David E Graham Biosecurity Programs Lead Contact GRAHAMDE@ORNL.GOV All Publications Active layer hydrology in an arctic tundra ecosystem: quantifying water sources and cycling using water stable isotopes Geochemical drivers of organic matter decomposition in Arctic tundra soils... Pathways of anaerobic organic matter decomposition in tundra soils from Barrow, Alaska Surface Reflectance Degradation by Microbial Communities Direct determination of protonation states and visualization of hydrogen bonding in a glycoside hydrolase with neutron crysta... On the protonation states, hydrogen bonding and catalytic mechanism of family 11 glycosidases: Direct visualization with neut... In situ capping for size control of monochalcogenides (ZnS, CdS, and SnS) nanocrystals produced by anaerobic metal-reducing b... A microbial functional group-based module for simulating methane production and consumption: application to an incubated perm... Isotopic identification of soil and permafrost nitrate sources in an Arctic tundra ecosystem Indexing Permafrost Soil Organic Matter Degradation Using High-Resolution Mass Spectrometry Microtopographic and depth controls on active layer chemistry in Arctic polygonal ground... Stoichiometry and temperature sensitivity of methanogenesis and CO2 production from saturated polygonal tundra in Barrow, Alaska Direct determination of protonation states and visualization of hydrogen bonding in a glycoside hydrolase with neutron crystallography Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules... L-arabinose binding, isomerization, and epimerization by D-xylose isomerase: X-ray/neutron crystallographic and molecular simulation study Improvement of cellulose catabolism in Clostridium cellulolyticum by sporulation abolishment and carbon alleviation... Engineering Acidic Streptomyces rubiginosus D-Xylose Isomerase by Rational Enzyme Design X-ray Crystallographic Studies of Family 11 Xylanase Michaelis and Product Complexes: Implications for the Catalytic Mechanism of Retaining Glycoside Hydrolases Insights into archaeal evolution and symbiosis from the genomes of a Nanoarchaeon and its crenarchaeal host from Yellowstone National Park Heterologous expression, purification, crystallization and preliminary X-ray analysis of Trichoderma reesei Xylanase II and f... Nitrogen and Sulfur Requirements for Clostridium thermocellum and Caldicellulosiruptor bescii on Cellulosic Substrates in Minimal Nutrient Media Microbes in thawing permafrost: the unknown variable in the climate change equation... Combined inactivation of the Clostridium cellulolyticum lactate and malate dehydrogenase genes substantially increases ethano... Microbes in Thawing Permafrost: The Unknown Variable in the Climate Change Equation Label-free Quantitative Proteomics for the Extremely Thermophilic Bacterium Caldicellulosiruptor obsidiansis Reveal Distinct ... Pagination First page « First Previous page ‹‹ … Page 2 Current page 3 Page 4 Next page ›› Last page Last » Key Links Google Scholar Web of Science ORCID Publons NGEE Arctic Organizations Biological and Environmental Systems Science Directorate Biosciences Division
