Engineering Commons^™

Application Of Air Foam Composite Directional Drilling Technology In Broken Soft Coal Seams, Liu Jianlin, Fang Jun, Chu Zhiwei, Yang Weifeng

Coal Geology & Exploration

In order to meet the requirements of air screw motor cooling and lubrication, coal dust removal treatment at the orifice and water outlet disposal in the air directional drilling, an air foam composite directional drilling technology for broken soft coal seams has been developed based on the analysis of drilling slag migration characteristics of air directional drilling. The key technologies such as stable and efficient foaming, "mechanical + foam" composite slag discharge and "air + foam" composite drilling were integrated. The technology was also equipped with directional drillrig, foam generation perfusion system, air screw motor, special-shaped drill pipe and measurement …

Cloth-Air Partitioning Of Oxybenzone, Jonathan T. Hill

Masters Theses

"Clothing has been proven to be a significant accumulator of chemicals from the air. Semi-volatile organic compounds (SVOCs) have a high affinity towards textiles, and measuring the equilibrium partition coefficient between cloth and air (K_cloth-air) for SVOCs is crucial in predicting human exposure to these compounds. This study aims to quantify K_cloth-air for oxybenzone to contribute to a larger human exposure experiment carried out at the Technical University of Denmark (DTU). K_cloth-air for oxybenzone was calculated using data collected from the exposure chamber at DTU and from performing extractions of oxybenzone in fabric samples from the …

Catechol Oxidation By Ozone And Hydroxyl Radicals At The Air-Water Interface, Elizabeth A. Pillar, Robert C. Camm, Marcelo I. Guzman

Chemistry Faculty Publications

Anthropogenic emissions of aromatic hydrocarbons promptly react with hydroxyl radicals undergoing oxidation to form phenols and polyphenols (e.g., catechol) typically identified in the complex mixture of humic-like substances (HULIS). Because further processing of polyphenols in secondary organic aerosols (SOA) can continue mediated by a mechanism of ozonolysis at interfaces, a better understanding about how these reactions proceed at the air–water interface is needed. This work shows how catechol, a molecular probe of the oxygenated aromatic hydrocarbons present in SOA, can contribute interfacial reactive species that enhance the production of HULIS under atmospheric conditions. Reactive semiquinone radicals are quickly produced upon …

Slides: Natural Gas: Game Changer Or Runner Left On Base? Working To Get It Right In Co!, Gary Graham

Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)

Presenter: Dr. Gary Graham, Director, Lands Program, Western Resource Advocates

21 slides

Slides: Oil Shale Water Use: Upsetting The Apple-Cart Of River Habitat, Irrigation And Existing Water Rights?, Bart Miller

Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)

Presenter: Bart Miller, Western Resource Advocates, Boulder, CO

13 slides

Coalbed Methane Development In Wyoming’S Powder River Basin, Diana Hulme

Coalbed Methane Development in the Intermountain West (April 4-5)

21 pages (includes color illustrations and maps).

Contains endnotes.

Natural Resources Damage Litigation [Appendix], Michael Donovan

Getting a Handle on Hazardous Waste Control (Summer Conference, June 9-10)

80 pages (includes illustrations).

Contains references and historical notes.

Appendix contains 3 attachments:

1) Comprehensive Environmental Response, Compensation and Liability Act, ("CERCLA"), 42 U.S.C. 9601 et seq. (1980)

2) National Contingency Plan, 40 C.F.R. Part 440, 50 Fed. Reg. No. 224, Part III (November 20, 1985)

3) Natural Resource Damage Assessments - Proposed Rule, Department of Interior, 43 C.F.R. Part 11, 50 Fed. Reg. No. 245, Part IV (December 20, 1985)