more heavily infected than other age groups (66.7%), and small-sized dogs of less than 3 kg body weight were more heavily infected than larger dogs (41.7%).
MeSH term(s)	Age Distribution ; Animals ; Dog Diseases/epidemiology ; Dog Diseases/parasitology ; Dogs ; Ectoparasitic Infestations/epidemiology ; Ectoparasitic Infestations/veterinary ; Female ; Korea/epidemiology ; Male
Language	English
Publishing date	2008-03-12
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	286875-1
ISSN	1738-0006 ; 0023-4001
ISSN (online)	1738-0006
ISSN	0023-4001
DOI	10.3347/kjp.2008.46.1.23
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Article ; Online: Molecular characterization of enteroviruses detected in Gyeong-Ju and Po-Hang provinces of Korea in 2003.

Jeong, Eun-Ju / Lee, Jung-Hee / Kim, Mi-Sun / Bae, Geun-Ryang / Jung, Cheoll / Lee, Kwan / Choi, Sung-Min / Kim, Doo-Kwun / Lee, Dong-Seok / Kim, Won-Duck / Jee, Young-Mee / Cheong, Hae-Kwan / Lee, Seung-Hyun

Archives of virology

2010 Volume 155, Issue 10, Page(s) 1707–1712

Abstract: ... patients with aseptic meningitis and other enterovirus-related diseases from the Gyeong-Ju and Po-Hang ...

Abstract	We identified and characterized enteroviruses by amplifying the partial VP1 gene from pediatric patients with aseptic meningitis and other enterovirus-related diseases from the Gyeong-Ju and Po-Hang provinces of Korea in 2003. We identified two strains each of coxsackievirus A (CA) 6, CA9, and CA10; three enterovirus 71 (EV71) strains; and six echovirus 30 (E30) strains. The three EV71 strains were characterized as genogroup C4. These results are the first documentation reporting the occurrence of CA10 and EV71 genogroup C4.
MeSH term(s)	Capsid Proteins/genetics ; Child ; Child, Preschool ; Cluster Analysis ; Coxsackievirus Infections/virology ; Enterovirus/classification ; Enterovirus/genetics ; Enterovirus/isolation & purification ; Enterovirus Infections/virology ; Female ; Genotype ; Humans ; Infant ; Korea ; Male ; Molecular Sequence Data ; Phylogeny ; RNA, Viral/genetics ; Sequence Analysis, DNA ; Sequence Homology
Chemical Substances	Capsid Proteins ; RNA, Viral
Language	English
Publishing date	2010-10
Publishing country	Austria
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	7491-3
ISSN	1432-8798 ; 0304-8608
ISSN (online)	1432-8798
ISSN	0304-8608
DOI	10.1007/s00705-010-0755-4
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Article: [A study on Aedes togoi as vector of filariasis in Che Ju lsland]

Lee, Won Young

Kisaengch'unghak chapchi. The Korean journal of parasitology

2003 Volume 7, Issue 3, Page(s) 153–159

Abstract: ... vector of filariasis, was carried out on Che-Ju Island for two years from 1968 though 1969. Results ...

Abstract	A study on the Aedes togoi to find out important biological and ecological factors as an efficient vector of filariasis, was carried out on Che-Ju Island for two years from 1968 though 1969. Results obtained are as followings: 1)Geographical distribution of the mosquito breeding habitat was found to be extensive covering circular areas of about three km distance along the shore line. The main breeding sites were rockpools and smaller holes on rocks retaining tide and/or rain water with high larval density; water tanks, pots, and other artificial containers retaining only rain water around the houses located within the area with relatively low larval density. 2)Species constitution of adult mosquitos collected in the study villages consisted largely of Aedes togoi with a range of 70~90 per cent by village. 3)The pH of the breeding sites ranged from 5.0 to l0.0, and the chloride content from 0.01 to 28.75 (gm/l). More than fifty per cent of examined sites, however, had pH 5.6~6.5 and chloride content of less than 1.0 gm/1. 4)The natural infection rate of A. togoi by filaria showed proportional relationships with microfilaria rates among the human population by area. 5)Experimental infection of A. togoi by human and dog filaria demonstrated that this species is an efficient vector for both filaria species proved by natural infection as well as experimental infection. 6)Susceptibility of both larva and adult of A. togoi to insecticide, DDT and dieldrin, showed considerable sensitivity in all villages tested.
Language	Korean
Publishing date	2003-07-01
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	286875-1
ISSN	1738-0006 ; 0023-4001
ISSN (online)	1738-0006
ISSN	0023-4001
DOI	10.3347/kjp.1969.7.3.153
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