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Extratropical cyclone climatology across eastern Canada
Plante, Mathieu,Son, Seok‐,Woo,Atallah, Eyad,Gyakum, John,Grise, Kevin John Wiley Sons, Ltd 2015 International journal of climatology Vol.35 No.10
<P><B>ABSTRACT</B></P><P>Extratropical cyclone (ETC) tracks across eastern Canada are examined by applying a Lagrangian tracking algorithm to the lower‐tropospheric relative vorticity field of reanalysis data. Both the seasonal cycle and the interannual variability of ETCs are quantified in terms of overall cyclone frequency, intensity, and regions of development and decay. We find that ETCs travelling to eastern Canada tend to develop over the Rockies, the Great Lakes and the US East Coast. The ETCs are most intense over Newfoundland and the North Atlantic Ocean, confirming previous findings. While ETCs at cities along the Atlantic coastline (e.g. St. John's) are dominated by East Coast cyclones (which are intense in winter), those inland (e.g. Toronto) track primarily from the Great Lakes. ETCs that develop over the Gulf of Mexico affect eastern Canada infrequently, but those that do tend to be intense. The interannual variability of the wintertime ETCs is influenced by the El Niño‐Southern Oscillation (ENSO). Significant ENSO‐related variability is found over most regions of southern Canada, except on the east coast. Although ETCs at Toronto are significantly modulated by ENSO, no visible changes are found at St. John's. These ENSO‐related ETC changes are mostly due to the shifts in ETC development regions, with minor changes in the travelling direction of ETCs.</P>
Kwon, Sun-Jung,Park, Mi-Ri,Kim, Ki-Woo,Plante, Carol A.,Hemenway, Cynthia L.,Kim, Kook-Hyung Elsevier 2005 Virology Vol.334 No.1
<P><B>Abstract</B></P><P>The 5′ region of <I>Potato virus X</I> (PVX) RNA containing an AC-rich single-stranded region and stem–loop 1 (SL1) has been shown to be important for PVX replication (Miller, E.D., Plante, C.A., Kim, K.-H., Brown, J.W., Hemenway, C., 1998. Stem–loop structure in the 5′ region of potato virus X genome required for plus-strand RNA accumulation. J. Mol. Biol. 284, 591–608.). Here, we describe the involvement of SL1 for binding to the PVX coat protein (CP) using an in vitro assembly system and various deletion mutants of the 5′ region of PVX RNA. Internal and 5′ terminal deletions of the 5′-nontranslated region of PVX RNA were assessed for their effects on formation of assembled virus-like particles (VLPs). Mutant RNAs that contain the top region of SL1 or sequences therein bound to CP to form VLPs. In contrast, transcripts of mutants that disrupt SL1 RNA structure were unable to form VLPs. SELEX was used to further confirm the specific RNA recognition of PVX CP using RNA transcripts containing randomized sequences of the upper portion of SL1. Wild-type (wt) sequences along with many other sequences that resemble SL1 structure were selected after fourth and fifth rounds of SELEX (27.0% and 44.4%, respectively). RNA transcripts from several SELEX winners that are predicted to form stable stem–loop structures very closely resembling wt PVX SL1 VLPs. RNA transcripts not predicted to form secondary structures similar to SL1 did not form VLPs in vitro. Taken together, our results suggest that RNA secondary structural elements within SL1 and/or sequences therein are crucial for formation of VLPs and are required for the specific recognition by the CP subunit.</P>
Potential for Novel Magnetic Structures by Nanowire Growth Mechanisms
R. R. LaPierre,M. C. Plante 한국자기학회 2005 Journal of Magnetics Vol.10 No.3
GaAs nanowires were grown on GaAs (111)B substrates in a gas source molecular beam epitaxy system, using self-assembled Au particles with diameters between 25 and 200 ㎚ as the catalytic agents. The growth rate and structure of the nanowires were investigated for substrate temperatures between 500 and 600 ℃ to study the mass transport mechanisms that drive the growth of these crystals. The possibilities for fabrication of novel magnetic nanostructures by suitable choice of growth conditions are discussed.
Jay Yatulis,Ryan Butler,Mathew Higgins,La Plante Curtis,Soo Joh Chae,Chul Gyu Jhun,Woo Young Kim 대한금속재료학회 ( 구 대한금속학회 ) 2009 ELECTRONIC MATERIALS LETTERS Vol.5 No.4
This research entailed the development of cost effective method to re-size LCD glass with a Mean Time to Failure (MTF) of greater than or equal to uncut glass. A Carbon Dioxide laser was completed on a standard 3-axis materials processing platform with alignment tolerances of up to 50 microns. The many key cutting factors and the variables that generated the most success included the operation of the laser in pulsed mode, the incorporation of a dry Nitrogen gas assist at close proximity to the LCD glass, relatively slow translational speeds, and laser output powers of up to up to 7 Joule 20ns pulse widths before focusing optics were used. Only at these higher output powers could the display be completely penetrated with minimal thermal damage, but in conjunction with the slower translational speeds and moderate gas assists pressures of approximately 15PSI, adequate cooling was provided to salvage most types of LCD technologies tested.
Sagittal Balance Correction Following Lumbar Interbody Fusion: A Comparison of the Three Approaches
Pierre-Olivier Champagne,Camille Walsh,Jocelyne Diabira,Marie-Élaine Plante,Zhi Wang,Ghassan Boubez,Daniel Shedid 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.3
Study Design: Retrospective cohort study. Purpose: The objective of this study was to compare three widely used interbody fusion approaches in regard to their ability to correct sagittal balance, including pelvic parameters. Overview of Literature: Restoration of sagittal balance in lumbar spine surgery is associated with better postoperative outcomes. Various interbody fusion techniques can help to correct sagittal balance, with no clear consensus on which technique offers the best correction. Methods: The charts and imaging of patients who have undergone surgery through either open transforaminal lumbar interbody fusion (TLIF), minimally invasive TLIF (MIS TLIF), or oblique lumbar interbody fusion (OLIF) were retrospectively reviewed. The following sagittal balance parameters were measured pre- and postoperatively: segmental lordosis, lumbar lordosis, disk height, pelvic tilt, and pelvic incidence. Data on postoperative complications were gathered. Results: Only OLIF managed to significantly improve segmental lordosis (4.4°, p<0.001) and lumbar lordosis (4.8°, p=0.049). All approaches significantly augmented disk height, with OLIF having the greatest effect (3.7°, p<0.001). No approaches were shown to significantly correct pelvic tilt. Pelvic incidence remained unchanged in all approaches. Open TLIF was the only approach with a higher rate of postoperative complications (33%, p=0.009). Conclusions: The OLIF approach might offer greater correction of sagittal balance over open and MIS TLIF, mainly in regard to segmental lordosis, lumbar lordosis, and disk height. MIS TLIF, although offering more limited access than open TLIF, was not inferior to open TLIF in regard to sagittal balance correction. A higher rate of complications was shown for open TLIF than the other approaches, possibly due to its more invasive nature.
MOLECULAR CLONING AND CHARACTERIZATION OF A β-1,3-GLUCANASE INDUCED BY WOUNDING AND FUNGAL ELICITOR
Cheong, Yong-Hwa,Kim, Cha-Young,Chun, Hyun-Jin,Han, Chang-Deok,Hong, Jong-Chan,Bahk, Jeong-Dong,Cho, Moo-Je Plant Molecular Biology & Biotechnology Research C 1995 Plant molecular biology and biotechnology research Vol.1995 No.