Results 61 to 70 of about 72,462 (294)

Groups with Preassigned Central and Central Quotient Group [PDF]

open access: yesTransactions of the American Mathematical Society, 1938
Every group G determines two important structural invariants, namely its central C(G) and its central quotient group Q(G) =G/C(G). Concerning these two invariants the following two problems seem to be most elementary. If A and B are two groups, to find necessary and sufficient conditions for the existence of a group G such that A and C(G), B and Q(G ...
openaire   +1 more source

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

open access: yesPeople and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson   +18 more
wiley   +1 more source

El pueblo andino y la dialéctica de Dios

open access: yesRevista Espiga, 2012
Este artículo versa sobre la sociedad andina, vertida en dos realidades teológicas: el dios de los Andes centrales y el dios de la cristiandad occidental junto al dios bíblico. Su fin es analizar las razones de su contexto.
Calixto Huanca Cárdenas
doaj   +1 more source

Legacy effects of European colonialism on hotspots of biocultural diversity threat

open access: yesPeople and Nature, EarlyView.
Abstract Patterns of biological diversity have been shaped by cultural practices in the past, while in turn, cultures and languages have evolved in close interaction with local species and ecosystems. However, in the Anthropocene, human activities are putting increasingly diverse pressures on ecosystems and cultures, resulting in accelerating threat ...
Bernd Lenzner   +4 more
wiley   +1 more source

Producción, intercambio y tributación del algodón desde las tierras cálidas hacia los Andes centrales neogranadinos, siglos XVI y XVII

open access: yesHISTOReLo: Revista de Historia Regional y Local, 2018
Durante el proceso de colonización de los Andes centrales neogranadinos las mantas de algodón que tejían los indígenas se convirtieron en objetos muy apreciados lo que afectó sus dinámicas de producción, trabajo y comercio, que incluían el cultivo ...
Claudia Marcela Vanegas Durán
doaj   +1 more source

Aesthetic values as relational values: Environmental aesthetics in go‐along interviews

open access: yesPeople and Nature, EarlyView.
Abstract Aesthetic values are often categorised as a type of relational values, yet their shared characteristics with other relational values remain largely unexplored. To address this gap, we turn to Emily Brady's theory of environmental aesthetics; her interpretation of aesthetic value exhibits important parallels with the concept of relational ...
Rafael Zinnenlauf   +3 more
wiley   +1 more source

Profundización del tope de permafrost y tendencias en la dinámica criogénica, a partir de 1989, en el glaciar de escombros compuesto del valle de Morenas Coloradas, Mendoza, Argentina.

open access: yesBoletín Geográfico, 2014
Los glaciares de escombros (rockglaciers) son las geoformas periglaciales con permafrost reptante más típicas e importantes, por su volumen en criosedimentos congelados y hielo, de los Andes Centrales.
Darío Trombotto Liaudat
doaj  

Potencial ficorremediador de algas altoandinas Mougeotia sp. y Spirogyra sp. (Charophyta)

open access: yesLilloa
En el siglo XVIII, durante el virreinato del Perú, la mina Cerro de Pasco inició la explotación de plata y plomo, actividad que persiste hasta la actualidad y que continúa contaminando con metales pesados el suelo y las aguas de la cuenca del río San ...
Enoc Jara Peña   +6 more
doaj   +1 more source

On central loops and the central square property

open access: yes, 2007
The representation sets of a central square C-loop are investigated. Isotopes of central square C-loops of exponent 4 are shown to be both C-loops and A-loops.
Adéníran, John Olúsọlá   +1 more
openaire   +3 more sources

Central and peripheral demyelination

open access: yesJournal of Neurosciences in Rural Practice, 2014
ABSTRACTSeveral conditions cause damage to the inherently normal myelin of central nervous system, perepheral nervous system or both central and perepheral nervous system and hence termed as central demyelinating diseases, perepheral demyelinating diseases and combined central and perepheral demyelinating diseases respectively.
Mehndiratta, Man Mohan   +1 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy