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Topic Area: Polymers

Displaying records 41 to 50 of 547 records.
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41. Osteoblast Response to Serum Protein Adsorption in 3D Polymer Scaffolds
Topic: Polymers
Published: 5/1/2012
Authors: Carl George Simon Jr, Girish Kumar, Kaushik Chatterjee, Stevephen Hung
Abstract: Protein adsorption is known to direct biological response to biomaterials and is important in determining cellular response in tissue scaffolds. In this study we investigated the effect of adsorbed serum proteins on cell attachment and proliferation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909572

42. Nano-Apatitic Composite Scaffolds for Stem Cell Delivery and Bone Tissue Engineering
Topic: Polymers
Published: 4/15/2012
Authors: Hockin H. K. Xu, Carl George Simon Jr
Abstract: The need for bone defect repair and regeneration arises from trauma, disease, congenital deformity, and tumor resection. Bone fracture occurs to seven million people each year in the United States, and musculoskeletal conditions cost $215 billion ann ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904167

43. Photoiniated wrinkles with controlled morphology from a liquid coating on a rigid substrate: A facile route to tunable, periodic structures
Topic: Polymers
Published: 3/27/2012
Authors: Jessica M. Torres, Christopher M Stafford, Vogt D Bryan
Abstract: Periodic wrinkled surfaces have generated significant interest over the past decade as these structures can be easily fabricated over large areas with minimal fabrication cost, but these structures have been generally been limited to thin films on so ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910420

44. Relationship between Barrier Layer Tg and TFC Membrane Performance: Effect of Chlorine Treatment
Topic: Polymers
Published: 3/8/2012
Authors: Sajjad H. Maruf, Dae U. Ahn, John Pellegrino, Jason Philip Killgore, Alan R. Greenberg, Yifu Ding
Abstract: Thin film composite (TFC) reverse osmosis (RO) membranes play a significant role in addressing rapidly expanding global needs for potable water. A well-known problem of TFC membranes is their sensitivity to oxidizing agents such as chlorine, whi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910101

45. Freeform Fabricated Scaffolds with Roughened Struts that Enhance both Stem Cell Proliferation and Differentiation by Controlling Cell Shape
Topic: Polymers
Published: 3/1/2012
Authors: Girish Kumar, Carl George Simon Jr, Michael S. (Michael Stephan) Waters, Tanya M. Farooque, Marian F Young
Abstract: We demonstrate that imparting freeform fabricated (FFF) scaffolds with surface roughness on their struts enhances osteogenic differentiation of primary human bone marrow stromal cells (hBMSCs) by controlling cell shape. Previous work showed that hBM ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910664

46. A Robust and High-Throughput Measurement Platform for Monomer Reactivity Ratios from Surface-Initiated Polymerization
Topic: Polymers
Published: 2/23/2012
Authors: Kirt Anthony Page, Derek Patton, Emily Hoff, Michael J Fasolka, Kathryn L Beers
Abstract: This article describes a robust approach to measure monomer reactivity ratios from surface-initiated copolymerization, by measuring composition of statistical copolymer brush surfaces using x-ray photoelectron spectroscopy. Statistical copolymer br ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910460

47. Rippling Instability of Supported Polymer Nanolines
Topic: Polymers
Published: 2/21/2012
Authors: Vijaya R. Tirumala, Christopher M Stafford, Leonidas E. Ocola, Jack F Douglas, L. Mahadevan
Abstract: The swelling response of polymer line gratings supported on a rigid substrate has direct implications on their mechanical stability during pattern transfer in nanofabrication. The polymer lines, when swollen in a good solvent, undergo a rippling inst ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909469

48. Quantitative Measurements of the Size Scaling of Linear and Circular DNA in Nanofluidic Slitlike Confinement
Topic: Polymers
Published: 2/14/2012
Authors: Elizabeth A Strychalski, Jon C Geist, Michael Gaitan, Laurie E Locascio, Samuel M Stavis
Abstract: Quantitative size measurements of single linear and circular DNA molecules in nanofluidic slitlike confinement are reported. A novel experimental method using DNA entropophoresis down a nanofluidic staircase implemented comprehensive variation of sl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908052

49. DNA Molecules Descending a Nanofluidic Staircase by Entropophoresis
Topic: Polymers
Published: 1/26/2012
Authors: Samuel M Stavis, Jon C Geist, Michael Gaitan, Laurie E Locascio, Elizabeth A Strychalski
Abstract: A complex entropy gradient for confined DNA molecules was engineered for the first time. Following the second law of thermodynamics, this enabled the directed self-transport and self-concentration of DNA molecules. This new nanofluidic method is term ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908034

50. Automated Data Processing and Quantification in Polymer Mass Spectrometry
Topic: Polymers
Published: 12/1/2011
Authors: Till Gruendling, Christopher Barner-Kowollik, William E Wallace III, Charles Martin Guttman, Anthony J Kearsley
Abstract: An overview is given of some new techniques in quantitative composition and molecular mass distribution measurement of synthetic polymers by mass spectrometry. New concepts in data analysis, including peak picking and integration, are also described ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907901



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