Indoor air quality research continues to grow substantially over the last several years. Most research prior to the 2010’s was focused on outdoor emission sources, rather than the indoor air; with people spending almost 90% of their indoors, indoor air quality has a severe impact on people’s health. A specifically problematic aspect air monitoring within […]
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April Snyder, Construction Materials Laboratory Manager & Senior Concrete Petrographer at RJ Lee Group, is featured in October’s Empowering Women issue of Modern Counsel magazine. Performing petrographic analysis with the company since 1997, Ms. Snyder is a well-known subject matter expert in concrete circles, and was the first female to be elected president of an […]
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On Friday, June 21, 2019 at 4:00 a.m., a massive series of explosions erupted on a South Philadelphia refinery complex. According to the Philadelphia Fire Department, a vat of butane had ignited and eventually exploded. The fire caused a thick cloud of smoke to cover the neighboring areas, particularly concentrated east of the refinery. RJ […]
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Tarah Helsel, RJ Lee Group trace evidence analyst and gunshot residue (GSR) expert, recently testified in a Bermuda murder case. After explaining to the courtroom that lead, barium, and antimony are fused together and released in a cloud when the firearm is discharged, Ms. Helsel went on to clarify that these particles can also be […]
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The quality of powder feedstock can impact the quality of the parts built during the additive manufacturing process. Products may be contaminated by their environment during manufacturing, handling, or even during the building process. Because additive manufacturing is prevalent in high-performance industries, such as aerospace, medical, power generation and the military, it is crucial to […]
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Themis, RJ Lee Group’s Laboratory Information Management System (LIMS), has been successfully implemented by the ANAB certified Alaska State Department of Public Safety Scientific Crime Detection Laboratory (SCDL) fulfilling a number of needs that were historically handled with spreadsheets and other manual workflows. We recently talked with Orin Dym, Forensic Crime Lab Chief, to learn […]
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We are pleased to announce a new initiative by the experts at RJ Lee Group that conveys important material information to our readers in concise, focused resource articles. Every three weeks, our scientists will publish a new topic relating to their field of expertise as a Materials Insights article. Matthew J. Perricone, Ph.D., Principal Investigator and […]
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NASA has posted details of an International Space Station (ISS) experiment conducted by Marit Meyers, Ph.D., NASA Glenn Research Center, using the TPS100 aerosol samplers developed by RJ Lee Group. The experiment involves using the samplers to collect airborne particles from the cabin air of the ISS, then returning them to Earth so scientists can […]
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RJ Lee Group’s Eric Giannini presented at the 2018 spring meeting of RILEM TC 258-AAA on recent and current research activities in the United States on autoclave methods for alkali-silica reaction (ASR) potential of concrete aggregates. The research builds upon work performed primarily in Canada and Japan during the 1980s and 1990s, and includes both […]
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