Institution
United States Department of Energy
Government•Washington D.C., District of Columbia, United States•
About: United States Department of Energy is a government organization based out in Washington D.C., District of Columbia, United States. It is known for research contribution in the topics: Coal & Catalysis. The organization has 13656 authors who have published 14177 publications receiving 556962 citations. The organization is also known as: DOE & Department of Energy.
Topics: Coal, Catalysis, Combustion, Oxide, Hydrogen
Papers published on a yearly basis
Papers
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TL;DR: A generalized solid-state nudged elastic band (G-SSNEB) method is presented for determining reaction pathways of solid-solid transformations involving both atomic and unit-cell degrees of freedom and it is demonstrated that the method is robust for mechanisms dominated either by atomic motion or by unit- cell deformation.
Abstract: A generalized solid-state nudged elastic band (G-SSNEB) method is presented for determining reaction pathways of solid–solid transformations involving both atomic and unit-cell degrees of freedom. We combine atomic and cell degrees of freedom into a unified description of the crystal structure so that calculated reaction paths are insensitive to the choice of periodic cell. For the rock-salt to wurtzite transition in CdSe, we demonstrate that the method is robust for mechanisms dominated either by atomic motion or by unit-cell deformation; notably, the lowest-energy transition mechanism found by our G-SSNEB changes with cell size from a concerted transformation of the cell coordinates in small cells to a nucleation event in large cells. The method is efficient and can be applied to systems in which the force and stress tensor are calculated using density functional theory.
687 citations
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University of Pretoria1, Universidade Católica de Brasília2, Empresa Brasileira de Pesquisa Agropecuária3, Oak Ridge National Laboratory4, United States Department of Energy5, Joint Genome Institute6, Ghent University7, Institut national de la recherche agronomique8, University of Toulouse9, University of British Columbia10, University of Münster11, University of Düsseldorf12, Oregon State University13, Federal University of Rio de Janeiro14, University of São Paulo15, Australian National University16, Indian Institute of Chemical Technology17, University of Arizona18, Universidade Federal de Viçosa19, Universidade Federal do Rio Grande do Sul20, Department of Environment and Primary Industries21, University of Melbourne22, University of Tasmania23, University of the Sunshine Coast24, University of Brasília25
TL;DR: Of 36,376 predicted protein-coding genes, 34% occur in tandem duplications, the largest proportion thus far in plant genomes, which shows the highest diversity of genes for specialized metabolites such as terpenes that act as chemical defence and provide unique pharmaceutical oils.
Abstract: Eucalypts are the world's most widely planted hardwood trees. Their outstanding diversity, adaptability and growth have made them a global renewable resource of fibre and energy. We sequenced and assembled >94% of the 640-megabase genome of Eucalyptus grandis. Of 36,376 predicted protein-coding genes, 34% occur in tandem duplications, the largest proportion thus far in plant genomes. Eucalyptus also shows the highest diversity of genes for specialized metabolites such as terpenes that act as chemical defence and provide unique pharmaceutical oils. Genome sequencing of the E. grandis sister species E. globulus and a set of inbred E. grandis tree genomes reveals dynamic genome evolution and hotspots of inbreeding depression. The E. grandis genome is the first reference for the eudicot order Myrtales and is placed here sister to the eurosids. This resource expands our understanding of the unique biology of large woody perennials and provides a powerful tool to accelerate comparative biology, breeding and biotechnology.
679 citations
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TL;DR: One category of functional sequences postulated to lie in gene deserts is gene regulatory sequences, which are related to transcriptional regulation and regulation of transcriptional reprograming.
Abstract: Approximately 25% of the genome consists of gene-poor regions greater than 500 kb, termed gene deserts ([ 1 ][1]). These segments have been minimally explored, and their functional significance remains elusive. One category of functional sequences postulated to lie in gene deserts is gene regulatory
644 citations
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TL;DR: This work compares the genome sequences of two bacteria, Photobacterium angustum S14 and Sphingopyxis alaskensis RB2256, that serve as useful model organisms for copiotrophic and oligotrophic modes of life and relates the genomic features to trophic strategy for these organisms and defines their molecular mechanisms of adaptation.
Abstract: Many marine bacteria have evolved to grow optimally at either high (copiotrophic) or low (oligotrophic) nutrient concentrations, enabling different species to colonize distinct trophic habitats in the oceans. Here, we compare the genome sequences of two bacteria, Photobacterium angustum S14 and Sphingopyxis alaskensis RB2256, that serve as useful model organisms for copiotrophic and oligotrophic modes of life and specifically relate the genomic features to trophic strategy for these organisms and define their molecular mechanisms of adaptation. We developed a model for predicting trophic lifestyle from genome sequence data and tested >400,000 proteins representing >500 million nucleotides of sequence data from 126 genome sequences with metagenome data of whole environmental samples. When applied to available oceanic metagenome data (e.g., the Global Ocean Survey data) the model demonstrated that oligotrophs, and not the more readily isolatable copiotrophs, dominate the ocean's free-living microbial populations. Using our model, it is now possible to define the types of bacteria that specific ocean niches are capable of sustaining.
642 citations
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TL;DR: This experimental verification of negative refraction of electromagnetic waves in a two-dimensional dielectric photonic crystal that has a periodically modulated positive permittivity and a permeability of unity is demonstrated.
Abstract: Materials that can bend light in the opposite direction to normal ('left-handed' materials) reverse the way in which refraction usually works — this negative refractive index is due to simultaneously negative permeability and permittivity1,2,3. Here we demonstrate negative refraction of electromagnetic waves in a two-dimensional dielectric photonic crystal that has a periodically modulated positive permittivity and a permeability of unity4,5,6. This experimental verification of negative refraction is a step towards the realization of a 'superlens' that will be able to focus features smaller than the wavelength of light.
635 citations
Authors
Showing all 13660 results
Name | H-index | Papers | Citations |
---|---|---|---|
Martin White | 196 | 2038 | 232387 |
Paul G. Richardson | 183 | 1533 | 155912 |
Jie Zhang | 178 | 4857 | 221720 |
Krzysztof Matyjaszewski | 169 | 1431 | 128585 |
Yang Gao | 168 | 2047 | 146301 |
David Eisenberg | 156 | 697 | 112460 |
Marvin Johnson | 149 | 1827 | 119520 |
Carlos Escobar | 148 | 1184 | 95346 |
Joshua A. Frieman | 144 | 609 | 109562 |
Paul Jackson | 141 | 1372 | 93464 |
Greg Landsberg | 141 | 1709 | 109814 |
J. Conway | 140 | 1692 | 105213 |
Pushpalatha C Bhat | 139 | 1587 | 105044 |
Julian Borrill | 139 | 387 | 102906 |
Cecilia Elena Gerber | 138 | 1727 | 106984 |