22 research outputs found
The Influence of Gender and Self-Efficacy on Healthy Eating in a Low-Income Urban Population Affected by Structural Changes to the Food Environment
Although US obesity prevention efforts have begun to implement a
variety of system and environmental change strategies to address
the underlying socioecological barriers to healthy eating, factors
which can impede or facilitate community acceptance of such
interventions are often poorly understood. This is due, in part,
to the paucity of subpopulation health data that are available to
help guide local planning and decision-making. We contribute to
this gap in practice by examining area-specific health data for a
population targeted by federally funded nutrition interventions in
Los Angeles County. Using data from a local health assessment that
collected information on sociodemographics, self-reported health
behaviors, and objectively measured height, weight, and blood
pressure for a subset of low-income adults (n
= 720), we compared health risks and predictors of healthy eating
across at-risk groups using multivariable modeling analyses. Our
main findings indicate being a woman and having high self-efficacy
in reading Nutrition Facts labels were strong predictors of
healthy eating (P<0.05). These findings
suggest that intervening with women may help increase the reach of
these nutrition interventions, and that improving self-efficacy in
healthy eating through public education and/or by other means can
help prime at-risk groups to accept and take advantage of these
food environment changes
Opal-like photonic structuring of perovskite solar cells using a genetic algorithm approach
Light management is an important area of photovoltaic research, but little is known about
it in perovskite solar cells. The present work numerically studies the positive effect of structuring
the photo-active layer of perovskite material. This structuration consists of a hybrid absorbing layer made of an uniform part and an opal-like part. A genetic algorithm approach allows us to determine the optimal combination among more than 1.4 10 potential combinations. The optimal combination provides an internal quantum efficiency of 98.1%, nearly 2% higher than for an equivalent unstructured photo-active layer. The robustness of the optimum against potential
experimental deviations, as well as the angular dependency of the proposed structure, are examined in the present study.ELSSOL; ARC - Actions de Recherche Concerté
Photonic management using opal-like crystals in perovskite solar cells
Perovskite solar cells recently showed a tremendous interest among the photovoltaic community. However, little is known on the effect of light management inside PV architectures. We compare structured and unstructured absorbing layers in order to enhance the integrated quantum efficiency. The photo-active layer is made of monolayer, bilayer or trilayer of perovskite spheres inside a TiO2 matrix. The excitation of guided resonances via Fano resonances inside the absorbing spheres enhances the integrated quantum efficiency and enables a photonic gain as high as 6.4%. Influence of sphere's radius, incident angle and incident polarization on the absorbing properties are also reported
Efficiency enhancement of perovskite solar cells based on opal-like photonic crystals
peer reviewedELSSOL; ARC - Actions de Recherche Concerté
Knowledge, attitudes and potential response to menu labelling in an urban public health clinic population
Benefits of photonic structuring on perovskite solar cells using opal-like layers
ELSSO
When citizens and scientists work together: a French collaborative science network on earthworms communities distribution
International audienc
Burden of Bites by Dogs and Other Animals in Los Angeles County, California, 2009-2011
ObjectivesThe objective of this study was to analyze all animal-to-human bite reports during a 3-year period from a regional surveillance database. Results helped to inform local efforts to reduce and prevent animal-to-human bites.MethodsWe reviewed all cases of animal-to-human bites occurring from 2009 through 2011 that were reported to the Los Angeles County Department of Public Health's Animal Bites Database. We collected data on the bite victim's date of birth, age, and address; bite circumstances (ie, date, time, location, how bite occurred); anatomic site and treatment of bite; type of reporting facility; and breed and management of biting animal.ResultsFrom 2009 through 2011, 26   169 animal-to-human bites were reported, of which 23   103 (88%) were dog bites. Most animal-to-human bites (n = 7673, 29%) occurred between 4 pm and 8 pm and peaked during the month of July (n = 2663, 10%). Most animal-to-human bites occurred outdoors (n = 8772, 34%) and while victims engaged in recreational activities (n = 4353, 17%). The hands were the most common injury site (n = 9130, 35%), and only 1% of animal bites (n = 267) resulted in hospitalization. A total of 4115 bite victims (16%) received tetanus vaccinations. Of all animal-to-human bite cases, medical organizations reported 13   451 (51%), and animal control agencies reported 10   682 (41%).ConclusionsAnimal-to-human bites can often lead to medical complications. Surveillance is essential in helping to identify, manage, and reduce these highly preventable injuries and direct public health actions and policies on animal bite risk and prevention
When citizens and scientists work together: a French collaborative science network on earthworms communities distribution
International audienc
When citizens and scientists work together: a French collaborative science network on earthworms communities distribution
International audienc