110 research outputs found

    Exploring Amaranth’s Color Palette: Linking Phenotype, Plant Adaptation, and Human Health

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    Amaranthus is a genus containing species that are highly desirable, yet underutilized crops and species that are highly despised pernicious agricultural weeds. Cultivated species are primarily grown as nutritious pseudograins, colorful ornamentals, or leafy greens and are recognized for tolerance to heat, drought, and salinity. Weedy amaranths possess similar adaptive traits, in addition to evolved resistance to numerous herbicides, and pose severe challenges to global agriculture. Plant pigments (i.e., betalains, carotenoids) are central to understanding this impressive diversity of phenotypes and adaptive traits

    Signatures of impact-driven atmospheric loss in large ensembles of exoplanets

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    The results of large-scale exoplanet transit surveys indicate that the distribution of small planet radii is likely sculpted by atmospheric loss. Several possible physical mechanisms exist for this loss of primordial atmospheres, each of which produces a different set of observational signatures. In this study, we investigate the impact-driven mode of atmosphere loss via N-body simulations. We compare the results from giant impacts, at a demographic level, to results from another commonly-invoked method of atmosphere loss: photoevaporation. Applying two different loss prescriptions to the same sets of planets, we then examine the resulting distributions of planets with retained primordial atmospheres. As a result of this comparison, we identify two new pathways toward discerning the dominant atmospheric loss mechanism at work. Both of these pathways involve using transit multiplicity as a diagnostic, in examining the results of follow-up atmospheric and radial velocity surveys.Comment: 17 pages, 10 figures, Submitted to Ap

    Strategy, intentionality, and impact: A purchasing plan for library promotional swag

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    The labor and expense involved in developing a comprehensive outreach program can be overwhelming. There are often additional expenditures for marketing and promotional items to support the outreach events that go beyond costs of planning and staffing outreach activities. The Texas A&M University Libraries boast a robust outreach program—library employees participate in more than 100 outreach activities each calendar year. We developed programmatic strategies for improving the cost and labor efficiency of both purchasing and managing the distribution of library-branded promotional items as a part of these outreach efforts. Colloquially, these items are known as swag. This chapter will provide insight into why and how we created a swag inventory system to support our outreach program

    Decisions and the Evolution of Memory: Multiple Systems, Multiple Functions

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    Memory evolved to supply useful, timely information to the organism’s decision-making systems. Therefore, decision rules, multiple memory systems, and the search engines that link them should have coevolved to mesh in a coadapted, functionally interlocking way. This adaptationist perspective suggested the scope hypothesis: When a generalization is retrieved from semantic memory, episodic memories that are inconsistent with it should be retrieved in tandem to place boundary conditions on the scope of the generalization. Using a priming paradigm and a decision task involving person memory, the authors tested and confirmed this hypothesis. The results support the view that priming is an evolved adaptation. They further show that dissociations between memory systems are not—and should not be—absolute: Independence exists for some tasks but not others

    Strategy, intentionality, and impact: A purchasing plan for library promotional swag

    Get PDF
    The labor and expense involved in developing a comprehensive outreach program can be overwhelming. There are often additional expenditures for marketing and promotional items to support the outreach events that go beyond costs of planning and staffing outreach activities. The Texas A&M University Libraries boast a robust outreach program—library employees participate in more than 100 outreach activities each calendar year. We developed programmatic strategies for improving the cost and labor efficiency of both purchasing and managing the distribution of library-branded promotional items as a part of these outreach efforts. Colloquially, these items are known as swag. This chapter will provide insight into why and how we created a swag inventory system to support our outreach program

    Socio-Emotional Functioning and Face Recognition Ability in the Normal Population

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    Recent research indicates face recognition ability varies within the normal population. To date, two factors have been identified that influence this cognitive process: the age and gender of the perceiver. In this paper, we examine the influence of socio-emotional functioning on face recognition ability. We invited participants with high and low levels of empathy (as indicated by the Empathy Quotient) to take part in a face recognition test. Participants were asked to study a set of faces, and at test viewed the studied faces intermixed with novel faces. As predicted, high empaths achieved higher scores in the face recognition test compared to low empaths. This pattern of findings provides further evidence that face recognition ability varies within the normal population, and suggests socio-emotional functioning may be an additional factor that influences face recognition ability

    Searching for Inflow Towards Massive Starless Clump Candidates Identified in the Bolocam Galactic Plane Survey

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    Recent Galactic plane surveys of dust continuum emission at long wavelengths have identified a population of dense, massive clumps with no evidence for on-going star formation. These massive starless clump candidates are excellent sites to search for the initial phases of massive star formation before the feedback from massive star formation effects the clump. In this study, we search for the spectroscopic signature of inflowing gas toward starless clumps, some of which are massive enough to form a massive star. We observed 101 starless clump candidates identified in the Bolocam Galactic Plane Survey (BGPS) in HCO+ J = 1-0 using the 12m Arizona Radio Observatory telescope. We find a small blue excess of E = (Nblue - Nred)/Ntotal = 0.03 for the complete survey. We identified 6 clumps that are good candidates for inflow motion and used a radiative transfer model to calculate mass inflow rates that range from 500 - 2000 M /Myr. If the observed line profiles are indeed due to large-scale inflow motions, then these clumps will typically double their mass on a free fall time. Our survey finds that massive BGPS starless clump candidates with inflow signatures in HCO+ J = 1-0 are rare throughout our Galaxy.Comment: 14 pages, 9 figure

    The Vehicle, Spring 2004

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    Table of Contents Mother Nature\u27s PotentialsChristina Leepage 4 The Elephant in the RoomErika Olsenpage 5 Sin of MortalsHeather Harmonpage 6 Autumn GoldBrianne Kennedypage 7 Flight to the SeaBrianne Kennedypage 8 SmileTravis A. Probstpage 9 The BodyLavada Rainierpage 10 GuessTravis A. Probstpage 11 MonopolyCatherine Apodacapage 12 MourningLavada Rainierpage 13 A Premonition During My Sister\u27s PregnancyLavada Rainierpage 14 The Things I LoveSarah Chancepage 15 Flights of BirdsLavada Rainierpage 16 The Slumbering LibrarianJosh Sopiarzpage 16 Untitled (1)Josh Reeleypage 18 Untitled (2)Josh Reeleypage 19 Untitled (3)Josh Reeleypage 20 Self-IntrospectionLiz Toyntonpage 21 Mother\u27s DayCatherine Apodacapage 22 CarolJosh Sopiarzpage 23 PerhapsWillie Griggspage 24 PoemWillie Griggspage 25 In Longing for WealthWillie Griggspage 26 Crisis by DesignCatherine Apodacapage 27 UntitledLiz Toyntonpage 28 SleetCara Moranpage 29https://thekeep.eiu.edu/vehicle/1081/thumbnail.jp

    The Vehicle, Spring 2004

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    Table of Contents Mother Nature\u27s PotentialsChristina Leepage 4 The Elephant in the RoomErika Olsenpage 5 Sin of MortalsHeather Harmonpage 6 Autumn GoldBrianne Kennedypage 7 Flight to the SeaBrianne Kennedypage 8 SmileTravis A. Probstpage 9 The BodyLavada Rainierpage 10 GuessTravis A. Probstpage 11 MonopolyCatherine Apodacapage 12 MourningLavada Rainierpage 13 A Premonition During My Sister\u27s PregnancyLavada Rainierpage 14 The Things I LoveSarah Chancepage 15 Flights of BirdsLavada Rainierpage 16 The Slumbering LibrarianJosh Sopiarzpage 16 Untitled (1)Josh Reeleypage 18 Untitled (2)Josh Reeleypage 19 Untitled (3)Josh Reeleypage 20 Self-IntrospectionLiz Toyntonpage 21 Mother\u27s DayCatherine Apodacapage 22 CarolJosh Sopiarzpage 23 PerhapsWillie Griggspage 24 PoemWillie Griggspage 25 In Longing for WealthWillie Griggspage 26 Crisis by DesignCatherine Apodacapage 27 UntitledLiz Toyntonpage 28 SleetCara Moranpage 29https://thekeep.eiu.edu/vehicle/1081/thumbnail.jp
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