• Journal of Veterinary Clinics
• /
• v.19 no.2
• /
• pp.211-214
• /
• 2002

The mortalities of exotic felids that have been raised in Everland Zoological Gardens within a designated period (1976∼2001) were retrospectively analyzed based on the clinical charts and/or autopsy reports. During that period, a total of 154 exotic folios from 5 species were died. Noninfectious and traumatic factors, respiratory and digestive disorders account for the majority of cause of death. 40% of the death was concentrated in the winter season. The mortality of female and male was 55% and 45% respectively. The mortality of newborn folios(57%) were significantly higher than that of adult(32% and juvenile felids(11%) due to neonatal problems.

• Progress in Superconductivity and Cryogenics
• /
• v.25 no.2
• /
• pp.1-4
• /
• 2023

Over the past decade, the exploration of high-temperature superconductivity and the discovery of a wide range of exotic superconducting states in Fe-based materials have propelled condensed matter physics research to new frontiers. These materials exhibit intriguing phenomena arising from their multiband electronic structure, strongly orbital-dependent effects, extremely small Fermi energy, electronic nematicity, and topological aspects. Among the various factors influencing their superconducting properties, high magnetic fields play a crucial role as a control knob capable of disrupting the subtle balance between the spin, charge, lattice, and orbital degrees of freedom, leading to the emergence of various exotic superconducting states. In this review, we provide an overview of the current understanding of the exotic superconducting states observed in Fe-based superconductors, with a particular focus on FeSe and Sr₂VO₃FeAs, under the influence of high magnetic fields.

• Korean Journal of Environment and Ecology
• /
• v.20 no.3
• /
• pp.281-288
• /
• 2006

The purpose of this study was to investigate the distribution status and environmental index of the naturalized plants and exotic plants In the 16 sites in Gayasan National Park from March to October 2004. The exotic plants were recorded as 88 taxa, 39 families, 72 genera, 82 species, 5 varieties and 1 form. The naturalized plants among the exotic plants were certified as 47 taxa. The Naturalized Ratio (NR) was 4.06% and the Urbanization Index (UI) was 17,74% in area of Gayasan National Park. The naturalized plants were distributed around the region that had accepted artificial disturbance however, it was so difficult to identify distribution of naturalized plants in the conserved area as well as natural vegetation without artificial turbulence. The naturalized plants appeared as almost all speciesas 37 taxa (72%) which both originated from Europe and North America. Although a national degree for integrated management plans of exotic plants is needed, distribution and steady management of exotic plants in Gayasan National Park are playing an important role in conservation and protection of natural species.

• Journal of Forest and Environmental Science
• /
• v.35 no.3
• /
• pp.150-158
• /
• 2019

Exotic conifer trees have been extensively planted in southern China because of their high apparent growth and yield. These fast-growing plantations are expected to persist as a considerable potential for temporary and long-term carbon sink to offset greenhouse gas emissions. However, information on the carbon storage across different age ranges in exotic pine plantations is often lacking. We first estimated the ecosystem carbon storage across different age ranges of exotic pine plantations in China by quantifying above- and below-ground ecosystem carbon pools. The carbon storage of each tree component of exotic pine (Pinus elliottii) increased significantly with increasing age in Duchang and Yiyang areas. The stem carbon storage except <10 years in Ji'an areas was the largest component among all other components, which accounts for about 50% of the total carbon storage followed by roots (~28%), branches (~18%), and foliage (~9%). The mean total tree carbon storage of slash pine plantations for <10, 10-20 and 20-30 years across three study areas was 3.69, 13.91 and $20.57Mg\;ha^{-1}$, respectively. The carbon stocks in understory and forest floor were age-independent. Total tree and soil were two dominant carbon pools in slash pine plantations at all age sequences. The carbon contribution of aboveground ecosystem increased with increasing age, while that of belowground ecosystem declined. The mean total ecosystem carbon storage of slash pine plantations for <10, 10-20 and 20-30 years across China was 30.26, 98.66 and $98.89Mg\;ha^{-1}$, respectively. Although subtropical climate in China was suitable for slash pine growth, the mean total carbon stocks in slash pine plantations at all age sequences from China were lower than that values reported in American slash pine plantations.

• Proceedings of the Zoological Society Korea Conference
• /
• 2001.10a
• /
• pp.164.1-164
• /
• 2001

No Abstract, See Full Text

• Journal of the Korean Society of Costume
• /
• v.55 no.4 s.94
• /
• pp.124-137
• /
• 2005

Foreign culture, introduced by cultural exchange, was modified and accepted into a new form and value system. Culture speaks for the characters of the period, so it is presented by the mutual actions of many factors affecting culture. Religion is the essence of human life and the source of ideas about life, the universe and existence, so they become hidden inside of the structure of culture. Dancing costumes present the process of cultural modification and acceptance more vividly than general costumes. This research shows that, among foreign cultures, it is Buddhism that most influenced Chinese dancing costume. Taoism was the Chinese native religion that played an oppositional role against Buddhism. Taoism was hidden in Chinese dancing costume in every age. Chinese dancing costume changed many times due to the import of exotic styles such as Buddhism that partially replaced the Taoistic tradition. Therefore, it is confirmed that the process of cultural importation of exotic style was different according to the social, historical, and cultural backgrounds of China during the period from the Han to the Sui and Tang dynasties.

• Journal of the Korean Society of Costume
• /
• v.55 no.8 s.99
• /
• pp.48-56
• /
• 2005

Foreign culture, introduced by cultural exchange, was modified and accepted into a new form and value system. Culture speaks for the characters of the period, so it is presented by the mutual actions of many factors affecting culture. Religion is the essence of human life and the source of ideas about life, the universe and existence, so they become hidden inside of the structure of culture. Dancing costumes present the process of cultural modification and acceptance more vividly than general costumes. This research shows that, among foreign cultures, it is Buddhism that most influenced Chinese dancing costume. Taoism was the Chinese native religion that played an oppositional role against Buddhism. Taoism was hidden in Chinese dancing costume in every age. Chinese dancing costume changed many times due to the import of exotic styles such as Buddhism that partially replaced the Taoistic tradition. Therefore, it is confirmed that the process of cultural importation of exotic style was different according to the social, historical, and cultural backgrounds of China during the period from the Han to the Sui and Tang dynasties.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.2 no.2
• /
• pp.43-52
• /
• 1999

This study was carried out to verify results of the nursery seedbeds. From November of 1997 to September of 1998, the artificial banking slopes in the greenhouse of the College of Agriculture and Life Sciences, Seoul National University were seeded with the mixtures of those species. Most of exotic species showed relatively poor development of root as short as 30cm. Also the green weight of root biomass of the native species was more than two times than that of the exotic species. On the other hand, it was found that the exotic species have relatively well-developed fine roots. Thus, it was concluded that the seed-mixture of the native species with long and thick roots and the exotic species with fine roots be the most effective method for topsoil erosion control on banking-slopes. The artificial rainfall system treatment(30mm/hr, 60mm/hr, 100mm/hr) on $30^{\circ}$ banking-slopes did not cause any significant change in the amount of soil loss by erosion. The root system was best developed in the plot of 1,000 seedlings per square meter and it performed well for soil erosion control. Consequently, in the case of seeding of single herbaceous species without mixing any woody seeds, the expected seedlings were 1,000 to 2,000 per square meter.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.8 no.2
• /
• pp.90-97
• /
• 2005

This study aimed to address problems and suggest solutions in applying seed mixture design criterior of slope revegetation works according to the "Slope revegetation design and guidelines(proposed)" proposed by the Ministry of Construction and Transportation. To do this, a proper thickness of attaching soil media was identified in April experiment where the thickness and slopes varied. The results were as follows. In the test, the coverage rate of plot where exotic grass was not sowed increased with time and was 79.3% after three months of seeding, which indicated less risk of soil erosion. When applying the provisional standards of the plant mix proposed by the Ministry of Construction and Transportation, tree seeds and native plants were found ill in the early stage in all test lands due to exotic grass. This was because exotic grass which grew well in the early stage, could grow densely, so it might hamper the growth of other plants. When slope revegetation were planted and goals were set for herb, shrub and tree dominant mixture types, it was required to shift focus toward nursing up native plants first rather than early plantation of exotic grass.

• The Korean Journal of Ecology
• /
• v.23 no.5
• /
• pp.353-357
• /
• 2000

The soil pH favored by several native plants in Korea ranges 5.33∼7.20, while a more acidic range of pH 3.95∼6.10 is acceptable to exotic plants. Ethanol extracts of native and exotic plants in Korea were investigated for antimicrobial activity against Bacillus sphiaericus 2362, Bacillus thuringiensis var. subtilis and Bacillus thuringiensis var. cereus and Actinomycetes. Higher antimicrobial activity was observed from the extract of exotic plants than those of native plants. The ethanol extract of Ambrosia artemisiifolia var. elatior was observed to have the highest antimicrobial activity against 4 species of soil microbes. Especially, antimicrobial activity of Ambrosia artemisiifolia var. elatior showed the largest clear zone of 48mm in Actinomycetes. Larger clear zone was formed in the order of caffeic acid, benzoic acid and ρ -coumaric acid among the nine chemical compounds. Accordingly, the antimicrobial activity of Ambrosia artemisiifolia var elatior against Actinomycetes was found to be due to the synergetic effect of chemical compounds.