2,020 research outputs found
The Deer Flies of Indiana (Diptera: Tabanidae: \u3ci\u3eChrysops\u3c/i\u3e)
(excerpt)
The great majority of specimens, over 12,000 out of 13,185, which form the basis of this study, were collected by the writer during the flight season of the summer of 1963. These are on deposit in the Museum of the Department of Entomology, Purdue University, West Lafayette, Indiana. Other specimens in the collections of the Indiana Department of Natural Resources, Indianapolis, Indiana, of Purdue, and of Earlham College, Richmond, Indiana are incorporated herein. Most specimens in the latter museum were collected, some by the writer, during an earlier general insect survey of the Whitewater River watershed
Genotype moderates the impact of food additives on hyperactive behavior in children
Introduction: The claim of a relationship between artificial food color and additive (AFCs) intake and behavior is highly contentious. We have shown in a previous population-based trial with 3yo children adverse effects of food additives on parentally-rated hyperactive behaviour (Bateman et al, 2004). The possible role of genetic polymorphisms in moderating this adverse effect has not been previously examined. Methods A randomised, double blind, placebo-controlled, within subject crossover food challenge was used for 144, 8 to 9 year old children and 153, 3 year old children. Following baseline assessment children were placed on a diet eliminating food additives and a benzoate preservative for 6 weeks during which time they were challenged for weekly periods with either a placebo mix or a drink containing sodium benzoate (45mg daily) and one of two mixes of AFCs.: Results: The T939C and Thr105Ile polymorphisms of the histamine N-methyltransferase gene (HNMT) moderated the adverse effect s of AFCs but the polymorphisms in catecholamine genes COMT Val108Met and ADRA2A C1291G did not. These findings point to a possible role for histamine in mediating the effects of food additives and help to explain why there has been inconsistency between previous studies. Conclusions: Genes influencing a range of neurotransmitter systems and their interplay with environmental factors, such as diet, need to be examined to understand genetic influences on hyperactivity.<br/
Knowledge management sans frontières
Knowledge management is a topic that crosses borders of various kinds, such as those between departments, between organisations or between countries. In this paper we will consider various issues relating to knowledge management, in the context where more than one department/organisation/country is involved. To do this, we place an emphasis on knowledge management as a process, rather than as an organisational system or, worse, as a piece of technology. This process involves trust, negotiation—and indeed some technological support. In this paper we wish to introduce the concept of ‘triangles of trust’, and to focus on where ‘the top meets the bottom’ in terms of knowledge management and organisational learning. Partial examples will be offered in support of our views, but no full and complete examples—knowledge management simply is not well enough understood or documented for that yet. Our overall conclusion is that there is no one best way to “do” knowledge management, but there are principles that ought to be applied
Letter from John S. (J.S.) Inskip to James B. Finley
J.S. Inskip writes to Finley concerning his recent trial at the 1851 Ohio Conference. For the second year, Inskip has been censured for allowing men and women to sit together in pews ( promiscuous seating ) during worship. Inskip has a copy of the proceedings and will be appealing to the 1852 General Conference. He would like Finley\u27s assistance. [Note: Finley is supportive of promiscuous seating, to the displeasure of many colleagues. This is a separate issue from free pews. ] Abstract Number - 471https://digitalcommons.owu.edu/finley-letters/1669/thumbnail.jp
Letter from John S. (J.S.) Inskip to James B. Finley
Inskip is indignant over the treatment of Finley in his old age. Members of the Ohio Conference opposed to promiscuous seating have been unmerciful in their criticism of Finley for championing the idea of family seating. Inskip is convinced that the Ohio Conference accusers will meet with failure at General Conference. [He was right]. Finley Chapel at Dayton has changed its name to Raper Chapel in order to honor the memory of Rev. Raper. Inskip\u27s accusers are spreading the rumor that the church no longer wishes to bear Finley\u27s name due to his support of promiscuous seating. Inskip reassures Finley that this was not the reason for the name change. He is hopeful that Finley will be able to attend General Conference in Boston. Abstract Number - 1224https://digitalcommons.owu.edu/finley-letters/2204/thumbnail.jp
Nonlocality of Two-Mode Squeezing with Internal Noise
We examine the quantum states produced through parametric amplification with
internal quantum noise. The internal diffusion arises by coupling both modes of
light to a reservoir for the duration of the interaction time. The Wigner
function for the diffused two-mode squeezed state is calculated. The
nonlocality, separability, and purity of these quantum states of light are
discussed. In addition, we conclude by studying the nonlocality of two other
continuous variable states: the Werner state and the phase-diffused state for
two light modes.Comment: 7 pages, 5 figures, submitted to PR
Optimization of superstructured fiber bragg gratings for microwave photonic filters response
The microwave photonic responses of superstructured fiber Bragg gratings in combination with dispersive fiber are investigated theoretically and experimentally. The superstructured gratings are optimized, taking account of the spectral response of the broad-band source, Erbium-doped fiber amplifier, and optical tunable filter to achieve a filter response with sidelobe suppression of more than 60 dB. © 2004 IEEE
Design and fabrication of highly efficient non-linear optical devices for implementing high-speed optical processing
We present the design and fabrication of micro-cavity semiconductor devices for enhanced Two-Photon-Absorption response, and demonstrate the use of these devices for implementing sensitive autocorrelation measurements on pico-second optical pulses
High-sensitivity two-photon absorption microcavity autocorrelator
A GaAs-AlAs microcavity device has been used as a photodetector in an autocorrelator for measuring the temporal pulsewidth of 1.5-/spl mu/m optical pulses. Enhancement of the two-photon absorption photocurrent due to the microcavity structure results in an autocorrelation (average power times peak power) sensitivity of 9.3/spl times/10/sup -4/ (mW)/sup 2/, which represents two orders of magnitude improvement when compared with conventional autocorrelators
Two-photon absorption in microcavities for optical autocorrelation and sampling
We have designed novel semiconductor microcavity structures for the enhancement of the two-photon absorption (TPA) photocurrent. We report a TPA autocorrelation technique for short optical pulses that uses the microcavity structure instead of a second harmonic generation crystal. Knowledge of these characteristics is important for implementation in applications such as optical switching and sampling in optical time division multiplexed (OTDM) communications systems
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