Publications by authors named "Kathleen Edwards"

Introduction: Black emerging adults (18-28 years) have the highest risk of short sleep duration and obesity. This increased risk may be partly explained by greater stress levels, which may result from race-related stress (racial discrimination and heightened race-related vigilance) or living in more disadvantaged home and neighbourhood environments. Insufficient sleep may also impact obesity risk via several weight-related mechanisms including energy balance, appetite and food reward, cortisol profiles and hydration status.

View Article and Find Full Text PDF

A unique approach is used to relate the HOMO-LUMO energy difference to the difference between the ionization potential (IP) and electron affinity (EA) to assist in deducing not only the colors, but also chromophores in elemental nonmetals. Our analysis focuses on compounds with lone pair electrons and σ electrons, namely X (X = F, Cl, Br, I), S and P . For the dihalogens, the [IP - EA] energies are found to be: F (12.

View Article and Find Full Text PDF

Orphan drug products (e.g. drugs and biologics) in the United States are those that treat people with rare chronic diseases, often cancer or metabolic disease.

View Article and Find Full Text PDF

Media multitasking refers to the simultaneous use of different forms of media. Previous research comparing heavy media multitaskers and light media multitaskers suggests that heavy media multitaskers have a broader scope of attention. The present study explored whether these differences in attentional scope would lead to a greater degree of implicit learning for heavy media multitaskers.

View Article and Find Full Text PDF

We discuss in the current paper ions containing solely fluorine atoms, F-, F2- and F3-, their corresponding cationic and/or multiply charged counterparts. While the emphasis of the paper is on gas phase species, their energetics and reactions, aqueous solutions are also discussed. In particular, biomedical and analytical aspects of F- are also considered.

View Article and Find Full Text PDF

Collision-induced dissociation Fourier Transform ion cyclotron resonance mass spectrometry (CID-FTICR MS) was developed to determine structural building blocks in heavy petroleum systems. Model compounds with both single core and multicore configurations were synthesized to study the fragmentation pattern and response factors in the CID reactions. Dealkylation is found to be the most prevalent reaction pathway in the CID.

View Article and Find Full Text PDF

Along with the development of a national voluntary accreditation program for public health departments that holds quality improvement as its core goal, the application of quality improvement in public health has been gaining momentum. The 16 states participating in the Multi-State Learning Collaborative: Lead States in Public Health Quality Improvement (MLC) represent best practices in these activities. The MLC brings together partnerships in 16 US states to prepare for accreditation and implement quality-improvement practices.

View Article and Find Full Text PDF

We report here the first high resolution mass spectrometric evidence of nickel porphyrins in petroleum. A petroleum asphaltene sample is fractionated by a silica-gel cyclograph. Nickel content is enriched by approximately 3 fold in one of the cyclograph fractions.

View Article and Find Full Text PDF

A miniature ion trap mass analyzer was applied to the analysis of traces of hydrocarbons and simple heteroatomics in the vapor phase and in aqueous solution. Vapors of acetone, acetic acid, acetonitrile, benzene, butanethiol, carbon disulfide, hexane, dichloromethane, naphthalene, toluene and xylenes were detected and quantified using solid sorbent trapping and, in some cases, by passage through a membrane interface. Aqueous solutions of benzene, toluene, xylenes, hexane and a petroleum naphtha distillate were examined using the membrane interface.

View Article and Find Full Text PDF

Vanadyl (VO) porphyrins and sulfur-containing vanadyl (VOS) porphyrins of a wide carbon number range (C(26) to C(52)) and Z-number range (-28 to -54) were detected and identified in a petroleum asphaltene by atmospheric pressure photonionization (APPI) and Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS). APPI provides soft ionization of asphaltene molecules (including VO and VOS porphyrins), generating primarily molecular ions (M(+.)).

View Article and Find Full Text PDF

We report a new method for rapid measurement of total acid number (TAN) and TAN boiling point (BP) distribution for petroleum crude and products. The technology is based on negative ion electrospray ionization mass spectrometry (ESI-MS) for selective ionization of petroleum acid and quantification of acid structures and molecular weight distributions. A chip-based nanoelectrospray system enables microscale (<200 mg) and higher throughput (20 samples/h) measurement.

View Article and Find Full Text PDF

A two-dimensional separation approach involving gas chromatography (GC) and Fourier transform infrared spectroscopy (FT-IR) is used to separate C2-naphthalene isomers at or near baseline resolution. In addition to GC separation, the FT-IR also plays an important role in the separation, as well as its traditional role of detection and identification. This two-dimensional separation approach for the analysis of a C2-naphthalene isomeric mixture is a good example of separation design based on molecular difference and the characteristics of an analytical instrument.

View Article and Find Full Text PDF

Autonomous detection systems (ADSs) are under development to detect agents of biologic and chemical terror in the environment. These systems will eventually be able to detect biologic and chemical hazards reliably and provide approximate real-time alerts that an agent is present. One type of ADS that tests specifically for Bacillus anthracis is being deployed in hundreds of postal distribution centers across the United States.

View Article and Find Full Text PDF

Quantitative performance indicators were developed to monitor immunization registry progress of the 16 All Kids Count (AKC) grantees. Results were reviewed to determine if (1) the indicators measured immunization registry progress, (2) the results could be compared across AKC projects, and (3) other immunization registries could use the indicators. The study found that the AKC performance indicators provide a useful template for registries to measure their progress toward developing fully mature registries.

View Article and Find Full Text PDF

Objectives: To determine the factors influencing human immunodeficiency virus postexposure prophylaxis (PEP) requests after "low-risk" occupational exposure.

Methods: We analyzed data from low-risk occupational exposures reported between January 1999 and May 2000.

Results: A total of 318 low-risk occupational exposures were reported.

View Article and Find Full Text PDF