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Topic Area: Environment/Climate

Displaying records 31 to 40 of 420 records.
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31. Proposal for a standardized test artifact for additive manufacturing machines and processes
Topic: Environment/Climate
Published: 8/15/2012
Authors: Shawn P Moylan, John A Slotwinski, April Lynne Cooke, Kevin K Jurrens, M Alkan Donmez
Abstract: Historically, standardized test parts are used to quantitatively evaluate the performance of a machine or process. While several different additive manufacturing (AM) test parts have been developed in the past, there are no current standard test par ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911953

32. Characterization of Surface Accumulation and Release of Nanosilica During Irradiation of Polymer Nanocomposites with Ultraviolet Light
Topic: Environment/Climate
Published: 8/12/2012
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Savelas A Rabb, Paul E Stutzman, Justin M Gorham, Xiaohong Gu, Lee Lijian Yu, Joannie W Chin
Abstract: Nanofillers are increasingly used for enhancing multiple properties of polymeric materials in many applications. However, polymers are susceptible to photodegradation by solar ultraviolet (UV) radiation Therefore, nanofillers in a polymer nanocompos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909878

33. Properties of Metal Powders for Additive Manufacturing: A Review of the State of the Art of Metal Powder Property Testing
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7873
Topic: Environment/Climate
Published: 8/3/2012
Authors: April Lynne Cooke, John A Slotwinski
Abstract: This report investigates the current state-of-the-art methods for determining the properties of metal powders. This assessment evaluates both existing standards that provide guidance for powder property measurement methods, as well as technical p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911339

34. A Phosphine Sub Atmospheric Delivery System (SADS) applied to Low Pressure Chemical Vapor Deposition (LPCVD) of in situ doped Polysilicon.
Topic: Environment/Climate
Published: 7/23/2012
Authors: Vincent K Luciani, William D Young Jr, Lei Chen, Jerry L Bowser
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911015

35. The winter time South Pole tropospheric water vapor column: Comparisons of radiosonde and recent terahertz radiometry, use of the saturated column as a proxy measurement; and inference of decadal trends
Topic: Environment/Climate
Published: 7/7/2012
Authors: Richard Addison Chamberlin, Erich N Grossman
Abstract: We use a fifty year record of winter time radiosonde observations at the South Pole to estimate the precipitable water vapor column (PWV) over the entire period. Humidity data from older radiosondes is of limited reliability; however, we think an est ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910876

36. Innovative Approach to Rapid Growth of Highly Clay-Filled Coatings on Porous Polyurethane Foam
Topic: Environment/Climate
Published: 6/11/2012
Authors: Yeon Seok Kim, Richard H. Harris Jr., Rick D Davis
Abstract: : An innovative twist to fabricating layer-by-layer coatings resulted in transparent, high-content clay coatings on porous polyurethane foam. The addition of an anionic poly(acrylic acid) (PAA) monolayer between anionic clay and cationic branched-pol ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909751

37. Analysis of Orthogonal Cutting Experiments Using Diamond-Coated Tools with Force and Temperature Measurements
Topic: Environment/Climate
Published: 6/8/2012
Authors: Robert W Ivester, Eric Paul Whitenton, Jill Hershman, Kevin Chou, Qiang Wu
Abstract: Two dimensional (2D) orthogonal cutting experiments using diamond-coated tools were conducted with forces and tool-tip temperatures measured by dynamometry and infrared thermography, respectively. The objective of this study is to analyze cutting par ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910911

38. A systematic approach to the study of accelerated weathering in building joint sealants
Topic: Environment/Climate
Published: 5/1/2012
Authors: Christopher C White, Donald Lee Hunston, Kar Tean Tan, James J Filliben
Abstract: An accurate service life prediction model is urgently needed for building joint sealants to reduce the enormous cost associated with long-term field weathering. A stepping stone to the success of this effort is the precise control of environmental va ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908740

39. Measurements, Standards, and Data In Support of Sustainable Materials and Materials-Related Technologies
Topic: Environment/Climate
Published: 4/1/2012
Authors: Dianne L Poster, Michael J Fasolka, Richard R Cavanagh, Ellyn S. Beary
Abstract: Industry is increasingly aware that sustainability combines environmental, societal, and economic considerations in product development and that this linkage, while driving improved performance, can pose both a business opportunity and a challenge. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909308

40. Evaluation of Fusion Methods for Latent Fingerprint Matchers
Topic: Environment/Climate
Published: 3/29/2012
Author: Vladimir N Dvornychenko
Abstract: Matcher fusion is a recognized approach for improving biometric system performance. Our interest in fusion was largely to determine how much performance ,headroomŠ exists with current matcher technology. We employed five latent fingerprint matchers, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910369



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