Marine organisms modify the distribution of radioisotopes in the oceanic ecosystem. Various vital processes of plants and animals concentrate elements. The distributions of the biota are often independent of their watery environment; they may actively migrate vertically or horizontally or may remain in place while the water moves past them. In the case of plankton, the concentrating organisms p...

The Raduha section represents a continuation of the research Anisian Strelovec Formation in Kamnik-Savinja Alps. was deposited during on drowned Serla Dolomite carbonate platform restricted probably outer ramp environment associated with an intraplatform basin. base is represented by dolostone breccia containing angular lithoclasts shallow-marine origin. This followed alternations laminated and...

Pyritized burrows from three localities were analysed using LA-ICP-MS to determine their trace element content and assess ability sequester elements. Pyritic Hock Cliff (Jurassic), Wren's Nest (Silurian) Southerham Grey Pit (Cretaceous) have anomalous levels of Se, Cu Pb are enriched relative host sediments. Sequestration rates calculated sedimentation similar depositional environments. Results...

Zeta sedimentation ratio (ZSR) is a simple, rapid and reproducible test which is not influenced by variables like sex and anemia. There is good correlation with Westergren erythrocyte sedimentation ratio (ESR) in normal and hospital population. Limitation of packing force affects the use of the procedure in polycythemia and in patients with ZSR greater than 80%.

Nitrogen (N) is often the key nutrient limiting primary production in coastal waters. Quantifying sources and sinks of N therefore critical to understanding factors that underpin productivity ecosystems. Constraining nitrogen inputs can be difficult for some terms such as fixation marine exchange a consequence uncertainties associated with scaling stochasticity. To help overcome these issues, w...

Presence of salts in water has been one of the biggest problems of industrial equipment such as evaporators, boilers, and pipes. These salts gradually form scales on evaporators and boilers tubes and reduce their efficiency. Pretreatment processes are conducted to remove these salts; with sedimentation tanks being one of the essential equipment used in these processes. This study numerically si...

Subduction of bathymetric anomalies (e.g., an active ridge) can alter the morphology subducted slabs and their coupling to surface processes. A natural laboratory study these effects is subduction Oceanic Chilean Ridge beneath South American plate, which led formation Patagonian slab window. Its subsequent northward migration contributed regression Patagoniense sea exhumation marine strata pres...

Abstract The present study deals with microfacies analysis, paleoecology and sequence stratigraphy of the Lower–Middle Eocene rocks in central Nile Valley west-central Sinai. Four rock units were marked (Minia, Darat, Samalut Maghagha formations). Eight facies belts interpreted including lagoon, back bank, main fore bank open marine outer deposited on a gently dipping platform ramp. This ramp m...

The sulfur biogeochemical cycle plays a key role in regulating Earth's surface redox through diverse abiotic and biological reactions that have distinctive stable isotopic fractionations. As such, variations in the sulfur isotopic composition (δ34S) of sedimentary sulfate and sulfide phases over Earth history can be used to infer substantive changes to the Earth's surface environment, including...

Pre-sedimentation basins are among the most important elements of the conventional water treatment process. In pre-sedimentation basins, due to different velocity gradients, secondary and rotational flows are formed that will create short paths and increase dead and still flow zones as well as changes in the flow mixing. This will prevent laminar flow conditions for sedimentation and will reduc...