• Title/Summary/Keyword: central asia

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NDVI time series analysis over central China and Mongolia

  • Park, Youn-Young;Lee, Ga-Lam;Yeom, Jong-Min;Lee, Chang-Suk;Han, Kyung-Soo
    • Proceedings of the KSRS Conference
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    • 2008.10a
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    • pp.224-227
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    • 2008
  • Land cover and its changes, affecting multiple aspects of the environmental system such as energy balance, biogeochemical cycles, hydrological cycles and the climate system, are regarded as critical elements in global change studies. Especially in arid and semiarid regions, the observation of ecosystem that is sensitive to climate change can improve an understanding of the relationships between climate and ecosystem dynamics. The purpose of this research is analyzing the ecosystem surrounding the Gobi desert in North Asia quantitatively as well as qualitatively more concretely. We used Normalized Difference Vegetation Index (NDVI) derived from SPOT-VEGETATION (VGT) sensor during 1999${\sim}$2007. Ecosystem monitoring of this area is necessary because it is a hot spot in global environment change. This study will allow predicting areas, which are prone to the rapid environmental change. Eight classes were classified and compare with MODerate resolution Imaging Spectrometer (MODIS) global land cover. The time-series analysis was carried out for these 8 classes. Class-1 and -2 have least amplitude variation with low NDVI as barren areas, while other vegetated classes increase in May and decrease in October (maximum value occurs in July and August). Although the several classes have the similar features of NDVI time-series, we detected a slight difference of inter-annual variation among these classes.

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Regime Shift of the Early 1980s in the Characteristics of the Tropical Cyclone Affecting Korea

  • Choi, Ki-Seon;Kim, Tae-Ryong
    • Journal of the Korean earth science society
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    • v.32 no.5
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    • pp.453-460
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    • 2011
  • By performing a statistical change-point analysis of activities of the tropical cyclones (TCs) that have affected Korea (K-TCs), it was found that there was a significant change between 1983 and 1984. During the period of 1984-2004 (P2), more TCs migrated toward the west, recurved in the southwest, and affected Korea, compared to the period of 1965-1983 (P1). These changes for P2 were related to the southwestward expansion of the subtropical western North Pacific high (SWNPH) and simultaneously elongation of its elliptical shape toward Korea. Because of these changes, the central pressure and lifetime of K-TC during P2 were deeper and longer, respectively, than figures for P1. This stronger K-TC intensity for P2 was related to the more southwestward genesis due to the southwestward expansion of the SWNPH. The weaker vertical wind shear environment during P2 was more favorable for K-TC to maintain a strong intensity in the mid-latitudes of East Asia.

Cereal Resources in National BioResource Project of Japan

  • Sato, Kazuhiro;Endo, Takashi R.;Kurata, Nori
    • Interdisciplinary Bio Central
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    • v.2 no.4
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    • pp.13.1-13.8
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    • 2010
  • The National BioResource Project of Japan is a governmental project to promote domestic/international research activities using biological resources. The project has 27 biological resources including three cereal resources. The core center and sub-center which historically collected the cereal resources were selected for each cereal program. These resources are categorized into several different types in the project; germplasm, genetic stocks, genome resources and database information. Contents of rice resources are wild species, local varieties in East and Southwest Asia & wild relatives, MNU-induced chemical mutant lines, marker tester lines, chromosome substitution lines and other experimental lines. Contents of wheat resources are wild strains, cultivated strains, experimental lines, rye wild and cultivated strains; EST clones and full-length cDNA clones. Contents of barley resources are cultivar and experimental lines, core collection, EST/cDNA clones, BAC clones, their filters and superpool DNA. Each resource is accessible from the online database to see the contents and information about the resources. Links to the genome information and genomic tools are also important function of each database. The major contents and some examples are presented here.

Sweet Basil (Ocimum basilicum): much more than a condiment

  • Barbalho, Sandra Maria;Machado, Flavia Maria Vasques Farinazzi;Rodrigues, Jaqueline Dos Santos;Silva, Tiago Henrique Pereira Da;Goulart, Ricardo De Alvares
    • CELLMED
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    • v.2 no.1
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    • pp.3.1-3.5
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    • 2012
  • Ocimum basilicum belongs to the family Lamiaceae and can be found in tropical Asia, Africa, Central America and South America. It is widely cultivated commercially as a condiment or for the production of essential oil. In this review, this plant is accredited with important effects on health, in addition to being a condiment. In folk medicine it is used to treat vomiting, intestinal colic and diarrhea, menstrual pains and to improve kidney function. Some studies have demonstrated that it can be used for the treatment of hyperlipidemia and also that it has antioxidant, neuroprotective, anti-inflammatory and vasodilator properties as well as hepatoprotective effects. In view of its broad range of effects, further studies should be conducted to ascertain the possible use of this plant in clinical trials, not only for prevention but also as an adjuvant in the treatment of different diseases.

Introduction to Distribution and Ecology of Sterile Conks of Inonotus obliquus

  • Lee, Min-Woong;Hur, Hyeon;Chang, Kwang-Choon;Lee, Tae-Soo;Ka, Kang-Hyeon;Jankovsky, L.
    • Mycobiology
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    • v.36 no.4
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    • pp.199-202
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    • 2008
  • Inonotus obliquus is a fungus that causes white heart rot on several broad-leaved species. This fungus forms typical charcoal-black, sterile conks (chaga) or cinder conks on infected stems of the birche (Betula spp). The dark brown pulp of the sterile conk is formed by a pure mycelial mass of fungus. Chaga are a folk remedy in Russia, reflecting the circumboreal distribution of I. obliquus in boreal forest ecosystems on Betula spp. and in meridional mountain forests on beech (Fagus spp.) in Russia, Scandinavia, Central Europe, and Eastern Europe. Distribution at lower latitudes in Western and Southern Europe, Northern America, Asia, Japan, and Korea is rare. Infected trees grow for many years without several symptoms of decline. The infection can penetrate through stem injuries with exterior sterile conks developing later. In the Czech Republic, cinder conk is found on birches inhabiting peat bogs and in mountain areas with a colder and more humid climate, although it is widespread in other broad leaved species over the Czech Republic. The most common hosts are B. pendula, B. pubescens, B. carpatica, and F. sylvatica. Less frequent hosts include Acer campestre, Acer pseudoplatanus, Alnus glutinosa, Alnus incana, Fraxinus excelsior, Quercus cerris, Q. petraea, Q. robur, Q. delachampii, and Ulmus sp.

Macrofungal Survey of the Tian Shan Mountains, Kyrgyzstan

  • Cho, Sung Eun;Jo, Jong Won;Kim, Nam Kyu;Kwag, Young-Nam;Han, Sang-Kuk;Chang, Kae Sun;Oh, Seung Hwan;Kim, Chang Sun
    • Mycobiology
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    • v.47 no.4
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    • pp.378-390
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    • 2019
  • The Tian Shan mountain system is one of the large mountain ranges located in Central Asia. This region is globally recognized as mountain ranges, offering inestimable wealth in fauna and flora with significant biodiversity values. We surveyed macrofungal diversity of Tian Shan in Kyrgyzstan from 2016 to 2018. A collection of macrofungi was made, and these were subjected to sequence comparisons and phylogenetic analysis to ensure the identity of the collected macrofungi. Of those collected, 95 out of 100 specimens were successfully sequenced and compared with those of other related species retrieved from GenBank. The sequenced specimens were classified into 2 phyla, 8 orders, 24 families, 47 genera, and 57 species, based on current taxonomic concepts (combining morphology and phylogeny). To the best of our knowledge, this study provides the first well-documented checklist and phylogenetic analysis of macrofungi recovered from the Tian Shan mountains in Kyrgyzstan.

Lag-correlation of Korean Drought in East Asia (한반도 가뭄의 동아시아 내에서의 지연상관)

  • Jun, Kap Young;Byun, Hi-Ryong;Kim, Do-Woo
    • Atmosphere
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    • v.18 no.4
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    • pp.249-266
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    • 2008
  • The tendencies for teleconnection with a time lag and other characteristics of Korean summer droughts have been investigated and some clues to predict the drought occurrences several months before have been found. First, the May and June droughts in Korea are simultaneous with those over the northwestern part of Korea owing to the relation with the baroclinic wave. However, the July and August droughts occur over the mid-latitudes or southern part of Korea owing to the relation with the Changma front. Second, several months before the MJJA droughts in Korea, it is found that the effective drought index (EDI) over particular areas (hereafter, referred to as the omen areas) is large. Thailand, Carolina Island, Mongolia, and Central Bengal Bay were selected as the omen areas. Third, when the monthly minimum EDI (MME) of the omen area in winter is more than 0.7, it signifies that the precipitation is above normal, Korea has almost always experienced a summer drought. However, the droughts occurring with this type of relationship only represent half of the MJJA droughts in Korea. Fourth, the relationships between the Korean drought and the precipitation over omen areas in low latitudes are not valid over all the eight precipitation areas in Korea, but only over Areas I, II, and III, where heavy rains occur during spring and summer.

A Survey on the Woody Plants Introduced to the Southern Part of Korea (우리나라 남부지방(南部地方)에 분포(分布)하는 외래수목조사(外來樹木調査))

  • Kim, Sam-Sik
    • Journal of Korean Society of Forest Science
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    • v.26 no.1
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    • pp.31-41
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    • 1975
  • This work was carried out from March 1963 to December 1974 to investigate exotic woody plants in the southern part of Korea. The author enumerated 263 kinds of woody plants; 203 species, 40 varieties, and 17 forms which belong to 136 genera and 63 families. Among 263 sorts of woody plants 99 were introduced from Japan, 87 from China, 32 from the North America, 17 from Europe, 13 from Australia, 8 from India and 8 from central part of Asia, etc. On the use of those trees of today 151 have been used for an ornamental source, 49 for timber, 22 for edible, 16 for medicinal and 22 for the others.

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The Factors Affecting Kyrgyzstan's Bilateral Trade: A Gravity-model Approach

  • Allayarov, Piratdin;Mehmed, Bahtiyar;Arefin, Sazzadul;Nurmatov, Norbek
    • The Journal of Asian Finance, Economics and Business
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    • v.5 no.4
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    • pp.95-100
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    • 2018
  • The study investigates the factors that affect Kyrgyzstan's bilateral trade flows with its main trading partners and attempts to predict trade potential for Kyrgyzstan. Using panel data, the gravity model is applied to estimate Kyrgyzstan's trade from 2000 to 2016 for its 35 main trading partners. The coefficients derived from the gravity-model estimation are then used to predict trade potential for Kyrgyzstan. Results proved to be successful and explained 63% of the fluctuations in Kyrgyzstan's trade. According to the results, Kyrgyzstan's and its partners' GDP have a positive effect on trade, while distance and partners' population prove to have a negative effect. Predicted trade potential reveals that neighboring countries (China, Kazakhstan, Uzbekistan, and Tajikistan) and Russia still have a significant trade potential. Kyrgyzstan, being a less developed economy, even by Central Asia standards, can only achieve its goals of reducing poverty and becoming more developed by increasing its overall trade with the rest of the world. Therefore, it is essential to study the main determinants of Kyrgyzstan's bilateral trade. In this way, we can help policy makers formulate policies to expand Kyrgyzstan's trade. This study is the first attempt to apply to the gravity model to Kyrgyzstan in an attempt to predict trade potential.

Enterovirus 71 infection and neurological complications

  • Lee, Kyung Yeon
    • Clinical and Experimental Pediatrics
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    • v.59 no.10
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    • pp.395-401
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    • 2016
  • Since the outbreak of the enterovirus 71 (EV71) infection in Malaysia in 1997, large epidemics of EV71 have occurred in the Asia-Pacific region. Many children and infants have died from serious neurological complications during these epidemics, and EV71 infection has become a serious public health problem in these areas. EV71 infection causes hand, foot and mouth disease (HFMD) in children, and usually resolves spontaneously. However, EV71 occasionally involves the central nervous system (CNS), and induces diverse neurological complications such as brainstem encephalitis, aseptic meningitis, and acute flaccid paralysis. Among those complications, brainstem encephalitis is the most critical neurological manifestation because it can cause neurogenic pulmonary hemorrhage/edema leading to death. The characteristic clinical symptoms such as myoclonus and ataxia, cerebrospinal fluid (CSF) pleocytosis, and brainstem lesions on magnetic resonance imaging, in conjunction with the skin rash of HFMD and the isolation of EV71 from a stool, throat-swab, or CSF sample are typical findings indicating CNS involvement of EV71 infection. Treatment with intravenous immunoglobulin and milrinone are recommended in cases with severe neurological complications from EV71 infection, such as brainstem encephalitis. Despite the recent discovery of receptors for EV71 in human cells, such as the scavenger receptor B2 and P-selection glycoprotein ligand 1, it is not known why EV71 infection predominantly involves the brainstem. Recently, 3 companies in China have completed phase III clinical trials of EV71 vaccines. However, the promotion and approval of these vaccines in various countries are problems yet to be resolved.