Megan Oakleaf is an Associate Professor in the iSchool at Syracuse University; e-mail: [email protected]. © 2015 Megan Oakleaf, Attribution-NonCommercial (http://creativecommons.org/licenses/by-nc/3.0/) CC BY-NC. George Kuh and Robert Gonyea’s 2003 article entitled “The Role of the Academic Library in Promoting Student Engagement in Learning” appeared in College and Research Libraries in July 20...

neyshabour turquoise mine is located in northwest of neyshabour, southern quchan volcanic belt. eocene andesite and dacite forming as lava and pyroclastic rocks cover most of the area. subvolcanic diorite to syenite porphyry (granitoids of magnetite series) intruded the volcanic rocks. both volcanic and subvolcanic rocks are highly altered. four types of alteration are recognized including: sil...

Cryptocurrencies are said to be very risky, and so the currencies of emerging economies, including South African rand. The steady rise in movement Africans’ investments between rand BitCoin warrants an investigation as which two is riskier. In this paper, Generalised Pareto Distribution (GPD) model employed estimate Value at Risk (VaR) Expected Shortfall (ES) for exchange rates, BitCoin/US doll...

Anderson, R. G., Arth, C. E., Folkers, K., Harris, S. A., Kaczka, E. A., Mozingo, R., Southwick, P. L. & Wolf, D. E. (1947). J. Amer. chem. Soc. 69, 2753. Angier, R. B., Boothe, J. H., Cosulich, D. B., Fahrenbach, M. J., Hultquist, M. E., Hutchings, B. L., Kuh, E., Mowat, J. H., Northey, E. H., Seager, D. K., Semb, J., Sickels, J. P., Smith, J. M., Stokstad, E. L. R., Subbarrow, Y. & Waller, C....

upper devonian sediments of the kuh-e zard area northwest of zefreh, central iran, arecomposed mainly of brown and grey limestones with sandstone and shale intercalations. they contain tracefossils such as chondrites isp., diplocraterion parallelum, fustiglyphus annulatus, lockeia isp., phycodesisp., and taenidium barretti. these trace fossils indicate a shallow marine environment

the eocene volcanic rocks from the southwest of the jandaq (kuh-e-godar-e-siah, central-east iran micro-continent) are andesitic basalt and andesite in composition. these rocks contain xenoliths with granulitic mineralogy. mineral assemblage of these xenoliths is plagioclase + phlogopite + corundum + sillimanite + chlorite + phengite with granublastic, poiklioblastic and foliated textures in th...

the lut block (eastern iran) extends over 900 km in a north-south direction and is only 200 km wide in an east-west direction. it is confined by the nayband fault and shotori range on the west. the eastern edge is bordered by the sistan suture zone and nehbandan fault. the northern termination of lut block is the depression of kavir-e-namak and the great kavir fault. the makran arc, including t...

kuh-e-faryadoon and kouli kosh iron deposits are hosted by regional metamorphic rocks of sanandaj-sirjan zone around deh-bid area. plugs and domes of acid rocks protrude these metamorphic rocks. a mylonitization event is super imposed on acid rock and metamorphic complexes. field, petrological and geochemical studies have shown that (1) iron mineralization have occurred during mylonitization in...