during recent years oil products has decreased because of growing population and increasing demand to oil products and decreasing of crude oil extraction at compare to export. however, to achieve suitable levels of production, the use of improved technologies should be considered. another way to prevent the evaporation and leakage from oil storage tanks and their products are using of storage t...

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The information loss paradox for Schwarzschild black holes is examined, using the ADS/CFT correspondence extended to the M6(4, 2) bulk. It is found that the only option compatible with the preservation of the quantum unitarity is when a regular remnant region of the black hole survives to the black hole evaporation process, where information can be stored and eventually retrieved. The ADS/CFT C...

The paper is addressed to those concerned with improving effectiveness of small or large libraries, or those considering the establishment "of a new collection in a certain subject area." The large staffing and cost frequently discourages the setting of satisfactory services. The paper submits for consideration an avenue of using automatic aids to achieve effectiveness within the bounds of econ...