Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Engineering

PDF

Selected Works

2006

Institution
Keyword
Publication

Articles 271 - 276 of 276

Full-Text Articles in Entire DC Network

Optimization Of The Thermal Utilisation Of Sewage Sludge In An Installation With A Bubbling Fluidised Bed Reactor, Jerzy Baron, Malgorzata Olek, Witold Zukowski Dec 2005

Optimization Of The Thermal Utilisation Of Sewage Sludge In An Installation With A Bubbling Fluidised Bed Reactor, Jerzy Baron, Malgorzata Olek, Witold Zukowski

Witold Zukowski

Tests on the burning sewage sludge so as to minimise the emissions of CO, NOx and dust are described. The fluidised bed process used sewage sludge with 50 - 80% of water together with wood chips. The results obtained indicate that the NOx concentration in the flue gases can be reduced by controlling the fuel/air ratio. The conditions can be optimised by using sufficiently high temperatures and keeping the CO concentration down. It is proposed that the quality of the operation of the installation should be assessed by means of a dimensionless parameter, the toxicity index and supporting evidence is …

Go to article

Small Scale Biomass Incinerator With A Bubbling Fluidised Bed. Ii. Combustion Of Feathers And Mbm, Jerzy Baron, Stanislaw Kandefer, Malgorzata Olek, Malgorzata Pilawska, Witold Zukowski Dec 2005

Small Scale Biomass Incinerator With A Bubbling Fluidised Bed. Ii. Combustion Of Feathers And Mbm, Jerzy Baron, Stanislaw Kandefer, Malgorzata Olek, Malgorzata Pilawska, Witold Zukowski

Witold Zukowski

The paper presents the results from a study of the combustion of wastes of animal origin - feathers and meat and bone meal in a 1.5 MW bubbling fluidised bed reactor. The process of thermal utili-sation is stable and short - term fluctuations on the composition of the wastes are not a problem, since the operational parameters of the combustor are constantly monitored and controlled. The process does not require conventional supporting fuel and the level of CO in the flue gases is com-parable to that observed with some low quality coals, but NOx and SO2 emissions are present, because …

Go to article

Distribution Of Heavy Metals Between Gas, Liquid And Solid Wastes From Sewage Sludge Combustion, Jerzy Baron, Witold Zukowski, Stanislaw Kandefer Dec 2005

Distribution Of Heavy Metals Between Gas, Liquid And Solid Wastes From Sewage Sludge Combustion, Jerzy Baron, Witold Zukowski, Stanislaw Kandefer

Witold Zukowski

Results are presented on the partitioning of metals between the different waste streams produced from the co-combustion of sewage sludge with wood chips in an installation with a bubbling fluidised be combustor, equipped with a flue gas cleaning system. The system consisted of a dust separator and two wet scrubbers in series. For selected metals, their concentrations were determined in the fuel and in the ashes as well as carried with the flue gas stream. Heavy metals were mostly found in the dust carried with the flue gases, either as vapours condensing on solid surfaces or present in the fines …

Go to article

“El Tribunal De Justicia De Las Comunidades Europeas Confirma La Validez Del Reglamento Nº 261/2004 (Compensación En Caso De Denegación De Embarque Y De Cancelación O Gran Retraso De Un Vuelo)”, Luis González Vaqué Dec 2005

“El Tribunal De Justicia De Las Comunidades Europeas Confirma La Validez Del Reglamento Nº 261/2004 (Compensación En Caso De Denegación De Embarque Y De Cancelación O Gran Retraso De Un Vuelo)”, Luis González Vaqué

Luis González Vaqué

The fact that the validity of a Community act is contested before a national court is not in itself sufficient to warrant referral of a question to the Court of Justice for a preliminary ruling.

Courts against whose decisions there is a judicial remedy under national law may examine the validity of a Community act and, if they consider that the arguments put forward before them by the parties in support of invalidity are unfounded, they may reject them, concluding that the act is completely valid, given that, in so doing, they are not calling into question the existence of …

Go to article

Mac Os X Forensics, Philip Craiger, Paul Burke Dec 2005

Mac Os X Forensics, Philip Craiger, Paul Burke

J. Philip Craiger, Ph.D.

This paper describes procedures for conducting forensic examinations of Apple Macs running Mac OS X. The target disk mode is used to create a forensic duplicate of a Mac hard drive and preview it. Procedures are discussed for recovering evidence from allocated space, unallocated space, slack space and virtual memory. Furthermore, procedures are described for recovering trace evidence from Mac OS X default email, web browser and instant messaging applications, as well as evidence pertaining to commands executed from a terminal.

Go to article

Assessing Trace Evidence Left By Secure Deletion Programs, Paul Burke, Philip Craiger Dec 2005

Assessing Trace Evidence Left By Secure Deletion Programs, Paul Burke, Philip Craiger

J. Philip Craiger, Ph.D.

Secure deletion programs purport to permanently erase files from digital media. These programs are used by businesses and individuals to remove sensitive information from media, and by criminals to remove evidence of the tools or fruits of illegal activities. This paper focuses on the trace evidence left by secure deletion programs. In particular, five Windows-based secure deletion programs are tested to determine if they leave identifiable signatures after deleting a file. The results show that the majority of the programs leave identifiable signatures. Moreover, some of the programs do not completely erase file metadata, which enables forensic investigators to extract …

Go to article

First Prev