Two innovative control technologies for air pollution from the combustion of municipal solid waste (MSW) are discussed. The system concepts of Selective Cat­ alytic Reduction (SCR) and the Electron Beam (E­ Beam) process are presented, along with the extent of demonstrated experience. Estimated capital and op­ erating costs are calculated for each system for oper­ ation on a 1000 tons/day MSW m...

Splitting amplitudes are universal functions governing the collinear behavior of scattering amplitudes for massless particles. We compute the two-loop g → gg splitting amplitudes in QCD, N = 1, and N = 4 super-Yang-Mills theories, which describe the limits of two-loop n-point amplitudes where two gluon momenta become parallel. They also represent an ingredient in a direct x-space computation of...

Robust optimization is a framework for modeling optimization problems involving data uncertainty and during the last decades has been an area of active research. If we focus on linear programming (LP) problems with i) uncertain data, ii) binary decisions and iii) hard constraints within an ellipsoidal uncertainty set, this paper provides a different interpretation of their robust counterpart (R...

This paper addresses the globally optimal solution of the network-constrained unit commitment (NCUC) problem incorporating a nonlinear alternating current (AC) model of the transmission network. We formulate the NCUC as a mixed-integer quadratically constrained quadratic programming (MIQCQP) problem. A global optimization algorithm is developed based on a multi-tree approach that iterates betwe...

The purpose of this study was to evaluate the fabrication of a complete denture using a CAD/CAM system. Cone beam CT was used to measure the complete denture and the artificial teeth. After a 3D complete denture image was structured using 3D CAD software, we factored out the artificial teeth and obtained a 3D denture base image. A machining center cut an acrylic resin block, and fabricated an a...

15 Ribonucleotide reductases (RNRs) are key enzymes in DNA synthesis and repair, with 16 sophisticated allosteric mechanisms controlling both substrate specificity and overall activity. 17 In RNRs, the activity master-switch, the ATP-cone, has been found exclusively in the 18 catalytic subunit. In two class I RNR subclasses whose catalytic subunit lacks the ATP-cone, 19 we discovered ATP-cones ...

15 Ribonucleotide reductases (RNRs) are key enzymes in DNA synthesis and repair, with 16 sophisticated allosteric mechanisms controlling both substrate specificity and overall activity. 17 In RNRs, the activity master-switch, the ATP-cone, has been found exclusively in the 18 catalytic subunit. In two class I RNR subclasses whose catalytic subunit lacks the ATP-cone, 19 we discovered ATP-cones ...

introduction: the purpose of this study was to compare first accessory gutta-percha penetration after the use of nickel-titanium (ni-ti) or stainless-steel spreaders in curved resin blocks. materials and methods: forty resin blocks with 30º and 45º curvatures (20 blocks for each) were prepared and #30 master cones were placed in canals. in part one, under 20 newton pressure, ni-ti or stainless-...