Results 21 to 30 of about 1,229,399 (284)

The spatial relationship between patterns of disappeared streams and residential development in Portland, Oregon, USA

open access: yesJournal of Maps, 2022
Disappeared streams are streams that have been buried, removed, or moved as part of the urbanization process. We identified disappeared streams in the Portland, Oregon metropolitan area using historical topographic maps for four time periods, and related
Gregory C. Post   +2 more
doaj   +1 more source

On the behaviour of streams in angle and frequency spaces in different potentials [PDF]

open access: yes, 2016
We have studied the behaviour of stellar streams in the Aquarius fully cosmological N-body simulations of the formation of Milky Way halos. In particular, we have characterised the streams in angle/frequency spaces derived using an approximate but ...
Buist, Hans J. T., Helmi, Amina
core   +2 more sources

A new species of Cincticostella Allen, 1971 (Ephemeroptera, Ephemerellidae) from Yunnan, China and establishment of a new species complex [PDF]

open access: yesZooKeys
Cincticostella jianchuan sp. nov. from Dali Bai Autonomous Prefecture, Yunnan Province, China, is described based on chorionic structure, nymph, and winged stages. The new species is closely related to C.
Ye-Kang Sun   +4 more
doaj   +3 more sources

Stream Reasoning [PDF]

open access: yes, 2017
Stream Reasoning refers to inference approaches and deduction mechanisms which are concerned with providing continuous inference capabilities over dynamic data. The paradigm shift from current batch-like approaches towards timely and scalable stream reasoning leverages the natural temporal order in data streams and applies windows-based processing to ...
Mileo, Alessandra   +3 more
openaire   +1 more source

On the Stability of Tidal Streams [PDF]

open access: yes, 2011
We explore the stability of tidal streams to perturbations, motivated by recent claims that the clumpy structure of the stellar streams surrounding the globular cluster Palomar 5 are the result of gravitational instability.
Moore, Ben, Schneider, Aurel
core   +1 more source

Hydrological Mapping in the Luquillo Experimental Forest: New Local Datum Improves Watershed Ecological Knowledge

open access: yesHydrology, 2021
Streams and rivers of the Luquillo Experimental Forest, Puerto Rico, have been the subject of extensive watershed and aquatic research since the 1980s. This research includes understanding stream export of nutrients and coarse particulate organic matter,
Miguel C. Leon   +3 more
doaj   +1 more source

Optimal waste stream discharge temperature selection for dryer operations using thermo-economic assessment [PDF]

open access: yes, 2012
A typical drying process that has liquid and gas discharge streams has been analysed and the impact of selecting various combinations of soft temperatures on heat recovery, utility targets, area targets, capital cost and total cost is reported.
Atkins, Martin John   +4 more
core   +2 more sources

A Modification of the Biotic Index of Organic Stream Pollution to Remedy Problems and Permit Its Use Throughout the Year [PDF]

open access: yes, 2018
The biotic index of the arthropod fauna of streams is modified by limiting to ten the number of individuals in each taxon used in its calculation. This reduces detrimental effects on the index of certain fairly tolerant taxa in clean streams, effects of ...
Hilsenhoff, William L
core   +2 more sources

Characterization of Stream Meanders for Stream Restoration [PDF]

open access: yesJournal of Hydraulic Engineering, 1997
Recently increased emphasis and attention has been given to river management and restoration of modified streams. A variety of restoration techniques and objectives exist, including asymmetrical cross-section construction, point bar development, two-stage channel design, floodplain approaches, pools and riffles re-creation, and sinuosity and meander ...
RINALDI, MASSIMO, Johnson P. A.
openaire   +2 more sources

Beaver Colony Density Trends on the Chequamegon-Nicolet National Forest, 1987 - 2013. [PDF]

open access: yesPLoS ONE, 2017
The North American beaver (Castor canadensis) is a managed species in the United States. In northern Wisconsin, as part of the state-wide beaver management program, the Chequamegon-Nicolet National Forest removes beavers from targeted trout streams on U ...
Christine A Ribic   +5 more
doaj   +1 more source

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