623 research outputs found
On the efficacy and safety of vaccination with live tachyzoites of Neospora caninum for prevention of Neospora-associated fetal loss in cattle
No full textInfection of cattle with Neospora caninum may result in abortion or the birth of a congenitally infected calf. Vaccination with live N. caninum protects against experimental infection of cattle and mice, and the naturally attenuated Nc-Nowra strain of N. caninum is of particular interest as a potential vaccine candidate. Vaccination of heifers prior to breeding with live Nc-Nowra tachyzoites by either the subcutaneous or the intravenous route reduced the rate of abortion and the presence of the parasite in calves as determined by PCR and serology after infection of cows with a virulent isolate. Protected fractions were 55.6% to 85.2% depending on the route of vaccination and growth conditions of the vaccine strain, with cryopreserved Nc-Nowra tachyzoites being less effective, with a 25.9% protected fraction. Vaccination appeared to reduce the rate of pregnancy after artificial insemination in some groups compared to nonvaccinated, nonchallenged controls. One animal that was vaccinated but not challenged experienced an abortion, but Nc-Nowra could not be detected in any of the cows in this group or their progeny. This study confirms that live vaccination can be an effective method of preventing neosporosis in cattle and yet highlights the technical hurdle of preservation of live parasites that must be overcome for a vaccine to be commercially successful.Fred H. Weber, James A. Jackson, Brian Sobecki, Les Choromanski, Mary Olsen, Todd Meinert, Rodney Frank, Michael P. Reichel, John T. Elli
[Boy Scouts Preparing for Parade]
No full textPhotograph of a group of boy scouts; they are posing in six rows on a flight of stairs. Most of the boys are wearing uniforms, and some are wearing hats. Text below the photograph says "Scouts Preparing for a Parade - 1928," "P.F.: Boy Scouts," and identifies some of the boys as "Joe Jackson, Billy Hause, Kerns, Hal Baird, Robert Pool, Carroll Wolford, Lester Carr, Darrell Beauchamp, Vernon, Bodin, Denbo, Bill Gray, Rodney Quebodeaux, J. T. Urwin, J.D. Thompson, Vernon Isaac, and Quincy Tuma
Detroit : the past, present and future of the city
No full textA Michigan State University faculty panel participates in a discussion entitled, "Detroit: The Past, Present and Future of the City." Panelists explore Detroit's music scene, youth culture and education, the auto industry and jobs. Dr. Cynthia Jackson-Elmoore, Dean of the MSU Honors College convenes the session. Professor John P. Beck from the School of Human Resources and Labor Relations moderates questions from the audience. Part of the series "Sharper Focus/Wider Lens" sponsored by: MSU Honors College; College of Agriculture and Natural Resources; College of Music; College of Social Science; James Madison College; Lyman Briggs College; Residential College in the Arts and Humanities; Department of Geography; School of Planning, Design and Construction; and the Jazz Studies Program
Single- and Multi-carrier Quadrature Amplitude Modulation: Principles and Applications for Personal Communications, WATM and Broadcasting: 2nd
No full textSingle- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W. Webb Motorola, Arlington Heights, USA formerly at Multiple Access Communications Ltd, Southampton, UK T. Keller Ubinetics, Cambridge Technology Centre, Melbourn, UK formerly at Department of Electronics and Computer Science, University of Southampton, UK Motivated by the rapid evolution of wireless communication systems, this expanded second edition provides an overview of most major single- and multi-carrier Quadrature Amplitude Modulation (QAM) techniques commencing with simple QAM schemes for the uninitiated through to complex, rapidly-evolving areas, such as arrangements for wide-band mobile channels. Targeted at the more advanced reader, the multi-carrier modulation based second half of the book presents a research-orientated outlook using a variety of novel QAM-based arrangements. * Features six new chapters dealing with the complexities of multi-carrier modulation which has found applications ranging from Wireless Local Area Networks (WLAN) to Digital Video Broadcasting (DVB) * Provides a rudimentary introduction for readers requiring a background in the field of modulation and radio wave propagation * Discusses classic QAM transmission issues relevant to Gaussian channels * Examines QAM-based transmissions over mobile radio channels * Incorporates QAM-related orthogonal techniques, considers the spectral efficiency of QAM in cellular frequency re-use structures and presents a QAM-based speech communications system design study * Introduces Orthogonal Frequency Division Multiplexing (OFDM) over both Gaussian and wideband fading channels By providing an all-encompassing self-contained treatment of single- and multi- carrier QAM based communications, a wide range of readers including senior undergraduate and postgraduate students, practising engineers and researchers alike will all find the coverage of this book attractive
Graduate recital, percussion. Dietrich, R., 2000
No full textRecorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, April 2, 2000, 8:00 p.m., the 461st concert of the School of Music's 1999-2000 season.Richard Dietrich, percussion ; various instrumentalists.In partial fulfillment of the requirements of the Master of Music degree in performance, Western Michigan University, 2000.Information from performance program.Hard times / Len "Boogsie" Sharpe ; trans. Shelly Irvine (Richard Dietrich, drumset ; Greg Secor, Chad Wanstreet, lead tenor ; Scott Maranda, double tenor ; Ryan Hansen, double seconds ; Chad Waterman, cello ; Mark Ziegler, bass ; Sarah Wagar, auxiliary percussion) -- Brownian motion / Dennis DeSantis (Richard Dietrich, marimba and vibraphone ; Laura Sommer, horn ; Adam Liebert, violin) -- Bags' groove / Milt Jackson ; arranged by Arthur Lipner (Richard Dietrich, vibraphone ; Mark Ziegler, acoustic bass ; Kevin Garcia, newspaper) -- Timpani concerto no. 1, The olympian / James Oliverio (Richard Dietrich, timpani) -- Prelude and fugue in B-flat major / Johann Sebastian Bach (Richard Dietrich, marimba) -- Triplets / George Hamilton Green ; arranged by Bob Becker (Richard Dietrich, xylophone ; Andrew Boesenecker, marimba 1 ; Landon Ewers, marimba 2 ; Sarah Wagar, marimba 3 ; Mark Lopez, bass marimba) -- Concerto for marimba and orchestra / Richard Rodney Bennett (Richard Dietrich, marimba ; David Bassin, piano) -- Father's day / Phil Hawkins (GVSU Steel Drum Ensemble: Richard Dietrich, drumset ; Greg Secor, Chad Wanstreet, lead tenor ; Scott Maranda, double tenor ; Ryana Hansen, double seconds ; Chad Waterman, cello ; Mark Ziegler, bass ; Sarah Wagar, auxiliary percussion
LONG-RANGE ORDERED POROUS CARBONS PRODUCED FROM C-60
No full textCarbon structures with covalent bonds connecting C60 molecules have been reported1–3, but their production methods typically result in very small amounts of sample, which restrict the detailed characterization and exploration necessary for potential applications. We report the gram-scale preparation of a new type of carbon, long-range ordered porous carbon (LOPC), from C60 powder catalysed by α-Li3N at ambient pressure. LOPC consists of connected broken C60 cages that maintain long-range periodicity, and has been characterized by X-ray diffraction, Raman spectroscopy, magic-angle spinning solid-state nuclear magnetic resonance spectroscopy, aberration-corrected transmission electron microscopy and neutron scattering. Numerical simulations based on a neural network show that LOPC is a metastable structure produced during the transformation from fullerene-type to graphene-type carbons. At a lower temperature, shorter annealing time or by using less α-Li3N, a well-known polymerized C60 crystal forms owing to the electron transfer from α-Li3N to C60. The carbon K-edge near-edge X-ray absorption fine structure shows a higher degree of delocalization of electrons in LOPC than in C60(s). The electrical conductivity is 1.17 × 10−2 S cm−1 at room temperature, and conduction at T < 30 K appears to result from a combination of metallic-like transport over short distances punctuated by carrier hopping. The preparation of LOPC enables the discovery of other crystalline carbons starting from C60(s). © 2023, The Author(s), under exclusive licence to Springer Nature Limited.11Nsciescopu
The Auckland heart study: a case-control study of coronary heart disease
No full textCoronary heart disease is the leading cause of death and a major cause
of morbidity in New Zealand. Although the mortality rates are now
declining, they remain high by international standards and there is
considerable scope for the prevention of coronary heart disease. There
is a paucity of New Zealand data on the aetiology of this disease.
The Auckland Heart Study is a case-control study of coronary heart
disease which was designed to determine whether a range of variables
including; smoking, passive smoking, hypertension, exercise, alcohol,
serum lipids, and dietary and psychosocial factors, are related to
coronary heart disease in New Zealand. Other factors examined included
respiratory infection, sex hormones and serum vitamins. The study also
documented the prevalence of the major risk factors in the Auckland
adult population so as to examine trends in risk factors since the 1982
Auckland Risk Factor Study.
The study was conducted between 1 March 1986 and 3 May 1988. There were
two case groups: non fatal myocardial infarction cases and coronary
death cases; and two control groups: myocardial infarction controls and
coronary death controls. Participants were aged 25-64 years
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