Publications by authors named "P H McFarland"

Atmospheric electrical discharges are now known to generate unexpectedly large amounts of the atmosphere's primary oxidant, hydroxyl (OH), in thunderstorm anvils, where electrical discharges are caused by atmospheric charge separation. The question is "Do other electrical discharges also generate large amounts of oxidants?" In this paper, we demonstrate that corona formed on grounded metal objects under thunderstorms produce extreme amounts of OH, hydroperoxyl (HO), and ozone (O). Hundreds of parts per trillion to parts per billion of OH and HO were measured during seven thunderstorms that passed over the rooftop site during an air quality study in Houston, TX in summer 2006.

View Article and Find Full Text PDF

Lightning increases the atmosphere's ability to cleanse itself by producing nitric oxide (NO), leading to atmospheric chemistry that forms ozone (O) and the atmosphere's primary oxidant, the hydroxyl radical (OH). Our analysis of a 2012 airborne study of deep convection and chemistry demonstrates that lightning also directly generates the oxidants OH and the hydroperoxyl radical (HO). Extreme amounts of OH and HO were discovered and linked to visible flashes occurring in front of the aircraft and to subvisible discharges in electrified anvil regions.

View Article and Find Full Text PDF

Proper food safety training is essential to decrease incidences and overall rates of foodborne illnesses and outbreaks. Though many commercial restaurants should provide proper food safety training to food handler employees, this training is not always offered or effective. Here, we summarize the results of a primary literature study concerning the effectiveness of food safety training in commercial settings.

View Article and Find Full Text PDF

The California Association of Colleges of Nursing (CACN) is a not-for-profit, non-partisan nursing organization whose members are the universities' Schools of Nursing that offer baccalaureate and graduate degree programs in California. The nursing deans and directors are the individuals who attend scheduled statewide meetings and actualize the mission, vision, and governance of this organization. Starting in 2011, CACN began a journey toward greater political activism that was initiated by strategic planning.

View Article and Find Full Text PDF

The identification of patients with aggressive cancer who require immediate therapy is a health challenge in low-income and middle-income countries. Limited pathology resources, high healthcare costs and large-case loads call for the development of advanced standalone diagnostics. Here, we report and validate an automated, low-cost point-of-care device for the molecular diagnosis of aggressive lymphomas.

View Article and Find Full Text PDF