Having just completed 1,000 Litholapaxies, I venture to submit a short account of the operation, its difficulties, its complications and its results. There are few places in India which offer greater opportunities for the performance of this operation than Hyderabad in Sind. And this fact leads me to discuss very briefly why vesical calculi should be so 'prevalent in this district. Although cas...

K. Fleischer, ∗ R. Verre, 2 O. Mauit, R. G. S. Sofin, L. Farrell, C. Byrne, C. M. Smith, J. F. McGilp, and I. V. Shvets. 1 School of Physics, Trinity College Dublin, Dublin 2, Ireland Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland Departmen...

Rule 110 is a cellular automaton that performs repeated simultaneous updates of an infinite row of binary values. The values are updated in the following way: 0s are changed to 1s at all positions where the value to the right is a 1, while 1s are changed to 0s at all positions where the values to the left and right are both 1. Though trivial to define, the behavior exhibited by Rule 110 is surp...

The large interest in the properties of transition metal surfaces has been recently fostered by inelastic helium atom scattering experiments carried out by Hulpke and Lüdecke. Sharp and giant anomalies in the surface phonon dispersion curves along ΓH and ΓS have been detected on W(110) and Mo(110) at a coverage of one monolayer of hydrogen. At the same critical wave vectors a smaller second ind...

We have previously shown that cytological diagnosis based on fine-needle aspiration biopsy (FNAB) is a safe and efficient method for the discrimination between benign, primary malignant and metastatic bony lesions. We have now studied metastatic lesions to assess the diagnostic accuracy and to ascertain whether FNAB allows identification of the primary lesion. Between 1990 and 1997, 447 patient...

Proteins are known to undergo a dynamical transition at around 200 K but the underlying mechanism, physical origin, and relationship to water are controversial. Here we report an observation of a protein dynamical transition as low as 110 K. This unexpected protein dynamical transition precisely correlated with the cryogenic phase transition of water from a high-density amorphous to a low-densi...

We present CCD BV photometry of the intermediate age open cluster Collinder 110, a nearby, scarcely populated, and poorly studied system. There is no literature information on the metallicity, so we tested several possibilities, and found a slight evidence of sub-solar abundances. Using the synthetic Colour Magnitude Diagrams technique we estimate the following parameters: age between 1.1 and 1...

We have measured the magnitude and phase responses of a photoreceiver to 110 GHz using a calibrated electro-optic sampling system. The frequency range of the calibration is limited only by our 1 mm coaxial connectors. In this paper, we present a method for accurately characterizing the response of a commercially available photoreceiver to 110 GHz, nearly three times the bit rate of 40 Gb/s opto...

Surface defects are known to dominate both the electronic and chemical properties of metal oxide surfaces, an object of much study for use in catalytic processes. In order to study surface chemistry in detail, an ultra-high vacuum (UHV) chamber was designed to combine a LEED and STM system. Construction is underway, with a reported initial base pressure of 10−9 Torr revealing no major leaks. On...