Vicinal sector

The dotted lines indicate the sector associated with the prism face and the subsector of the basal vicinal face of the hillock is shaded, (b) A DIG photomicrograph of an actual hillock on the (100) face of a fluorapatite from the Golconda Mine, Minas Gerais, Brazil. Image is -666 pm vertical. [Modified after Rakovan and Reeder (1996).]... 

The symmetry of the pressure distribution in the two halves of the contact separated by the minor axis of the projected ellipse is apparent. Two pressure peaks are found at symmetrical locations on either side of the centre of the contact. The pressure gradients in the vicinity of the maxima are very large but the pressure decreases much more gradually as the elliptical boundary is approached. The angular location of the position of maximum pressure (equation (21)) was found to be in the sector between ( n /A) and (tt/2) radians from the appropriate minor axis. An increase in the radius ratio (a) caused this location angle to increase. 

It was this commercial market that made the filling operation at Port Hope necessary. To serve private-sector customers, Eldorado had to offer them radium in a form that they could use. The filling lab prepared radium for its primary medical market by packing it in needles, moulds, or tubes in precise quantities. Gradually Errington developed an extensive line of other radium products to serve a wide variety of customer needs. One example was radium-beryllium sources for well-lo ng in the oil business. Companies servicing the mining sector used this technique to determine if there were oil reserves in the vicinity of a dry drill hole. Radium combined with beryllium in the proper ratio produces millions of neutrons a second. This neutron source could be lowered down... 

Finally, it should be remembered that there are other several public sector organizations that also provide outdoor Internet access to their members. Examples include universities which are public institutions in Finland which provide their own network services. All Finnish higher educational units belong to a so-called HAKA system that enables all persons with within one university passwords to access WLANs in all other universities. However, this access is limited only to the vicinity of university controlled hotspots. Quite commonly they cover an entire campus area, but in the case of e.g. Helsinki, where the central campus is dispersed across the central city, it is in practice possible to use free WLAN with a rather extensive coverage. 

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