Results 41 to 50 of about 27,129 (131)

A new species of Peckoltia (Siluriformes, Loricariidae) from the rapids of the Rio Tocantins‐Araguaia basin, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Here, we describe a new species of Peckoltia (Loricariidae; Hypostominae) from the rapids of the Rio Tocantins‐Araguaia basin, previously identified as Peckoltia vittata, using an integrative taxonomy approach. The new species is distinguished from congeners by ventral region presenting diffuse stripes on surface, not presenting spots or ...
Felipe Arian Andrade de Araújo   +3 more
wiley   +1 more source

Deciphering the complex life cycle and partial migration of an ecological engineer and critical Neotropical fishery species, Prochilodus costatus

open access: yesJournal of Fish Biology, EarlyView.
Abstract Understanding complex migration patterns, including drivers of partial migration and habitat use, is challenging but essential for conservation, as it determines a species' adaptative capacity in the face of environmental change and anthropogenic threats.
Alexandre Peressin   +6 more
wiley   +1 more source

Micro Hydroelectric Power Generation [PDF]

open access: yes, 2012
MICRO-HYDRO ELECTRIC POWER GENERATION Roberto Arraya Department of Chemical Engineering – Honors Thesis ABSTRACT A major industrial water user in New Mexico discharges approximately 3.8 million gal of wastewater per day.
Arraya Saenz, Roberto
core   +4 more sources

Impacts of Climate Change and Climate Variability on Hydropower Potential in Data-Scarce Regions Subjected to Multi-decadal variability [PDF]

open access: yes, 2019
To achieve sustainable development of hydroelectric resources, it is necessary to understand their availability, variability, and the expected impacts of climate change.
Bastien Dieppois   +8 more
core   +1 more source

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa   +8 more
wiley   +1 more source

Benchmarking of Advanced Control Strategies for a Simulated Hydroelectric System [PDF]

open access: yes, 2017
This paper analyses and develops the design of advanced control strategies for a typical hydroelectric plant during unsteady conditions, performed in the Matlab and Simulink environments.
ALVISI, Stefano   +3 more
core   +1 more source

A Hundred Thousand Darlingtons: Self‐Respect, Moral Judgement, and the Right to an Equal Democratic Say

open access: yesAnalytic Philosophy, EarlyView.
ABSTRACT I defend the non‐instrumentalist thesis that every adult member of a political society has a pro tanto fundamental moral right to an equal democratic say in determining the content of the laws to which she is subject. I begin by giving an account of an important kind of servility that has received only glancing notice in philosophical ...
Shruta Swarup
wiley   +1 more source

The Impacts of Weather Variability and Shocks on Farmers and Indigenous Peoples' Consumption: Evidence From Panama

open access: yesReview of Development Economics, EarlyView.
ABSTRACT Weather variability and shocks pose significant challenges for tropical developing countries, making it crucial to understand their effects on consumption to address the existing deficiencies among the most vulnerable groups. This study examines the impact of weather variability and shocks on household consumption in Panama, utilizing repeated
Ambar Lineth Chavez Espinosa   +1 more
wiley   +1 more source

Performance of a centrifugal pump running in inverse mode [PDF]

open access: yes, 2004
This paper presents the functional characterization of a centrifugal pump used as a turbine. It shows the characteristics of the machine involved at several rotational speeds, comparing the respective flows and heads.
Engeda A.   +5 more
core   +1 more source

Palaeoglacier reconstruction and dynamics of Cordillera Vilcanota in the tropical high Peruvian Andes

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 2, February 2026.
We provide a geomorphological analysis of Cordillera Vilcanota and use morphostratigraphic principles to reconstruct palaeo icefield extent and palaeoglacier readvances, likely during the Antarctic Cold Reversal and Younger Dryas. We find evidence of temperate and polythermal ice margins, with limited glaciofluvial landform generation.
Bethan Davies   +11 more
wiley   +1 more source

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