180 research outputs found
McCrary, Lyman B. - An inaugural dissertation on typhoid fever
No full textHandwritten inaugural dissertation on typhoid fever by Lyman B. McCrary, of Alabama.Inaugural dissertation; no. 437
Lyman break galaxies and the star formation rate of the Universe at z ~ 6
No full textWe determine the space density of UV-luminous starburst galaxies at z≈ 6 using deep HST ACS SDSS-i′ (F775W) and SDSS-z′ (F850LP) and VLT ISAAC J and Ks band imaging of the Chandra Deep Field South. We find eight galaxies and one star with (i′−z′) > 1.5 to a depth of z′AB= 25.6 (an 8σ detection in each of the 3 available ACS epochs). This corresponds to an unobscured star formation rate of ≈15 h−270 M⊙ yr−1 at z= 5.9, equivalent to L* for the Lyman-break population at z= 3–4 (ΩΛ= 0.7, ΩM= 0.3). We are sensitive to star-forming galaxies at 5.6 ≲z≲ 7.0 with an effective comoving volume of ≈1.8 × 105h−370 Mpc3 after accounting for incompleteness at the higher redshifts due to luminosity bias. This volume should encompass the primeval subgalactic-scale fragments of the progenitors of about a thousand L* galaxies at the current epoch. We determine a volume-averaged global star formation rate of (6.7 ± 2.7) × 10−4h70 M⊙ yr−1 Mpc−3 at z∼ 6 from rest-frame UV selected starbursts at the bright end of the luminosity function: this is a lower limit because of dust obscuration and galaxies below our sensitivity limit. This measurement shows that at z∼ 6 the star formation density at the bright end is a factor of ∼6 times less than that determined by Steidel et al. for a comparable sample of UV-selected galaxies at z= 3–4, and so extends our knowledge of the star formation history of the Universe to earlier times than previous work and into the epoch where reionization may have occurred
Lyman Trumbull: Author of the Thirteenth Amendment, Author of the Civil Rights Act, and the First Second Amendment Lawyer
No full textThis Article provides the first legal biography of lawyer and Senator Lyman Trumbull, one of the most important lawyers and politicians of the nineteenth century. Early in his career, as the leading anti-slavery lawyer in Illinois in the 1830s, he won the cases constricting and then abolishing slavery in that state; six decades later, Trumbull represented imprisoned labor leader Eugene Debs in the Supreme Court, and wrote the Populist Party platform. In between, Trumbull helped found the Republican Party, and served three U.S. Senate terms, chairing the judiciary committee. One of the greatest leaders of America’s “Second Founding,” Trumbull wrote the Thirteenth Amendment, the Civil Rights Act, and the Freedmen’s Bureau Act. The latter two were expressly intended to protect the Second Amendment rights of former slaves. Another Trumbull law, the Second Confiscation Act, was the first federal statute to providing for arming freedmen. After leaving the Senate, Trumbull continued his fight for arms rights for workingmen, bringing Presser v. Illinois to the U.S. Supreme Court in 1886, and Dunne v. Illinois to the Illinois Supreme Court in 1879. His 1894 Populist Party platform was a fiery affirmation of Second Amendment principles. In the decades following the end of President James Madison’s Administration in 1817, no American lawyer or legislator did as much as Trumbull in defense of Second Amendment. Yet Lyman Trumbull had little personal interest in firearms, and never considered the Second Amendment to be one of his major issues. So how did Lyman Trumbull become the leading Second Amendment lawyer of the time? His lifelong cause was “the poor who toil for a living in this world.” When Trumbull examined America in the nineteenth century, he saw that the rights of the toilers could always be trampled, unless they had the right to arms, individually and collectively.
The story of Lyman Trumbull’s career begins in the Age of Jackson and ends with Trumbull’s protégé, William Jennings Bryan, winning the Democratic presidential nomination in 1896. It is a story of a man who changed political parties five times, while holding fast to his fundamental principle of free labor. Even today, “The Grand Old Man of America” continues to shape our understanding of constitutional liberty
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Lyman Trumbull: Author of the Thirteenth Amendment, Author of the Civil Rights Act, and the First Second Amendment Lawyer
No full textThis Article provides the first legal biography of lawyer and Senator Lyman Trumbull, one of the most important lawyers and politicians of the nineteenth century. Early in his career, as the leading anti-slavery lawyer in Illinois in the 1830s, he won the cases constricting and then abolishing slavery in that state; six decades later, Trumbull represented imprisoned labor leader Eugene Debs in the Supreme Court, and wrote the Populist Party platform. In between, Trumbull helped found the Republican Party, and served three U.S. Senate terms, chairing the judiciary committee. One of the greatest leaders of America’s “Second Founding,” Trumbull wrote the Thirteenth Amendment, the Civil Rights Act, and the Freedmen’s Bureau Act. The latter two were expressly intended to protect the Second Amendment rights of former slaves. Another Trumbull law, the Second Confiscation Act, was the first federal statute to providing for arming freedmen. After leaving the Senate, Trumbull continued his fight for arms rights for workingmen, bringing Presser v. Illinois to the U.S. Supreme Court in 1886, and Dunne v. Illinois to the Illinois Supreme Court in 1879. His 1894 Populist Party platform was a fiery affirmation of Second Amendment principles. In the decades following the end of President James Madison’s Administration in 1817, no American lawyer or legislator did as much as Trumbull in defense of Second Amendment. Yet Lyman Trumbull had little personal interest in firearms, and never considered the Second Amendment to be one of his major issues. So how did Lyman Trumbull become the leading Second Amendment lawyer of the time? His lifelong cause was “the poor who toil for a living in this world.” When Trumbull examined America in the nineteenth century, he saw that the rights of the toilers could always be trampled, unless they had the right to arms, individually and collectively.
The story of Lyman Trumbull’s career begins in the Age of Jackson and ends with Trumbull’s protégé, William Jennings Bryan, winning the Democratic presidential nomination in 1896. It is a story of a man who changed political parties five times, while holding fast to his fundamental principle of free labor. Even today, “The Grand Old Man of America” continues to shape our understanding of constitutional liberty
Discovery of a single faint AGN in a large sample of z > 5 Lyman break galaxies
No full textAs part of a large spectroscopic survey of z > 5 Lyman break galaxies (LBGs), we have identified a single source which is clearly hosting an active galactic nucleus (AGN). Out of a sample of more than 50 spectroscopically confirmed R-band dropout galaxies at z∼ 5 and above, only J104048.6−115550.2 at z= 5.44 shows evidence for a high ionization potential emission line indicating the presence of a hard ionizing continuum from an AGN. Like most objects in our sample the rest-frame-UV spectrum shows the UV continuum breaking across a Lyα line. Uniquely within this sample of LBGs, emission from N V is also detected, a clear signature of AGN photoionization. The object is spatially resolved in Hubble Space Telescope (HST) imaging. This, and the comparatively high Lyα/N V flux ratio indicates that the majority of the Lyα (and the UV continuum longward of it) originates from stellar photoionization, a product of the ongoing starburst in the LBG. Even without the AGN emission, this object would have been photometrically selected and spectroscopically confirmed as a Lyman break in our survey. The measured optical flux (IAB= 26.1) is therefore an upper limit to that from the AGN and is of order 100 times fainter than the majority of known quasars at these redshifts. The detection of a single object in our survey volume is consistent with the best current models of high redshift AGN luminosity function, providing a substantial fraction of such AGN is found within luminous starbursting galaxies. We discuss the cosmological implications of this discovery
Studies in the Bromeliaceae, XII
No full textIn the preliminary part the author publishes the news: Hohenbergia guatenialensis L. B. Smith, Piteairnia heterophylla (Lindl.) Beer forma albiflora Standley et L. B. Smith, P. nutckheimii Donn. Smith var. macrolepis L. B. Smith, Tillandsia ionantha Planch. var. scaposa L. B. Smith, T. penlandii L. B. Smith and their var. pedunculata L. B. Smith, T. polita L. B. Smith, Vriesia lancifolia (Baker) L. B. Smith, V. pectinata L. B. Smith and V. racinae L. B. Smith.
In the second part the author continues his synopses of the Tribe Tillandsieae (now subfamily Tillandsioideae according to Harms). In this part he studies the species with simple inflorescences and flowers that all go to one side, with a total of 26 of the genus Vriesia. The first part of the synopses has been published in numbers LXXXVI and CVI of ?Contributions from the Gray Herbariam of Harvard University?
A CENTURY AFTER LYMAN
No full textT. Lyman, Astroph. J. E. Reinhold, W. Hogervorst, and W. Ubachs, Phys. Rev. Lett. A. de Lange E. Reinhold, and W. Ubachs, Phys. Rev. Lett. A. de Lange, E. Reinhold, and W. Ubachs, Int. Rev. Phys. Chem. E. Reinhold and W. Ubachs, Phys. Rev. Lett. W. Ubachs and E. Reinhold, Phys. Rev. Lett. accepted (2004).Author Institution: Laser Centre, Department of Physics and Astronomy, Vrije UniversiteitExactly a century ago Lyman reported on the first spectroscopic identification of the hydrogen . Over the years past many spectroscopists have searched for spectral signatures of the smallest neutral molecule, which has become the fundamental test system for quantum chemical ab initio calculations. Experimental work on and its isotopomers is more difficult than in other systems because electronic absorption occurs only at wavelengths ; the vibrational spectrum is extremely weak due to the inversion symmetry; due to the low nuclear mass spectra are not organized in bands as bands but rather occur as randomly organized lines; isotopic substitution is not helpful because it gives rise to another set of randomly appearing lines. In the past decade we have employed laser based techniques to unravel new spectral structures in hydrogen and measure at high resolution. Specific breakthroughs are the use of a narrowband tunable laser in the extreme ultraviolet domain and of multiple-resonance techniques involving XUV photons. These studies have led to: the observation of high-lying double-well structures of gerade ; the observation of a double-well structures of ungerade ; the observation of strong u-g symmetry ; the observation of heavy Rydberg states of the . From a comparison of extremely accurate calibration of Lyman and Werner transitions, and by comparing the laboratory results with absorptions in spectra of quasars that have occured 12 Billion years ago, a rather strict constraint can be set om a possible variation of the proton-to-electron mass
The Lyman-α forest catalogue from the Dark Energy Spectroscopic Instrument Early Data Release
No full textArtículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMWe present and validate the catalogue of Lyman-α forest fluctuations for 3D analyses using the Early Data Release (EDR) from the Dark Energy Spectroscopic Instrument (DESI) survey. We used 88 511 quasars collected from DESI Survey Validation (SV) data and the first two months of the main survey (M2). We present several improvements to the method used to extract the Lyman-α absorption fluctuations performed in previous analyses from the Sloan Digital Sky Survey (SDSS). In particular, we modify the weighting scheme and show that it can improve the precision of the correlation function measurement by more than 20 per cent. This catalogue can be downloaded from https://data.desi.lbl.gov/public/edr/vac/edr/lya/fuji/v0.3, and it will be used in the near future for the first DESI measurements of the 3D correlations in the Lyman-α forestThis material is based upon work supported by the US Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DE-AC02-05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the US National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technologies Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Science and Technology of Mexico (CONACYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: https://www.desi.lbl.gov/collaborating-institutions . Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U.S. National Science Foundation, the U.S. Department of Energy, or any of the listed funding agencies
Proceedings Transborder Library Forum 2007 : bridging the digital divide : crossing all borders = Memorias Foro Transfronterizo de Bibliotecas 2007 : cerrando la brecha digital : cruzando todas las fronteras
No full textIt is with great pleasure that we present this edition of the Proceedings of the Transborder Library Forum (Foro). The 2007 Transborder Library Forum was held at Arizona State University in Tempe, Arizona in February, 2007. We are pleased that there will be both a print edition and an online edition. Editing has been kept to a minimum to preserve the intent of the author in the language the paper was presented. The theme for the 2007 Foro was Bridging the Digital Divide. Topics ranged from international copyright issues to getting information to students in widely dispersed communities with little or no infrastructure except the Internet. While most attendees and speakers were from the USA and Mexico, we also had some from Uganda, Kenya, Hungary, and the West Indies
Author Correction: Nearly all the sky is covered by Lyman-α emission around high-redshift galaxies
No full textInternational audienceChange history: In this Letter, author M. Akhlaghi should be associated with affiliation (2) rather than (3). This error has been corrected online
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