The study was carried out in the territory of Polesie State Radioecological Reserve. For long-term environmental effects Chernobyl accident Belarus, Reserve established 1988. It is located Belarus sector exclusion zone. objective to estimate content plutonium isotopes samples inside and outside area. Determination by alpha spectrometry. method includes complete decomposition samples, radiochemi...

Recently, the use of magnetic sorbents has gained a spread attention due to their eco-friendly characteristic, ease separation and low cost. Herein, novel biocomposite sorbent pine cone gel beads (MPCB) was synthetized investigated for single simultaneous removal Cu(II) Cr(VI) from aqueous solution. Pine cones waste materials were first magnetized with Fe3O4 nanoparticles then encapsulated in c...

Hawaii has no native pines, but many species have been introduced as ornamental or potential timber trees. These species have been planted in environments that differ greatly from their natural habitat. This paper describes how the coordinated seasonal cycle of growth and flowering has been influenced by the climatic conditions these pines have encountered in Hawaii. Hawaii has no native pines,...

statement of problem: it has been established that successful root canal treatment depends on the quality of obturation. deeper penetration of spreaders can improve the apical seal and the quality of the obturation. purpose: the aim of this study was to compare the initial penetration depth of spreaders during lateral condensation of 0.04 and 0.02 tapered gutta-percha master cones. materials an...