Mezyn National Natural Park is in the north part of the Korop District of the Chernihiv Region, 310 km2 in area, is characteristic for its strongly dismembered landscape that stipulates presence of varied localities, among them there are exterminated glaciofluvial plains, slopes and super streamside terraces. Aim of research included an expose of the value of the Mezyn NNP in maintenance of forest diversity of vascular plants and forest communities. In the Mezyn NNP there are 772 species of spontaneous flora, 194 species of the cultivated flora and 18 rarity species. The rarest species are concentrated in the centre and the east, prats of the park richer in vegetation cover. In the forest group of the Mezyn NNP 10 species of vascular plants are recordered in the Red book of the Ukraine. The wooden territory of the Mezyn NNP presents 38% and provides the variety of ecotopic terms after they provides a wide spectrum of representation and protection of forest species of vascular plants and corresponding phytocommunites.
On the basis of about 12500 depth measurements of which 6700 were taken from r/v Profesor Siedlecki, 1300 from r/v Polarstern and the remainder from British navigation charts, a bathymetric chart of the Bransfield Strait in the scale 1:500 000 has been prepared. Within the assumed boundaries the total area of the Bransfield Strait covers 65308.6 square kilometres, of which the Western Basin covers 23.5%, Central Basin — 47.3%, and Eastern Basin 29.2%. Capacity of the whole Bransfield Strait amounts to 38451 km3 . The average depth of the Bransfield Strait is 592 m.
Rubberized concrete is made up of scrap tyre rubbers where the fine aggregate is partially replaced by it, as the waste rubber is being a threat to the environment. It is estimated that only 4% of the waste tyre is used in the application of civil engineering and also there is shortage of fine aggregates. The primary objective of this study is to investigate the preliminary concrete properties of M25 and M30 concretes. The fine aggregate is replaced by pre-treated crumb rubber with 10, 15 and 20 % of total weight. Various tests are conducted on the rubberized concrete specimens such as compressive strength, split tensile strength, flexural strength and slump test. The investigation is carried out to determine the impact load behavior of hybrid rubberized composite slabs. In addition 0%, 1%, 1.5%, and 2% of replacement of rubber fibers for total weight of coarse aggregate is also made. The specimen of size 300 mm x 300 mm x 50 mm thickness is subjected to drop hammer test to find its performance against the impact loads. The number of blows for the first crack and complete failure of slab was found and the characteristics were studied.