http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Hae-Jin Jeong,Byeong-Jo Kim 대한의생명과학회 2019 Biomedical Science Letters Vol.25 No.2
The objective of this study was to evaluate the effects of thoracic mobilization (TM) on the angle of thoracic kyphosis, and static and dynamic balances by application period. The subjects of this study were 18 adult males and females (≥20 years old) who had the angle of thoracic kyphosis equal to or higher than 40°. A pre-test was conducted for all subjects and TM was carried out. Data were collected before the intervention, 3 weeks after the intervention, and 6 weeks after the intervention. It was measured three times per measurement and mean values were used for the analysis. The results of this study showed that the angle of thoracic kyphosis significantly (P<.05) decreased after applying TM. However, the migration area (㎟) of the center of pressure (COP) in the static balance did not vary significantly. In the case of the dynamic balance, when eyes were open, the migration area (㎟) of the COP significantly (P<.05) decreased after 3 weeks. When eyes were open, the migration area (㎟) of the COP significantly (P<.05) decreased after 3 weeks and 6 weeks. Therefore, an intervention for improving the human body alignment and balance should be applied for a long-term, rather than a short-term, in order to be effective.
Hee Chang Kang,HAEJINJEONG,Jin Hee Ok,Ji Hyun You,Se Hyeon Jang,이승연,Kyung Ha Lee,박재연,Jung-Rae Rho* 한국조류학회I 2019 ALGAE Vol.34 No.2
The phototrophic dinoflagellate Biecheleriopsis adriatica is a small suessioid species characterized by a fragile thinwall. Although the morphology of this dinoflagellate is well established, there is currently little information availableon its distribution and the environmental factors that influence this distribution. Thus, to investigate the spatial andseasonal distributions of the vegetative cells of B. adriatica in Korean waters, surface water samples were collected on aseasonal basis from 28 stations in the East, West, and South Sea of Korea and Jeju Island from April 2015 to October 2018,and abundances of the vegetative cells of B. adriatica were quantified using quantitative real-time polymerase chainreactions, for which we developed the species-specific primer and probe set. Simultaneously, major environmentalparameters, including temperature, salinity, nutrient concentrations, and dissolved oxygen concentrations were measured. The vegetative cells of B. adriatica were detected at 20 of the 28 sampling stations: 19 stations in summer and 6 inautumn, although from no stations in either spring or winter. The ranges of water temperature and salinity at sites wherethis species was detected were 17.7-26.4°C and 9.9-34.3, respectively, whereas those of nitrate and phosphate concentrationswere not detectable-96.2 and 0.18-2.66 μM, respectively. Thus, the sites at which this species is found are characterizedby a narrow range of temperature, but wide ranges of salinity and concentrations of nitrate and phosphate. Thehighest abundance of the vegetative cells of B. adriatica was 41.7 cells mL-1, which was recorded in Jinhae Bay in July2018. In Jinhae Bay, the abundance of vegetative cells was significantly positively correlated with the concentration ofnitrate, but was negatively correlated with salinity. On the basis of these findings, it appears that the abundance of B. adriatica vegetative cells shows strong seasonality, and in Jinhae Bay, could be affected by the concentrations of nitrate.
Jin Hee Ok,HAEJINJEONG,Hee Chang Kang,Ji Hyun You,Sang Ah Park,Se Hee Eom,Jin Kyeong Kang,Yeong Du Yoo 한국조류학회I 2023 ALGAE Vol.38 No.4
Hypoxia can indeed impact the survival of protists, which play a crucial role in marine ecosystems. To better understand the protistan community structure and species that can thrive in hypoxic waters, we collected samples from both the surface and bottom waters during the hypoxic period in Jinhae and Masan Bays and the non-hypoxic period in Jinhae Bay. Subsequently, we utilized metabarcoding techniques to identify the protistan species. During hypoxia, with dissolved oxygen concentrations of 0.8 mg L-1 in Jinhae Bay and 1.8 mg L-1 in Masan Bay within the bottom waters, the phylum Dinoflagellata exhibited the highest amplicon sequence variants richness among the identified protist phyla. Following the Dinoflagellata, Ochrophyta and Ciliophora also displayed notable presence. In hypoxic waters of Jinhae and Masan Bays, we identified a total of 36 dinoflagellate species that exhibited various trophic modes. These included one autotrophic species, 14 mixotrophic species, 9 phototrophic species with undetermined trophic modes (either autotrophic or mixotrophic), 2 kleptoplastidic species, and 10 heterotrophic species. Furthermore, the hypoxic bottom water exhibited a greater number of heterotrophic dinoflagellate species compared to the non-hypoxic surface water within the same water column or the non-hypoxic bottom water. Therefore, feeding by mixotrophic and heterotrophic dinoflagellates may be partially responsible for their dominance in terms of the number of species surviving in hypoxic waters. This study not only introduces the initial documentation of 26 dinoflagellate species surviving in hypoxic conditions but also establishes a foundation for a more comprehensive understanding of the ecophysiology of dinoflagellates in hypoxic marine environments.