Productivity of a promising forage species Poterium polygamum Waldst. & Kit. in the conditions of North Ossetia- Alania

The article presents the results of a long-term study of Poterium polygamum Waldst.& Kit. when introduced into culture in the collection nursery of plants of the Research Institute of Biotechnology in the Botanical Garden of the Gorsk State Agrarian University (Republic of North Ossetia - Alania) with the participation of the staff of the Botanical Garden of the Belgorod State University. The morphological features of P. polygamum are described: the structure of vegetative and generative organ

Productivity of Galega (Galega orientalis) in single- species and binary crops with sainfoin (Onobrychis arenaria): a case study of forest-steppe of European Russia

The results of field experiments on the cultivation of Eastern galega (Galega orientalis Lam.) in pure form and in binary sowings together with Hungarian sainfoin (Onobrychis arenaria (Kit.) DC) on eroded black soils of the south of European Russia were give

Effect of Activator and Outgoing Ligand Nature on the Catalytic Behavior of Bis(phenoxy-imine) Ti(IV) Complexes in the Polymerization of Ethylene and Its Copolymerization with Higher Olefins

A series of bis(phenoxy-imine) (FI) titanium(IV) and zirconium(IV) complexes have been synthesized. The effect of the nature of the activator (MAO, combinations EtnAlCl3-n + Bu2Mg and iBu3Al + [Ph3C]+[B(C6F5)4]−) on the catalytic activity and properties of the resulting polymers was studied. It was found that Ti-Fi complexes, despite the nature of the outgoing ligands (Cl or iPrO) in the presence of Al/Mg activators, effectively catalyze the polymerization of ethylene (with the formation of UHMWPE); copolymerization of ethylene with 1-octene (with the formation of ultra-high molecular weight copolymers); and the ternary copolymerization of ethylene, propylene and 5-vinyl-2-norbornene (with the formation of polyolefin elastomers). It has been shown that Zr-FI complexes are not activated by these Al/Mg compositions. The resulting UHMWPE can be processed by a solventless method into high-strength and high-modulus oriented films; however, their mechanical characteristics do not exceed those obtained using MAO