8,556 research outputs found
Geological map of the Sulphur Bank District [cartographic material] /
No full textMap of part of the area adjacent ot Clear Lake, California. Relief shown by contour lines.; Sheet 4 from: Atlas to accompany a monograph of the geology of the quicksilver deposits of the Pacific slope / by George F. Becker.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-rm2079
A plan of the town of Payta in the kingdom of Santa-Fee lying in the latitude of 5 d. 12 m. S* [cartographic material].
No full textPlan of the town of Paita, Peru.; Pl. [17/A] of: A voyage round the world in the years MDCCXL, I, II, III, IV, by George Anson. London : Printed for the author by John and Paul Knapton ... , 1748.; A.E. Nordenskield, v. 3, 326; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-an24313818
A Chart of the Pacific Ocean [cartographic material] : from the Equinoctial to the latitude of 39 1/2 d No.
No full textMap of the Pacific Ocean showing tracks of Nostra Senora de Cabadonga and routes taken by Commodore Anson.; "R.W. Seale sculp."; Pl. [28/A] of: A voyage round the world in the years MDCCXL, I, II, III, IV, by George Anson. London : Printed for the author by John and Paul Knapton ... , 1748.; Prime meridian: San Bernardino.; A.E. Nordenskield, v. 3, 326; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-an24313979
Warm dark matter as a solution to the small scale crisis: New constraints from high redshift Lyman-α forest data
No full textA plan of Iuan Fernandes Island in the South Sea, lying in the latitude of 33d 40 m South, and West from the continent of Chili 110 leagues [cartographic material] : variation of the compass 10 d 00 m E.
No full textMap of Juan Fernandez Islands. Relief shown pictorially and by soundings.; Pl. [13/B] of: A voyage round the world in the years MDCCXL, I, II, III, IV, by George Anson. London : Printed for the author by John and Paul Knapton ... , 1748.; A.E. Nordenskield, v. 3, 326; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-an24313763
Data Set of PLOS Computational Paper PCOMPBIOL-D-18-02181R1
No full textFigures Data of PLOS Computational paper:Modeling of the axon plasma membrane structure and its effects on protein diffusionAuthors: Yihao Zhang, Anastasios V. Tzingounis, and George LykotrafitisCorresponding Author: George Lykotrafitis, Ph.D.University of ConnecticutStorss, CT UNITED STATES</div
Letter from George W. Kimball, Tusayan National Forest, to Carl Hayden
No full textLetter from George W. Kimball to Carl Hayden with an enclosed map detailing the cattle and sheep allotments on the portion of the Tusyan Forest next to the Grand Canyon. Listed are names of permit holders in both stock and allotment that are most likely to trespass into the park. The names are: W. F. Griffin, W. W. Bass, H. R. Lauzon, Swanner and Griffin, Bankhead and Henderson, Martin Buggeln, Babbitt Brothers, Sanford Rowe, and P. D. Berry
First constraints on fuzzy dark matter from Lyman-alpha forest data and hydrodynamical simulations
No full textWe present constraints on the masses of extremely light bosons dubbed fuzzy dark matter from Lyman- α forest data. Extremely light bosons with a De Broglie wavelength of ~ 1 kpc have been suggested as dark matter candidates that may resolve some of the current small scale problems of the cold dark matter model. For the first time we use hydrodynamical simulations to model the Lyman- α flux power spectrum in these models and compare with the observed flux power spectrum from two different data sets: the XQ-100 and HIRES/MIKE quasar spectra samples. After marginalization over nuisance and physical parameters and with conservative assumptions for the thermal history of the IGM that allow for jumps in the temperature of up to 5000 K, XQ-100 provides a lower limit of 7.1 x 10 -22 eV, HIRES/MIKE returns a stronger limit of 14.3 x 10 -22 eV, while the combination of both data sets results in a limit of 20 x 10 -22 eV (2σ C.L.). The limits for the analysis of the combined data sets increases to 37.5 x 10 -22 eV (2σ C.L.) when a smoother thermal history is assumed where the temperature of the IGM evolves as a power-law in redshift. Light boson masses in the range 1 - 10 x 10 -22 eV are ruled out at high significance by our analysis, casting strong doubts on suggestions of significant strophysical implications of FDM, in particular for solving the "small scale crisis" of cold dark matter model
The photoheating of the intergalactic medium in synthesis models of the UV background
No full textWe compare cosmological hydrodynamical simulations combined with the homogeneous metagalactic UV background (UVB) of Haardt & Madau (2012) (HM2012) to observations of the Lyman-alpha forest that are sensitive to the thermal and ionization state of the intergalactic medium (IGM). The transition from optically thick to thin photoheating predicted by the simple one-zone, radiative transfer model implemented by HM2012 predicts a thermal history that is in remarkably good agreement with the observed rise of the IGM temperature at z~3 if we account for the expected evolution of the volume filling factor of HeIII. Our simulations indicate that there may be, however, some tension between the observed peak in the temperature evolution and the rather slow evolution of the HeII opacities suggested by recent Hubble Space Telescope/COS measurements. The HM2012 UVB also underpredicts the metagalactic hydrogen photoionization rate required by our simulations to match the observed opacity of the forest at z>4 and z<2
Letter to Dr. George L. Haller re: attached letter from second author in praise of L.--Correspondence
No full textLetter to Dr. George L. Haller re: attached letter from second author in praise of L. D. Miles' contribution to the Value Engineering Conference held in Boston
- …
