Results 181 to 190 of about 235,541 (290)
Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa +4 more
wiley +1 more source
Subsistence Through Disappearance: Theology of the Unseen in the Films of Michelangelo Antonioni
ABSTRACT The present study contends that the theology of Michelangelo Antonioni's 1960s cinema is structured by a reductio ad absurdum logic, whereby the presence of certain qualities is proven by the portrayal of their absence. It is argued that Antonioni's intention to show what is by specifying what is not may have been rooted in a modernist ...
Vuk Uskoković
wiley +1 more source
Athletes Who Test Positive on Multiple Domains of the Vestibular-Ocular Motor Screen Take Longer to Return to Play. [PDF]
Lee BJ +6 more
europepmc +1 more source
In the subhumid, wetland‐rich, geologically heterogeneous Boreal Plains region of Canada, we found several controls on stream DOC concentration ([DOC]) and DOM composition: An increase in [DOC] and aromaticity as temperature increases throughout the summer, with temperature trend prevailing over the influence of discharge.
Julia Orlova +3 more
wiley +1 more source
Network Connectivity and Local Hydrology Drive DOM Composition in a Nonperennial Stream
Abstract Nonperennial streams are dynamic sites of biogeochemical processing, yet much remains to be learned about how hydrologic connectivity at different spatial and temporal scales impacts the composition of dissolved organic matter (DOM). We characterized spatial and temporal patterns of DOM composition in a nonperennial prairie stream network ...
Sarah M. Flynn +7 more
wiley +1 more source
Ironing out the question: what is limiting cyanobacteria in freshwater lakes in the Prairie Pothole Region? [PDF]
Creed IF, Salmon O, Erratt KJ, Trick CG.
europepmc +1 more source
In‐Lake GHG Production Constrained by Lake DOM Mass Balance in a Boreal Catchment
Abstract The processing of organic carbon in surface waters represents a critical component of the carbon (C) cycle in boreal landscapes and is closely linked to greenhouse gas (GHG) emissions, primarily carbon dioxide (CO2) and methane (CH4). Utilizing a unique data set with dense monitoring of dissolved organic carbon (DOC), dissolved CO2, and CH4 at
Xiang Lu +7 more
wiley +1 more source
Toward Socio‐Legal Geographies of Fire
ABSTRACT Human and physical geographers alike have long called for a shift toward the study of fire that re‐politicizes geographies of fire and pyrogeographies. Whether through centering the role of fire in the Anthropocene, proposing the pyrocene to interrogate our current epoch, or looking at the aftermath and governance of fire to better understand ...
Onyx Sloan Morgan
wiley +1 more source

