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New Record of The Leek Moth, Acrolepiopsis nagaimo (Lepidoptera:Acrolepiidae) in Korea
Taeho Kim,Min-Ki Kim,Jae-Ha Lim,Soowon Cho 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
Acrolepiopsis nagaimo (Yasuda, 2000) belonging to the family Acrolepiidae (Lepidoptera) is newly discovered in Korea. The species was first collected wild at Wol-ak-san [Mt.] a few years ago and they were recently found to infest Chinese yam, Dioscoreabatatas at a Chinese yam experimental field of the Institute for Bioresources Research located at Andong. Diagnostic characteristics of the adult are described and photographs of adult and male and female genitalia are provided.
In situ investigation of the oxidation of Zr–Nb–Cu alloy in high-temperature hydrogenated water
Kim, Taeho,Kim, Seunghyun,Lee, Chung-yong,Mok, Yong-kyoon,Kim, Ji Hyun Elsevier 2017 Corrosion science Vol.119 No.-
<P><B>Abstract</B></P> <P>The oxidation behavior of a Zr–Nb–Cu alloy under high-temperature water conditions, with different dissolved hydrogen concentrations, was investigated using in situ Raman spectroscopy. The results were subsequently compared to those of ex situ TEM analyses. Upon decreasing the dissolved hydrogen concentration from 4.15 to 2.49mg/kg at STP, the peak intensity of tetragonal phase oxide weakened, while that of monoclinic oxide strengthened due to the phase transformation. Ex situ analyses revealed that the Zr–Nb–Cu alloy was oxidized slowly as compared to the Zr–Nb–Sn alloy due to the number of β-Nb precipitates in the oxide.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The oxide characteristics of Zr–Nb–Cu and Zr–Nb–Sn alloys were compared. </LI> <LI> The Nb precipitates were positioned at the oxide/metal interface of Zr–Nb–Cu alloy. </LI> <LI> The corrosion resistance of Zr–Nb–Cu alloy was higher than that of Zr–Nb–Sn alloy. </LI> <LI> Dissolved hydrogen concentration was varied to see the effect on the phase formation. </LI> <LI> Dissolved hydrogen concentration influenced the early-stage oxide phase formation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kim Gwan-Young,Kim Jin-Ho,Lee Taeho,Bae Byoung-Chan,Baik Hyejeong,김태헌,Kim Junsik,Kang Dong Wook,Kim Ju Hee,Kim Dahan,Cho Hea-Young,김대덕 한국약제학회 2022 Journal of Pharmaceutical Investigation Vol.52 No.1
Purpose The aim of this work was to evaluate a new polylactic acid microsphere depot formulation (Leuprolide Depot 3 M) prepared by a water-in-oil-in-water emulsion/solvent evaporation method. Methods The physical properties of the microspheres, including particle size and drug encapsulation efficiency, were characterized. The accelerated and long-term in vitro release profiles were examined. Pharmacokinetic and pharmacodynamic studies were conducted in male beagle dogs after a single subcutaneous injection of the microspheres at 11.25 mg/animal leuprolide acetate by measuring the plasma leuprolide and testosterone levels, respectively. Results Leuprolide Depot 3 M was spherical in shape with a smooth surface and showed an average diameter of 17.83 μm and a drug loading content of 7.58% (w/w). These properties were comparable to those of Lupron Depot 30 mg, a commercial product. In vitro release of leuprolide at 37 °C from both formulations was sustained for up to 126 days and showed a similarity factor (f2) of 51.0. In the pharmacokinetic study, the plasma leuprolide concentration after subcutaneous injection of Leuprolide Depot 3 M or Lupron Depot 30 mg remained at approximately 0.1 ng/mL for up to 98 days. There were no significant differences in the pharmacokinetic parameters between the two formulations. Moreover, the plasma testosterone level was effectively suppressed to less than 0.5 ng/mL until the end of the evaluation. Conclusion These results suggest that Leuprolide Depot 3 M and Lupron Depot 30 mg are expected to have comparable efficacy profiles in clinical settings, which should be confirmed in further clinical studies.
Kim, Jaeyun,Kim, Hoe Suk,Lee, Nohyun,Kim, Taeho,Kim, Hyoungsu,Yu, Taekyung,Song, In Chan,Moon, Woo Kyung,Hyeon, Taeghwan WILEY-VCH Verlag 2008 Angewandte Chemie. international edition Vol.47 No.44
<B>Graphic Abstract</B> <P>Magnetic, fluorescent core–shell nanoparticles consist of a single Fe<SUB>3</SUB>O<SUB>4</SUB> nanocrystal core and a dye-doped mesoporous silica shell with a poly(ethylene glycol) coating (see picture of TEM images and schematic depictions). These nanoparticles can be used as magnetic resonance and fluorescence imaging agents, and as drug delivery vehicles, thus making them novel candidates for simultaneous cancer diagnosis and therapy. <img src='wiley_img/14337851-2008-47-44-ANIE200802469-content.gif' alt='wiley_img/14337851-2008-47-44-ANIE200802469-content'> </P>
Kim, Jiyeon,Kern, Elizabeth,Kim, Taeho,Sim, Mikang,Kim, Jaebum,Kim, Yuseob,Park, Chungoo,Nadler, Steven A.,Park, Joong-Ki Elsevier 2017 Molecular phylogenetics and evolution Vol.107 No.-
<P><B>Abstract</B></P> <P>Plectida is an important nematode order with species that occupy many different biological niches. The order includes free-living aquatic and soil-dwelling species, but its phylogenetic position has remained uncertain. We sequenced the complete mitochondrial genomes of two members of this order, <I>Plectus acuminatus</I> and <I>Plectus aquatilis</I> and compared them with those of other major nematode clades. The genome size and base composition of these species are similar to other nematodes; 14,831 and 14,372bp, respectively, with AT contents of 71.0% and 70.1%. Gene content was also similar to other nematodes, but gene order and coding direction of <I>Plectus</I> mtDNAs were dissimilar from other chromadorean species. <I>P. acuminatus</I> and <I>P. aquatilis</I> are the first chromadorean species found to contain a gene inversion. We reconstructed mitochondrial genome phylogenetic trees using nucleotide and amino acid datasets from 87 nematodes that represent major nematode clades, including the <I>Plectus</I> sequences. Trees from phylogenetic analyses using maximum likelihood and Bayesian methods depicted Plectida as the sister group to other sequenced chromadorean nematodes. This finding is consistent with several phylogenetic results based on SSU rDNA, but disagrees with a classification based on morphology. Mitogenomes representing other basal chromadorean groups (Araeolaimida, Monhysterida, Desmodorida, Chromadorida) are needed to confirm their phylogenetic relationships.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The phylogenetic position of Plectida within Chromadorea (Nematoda) remains uncertain. </LI> <LI> We determined two new mitochondrial genome sequences of <I>Plectus</I>, the first representatives of the order Plectida. </LI> <LI> Mitochondrial genome trees depicted Plectida as the sister group to all other chromadorean nematodes (Rhabditida). </LI> <LI> The mitochondrial gene arrangement of <I>Plectus</I> is unique, and has no shared gene clusters with other chromadorean members. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kim, Jinbum,Choi, Seongheum,Park, Taejin,Kim, Jinyong,Kim, Chulsung,Cha, Taeho,Lee, Hyangsook,Lee, Eunha,Won, Jung Yeon,Lee, Hyung-Ik,Hyun, Sangjin,Kim, Sunjung,Shin, Dongsuk,Kim, Yihwan,Kwon, Keewon American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.1
<P>To synthesize a thermally robust Ni1-xPtxSi film suitable for ultrashallow junctions in advanced metal-oxide-semiconductor field-effect transistors, we used a continuous laser beam to carry out millisecond annealing (MSA) on a preformed Ni-rich silicide film at a-local surface temperature above 1000 degrees C while heating the substrate to initiate a phase transition. The melting and quenching process by this unique high-temperature MSA process formed a Ni1-xPtxSi film with homogeneous Pt distribution across the entire film thickness. After additional substantial thermal treatment up to 800 degrees C, the noble Ni1-xPtxSi film maintained a low-resistive phase without agglomeration and even exhibited interface flattening with the underlying Si substrate.</P>
Kim, Hoe Chul,Kim, Myung Jun,Choe, Seunghoe,Lim, Taeho,Park, Kyung Ju,Kim, Kwang Hwan,Ahn, Sang Hyun,Kim, Soo-Kil,Kim, Jae Jeong The Electrochemical Society 2014 Journal of the Electrochemical Society Vol.161 No.14
<P>The adsorption mechanism of thiourea (TU) and its effect on Cu electrodeposition were verified using TU derivatization. Contrary to the previously reported behavior of TU as an inhibitor, TU either promoted or inhibited Cu reduction according to the derivatization time. During the short derivatization time, the adsorbed TU with low surface coverage was oxidized to spontaneously reduce Cu<SUP>2+</SUP> to Cu<SUP>+</SUP>, thereby, accelerating the Cu deposition. However, TU inhibited the Cu deposition as the coverage of TU-Cu<SUP>+</SUP> increased with the derivatization time. Furthermore, a deterioration in the resistivity of the Cu film, which occurred when TU was added, was largely improved by the derivatization method while maintaining an enhancement in the film hardness. TU derivatization resulted in a 9.2% enhancement in the film hardness and only a 26.0% deterioration in the film resistivity compared to those of Cu films deposited in the absence of TU, which were not simultaneously obtainable upon the direct addition of TU to the deposition bath.</P>
김태호(Taeho Kim),김종현(Jonghyeon Kim),김성준(Sungjun Kim),김광호(Kwangho Kim),푸보(Bo Pu),나완수(Wansoo Nah) 한국전자파학회 2014 한국전자파학회논문지 Vol.25 No.5
본 논문에서는 4-포트 수평/수직 프로브 스테이션을 사용하여 수직 커넥터 핀의 특성 측정 시 사용되는 회로망 분석기의 교정용 키트(calibration kit)를 제안한다. 기존의 수평면에서 사용되는 교정키트를 사용하면, 교정 후 프로브 암의 변경 및 추가적인 장치가 필요하며, 이로 인한 시간 소요뿐 아니라, 주변 상황에 민감한 프로브 팁의 위치 변동에 기인한 정밀도 훼손의 위험이 있다. 본 논문에서는 이를 보완할 수 있는 4-포트 수평/수직 겸용 교정키트를 제시한다. 교정은 SOLT 방법을 이용하였으며, Short, Open, Load는 수평면에서 교정하며, Thru는 프로브의 위치에 따라서 교정기판의 같은 수평면에서 교정하거나 또는 교정기판의 위쪽, 아래쪽을 수직으로 연결하여 사용할 수 있도록 설계/제작하였다. 즉, 기판에 수직한 Thru를 교정할 때에는 교정키트를 수직으로 세워 키트 양면을 사용하여 교정할 수 있는 방법을 제안하였다. 제안한 교정키트에서의 SOLT 회로 반사/전달 특성을 기존 교정키트의 SOLT 회로의 반사/전달 특성과 비교 분석하였으며, 두 교정키트의 전달 특성은 길이 보정 후, 300 kHz부터 8.5 GHz까지 약 ±0.1 dB의 차이가 있음을 확인할 수 있었다. 이와 같이 설계/제작된 4-포트 수평/수직 교정키트의 유용성을 입증하기 위하여 각각 수평 측정의 경우와 수직 측정의 경우의 두 가지 경우 사례 연구를 수행하였으며, 그 결과를 기존의 교정키트를 사용한 후 측정된 결과 데이터와 비교 분석하였다. In this paper, we propose a horizontal/vertical calibration kit for calibrating a vector network analyzer(VNA) to measure the vertical connector pin. If the conventional calibration kit is used, we should change the arm for a probe or need an assistant device and it takes a long time. In addition there is a risk of precision degradation caused by the position change of the probe tip sensitive to the surroundings. We suggest a 4-port vertical calibration kit to make up for the aforementioned shortcomings. The calibration kit was manufactured for the SOLT calibration method. ‘Short’, ‘Open’, and ‘Load’ are available in the horizontal plane, ‘Thru’ is available not only in the horizontal plane on the two planes of a PCB, but in the vertical plane between the two planes according to the positions of the probes. We complemented the conventional calibration kit to make a vertical calibration kit to be used for the vertical measurement method. We compared and analysed their reflection/transfer characteristics of the SOLT calibration standards of the proposed calibration kit and conventional one, we get a ±0.1 dB differences of transfer characteristics in the range from 300 kHz to 8.5 GHz. In order to demonstrate usefulness, and we performed a case study for horizontal and vertical cases, and compared the results of the proposed calibration kit and conventional one.