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| Gunshot Residue Plume Study of Suspected Murder Weapon A woman, suspected of shooting and killing her father, was charged with murder by the F.B.I. RJ Lee Group (RJLG) was contracted to perform gunshot residue (GSR) analysis of the suspect's hands and clothing as well as perform a test firing of the suspected murder weapon to study the plume distribution of GSR. The scanning electron microscopy (SEM) analysis demonstrated that the distribution of GSR from the defendant was consistent with the distribution of the weapon in the test firing. This analysis was critical to the prosecution's case. |
| High Resolution Imaging and Consultation for Pharmaceutical Company Designing New Antineoplastic Agent RJLG provided high resolution imaging of nanoparticle core sizes for a new antineoplastic drug complex in the design stage. Hitachi, FEI, JEOL, and Tescan scanning electron microscopes (SEM) were used to gain insight into the morphology of the particles, their agglomeration tendencies, and surface characteristics. The client used this information in its research and development to inform the design and formulation of the drug. |
| Identification and Sourcing of Contaminants in Automotive Power Steering Assemblies For hydraulically actuated components such as power steering assemblies, minimal particle contamination is essential to the safe operation and life of the end product. RJ Lee Group (RJLG)assisted a leading automotive manufacturer in addressing particle cleanliness levels of power steering systems through the employment of scanning electron microscopy (SEM) in the analysis of particle product "rinse" samples. Using CCSEM techniques, information pertaining to the size, aspect ratio, and elemental chemistry was obtained for over 1000 particles. These data was used by our client to evaluate the product assembly line for possible upgrades and product improvements. |
| Indoor Air / Environmental Testing for a Major New York Teaching Hospital RJ Lee Group (RJLG) was called upon to evaluate odor and fume in a New York Medical Center. This work was initiated following employee health complaints. Also, a complaint was issued to OSHA. RJLG performed the following tasks: - Site walkthrough - Employee interviews - Personal air testing (Dosimetry) - Review of engineering plans The lab analysis revealed low levels of diesel fuel and jet fuel. A presentation was made to the hospital staff presenting remedial actions to be taken. |
| Material Failure Analysis of Baby Crib Gate Component RJ Lee Group investigated the cause of failing gates on baby cribs. Using FTIR, RJLG scientists determined that the polymer specified in the original design for the washer used in the baby crib gate had been substituted during assembly for a washer of less stable material. When stressed, the substituted material caused the gates to sag and open spontaneously. As a result of RJLG's investigation, the manufacturer modified the product design and placed more stringent controls on the procurement of raw materials. |
