10,314 research outputs found
Microgastrinae (Hymenoptera: Braconidae) parasitizing Epirrita autumnata (Lepidoptera: Geometridae) larvae in Fennoscandia with description of Cotesia autumnatae Shaw, sp. n.
No full textThe microgastrine subset of hymenopteran parasitoids of the geometrid Epirrita
autumnata is investigated in Fennoscandia. Ecology, including population dynamics,
of the moth has been intensively studied in northern and mountainous
Finland, Norway and Sweden. Recently supported hypotheses about the causes
of its cyclic population dynamics stress the role of parasitoids, while the
parasitoid complex with some 15 species is insufficiently known. The complex
includes four solitarymicrogastrine species, Protapanteles anchisiades (Nixon),
P. immunis (Wesmael), Cotesia salebrosa (Marshall) and C. autumnatae Shaw,
sp. n. Here, we provide detailed figures for the latter, which is morphologically
close to C. jucunda (Marshall), and describe the species as new to science. We
also providemore general habitus figures of the other three species, as well as an
identification key for the four species, aiming to aid recognition of these species
by ecologists dealingwithmicrogastrine parasitoids of E. autumnata and their alternative
geometrid hosts
Arthur Shaw
No full textArthur Shaw, born near El Paso in 1875. Author of "Mellow Memories of Arkansas" published in the Arkansas Gazette from 1932-1933. c. 193
Quantitative relationship between fluctuations of blood pressure and sympathetic nerve activity in pentobarbital anesthetized rats
No full textNear limit premixed flamelets in Hele-Shaw cells
No full textIn this paper we report a preliminary attempt to stabilize near limit premixed flamelets in Hele-Shaw cells. As a quasi-two-dimensional analog of flame balls the flamelet is sustained by diffusive transport alone with fuel supplied from the open ends of the Hele-Shaw cell and heat dissipated to the ambient environment through conduction; radiative heat losses from both phases are neglected. Following Spalding's "one-dimensional idealization" approximation we construct a 2-D model to account for the heat and mass transfer processes in both the gas and the solid phases with the gap height as a parameter controlling the heat exchange rate between the two phases. For each of the three kinds of wall materials considered two steady solution branches are obtained as a function of the gap height one corresponding to large flames and the other to small flames. The large flame branch is critically dependent on the boundary and is therefore of little physical value. Linear stability analysis shows that the small flame branch is unstable to random perturbations. 2-D time dependent numerical simulations indicate that a slightly perturbed steady state on the small flame branch either evolves into a single flamelet drifting to the boundary as a whole or splits into two drifting to the boundary along opposite directions. A partially open square Hele-Shaw combustor has been proposed and is shown to be able to support stabilized flamelets for a certain range of the degree of opening. (C) 2016 by The Combustion Institute. Published by Elsevier Inc
Joan of Arc in Shakespeare, twain and shaw
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Florianópolis, 1983
An evolutionarily conserved mode of modulation of Shaw-like K+ channels.
No full textVoltage-gated K(+) channels of the Shaw family (also known as the KCNC or Kv3 family) play pivotal roles in mammalian brains, and genetic or pharmacological disruption of their activities in mice results in a spectrum of behavioral defects. We have used the model system of Caenorhabditis elegans to elucidate conserved molecular mechanisms that regulate these channels. We have now found that the C. elegans Shaw channel KHT-1, and its mammalian homologue, murine Kv3.1b, are both modulated by acid phosphatases. Thus, the C. elegans phosphatase ACP-2 is stably associated with KHT-1, while its mammalian homolog, prostatic acid phosphatase (PAP; also known as ACPP-201) stably associates with murine Kv3.1b K(+) channels in vitro and in vivo. In biochemical experiments both phosphatases were able to reverse phosphorylation of their associated channel. The effect of phosphorylation on both channels is to produce a decrease in current amplitude and electrophysiological analyses demonstrated that dephosphorylation reversed the effects of phosphorylation on the magnitude of the macroscopic currents. ACP-2 and KHT-1 were colocalized in the nervous system of C. elegans and, in the mouse nervous system, PAP and Kv3.1b were colocalized in subsets of neurons, including in the brain stem and the ventricular zone. Taken together, this body of evidence suggests that acid phosphatases are general regulatory partners of Shaw-like K(+) channels
A 2 kW S-band RF Source for Multipactor Research Utilizing GaN HEMTs
No full textThis dataset includes schematics and board layouts for the control board and biasing modules presented in B. Esser, Z. C. Shaw, J. C. Dickens, and A. A. Neuber, "A 2 kW S-band RF Source for Multipactor Research Utilizing GaN HEMTs," Submitted May 2020
Fifth Circuit Decision in The Aransas Project v. Shaw: the Whooping Crane Case
No full textEditor’s Note: The opinion expressed in this commentary is the opinion of the individual author and not the opinion of the Texas Water Journal or the Texas Water Resources Institute.
Citation: Gulley RL. 2014. Fifth Circuit Decision in the The Aransas Project v. Shaw: The Whooping Crane Case. Texas Water Journal. 5(1):55-58. Available from: https://doi.org/10.21423/twj.v5i1.7010
SPECTRAL ANALYSIS V. WHOLE-BAND ANALYSIS OF ROTATION-VIBRATION BANDS OF LINEAR MOLECULES -
No full text1. J. H. Shaw, C. L. Lin (preceding paper in this session)Author Institution:The whole-band analysis technique described by Shaw and Lin (1) is being applied to absorption bands. Progress in applying this technique to spectra obtained with a Fourier Transform Spectrometer is described
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