We present the first results from the first Caltech-Jodrell Bank VLBI survey (the CJl survey). The CJl sample includes 135 radio sources with total flux density 1.3 Jy > S6 cm ~ 0. 7 Jy, declination 01950 ~ 35°, and Galactic latitude I b 11 I > 10°. It extends the flux density limit of the complete "PR" sample studied by Pearson & Readhead from 1.3 to 0. 7… (More)
Suitable dosimeter methods have to be developed to measure the different dose contributions in phantoms exposed to epithermal/thermal neutron beams of a research reactor. The method based on Fricke xylenol orange gel dosimeter in form of layers has shown to be very effective for achieving images of the various dose components in air or in phantoms exposed… (More)
Research progress on the optimization in order to obtain the value of material constants for a set of creep damage constitutive equations was presented, including (1) a brief review of continuum creep damage modeling and the designs of objective functions; (2) case study reporting the influence of the initial start points on the final results; and (3)… (More)
Considering heavy forged parts presented that water spray is an appropriate technique as quenching operation. In general, the rapid cooling causes residual stress field due to the dis-homogeneity of the distribution of temperature in the part and the different microstructural phases. In comparison with other conventional quenching methods, spray-quenching… (More)
In the most recent decades the introduction of unconventional machining processes allowed the development of micromachining techniques. In this work, the influence of material microstructures on the micromilling process was investigated. Ti6Al4V alloy was selected as workpiece material since it is a very common material for micro applications and because… (More)
Neutron energy spectra at different emission angles, between 0° and 120° from the Be(p,xn) reaction generated by a beryllium thick-target bombarded with 5 MeV protons, have been measured at the Legnaro Laboratories (LNL) of the Italian National Institute for Nuclear Physics research (INFN). A new and quite compact recoil-proton spectrometer, based on a… (More)
The development of microdosimeters and particle telescopes is important for risk assessment in space and aviation applications. The charge collection properties of a monolithic particle telescope, suitable for both microdosimetry and fluence based approaches, were studied using an ion microprobe.