Results 41 to 50 of about 3,072 (165)

Dimorphic enantiostyly and its function for pollination by carpenter bees in a pollen‐rewarding Caribbean bloodwort

open access: yesAmerican Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise Flowers that present their anthers and stigma in close proximity can achieve precise animal‐mediated pollen transfer, but risk self‐pollination. One evolutionary solution is reciprocal herkogamy. Reciprocity of anther and style positions among different plants (i.e., a genetic dimorphism) is common in distylous plants, but very rare in
Steven D. Johnson   +5 more
wiley   +1 more source

Contrasting effects of experimental warming in the initiation year and the flowering year on flower phenology of boreal understory species

open access: yesAmerican Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise High‐latitude plants initiate flower primordia at least 1 year before flowering. While impacts of rising temperatures on phenology in the flowering year are well studied, the effects of warmer temperatures in the initiation year (IY; the year before flowering) are virtually unknown.
Christa P. H. Mulder   +2 more
wiley   +1 more source

El rastro del SIDA en el Perú The trail of Aids in Peru

open access: yesHistória, Ciências, Saúde: Manguinhos, 2002
El presente trabajo es un estudio histórico sobre la epidemia del Sida en el Perú entre los años de 1983 y 2000. La investigación se centra en las respuestas legales, los estudios y las intervenciones médicas y en el contexto peruano de comienzos de la ...
Marcos Cueto
doaj   +1 more source

Estigma en epilepsia

open access: yesIatreia, 2009
El estigma ha acompañado a la epilepsia durante toda la historia, afecta a todas las razas y clases sociales y limita el desarrollo humano de los individuos afectados. El estigma tiene explicaciones antropológicas y psicológicas fuertes, que pueden ser intervenidas para que las personas con epilepsia logren una mejor calidad de vida. La Organización
openaire   +3 more sources

The effect of drought stress on the limits and costs of plasticity in floral longevity in response to pollinator decline

open access: yesAmerican Journal of Botany, Volume 113, Issue 2, February 2026.
Abstract Premise Declines in pollinator populations can reduce pollination services to plants, resulting in lower seed production. In response to these reductions, plants could increase the probability of pollinator visitation by plastically extending floral longevity.
Caelen McCabe, Christina M. Caruso
wiley   +1 more source

Stigmates / Estigmas

open access: yesLectora: Revista de Dones i Textualitat, 2001
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Cixous, Hélène   +1 more
openaire   +2 more sources

Enfermedad mental, estigma y legislación [PDF]

open access: yesRevista de la Asociación Española de Neuropsiquiatría, 2009
El estigma (marca o señal infamante) ligado a la etiqueta diagnóstica o a la estancia en instituciones psiquiátricas depara graves consecuencias para los sujetos, principalmente exclusión social y restricción o negación de la ciudadanía. Examinamos el carácter avanzado de la legislación vigente en España y sus potencialidades desestigmatizadoras e ...
openaire   +4 more sources

Fine‐tuning the buzz: comparing visitation frequency and pollination effectiveness in plant–pollinator networks

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2140-2152, February 2026.
Summary Ecological network approaches have advanced our understanding of how species interactions influence community and evolutionary dynamics. However, a key limitation is that most network analyses rely solely on visitation data, often overlooking functional aspects of interactions.
Lorena B. Valadão‐Mendes   +4 more
wiley   +1 more source

Floral stage optimization and immune evasion enhance Agrobacterium‐mediated genome editing in Arabidopsis

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2125-2139, February 2026.
Summary Agrobacterium‐mediated transformation by floral inoculation (AMT‐FI) enables genetic engineering without tissue culture. It is widely used in the model plant Arabidopsis thaliana, yet its efficiency and broader applicability remain limited. Here, we used a dual‐reporter system (RUBY and hygromycin resistance) to identify key floral stages and ...
Mao‐Sen Liu   +6 more
wiley   +1 more source

Preliminary study of the usefulness of a virtual reality programme against stigma in mental health

open access: yesINFAD, 2020
This study shows the results of the application of a new virtual reality program, designed to raise awareness of stigma towards people with mental health problems.
Adolfo J. Cangas, Blanca Galván
doaj   +1 more source

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