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Topic Area: Life Sciences Research

Displaying records 1 to 10 of 241 records.
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1. Remote sensing of chiral signatures on Mars
Topic: Life Sciences Research
Published: 11/1/2012
Authors: William Sparks, James H. Hough, Thomas Avery Germer, Frank Robb, Ludmilla Kolokolova
Abstract: We describe circular polarization as a remote sensing diagnostic of chiral signatures which may be applied to Mars. The remarkable phenomenon of homochirality provides a unique biosignature which can be amenable to remote sensing through circular ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910692

2. GENERATING CELL CO-CULTURES BY RAPID CELL ADHESION ON OPPOSITE SIDES OF POLYESTER MEMBRANES
Topic: Life Sciences Research
Published: 10/28/2012
Authors: Conni Hanke, Petra S. Dittrich, Darwin R Reyes-Hernandez
Abstract: A cell co-culture was generated on opposite sides of a permeable polyester membrane (PET) membrane by combining dielectrophoretic (DEP) and electrostatic forces to hold cells against gravity in a multilayer microfluidic device (Figure 1). HepG2 cell ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911771

3. A New Measure in Cell Image Segmentation Data Analysis
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7871
Topic: Life Sciences Research
Published: 7/24/2012
Authors: Jin Chu Wu, Michael W Halter, Raghu N Kacker, John T Elliott
Abstract: Cell image segmentation (CIS) is critical for quantitative imaging in cytometric analyses. The data derived after segmentation can be used to infer cellular function. To evaluate CIS algorithms, first for dealing with comparisons of single cells trea ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911671

4. Fabrication of Microelectrodes on Polyester Membranes for Dielectrophoretic Cell Capture
Topic: Life Sciences Research
Published: 6/18/2012
Authors: Conni Hanke, Petra S. Dittrich, Darwin R Reyes-Hernandez
Abstract: We present a new system for cell capturing on permeable polyester (PET) membranes using dielectrophoretic forces. For the first time gold microelectrodes were fabricated on PET membranes using conventional photolithographic techniques. Their charac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911140

5. Challenges in Microbial Sampling in the Indoor Environment
Series: Technical Note (NIST TN)
Report Number: 1737
Topic: Life Sciences Research
Published: 3/1/2012
Authors: Jayne B Morrow, Autumn Sara Downey, Jordan Peccia
Abstract: This report summarizes the results of the Challenges in Microbial Sampling in the Indoor Environment Workshop held on February 14-15, 2011 at the National Institute of Standards and Technology in Gaithersburg, Maryland.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910577

6. Segmentation and Cell Tracking of Breast Cancer Cells
Topic: Life Sciences Research
Published: 9/26/2011
Authors: Adele P Peskin, Daniel J. Hoeppner, Christina H. Stuelten
Abstract: We describe a new technique to segment and track the cell images of a breast cancer cell line in order to study cell migration and metastasis. Within each image cell phenotypes vary widely, ranging from very bright completely bounded cells to barely ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908649

7. Combinatorial Screening of Hydrogel Scaffolds for 3D Cell Culture
Topic: Life Sciences Research
Published: 5/2/2011
Authors: Kaushik Chatterjee, Marian F Young, Carl GEORGE Simon Jr
Abstract: Optimizing cell-material interactions is critical towards maximizing regeneration in tissue engineering. Combinatorial and high-throughput (CHT) methods can be used to systematically screen tissue scaffolds to identify optimal biomaterial properties ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903763

8. Loss of 45 Da from a2 Ions and Preferential Loss of 48 Da from a2 Ions Containing Methionine in Peptide Ion Tandem Mass Spectra
Topic: Life Sciences Research
Published: 1/29/2011
Authors: Yamil Simon, Pedatsur Neta, Xiaoyu Yang, Stephen E Stein
Abstract: While analyzing tandem mass spectra of tryptic tripeptides, intense unassigned peaks were observed, which correspond to a neutral loss of 45 Da from a^d2^ ions. From exact mass analysis this loss is ascribed to formamide (or NH^d3^+CO). Elimination o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906270

9. Detection of Heteroplasmic Mitochondrial DNA in Single Mitochondria
Topic: Life Sciences Research
Published: 12/17/2010
Authors: Joseph Earl Reiner, Rani Kishore, Barbara C. Levin, Thomas Albanetti, Nicholas Boire, Ashley Knipe, Kristian Helmerson, Koren Deckman
Abstract: Background Mitochondrial DNA (mtDNA) genome mutations can lead to energy and respiratory-related disorders like myoclonic epilepsy with ragged red fiber disease (MERRF), mitochondrial myopathy, encephalopathy, lactic acidosis and stroke (MELAS) synd ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904019

10. Melting Point Equations for the Ternary System Water/Sodium Chloride/Ethylene Glycol Revisited
Topic: Life Sciences Research
Published: 12/1/2010
Authors: James D. Benson, Aniruddha Bagchi, Xu Han, John K Critser, Erik J Woods
Abstract: Partial phase diagrams are of considerable utility in the development of optimized cryobiological procedures. Recent theoretical predictions of the melting points of ternary solutions of interest to cryobiology have caused us to re-examine measurment ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905323