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12인치 Wafer Final Polishing 장비 개발
박종권,우에다,이상열,신현성 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-
In this paper, we reported a final polishing machine for 300 mm bare wafer. The final polishing system of bare 300 mm wafer is developed for replacing multistage polishing and grinding process with high quality of flatness required in 0.13 ㎛ design rule. The machine had three polishing tables and eight rotating heads that carries wafers attached on a indexing column so that three steps of the process were possible. The machine structure and components were designed and developed with support of numerical analysis for static and dynamic characteristics. The prototype built with utilities were tested, and the results of surface quality and flatness were discussed.
Poster Session : Role of the C-terminal amino acids in β2-microglobulin amyloid formation
( J Kim ),( Motomiya Y ),( Ueda M ),( Nakamura M ),( Saito S ),( Misumi Y ),( Himeno S ),( Obayashi K ),( Shinriki S ),( Meung W ),( Sengba U ),( Kai H ),( Ando Y ) 한국생화학분자생물학회 (구 한국생화학회) 2007 생화학분자생물학회 춘계학술발표논문집 Vol.2007 No.-
Lee, J.,Miyanaga, Y.,Ueda, M.,Hohng, S. Biophysical Society ; Published for the Biophysica 2012 Biophysical journal Vol.103 No.8
There is no confocal microscope optimized for single-molecule imaging in live cells and superresolution fluorescence imaging. By combining the swiftness of the line-scanning method and the high sensitivity of wide-field detection, we have developed a, to our knowledge, novel confocal fluorescence microscope with a good optical-sectioning capability (1.0 μm), fast frame rates (<33 fps), and superior fluorescence detection efficiency. Full compatibility of the microscope with conventional cell-imaging techniques allowed us to do single-molecule imaging with a great ease at arbitrary depths of live cells. With the new microscope, we monitored diffusion motion of fluorescently labeled cAMP receptors of Dictyostelium discoideum at both the basal and apical surfaces and obtained superresolution fluorescence images of microtubules of COS-7 cells at depths in the range 0-85 μm from the surface of a coverglass.
Pan, J.,Suzuki, T.,Ueda, K.,Tanaka, K.,Okubo, M. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.12
A study was made of diurnal changes in the ruminal bacteria associated with feed particles, i.e., non-associated (NAB), loosely associated (LAB), and tightly associated with particles (TAB), and the TAB concentration in different particle sizes from sheep fed orchardgrass (OG) or alfalfa (ALF) hay. Diaminopimelic acid (DAPA) was used to determine the TAB mass. Results showed that the bacterial masses in NAB and LAB were small, but comprised over 90% in TAB. The TAB mass in the ALF group sharply increased within 2 h after feeding and decreased afterward. The TAB mass showed the same trend in the OG group, increasing from 0 h to 2 h, but remained at the same level up to 14 h after feeding. The peak bacterial mass was, however, lower in the OG than the ALF group. The TAB concentration reflected the changes in total particulate tightly associated bacterial masses in both groups of hay fed sheep. Number of bacterial colonies per particle increased as the particulate size decreased in both groups. This difference, however, tended to decline as the postprandial period was prolonged. DAPA, however, tended to overestimate the TAB mass in the reticulo-rumen digesta of the hay fed sheep.
Synthesis and Study of Redox-Active Acyclic Triazenes: Toward Electrochromic Applications
Ono, Robert J.,Suzuki, Yasuo,Khramov, Dimitri M.,Ueda, Mitsuru,Sessler, Jonathan L.,Bielawski, Christopher W. American Chemical Society 2011 Journal of organic chemistry Vol.76 No.9
<P>Coupling of various 4-substituted phenyl azides with two distinct quinone-containing N-heterocyclic carbenes (NHCs) afforded the respective mono- and ditopic 1,3-disubstituted acyclic triazenes in moderate to excellent yields (38−92%). Depending on their pendant substituents (derived from the azides), the acyclic triazenes exhibited intense absorptions in the visible spectrum (359−428 nm), which were bathochromically shifted by up to Δλ = 68 nm upon reduction of the quinone moiety on the component derived from the NHC. Cyclic voltammetry confirmed that the aforementioned redox processes were reversible, and a related set of UV−vis spectroelectrochemical experiments revealed that bulk electrolysis may also be used to switch reversibly the colors exhibited by these triazenes.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/joceah/2011/joceah.2011.76.issue-9/jo200139f/production/images/medium/jo-2011-00139f_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jo200139f'>ACS Electronic Supporting Info</A></P>
Muramatsu, T.,Hatano, T.,Ueda, Y.,Furuse, M.,Okumura, J. Asian Australasian Association of Animal Productio 1994 Animal Bioscience Vol.7 No.2
Three experiments were conducted with female Japanese Saanen goats to investigate the effects of rumen protected methionine (RPMet) on N utilization and whole-body protein turnover. Whole-body leucine flux from which whole-body protein turnover rates were derived was measured by primed- continuous infusion of L-[$^{15}N$] leucine in combination with gas chromatography-mass spectrometry. Throughout the experiments RPMet was added to a diet to supply 1.5 g DL-methionine per goat per day. Irrespective of the major N sources (i.e., protein or urea) in the diet, both N deposition and whole-body protein synthesis were increased (p<0.05), and urinary N excretion was decreased (p<0.05) by supplementing with RPMet, but not by supplementing with methionine. It was concluded, therefore, that under the present experimental conditions, the RPMet supplement was efficiently bypassed to result in enhanced body protein synthesis of the goat.
STUDIES ON METHIONINE METABOLISM IN THE RUMEN BACTERIA OF GOATS
Muramatsu, T.,Numa, M.,Ueda, Y.,Furuse, M.,Okumura, J.,Samukawa, K. Asian Australasian Association of Animal Productio 1994 Animal Bioscience Vol.7 No.2
The metabolic fate of methionine in rumen bacteria was studied by intraruminal administration of $^{15}N$ and $1-^{13}C$ labeled methionine in goats. Time course changes in isotopic abundance of amino acids in the rumen bacteria were determined with a computer-controlled gas-chromatograph mass spectrometer. The results from the transition of peak isotopic abundance in amino acids indicated that in rumen bacteria the $^{15}N$ or $^{13}C$ isotope in the methionine molecule was transferred rapidly to into bacteria, methionine administered intraruminally may not be retained as it is, but would be converted quickly to other metabolites in the bacteria.