The fission rate during JCO criticality accident is estimated from fission-product (FP) radioactivities in a uranium solution sample taken from the preparation basin 20 days after the accident. The FP radioactivity data are taken from a report by JAERI released in the Accident Investigation Committee. The total fission number is found quite dependent on the FP radioactivities and estimated to b...

Particle creation during inflation is considered. It could be important for species whose interaction is of gravitational strength or weaker. A complete but economical formalism is given for spin-zero and spin-half particles, and the particle abundance is estimated on the assumption that the particle mass in the early universe is of order the Hubble parameter H. It is roughly the same for both ...

A system of three external cavity diode lasers is used to excite Rydberg states in rubidium. The 5S→5P→5D transitions are driven using lasers with λ = 780 and 776 nm respectively. From the 5D state, atoms fluoresce down to the 6P state. The final transition to Rydberg levels is from the 6P state with laser light near λ = 1016 nm. The nS and nD Rydberg states are accessible directly and with the...

CHEST, VOL. 61, NO. 4, APRIL, 1972 3 Martinson FD, Clark BM: Rhinophycomycosis entomophthorae in Nigeria. Amer J Trop Med Hyg 16:40, 1967 4 Cockshott WP, Clark BM, Martinson FD: Upper respiratory infection due to Entornophthora coronata. Radiology 90:1016, 1968 5 Ridley DS, Wise MJ: Unusual disseminated infection with a Phycomycete. J Path Bacter 90:675, 1965 6 Williams AO: Pathology of phycomy...

We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a narrow phase-matching condition. Of import...

Assuming that the Standard Model of particle physics arises from the E8×E8 Heterotic String Theory, we try to solve the discrepancy between the unification scale predicted by this theory (≈ gGUT × 5.27 · 1017 GeV) and the value deduced from LEP experiments (≈ 2 · 1016 GeV). A crucial ingredient in our solution is the presence at low energies of three generations of supersymmetric Higgses and ve...

This paper presents a new method for speech coding at rates around 1.2 kbps based on STRAIGHT, a high quality speech analysis-synthesis method. For encoding spectral information, Modified Restricted Temporal Decomposition (MRTD) based vector quantization is used, where MRTD is a method of temporal decomposition for line spectral frequency parameters. Meanwhile, pitch and gain parameters are cod...

Attwood, Tony, 2002. Dyscalculia in Schools: What It Is and What You Can Do. First and Best in Education Ltd. ISBN 1-86083-614-3; Butterworth,Brian, 2004. Dyscalculia Guidance: Helping Pupils With Specific Learning Difficulties in Maths. David Fulton Publications. ISBN 0-7087-1152-9 Geary DC, Bailey DH, Littlefield A, Wood P, Hoard MK, Nugent L. (2009). "First-Grade Predictors of Mathemati...