The Jura-Cretaceous coal seams of the Currier, Mist Mountain, &thing and Gates formations generally formed in delta or strand plain environments with little marine influence. The sulphur contents of coal from these formations is therefore generally low, nearly always less than I % and often less than 0.5 %. Coalbearing formations of the Cretaceous Nanaimo and Skeena groups were deposited in coa...

Evidence for a major extinction of insect herbivores is provided by presence-absence data for 51 plant-insect associations on 13,441 fossil plant specimens, spanning the Cretaceous/Paleogene boundary in southwestern North Dakota. The most specialized associations, which were diverse and abundant during the latest Cretaceous, almost disappeared at the boundary and failed to recover in younger st...

The study aims to develop a quantum learning-based learning instrument on hydrocarbon and petroleum; determine the feasibility of petroleum, effectiveness petroleum improve student's outcomes. This type research is development (R&D) using ADDIE model (analysis, design, development, implementation, evaluation). product developed consists syllabus, lesson plans, teaching materials, assessment...

This document was developed as a literature review and technology assessment of phytoremediation and its alternatives. As such, the stakeholders do not endorse the use of any specific technology, nor do they assume any liabilities with respect to the use of, or damages resulting from the use of, any information, apparatus, method, or process discussed in this document. Mention of trade names or...

bUnequivocal class separations of tissue lipids are important particularly whcn high temperature gas Chromatography is used at the same time for the determination of the long-chain acid composition of major lipid classes. This problem was studied most recently by Hirsch and Ahrens (1) ; their procedurc involves silicic acid column chromatography with clution by ether-petroleum ether mixtures fo...

Forecasting energy price and consumption is essential in making effective managerial decisions and plans. While there are many sophisticated mathematical methods developed so far to forecast, some nature-based intelligent algorithms with desired characteristics have been developed recently. The main objective of this research is short term forecasting of energy price and consumption in Iranian ...

BACKGROUND/AIM To compare estrogen and betamethasone in the topical treatment of labial adhesions in prepubertal girls. MATERIALS AND METHODS In this retrospective study, we evaluated 39 girls with labial adhesions covering at least 50% of the vaginal opening. Of the total patients, 20 were treated with a topical estrogen preparation, while the remaining 19 patients were treated with a combin...

Until the middle of this century, fats and oils are the major raw material source for paints, coating and lubricating applications. These markets are completely taken over by petroleum based stocks due to their abundance and versatility. However, recent public awareness to use environmentally acceptable products that minimize pollution, are compatible to human health and readily biodegradable c...