Institution
Rensselaer Polytechnic Institute
Education•Troy, New York, United States•
About: Rensselaer Polytechnic Institute is a education organization based out in Troy, New York, United States. It is known for research contribution in the topics: Terahertz radiation & Population. The organization has 19024 authors who have published 39922 publications receiving 1414699 citations. The organization is also known as: RPI & Rensselaer Institute.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: This article examined the relationship between measures of subjective well-being and attitudes regarding ozone pollution and species extinction using data from the British Household Panel Survey and found that a negative coefficient for concern about ozone pollution on individual's wellbeing and a positive one for concern regarding species extinction.
383 citations
••
University of Cambridge1, University of Hawaii at Manoa2, Rensselaer Polytechnic Institute3, Fermilab4, Los Alamos National Laboratory5, Austin Peay State University6, Max Planck Society7, Ohio State University8, Johns Hopkins University9, New York University10, University of Basel11, Pennsylvania State University12, Michigan State University13, New Mexico State University14, National Institutes of Natural Sciences, Japan15, Pedagogical University16
TL;DR: In this article, a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging, was studied.
Abstract: In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging. Its color-magnitude diagram (CMD) shows a well-defined subgiant branch, main sequence, and turnoff, from which we estimate a distance of ~30 kpc and a projected size of ~250 × 125 pc2. The CMD suggests a composite population with some range in metallicity and/or age. Based on its extent and stellar population, we argue that this is a previously unknown satellite galaxy of the Milky Way, hereby named Ursa Major II (UMa II) after its constellation. Using SDSS data, we find an absolute magnitude of MV ~ -3.8, which would make it the faintest known satellite galaxy. UMa II's isophotes are irregular and distorted with evidence for multiple concentrations; this suggests that the satellite is in the process of disruption.
383 citations
••
TL;DR: The experimental dissolution of zircon into a powdery felsic melt of variable water content at high pressure in the temperature range 1,020° to 1,500° C provides information related to 1) the solubility of Zircon, 2) the diffusion kinetics of Zr in an obsidian melt, and 3) the rate of dissolution as discussed by the authors.
Abstract: The experimental dissolution of zircon into a zircon-undersaturated felsic melt of variable water content at high pressure in the temperature range 1,020° to 1,500° C provides information related to 1) the solubility of zircon, 2) the diffusion kinetics of Zr in an obsidian melt, and 3) the rate of zircon dissolution. Zirconium concentration profiles observed by electron microprobe in the obsidian glass adjacent to a large, polished zircon face provide sufficient information to calculate model diffusion coefficients. Results of dissolution experiments conducted in the virtual absence of water (<0.2% H2O) yield an activation energy (E) for Zr transport in a melt ofM=1.3 [whereM is the cation ratio (Na+K+2Ca)/(Al·Si)] of 97.7±2.8 kcal-mol−1, and a frequency factor (D
0) of 980
−580
+1,390
cm2-sec−1. Hydrothermal experiments provide an E=47.3±1.9 kcal-mol−1 andD
0=0.030
−0.015
+0.030
cm2-sec−1. Both of these results plot close to a previously defined diffusion compensation line for cations in obsidian. The diffusivity of Zr at 1,200° C increases by a factor of 100 over the first 2% of water introduced into the melt, but subsequently rises by only a factor of five to an apparent plateau value of ∼2×10−9 cm2-sec−1 by ∼6% total water content. The remarkable contrast between the wet and dry diffusivities, which limits the rate of zircon dissolution into granitic melt, indicates that a 50 μm diameter zircon crystal would dissolve in a 3 to 6% water-bearing melt at 750° C in about 100 years, but would require in excess of 200 Ma to dissolve in an equivalent dry system. From this calculation we conclude that zircon dissolution proceeds geologically instantaneously in an undersaturated, water-bearing granite. Estimates of zircon solubility in the obsidian melt in the temperature range of 1,020° C to 1,500° C confirm and extend an existing model of zircon solubility to these higher temperatures in hydrous melts. However, this model does not well describe zircon saturation behavior in systems with less than about 2% water.
383 citations
••
TL;DR: Recent research suggests that the search for a more detailed hypothesis regarding the relationship between interface mechanics and biology should take account of basic bone physiology, e.g. wound healing after implantation plus basic processes of bone modeling and remodeling.
383 citations
••
TL;DR: In this paper, the authors examined the moderating effect of entrepreneurial self-efficacy on the relationship of founders' improvisational behavior with both the performance of their startups and their individual level of work satisfaction using a national (United States) random sample of 159 entrepreneurs.
381 citations
Authors
Showing all 19133 results
Name | H-index | Papers | Citations |
---|---|---|---|
Pulickel M. Ajayan | 176 | 1223 | 136241 |
Zhenan Bao | 169 | 865 | 106571 |
Murray F. Brennan | 161 | 925 | 97087 |
Ashok Kumar | 151 | 5654 | 164086 |
Joseph R. Ecker | 148 | 381 | 94860 |
Bruce E. Logan | 140 | 591 | 77351 |
Shih-Fu Chang | 130 | 917 | 72346 |
Michael G. Rossmann | 121 | 594 | 53409 |
Richard P. Van Duyne | 116 | 409 | 79671 |
Michael Lynch | 112 | 422 | 63461 |
Angel Rubio | 110 | 930 | 52731 |
Alan Campbell | 109 | 687 | 53463 |
Boris I. Yakobson | 107 | 443 | 45174 |
O. C. Zienkiewicz | 107 | 455 | 71204 |
John R. Reynolds | 105 | 607 | 50027 |