59 research outputs found
Analysis of P2X7 Receptor and Panx1 Expression in Osteoporosis
It has been found that there exist certain crystalline aluminosilicates which provide regular net-works of channels with diameters no bigger than those of molecules. Such crystals can act as sieves (thus the name molecular sieves now marketed by the Linde Air Products Company) and bring about a separation of molecular species by occluding small molecules while not adsorbing larger molecules or molecules with shapes that do not fit.
The aluminosilicates were termed zeolites first by Baron Cronstedt (1) some 200 years ago. He observed that certain mineral crystals, when heated, appeared to melt and to boil at the same time. Thus, from the Greek zeo, to boil, and lithos, stone, Cronstedt coined the term zeolite.
The use of zeolite (molecular sieves) has increased during the past several years. The earlier work (1930- 1950) involved the study of the naturally occurring zeolites. During the last ten years the activity has been concerned with the use of synthetic crystalline zeolites in separating both gaseous and liquid components by the molecular sieve action
Differential expression of mitochondrial and ribosomal genes during fracture healing in mouse
Roll 369b. Homecoming Parade. Image 22 of 36. (8 February, 1958) [PHO 1.369b.23] Some images from this roll are restricted.The Boleslaus Lukaszewski (Father Luke) Photographs contain more than 28,000 images of Saint Louis University people, activities, and events between 1951 and 1970. The photographs were taken by Boleslaus Lukaszewski (Father Luke), a Jesuit priest and member of the University's Philosophy Department faculty
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