Sinking aggregates are the major component of the vertical particulate flux in most regions of the ocean. Controlling factors for aggregate remineralization rates and solute exchange with the surrounding water, however, are poorly quantified because of few empirical data. To study the role of flow and diffusion on aggregate remineralization rates, oxygen distributions were mapped within and aro...

Water-in-crude oil emulsions are formed during petroleum production and asphaltenes play an important role in their stabilization. Demulsifiers are added to destabilize such emulsions,however the demulsification mechanism is not completely known. In this paper, the performances of commercial poly(ethylene oxide-b-propylene oxide) demulsifiers were studied using synthetic water-in-oil emulsions ...

Land management affects soil structure and many other properties processes. Our objectives were to evaluate organic C (SOC), aggregate size distribution, aggregate-associated C, as affected by long-term land slope. A chronosequence of 38 on-farm sites with low high (5–18%) slopes was selected 5–40 yr management. The classified business usual (BAU) cropland (BAU-Crop), BAU pasture (BAU-Past), ne...

this paper is based on an experimental research that examined the effects of concrete`s major parameters on durability of concrete pavements and curbs under freezing and thawing cycles. these parameters include concrete mix design parameters such as water-cement ratio, fine aggregate percentage and using air entraining admixture and simulating real freeze-thaw cycles that infrastructures underg...

This paper is based on an experimental research that examined the effects of concrete`s major parameters on durability of concrete pavements and curbs under freezing and thawing cycles. These parameters include concrete mix design parameters such as water-cement ratio, fine aggregate percentage and using air entraining admixture and simulating real freeze-thaw cycles that infrastructures underg...

Article history: Received 16 September 2012 Received in revised form 4 September 2013 Accepted 17 October 2013 Available online 23 October 2013 In this paper we revisit the evidence recently provided by Philippon (2009) about the relationship among bond market's Q, stock market's Q and aggregate investments for the US. Specifically, we analyze the stability of the relationship between aggregate...

Porous asphalt pavement is mainly used for parking lots which able to let water drain through the surface into a stone recharge bed and infiltrate soils under pavement. This study investigate performance of seashell in porous determine image analysis. The this cockle shell. strength was determined Aggregate Impact Value Test (AIV) Crushing (ACV). grade bitumen 60/70. volumetric properties Marsh...