Results 61 to 70 of about 1,285,093 (191)

Modeling Ozone Source Apportionment and Performing Sensitivity Analysis in Summer on the North China Plain

open access: yesAtmosphere, 2020
In recent years, air quality issues due to fine particulate matter have been sufficiently treated. However, ozone (O3) has now become the primary pollutant in summer on the North China Plain (NCP).
Yujing Zhang   +8 more
doaj   +1 more source

Supersonic Shear Instabilities in Astrophysical Boundary Layers

open access: yes, 2011
Disk accretion onto weakly magnetized astrophysical objects often proceeds via a boundary layer that forms near the object's surface, in which the rotation speed of the accreted gas changes rapidly.
Belyaev, Mikhail, Rafikov, Roman
core   +1 more source

boundary layer

open access: yes, 2014
Citation: 'boundary layer' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.B00717 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

Evolution and meteorological causes of fine particulate explosive growth events in Beijing, China, from 2013 to 2017

open access: yesAtmospheric and Oceanic Science Letters, 2020
Based on online observations of fine particulate matter (PM2.5) for five consecutive years from January 2013 to December 2017 in Beijing, combined with simultaneous measurement of gaseous precursors and meteorological parameters, the evolution and ...
Shuzhen SHI   +5 more
doaj   +1 more source

Laser velocimeter measurements of high-speed compressible flows [PDF]

open access: yes, 1975
Laser velocimeter results were compared and found to be consistent with those obtained with conventional measurement techniques and existing compressible boundary layer theory.
Johnson, D. A.
core   +1 more source

Antecedent soil moisture prior to freezing can affect quantity, composition and stability of soil dissolved organic matter during thaw

open access: yesScientific Reports, 2017
There are large amounts of dissolved organic matter (DOM) released into the soil during spring thaw, but its bioavailability and components are still unknown.
Haohao Wu   +4 more
doaj   +1 more source

Tables for correcting airfoil data obtained in the Langley 0.3-meter transonic cryogenic tunnel for sidewall boundary-layer effects [PDF]

open access: yes
Tables for correcting airfoil data taken in the Langley 0.3-meter Transonic Cryogenic Tunnel for the presence of sidewall boundary layer are presented. The corrected Mach number and the correction factor are minutely altered by a 20 percent change in the
Adcock, J. B., Jenkins, R. V.
core   +1 more source

Ramp‐Like PM 2.5 Accumulation Process and Z‐Less Similarity in the Stable Boundary Layer

open access: yesGeophysical Research Letters, 2020
Similar ramp‐like structures exist in the time variations of surface PM 2.5 accumulation during the four different heavy haze pollution processes in Beijing, from 3 November 2017 to 15 January 2018.
Yu Shi, Fei Hu
doaj   +1 more source

A feasibility study of using Langley 0.3-m transonic cryogenic tunnel sidewall boundary-layer removal system for heavy gas testing [PDF]

open access: yes
This report presents the results of a preliminary study for using the 0.3-m Transonic Cryogenic Tunnel sidewall boundary-layer removal system with heavy gas sulfur hexafluoride as the test medium.
Balakrishna, S.   +2 more
core   +1 more source

The ISSI international study team on the martian PBL – status report and plan [PDF]

open access: yes, 2008
Dynamical processes in the Martian boundary layer provide the means of communication between surface ice deposits and the free atmosphere, and the means of lifting dust from the surface.
Galperin, B.   +13 more
core  

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