Elephant Notes and News

Orientadora : Salete Kozel TeixeiraContém como anexo CD-ROM constituído de fotos e filmagensDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciencias da Terra, Programa de Pós-Graduaçao em Geografia. Defesa: Curitiba, 2007Inclui bibliografia e anexo

Workshop on oiled seabird cleaning and rehabilitation : proceedings of a workshop held in Townsville, Australia, 26 February 1991

This report is a summary of the proceedings from the Oiled Seabird Cleaning and Rehabilitation Workshop, the first in Queensland to address this issue. It is hoped that more workshops will be held in the future.Table of Contents: Dr Wendy Craik, Seabird Cleaning and Rehabilitation in the Great Barrier Reef Marine Park 17; Mr Terry Walker, Seabird Distribution on the Great Barrier Reef 24; Dr Peter Dann and Dr Ros Jessop, The Effect of Oil on Birds 37; Ms Erna Walraven and Mr Larry Vogelnest, Emergency Care for Birds at Lake Liddell Oil Spill 44; Mr Peter Brookhouse, Management of Wildlife Operations 49; and Material Submitted: Dr Geoffrey Smith, Rescuing Oiled Seabirds 61

Workshop on the use of bioremediation for oil spill response in the Great Barrier Reef Region : proceedings of a workshop held in Townsville, Australia, 25 February 1991

The intensity of shipping within the Great Barrier Reef presents a very real threat to the’ Reef from oil spills. In response to this threat, the Great Barrier Reef Marine Park Authority and the Commonwealth Department of Transport and Communications have developed REEFPLAN, the marine pollution contingency plan for the Great Barrier Reef Region. As of 1 January 1991, the role of the Department of Transport and Communications under REEFPLAN has been taken over by the Australian Maritime Safety Authority.Table of Contents: Papers Presented: Dr Wendy Craik, Bioremediation in the Great Barrier Reef Marine Park 15; Dr Riehard Edgehill, Bioremediation - The Biological, Physical, and Chemical Bases 20; Dr Bruce Kelley and Mr Stuart Rhodes, Bioremediation of Industrial Wastes 26; Ms Randi Larson, Research into Bioremediation of Oil and Related Compounds in Australia 32; Prof. Paul Greenfield, Bioremediation Applications in the Great Barrier Reef Marine Park 41; Dr Alan Sheehy, Bioremediation of Oil Spills 45; Mr Locon Wall, The Exxon Valdez Oil Spill - Woodward-Clyde Consultants' Contributions to Bioremediation 48; Papers Submitted: American Society for Microbiology, Biodegradation of Oil in the Open Ocean 53; and Ms Rebecca Hoff Bioremediation for Oil Spills - Update 55

Copper vapor laser drilling of copper, iron, and titanium foils in atmospheric pressure air and argon

A copper vapor laser (511 and 578 nm) is used to drill submillimeter diameter holes in 0.025–0.127 mm thick foils of copper, iron, and titanium. Foils are machined in atmospheric pressure air and argon. The laser is repetitively pulsed at 10 kHz with a per pulse energy of 0.5 mJ giving an average power of 5 W at the sample surface for a pulse width of 40 ns. A p‐i‐n photodiode and a photomultiplier tube detector are connected to a digital‐display timing circuit that records the number of incident laser pulses used to drill through the sample. The number of pulses is converted to an average drilling time and can provide an estimate for the average laser energy used to drill the hole. Typical data for all three materials with a per‐pulse fluence of 0.7 J/cm2 ranged from 0.1 to 500 s to produce holes of ∼0.3 mm diameter. Drilling times decreased in some cases by an order of magnitude when machining in air. This is attributed to the increased laser absorption of the metal‐oxide layer formed in air and was especially noticeable with titanium. A continuous wave thermal model is used to compare experimental data as well as verify the thermal machining mechanism.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69638/2/RSINAK-64-11-3308-1.pd

Predicting mobility using limited data during early stages of a pandemic

The COVID-19 pandemic has changed consumer behavior substantially. In this study, we explore the drivers of consumer mobility in several metropolitan areas in the United States under the perceived risks of COVID-19. We capture multiple dimensions of perceived risk using local and national cases and death counts of COVID-19, along with real-time Google Trends data for personal protective equipment (PPE). While Google Trends data are popular inputs in many studies, the risk of multicollinearity escalates with the addition of more relevant terms. Therefore, multicollinearity-alleviating methods are needed to appropriately leverage information provided by Google Trends data. We develop and utilize a novel optimization scheme to induce linear models containing strictly significant covariates and minimal multicollinearity. We find that there are a variety of unique factors that drive mobility in different geographic locations, as well as several factors that are common to all locations