Guidebook to Creating a Collaborative Environment Between Airport Operations and Maintenance

ACRP Report 92: Guidebook to Creating a Collaborative Environment Between Airport Operations and Maintenance provides tools and strategies that can be used to increase and improve collaboration between operations and maintenance staffs at airports. The tools include exercises, case studies, and other resources. The report also provides methods to identify warning signs of collaboration issues between operations and maintenance staffs. This guidebook will be useful to front-line supervisors, managers, or senior leaders who wish to increase or improve collaboration between operations and maintenance departments. The tools and strategies are applicable to be applied with other departments as well

Report to Congress on Server and Data Center Energy Efficiency: Public Law 109-431: Appendices

This report is the appendices to a companion report, prepared in response to the request from Congress stated in Public Law 109-431 (H.R. 5646),"An Act to Study and Promote the Use of Energy Efficient Computer Servers in the United States." This report assesses current trends in energy use and energy costs of data centers and servers in the U.S. (especially Federal government facilities) and outlines existing and emerging opportunities for improved energy efficiency. It also makes recommendations for pursuing these energy-efficiency opportunities broadly across the country through the use of information and incentive-based programs

Report to Congress on Server and Data Center Energy Efficiency: Public Law 109-431: Appendices

This report is the appendices to a companion report, prepared in response to the request from Congress stated in Public Law 109-431 (H.R. 5646),"An Act to Study and Promote the Use of Energy Efficient Computer Servers in the United States." This report assesses current trends in energy use and energy costs of data centers and servers in the U.S. (especially Federal government facilities) and outlines existing and emerging opportunities for improved energy efficiency. It also makes recommendations for pursuing these energy-efficiency opportunities broadly across the country through the use of information and incentive-based programs

Comparison of Ceria Nanoparticle Concentrations in Effluent from Chemical Mechanical Polishing of Silicon Dioxide

This work measured and compared the effluent from the chemical mechanical polishing (CMP) of silicon dioxide using ceria slurry and ceria fixed abrasive. CMP waste streams were tested for total solids, cerium, silicon, and 6 nm to 20 μm diameter particles. The concentration of cerium and total solids in the effluent were very different for the two polishes studied. The fixed abrasive polish produced 94% less CeO₂ emissions per SiO₂ removed. The higher ceria levels in the slurry effluent are associated with 99–279 nm particles, and attributed to ceria abrasive. The lower concentration of ceria in the effluent from the fixed abrasive process is due to the lower wear rate of mineral from the fixed abrasive, compared to the more environmentally mobile mineral in the slurry. These results support the “bonded” nature of the abrasive particles in fixed abrasive polishing and are relevant to sustainability strategies that seek to reduce particle emissions in surface conditioning technology