CHALLENGES OF ABLATIVELY COOLED HYBRID ROCKETS FOR SATELLITES OR UPPER STAGES


Dioxin induces genomic instability in mouse embryonic fibroblasts.

Ionizing radiation and certain other exposures have been shown to induce genomic instability (GI), i.e., delayed genetic damage observed many cell generations later in the progeny of the exposed cells.The aim of this study was to investigate induction of GI by a nongenotoxic carcinogen, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD).Mouse embryonic fib

read more

Comparative Analysis of Linear and Angular Measurements on Digital Orthopantomogram with Calcaneus Bone Mineral Density

Background: Bone remodeling is a continuous and complex process which occurs throughout life.Radiomorphometric and radioangular indices on the orthopantomogram are the predictors of bone remodeling associated with mandible.Bone mineral density is the amount of calcified tissue in a certain volume of the bone.Materials and Methods: Fifty normal heal

read more


Hadamard products and BPS networks

Abstract We study examples of fourth-order Picard-Fuchs operators that are Hadamard products of two second-order Picard-Fuchs operators.Each second-order Picard-Fuchs operator is associated with a click here family of elliptic curves, and the Hadamard product computes period integrals on the fibred product of the two elliptic surfaces.We construct

read more