6,642 research outputs found

    Fossils: Prehistoric Animals in Hoosier Rocks

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    Indiana Geological Survey Circular 7Fossils are abundant in Indiana’s rocks, and Hoosiers commonly seek information about these relics of ancient life from the Indiana Geological Survey. The primary purpose of this circular is to provide information on the principles of paleontology and the major kinds of fossils found in Indiana. Many of the fossils illustrated in this Circular are found in Indiana bedrock; some have been included to provide more information on the characteristics of the major groups of fossils. Another purpose is to stimulate interest in fossil collecting, a healthful pastime that may lead younger readers to a rewarding career. This account of ancient life concludes with a list of books that deal largely with fossils and earth history. Fossilized remains of primitive vertebrates are not discussed as they are rare in Hoosier rocks. Prehistoric plant life in Indiana is not considered, as Canright (1959) has recently described plants that grew in Indiana in the geologic past.Indiana Department of Conservatio

    Recent activities within the Aeroservoelasticity Branch at the NASA Langley Research Center

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    The objective of research in aeroservoelasticity at the NASA Langley Research Center is to enhance the modeling, analysis, and multidisciplinary design methodologies for obtaining multifunction digital control systems for application to flexible flight vehicles. Recent accomplishments are discussed, and a status report on current activities within the Aeroservoelasticity Branch is presented. In the area of modeling, improvements to the Minimum-State Method of approximating unsteady aerodynamics are shown to provide precise, low-order aeroservoelastic models for design and simulation activities. Analytical methods based on Matched Filter Theory and Random Process Theory to provide efficient and direct predictions of the critical gust profile and the time-correlated gust loads for linear structural design considerations are also discussed. Two research projects leading towards improved design methodology are summarized. The first program is developing an integrated structure/control design capability based on hierarchical problem decomposition, multilevel optimization and analytical sensitivities. The second program provides procedures for obtaining low-order, robust digital control laws for aeroelastic applications. In terms of methodology validation and application the current activities associated with the Active Flexible Wing project are reviewed

    Fenestrate Bryozoans from the Glen Dean Limestone (Middle Chester) of Southern Indiana

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    Indiana Geological Survey Bulletin 19Fenestrate bryozoans are particularly abundant in shale and argillaceous limestone beds in the upper part of the Glen Dean Limestone (middle Chester) of late Mississippian age In south-central Indiana. Several hundred specimens were obtained from two excellent collecting localities in Perry County and from one exposure in northwestern Crawford County. The collected specimens are assigned to the genera Fenestella Lonsdale, Lyroporella Simpson, and Polypora McCoy of the Family Fenestellidae King and to the genus Septopora Prout, a member of the Family Acanthocladiidae Zittel. Fenesteila is the most abundantly represented genus in our collections and includes five species, Fenestella burlingtonensis Ulrich, F. cestriensis Ulrich, F. exigua Ulrich, F. matheri Condra & Elias, and F. tenax Ulrich. Polypora is the next most abundant genus and is represented in the fauna by three species, Polypora corticosa Ulrich, P. multispinosa McFarlan, and P. nodolinearis McFarlan. Frequency-distribution diagrams showing number of branches and fenestrules in a 10-millimeter distance and number of zooecia and nodes in a 5millimeter distance have been prepared for each described species except Septopora cestriensis Prout; only one specimen of this species displays the obverse side of the frond. Such diagrams permit clearer differentiation of closely allied species in which ranges of one or more structural characters may overlap, and these diagrams present a more accurate understanding of each species. The Glen Dean fenestrate bryozoan fauna, exclusive of Archimedes Owen, which is not treated in this study, includes 11 species. Although fenestrate bryozoan faunas have been described in considerable detail from Glen Dean beds in Illinois and Kentucky, these faunal elements of the Glen Dean of Indiana hitherto have not received significant attention.Indiana Department of Conservatio

    An Analysis of the Myths That Bolster Efforts to Rewrite RICO and the Various Proposals for Reform: Mother of God-Is This the End of RICO?

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    In 1970 Congress enacted the Organized Crime Control Act, Title IX of which is known as the Racketeer Influenced and Corrupt Organizations Act, or RICO. Congress enacted the 1970 Act to strengthen[]the legal tools in the evidence-gathering process, [to] establish[] new penal prohibitions, and [to] provid[e] enhanced sanctions and new remedies .,, RICO covers violence, the provision of illegal goods and services, corruption in labor or management relations, corruption in government, and commercial fraud. Congress found in 1970 that the sanctions and remedies available to combat these crimes under the law then in force were unnecessarily limited in scope and impact. Consequently, it provided a wide range of new criminal and civil sanctions to control these offenses, including imprisonment, forfeiture, injunctions,and treble damage relief for persons injured in their business or property by violations of the statute.\u27 At the time, the President, the President\u27s Commission on Crime and Administration of Justice, and the American Bar Association called for the private civil remedies of RICO. In response, the Senate passed the Bill seventy-three to one.The House passed an amended Bill three hundred forty-one to twenty-six. The Senate passed the amended House Bill without objection,and the President signed the legislation on October 14, 1970.

    Ordovician Stratigraphy and the Physiography of Part of Southeastern Indiana

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    Indiana Geological Survey Guidebook 6This field trip guidebook discusses the stratigraphy and paleontology of the Ordovician rocks exposed in southeastern Indiana. Ordovician rocks in southern Indiana are exposed in a region that is stimulating to physiographers and Pleistocene geologist. Consequently, in addition to the stratigraphy and paleontology of the Ordovician bedrock, this conference directs attention to prominent physiographic features in this area, many of which owe their origin to Pleistocene glaciation, and to concepts regarding their development. Ordovician rocks in southern Indiana are paleontologically attractive because they are so richly fossiliferous. Well-preserved specimens maybe readily collected in weathered exposures and in the soft shales of the Cincinnatian (Upper Ordovician) series. Southeastern Indiana has not yielded mineral commodities as plentifully as other parts of the state. Nevertheless, two stops and several observation points along the route of the caravan draw attention to some of the industrial minerals found in this area. This conference is designed to present as coherent a view as time will permit of the geology of southeastern Indiana. The stops have been carefully selected to show features of stratigraphic, paleontologic, physiographic, or economic interest. Informal discussion among participants will contribute greatly to the success of the conference.Department of Geology, Indiana University; Indiana Geological Survey; Indiana Department of Conservatio

    Ordovician Stratigraphy, and the Physiography of Part of Southeastern Indiana

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    Within recent years field conferences sponsored by the Geological Survey, Indiana Department of Conservation, and the Department of Geology, Indiana University, have reviewed outstanding exposures and of parts of the Silurian, Devonian, Mississippian, and Pennsylvanian systems in southern Indiana. This conference is concerned, in part, with the stratigraphy and paleontology of the Ordovician rocks exposed in southeastern Indiana

    Spin orbit alignment for KELT-7b and HAT-P-56b via Doppler tomography with TRES

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    We present Doppler tomographic analyses for the spectroscopic transits of KELT-7b and HAT-P-56b, two hot-Jupiters orbiting rapidly rotating F-dwarf host stars. These include analyses of archival TRES observations for KELT-7b, and a new TRES transit observation of HAT-P-56b. We report spin-orbit aligned geometries for KELT-7b (2.7 +/- 0.6 deg) and HAT-P-56b (8 +/- 2 deg). The host stars KELT-7 and HAT-P-56 are among some of the most rapidly rotating planet-hosting stars known. We examine the tidal re-alignment model for the evolution of the spin-orbit angle in the context of the spin rates of these stars. We find no evidence that the rotation rates of KELT-7 and HAT-P-56 have been modified by star-planet tidal interactions, suggesting that the spin-orbit angle of systems around these hot stars may represent their primordial configuration. In fact, KELT-7 and HAT-P-56 are two of three systems in super-synchronous, spin-orbit aligned states, where the rotation periods of the host stars are faster than the orbital periods of the planets.Comment: 9 pages, accepted for publication in MNRA

    Evaluation of Various Culture Media for Detection of Rapidly-Growing Mycobacteria from Patients with Cystic Fibrosis.

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    Isolation of nontuberculous mycobacteria (NTM) from the sputum of patients with cystic fibrosis (CF) is challenging due to overgrowth by rapidly growing species that colonize the lungs of patients with CF. Extended incubation on Burkholderia cepacia selective agar (BCSA) has been recommended as an expedient culture method for the isolation of rapidly growing NTM in this setting. The aim of this study was to assess five selective media designed for the isolation of Burkholderia cepacia complex, along with two media designed for the isolation of mycobacteria (rapidly growing mycobacteria [RGM] medium and Middlebrook 7H11 agar), for their abilities to isolate NTM. All seven media were challenged with 147 isolates of rapidly growing mycobacteria and 185 isolates belonging to other species. RGM medium was then compared with the most selective brand of BCSA for the isolation of NTM from 224 sputum samples from patients with CF. Different agars designed for the isolation of B. cepacia complex varied considerably in their inhibition of other bacteria and fungi. RGM medium supported the growth of all isolates of mycobacteria and was more selective than any other medium. NTM were recovered from 17 of 224 sputum samples using RGM medium, compared with only 7 samples using the most selective brand of BCSA (P = 0.023). RGM medium offers a superior option, compared to other selective agars, for the isolation of rapidly growing mycobacteria from the sputum of patients with CF. Furthermore, the convenience of using RGM medium enables routine screening for rapidly growing NTM in all submitted sputum samples from patients with CF
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