Diffuser/ejector system for a very high vacuum environment

Turbo jet engines are used to furnish the necessary high temperature, high volume, medium pressure gas to provide a high vacuum test environment at comparatively low cost for space engines at sea level. Moreover, the invention provides a unique way by use of the variable area ratio ejectors with a pair of meshing cones are used. The outer cone is arranged to translate fore and aft, and the inner cone is interchangeable with other cones having varying angles of taper

面山瑞方、道元禅の始祖

Menzan Zuiho (1683-1769) was one of the most illustrious writers and reformers of Japanese Soto Zen Buddhism in the Tokugawa period (1603- 1867). Menzan is thought of primarily as a meticulous and hard working editor of the writings of Dogen (1200-1253), the founder of the Soto lineage, but under the cloak of simply returning to the old ways, Menzan used the long neglected texts of Dōgen in entirely new ways to create a reconstituted tradition based on careful textual learning rather than on secretly transmitted lore. After his early years in Kyushu, where he came under the influence of the newly imported Chinese Buddhism called Obaku Zen, Menzan traveled to the capital where he came into contact with early proponents of a new focus on Dogen. Menzan spent most of his later life in Obama City north of Kyoto, first as abbot of Kuinji, and then doing his research and writing at a nearby hermitage. In addition to his work on Dogen, he did fundamental research on monastic regulations, precepts, ordination, and dharma transmission. Menzan’s groundbreaking research into all aspects of Zen texts and teaching set a new standard for Soto Zen learning and created a framework for Soto thinking and practice which persists to this day. With over one hundred titles to his credit, most of which saw print during his lifetime, Menzan’s output dwarfs all other authors of his school. Although Menzan presented himself a conservative editor and historian, in fact he brought about sweeping changes in the doctrinal basis and the daily practice of Soto Zen