126 research outputs found

    Developing identities within Roman Iberia: hybridity, urbanism, and economics in southern Iberia in the second and first centuries BC

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    This thesis examines the development of identities within Iberia during the Roman conquest of the peninsula through the lens of cultural hybridism, urbanism and economic changes. The aim is to explore how local Iberian communities evolved culturally through centuries of pre-Roman contact, and how these interactions fuelled later adaptations to Roman rule. Iberian communities, within this context, did not simply ‘become Roman’ but many acculturation theories have struggled to create alternatives to the ‘Romanization’ model successfully. While ‘Romanization’ is clearly problematic, this thesis will challenge and adapt several acculturation models to explore the visibility of cultural hybridity within ‘Roman’ and Iberian communities, and alternatively suggest the emergence of a pan-Mediterranean cultural background. These theories will then be applied in four case studies of prominent cities in southern Iberia: Italica (Santiponce), Hispalis (Sevilla), Corduba (Cordoba), and Augusta Emerita (Merida). In each of these case studies the thesis will address aspects of acculturation seen in the urban and economic evidence at those sites. The conclusion of this thesis will indicate that, while further study should be conducted, a more flexible approach to cultural identity should be considered in light of the evidence presented in the case of the evidence seen in these four towns

    Improving the Health Benefits of Snap Bean: Genome-Wide Association Studies of Total Phenolic Content

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    Snap beans are a significant source of micronutrients in the human diet. Among the micronutrients present in snap beans are phenolic compounds with known beneficial effects on human health, potentially via their metabolism by the gut-associated microbiome. The genetic pathways leading to the production of phenolics in snap bean pods remain uncertain. In this study, we quantified the level of total phenolic content (TPC) in the Bean Coordinated Agriculture Program (CAP) snap bean diversity panel of 149 accessions. The panel was characterized spectrophotometrically for phenolic content with a Folin-Ciocalteu colorimetric assay. Flower, seed and pod color were also quantified, as red, purple, yellow and brown colors are associated with anthocyanins and flavonols in common bean. Genotyping was performed through an Illumina Infinium Genechip BARCBEAN6K_3 single nucleotide polymorphism (SNP) array. Genome-Wide Association Studies (GWAS) analysis identified 11 quantitative trait nucleotides (QTN) associated with TPC. An SNP was identified for TPC on Pv07 located near the P gene, which is a major switch in the flavonoid biosynthetic pathway. Candidate genes were identified for seven of the 11 TPC QTN. Five regulatory genes were identified and represent novel sources of variation for exploitation in developing snap beans with higher phenolic levels for greater health benefits to the consumer

    Higher Derivative Corrections to R-charged Black Holes: Boundary Counterterms and the Mass-Charge Relation

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    We carry out the holographic renormalization of Einstein-Maxwell theory with curvature-squared corrections. In particular, we demonstrate how to construct the generalized Gibbons-Hawking surface term needed to ensure a perturbatively well-defined variational principle. This treatment ensures the absence of ghost degrees of freedom at the linearized perturbative order in the higher-derivative corrections. We use the holographically renormalized action to study the thermodynamics of R-charged black holes with higher derivatives and to investigate their mass to charge ratio in the extremal limit. In five dimensions, there seems to be a connection between the sign of the higher derivative couplings required to satisfy the weak gravity conjecture and that violating the shear viscosity to entropy bound. This is in turn related to possible constraints on the central charges of the dual CFT, in particular to the sign of c-a.Comment: 30 pages. v2: references added, some equations simplifie

    KELT-10b: The First Transiting Exoplanet from the KELT-South Survey -- A Hot Sub-Jupiter Transiting a V = 10.7 Early G-Star

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    We report the discovery of KELT-10b, the first transiting exoplanet discovered using the KELT-South telescope. KELT-10b is a highly inflated sub-Jupiter mass planet transiting a relatively bright V=10.7V = 10.7 star (TYC 8378-64-1), with Teff_{eff} = 5948±745948\pm74 K, logg\log{g} = 4.3190.030+0.0204.319_{-0.030}^{+0.020} and [Fe/H] = 0.090.10+0.110.09_{-0.10}^{+0.11}, an inferred mass M_{*} = 1.1120.061+0.0551.112_{-0.061}^{+0.055} M_{\odot} and radius R_{*} = 1.2090.035+0.0471.209_{-0.035}^{+0.047} R_{\odot}. The planet has a radius RP_{P} = 1.3990.049+0.0691.399_{-0.049}^{+0.069} RJ_{J} and mass MP_{P} = 0.6790.038+0.0390.679_{-0.038}^{+0.039} MJ_{J}. The planet has an eccentricity consistent with zero and a semi-major axis aa = 0.052500.00097+0.000860.05250_{-0.00097}^{+0.00086} AU. The best fitting linear ephemeris is T0T_{0} = 2457066.72045±\pm0.00027 BJDTDB_{TDB} and P = 4.1662739±\pm0.0000063 days. This planet joins a group of highly inflated transiting exoplanets with a radius much larger and a mass much less than those of Jupiter. The planet, which boasts deep transits of 1.4%, has a relatively high equilibrium temperature of Teq_{eq} = 137723+281377_{-23}^{+28} K, assuming zero albedo and perfect heat redistribution. KELT-10b receives an estimated insolation of 0.8170.054+0.0680.817_{-0.054}^{+0.068} ×\times 109^9 erg s1^{-1} cm2^{-2}, which places it far above the insolation threshold above which hot Jupiters exhibit increasing amounts of radius inflation. Evolutionary analysis of the host star suggests that KELT-10b is unlikely to survive beyond the current subgiant phase, due to a concomitant in-spiral of the planet over the next \sim1 Gyr. The planet transits a relatively bright star and exhibits the third largest transit depth of all transiting exoplanets with V << 11 in the southern hemisphere, making it a promising candidate for future atmospheric characterization studies.Comment: 20 pages, 13 figures, 7 tables, accepted for publication in MNRA

    'To live and die [for] Dixie': Irish civilians and the Confederate States of America

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    Around 20,000 Irishmen served in the Confederate army in the Civil War. As a result, they left behind, in various Southern towns and cities, large numbers of friends, family, and community leaders. As with native-born Confederates, Irish civilian support was crucial to Irish participation in the Confederate military effort. Also, Irish civilians served in various supporting roles: in factories and hospitals, on railroads and diplomatic missions, and as boosters for the cause. They also, however, suffered in bombardments, sieges, and the blockade. Usually poorer than their native neighbours, they could not afford to become 'refugees' and move away from the centres of conflict. This essay, based on research from manuscript collections, contemporary newspapers, British Consular records, and Federal military records, will examine the role of Irish civilians in the Confederacy, and assess the role this activity had on their integration into Southern communities. It will also look at Irish civilians in the defeat of the Confederacy, particularly when they came under Union occupation. Initial research shows that Irish civilians were not as upset as other whites in the South about Union victory. They welcomed a return to normalcy, and often 'collaborated' with Union authorities. Also, Irish desertion rates in the Confederate army were particularly high, and I will attempt to gauge whether Irish civilians played a role in this. All of the research in this paper will thus be put in the context of the Drew Gilpin Faust/Gary Gallagher debate on the influence of the Confederate homefront on military performance. By studying the Irish civilian experience one can assess how strong the Confederate national experiment was. Was it a nation without a nationalism

    KELT-14b and KELT-15b: an independent discovery of WASP-122b and a new hot Jupiter

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    We report the discovery of KELT-14b and KELT-15b, two hot Jupiters from the KELT-South survey. KELT-14b, an independent discovery of the recently announced WASP-122b, is an inflated Jupiter mass planet that orbits a similar to 5.0(-0.7)(+0.3) (0)7 Gyr, V= 11.0, G2 star that is near the main sequence turnoff. The host star, KELT-14 (TYC 7638-981-1), has an inferred mass M* = 1.18(-0.7)(+0.3) M-circle dot and radius R* = 1.37 +/- -0.08 R-circle dot), and has T-eff = 58021 K, log g* = 4.23(-0.7)(+0.3) SI and [Fe/H] = 0.33 +/- -0.09. The planet orbits with a period of 1.7100588 +/- 0.0000025 days (T-0 = 2457091.02863 +/- 0.00047) and has a radius R-p = 1.521 Ri and mass Mp = 1.196 +/- 0.072 MI, and the eccentricity is consistent with zero. KELT-15b is another inflated Jupiter mass planet that orbits a similar to 4.6(-0.4)(+0.5) Gyr, V = 11.2, GO star (TYC 8146-86-1) that is near the 'blue hook' stage of evolution prior to the Hertzsprung gap, and has an inferred mass M* = 1.181(0.050)(+0.05) M-circle dot and radius R* = 1.481 R-circle dot, and T-eff = 6003-% K, log g* = 4.17(-0.04)(+0.02) and [Fe/H] = 0.05 +/- 0.03. The planet orbits on a period of 3.329441 +/- 0.000016 days (T0 = 2457029.1663 0.0073) and has a radius Rp = 1.443 (o)Ols7 Ri and mass M-p = 0.91 531 MI and an eccentricity consistent with zero. KELT-14b has the second largest expected emission signal in the K-band for known transiting planets brighter than K < 10.5. Both KELT-14b and KELT-15b are predicted to have large enough emission signals that their secondary eclipses should be detectable using ground-based observatories

    Pan-Cancer Analysis of lncRNA Regulation Supports Their Targeting of Cancer Genes in Each Tumor Context

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    Long noncoding RNAs (lncRNAs) are commonly dys-regulated in tumors, but only a handful are known toplay pathophysiological roles in cancer. We inferredlncRNAs that dysregulate cancer pathways, onco-genes, and tumor suppressors (cancer genes) bymodeling their effects on the activity of transcriptionfactors, RNA-binding proteins, and microRNAs in5,185 TCGA tumors and 1,019 ENCODE assays.Our predictions included hundreds of candidateonco- and tumor-suppressor lncRNAs (cancerlncRNAs) whose somatic alterations account for thedysregulation of dozens of cancer genes and path-ways in each of 14 tumor contexts. To demonstrateproof of concept, we showed that perturbations tar-geting OIP5-AS1 (an inferred tumor suppressor) andTUG1 and WT1-AS (inferred onco-lncRNAs) dysre-gulated cancer genes and altered proliferation ofbreast and gynecologic cancer cells. Our analysis in-dicates that, although most lncRNAs are dysregu-lated in a tumor-specific manner, some, includingOIP5-AS1, TUG1, NEAT1, MEG3, and TSIX, synergis-tically dysregulate cancer pathways in multiple tumorcontexts
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