4,290 research outputs found
The health status of Irish honeybee colonies in 2006
peer-reviewedThis study assessed the health status of Irish honeybee colonies and provides a snapshot of the incidence of a number of important colony parasites/pathogens including: the mite Varroa destructor; three associated viruses (deformed wing virus (DWV), acute bee paralysis virus (ABPV) and Kashmir virus (KBV)); the tracheal mite Acarapis woodi; the microsporidian Nosema spp., and the insect Braula coeca. During June/July 2006, 135 samples of adult bees were collected from productive colonies throughout Ireland and standard techniques were used to determine the presence and absence of the parasites and pathogens. Varroa destructor was positively identified in 72.6% of the samples and was widely distributed. Although the samples were analysed for three viruses, DWV, ABPV and KBV, only DWV was detected (frequency = 12.5%). Acarapis woodi and Nosema spp. occurred in approximately 11% and 22% of the samples, respectively, while B. coeca, a wingless dipteran that was once common in Irish honeybee colonies, was very rare (3.7%). Samples where all the pathogens/parasites were jointly
absent were statistically under-represented in Leinster and DWV was statistically
over-represented in Munster. In Ulster, there was over-representation of the categories where all parasites/pathogens were jointly absent and for A. woodi, and underrepresentation of V. destructor.The project was funded by EU FEOGA
and the National Apiculture Programme 2007â2010
of the Department of Agriculture, Food and the
Marine
Effects of Volcanic Emissions on Clouds During Kilauea Degassing Events
Aerosols influence Earths radiative balance directly by scattering and absorbing solar radiation, and indirectly by modifying cloud properties. Current scientific consensus indicates that these effects may offset as much as 50% of the warming due to greenhouse gas emissions. Over the last two decades dramatic volcanic events in Hawaii have produced localized aerosol emissions in otherwise clean environments. These are natural experiments" where the aerosol effects on clouds and climate can be partitioned from other effects like meteorology and industrial emissions. Therefore, these events provide a unique opportunity to learn about possible effects of aerosol pollution on climate through cloud modification. In this work we use the version 5 of the NASA Goddard Earth Observing System (GEOS-5) and satellite retrievals to analyze and evaluate the strength of the aerosol indirect effect on liquid and ice clouds during the 2008 and 2018 Kilauea degassing events using different emissions scenarios (0, 1, and 5 actual emissions). Our results suggested that the 2018 event was stronger and more regionally significant with respect to cloud formation process for both liquid and ice clouds, while the 2008 affected local liquid clouds only. GEOS-5 predictions reproduced spatial patterns for all parameters, however better precision could be gained by using more accurate plume parameters for height and ash concentration
Mapping inshore fishing activity using aerial, land, and vessel-based sighting information
Information on the distribution and intensity of inshore fishing activity is needed to inform marine spatial planning and to assess fisheries interactions with the environment and other industries. Although fishing vessels under 15 m (overall length) account for 98.4% (2011 value) by the number of the European fleet, information on inshore fishing activity in Europe is very limited as there is no statutory satellite monitoring of smaller vessels (<15 m length before 2012, <12 m thereafter). Here, we develop, present, and apply a method which uses sightings-per-unit-effort (SPUE) estimates calculated from fisheries enforcement data to describe the distribution and intensity of inshore fishing activity off the coasts of England and Wales. For the larger inshore vessels, the SPUE estimates of activity were validated with vessel monitoring system (VMS) data and showed good agreement at the scale of analysis. Fishing activity estimates from SPUE are presented with an assessment of uncertainty, to account for spatial differences in enforcement activity. Our estimates of the distribution and intensity of inshore fishing activity and will complement estimates of offshore fishing activity based on VMS
How religious and spiritual beliefs explain prolonged grief disorder symptoms
This study investigated the importance of religious and spiritual beliefs in daily life in explaining prolonged grief disorder (PGD) symptomatology. Participants were 588 bereaved adults who completed a questionnaire. The importance of spiritual beliefs in daily life explained a small to medium, significant 3% of variance in PGD symptoms, but religious beliefs in daily life did not. Individuals who placed moderate importance on spiritual beliefs in their daily life may experience more intense grief
Developing a Web-based Learning Experience for Nutrition among Future Health and Sports Science Professionals
Nutrition education theories support the use of videos to help individuals take steps towards changing their behavior. The purpose of NOURISH (Nutrition Outreach to Undergrads in Sports Science and Health Professions) is to develop a multimedia, theory-based nutrition website for students preparing for careers in medicine and sports science. Research has shown that nutrition knowledge and resources are often limited for students pursuing careers in sports medicine or medicine. NOURISH was a collaboration with Kean Universityâs graphic design team to develop interactive review questions and a brief video to help students learn about pre-exercise hydration guidelines using the multimedia learning theory and the social cognitive theory.
A short questionnaire was sent to faculty members to provide a formative evaluation of the usefulness of the video and website content. Faculty members (n=5) reported that the video would be helpful in facilitating student understanding of pre-exercise hydration guidelines, that the knowledge questions were very helpful in reviewing content and that the logo and colors would be helpful in capturing viewer attention. Based on this feedback, additional edits were made to improve video clarity, as well as to update the logo and colors for future pilot testing. Developing theory-based, multi-media nutrition education tools may be an effective strategy for providing university faculty with resources that are perceived as likely to capture the attention of students and improve retention of nutrition content
Throttling for the game of Cops and Robbers on graphs
We consider the cop-throttling number of a graph for the game of Cops and
Robbers, which is defined to be the minimum of , where
is the number of cops and is the minimum number of
rounds needed for cops to capture the robber on over all possible
games. We provide some tools for bounding the cop-throttling number, including
showing that the positive semidefinite (PSD) throttling number, a variant of
zero forcing throttling, is an upper bound for the cop-throttling number. We
also characterize graphs having low cop-throttling number and investigate how
large the cop-throttling number can be for a given graph. We consider trees,
unicyclic graphs, incidence graphs of finite projective planes (a Meyniel
extremal family of graphs), a family of cop-win graphs with maximum capture
time, grids, and hypercubes. All the upper bounds on the cop-throttling number
we obtain for families of graphs are .Comment: 22 pages, 4 figure
Changes In Jump Performance And Dynamic Balance At High Terrestrial Altitude
The purpose of this study was to examine the effects of altitude on dynamic balance and jump performance of a controlled landing during a 12-day high altitude trek. Following a two-legged jump, time to stabilization (5% of body mass for 0.5 s), maximum power, and jump height were measured in 11 participants using a portable force platform at sea level (BL), 3619 m (C1), and 5140 m (C3). Jump performance significantly decreased at C1 and C3 compared to BL (P=0.001). There were no significant differences found in time to stabilization and maximum power with increasing altitude. The present findings indicate that jump performance is significantly decreased with increasing altitude. However, dynamic balance and jump power remain unaffected
Electronâdeficient pâbenzoylâlâphenylalanine derivatives increase covalent chemical capture yields for proteinâprotein interactions
The photoactivatable amino acid pâbenzoylâlâphenylalanine (pBpa) has been used for the covalent capture of proteinâprotein interactions (PPIs) in vitro and in living cells. However, this technique often suffers from poor photocrosslinking yields due to the low reactivity of the active species. Here we demonstrate that the incorporation of halogenated pBpa analogs into proteins leads to increased crosslinking yields for proteinâprotein interactions. The analogs can be incorporated into live yeast and upon irradiation capture endogenous PPIs. Halogenated pBpas will extend the scope of PPIs that can be captured and expand the toolbox for mapping PPIs in their native environment.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149350/1/pro3621.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149350/2/pro3621_am.pd
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A Comparative Analysis of Mercury and Lead in Sindoor from the U.S. and Bangladesh
Heavy metals have historically been popular for use in cosmetics manufacturing due to the colorful pigmentation of heavy metal compounds. In the case of sindoor, a cosmetic used by married Hindu women for religious purposes, mercury sulfide, lead tetroxide, and lead chromate are compounds suspected to still be involved in its manufacturing due their red and orange coloration. In the United States, federal regulations have established a criteria of allowable lead in cosmetics at 10 parts per million (ppm) and 65 ppm in mercury. In Bangladesh, such regulations have not been implemented. Consequently, it was anticipated that both mercury and lead content would be higher in Bangladesh sourced sindoor than in U.S. sourced sindoor. The metal content in sindoor samples was determined through quantitative analysis using inductively coupled plasma optical emission spectroscopy (ICP-OES). While it was determined that there was no statistical difference in average lead content between U.S. and Bangladesh samples, 35% of Bangladesh samples contained more than 10 ppm of lead, as opposed to 14% of U.S. samples. Because there was no detectable mercury in any of the samples, it is possible that external factors such as cost and accessibility have incentivized use of lead containing compounds in sindoor manufacturing over mercury containing compounds. These findings indicate that sindoor may potentially be a route of lead exposure for Hindu women in Bangladesh, and further investigation into the manufacturing of sindoor and the people it affects is needed.Key Words: heavy metals, lead, mercury, sindoor, cosmetics, Banglades
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