140 research outputs found

    Learning About Language

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    Life of Shong Lue Yang: Hmong 'Mother of Writing' (Keeb Kwm Soob Lwj Yaj: Hmoob 'Niam Ntawv').

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    The life story of Shong Lue Yang and the Vietnam War as seen from the under side is told here by two of Shong Lue's followers now living in the United States. Shong Lue was messianic figure who emerged among the Hmong people of Vietnam and Laos in 1959. He was assassinated and his movement violently crushed in 1971. The text is in three languages--Pahawh Hmong (Shong Lue's system), White Hmong, and English--presented simultaneously so that they may be compared.Southeast Asian Refugee Studies Project. Occasional Papers, Number Nine

    The thermal emission of the exoplanets WASP-1b and WASP-2b

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    We present a comparative study of the thermal emission of the transiting exoplanets WASP-1b and WASP-2b using the Spitzer Space Telescope. The two planets have very similar masses but suffer different levels of irradiation and are predicted to fall either side of a sharp transition between planets with and without hot stratospheres. WASP-1b is one of the most highly irradiated planets studied to date. We measure planet/star contrast ratios in all four of the IRAC bands for both planets (3.6-8.0um), and our results indicate the presence of a strong temperature inversion in the atmosphere of WASP-1b, particularly apparent at 8um, and no inversion in WASP-2b. In both cases the measured eclipse depths favor models in which incident energy is not redistributed efficiently from the day side to the night side of the planet. We fit the Spitzer light curves simultaneously with the best available radial velocity curves and transit photometry in order to provide updated measurements of system parameters. We do not find significant eccentricity in the orbit of either planet, suggesting that the inflated radius of WASP-1b is unlikely to be the result of tidal heating. Finally, by plotting ratios of secondary eclipse depths at 8um and 4.5um against irradiation for all available planets, we find evidence for a sharp transition in the emission spectra of hot Jupiters at an irradiation level of 2 x 10^9 erg/s/cm^2. We suggest this transition may be due to the presence of TiO in the upper atmospheres of the most strongly irradiated hot Jupiters.Comment: 10 pages, submitted to Ap

    Dynamic Reprogramming of the Kinome in Response to Targeted MEK Inhibition in Triple-Negative Breast Cancer

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    Kinase inhibitors have limited success in cancer treatment because tumors circumvent their action. Using a quantitative proteomics approach, we assessed kinome activity in response to MEK inhibition in triple negative breast cancer (TNBC) cells and genetically engineered mice (GEMMs). MEK inhibition caused acute ERK activity loss, resulting in rapid c-Myc degradation that induced expression and activation of several receptor tyrosine kinases (RTKs). RNAi knockdown of ERK or c-Myc mimicked RTK induction by MEK inhibitors, whereas prevention of proteasomal c-Myc degradation blocked kinome reprogramming. MEK inhibitor-induced RTK stimulation overcame MEK2 but not MEK1 inhibition, reactivating ERK and producing drug resistance. The C3Tag GEMM for TNBC similarly induced RTKs in response to MEK inhibition. The inhibitor-induced RTK profile suggested a kinase inhibitor combination therapy that produced GEMM tumor apoptosis and regression where single agents were ineffective. This approach defines mechanisms of drug resistance, allowing rational design of combination therapies for cancer

    Age dating of an early Milky Way merger via asteroseismology of the naked-eye star Μ Indi

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    Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies1. Although these accreted stellar populations can be forensically identified as kinematically distinct structures within the Galaxy, it is difficult in general to date precisely the age at which any one merger occurred. Recent results have revealed a population of stars that were accreted via the collision of a dwarf galaxy, called Gaia–Enceladus1, leading to substantial pollution of the chemical and dynamical properties of the Milky Way. Here we identify the very bright, naked-eye star Îœ Indi as an indicator of the age of the early in situ population of the Galaxy. We combine asteroseismic, spectroscopic, astrometric and kinematic observations to show that this metal-poor, alpha-element-rich star was an indigenous member of the halo, and we measure its age to be 11.0±0.7 (stat) ±0.8 (sys) billion years. The star bears hallmarks consistent with having been kinematically heated by the Gaia–Enceladus collision. Its age implies that the earliest the merger could have begun was 11.6 and 13.2 billion years ago, at 68% and 95% confidence, respectively. Computations based on hierarchical cosmological models slightly reduce the above limits

    An original phylogenetic approach identified mitochondrial haplogroup T1a1 as inversely associated with breast cancer risk in BRCA2 mutation carriers

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    Introduction: Individuals carrying pathogenic mutations in the BRCA1 and BRCA2 genes have a high lifetime risk of breast cancer. BRCA1 and BRCA2 are involved in DNA double-strand break repair, DNA alterations that can be caused by exposure to reactive oxygen species, a main source of which are mitochondria. Mitochondrial genome variations affect electron transport chain efficiency and reactive oxygen species production. Individuals with different mitochondrial haplogroups differ in their metabolism and sensitivity to oxidative stress. Variability in mitochondrial genetic background can alter reactive oxygen species production, leading to cancer risk. In the present study, we tested the hypothesis that mitochondrial haplogroups modify breast cancer risk in BRCA1/2 mutation carriers. Methods: We genotyped 22,214 (11,421 affected, 10,793 unaffected) mutation carriers belonging to the Consortium of Investigators of Modifiers of BRCA1/2 for 129 mitochondrial polymorphisms using the iCOGS array. Haplogroup inference and association detection were performed using a phylogenetic approach. ALTree was applied to explore the reference mitochondrial evolutionary tree and detect subclades enriched in affected or unaffected individuals. Results: We discovered that subclade T1a1 was depleted in affected BRCA2 mutation carriers compared with the rest of clade T (hazard ratio (HR) = 0.55; 95% confidence interval (CI), 0.34 to 0.88; P = 0.01). Compared with the most frequent haplogroup in the general population (that is, H and T clades), the T1a1 haplogroup has a HR of 0.62 (95% CI, 0.40 to 0.95; P = 0.03). We also identified three potential susceptibility loci, including G13708A/rs28359178, which has demonstrated an inverse association with familial breast cancer risk. Conclusions: This study illustrates how original approaches such as the phylogeny-based method we used can empower classical molecular epidemiological studies aimed at identifying association or risk modification effects.Peer reviewe

    Dam Bo : Les populations montagnardes du Sud-Indochinois (pemsiens) Jacques Dournes : Recueil des coutumes SrĂȘ du Haut-Donnai Jacques Dournes : Dictionnaire srĂȘ (köho)- français Gilbert Bochet et Jacques Dournes : Lexique polyglotte (vietnamien, köho, röglai, français)

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    Smalley William A. Dam Bo : Les populations montagnardes du Sud-Indochinois (pemsiens) Jacques Dournes : Recueil des coutumes SrĂȘ du Haut-Donnai Jacques Dournes : Dictionnaire srĂȘ (köho)- français Gilbert Bochet et Jacques Dournes : Lexique polyglotte (vietnamien, köho, röglai, français). In: Bulletin de l'Ecole française d'ExtrĂȘme-Orient. Tome 47 N°2, 1955. pp. 653-661

    Dam Bo : Les populations montagnardes du Sud-Indochinois (pemsiens) Jacques Dournes : Recueil des coutumes SrĂȘ du Haut-Donnai Jacques Dournes : Dictionnaire srĂȘ (köho)- français Gilbert Bochet et Jacques Dournes : Lexique polyglotte (vietnamien, köho, röglai, français)

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    Smalley William A. Dam Bo : Les populations montagnardes du Sud-Indochinois (pemsiens) Jacques Dournes : Recueil des coutumes SrĂȘ du Haut-Donnai Jacques Dournes : Dictionnaire srĂȘ (köho)- français Gilbert Bochet et Jacques Dournes : Lexique polyglotte (vietnamien, köho, röglai, français). In: Bulletin de l'Ecole française d'ExtrĂȘme-Orient. Tome 47 N°2, 1955. pp. 653-661

    Annual replenishment of bed material by sediment transport in the Wind River near Riverton, Wyoming /

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    Shipping list no.: 94-0120-P.Running title: Bed material, Wind River near Riverton, Wyoming.Spine title: Sediment transport in the Wind River near Riverton, Wyoming.Includes bibliographical references (p. 23).Mode of access: Internet
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