نتایج جستجو برای: hony bee

تعداد نتایج: 13604  

2001
Tom Arbuckle Volker Steinhage Dieter Wittmann

Bees, as the main pollinators of food crops, represent a critical natural resource which needs to be carefully exploited and managed. In recent years, however, destruction of bee's native habitats, infestations, and displacements of native bees by alien bee species have reduced and disturbed bee populations and this is already having considerable impact on global agriculture. A further concurre...

2010

QSAR for honey bee acute contact toxicity (amide derivatives) 1.2.Other related models: QSAR for honey bee acute contact toxicity (amine derivatives) QSAR for honey bee acute contact toxicity (ester derivatives) QSAR for honey bee acute contact toxicity (ether derivatives not containing amide groups) 1.3.Software coding the model: QSARModel 3.5.0 Turu 2, Tartu, 51014, Estonia, http://www.molcod...

Alireza Jalaliezand Bijan Hatami Maryam Shahriar, Shaahin Eghbalsaied

Objectives: Royal jelly (RJ), a secretion of both the hypopharyngeal and mandibular glands of nurse workers, is believed to play a central role in honeybee queen development. Important component of royal jelly are proteins which form about 50% of the dry mass of RJ. Major royal jelly proteins (MRJPs) are the dominant proteinaceous component of royal jelly and constitute about 82-90% of total pr...

Journal: :European annals of allergy and clinical immunology 2015
C Nonotte-Varly

Bee product mugwort is identified as being at the origin of allergic accidents but the biological potency of Artemisia contained in bee pollen is not well known. In this experiment, Artemisia mass was identified in bee pollen mass and after having calculated the proportion of Artemisia using the bee pollen melissopalynology spectrum. Skin reactivity to Artemisia was assessed by measuring wheal ...

Journal: :archives of razi institute 2016
a. hedayat a. zare m. ahmadi a. zare

honey bee sting is used in some societies as a treatment of inflammation in joint diseases such as arthritis. to investigate the effect of honey bee venom in reducing inflammation, we selected 30 male wister rats which were divided in to 6 groups. except group 1, all remaining groups received 0.5 ml of complete freund’s adjuvant to induce arthritis. after 9 days, all animals that received adjuv...

2015
Olivia M. Bernauer Hannah R. Gaines-Day Shawn A. Steffan Brian T. Forschler

Bees provide vital pollination services to the majority of flowering plants in both natural and agricultural systems. Unfortunately, both native and managed bee populations are experiencing declines, threatening the persistence of these plants and crops. Agricultural chemicals are one possible culprit contributing to bee declines. Even fungicides, generally considered safe for bees, have been s...

Journal: :Bulletin of entomological research 2017
M Plascencia S M Philpott

In urban landscapes, gardens provide refuges for bee diversity, but conservation potential may depend on local and landscape features. Foraging and population persistence of bee species, as well as overall pollinator community structure, may be supported by the abundance, richness, and spatial distribution of floral resources. Floral resources strongly differ in urban gardens. Using hand nettin...

2016
Gihyun Lee Hyunsu Bae

Bee venom therapy has been used to treat immune-related diseases such as arthritis for a long time. Recently, it has revealed that group III secretory phospholipase A2 from bee venom (bee venom group III sPLA2) has in vitro and in vivo immunomodulatory effects. A growing number of reports have demonstrated the therapeutic effects of bee venom group III sPLA2. Notably, new experimental data have...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Ralph Grundel Robert P Jean Krystalynn J Frohnapple Gary A Glowacki Peter E Scott Noel B Pavlovic

Given bees' central effect on vegetation communities, it is important to understand how and why bee distributions vary across ecological gradients. We examined how plant community composition, plant diversity, nesting suitability, canopy cover, land use, and fire history affected bee distribution across an open-forest gradient in northwest Indiana, USA, a gradient similar to the historic Midwes...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Jeroen Scheper Menno Reemer Ruud van Kats Wim A Ozinga Giel T J van der Linden Joop H J Schaminée Henk Siepel David Kleijn

Evidence for declining populations of both wild and managed bees has raised concern about a potential global pollination crisis. Strategies to mitigate bee loss generally aim to enhance floral resources. However, we do not really know whether loss of preferred floral resources is the key driver of bee decline because accurate assessment of host plant preferences is difficult, particularly for s...

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