The heterogeneous reactions of benzo[a]pyrene-d₁₂ (BaP-d₁₂), benzo[k]fluoranthene-d₁₂ (BkF-d₁₂), benzo[ghi]perylene-d₁₂ (BghiP-d₁₂), dibenzo[a,i]pyrene-d₁₄ (DaiP-d₁₄), and dibenzo[a,l]pyrene (DalP) with NO₂, NO₃/N₂O₅, and OH radicals were investigated at room temperature and atmospheric pressure in an indoor Teflon chamber and novel mono NO₂-DaiP, and mono NO₂-DalP products were identified. Quartz fiber filters (QFF) were used...
Ammonia oxidation is the first and rate-limiting step in nitrification and is dominated by two distinct groups of microorganisms in soil: ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB). AOA are often more abundant than AOB and dominate activity in acid soils. The mechanism of ammonia oxidation under acidic conditions has...
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Enabling Acidophily in the
Ammonia-Oxidizing Archaeon “Candidatus Nitrosotalea devanaterra”
Laura E
The Antarctic contribution to sea level is a balance between ice loss along the margin and accumulation in the interior. Accumulation records for the past few decades are noisy and show inconsistent relationships with temperature. We investigate the relationship between accumulation and temperature for the past 31 ka using high-resolution records...
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. Markle, K. M. Cuffey,
C. Buizert, K. C. Taylor, E. J. Steig, E. D.
Waddington, H. Conway, andM. Koutnik
Four new elaiophylin macrolides (1–4), together with five known elaiophylins (5–9), have been isolated from cultures of the Indonesian soil bacterium Streptomyces sp. ICBB 9297. The new compounds have macrocyclic skeletons distinct from those of the known dimeric elaiophylins in that one or both of the polyketide chains contain(s) an...
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, 4 nm
A (8)
B (5)
C (3)
D
E
F (6)
G H
I (9) K (1)
L (2)
m/z 1033
m/z 1047
m/z
The American Land Institute is proud to present this study, Oregon’s Public Investment in Conservation, Prosperity and Fairness. This is the first major study on a topic that has been largely overlooked in past and current discussions of land use law in Oregon: the nature and extent of property tax...
Programming style is important for program understanding in programming tasks such as maintenance. testing, and debugging. The goal of programming style is to improve the readability of the source program without adversely affecting its performance.
Critique is a FORTRAN source program style critic which analyzes the source program and outputs...
With sequential computing technology reaching its speed limits, parallel processing is emerging as the key to very-high-speed computation. However, developing a parallel program is by no means a simple task; neither is analyzing the performance of parallel programs.
C* is a high-level data-parallel language that hides explicit message passing and...
The reaction of fluid or gas flowing around an obstacle is a common engineering problem. Computer simulations are often used to measure and visualize the physical processes involved. In this report, we will discuss a parallel implementation of a simulation using the Smooth Particle Hydrodynamics (SPH) approach to fluid flow....
Graphical methods for displaying uncertainty are often the most concise and informative way to communicate abstract concepts. Presentation methods currently in use for the display and interpretation of scientific uncertainty are reviewed. Numerous subjective and objective uncertainty display methods are presented, including qualitative assessments, node and arrow diagrams, standard statistical...
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exceptions (e,g. Gigerenzer and Hoffrage 1995; MacGregor
and Slovic 1986; Wickens et al. 2000), but little