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Biomedical subjects

L Vierling

Publications and source records attributed to L Vierling.

6 recordsLinked to original sources
PubMed1999

Biogenic volatile organic compound emissions (BVOCs). II. Landscape flux potentials from three continental sites in the U.S.

Landscape flux potentials for biogenic volatile organic compounds (BVOCs) were derived for three ecosystems in the continental U.S. (Fernbank Forest, Atlanta, GA; Willow Creek, Rhinelander, WI; Temple Ridge, CO). Analytical data from branch enclosure measurements were combined with ecological survey data for plant species composition and biomass. Other quantitative flux measurements at the leaf and landscape level were incorporated to scale the results from the enclosure measurements to the landscape level. Flux estimates were derived by using a one week ambient temperature and light record (30 min time resolution) and adjusting all emission rates to these conditions with temperature and light correction algorithms.

Colorado↗
PubMed1999

Biogenic volatile organic compound emissions (BVOCs). I. Identifications from three continental sites in the U.S.

Vegetation composition and biomass were surveyed for three specific sites in Atlanta, GA; near Rhinelander, WI; and near Hayden, CO. At each research site emissions of biogenic volatile organic compounds (BVOCs) from the dominant vegetation species were sampled by enclosing branches in bag enclosure systems and sampling the equilibrium head space onto multi-stage solid adsorbent cartridges. Analysis was performed using a thermal desorption technique with gas chromatography (GC) separation and mass spectrometry (MS) detection. Identification of BVOCs covering the GC retention index range (stationary phase DB-1) from approximately 400 to 1400 was achieved (volatilities C4-C14).

Air Pollution↗
PubMedDate not supplied

The Americans with Disabilities Act: implications of Supreme Court decisions for case managers.

The Supreme Court interpreted the application of the ADA to be based on an individualized evaluation of a person's circumstances. A full, objective vocational evaluation continues to be a valuable tool for the employee, insurance company, employer, attorney, and judicial system. Case managers must continually evaluate an individual's potential in light of his or her circumstances, not just the medical diagnosis.

Case Management↗
PubMedDate not supplied

Four components for an improved return-to-work program.

Today more than ever before, employees are working in an atmosphere of anxiety and stress. A fundamental and dynamic shift is taking place in the work world. Our economy is changing so rapidly that we no longer have definable career paths. Many have called this change the third revolution or tidal wave. Most experts have agreed, however, that the situation is a transformation from a producing economy to one of information or knowledge.

Accidents, Occupational↗