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Abstract. We study the existence of solutions for two kinds of boundary value problem in the interval [0,8[. The problems are suggested by models in Mathematical Physics. In the first kind of problem the condition at the left endpoint is u(0) = a while in the second kind a homogeneous Neumann condition u' = 0 is imposed. In both cases solutions should satisfy u(+8) = 0. Our approach is variational, solutions being obtained as minimizers or mountain pass critical points of some functional.

The U.S. Bureau of Mines has demonstrated on a bench scale that quality tungsten monocarbide (WC) can be prepared by a new method. Investigations show that tungsten minerals are decomposed at 1,050°C, in a sodium chloridesodium silicate melt and yield two immiscible phases. A halide-tungstate phase contains 99 percent of the tungsten, and a silicate phase contains more than 90 percent of the gangue constituents. WC is produced by methane sparging the molten halide-tungstate phase. we is recovered from the reactor by decanting the melt and water leaching and scraping. The metallic impurities in the we product are below or near industrial specifications.

It is my privilege to report a rare mycologic infection. It is fortunately possible to present all the data to prove the course of the infection. These include the details of the original trauma, the date of the initial lesion, the interval between the penetration of the fungus and the first clinical manifestations, the results of experimentation with animals and of laboratory tests and, finally, the demonstration of the parasite on the tree which caused the wound. REPORT OF A CASE E. M., a white man aged 51, a Brazilian railroad employee, was cutting limbs from a eucalyptus tree when a small branch fell on the dorsum of his hand and wounded it. Treatment of the wound consisted of daily washing with solution of hydrogen peroxide and application of an ointment. The wound healed in one month. Eight days later vesicles began to appear on the scar. These ruptured,