Zobrazeno 1 - 10
of 111
pro vyhledávání: '"D R Walker"'
Autor:
S. Smith, K. E. Altieri, M. Mdutyana, D. R. Walker, R. G. Parrott, S. Gallie, K. A. M. Spence, J. M. Burger, S. E. Fawcett
Publikováno v:
Biogeosciences, Vol 19, Pp 715-741 (2022)
The production and removal of ammonium (NH4+) are essential upper-ocean nitrogen cycle pathways, yet in the Southern Ocean where NH4+ has been observed to accumulate in surface waters, its mixed-layer cycling remains poorly understood. For surface se
Externí odkaz:
https://doaj.org/article/fdc2bd67175745dcb6b0ab433c913b96
Autor:
D. R. Walker, A. M. Burzo, M. Y. Shverdin, Guang-Yu Yin, Stephen E. Harris, Alexei V. Sokolov, Deniz Yavuz
Publikováno v:
Journal of Modern Optics. 52:285-304
We have demonstrated that coherent molecular modulation can result in the collinear generation of mutually-coherent spectral sidebands that extend in frequency from the infrared to the far ultraviolet. Our technique is based on adiabatic preparation
Publikováno v:
International Journal of River Basin Management. 2:291-299
The reintroduction of riffle‐pool sequences has increasingly been promoted as an appropriate rehabilitation alternative for the re‐naturalization of modified gravel‐bed channels. However, in the absence of hydraulic design guidelines, enhanceme
Publikováno v:
Journal of Hydraulic Engineering. 130:199-207
Riffle reconstruction has become an important river rehabilitation technique in disturbed channels. However, design has often lacked sufficient hydraulic analysis to adequately assess the potential effects on flow resistance and flood levels. This pa
Publikováno v:
Physical Review Letters. 85:562-565
We use molecular deuterium and two driving lasers to demonstrate collinear generation of mutually coherent equidistant sidebands, covering $50000{\mathrm{cm}}^{\ensuremath{-}1}$ of spectral bandwidth and ranging from $2.94\ensuremath{\mu}\mathrm{m}$
Publikováno v:
American Journal of Public Health. 89:374-378
OBJECTIVES: A Centers for Disease Control and Prevention deviation bar chart (Statistical Software for Public Health Surveillance) and laboratory-based surveillance data were evaluated for their utility in detecting dengue outbreaks in Puerto Rico. M
Publikováno v:
Nucleic Acids Research. 27:1223-1242
A detailed analysis of protein domains involved in DNA repair was performed by comparing the sequences of the repair proteins from two well-studied model organisms, the bacterium Escherichia coli and yeast Saccharomyces cerevisiae, to the entire sets
Publikováno v:
Plant Health Progress. 14
Phakopsora pachyrhizi, the causal agent of Asian soybean rust (ASR), has the potential to cause severe yield losses as all currently grown U.S. commercial soybean varieties are susceptible. In this proteomics study, we compared two soybean sibling li
Publikováno v:
Applied Physics B. 60:309-312
We have demonstrated cw diode end pumping of Nd: KGW, a novel solid-state gain medium, with up to 30% conversion efficiency into near-TEM00 (M2 < 1.05) output atλ = 1.067 µm for a pump level of 2.7 W. The slope efficiency was limited by intracavity
Autor:
Cengiz Gebitekin, D R Walker, G Olgac, P. G. Martin, Chaudhry I, Yi Tian, N R Saunders, Satur Cm
Publikováno v:
European Journal of Cardio-Thoracic Surgery. 9:347-351
It is well established that patients with compromised pulmonary function have a greater incidence of morbidity and mortality following lung resection. The prognosis of 36 (9.7%) patients with poor respiratory function (forced expiratory volume in Is