Results 101 to 110 of about 127,712 (345)

Ion Chemistry in Dielectric Barrier Discharge Ionization: Recent Advances in Direct Gas Phase Analyses

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Dielectric barrier discharge ionization (DBDI) sources, employing low‐temperature plasma, have emerged as sensitive and efficient ionization tools with various atmospheric pressure ionization processes. In this review, we summarize a historical overview of the development of DBDI, highlighting key principles of gas‐phase ion chemistry and the ...
Kseniya Dryahina   +4 more
wiley   +1 more source

Assessing the comparative risk of plant protection products to honey bees, non-target arthropods and non-Apis bees

open access: yesJulius-Kühn-Archiv, 2012
Background: In the European Union the placing of pesticides on the market requires as a prerequisite that a risk assessment demonstrates low risks to human health and the environment, among which includes pollinators.
Miles, Mark J., Alix, Anne
doaj   +1 more source

Environmental assessment for the Satellite Power System (SPS): Studies of honey bees exposed to 2.45 GHz continuous wave electromagnetic energy [PDF]

open access: yes, 1980
Post treatment brood development was normal and teratological effects were not detected at exposures of 3 to 50 mw sq cm for 30 minutes. Post treatment survival, longevity, orientation, navigation, and memory of adult bees were also normal after ...
Gary, N. E., Westerdahl, B. B.
core   +2 more sources

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo   +5 more
wiley   +1 more source

Bees and Honey-Dew [PDF]

open access: yesNature, 1891
NEAR here is an avenue of alternate beech and oak trees, and, in walking through it, my attention has lately been drawn to a loud humming in the beeches, similar to that heard in lime trees when in flower, while the oaks are silent. The sound is, I find, produced from bees in search of the Aphis secretions on the leaves of the beeches, the under sides ...
openaire   +2 more sources

Using honey in wound care [PDF]

open access: yes, 2006
Honey is primarily a herbal product with some modifications that are made by the bees that process the nectar or sap collected from the plants to store as honey. The types of phytochemicals present in a honey depend on the plant source of the honey.
Molan, Peter C.
core   +2 more sources

Honey bee foraging distance depends on month and forage type [PDF]

open access: yes, 2015
To investigate the distances at which honey bee foragers collect nectar and pollen, we analysed 5,484 decoded waggle dances made to natural forage sites to determine monthly foraging distance for each forage type.
A Kacelnik   +55 more
core   +2 more sources

Direct Ambient Mass Spectrometry for Food, Beverage, and Agricultural Sample Analysis and Research

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Ambient and direct mass spectrometry (MS) methods are becoming increasingly used for the rapid analysis of food, beverage and agricultural samples. Novel ionization approaches combined with targeted, or untargeted workflows provide analytical outcomes within a greatly reduced time period compared to traditional separation science coupled with ...
Leigh M. Schmidtke   +3 more
wiley   +1 more source

Risk and Toxicity Assessment of a Potential Natural Insecticide, Methyl Benzoate, in Honey Bees (Apis mellifera L.)

open access: yesInsects, 2019
Methyl benzoate (MB) is a component of bee semiochemicals. Recent discovery of insecticidal activity of MB against insect pests provides a potential alternative to chemical insecticides.
Yu-Cheng Zhu   +4 more
doaj   +1 more source

Getting more than a fair share: nutrition of worker larvae related to social parasitism in the Cape honey bee Apis mellifera capensis [PDF]

open access: yes, 2002
Besides activation of ovaries and thelytokous reproduction of Cape workers, larval nutrition is an important aspect in parasitism of the African honey bee.
Allsopp, M.H.   +3 more
core   +2 more sources

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