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The Particle Articles

Value of Presumptive Screening of Physical Evidence Q&A Recap

[fa icon="calendar'] May 7, 2013 11:25:02 AM / by Admin posted in Blog, forensic analysis, Forensics, gunshot residue, microscopic analysis, physical evidence, presumptive screening, trace evidence, Trace Evidence

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On April 30th, Dave Exline, Senior V.P. and Cara Plese, M.S., Scientist I at Gateway Analytical hosted a webinar designed for police and attorneys involved in cases with physical evidence. During this webinar, our presenters discussed the advantages of microscopic and presumptive screenings of physical evidence, especially suspected bodily fluid stains and hair prior to advancing to more expensive DNA analysis. They also provide examples of such screenings and discussed how these screening methods can save valuable time, money and resources by eliminating samples from being forwarded onto unnecessary further analysis.

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AAFS 2013 Presenataion: What Judges and Lawyers Need to Know about the Science Behind Trace Evidence

[fa icon="calendar'] Mar 4, 2013 10:01:15 AM / by Admin posted in AAFS 2013, Blog, crime scene investigation, forensic expert, forensic science, forensic scientists, Forensics, forensics, trace evidence, Trace Evidence

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Gateway Analytical scientists Cara Plese and Antonio Scatena recently presented at the 2013 AAFS Annual Meeting in Washington DC. The presentation titled: "What Judges and Lawyers Need to Know about the Science Behind Trace Evidence" is now available for download.

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Gateway Analytical to Present in Jurisprudence Section at AAFS 2013

[fa icon="calendar'] Feb 5, 2013 2:34:46 PM / by Cara Plese posted in 2013 AAFS Annual Meeting, Blog, forensic expert, Forensics, forensics, scientific methods, trace evidence, Trace Evidence

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Gateway Analytical is very excited to be presenting at the 2013 AAFS Annual Meeting in Washington DC this year!  Cara Plese and Antonio Scatena will be presenting “What Judges and Lawyers Need to Know about the Science Behind Trace Evidence” on Friday, February 22nd at 10:40am.  As our presentation date is quickly approaching, we wanted to give a short summary of what attendees should expect.

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Gateway Analytical Achieves the Prestigious ASCLD/LAB-International Accreditation for Forensic Trace Evidence Testing!

[fa icon="calendar'] Nov 27, 2012 2:12:37 PM / by Tricia Wood posted in ASCLD/LAB accreditation, ASCLD/LAB-International accreditation, Blog, forensic expert, Forensics, forensics, GSR analysis, gunshot residue analysis, ISO 17025, quality assurance, quality control, trace evidence, Trace Evidence

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We are now one (1) of only two (2) private labs in the country that is accredited to this standard for trace evidence, and we are the only private lab in the country to be accredited for gunshot residue analysis.

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What Lawyers and Judges Need to Known about the Science behind Trace Evidence Examination

[fa icon="calendar'] Nov 15, 2012 11:00:30 AM / by Admin posted in Blog, Evidence Transfer, forensic investigations, forensic science, Forensics, Scientific Method, trace evidence, Trace Evidence Examination, Trace Evidence, Upcoming Events

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At the upcoming AAFS Annual Meeting, which is being held on February 18-23, 2013 in Washington, DC, Gateway Analytical will be giving a presentation on "What Lawyers and Judges Need to Known about the Science behind Trace Evidence Examination". Authored by Cara Plese, Antonio Scatena, and David Exline this presentation will help attendees gain a general introduction and exposure to the scientific method employed in the analysis of trace evidence, as well as the conclusions that can be expected from the various types of trace evidence examinations.

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Trace Analysis by Infrared and Raman Spectroscopy

[fa icon="calendar'] Oct 2, 2012 9:58:46 AM / by Admin posted in Blog, forensic expert, Forensics, forensics, Forensic Webinar Recordings, FTIR, Optical Microscopy, Raman, trace evidence analysis, Trace Evidence, Recorded Webinars

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On October 24, 2012Forensic Magazine and Bruker will be hosting a webinar on the topic of "Trace Analysis by Infrared and Raman Spectroscopy".

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Course Review - Manufacturing & Testing of PSA Tapes

[fa icon="calendar'] Sep 20, 2012 12:00:58 PM / by Rebekah Byrne posted in Blog, Forensics, Trace Evidence

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Trace evidence encompasses a number of possible sample types, from fibers to hairs to gunshot residue.  One of the commonly encountered types of trace evidence is tape evidence.  In order to properly understand tape from a trace evidence perspective, it is helpful to understand the manufacture process of the product.

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Webinar Recap: Forensic Analysis of Paint and Tapes for Police & Attorneys

[fa icon="calendar'] Aug 22, 2012 11:00:36 AM / by Admin posted in Blog, crime scene investigation, forensic expert, Forensics, forensics, paint analysis, tape analysis, trace evidence, Trace Evidence

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On August 8th, David Exline, Senior V.P. & Court-Qualified Trace Evidence Expert and Rebekah Wagurak, Forensic Scientist at Gateway Analytical presented a webinar that covers the forensic investigation process for paint and tape evidence. Topics include the most current methods used for today’s investigators and discuss the interpretation of paint transfer evidence. Case studies related to the analysis of duct tapes, automotive and architectural paints were also discussed.

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Acquisition of Third SEM-EDS System will be Used Exclusively for the Analysis of Forensic Gunshot Residue Evidence

[fa icon="calendar'] Jul 13, 2012 10:40:21 AM / by Rebekah Byrne posted in Blog, crime scene investigation, energy dispersive spectroscopy, forensic expert, Forensics, forensics, GSR analysis, gunshot residue analysis, Gunshot Residue Evidence, scanning electron microscope, trace evidence, Trace Evidence, sem-eds

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SEM image of a GSR particle coupled with the EDS spectrum of its elemental composition
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Webinar Recap: Forensic Analysis of Condom Lubricants for Police & Attorneys

[fa icon="calendar'] Jun 15, 2012 1:38:54 PM / by Admin posted in Blog, Forensics, Trace Evidence

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Recently, Gateway Analytical scientists Cara Plese and Antonio Scatena presented a half hour webinar focused on the forensic analysis of condom lubricants. The webinar covered the collection, documentation, and investigative value of condom lubricants and sexual assault evidence along with discussing the scientific principles and current methods of condom lubricant analysis.

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