Results 41 to 50 of about 12,885 (179)
Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens
PLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1304-1321, July 2026.Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski +2 more
wiley +1 more source
Review of Policy Research, Volume 43, Issue 4, July 2026.ABSTRACT The accelerated digitalisation of society has amplified cybersecurity threats and revealed their cross‐sectoral nature. Yet, the policy instruments used to address these challenges remain insufficiently examined. This study conducts a scoping review of 980 academic articles (2007–2024) and applies Hood's NATO framework (Nodality, Authority ...
Benedetta Cotta, Maria Stella Righettini
wiley +1 more source
Hepatitis víricas en personal sanitario: evolución temporal [PDF]
, 2004 El presente trabajo pretende conocer la evolución temporal que han tenido las hepatitis víricas en el Personal Sanitario en los últimos años. Se estudió para ello el colectivo con enfermedad profesional (E.P.) del Hospital Clínico San Carlos,durante el ...
Rodriguez de la Pinta, María Luisa +5 more
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Paleoecología ecológica: Un eslabón perdido entre ecología y evolución
Collectanea Botanica, 2014 La paleoecología es más que una disciplina ambiental, ya que proporciona las evidencias empíricas necesarias para verificar hipótesis ecológicas y contribuye a una mejor comprensión de la interfase ecología-evolución.
V. Rull
doaj +1 more source
Estacionalidad turística en las provincias españolas: medición y análisis
Cuadernos de Turismo, 2015 En este trabajo se lleva a cabo un análisis de la concentración temporal de la demanda turística en las provincias españolas para el período 1999-2012.
Juan Antonio Duro +1 more
doaj +3 more sources
Evolución temporal de la beta bursátil en el IBEX-35 [PDF]
, 2018 [ES] El coeficiente Beta (ß) del CAPM es ampliamente utilizado en el mundo financiero para determinar la rentabilidad exigida a los activos por los inversores que siguen una estrategia de diversificación.Tiene su origen en la Teoría de Carteras de ...
Catalá Gras, Ana
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Ecology and Evolution, Volume 16, Issue 6, June 2026.Field photograph of an ancient Nothofagus tree covered with epiphytic lichens in the Patagonian temperate rainforest. This genus serves as a key model for investigating organellar introgression and evolutionary genomics in South America. ABSTRACT Hybridization is widespread across diverse groups of organisms, and in some cases, organellar genomes of ...
Gabriela Narváez +8 more
wiley +1 more source
Evolutionary Anthropology: Issues, News, and Reviews, Volume 35, Issue 2, June 2026.ABSTRACT The Acheulean represents the longest cultural period known to human history, lasting globally for more than 1.75 million years. It may have emerged as early as 1.95 Ma in Africa, spreading throughout much of the continent and then into Eurasia and lasting up to 350–200 ka in western Europe and South Asia, and even later in eastern Asia ...
Marie‐Helene Moncel +20 more
wiley +1 more source
Governing by Ambiguity: Sociotechnical Imaginaries of Platforms in China
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT Besides clear policy directives, the unresolved and open‐ended elements in policy communication also create discursive politics. This article argues that ambiguity in policy communication reflects the state's exercise of power within a fractured sociocultural landscape.
Fangyu Qing, Ngai Keung Chan
wiley +1 more source
Evolución temporal de concentración de ozono en la troposfera [PDF]
, 2016 Desarrolla un programa computacional para determinar la evolución temporal de las concentraciones de ozono y otros contaminantes en la troposfera, durante un día.
Concepción Gamarra, Lia Elis
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