We explore the duality of construction and deconstruction in the presence of different evaluation strategies. We characterize an evaluation strategy by the notion of substitutability, given by defining what is a value and a co-value, and we present an equational theory that takes the strategy as a parameter. The theory may be extended with new logical connectives, in the form of user-defined da...

Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural petrologic data, following paper provides a detailed description of characteristics Late Paleozoic basic granitoid magmatism in eastern part Kaakhem magmatic area (Eastern Tuva). During formation Shivey alkaline-granitoid Chadal gabbroid massifs period 292–283 Ma, there were revealed two stages contra...

Malignant mesenchymoma within the right ulnar nerve of an 8 year old boy is described. The patient did not have stigmata of von Recklinghausen's neurofibromatosis. The growing and painful tumour was excised five and a half detection, and recurred five months later. Mingling of the nerve sheath sarcoma and rhabdomyosarcoma was noted within the same mass which was separated from the adjacent stri...

This study presents auxiliary support techniques for tree selection strategies based on the spatial structure indices and three competition in secondary forests, discusses importance of forest management. The parameter structured management is used as a quantitative index—the uniform angle index are design algorithm selective thinning forest. Based target tree-based principles, simulation was c...