Lipids in ocean particulate matter and bottom sediments

Lipid contents both in particulate matter and bottom sediments decreases with passage from the shelf toward the open ocean. Lipid concentration in particulate matter collected by a separator (Ls) decreases by a factor of 7 (from 7.05 to 0.95 % of dry matter), while in particulate matter collected on filters (Lf) it decreases by a factor of 13 (from 78 to 6 µg/l) in the vicinity of the Limpopo River and by a factor of 6 (from 74 to 13 µg/l) in the vicinity of the Zambezi River. Concentration of Lf also decreased with depth. In the upper sediment layers lipid concentration was 0.0028-0.039% of dry matter; all mud samples were richer in lipids, than sand samples. During sedimentogenesis there is an increase in proportion of lipids relative to other classes of organic matter, proportion of low-polarity compounds increases among the lipids, and proportion of hydrocarbons rises among these compounds. Sediments inherit composition of particulate matter to the greatest degree in the vicinity of river mouths.

Imagens da mulher na revista Vida Capichaba (1940-1949)

Investiga imagens da mulher na revista Vida Capichaba, periódico de publicaçao quinzenal que circulou, no Estado do Espírito Santo, entre as décadas de 1920 e 1950. Tem como foco as ediçoes publicadas entre os anos de 1940 e 1949. Analisa os imperativos sociais destinados à formaçao da mulher capixaba. Conclui que esses imperativos eram ambivalentes (ao mesmo tempo conservadores e subversivos), tendo a prática esportiva, e a moda a ela associada, papel importante na construçao de novas imagens e sentidos do feminino

Composition of ocean suspended matter

Compositions of different types of ocean suspended matter are under consideration.

Imagens da mulher na revista Vida Capichaba (1940-1949)

Investiga imagens da mulher na revista Vida Capichaba, periódico de publicaçao quinzenal que circulou, no Estado do Espírito Santo, entre as décadas de 1920 e 1950. Tem como foco as ediçoes publicadas entre os anos de 1940 e 1949. Analisa os imperativos sociais destinados à formaçao da mulher capixaba. Conclui que esses imperativos eram ambivalentes (ao mesmo tempo conservadores e subversivos), tendo a prática esportiva, e a moda a ela associada, papel importante na construçao de novas imagens e sentidos do feminino

Elemental abundance and water content at DSDP Leg 86 Holes

X-ray fluorescence analyses of 1143 samples from Site 576 (32°21.4'N, 164°16.5'E) and 539 samples from Site 578 (33°55.6'N, 151°37.7'E) for the elements Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe, Ba, and S show consistent trends from Si-rich surficial deposits to dark brown clays rich in Mn, Fe, P, and Ti in early Cenozoic sections. These data sets form the basis for a detailed paleogeochemical stratigraphy of North Pacific "red" clays.

Imagens da mulher na revista Vida Capichaba (1940-1949)

Investiga imagens da mulher na revista Vida Capichaba, periódico de publicaçao quinzenal que circulou, no Estado do Espírito Santo, entre as décadas de 1920 e 1950. Tem como foco as ediçoes publicadas entre os anos de 1940 e 1949. Analisa os imperativos sociais destinados à formaçao da mulher capixaba. Conclui que esses imperativos eram ambivalentes (ao mesmo tempo conservadores e subversivos), tendo a prática esportiva, e a moda a ela associada, papel importante na construçao de novas imagens e sentidos do feminino

Biomass of picophytoplankton in the Black Sea in winter 1991

Studies of picophytoplankton were carried out in the open Black Sea from February to April 1991 with concomitant blooming of diatoms. During this period cyanobacteria predominated in picoplankton averaging 98.8% of total picophytoplankton abundance and 95% of total picoplankton biomass. In February number of cells reached 1.5x10**9 per liter in the East Black Sea. Picoplankton biomass decreased during the observation period. From February to March biomass varied from 452 to 4918 mg/m**2 (av. 1632 mg/m**2), and from March through April from 4 to 656 mg/m**2 (av. 190 mg/m**2). Vertical distribution of picoplankton was determined by the upper margin of the main pycnocline. The major part of picoplankton biomass occurred in the mixed layer. With appearance of seasonal pycnoclines in the last days of March maximum biomass occurred under the upper mixed layer. No relationship was observed between Nitzschia delicatula bloom and picoplankton.