Results 61 to 70 of about 175,310 (205)

Anatomía e Histología de los Ciegos Pilóricos en Cinco Especies de Peces de la Familia Characidae

open access: yesRevista Científica, 2010
Se realizaron análisis macro y microscópicos de los ciegos pilóricos en las especies Mylossoma acanthogaster, M. duriventre, M. aureum, Pygocentrus cariba y Cynopotamus venezuelae, procedentes de los ríos Catatumbo, Orinoco, Apure y Cunaviche en ...
Zulamita Medina Perozo   +4 more
doaj  

Vulnerability of marine megafauna to global at‐sea anthropogenic threats

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle   +309 more
wiley   +1 more source

Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes [PDF]

open access: yes, 2011
In this contribution we jointly optimize the number of multiple-input multiple-output (MIMO) layers and the number of bits per symbol within an iteratively-detected multiuser MIMO downlink (DL) transmission scheme under the constraint of a given fixed ...
Ahrens, Andreas, Benavente Peces, César
core   +1 more source

On the Energy Efficiency in the Next Generation of Smart Buildings—Supporting Technologies and Techniques

open access: yesEnergies, 2019
Energy efficiency is one of the most relevant issues that the scientific community, and society in general, must face in the next years. Furthermore, higher energy efficiencies will contribute to worldwide sustainability. Buildings are responsible for 40%
César Benavente-Peces
doaj   +1 more source

Performance Analysis of SVD-assisted Downlink Multiuser MIMO Systems

open access: yes, 2010
Multiuser multiple-input multiple-output (MIMO) downlink (DL) transmission schemes experience both multiuser interference as well as inter-antenna interference.
Ahrens, Andreas   +2 more
core  

Sobre el deseo y sus paradojas: una aproximación a Franz Kafka

open access: yesClínica y Salud. Investigación Empírica en Psicología, 2000
Algunos escritos de Franz Kafka, cartas y diarios, tomados a manera de material clínico, sirven como pretexto para investigar acerca de las dificultades que siempre acompañan al sujeto en el acceso a su propio deseo.
C. PECES
doaj  

Mapping area of habitat for inland wetland species

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Area of habitat (AOH) maps provide a high‐resolution representation of the habitat available in a species’ range and can support conservation policy and planning processes. However, until recently, there was insufficient knowledge on the distribution of inland wetlands and freshwater biodiversity to develop AOH mapping methods specifically ...
Francesca A. Ridley   +17 more
wiley   +1 more source

Modulation-mode and power-assignment for SVD-assisted downlink multiuser MIMO systems

open access: yes, 2010
Multiuser multiple-input multiple-output (MIMO) downlink (DL) transmission schemes experience both multiuser interference as well as inter-antenna interference.
Ahrens, Andreas, Benavente Peces, César
core  

A method for estimating the rate of shedding of tags from yellowfin tuna [PDF]

open access: yes, 1965
ENGLISH: The present paper describes a new method for estimating the shedding rate of tags. The method utilizes not only data on tagging and recovery of fish marked with two tags but also data from those marked with one.
Bennett, Edward B.   +2 more
core  

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