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- 저자 : Le Long V. (검색결과 3 건)
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Reducing or eliminating noise in ellipsometric spectra
Le Long V.,Kim Tae Jung,김영동,Aspnes David E. 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.81 No.5
In the last several years, considerable progress has been made in reducing or eliminating noise in ellipsometric spectra, including the development of algorithms for eliminating endpoint-discontinuity artifacts, a reciprocal-space expression for quantifying the efectiveness of linear flters, and the corrected maximum-entropy (CME) approach for eliminating apodization and its associated errors. These lead to new capabilities, together with additional opportunities for extracting information from spectra. These results enhance the utility of ellipsometry for analyzing surfaces, interfaces, materials, and structures. Examples are provided.
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Chi H. Le,Oanh T.T. Nguyen,Hieu S. Nguyen,Long D. Pham,Chung V. Hoang 한국물리학회 2017 Current Applied Physics Vol.17 No.11
Urchin-like nanostructures of ZnO were synthesized by one-step hydrothermal method and their morphology was optimized via the hydrothermal temperature - the key parameter in controlling the morphologies of the ZnO materials. The photoabsorbance of the urchin-like ZnO nanomaterials was expanded from the intrinsic UV absorption range to the visible region by depositing the plasmonic Au nanoparticles (AuNPs) on the ZnO surface. The synthesized visible-active AuNPs-ZnO urchin-like composite material showed an excellent photocatalytic activity. As a result of the shape effect, the impact of the AuNPs on the photocatalytic activity of the urchin-like ZnO is found to increase about 30% in comparison to that of the reported conventional ZnO nanorods.
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Dalloul, Rami A.,Long, Julie A.,Zimin, Aleksey V.,Aslam, Luqman,Beal, Kathryn,Ann Blomberg, Le,Bouffard, Pascal,Burt, David W.,Crasta, Oswald,Crooijmans, Richard P. M. A.,Cooper, Kristal,Coulombe, Rog Public Library of Science 2010 PLoS biology Vol.8 No.9
<P>A synergistic combination of two next-generation sequencing platforms with a detailed comparative BAC physical contig map provided a cost-effective assembly of the genome sequence of the domestic turkey (<I>Meleagris gallopavo</I>). Heterozygosity of the sequenced source genome allowed discovery of more than 600,000 high quality single nucleotide variants. Despite this heterozygosity, the current genome assembly (∼1.1 Gb) includes 917 Mb of sequence assigned to specific turkey chromosomes. Annotation identified nearly 16,000 genes, with 15,093 recognized as protein coding and 611 as non-coding RNA genes. Comparative analysis of the turkey, chicken, and zebra finch genomes, and comparing avian to mammalian species, supports the characteristic stability of avian genomes and identifies genes unique to the avian lineage. Clear differences are seen in number and variety of genes of the avian immune system where expansions and novel genes are less frequent than examples of gene loss. The turkey genome sequence provides resources to further understand the evolution of vertebrate genomes and genetic variation underlying economically important quantitative traits in poultry. This integrated approach may be a model for providing both gene and chromosome level assemblies of other species with agricultural, ecological, and evolutionary interest.</P><P><B>Author Summary</B></P><P>In contrast to the compact sequence of viruses and bacteria, determining the complete genome sequence of complex vertebrate genomes can be a daunting task. With the advent of “next-generation” sequencing platforms, it is now possible to rapidly sequence and assemble a vertebrate genome, especially for species for which genomic resources—genetic maps and markers—are currently available. We used a combination of two next-generation sequencing platforms, Roche 454 and Illumina GAII, and unique assembly tools to sequence the genome of the agriculturally important turkey, <I>Meleagris gallopavo</I>. Our draft assembly comprises approximately 1.1 gigabases of which 917 megabytes are assigned to specific chromosomes. Comparisons of the turkey genome sequence with those of the chicken, <I>Gallus gallus</I>, and the zebra finch, <I>Taeniopygia guttata</I>, provide insights into the evolution of the avian lineage. This genome sequence will facilitate discovery of agriculturally important genetic variants.</P>
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