Results 1 to 10 of about 83,600 (300)

A 15-year survey of pollen aeroallergens in North Texas [PDF]

open access: yesJournal of Allergy and Clinical Immunology: Global
Background: Knowledge of airborne pollen seasons is essential for physicians to accurately diagnose and treat patients with allergic respiratory diseases.
Howard C. Crisp, MD   +1 more
doaj   +2 more sources

Enhanced Honey Bee Colony Strength and Economic Returns from Fall and Winter Feeding with a Complete Pollen-Replacing Feed [PDF]

open access: yesInsects
Poor nutrition is a known contributing factor to ongoing high rates of honey bee colony mortality. Beekeepers invest significant resources to provide supplemental feeds to their colonies, but currently available diets are nutritionally incomplete.
Kelly Kulhanek   +4 more
doaj   +2 more sources

Comparative characteristics of pollen fall of alergenic plants in WIelkapolska Region (Poland) and in Lviv city (Ukraine)

open access: yesБіологічні студії, 2007
Airborne ragweed (Ambrosia) and pigweed (Chenopodiaceae) pollen concent-ration in central part of Poland (Warta Landscape Park) and western part of Ukraine (Lviv city) was studied.
N. Kalinovych   +5 more
doaj   +3 more sources

Characterizing the symptomatology and pathophysiology of allergic rhinitis using a nasal allergen challenge model – a subset of the allergic rhinitis microbiome study [PDF]

open access: yesAllergy, Asthma & Clinical Immunology
Background Since 2015, our nasal allergen challenge (NAC) protocol has been used to investigate the pathophysiology of allergic rhinitis (AR) with various allergens.
Sophia Linton   +7 more
doaj   +2 more sources

Results of research on pollen fall-out in the atmospheric ground layer

open access: yesActa Societatis Botanicorum Poloniae, 2015
The paper covers results of observations on the distribution of tree and herbaseous plants' pollen in the lower atmospheric layer at various heights in the three-year period 1966-1968. On the basis of the material obtained a calendar of pollen appearance
Stefania Tyczyńska
doaj   +3 more sources

Association between serum alder‐specific immunoglobulin E positivity and seasonal onset of eosinophilic esophagitis [PDF]

open access: yesJGH Open
Background and Aim Pollen exposure may induce seasonal onset of eosinophilic esophagitis. However, whether serum pollen‐specific immunoglobulin E positivity can predict such seasonal eosinophilic esophagitis onset remains unclear.
Akihiro Watanabe   +9 more
doaj   +2 more sources

Modern pollen rain analysis from Itapuã State Park (Parque Estadual Itapuã), RS, Brazil [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2021
Itapuã State Park is located in the municipality of Viamão, between the 30º 20 ‘and 30º 27’ S and between 50º 50’ and 51º 05’ W, in the state of Rio Grande do Sul, southern Brazil.
BIANCA T. GOMES   +3 more
doaj   +1 more source

The Importance of Time and Place: Nutrient Composition and Utilization of Seasonal Pollens by European Honey Bees (Apis mellifera L.)

open access: yesInsects, 2021
Honey bee colonies have a yearly cycle that is supported nutritionally by the seasonal progression of flowering plants. In the spring, colonies grow by rearing brood, but in the fall, brood rearing declines in preparation for overwintering.
Gloria DeGrandi-Hoffman   +9 more
doaj   +1 more source

Changes in Vitellogenin (Vg) and Stress Protein (HSP 70) in Honey Bee (Apis mellifera anatoliaca) Groups under Different Diets Linked with Physico-Chemical, Antioxidant and Fatty and Amino Acid Profiles

open access: yesInsects, 2022
Honey bee colonies are often subjected to diseases, nutrition quality, temperature and other stresses depending on environmental and climatic conditions. As a result of malnutrition, the level of Vg protein decreases, leading to overwintering losses. The
Aybike Sarioğlu-Bozkurt   +7 more
doaj   +1 more source

Effects of climate change and pollen supplementation on the reproductive success of two grassland plant species

open access: yesEcology and Evolution, 2022
Climate change has the potential to alter plant reproductive success directly and indirectly through disruptions in animal pollination. Climate models project altered seasonal precipitation patterns, and thus, the effects of climate change on available ...
Martin Andrzejak   +3 more
doaj   +1 more source

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