Petroleum coke is processed into calcined coke in a rotary kiln, where the temperature profiles of flue gas and coke bed are highly nonuniform due to different flow and combustion mechanisms. Motivated by saving energy costs, the effect of refractory brick's thermal properties on potential energy savings is investigated. This study focuses on investigating potential energy savings by replacing ...

A brick is a 3-connected graph such that the graph obtained from it by deleting any two distinct vertices has a perfect matching. The importance of bricks stems from the fact that they are building blocks of the matching decomposition procedure of Kotzig, and Lovász and Plummer. We prove that every brick except for the Petersen graph can be reduced to K4 or the prism by repeatedly applying a ce...

A (semi)brick over an algebra is a module S such that its endomorphism ring EndA(S) (product of) division algebra. For each Dynkin diagram Δ, there bijection from the Coxeter group W of type Δ to set semibricks preprojective Π which restricted join-irreducible elements bricks Π. This paper devoted giving explicit description these bijections in case Δ=An or Dn. First, for element w∈W, we descri...

The Olivetti Research Laboratory has developed an experimental system based on intelligent peripherals connected directly to an ATM network. As well as multimedia modules (e.g. audio and video) the system also includes a directly connected RAID-3 storage server called the “Disc Brick”. This paper describes the architecture of the Disc Brick, and discusses some of the hardware and software issue...

We examine the matrix element of a current with arbitrary number s of four vector indices between one particle states of definite helicity. The conservation of the angular momentum in the brick wall reference frame was used to derive a set of linear relations between the matrix elements. Requiring the helicities of the particles to be conserved asymptotically, we derive a restriction on the spi...

In this work, we develop a 3-D finite-element-method (FEM) solver, NTUPZE, for piezoelectric transformer (PT) analyses. The solver employs the 8-node brick element, and applies the harmonic analysis to study the voltage gains and the phase difference at different frequencies for PTs. Using the NTUPZE, we analyze two different types of piezoelectric transformers: the modal-type and the unipoled-...

Brick industry in India is the second largest brick producer in the world after China. The industry is one of the largest employment generating industries employing millions of people. The present study focuses on the brick industries located in North Karnataka, India, where about 1500 brick kilns are operating employing thousands of workers. The main aim of this study is to investigate the sel...

One of the major problems in electric arc furnace is high temperature which results thermal stresses and cracks within material surrounding walls. An effective cooling technique needed to avoid such problems. For this purpose, a novel roof configuration an used provide efficient reduce material. The consists two solid materials, namely, copper alumina brick. achieved by water circulation roof. ...

Background Air quality monitoring in brick kilns indicates very high concentrations of airborne particulate matter. Air pollution from brick kilns poses an enhanced threat to the environment and to human health. Objective To evaluate airborne particulate matter concentration and health status of brick kiln workers. Method A cross-sectional comparative study was conducted in the Kathmandu valley...