The impact and recovery of asteroid 2018 LA.

The June 2, 2018, impact of asteroid 2018 LA over Botswana is only the second asteroid detected in space prior to impacting over land. Here, we report on the successful recovery of meteorites. Additional astrometric data refine the approach orbit and define the spin period and shape of the asteroid.

Detection of DNA damage in workers exposed to JP-8 jet fuel.

The genotoxicity of jet propulsion fuel 8 (JP-8) was assessed in the leukocytes of archived blood specimens from U.S. Air Force personnel using the comet assay.

Viruses and vitamin D in the etiology of type 1 diabetes mellitus and multiple sclerosis.

Although specific viruses have been associated with autoimmune diseases, none fulfill Koch's criteria of causation. The etiologies of such diseases appear to be complex and multifactorial. For example, one might propose that the etiology of type 1 diabetes mellitus results from a toxic metabolite of nitrosamines during an enteroviral infection.

(2-methoxyethoxy)acetic acid: a urinary biomarker of exposure for jet fuel JP-8.

Purpose: To demonstrate the utility of the urinary metabolite (2-methoxyethoxy)acetic acid (MEAA) as a biomarker of exposure. 2-(2-methoxyethoxy)ethanol [diethylene glycol monomethyl ether] is an anti-icing agent used in the formulation of JP-8, and it is added at a known uniform 0.1% (v/v) concentration to each batch lot.

Risky alcohol use, age at onset of drinking, and adverse childhood experiences in young men entering the US Marine Corps.

Objective: To examine how childhood experiences relate to risky underage drinking.

Design: A survey study of men starting military training between June 11, 2002, and April 5, 2006. Multivariate logistic regression models compared risky drinkers with "all others" or with nonrisky drinkers; excluding nondrinkers.

Dermal exposure to jet fuel (JP-8) in US Air Force personnel.

Limited research has been conducted on dermal exposure and risk assessment, owing to the lack of reliable measurement techniques and data for quantitative risk assessment. We investigated the magnitude of dermal exposure to jet propulsion fuel 8 (JP-8), using naphthalene as a surrogate, on the US Air Force fuel-cell maintenance workers. Dermal exposure of 124 workers routinely working with JP-8 was measured using a non-invasive tape-strip technique coupled with gas chromatography-mass spectrometry analysis.

Trends in positive drug tests, United States Air Force, fiscal years 1997-1999.

We investigated the relationship between various demographic factors and the risk of testing positive for marijuana or cocaine use in the U.S. Air Force in fiscal years 1997 through 1999.

Comparison of two sources of U.S. Air Force injury mortality data.

Is the military's casualty (mortality) reporting system a reliable surrogate for International Classification of Diseases-coded death certificate information? To answer this question, the investigators compare official casualty data to the Air Force Mortality Registry for injury-related deaths occurring in 1991-1997. The investigators first derived International Classification of Diseases, Ninth Revision and Supplementary Classification of External Causes of Injury and Poisoning (E) codes for each death from casualty data and then compared the precision of those codes with the registry's E codes derived and medically coded from death certificates and autopsy reports. Sixty-five percent of registry E codes were "precise" vs.

Myopericarditis following smallpox vaccination among vaccinia-naive US military personnel.

Context: In the United States, the annual incidence of myocarditis is estimated at 1 to 10 per 100,000 population. As many as 1% to 5% of patients with acute viral infections involve the myocardium. Although many viruses have been reported to cause myopericarditis, it has been a rare or unrecognized event after vaccination with the currently used strain of vaccinia virus (New York City Board of Health).