1,721,172 research outputs found
Catholic Comments Podcast.
No full textBrother Guy Consolmagno, S.J. discusses the relationship between the Church, science, and astronomy.
Brother Guy is the keeper of the meteorite collection at the Vatican Observatory
When Science Goes Wrong - and Why We Love It!
Full text linkThe college welcomed its first Chu Lecture speaker, Brother Guy Consolmagno, SJ, in March 2024 with his talk “When Science Goes Wrong — And Why We Love It!”
A native of Detroit, Consolmagno earned bachelor’s and master’s degrees from Massachusetts Institute of Technology (MIT) and a Ph.D. in planetary science from the University of Arizona. He was a postdoctoral research fellow at Harvard and MIT and taught physics at Lafayette College before becoming a Jesuit in 1989. He’s been at the Vatican Observatory since 1993 and was appointed director by Pope Francis in 2015
Compositional mapping of Vesta quadrangle V24
No full textThe Dawn spacecraft [1] entered orbit around Vesta in mid-July 2011. Since then, the Visible and InfraRed Imaging Spectrometer (VIR) [2] acquired hyperspectral images of Vesta’s surface in the overall wavelength range from 0.25 to 5.1 μm. During the Approach and Survey mission phases (23 July through 29 August 2011), VIR obtained resolved images of Vesta with spatial resolutions between 1.31 km and 0.68 km/pix. More than 65% of the surface, from the South Pole up to ∼40°N, was observed under different illumination conditions and local solar elevations. Based on this datasets, a series of four quadrangle maps following the scheme in [3] are being produced showing the results derived from the spectroscopic analysis of VIR data. In this work we present the results of the spectroscopic analysis achieved for the quadrangle V-24, which covers Vesta’s southern polar region 55°S - 90°S and longitude 0° - 360°
Book revew: Gods mechanics: How scientists and engineers make sense of religion, by Guy Consolmagno, S. J.
No full textBook revew: Gods mechanics: How scientists and engineers make sense of religion, by Guy Consolmagno, S. J. Reviewed by: H.C. Connolly Jr
Recommended from our members
Book Review: God's Mechanics: How Scientists and Engineers Make Sense of Religion, S. J. Guy Consolmagno
No full textBook Review: God's Mechanics: How Scientists and Engineers Make Sense of Religion, S. J. Guy Consolmagno. S. J. San Francisco: Jossey-Bass (2008).The Meteoritics & Planetary Science archives are made available by the Meteoritical Society and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform February 202
A Binaphthyl-Bridged Salen Zirconium Catalyst Affording Atactic Poly(propylene) and Isotactic Poly(a-olefins)
No full textA binaphthyl-bridged salen dichlorozirconium
(IV) complex that displays an octahedral structure with a
trans-O, cis-N, and cis-Cl arrangement was synthesized and
tested as a precatalyst for ethylene and a-olefin polymerization.
While use of methylaluminoxane (MAO) cocatalyst
afforded poor catalytic activity, activation by mixtures of
aluminium alkyls such as AliBu3 and either MAO or
[CPh3][B(C6F5)4] resulted in reasonable polymerization
activities for ethylene, propene, and higher a-olefins. Quite
unexpectedly, while the polymerization of propene results in
the production of a high-molecular-weight stereoirregular
polymer, highly isotactic polymers are obtained under similar
conditions from polymerization of 1-butene, 1-pentene, and
1-hexene
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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