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Jung, Yeoun Joong,Park, Young Cheol,Lee, Ka Jeong,Kim, Min Seon,Go, Kyeong Ri,Park, Sang Gi,Kwon, Soon Jae,Yang, Ji Hye,Mok, Jong Soo Elsevier 2017 MARINE POLLUTION BULLETIN Vol.115 No.1
<P><B>Abstract</B></P> <P>We aimed to compare the spatial and seasonal distributions of fecal coliforms (FCs) and other physiochemical factors in the drainage basin of the Jaranman-Saryangdo area. Among the pollution sources, the mean daily loads and half-circle radii of FCs were the highest in June. However, the pollutants did not reach the boundary line of the designated area due to an existing buffer zone. The value of the FC geometric mean at station 1 was highest in August during periods of heavy rainfall; however, this value was lower than the regulation limit. The highest daily loads of chemical oxygen demand (COD) and chlorophyll-<I>a</I> (Chl-<I>a</I>) in seawater were in the surface layer in August; however, dissolved oxygen (DO) in the bottom water layer was at its lowest in August. This study demonstrated that season and rainfall have significant effects on the FC, COD, DO, and Chl-<I>a</I> concentrations in seawater.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The Jaranman-Saryangdo area can be easily contaminated by various drainage sources. </LI> <LI> The geometric mean for FCs was at its maximum in August periods of heavy rainfall in Korea. </LI> <LI> Season and rainfall have significant effects on the FC and physiochemical factors. </LI> </UL> </P>
Rhim, Joong-Hyun,Cho, Doo-Yeoun,Lee, Kyu-Yeul,Kim, Tae-Wan The Society of Naval Architects of Korea 2006 Journal of ship and ocean technology Vol.10 No.2
Ship hullform is usually designed with a curve network, and smooth hullform surfaces are supposed to be generated by filling in (or interpolating) the curve network with appropriate surface patches. Tensor-product surfaces such as B-spline and $B\'{e}zier$ patches are typical representations to this interpolating problem. However, they have difficulties in representing the surfaces of irregular topological type which are frequently appeared in the fore- and after-body of ship hullform curve network. In this paper, we proposed a method that can automatically generate discrete $G^1$ continuous B-spline surfaces interpolating given curve network of ship hullform. This method consists of three steps. In the first step, given curve network is reorganized to be of two types: boundary curves and reference curves of surface patches. Especially, the boundary curves are specified for their surface patches to be rectangular or triangular topological type that can be represented with tensor-product (or degenerate) B-spline surface patches. In the second step, surface fitting points and cross boundary derivatives are estimated by constructing virtual iso-parametric curves at discrete parameters. In the last step, discrete $G^1$ continuous B-spline surfaces are generated by surface fitting algorithm. Finally, several examples of resulting smooth hullform surfaces generated from the curve network data of actual ship hullform are included to demonstrate the quality of the proposed method.
Delayed posterior circulation insufficiency in pediatric moyamoya disease.
Lee, Ji Yeoun,Choi, Young-Hun,Cheon, Jung-Eun,Paeng, Jin Chul,Ryu, Hye Won,Kim, Ki Joong,Phi, Ji Hoon,Wang, Kyu-Chang,Cho, Byung-Kyu,Chae, Jong-Hee,Kim, Seung-Ki Springer-Verlag [etc.] 2014 Journal of neurology: Zeitschrift für Neurolo Vol.261 No.12
<P>Approximately 30% of patients with moyamoya disease (MMD) have presented with involvement of the posterior circulation, mainly the posterior cerebral artery (PCA). Diagnosis of delayed progression of PCA stenosis in MMD may be difficult due to the diversity in clinical features. The goal of this study was to evaluate pediatric MMD patients with delayed PCA involvement after completion of revascularization of the anterior circulation. Forty-one pediatric MMD patients who underwent revascularization of the PCA territory due to delayed posterior circulation insufficiency MMD from 2006 to 2011 were retrospectively reviewed. The average interval between the initial operation and the occipital artery (OA) procedure was 5.0 years. Common symptoms were headaches and transient visual symptoms. The decision to operate was made based on a combination of diagnostic tools. The results obtained with perfusion MRI, SPECT, MR angiography, and EEG supported posterior circulation insufficiency in 78, 41, 73, and 71% of patients, respectively. Encephaloduroarteriosynangiosis (EDAS) using the OA was performed in 15 patients, and 26 patients received multiple burr hole trephination of the occipital area. All patients showed clinical improvement. Clinicians should be aware of the possibility of delayed involvement of the PCA in pediatric MMD patients. The clinical decision regarding treatment should be based on a combination of symptomatology and the results obtained with various tools to assess whether the blood flow in the PCA territory is insufficient. Surgical treatment using indirect revascularization appears to be effective for patients with delayed PCA involvement.</P>
이정하,엄성환,EunHyeLee,Yeoun-Joong Jung,Hyo-Jung Kim,Mi-Ra Jo,Kwang-TaeSon,Hee-Jung Lee,Ji-HoeKim,Myung-Suk Lee,김영목 한국조류학회I 2014 ALGAE Vol.29 No.1
To develop effective and safe acne vulgaris therapies with a continuing demand for new solutions, we investigated unique efficacy of an antibacterial agent from marine brown alga Eisenia bicyclis in treating acne vulgaris. The methanolic extract of E. bicyclis exhibited potential antibacterial activity against acne-related bacteria. The ethyl acetate fraction showed the strongest antibacterial activity against the bacteria among solvent fractions. Six compounds (1-6), previously isolated from the ethyl acetate fraction of E. bicyclis, were evaluated for antibacterial activity against acne-related bacteria. Among them, compound 2 (fucofuroeckol-A [FF]) exhibited the highest antibacterial activity against acne-related bacteria with a minimum inhibitory concentration (MIC) ranging from 32 to 128 μg mL-1. Furthermore, FF clearly reversed the high-level erythromycin and lincomycin resistance of Propionibacterium acnes. The MIC values of erythromycin against P. acnes were dramatically reduced from 2,048 to 1.0 μg mL-1 in combination with MIC of FF (64 μg mL-1). The fractional inhibitory concentration indices of erythromycin and lincomycin were measured from 0.500 to 0.751 in combination with 32 or 64 μg mL-1 of FF against all tested P. acnes strains, suggesting that FF-erythromycin and FF-lincomycin combinations exert a weak synergistic effect against P. acnes. The results of this study suggest that the compounds derived from E. bicyclis can be a potential source of natural antibacterial agents and a pharmaceutical component against acnerelated bacteria.