http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mandelic Acid 정량을 위한 은 나노입자에 의해 증가된 화학발광분석법
( Md R-mahmnur Alam ),( Mohammad Kamruzzaman ),김소연 ( So Yeon Kim ),조해진 ( Hae Jin Jo ),이상학 ( Sang Hak Lee ),김영호 ( Young Ho Kim ),최종하 ( Jong Ha Choi ) 한국공업화학회 2011 응용화학 Vol.15 No.1
A sensitive silver nanoparticles (Ag NPs) enhanced chemiluminescence (CL) method is reported for the determination of mandelic acid (MA). This method is based on the luminol-KIO4 system catalyzed by Ag NPs to produce CL spectra. Prepared Ag NPs were characterized by UV-visible spectra and TEM image. Under optimal condition, CL spectra of the system were responded linearly with the concentration of MA in the range of 2.5×10(-9) to 2.0×10(-8) mol L(-1)(r=0.9989) with a detection limit of 1.2×10(-10) mol L(-1). The relative standard deviation of 1.0×10(-7) mol L(-1) MA was found 1.45 (n=9).
김휘준 ( Kyung-sup Kim ),박길섭 ( Hui-joon Kim ),서영학 ( Kil-seop Park ),김경섭 ( Yeong-hak Seo ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.2
본 논문은 이미지 탐지 모델인 Faster R-CNN 을 통해 영유아가 존재하는 어린이 집, 공원, 놀이터, 거실 등의 2D 이미지를 읽어 영유아에게 위험이 되는 요소를 인식해 위험상황을 감지하는 시스템을 구현하였다. 실생활에서 쉽게 구할 수 있는 데이터를 바탕으로 탐지 모델을 구현 했으며 현재 머신 러닝 분야가 음성인식과 행위데이터를 기반으로 상용화 되어있는 반면 본 모델은 이미지를 데이터로 한 탐지 모델이 다양한 서비스 분야에서 활용 될 수 있음을 보여준다.
Kim, Eung-Seok,Kang, Sung-Hoon,Choi, Chung-Sik,Kim, Beom-Su,Lee, Sang-Dae,Kim, Woo-Kap,Kim, Hak-R. 한국곤충학회 1999 Entomological Research Vol.29 No.3
Apolipophorin-III (apoLp-III) was isolated from the last instar larval hemolymph of Spodoptera litura by cation exchange chromatography and reverse phase chromatography. Molecular mass of apoLp-III was estimated to be 18,266 daltons. Presence and exact localization of apoLp-III in both ovary and testis were identified by immunological analysis. In the earliest stage of ovary, apoLp-III is confined to the electron dense granules in the sheath cells between oogonia. During vitellogenesis, apoLp-III in the hemolymph is actively taken up into ovary through intercellular spaces between follicle cells and then stored in protein bodies in the ooplasm. After apoLp-III is taken up from the hemolymph into the basal portion of the vas deference, it is localized to electron dense granules on the apical surface of the vas deference epithelium. In in vitro culture study, after apoLp-III is actively synthesized in adult fat body, most of the synthesized apoLp -III is secreted to the medium.
Downregulation of Chicken Interleukin-17 Receptor A during <i>Eimeria</i> Infection
Kim, Woo H.,Jeong, Jipseol,Park, Ae R.,Yim, Dongjean,Kim, Suk,Chang, Hong H.,Yang, Seung-Hak,Kim, Dong-Hee,Lillehoj, Hyun S.,Min, Wongi American Society for Microbiology 2014 Infection and immunity Vol.82 No.9
<P>Both interleukin-17A (IL-17A) and IL-17F are proinflammatory cytokines that have an important role in intestinal homeostasis via receptor signaling. These cytokines have been characterized in chickens, but very little is known about their receptors and their functional activity. We provide here the first description of the sequence analysis, bioactivity, and comparative expression analysis of chicken IL-17RA (chIL-17RA) in chickens infected with <I>Salmonella</I> and <I>Eimeria</I>, two major infectious agents of gastrointestinal diseases of poultry of economic importance. A full-length chIL-17RA cDNA with a 2,568-bp coding region was identified from chicken thymus cDNA. chIL-17RA shares ca. 46% identity with mammalian homologues and 29.2 to 31.5% identity with its piscine counterparts. chIL-17RA transcript expression was relatively high in the thymus and in the chicken macrophage cell line HD11. The chIL-17RA-specific small interfering RNA inhibits interleukin-6 (IL-6), IL-8, and IL-1β mRNA expression in chicken embryo fibroblast cells (but not in DF-1 cells) stimulated with chIL-17A or chIL-17F. Interaction between chIL-17RA and chIL-17A was confirmed by coimmunoprecipitation. Downregulation of chIL-17RA occurred in concanavalin A- or lipopolysaccharide-activated splenic lymphocytes but not in poly(I·C)-activated splenic lymphocytes. In <I>Salmonella</I>- and <I>Eimeria</I>-infected chickens, the expression levels of the chIL-17RA transcript were downregulated in intestinal tissues from chickens infected with two <I>Eimeria</I> species, <I>E. tenella</I> or <I>E. maxima</I>, that preferentially infect the cecum and jejunum, respectively. However, chIL-17RA expression was generally unchanged in <I>Salmonella</I> infection. These results suggest that chIL-17RA has an important role in mucosal immunity to intestinal intracellular parasite infections such as <I>Eimeria</I> infection.</P>
Use of Time Reversal Techniques for Focusing of Ultrasonic Array Transducer Beams
Kim, Hak-Joon,Song, Sung-Jin,Thompson R. Bruce,Kim, Jae-Hee,Eom, Heung-Sup The Korean Society for Nondestructive Testing 2006 한국비파괴검사학회지 Vol.26 No.3
For enhancement of flaw detactability using array transducers, focusing of ultrasonic waves on a target in an inhomogeneous medium or through a complex geometry is important. But focusing can be strongly degraded by geometrical distortion of field radiated by the array transducers or by sound speed fluctuations in the propagating medium. In recent years, the time reversal technique has been proposed. Thus, in this paper, we describe the basic principal of the time reversal technique for focusing. Then, the implementation results of the time reversal technique for ultrasonic inspections using bulk waves and guided waves generated by array transducers are presented.
Kim,Hak Yong,Hanely,Michel R. The Korea Science and Technology Center 2000 BMB Reports Vol.33 No.3
The depletion of intracellular calcium stores by thapsigargin treatment evoked extracellular calcium-dependent membrane currents in Xenopus laevis oocytes. These currents have been compared to those evoked by microinjection of a calcium influx factor (CIF) purified from Jurkat T lymphocytes. The membrane currents elicited by thapsigargin treatment (peak current, 163±60 nA) or CIF injection (peak current, 897±188 nA) were both dependent on calcium entry, based o their eradication by the removal of extracellular calcium. The currents were, in both cases, attributed primarily to well-characterized Ca²+-dependent Cl- currents, based on their similar reversal potentials (-24 mV vs. -28 mV) and their inhibition by niflumic acid (a Cl²+ channel blocker). Currents induced by either thapsigargin treatment or CIF injection exhibited an identical pattern of inhibitory sensitivity to a panel of lanthanides, suggesting that thapsigargin treatment or CIF injection evoked Cl currents by stimulating calcium influx through pharmacologically identical calcium channels. These results indicate that CIF acts on the same calcium entry pathway activated by the depletion of calcium stores and most lanthanides are novel pharmacological tools for the study of calcium entry in Xenopus oocytes.