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박준성 ( Junseong Park ),이정훈 ( Jeong Hoon Lee ),김두남 ( Doo Nam Kim ),박영글 ( Yeongguel Park ),장충식 ( Choong Sik Jang ),박병수 ( Byung Soo Park ),강명희 ( Myounghee Kang ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.3
The hydro-acoustic technology has been widely used in not only South Korea but also many foreign countries for various scientific purposes. Unfortunately acoustic data especially collected from field surveys may contain noises caused by a variety of sources. Therefore, it is exceedingly important to eliminate noises when acoustic data are analyzed to derive quantitative results. This study introduced two methods for eliminating noises easily and effectively using post-processing software. Used acoustic data were collected on the Jinhae bay and Tongyeong coast of the South Sea in April 2015. The first method, that is the Wang’s method, placed emphasis on ‘erosion filter’ to eliminate only data samples contaminated by noises. The second method (Yamandu’s method) focused on the ‘resample by number of pings’ to remove pings contained noises. To substantiate the effectiveness of two methods, the mean Sv (Volume backscattering strength), mean height and depth of the fish schools detected were compared between before and after using the noise elimination methods. In the Wang’s method the mean Sv was decreased from -52.4 dB to -52.9 dB, and in the Yamandu’s method from -52.6 dB to -53.3 dB, indicating that noises were successfully eliminated. The mean height (1.5 m) and depth (19.0 m) were same between before and after using two methods showing that the shapes of fish schools were not changed.
박준성 ( Junseong Park ),서영일 ( Young Il Seo ),장충식 ( Choong Sik Jang ),박병수 ( Byung Soo Park ),박상식 ( Sang Sik Park ),안영수 ( Young Su An ),박준수 ( Junsu Park ),강명희 ( Myounghee Kang ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.2
Acoustic surveys using a scientific echosounder and trawl surveys were concurrently carried out in between Geoje and Tongyeong of the South Sea by season. The anchovy schools were identified by trawling in each station and used for frequency response analysis. Frequency responses of anchovy schools by season and species composition ratio were examined using multi-frequencies (18, 38, 70, 120 and 200 kHz). The frequency response r(f), is one of the acoustic characteristics which means the volume back-scattering strength ratio between a reference frequency and other frequencies. In spring, the r(f) of anchovy schools decreased with increased frequency, with the exception of 120kHz. While, in winter, the r(f) continuously decreased inversely proportional to the increase in frequency. Frequency response of anchovy schools presented a distinctive difference between spring and winter, however it did not different in spife of different species composition ratios in schools.
Optimization for Novel Glucanhydrolase Production of Lipomyces starkeyi KSM 22 by Statistical Design
PARk, JUNSEONG,KIM, BYUNG-HOON,LEE, JIN-HA,SEO, EUN-SEONG,CHO, KAB-SU,PARK, HYUN-JUNG,KANG, HEE-KYOUNG,YOO, SUN-KYUN,HA, MYUNG-SUk,CHUNG, HYUN-JU,CHO, DONG-LYUN,DAY, DONAL F.,KIM, DO-MAN 한국미생물 · 생명공학회 2003 Journal of microbiology and biotechnology Vol.13 No.6
Response surface methodology was applied to find the optimum conditions for the production of DXAMase (containing both dextranase and amylase activities) based on the cultivation variables (pH, temperature, and agitation rate). The experimental values from the model equation conceded with predicted values in which the predicted values for dextranase and amylase activities were 2.26 and 3.52 U/ml at pH 4, 28C, 235 rpm, and the corresponding experimental values were 2.41 and 3.68 U/ml, respectively.
Park, Ka Hyun,Lee, Kang Mun,Go, Min Jeong,Choi, Sung Ho,Park, Hyoung-Ryun,Kim, Youngjo,Lee, Junseong American Chemical Society 2014 Inorganic Chemistry Vol.53 No.16
<P>We report formation of a new metallascorpionate ligand, [Fe<I><B>L</B></I><SUB>3</SUB>]<SUP>3–</SUP> (IPtz), containing a Fe core and three 5-(2-hydroxyphenyl)-1<I>H</I>-tetrazole (<I><B>L</B></I>H<SUB>2</SUB>) ligands. It features two different binding sites, oxygen and nitrogen triangles, which consist of three oxygen or nitrogen donors from tetrazole. The binding affinities of the complex for three alkali metal ions were studied using UV spectrophotometry titrations. All three alkali metal ions show high affinities and binding constants (>3 × 10<SUP>6</SUP> M<SUP>–1</SUP>), based on the 1:1 binding isotherms to IPtz. The coordination modes of the alkali metals and IPtz in the solid were studied using X-ray crystallography; two different electron-donor sites show different coordination numbers for Li<SUP>+</SUP>, Na<SUP>+</SUP>, and K<SUP>+</SUP> ions. The oxygen triangles have the κ<SUP>2</SUP> coordination mode with Li<SUP>+</SUP> and κ<SUP>3</SUP> coordination mode with Na<SUP>+</SUP> and K<SUP>+</SUP> ions, whereas the nitrogen triangles show κ<SUP>3</SUP> coordination with K<SUP>+</SUP> only. The different binding affinities of IPtz in the solid were manipulated using multiple metal precursors. A Fe–K–Zn trimetallic complex was constructed by assembly of an IPtz ligand, K, and Zn precursors and characterized using X-ray crystallography. Oxygen donors are coordinated with the K ion via the κ<SUP>3</SUP> coordination mode, and nitrogen donors are coordinated with Zn metal by κ<SUP>3</SUP> coordination. The solid-state structure was confirmed to be a honeycomb coordination polymer with a one-dimensional infinite metallic array, i.e., −(K–K–Fe–Zn–Fe–K)<SUB><I>n</I></SUB>–.</P><P>A metallascorpionate complex featuring two different binding sites was prepared, and its different coordination modes with alkali metals in solution were studied. A honeycomb-coordinated structure with a one-dimensional infinite metallic array of −(K−K−Fe−Zn−Fe−K)<SUB><I>n</I></SUB>− was constructed by assembly of tetrazole and Fe, K, and Zn precursors.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/inocaj/2014/inocaj.2014.53.issue-16/ic5002336/production/images/medium/ic-2014-002336_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ic5002336'>ACS Electronic Supporting Info</A></P>
Effect of combined anti-PD-1 and temozolomide therapy in glioblastoma
Park, Junseong,Kim, Chang Gon,Shim, Jin-Kyoung,Kim, Jong Hoon,Lee, Hoyoung,Lee, Jae Eun,Kim, Min Hwan,Haam, Keeok,Jung, Inkyung,Park, Su-Hyung,Chang, Jong Hee,Shin, Eui-Cheol,Kang, Seok-Gu Informa UK (TaylorFrancis) 2019 Oncoimmunology Vol.8 No.1
Butadiene Polymerization Catalyzed by Tri(aryloxo)aluminum Adduct of Cobalt Acetate
Park, Ji Hae,Kim, Ahreum,Jun, Sung Hae,Kwag, Gwanghoon,Park, Ka Hyun,Lee, Junseong,Lee, Bun Yeoul Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
Tris(2-phenylphenoxo)aluminum ($(2-PhC_6H_4O)_3Al$) exists as a dimeric form in toluene. When toluene-insoluble anhydrous cobalt acetate is treated with tris(2-phenylphenoxo)aluminum in toluene, the toluene-soluble adduct $(2-PhC_6H_4O)_3Al{\cdot}Co(OAc)_2$ is formed. The 2-phenylphenoxo ligand in the adduct can be replaced with another aryloxo ligand to give (aryloxo)$(2-PhC_6H_4O)_2Al{\cdot}Co(OAc)_2$ (aryloxo = 2-methylphenoxo, 2-isopropylphenoxo, 4-methylphenoxo, 4-isopropylphenoxo, or 4-tert-butylphenoxo). These complexes are active for butadiene polymerization without gel formation when activated with an equivalent amount of $(2-PhC_6H_4O)AlEt_2$ for 2 h. The highest activity, 175 kg/mol-Co (turnover number, 3200) was achieved with $(2-PhC_6H_4O)_3Al{\cdot}Co(OAc)_2$ at $65^{\circ}C$ for 2 h. The microstructure of the polymer chains is mostly trans-1,4-configuration (70-75%) with the remaining being 1,2-vinyl. The cis-1,4-configuration observed by IR is minimal (1-5%). By replacing the 2-phenylpheoxo with a 4-alkylphenoxo ligand, the amount of 1,4-configuration slightly increases, resulting in increase in the endothermic melting signal at $-30{\sim}50^{\circ}C$ in the DSC curve. The molecular weights of the polymers are high ($M_n$: 300000~800000) with a fairly narrow molecular weight distribution ($M_w/M_n$, 2.0-2.7).