Results 131 to 140 of about 815,811 (353)
The Quantum Arnold Transformation and the Ermakov-Pinney equation
, 2013 The previously introduced Quantum Arnold Transformation, a unitary operator mapping the solutions of the Schr\"odinger equation for time dependent quadratic Hamiltonians into the solutions for the free particle, is revised and some interesting extensions
Guerrero, Julio +1 more
core +1 more source
Hechtia mixtecana sp. nov. (Hechtioideae; Bromeliaceae), from Oaxaca, Mexico
Nordic Journal of Botany, EarlyView.Botanical explorations carried out in the state of Oaxaca, Mexico, led to the discovery of a new Bromeliaceae: Hechtia mixtecana,which is here described and illustrated. The new taxon is compared with the morphologically similar Hechtia fragilis, Hechtia lyman‐smithii, and Hechtia minuta.
Rodrigo Alejandro Hernández‐ Cárdenas +4 more
wiley +1 more source
Oikos, EarlyView.Functional diversity (FD) is an essential community property connecting biodiversity, ecosystem functioning, and conservation objectives. In agricultural landscapes, avian communities, which play key functional roles, are facing large‐scale biodiversity erosion, largely due to land‐use changes.
Pietro Tirozzi +3 more
wiley +1 more source
Democracia, ciudadanía y violencia en Guerrero después de Ayotzinapa (2014-2024)
EntretextosLa presente investigación describe y explica la impunidad estructural de la desaparición de los 43 estudiantes de la Escuela Normal Raúl Isidro Burgos, ocurrida las noches del 25 y 26 de septiembre del 2014, en la configuración contemporánea de la ...
Kenya Hernández Vinalay +1 more
doaj +1 more source
Early-Stage Globalization and Corporate Debt Maturity: The Case of South Korea, 1980-94 [PDF]
Using data from publicly traded South Korean corporations for the period 1980-94, this paper finds evidence that increases in financial liberalization that accompanied the more general process of financial globalization have significantly reduced the ...
Federico Guerrero
core
Supervivencia de Rhizophora mangle L. en el manglar de Barra de Tecoanapa, Guerrero, México
, 2016 Resumen es: En el manglar de Barra de Tecoanapa, Guerrero, se estudio la fenologia reproductiva, establecimiento de los propagulos y supervivencia de las plantas ha...
C. T. Hernández, D. Belmonte
semanticscholar +1 more source
People and Nature, EarlyView.Abstract Farming systems of high natural and cultural value represent approximately 30% of farmlands in the European Union and are associated with a high species and habitat diversity and/or the presence of species of European conservation concern. This study aims to synthesize the existing knowledge on the assessment of biodiversity and ecosystem ...
Elsa Varela +4 more
wiley +1 more source
EntretextosEl objetivo principal del presente trabajo es describir y explicar, la relación teórica y analítica, entre tres conceptos; Ciudadanía, etnicidad y reconocimiento, con el propósito de configurar una teoría fuerte de ciudadanía étnica, categoría que ...
Zenaido Ortiz Añorve +1 more
doaj +1 more source
Effects of land use on soil C02 flux in the Paramo de Guerrero, Colombia
, 2016 The Andean paramo is an important global carbon sink and has a fundamental ecological function of capture, regulation and supply of water resources. The soil CO2 efflux is a natural process through which the carbon is released into the atmosphere by ...
D. C. Peña-Quemba +2 more
semanticscholar +1 more source
People and Nature, EarlyView.Abstract Protected areas represent complex social‐ecological systems that require governance and management approaches that valorise and enhance positive relationships between people and nature. This study analyses the alignment between social and ecological systems to detect the social‐ecological fit of projects focused on biodiversity conservation ...
Elena Andriollo +4 more
wiley +1 more source