'They wouldn't know how it feels . . .': characteristics of quality care from young people's perspectives: a participatory research project

Literature suggests there is a need to hear from children themselves about the quality of healthcare they receive and, although their views are increasingly sought, little is known about children’s definitions of ‘high or low quality care’. This article reports on a participatory, qualitative study that set out to explore with children and young people whether they could be involved in monitoring the quality of hospital care. Nine young people played an active role in the research process, collecting data from an additional 129 participants aged between 9 and 14. Five characteristics of quality care were identified: ‘technical expertise’, ‘friendly staff ’, ‘respect’, ‘choice’ and ‘explanations’

Technology and Applications of Neutron Generators Developed by Adelphi Technology, Inc

AbstractA standard product line of high yield neutron generators has been developed at Adelphi Technology Inc. The generators use the D-D fusion reaction and are driven by an ion beam supplied by a microwave ion source. Yields of up to 5×109 n/s have been achieved, which are comparable to those obtained using the more efficient D-T reaction. The microwave-driven plasma uses the electron cyclotron resonance (ECR) to produce a high plasma density for high current and high atomic ion species. These generators have an actively pumped vacuum system that allows operation at reduced pressure in the target chamber, increasing the overall system reliability. Variations of these generators have been produced to increase the yield and total flux available. Several of the generators have been enclosed in radiation shielding/moderator structures designed for customer specifications. These generators have been proven to be useful for prompt gamma neutron activation analysis (PGNAA), neutron activation analysis (NAA) and fast neutron radiography. Pulsed and continuous operation has been demonstrated. Larger thermal neutron fluxes are expected to be obtained by multiple ion beams striking a central target that is filled with moderating material. Thus these generators make excellent fast, epithermal and thermal neutron sources for laboratories and industrial applications that require neutrons with safe operation, small footprint, low cost and small regulatory burden

Emission of coherent radiation from a modulated electron beam Contributions

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Effect of impact ionization on the saturation of 1s→2p+ shallow donor transition in n-GaAs

The magneto-photoconductivity due to 1s-2p+ optical transitions of shallow donors in n-GaAs has been investigated as a function of intensity for several bias voltages at low temperatures between 2K and 4.2 K. At low intensities a superlinear increase of the photoconductive signal with rising intensity has been observed which gets more pronounced at higher bias voltages and lower temperatures. The power broadening of the linewidth was found to be distinctly different from the behaviour expected for a two-level system. By a detailed analysis in terms of a nonlinear generation-recombination model it is shown that these effects may be attributed to impact ionization of the optically excited 2p+ states