Bandera de Estados Unidos

Un sitio oficial del Gobierno de Estados Unidos, Departamento de Justicia.

Multimedia Listing

DNA 101

Agosto 2023

This training was presented as a part of the National Center on Forensics conference at George Mason University on August 8th, 2023. In this session, FBI Forensic DNA Examiner Amanda Bakker introduces all the most vital concepts of DNA analysis and evidence. For those who aren’t DNA analysts but work in tangential fields such as law enforcement and criminal justice, this session will be incredibly useful for understanding topics such as what DNA is, how it transfers, how it is collected, and how it is analyzed.

Cannabinoid Conundrums Webinar Series Expert Panel

Agosto 2023

As evident by the Cannabinoid Connundrums webinar series, the rapidly changing world of cannabinoids offers many conundrums. To tackle some of these questions, Dr. Ruth Winecker led a panel discussion with Dr. Ed Cone, Dr. Nathalie Desrosiers, Mr. Justin Poklis, and Mr. Nelson Santos. This diverse slate of thought leaders includes experts in analytical chemistry, forensic toxicology, clinical research, and drug chemistry. This webinar was hosted by the NIJ Forensic Technology Center of Excellence on August 3, 2023. 

Cannabinoid Pharmacology: Three Decades of Controlled Human Cannabinoid

Agosto 2023

Controlled drug administration studies are valuable tools for acquiring a detailed understanding of the pharmacodynamic and pharmacokinetic profiles of cannabinoids. ∆9-tetrahydrocannabinoid (THC) is the primary psychoactive cannabinoid in cannabis with the potential to negatively impact cognitive and psychomotor performance and workplace safety. These studies establish behavioral and subjective effect profiles while simultaneously collecting pharmacokinetics data.

Progressing from Evidence to Action

Julio 2023

A large body of research on crime and justice is available, yet it can take years for findings to influence practice in the field. During a recent panel at NIJ’s 2023 National Research Conference, researchers and practitioners shared ideas and discussed practical steps and promising new approaches to inspire change. Three guests join the show to continue their conversation: Dr. Tamara Herold, a senior advisor to NIJ, hosts Dr. Shon Barnes, the police chief of the Madison (Wisconsin) Police Department, and Dr.

Estimating Age of Death from Subadult Remains, Part 2

Julio 2023

The long-standing problem of estimating the age and sex of subadult skeletal remains has been significantly "solved" with the advances in understanding the growth and development patterns in the skeletons of young people. This is the second half of the conversation with Kyra Stull, an anthropologist and forensic researcher at University of Nevada, Reno, Danielle McLeod-Henning, a physical scientist at NIJ, host Jim Dawson. 

Vaping in the Weeds: The Merging of the E-cigarette and Cannabis Industries

Junio 2023

This presentation describes the nature of the merge of the e-cigarette and cannabis industries. Quality assurance issues as a result of the absence of regulation and oversight is described. Cases of self-reported adverse events and the challenges of cannabis product analysis are also discussed.

This webinar was hosted by the NIJ Forensic Technology Center of Excellence on June 29, 2023. 

Estimating Age of Death from Subadult Remains, Part 1

Junio 2023

The long-standing problem of estimating the age and sex of subadult skeletal remains has been significantly "solved" with the advances in understanding the growth and development patterns in the skeletons of young people. Kyra Stull, an anthropologist and forensic researcher at University of Nevada, Reno, and Danielle McLeod-Henning, a physical scientist at NIJ, share more about this research with NIJ writer and host Jim Dawson.

Development of Analytical Methods for Measuring Δ9 THC in Cannabis Products

Junio 2023

With the passage of the 2018 Agricultural Improvement Act (Farm Bill), forensic laboratories have been tasked with differentiating seized cannabis samples as either hemp or marijuana. The new legislation declassified hemp as a Schedule 1 drug substance and defined it as cannabis containing 0.3 % or less of decarboxylated-Δ9-THC (total Δ9-THC). The National Institute of Standards and Technology (NIST) has been working to help forensic laboratories with these challenging measurements through the development of extraction protocols and analytical methods.

All Is Not Pot That’s Green: An Overview of THC Isomers

Junio 2023

THC isomers, also known as THC analogs or semi-synthetic cannabinoids, are structurally related to Δ9-tetrahydrocannabinol (Δ9-THC) and have similar toxicity and impairing effects. A recent study indicated that Δ8-THC use was around 27% of marijuana use, based on detection and ratios of cannabinoid metabolites in workplace drug testing. Other analogs of interest include hexahydrocannabinol (HHC) and THC-O. THC isomers are generally perceived as legal and are also seen in states with legal marijuana.

Driving Down Gun Violence, Part 2

Junio 2023

Three LEADS Scholars serving in different law enforcement agencies and positions discuss their experiences with identifying and implementing evidence-based interventions to reduce gun violence. NIJ Senior Advisor Dr. Tamara Herold hosts this conversation with guests Police Chief Cecilia Ashe (Milford Delaware Police Department), Chief of Staff Lieutenant Matthew Barter (Manchester, NH Police Department), and Analytical Services Manager Mr. Jason Schiess (Durham, NC Police Department).

Driving Down Gun Violence, Part 1

Mayo 2023

Three LEADS Scholars serving in different law enforcement agencies and positions discuss their experiences with identifying and implementing evidence-based interventions to reduce gun violence. NIJ Senior Advisor Dr. Tamara Herold hosts this conversation with guests Police Chief Cecilia Ashe (Milford Delaware Police Department), Chief of Staff Lieutenant Matthew Barter (Manchester, NH Police Department), and Analytical Services Manager Mr. Jason Schiess (Durham, NC Police Department). 

Vaping: It's Not What You Think

Mayo 2023
Vaping has grown in popularity as an alternative to cigarettes, but like its predecessor, vaping brings many health complications to consumers. Thanks to the persistence of researchers like Dr. Michelle Peace, these once unknown dangers have been brought to light. Dr. Peace, a tenured Associate Professor and founding member of VCU’s Department of Forensic Science, joins host and NIJ Scientist Dr. Frances Scott to discuss the history and science of vaping and what it does to our bodies.

Low Prosecution Rates in Sexual Assault Cases: Can We Make Sustainable Improvements?

Abril 2023

Dr. Julie L. Valentine provides background information on the challenges in tracking prosecution outcomes in sexual assault cases of adult victims. Research utilizing the National Institute of Justice Sexual Assault Nurse Examiner Practitioner Toolkit in two Utah counties is presented. Variables predicting prosecution are be explored. Participants are invited to consider societal, structural, and legislative barriers to prosecution of adult sexual assault cases faced in their jurisdiction to encourage multidisciplinary collaboration.