Introducing a Framework to Assess Agritourism’s Impact on Agricultural Literacy and Consumer Behavior towards Local Foods

Agritourism operators frequently incorporate educational opportunities about agricultural products and farming in their tourism experiences, but the educational potential of agritourism on visitors has not been measured. This potential impact of agritourism is important considering the environmental and economic sustainability of food systems depend on agriculturally literate citizens and policymakers. The purpose of this work is to develop a theoretical and methodological framework that will help determine the role of agritourism experiences in influencing agricultural literacy and local food purchasing behavior among consumers. To achieve this purpose, this work will account for the potential for agritourism experiences to impact both children and their parents, stimulating an intergenerational transfer of knowledge and subsequent increase in consumers’ purchasing of locally produced agricultural products

Serving Fruits and Vegetables in Kid-Friendly Shapes Increased Fruit and Vegetable Consumption in Preschool Children Aged 2-5 Years

Background. With childhood obesity rising, and taste preferences being influenced at an early age, it’s more important now than ever to encourage children to eat right. Objective. To find whether shaping fruits and vegetables (F&Vs) into kid-friendly designs would increase consumption in preschool aged children. Design. The four week long observational study took place at Loma Linda Children Academy in two stages during their normal lunch time hour. Baseline data was recorded during the first two weeks, and a month later intervention data was collected during the last two weeks. The menus served remained exactly the same except for the shapes of the F&Vs were cut into one of our eight kid-friendly designs during intervention weeks. Participants. A convenience sample of healthy preschool aged children (both male and female) between ages 2 and 5 were served hot lunch from the food service provider of the school, serving approximately 30 students per day, Monday through Thursday. Children with allergies were excluded from the study. Main outcome measures. Daily measurements were pooled by age group (2-3, 3-4, 4-5) and gender, which generated approximately 6 data points daily to be used for statistical comparisons. This translates into a sample size of 46 during baseline weeks and 45 for intervention weeks, for a total of 91 data points. Data was analyzed looking at F&V consumed/total F&V served and reported as a percentage. Statistical analysis performed. Results were calculated using an independent T-test and 3-way ANOVA comparison between variables. Results. Overall, displaying F&Vs into kid-friendly shapes increased the preschoolers’ intake regardless of age and gender by 10.8% when compared to unshaped F&Vs (p =.02). Conclusion. The results of this study may be helpful to parents and caregivers dealing with picky eaters and may be applied to school food service programs to increase F&Vs selections, displace empty calories, and ultimately produce overall benefits to the young, yet aging population

On the Emergent Spectra of Hot Protoplanet Collision Afterglows

We explore the appearance of terrestrial planets in formation by studying the emergent spectra of hot molten protoplanets during their collisional formation. While such collisions are rare, the surfaces of these bodies may remain hot at temperatures of 1000-3000 K for up to millions of years during the epoch of their formation. These object are luminous enough in the thermal infrared to be observable with current and next generation optical/IR telescopes, provided that the atmosphere of the forming planet permits astronomers to observe brightness temperatures approaching that of the molten surface. Detectability of a collisional afterglow depends on properties of the planet's atmosphere -- primarily on the mass of the atmosphere. A planet with a thin atmosphere is more readily detected, because there is little atmosphere to obscure the hot surface. Paradoxically, a more massive atmosphere prevents one from easily seeing the hot surface, but also keeps the planet hot for a longer time. In terms of planetary mass, more massive planets are also easier to detect than smaller ones because of their larger emitting surface areas. We present preliminary calculations assuming a range of protoplanet masses (1-10 M_\earth), surface pressures (1-1000 bar), and atmospheric compositions, for molten planets with surface temperatures ranging from 1000 to 1800 K, in order to explore the diversity of emergent spectra that are detectable. While current 8- to 10-m class ground-based telescopes may detect hot protoplanets at wide orbital separations beyond 30 AU (if they exist), we will likely have to wait for next-generation extremely large telescopes or improved diffraction suppression techniques to find terrestrial planets in formation within several AU of their host stars.Comment: 28 pages, 6 figures, ApJ manuscript format, accepted into the Ap

Rewiring Neural Interactions by Micro-Stimulation

Plasticity is a crucial component of normal brain function and a critical mechanism for recovery from injury. In vitro, associative pairing of presynaptic spiking and stimulus-induced postsynaptic depolarization causes changes in the synaptic efficacy of the presynaptic neuron, when activated by extrinsic stimulation. In vivo, such paradigms can alter the responses of whole groups of neurons to stimulation. Here, we used in vivo spike-triggered stimulation to drive plastic changes in rat forelimb sensorimotor cortex, which we monitored using a statistical measure of functional connectivity inferred from the spiking statistics of the neurons during normal, spontaneous behavior. These induced plastic changes in inferred functional connectivity depended on the latency between trigger spike and stimulation, and appear to reflect a robust reorganization of the network. Such targeted connectivity changes might provide a tool for rerouting the flow of information through a network, with implications for both rehabilitation and brain–machine interface applications

DNA-based Diagnosis of Uncharacterized Inherited Macrothrombocytopenias Using Next-generation Sequencing Technology with a Candidate Gene Array

Inherited macrothrombocytopenias comprise a heterogeneous group of inherited platelet disorders that are characterized by large platelets, thrombocytopenia and bleeding tendencies in affected individuals. Diagnostic platforms have traditionally involved a battery of complex phenotypic tests that often fail to reach a diagnosis. Next-generation sequencing lacks the pre-analytical and analytical shortcoming of these tests and provides an attractive alternate diagnostic approach. Our group has developed a candidate gene array targeting genes known to affect platelet function and tested it in a large cohort of Australasian patients with presumed platelet function disorders, particularly macrothrombocytopenia. This array identified causative variants in a significant portion of patients with uncharacterized platelet disorders, including transcription factor mutations that cannot easily be diagnosed with standard platelet phenotyping procedures. We propose that targeted genotypic screening can identify the genetic basis of platelet function defects and has the potential to be developed into a powerful clinical platform to help clinicians diagnose these rare disorders

A Precise Water Abundance Measurement for the Hot Jupiter WASP-43b

The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of planet formation. However, the water content of the Solar System giant planets is not well known because water is sequestered in clouds deep in their atmospheres. By contrast, short-period exoplanets have such high temperatures that their atmospheres have water in the gas phase, making it possible to measure the water abundance for these objects. We present a precise determination of the water abundance in the atmosphere of the 2 $M_\mathrm{Jup}$ short-period exoplanet WASP-43b based on thermal emission and transmission spectroscopy measurements obtained with the Hubble Space Telescope. We find the water content is consistent with the value expected in a solar composition gas at planetary temperatures (0.4-3.5x solar at 1 $\sigma$ confidence). The metallicity of WASP-43b's atmosphere suggested by this result extends the trend observed in the Solar System of lower metal enrichment for higher planet masses.Comment: Accepted to ApJL; this version contains three supplemental figures that are not included in the published paper. See also our companion paper "Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy" by Stevenson et a

Connecting the dots between climate change, household water insecurity, and migration

Climate change is now considered a primary global driver of migration, with water insecurity theorized to be a key determinant. Most studies have focused on large-scale climate migration events triggered by extreme weather events such as droughts, storms, or floods. But there are few studies of how climate change shapes the everyday household-level experience of water insecurity and subsequent migration decision-making, beyond the contexts of disasters and agricultural livelihoods—an invisible ‘slow drip’ of migration. This review proposes a complementary, alternative framework for linking climate change, household-level water insecurity, and environmental migration by positioning household water insecurity as a critical pathway for shaping migration decision-making in the context of socio-environmental change. We present evidence that household water insecurity is a push factor that motivates household members to migrate due to water-related disruptions to physical and mental health, livelihoods beyond agriculture, and social relationships. We close with implications for anti-poverty and development initiatives, and for water interventions to mitigate forced climate migration