the aim of the present paper is to evaluate the influence of the soil- foundation- structure interaction (sfsi) effects on the component demand modifier factor of concrete gravity beams based on asce 41-06 standard. to this end, the beam on the nonlinear winkler foundation approach is employed which is a simple and efficient method. at first, four sets of 3-, 6-, 10- and 15-storey concrete mome...

Hydrogen generation via electrochemical water splitting is considered an eco-friendly pathway for obtaining this desired alternative energy source, and it has triggered intensive search low cost efficient catalysts. Within context, four free-base porphyrins were studied as heterogeneous catalysts the oxygen hydrogen evolution reactions (OER HER) in alkaline aqueous solutions. TEM STEM analyses ...

The aim of the present paper is to evaluate the influence of the Soil- Foundation- Structure Interaction (SFSI) effects on the component demand modifier factor of concrete gravity beams based on ASCE 41-06 standard. To this end, the beam on the nonlinear Winkler foundation approach is employed which is a simple and efficient method. At first, four sets of 3-, 6-, 10- and 15-storey concrete mome...

The domain knowledge required to manage and operate modern communications networks is still largely captured in human-readable documents. In this paper we take the position that an embedded machine readable knowledge base that directly supports network management and operations systems is required. We present a framework for such an approach, called KnowOps, and illustrate how it complements an...

The base pair stack of DNA has been demonstrated as a medium for long-range charge transport chemistry both in solution and at DNA-modified surfaces. This chemistry is exquisitely sensitive to structural perturbations in the base pair stack as occur with lesions, single base mismatches, and protein binding. We have exploited this sensitivity for the development of reliable electrochemical assay...

DAY, W. C., GOTTLIEB, S., AND PELCZAR, M. J. 1952 The biological degradatioin of lignin; The inability of Polyporous versicolor to metabolize sodium lignosulfonate. Appl. Microbiol., 1, 78-81. FOLIN, 0. 1929 Two revised copper methods for blood sugar determination. J. Biol. Chem., 82, 83-93. KAYE, S. 1949 The sterilizing action of gaseous ethylene oxide; The effect of ethylene oxide and related...

This review presents synthesis and chemistry of nucleoside analogs, possessing an additional fused, heterocyclic ring of the "etheno" type, such as 1,N(6)-ethenoadenosine, 1,N(4)-ethenocytidine, 1,N(2)-ethenoguanosine, and other related derivatives. Formation of ethenonucleosides, in the presence of α-halocarbonyl reagents and their mechanism, stability, and degradation, reactions of substituti...