Results 61 to 70 of about 293,429 (371)

Food for Pollinators: Quantifying the Nectar and Pollen Resources of Urban Flower Meadows

open access: yesPLoS ONE, 2016
Planted meadows are increasingly used to improve the biodiversity and aesthetic amenity value of urban areas. Although many ‘pollinator-friendly’ seed mixes are available, the floral resources these provide to flower-visiting insects, and how these ...
D. Hicks   +16 more
semanticscholar   +1 more source

Land-Use and Height of Pollen Sampling Affect Pollen Exposure in Munich, Germany

open access: yesAtmosphere, 2020
Airborne pollen concentrations vary depending on the location of the pollen trap with respect to the pollen sources. Two Hirst-type pollen traps were analyzed within the city of Munich (Germany): one trap was located 2 m above ground level (AGL) and the ...
Jesús Rojo   +8 more
doaj   +1 more source

Impact of Local Grasslands on Wild Grass Pollen Emission in Bavaria, Germany

open access: yesLand, 2022
Meteorological conditions and the distribution of pollen sources are the two most decisive factors influencing the concentration of airborne grass pollen.
Stephan Jung   +10 more
doaj   +1 more source

Geoarchaeological characterisation of a Younger Dryas site in the Alpine uplands: Cornafessa rock shelter (Italy)

open access: yesGeoarchaeology, Volume 38, Issue 1, Page 35-56, January/February 2023., 2023
Abstract The effects of the Younger Dryas (YD) fluctuation on Late Pleistocene hunter‐gatherers' settlement and subsistence systems in the southern Alps are poorly known. This is primarily due to the scarcity of archaeological sites dating from the YD, in contrast with the extensive evidence available from the lateglacial interstadial and the early ...
Diego E. Angelucci   +2 more
wiley   +1 more source

RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis

open access: yesScience, 2017
Timing a switch in tissue integrity In plants, sperm cells travel through the pollen tube as it grows toward the ovule. Successful fertilization depends on the pollen tube rupturing to release the sperm cells (see the Perspective by Stegmann and Zipfel).
M. Mecchia   +10 more
semanticscholar   +1 more source

Beyond 3D: Smart Material Systems for Microscale 4D Printing

open access: yesAdvanced Materials Technologies, EarlyView.
Smart materials exhibit shape changes in response to their environment, enabling scientists to go beyond 3D in the rapidly growing field of 4D printing. This review covers recent advances, current challenges, and emerging trends in 4D printing on the microscale.
Daniel Maher   +3 more
wiley   +1 more source

Charting the landscape of the environmental exposome

open access: yesiMeta, Volume 1, Issue 4, December 2022., 2022
We describe the biological and chemical components of the environmental exposomes in three major environmental matrices that are highly relevant to human and social‐economical health—air, soil, and water. We discuss how different exposome components can interact with each other. Finally, we propose a list of outstanding challenges to be tackled to push
Xin Wei   +6 more
wiley   +1 more source

Chemistry of floral rewards: intra- and interspecific variability of nectar and pollen secondary metabolites across taxa

open access: yesEcological Monographs, 2018
Floral chemistry mediates plant interactions with pollinators, pathogens, and herbivores, with major consequences for fitness of both plants and flower visitors.
E. Palmer-Young   +7 more
semanticscholar   +1 more source

Getting to the heart of cardiovascular evolution in humans

open access: yeseLife, 2019
Differences in the response of cardiomyocytes to oxygen deprivation in humans and chimpanzees may explain why humans are more prone to certain heart diseases.
Alex Pollen, Bryan J Pavlovic
doaj   +1 more source

Pollen grading prediction scale for patients with Artemisia pollen allergy in China: A 3‐day moving predictive model

open access: yesClinical and Translational Allergy, 2023
Background Artemisia pollen is the most prevalent outdoor aeroallergen causing respiratory allergies in Beijing, China. Pollen allergen concentrations have a direct impact on the quality of life of those suffering from allergies.
Zhaoyin Yin   +3 more
doaj   +1 more source

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