364 research outputs found
Solid quark stars?
No full textIt is conjectured that cold quark matter with very high baryon density could be in a solid state, and strange stars with low temperatures should thus be solid stars. The speculation could be close to the truth if no peculiar polarization of thermal X-ray emission (as in, e.g., RX J1856) or no gravitational wave in postglitch phases are detected in future advanced facilities or if spin frequencies beyond the critical ones limited by r-mode instability are discovered. The shear modulus of solid quark matter could be similar to10(32) ergs cm(-3) if the kilohertz quasi-periodic oscillations observed are relevant to the eigenvalues of the center star oscillations.Astronomy & AstrophysicsSCI(E)0ARTICLE1L59-L6259
The Rx Hex
Full text linkAt CITI, we run dataless AFS clients over dialup IP networks. Improving Rx performance is critical to that task. In this paper, we report on our progress in adapting Rx to networks characterized by low bandwidth, high delay, or variable round-trip time. Our focus is on adding facilities for congestion avoidance and control, and on compressing Rx headers. Although our work is ongoing, we have overcome several hurdles, and are now getting impressive data transfer rates over ordinary dialup lines.http://deepblue.lib.umich.edu/bitstream/2027.42/107951/1/citi-tr-93-8.pd
Astrophysical quark matter
No full textThe quark matter may have great implications in astrophysical studies, which could appear in the early Universe, in compact stars, and/or as cosmic rays. After a general review of astrophysical quark matter, the density-dominated quark matter is focused.Astronomy & AstrophysicsSCI(E)CPCI-S(ISTP)
Ullrich Kockel (ed.) (2002): Review of Culture and Economy. Ashgate, Hampshire, UK Burlington, USA, 245+X pp, £45.00
No full textEconomicsSSCI0BOOK REVIEW3350-3521
To probe into pulsar's interior through gravitational waves
No full textThe gravitational radiation from compact pulsar-like stars depends on the state of dense matter at supranuclear densities, i.e., the nature of pulsar (e.g., either normal neutron stars or quark stars). The solid quark star model is focused for the nature of pulsar-like compact objects. Possible gravitational emission of quark stars (either fluid or solid) during the birth and later lifetime is discussed. Several observational features to distinguish various models for pulsar-like stars are proposed. It is suggested that the gravitational wave behaviors should be mass-dependent. Based on the data from the second LIGO science run, the upper limits of R-.theta(1/5) and thus M-.theta(3/5) (M: mass, R: radius, and theta: wobble angle) are provided for those targets of millisecond pulsars. (c) 2006 Elsevier B.V. All rights reserved.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)EI13ARTICLE3212-2192
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The Rx for Open Access
No full textPanel presentation for the 2014 American Association of Colleges of Pharmacy (AACP) Annual Conference. This presentation discusses open access issues, institutional repositories, licenses, and author rights
Bare strange quark stars: Formation and emission
No full textRecent achievements of bare strange stars are briefly reviewed. A nascent protostrange star should he bare because of strong mass ejection and high temperature after the supernova detonation flame, And a crust can also hardly form except, for a super-Eddington accretion. The magnetosphere of a bare strange star is composed mainly of CL pair plasma, where both inner and enter vacuum gaps work for radio as well as high energy nonthermal emission. A featureless thermal spectrum is expected since no ion is above the quark surface, whilst electron cyclotron lines could appear in some bare strange stars with suitable magnetic fields. Various astrophysical implications of bare strange stars are discussed.Astronomy & AstrophysicsCPCI-S(ISTP)
Ultra high energy cosmic rays: Strangelets?
No full textThe conjecture that ultra-high-energy cosmic rays (UHECRs) are actually strangelets is discussed. Besides the reason that strangelets can do as cosmic rays beyond the Greisen-Zatsepin-Kuzmin-cutoff, another argument to support the conjecture is addressed by the study of formation of TeV-scale microscopic black holes when UHECRs bombarding bare strange stars. It is proposed that the exotic quark surface of a bare strange star could be an effective astro-laboratory in the investigations of the extra dimensions and of the detection of ultra-high-energy neutrino fluxes. The flux of neutrinos (and other point-like particles) with energy larger than 2.3 x 10(20) eV could be expected to be smaller than 10(-26), cm(-2) s(-1) if there are two extra spatial dimensions.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)14ARTICLE6806-8092
Phase Distribution Efficiency of cm-Scale Ultrasonically Powered Receivers
No full textIn the domain of ultrasonically powered biomedical implants, there is an increasing interest in cm-scale ultrasonic receivers (RX). However, when a single-element transducer is used as the RX transducer, an uneven phase distribution across the RX area can significantly reduce the harvestable power. In this paper, we investigate the impact of lateral and angular misalignment on the acoustic field phase distribution across the RX surface. We show that, for a single-element RX transducer, lateral misalignment has minimal effect on the harvestable power, whereas even small angular misalignments can cause a considerable reduction, especially for larger RX sizes. We present a potential solution that consists of subdividing a large RX transducer (e.g. 20 × 20mm2) into smaller elements, which significantly improves power transfer efficiency by taking advantage of the smaller phase variation across the surface of each element. The trade-offs between achieving a minimum acceptable power transfer efficiency and managing the increased complexity in packaging and matching circuitry are also discussed.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic Components, Technology and MaterialsBio-Electronic
Generation Rx in Action
Full text linkThe mission of Generation Rx is to educate people of all ages about the potential dangers of misusing prescription medications. In doing so, we strive to enhance medication safety among our youth, college students, other adults in our communities, and seniors. Prescription medications can help us live longer and healthier lives, but any medication has the potential to do harm – especially when misused. Since 2009, the College of Pharmacy at The Ohio State University and the Cardinal Health Foundation have partnered to provide open-source educational materials that anyone can use to help prevent the misuse of prescription drugs. These ready-to-use resources are designed to provide everything you need to make a presentation or offer a program in your community, school or college. Our core messages are quite simple: 1) Only use prescription medications as directed by a health professional. 2) Never share your prescription medications with others or use someone else's medications. 3) Always store your medications securely to prevent others from taking them, and properly dispose of medications that you no longer need. 4) Be a good example to those around you by modeling these safe medication-taking practices and discussing the dangers of misusing prescription drugs with your family, friends, colleagues, students, or patients.AUTHOR AFFILIATION: Misty Harmon, The Ohio State University Extension Educator, Family and Consumer Sciences, Perry County, [email protected] (Corresponding Author); Treva Williams, The Ohio State University Extension Educator and County Director, Family and Consumer Sciences, Lawrence and Scioto Counties.The Generation Rx materials will be briefly explained. Attendees will be encouraged to seek out partnerships in their communities to share the Generation Rx information with a broader range of people. Examples of how we have used the Generation Rx materials in our communities will be highlighted. We will provide information on how to become a trainer or have someone present about Generation Rx at your event
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