The Late Cretaceous was a time of tremendous global change, as the final stages of the Age of Dinosaurs were shaped by climate and sea level fluctuations and witness to marked paleogeographic and faunal changes, before the end-Cretaceous bolide impact. The terrestrial fossil record of Late Cretaceous Europe is becoming increasingly better understood, based largely on intensive fieldwork over th...

Various extracts of flowers of Cassia fistula Linn (Leguminosae) such as petroleum ether (60-80°), chloroform, acetone, ethanol, aqueous, and crude aqueous extracts and two fractions of ethanol extract were tested for antihyperglycemic activity in glucose-overloaded hyperglycemic rats. The effective antihyperglycemic extracts and fraction were tested for their hypoglycemic activity at two dose ...

In Nigeria, like other developing countries, industries discharge their wastewater without effective treatment due to the high cost of existing treatment technologies. Wastewater containing petroleum hydrocarbon is highly toxic and pose a great danger to the nearby communities. Therefore, there is a need for a more robust and cost effective treatment technology. In this research, a study was ca...

For Mass, distributed, heterogeneous data sources of petroleum engineering, this paper presents an petroleum engineering semantic-based data integration technology based on building global semantic mode. PSDT builds a global semantic data model which appropriate to the domain of Petroleum engineering by ontology extraction, ontology mapping, ontology merging, ontology evolution and constraint r...

A short review of the state of the art of research on insects from the Cretaceous period is given. The recent achievements and priorities for future efforts are indicated. © 2014 Elsevier Ltd. All rights reserved. The Cretaceous, the geologic period from circa 145 to 66 million years (Ma) ago is a complex time period in Earth's history (Gale, 2000; Keller, 2008; Cohen et al., 2013). Generally s...

Time-temperature index (TTI) modeling is used to establish a simple theoretical thermal maturity for Paleozoic strata in central Kansas. These thermal maturation calculations are based on estimates of likely geothermal gradients and best knowledge of the tectonic history of the region, as derived from stratigraphic thicknesses and estimates of erosion at unconformities. Major uncertainties in t...

background: radon concentration was measured in 50 drinking water samples in mashhad - iran. b the tap water used for drinking and other household usages can increase the indoor radon level. drinking water samples were collected from various places and supplies of public water used in mashhad. then radon concentration has been measured by portable radon gas surveyor silena (prassi) system. resu...

Fluorosurfactants are effective in a variety of Enhanced Oil Recovery (EOR) techniques including (i) improving subterranean wetting, (ii) increasing foam stability, and (iii) modifying the surface properties of the reservoir formation. While fluorosurfactants have been used in gas and oil exploration for four decades, the increased demand for petroleum and the greater understanding of the benef...

Petroleum based products are the major source of energy for industries and daily life. Leaks and accidental spills occur regularly during the exploration, production, refining, transport, and storage of petroleum and petroleum products. In the present study we isolated the bacteria from diesel contaminated soil and screened them for diesel biodegradation capacity. One monoculture isolate identi...