Browsing MIT Open Access Articles by Title
Now showing items 20552-20571 of 56061
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H 2 -dominated Atmosphere as an Indicator of Second-generation Rocky White Dwarf Exoplanets
(American Astronomical Society, 2022)<jats:title>Abstract</jats:title> <jats:p>Following the discovery of the first exoplanet candidate transiting a white dwarf (WD), a “white dwarf opportunity” for characterizing the atmospheres of terrestrial ... -
H i 21 cm Cosmology and the Bi-spectrum: Closure Diagnostics in Massively Redundant Interferometric Arrays
(2018)New massively redundant low frequency arrays allow for a novel investigation of closure relations in interferometry. We employ commissioning data from the Hydrogen Epoch of Reionization Array to investigate closure ... -
H i constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps
(Oxford University Press (OUP), 2022)<jats:title>ABSTRACT</jats:title> <jats:p>We present the joint analysis of Neutral Hydrogen (H i) Intensity Mapping observations with three galaxy samples: the Luminous Red Galaxy (LRG) and Emission Line ... -
H I observations of the asymptotic giant branch star X Herculis: Discovery of an extended circumstellar wake superposed on a compact high-velocity cloud
(IOP Publishing, 2011-01)We report H I 21 cm line observations of the asymptotic giant branch (AGB) star X Her obtained with the Robert C. Byrd Green Bank Telescope (GBT) and the Very Large Array. We have unambiguously detected H I emission ... -
H I-SELECTED GALAXIES IN THE SLOAN DIGITAL SKY SURVEY. I. OPTICAL DATA
(IOP Publishing, 2009-12)We present the optical data for 195 H I-selected galaxies that fall within both the Sloan Digital Sky Survey (SDSS) and the Parkes Equatorial Survey (ES). The photometric quantities have been independently recomputed for ... -
H I-SELECTED GALAXIES IN THE SLOAN DIGITAL SKY SURVEY. II. THE COLORS OF GAS-RICH GALAXIES
(IOP Publishing, 2009-07)We utilize color information for an H I-selected sample of 195 galaxies to explore the star formation histories and physical conditions that produce the observed colors. We show that the H I selection creates a significant ... -
H-MOOC framework: reusing MOOCs for hybrid education
(Springer US, 2017-01)Since Massive Open Online Courses (MOOCs) started to become part of the scene of Higher Education (HE), many institutions have joined the race of MOOC creation. However, producing MOOCs has shown to be a cumbersome and ... -
H. hepaticus-induced liver tumor promotion is associated with increased serum bile acid and a persistent microbial-induced immune response
(American Association for Cancer Research, 2011-02)Chronic microbial infection influences cancer progression, but the mechanisms that link them remain unclear. Constitutive androstane receptor (CAR) is a nuclear receptor that regulates enzymes involved in endobiotic and ... -
H2A.Z Acidic Patch Couples Chromatin Dynamics to Regulation of Gene Expression Programs during ESC Differentiation
(Public Library of Science, 2013-08)The histone H2A variant H2A.Z is essential for embryonic development and for proper control of developmental gene expression programs in embryonic stem cells (ESCs). Divergent regions of amino acid sequence of H2A.Z likely ... -
H2A.Z landscapes and dual modifications in pluripotent and multipotent stem cells underlie complex genome regulatory functions
(BioMed Central Ltd, 2012-10)Abstract Background The histone variant H2A.Z has been implicated in nucleosome exchange, transcriptional activation and Polycomb repression. However, the relationships among these seemingly disparate functions remain ... -
H2A.Z landscapes and dual modifications in pluripotent and multipotent stem cells underlie complex genome regulatory functions
(Biomed Central Ltd., 2012-10)Background: The histone variant H2A.Z has been implicated in nucleosome exchange, transcriptional activation and Polycomb repression. However, the relationships among these seemingly disparate functions remain obscure. Results: ... -
H2A.Z.1 Monoubiquitylation Antagonizes BRD2 to Maintain Poised Chromatin in ESCs
(Elsevier, 2016-01)Histone variant H2A.Z occupies the promoters of active and poised, bivalent genes in embryonic stem cells (ESCs) to regulate developmental programs, yet how it contributes to these contrasting states is poorly understood. ... -
H2A.Z: a molecular rheostat for transcriptional control
(Faculty of 1000, Ltd., 2015-01)The replacement of nucleosomal H2A with the histone variant H2A.Z is critical for regulating DNA-mediated processes across eukaryotes and for early development of multicellular organisms. How this variant performs these ... -
H2O-rich mantle melting near the slab–wedge interface
(Springer Berlin Heidelberg, 2019-09-17)Abstract To investigate the first melts of the mantle wedge in subduction zones and their relationship to primitive magmas erupted at arcs, the compositions of low degree melts of hydrous garnet lherzolite ... -
H3.3 Nucleosome Assembly Mutants Display a Late-Onset Maternal Effect
(Elsevier BV, 2020)© 2020 Elsevier Inc. Burkhart et al. show that mutants lacking components of H3.3 assembly complexes have pleiotropic defects that manifest near the onset of adulthood. Mitochondrial stress likely contributes to these ... -
H5N1 highly pathogenic avian influenza virus isolated from conjunctiva of a whooper swan with neurological signs
(Springer Vienna, 2012-10)An H5N1 highly pathogenic avian influenza virus was isolated from conjunctiva of a whooper swan with neurological signs, which was captured during the latest H5N1 HPAI outbreak in Japan. The conjunctival swab contained a ... -
H[subscript 2]-assisted CO[subscript 2] thermochemical reduction on La[subscript 0.9]Ca[subscript 0.1]FeO[subscript 3-δ] membranes: a kinetics study
(Wiley Blackwell, 2017-11)Kinetics data for CO2 thermochemical reduction in an isothermal membrane reactor is required to identify the rate-limiting steps. Here, we report a detailed reaction kinetics study on this process supported by an ... -
H[subscript 2]-optimal decentralized control over posets: A state space solution for state-feedback
(Institute of Electrical and Electronics Engineers (IEEE), 2010-12)We develop a complete state-space solution to ℋ[subscript 2]-optimal decentralized control of poset-causal systems with state-feedback. Our solution is based on the exploitation of a key separability property of the problem, ... -
H[subscript 2]-Optimal Decentralized Control Over Posets: A State-Space Solution for State-Feedback
(Institute of Electrical and Electronics Engineers (IEEE), 2013-09)We develop a complete state-space solution to H[subscript 2]-optimal decentralized control of poset-causal systems with state-feedback. Our solution is based on the exploitation of a key separability property of the problem ... -
de Haas-van Alphen effect of correlated Dirac states in kagome metal Fe3Sn2
(Springer Science and Business Media LLC, 2019-10)Primarily considered a medium of geometric frustration, there has been a growing recognition of the kagome network as a harbor of lattice-borne topological electronic phases. In this study we report the observation of ...
