Aiming to investigate the deposition of pollen grains and spores in Guanabara Bay, Rio de Janeiro State, 61 surface sediment samples were analyzed. The results showed that the current deposition of palynomorphs in surface sediments of Guanabara Bay represents the regional vegetation of this hydrographic basin. The differential distribution of palynomorphs followed a pattern influenced by bathym...

The Larsemann Hills (69°24'5, 76°20'E), situated on the Ingrid Christensen Coast of Princess Elizabeth Land, Antarctica, consist of a series oflow-Iying, rocky peninsulas and islands on the southern shore of Prydz Bay. This area (fig. 1), which extends over 200 km2, is ice-free during the summer and bestrewn with more than 150 freshwater lakes. In the 1990/91 and 1991192 austral summers, the op...

Abeam-A~osphe~c aerosols were measured in August 1983 on Allegheny Mountain and Laurel Hill in southwestern Pennsyivania. Ambient humidity was observed to influence the coarse to fine particle ratios as determined by dichotomous samplers. This influence is evident in the particle mass and in its component chemical species. The sampling run with the most pronounced mass shift resulted in an appa...

A suite of 36 surface sediment samples, taken between 10 and 100 m water depth in Mejillones Bay (Northern Chile), were analyzed for mineralogy, grain size, total organic carbon, Al, and heavy metal content (Cd, Zn, Ni, Mn, V, Mo). Quartz and feldspars were the main lithogenic minerals and carbonate the predominant biogenic mineral. Sediments were fine sands in the shallow zone and organic silt...

The writers have recently received from Mr. Alan Owston, of Yokohama, well known as a shipmaster and as a collector in natural history, a very remarkable series of fishes obtained on long lines in the depths of Sagami bay and Siiruga bay, Japan. The present paper contains notes on these species, together with field notes of Mr. Owston. The specimen of Mitsukurina otvstoni and some of the others...

Infection with Helicobacter pyloriis the most common cause of stomach and duodenal ulcers. About more than 80 % of people are infected with H. pylori in developing countries. H. pyloriuses urease enzyme product “ammonia” in order to neutralize and protect itself from the stomach acidic condition and urease enzyme activity has been shown to be essential to the colonization of H. pylori. Inhibito...

The work, based on the results of original research and analysis literary sources, presents peculiarities structure flowers their formulas a number subtropical plants that are grown in open ground collection plots «Garden Subtropical Fruit Cultures» «Shaped Garden» Khorolsky Botanical Garden (Poltava Region) Sered them, 11 species already flowering fruiting collection, rest still growing. These...

The Mediterranean basin has been a refugium for relict plant taxa and native laurophyllic forests. Latium coasts and, especially, the Antica Lavinium site, host forest communities, whose natural importance is enriched by their cultural value. Here, we aim at investigating ecological framework, historical values, management over time, of communities that have Laurus nobilis Celtis australis as p...

The objective of this study was to determine the upper thermal limits of Arctic cod Boreogadus saida by measuring the response of maximum heart rate (f(Hmax)) to acute warming. One set of fish were tested in a field laboratory in Cambridge Bay (CB), Nunavut (north of the Arctic Circle), and a second set were tested after air transport to and 6 month temperature acclimation at the Vancouver Aqua...