Results 41 to 50 of about 16,616 (276)
Influence of Pollination Technique on Greenhouse Tomato Production
Journal of Agricultural and Marine Sciences, 2003 An experiment was carried out to study the effects of four pollination techniques; Bumblebees (Bombus terrerstris L.), plant growth bioregulator (PGB) (Parachlorophenoxy acetic acid), hand vibration, and control (natural pollination) on tomato ...
I.K. Nazer, M.A. Kasrawi, Y.Z. Al-Attal
doaj +1 more source
Bumblebee field as a source of cosmological anisotropies [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 In this work, a bumblebee field is adopted in order to generate cosmological anisotropies. For that purpose, we assume a Bianchi I cosmology, as the background geometry, and a bumblebee field coupled to it.
R. V. Maluf, J. Neves
semanticscholar +1 more source
bioRxiv, 2022 Exposure to pesticides is a major threat to bumblebee (Bombus spp.) health. In temperate regions, queens of many bumblebee species hibernate underground for several months, putting them at potentially high risk of exposure to soil contaminants.
Sabrina Rondeau +3 more
semanticscholar +1 more source
Radiative corrections in bumblebee electrodynamics
Physics Letters B, 2015 We investigate some quantum features of the bumblebee electrodynamics in flat spacetimes. The bumblebee field is a vector field that leads to a spontaneous Lorentz symmetry breaking.
R.V. Maluf, J.E.G. Silva, C.A.S. Almeida
doaj +1 more source
Warm Temperatures Reduce Flower Attractiveness and Bumblebee Foraging
Insects, 2021 Simple Summary In the context of climate warming, modifications in plant pollination and reproductive success constitute a crucial issue. Modifications of both floral signals (display, size of flowers) and rewards (nectar and pollen) due to increased air
Charlotte Descamps +3 more
semanticscholar +1 more source
Level of Genetic Diversity in European Bumblebees is Not Determined by Local Species Abundance
Frontiers in Genetics, 2019 Bumblebee species with declining population trends tend to show lower genetic diversity levels than stable species. The observed difference might be explained by abundance differences, with declining bumblebee species having lower genetic diversity ...
Kevin Maebe +4 more
doaj +1 more source
Bumblebee gravity with a Kerr–Sen like solution and its Shadow [PDF]
The European Physical Journal C, 2020 We have considered the bumblebee gravity model where lorentz-violating (LV) scenario gets involved through a bumblebee field vector field Bμ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb}
S. K. Jha, A. Rahaman
semanticscholar +1 more source
Monitoring bee health in European agro-ecosystems using wing morphology and fat bodies [PDF]
One Ecosystem, 2021 Current global change substantially threatens pollinators, which directly impacts the pollination services underpinning the stability, structure and functioning of ecosystems.
Maryse Vanderplanck +41 more
doaj +3 more sources
Greybody radiation and quasinormal modes of Kerr-like black hole in Bumblebee gravity model
The European Physical Journal C, 2021 In the framework of the Lorentz symmetry breaking (LSB), we investigate the quasinormal modes (QNMs) and the greybody factors (GFs) of the Kerr-like black hole spacetime obtained from the bumblebee gravity model.
Sara Kanzi, I. Sakalli
semanticscholar +1 more source
Einstein–Bumblebee-dilaton black hole solution
European Physical Journal C: Particles and Fields, 2023 We obtain new black hole solutions in a Einstein–Bumblebee-scalar theory. By starting with a Einstein–Bumblebee theory in ( $$D+d$$ D + d ) dimensions, the scalar dilaton field and its interaction with the gravitational and Bumblebee fields are obtained ...
L. A. Lessa, J. E. G. Silva
doaj +1 more source