It has been well known for many years that the long-continued use of certain vibrating tools may lead to the development of Raynaud's phenomenon. Much is known about the clinical aspects ofvibratory Raynaud's phenomenon (see, for example, Agate, 1949), but it is not known how the vibration causes this disability. An important study was undertaken by Guillemin and Wechsberg (1953), who found tha...

Abdallah. M ............................................ 961 Abeyratne, U.R. ...................................... 1482 Abut, H .................................................. 1403 Adams, J.W. ..................... 357, 826, 980, 985 Agate, C.S. .............................................. 444 Agathoklis, P ........................................... 690 Ahmadi, M ...........................

A powder of Cu0.2Ni0.5Zn1.0 Mn1.3O4 composition for custom thermistor was prepared by using the respective mixture metal oxides and solid state reaction at 1000 ?C/4h in air. The obtained milled planetary ball mill agate a prolonged time to achieve submicron powder. further characterized XRD SEM techniques. After that, pressed into small disc-shaped samples sintered 1150 ?C/2h. were also SEM. m...

Abstract We have investigated the effect of addition Al 2 O 3 in manufacture BPSCCO superconductors using solid state reaction method. Precursors with consist Bi , PbO SrCO CaCO and CuO powders were ground mortar agate for h. The samples heated at 300°C 6 h to remove moisture powders, then again Then calculated 820°C 20 (1wt% 2wt%) added again. compacted a diameter 10 mm thickness sintered 850°...

High-thermal performance PWR (pressurized water reactor) spacer grids require both low pressure loss and high critical heat flux (CHF) properties. Numerical investigations on the effect of angles and position of mixing vanes and to understand in more details the main physical phenomena (wall boiling, entrainment of bubbles in the wakes, recondensation) are required. In the field of fuel assembl...

The Black Stone is composed of several dark‐coloured gravels (9.7‐27 mm) held together by a silver frame in the eastern wall Kaaba (Makkah). It contains long prismatic white crystal (0.64‐1.11 and short black (0.33‐0.85 mm length) an equigranular texture. Six one additional pieces are claimed to be Istanbul Edirne, Turkey. stone Edirne quartz (0.45‐6.57 mm, 47.02 %), plagioclase (0.81‐2.97 38.4...

Abstract Agates from Yozgat province are appreciated on the gem market for their white and purple-blue banded colours. In this study, we present a detailed investigation aimed at identification of atomic structural origin peculiar colouration chalcedony. X-ray diffraction Raman spectroscopy revealed presence fine grains quartz moganite with preferential accumulation latter in blue bands. Near-i...