Since last few years cement replacement materials with industrial by-products and agricultural wastes in concrete production are widely used. It imparts positive environmental effect because the waste materials are not released to the environment. It was reported that the leakage of motor oil onto concrete surfaces in old grinding units increased the resistance such concrete to freezing and tha...

Ditylenchus dipsaci is an anhydrobiotic nematode which can withstand direct exposure to extreme desiccation. Water loss has been determined gravimetrically and morphological changes quantified by light microscopy. Water loss occurs in two distinct phases, with a permeability slump 2 min after the onset of desiccation. The permeability slump remains after treatment with sodium azide or carbon di...

Motivated by the recent experiences of the euro area and Japan, this paper presents a model that captures the joint occurrence of a liquidity trap and a jobless recovery. Its key elements are downward nominal wage rigidity, a Taylor-type interest-rate feedback rule, the zero bound on nominal rates, and a confidence shock. Absent a change in policy, the model predicts that low inflation and high...

The slump test is a physical examination procedure used for evaluating patients with spinal and lower extremity complaints. The test seeks to rule out or identifY tension in the neuromeningeal tract. The performance of the test places traction on the neuromeningeal tract from head to foot. Traction on non-neurological tissues also occurs during testing. To localize pathology to specific regions...

In this research the effects of adding silica and alumina nanoparticles on flow ability and compressive strength of cementitious composites based on Portland cement were investigated. In the first stage, the rheological behavior of different samples containing nanosilica, nanoalumina and polypropylene, polyvinyl alcohol and polyethylene fibers were evaluated. With increasing of nanoparticles in...

Contemporary optical fibers can deal with almost all of the unfavorable effects which are known these days. They have sufficiently low specific slump, they can handle a slump caused by OHions, they can restrain the multimode effect and finally they can compensate a chromatic dispersion. But there is one problem, which the present science can’t solve and this problem is the Polarization Mode Dis...

Self-consolidating concrete (SCC) has been developed for use in precast prestressed concrete bridge girders in the state of Minnesota. Locally available materials were used with a number of cementitious and filler materials, including ASTM Type III cement, Class C fly ash, and blast furnace slag. SCC was successfully proportioned with both natural river gravels and crushed stone as coarse aggre...