Health Protection in the U. S. S. R

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Refinement of the Nacrite S T R U C T U R E

Nacrite crystals from a vug within a matrix ofdickite at Red Mountain near Silverton, Colorado, have a = 8.906(2), b = 5.146(1), c = 15.664(3)/~,,/3 = 113.58(3) ~ V = 657.9(3)/~3, and space group Cc. The structure was solved by direct methods to determine phase angles, followed by electron density maps to locate all atoms. Refinement by least-squares ceased at R = 4.5%. Each 7/~ layer has struc...

(r,t)-injectivity in the category $S$-Act

In this paper, we show that injectivity with respect to the class $mathcal{D}$  of dense monomorphisms of an idempotent and weakly hereditary closure operator of an arbitrary category  well-behaves. Indeed, if $mathcal{M}$ is a subclass of monomorphisms, $mathcal{M}cap mathcal{D}$-injectivity  well-behaves. We also introduce the notion of $(r,t)$-injectivity in the category {bf S-Act}, where $r...

نگاشت های R - s - پیوسته

کلاس جدیدی از نگاشتهای پیوسته، به نام نگاشت های R - s - پیوسته ، معرفی میشود. ارتباط میان R - s - پیوستگی با پیوستگی و انواع دیگری ازپیوستگیهای قوی که تاکنون معرفی شده اند، بررسی میشود. سپس ویژگیهای نگاشتهای R - s - پیوسته مورد مطالعه قرار میگیرد.

U . S . Warfighters ’ Mental Health and Readiness

Today’s warfighter like all his predecessors is exposed to an inordinate amount of stressors on the battlefield. A few examples include, sleep deprivation because of the high operational tempo, information overload due to the complex network-centric environment of modern warfare, emotional strain brought about by surrounding violent acts, and anxiety for the welfare of their family members left...