3,473 research outputs found

    Myopsocus arthuri Nel, Waller, Poinar & Jr, 2006, sp. n.

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    Myopsocus arthuri sp. n. (Figs 1–3) Material: holotype specimen Ps- 2-32, in the same piece of amber as a Coleoptera: Histeridae; in the Poinar amber collection maintained at Oregon State University, Corvallis, OR 97331 USA. The specimen originated from La Toca mine in the northern mountain range of the Dominican Republic. Etymology: after Arthur Waller, grandson of the second author (A.W.). Description: head 0.62 mm long, about 0.8 mm wide; labrum without ridges from base to margin; lacinia with small outer tooth and broad inner cusp divided into several smaller teeth; maxillary palp with P 4 0.16 mm long, P 3 0.06 mm long, P 2 0.10 mm long, P 2 with a strong apical spur; three ocelli present, arranged in triangle, lateral ocelli much larger than median ocellus, lateral ocellus 0.2 mm, median ocellus 0.1 mm; antenna with 12 flagellomeres; scape 0.16 mm long, pedicel 0.08 mm long; first flagellar segment f 1 0.2 mm long, second f 2 0.2 mm long; several long setae on frons; compound eyes large, reaching hind margin of head capsule; median epicranial suture not visible. Fore wing glabrous, 2.6 mm long, 1.0 mm wide; colour pattern with mottling of irregular confluent dark marks, the margins with alternating brown and colourless banding; wing margin without incurving between branches of veins; pterostigma dark, thick, 0.17 mm wide; Rs and M fused for a short distance, 0.6 mm; areola postica 0.46 mm long, 0.09 mm wide, not joined to M by a cross-vein. Hind wing hyaline, 2.0 mm long, 0.7 mm wide; Rs and M fused for 0.12 mm. Fore femora 0.52 mm long, tibia 0.54 mm long, tarsi 0.16 mm long; mid femora 0.50 mm long, tibia 0.50 mm long, tarsi 0.20 mm long; hind femora 0.50 mm long, tibia 1.04 mm long, tarsi 0.44 mm long, t 1 0 36 mm long, t 2 0.04 mm long, t 3 0.04 mm long; all tarsi three-segmented; claw with preapical tooth; pulvillus not visible. Abdomen 0.70 mm long, deformed; male genitalia with phallosome rounded, without large bifid posterior extensions; epiproct with a pair of sclerotized prongs.Published as part of Nel, A., Waller, A., Poinar, G. O. & Jr, 2006, The first fossil Myopsocidae (Psocoptera) in Dominican amber, pp. 63-68 in Zootaxa 1349 on pages 64-66, DOI: 10.5281/zenodo.17448

    Author Index- Social and Technical Issues in Testing: Implications for Test Construction and Usage

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    Author Index pp. 173-178 A-Z (6 pages) Numbers in italics indicate pages with complete bibliographic information. A Acker, S. R., 65 , 86 Ackoff, R. L. , 21, 35 Adair, F. L., 122, 125 Adkins, D. c. , 148 , 153 Aisner, D. J ., 32, 35 Alderman, D. L. , 148 , 153 Anastas i, A., 9 1, 99, 107, 129 , 130, 132, 134, 139, 164 , 168 , 169 Anderson, G. E. , Jr. , 2 1, 35 Anderson , 1. R. , 46 , 57 Anderson, R. C. , 142, 153, 157, 169 Arnoff, S. L., 2 1, 35 Ausubel, D. P., 165, 169 ... Z Zedeck, S., 72, 86Ziskin , J. , 96, 10

    Author Index- Social and Technical Issues in Testing: Implications for Test Construction and Usage

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    Author Index pp. 173-178 A-Z (6 pages) Numbers in italics indicate pages with complete bibliographic information. A Acker, S. R., 65 , 86 Ackoff, R. L. , 21, 35 Adair, F. L., 122, 125 Adkins, D. c. , 148 , 153 Aisner, D. J ., 32, 35 Alderman, D. L. , 148 , 153 Anastas i, A., 9 1, 99, 107, 129 , 130, 132, 134, 139, 164 , 168 , 169 Anderson, G. E. , Jr. , 2 1, 35 Anderson , 1. R. , 46 , 57 Anderson, R. C. , 142, 153, 157, 169 Arnoff, S. L., 2 1, 35 Ausubel, D. P., 165, 169 ... Z Zedeck, S., 72, 86Ziskin , J. , 96, 10

    Washington Lodge, no. 21, F. & A.M., and some of its members;

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    Mode of access: Internet.On fly leaf: Presented to Prof. Charles G. Rockwood, Jr. with the compliments of the author, R.W. Reid

    Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′

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    First evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)

    First observation of Bs → J/ψf0(980) decays

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    Using data collected with the LHCb detector in proton–proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the system. Using a fit to the π+π− mass spectrum with interfering resonances gives . In the interval ±90 MeV around 980 MeV, corresponding to approximately two full f0 widths we also find , where in both cases the uncertainties are statistical and systematic, respectively

    Changes in smooth muscle contractility of rainbow trout (Oncorhynchus mykiss Walbaum) intestine during acclimation to altered temperature

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    The effects of altered water temperature in vivo on in vitro smooth muscle contractility of rainbow trout intestine were investigated. Temperature has a significant effect on receptor-mediated intestinal smooth muscle contractility in the rainbow trout. The efficacy of 5-HT, carbachol, and transmural stimulation increased with temperatures above 10-degrees-C, with an optimal increase at 15-degrees-C. There was also a modest increase in the potency of 5-HT and carbachol within 2 days of establishing trout at 20-degrees-C. By day 8, most of these changes had either stabilized or were returning to control values, suggesting that acclimation changes in membranes and enzyme activities were taking effect. However, the contractile responses to carbachol and transmural stimulation were still increasing at this time. This may imply that the muscarinic receptors are more resistant to membrane acclimation changes and may take longer to adapt. Because these experiments were controlled for handling stress and seasonal changes that affect contractility, we have been able to demonstrate some early changes in smooth muscle contractility that occur during acclimation to altered temperature.PT: J; CR: ALOIA RC, 1989, BIOCHIM BIOPHYS ACTA, V988, P123 BRINK C, 1981, J PHARMACOL EXP THER, V217, P592 BURKA JF, 1989, CAN J PHYSIOL PHARM, V67, P477 BURKA JF, 1990, CAN J PHYSIOL PHARM, V68, P700 BURKA JF, 1993, FISH PHYSIOL BIOCHEM, V12, P53 BURNSTOCK G, 1959, Q J MICROSC SCI, V100, P199 CARPENTER JR, 1986, J PHARMACOL METHOD, V15, P283 DEAN JM, 1969, COMP BIOCHEM PHYSIOL, V29, P185 GUDERLEY H, 1992, FISH PHYSIOL BIOCHEM, V10, P123 HAZEL JR, 1992, J COMP PHYSIOL B, V162, P593 HOCHACHKA PW, 1984, BIOCH ADAPTATION HOLMGREN S, 1985, NEUROSCIENCE, V14, P683 JENSEN J, 1991, GEN COMP ENDOCR, V83, P388 KITAZAWA T, 1989, BRIT J PHARMACOL, V98, P781 MCCAULEY RW, 1974, T AM FISH SOC, V106, P362 PICKERING AD, 1982, J FISH BIOL, V20, P229; NR: 16; TC: 1; J9: FISH PHYSIOL BIOCHEM; PG: 9; GA: MP851Source type: Electronic(1

    Retelling racialized violence, remaking white innocence: the politics of interlocking oppressions in transgender day of remembrance

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    Transgender Day of Remembrance has become a significant political event among those resisting violence against gender-variant persons. Commemorated in more than 250 locations worldwide, this day honors individuals who were killed due to anti-transgender hatred or prejudice. However, by focusing on transphobia as the definitive cause of violence, this ritual potentially obscures the ways in which hierarchies of race, class, and sexuality constitute such acts. Taking the Transgender Day of Remembrance/Remembering Our Dead project as a case study for considering the politics of memorialization, as well as tracing the narrative history of the Fred F. C. Martinez murder case in Colorado, the author argues that deracialized accounts of violence produce seemingly innocent White witnesses who can consume these spectacles of domination without confronting their own complicity in such acts. The author suggests that remembrance practices require critical rethinking if we are to confront violence in more effective ways. Description from publisher's site: http://caliber.ucpress.net/doi/abs/10.1525/srsp.2008.5.1.2

    ESR OF TRANSITION-METAL DIATOMIC IONS: Cu2+,Ag2+,Au2+Cu^{+}_{2}, Ag^{+}_{2}, Au^{+}_{2}

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    1^{1} L. B. Knight, Jr., Acc. Chem. Res. 19, 313 (1986). 2. C. E. Forbes and H. C. R. Symons, Mol. Phys. 27, 467 (1974), Yu. N. Alenko, R. A. Zhitnikov, V. K. Krasikov, and D. P. Peregud, Fiz, Tverd. Tela. 18. 1552 (1976), J. R. Morton and K. F. Preston, J. Magn, Reson. 68, 121 (1986).Author Institution: Department of Chemistry, University of FloridaThe molicular cations Cu2+,Ag2+Cu^{+}_{2}, Ag^{+}_{2}, and Au2+Au^{+}_{2} were generated in neon matrices at 4 K by simultaneous laser vaporization of the appropriate metal and open-tube neon discharge (16.8 eV) photoionization.1photoionization.^{1} The ESR apectra are all of S=1/2S = 1/2 species exhibiting hyperfine splittings due to the 63Cu(I=3/2)107,109Ag(11/2)^{63}Cu(I = 3/2) {^{107,109}}Ag(1 - 1/2), and 197 Au(I=3/2)Au(I = 3/2) nuclei. Variations in the hyperfine and g tensor components in the series are interesting and will be discussed. Comparison will be made with other, less gas-like, environments2environments^{2}

    Nested chain partitions of Hamiltonian filters

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    Let P be a poset, consisting of all sets X subset of or equal to [n] = {1, 2, ..., n} which contain at least one of a given collection F of 2-subsets of [n], ordered by inclusion. By modifying a construction of Greene and Kleitman, we show that if F is hamiltonian, that is, contains {1, 2}, {2, 3}, ..., (n - 1, n) and {1, n}, then P is a nested chain order. We examine the Sperner-type properties of such posers and provide further support for a conjecture of Lih. (C) 1998 Academic Press, Inc.PT: J; CR: BONDY JA, 1976, GRAPH THEORY APPL DEBRUIJN NG, 1951, NIEUW ARCH WISK, V23, P191 GREENE C, 1976, J COMB THEORY A, V20, P80 GRIGGS JR, 1980, J COMB THEORY A, V28, P156 GRIGGS JR, 1982, T AM MATH SOC, V269, P575 LIH KW, 1980, J COMB THEORY A, V29, P182 PROCTOR RA, 1980, DISCRETE MATH, V30, P173 ZHA XY, 1989, EUR J COMBIN, V10, P603 ZHU YX, 1984, J MATH RES EXPO, V4, P148; NR: 9; TC: 1; J9: J COMB THEOR A; PG: 14; GA: YW754Source type: Electronic(1
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