SHELF LABELING OF ORGANIC FOODS: EFFECTS ON CUSTOMER PERCEPTIONS AND SALES

The organic food industry is undergoing tremendous expansion. Retail grocers and organic food suppliers are interested in promoting organic foods to customers in mainstream grocery stores. The purpose of this study was to determine if point of purchase (POP) signage in retail grocery stores affects customer perceptions of organic foods and organic food purchasing behavior (sales). An experimental study was designed in which control and two levels of POP signage were tested in two grocery store environments in the Twin Cities metropolitan area. Ten stores were involved; six from an upscale chain and four from a discount/warehouse chain. A customer intercept interview method was used to determine the perceptions of approximately 400 customers in each store; and sales data were tracked for 14 selected organic food items. Results revealed that customers in upscale stores were more likely than discount/warehouse store customers to recognize signs designating organic foods. Younger people, women and those having larger household sizes recognized organic signage most often. In both chains, signage increased the proportion of customers who reported ever buying and planning to buy organic foods. Sales data suggest a positive effect of POP signage on volume of sales for some, but not all tracked foods. Signage significantly increased the sales of skim milk, butter, eggs, deli bread, fresh carrots, spaghetti and flaked cereal in the discount/warehouse stores. In the upscale stores, significant effects of POP signage were found for skim milk, spaghetti, peach nectar and fresh carrots when the sales figures were adjusted for the store's weekly sales volume. The mixed sales results underscore the dynamic interplay between the store environment, its customers, and POP technology.Food Consumption/Nutrition/Food Safety, Institutional and Behavioral Economics, Marketing,

Using Satellite Measurements to Investigate Regional-scale Chemistry: The Case for Geostationary Observations

One of the recommendations of the Decadal Survey that was recently released by the National Academy of Science was that of a geostationary platform from which to obtain trace gas measurements. The use of such a platform is particularly advantageous when applied to understanding the formation of regional air pollution. This study demonstrates the challenges of trying to utilize information from instruments on satellites in low-earth orbit (LEO). We also demonstrate the advantage gained through a simulation that would provide hourly observations. In this case study, we take advantage of the high resolution Level-2 orbital data available from the Ozone Monitoring Instrument (OMI), in conjunction with assimilated stratospheric column ozone fields, to evaluate if meaningful tropospheric ozone information can be obtained on a regional scale. We focus on a period on late June 2005 when a widespread pollution episode enveloped the Houston metropolitan area as well as a large region in southeast Texas

Comparison of Tropospheric Ozone Columns Calculated from MLS, OMI, and Ozonesonde Data

This poster shows a comparison of three derived tropospheric ozone residual (TOR) products with integrated tropospheric ozone columns from ozonesonde profile: (1) the method of Ziemke et al. (2006), (2) a modified version of Fishman et al. (2003), and (3) a trajectory mapping approach. In each case, MLS ozone profiles are integrated to the tropopause and subtracted from OMI (TOMS retrieval) total column ozone. The effectiveness of each of these techniques is examined as a function of latitude, time, and geographic region. In general, we find good agreement between the derived products and the ozonesondes, with the Fishman et al. TOR (labeled “Amy”) generally high and the Schoeberl trajectory mapping (labeled “Mark”) product generally low as compared to the integrated ozonesonde profiles (labeled “Sonde”) as computed using the WMO tropopause definition. Differences in TOR results are due, at least in part, to non-uniform tropopause height definitions between the three approaches

Boat scarring effects on submerged aquatic vegetation in Virginia (year 1)

Submerged Aquatic Vegetation (SAV) in Chesapeake Bay has received significant attention in recent decades due to increasing understanding of the importance of these habitats for ecological functions, including fisheries habitat. Yet, SAV in many regions of the bay are at some of the lowest levels of abundance in recorded history. This has led state management agencies to adopt numerous policies and regulations to protect and restore these valuable communities. The Chesapeake Bay 2000 Agreement highlights SAV by recommitting to the goal of protecting and restoring 114,000 acres, revising existing restoration goals and strategies by 2002, and implementing a strategy to protect and restore SAV by 2002 (Chesapeake Executive Council, 2000). In addition to addressing water quality issues, which are considered the major cause of SAV changes in distribution and abundance, there is increasing concern regarding how direct human impacts such as dredging and boating are affecting SAV. Aerial photography taken annually for monitoring SAV populations baywide has shown evidence of one form of human-induced damage--boat scarring. We therefore more closely examined photographs taken between 1987 and 2000 to evaluate this disturbance. Scarred sites were identified and assessed for key characteristics including intensity, orientation to shoreline, and scar curvature at each site. In addition Virginia Marine Resources Commission (VMRC) enforcement personnel were surveyed for qualitative information on the occurrence of recreational and commercial fishing activities in Virginia’s waters in the vicinity of SAV beds. Aeria

Reflections on the Cost of Low-Cost Whole Genome Sequencing: Framing the Health Policy Debate

The cost of whole genome sequencing is dropping rapidly. There has been a great deal of enthusiasm about the potential for this technological advance to transform clinical care. Given the interest and significant investment in genomics, this seems an ideal time to consider what the evidence tells us about potential benefits and harms, particularly in the context of health care policy. The scale and pace of adoption of this powerful new technology should be driven by clinical need, clinical evidence, and a commitment to put patients at the centre of health care policy

LMDA Review, volume 10, issue 1

Contents include: Photo of Conference Participants Annual Conference 1999, Send in your Ballot, A Note to Ourselves, Increase in Dues and New Annual Membership Expiration Date, LMDA Archive, LMDA Administrator; LMDA Interns, Mid-Year Meeting, Early Career Dramaturg Program, Elliot Hayes Award 2000, Report on Canadian Caucus, Script Exchange, Report on the Dramaturgy Focus Group ATHE 1999, Elliot Hayes Award Winners Lue Douthit and Michel Volansky, Acceptance Speech Lue Morgan Douthit, Elliot Hayes Award Presentation to Michele Volansky for Space, On the Elliot Hayes Award Michele Volansky, Day One of the Conference, Day Two of the Conference, Day Three of the Conference, Day Four of the Conference, The Advocacy Caucus Presentation at the Conference, Final Thoughts, Conference 1999 Many Thanks, Arthur Ballet and the Office for Advanced Drama Research, Spotlight on Early Career Dramaturg Vanessa Porteous, A Working History of LMDA The Early Years, From Academia to Arena A Dramaturg\u27s Education in the Real World, Tony Creamer and Death of a Salesman, Two Moments, Jobs and Projects, Scriptseeker.com, LMDA Online Listserv Instructions, Note from James Magruder, Literary Managers and Dramaturgs of the Americas Bibliography 1999, Noted with Pleasure, and Internship Questionnaire.https://soundideas.pugetsound.edu/lmdareview/1020/thumbnail.jp

Gangliosides Block Aggregatibacter Actinomycetemcomitans Leukotoxin (LtxA)-Mediated Hemolysis

Aggregatibacter actinomycetemcomitans is an oral pathogen and etiologic agent of localized aggressive periodontitis. The bacterium is also a cardiovascular pathogen causing infective endocarditis. A. actinomycetemcomitans produces leukotoxin (LtxA), an important virulence factor that targets white blood cells (WBCs) and plays a role in immune evasion during disease. The functional receptor for LtxA on WBCs is leukocyte function antigen-1 (LFA-1), a β-2 integrin that is modified with N-linked carbohydrates. Interaction between toxin and receptor leads to cell death. We recently discovered that LtxA can also lyse red blood cells (RBCs) and hemolysis may be important for pathogenesis of A. actinomycetemcomitans. In this study, we further investigated how LtxA might recognize and lyse RBCs. We found that, in contrast to a related toxin, E. coli α-hemolysin, LtxA does not recognize glycophorin on RBCs. However, gangliosides were able to completely block LtxA-mediated hemolysis. Furthermore, LtxA did not show a preference for any individual ganglioside. LtxA also bound to ganglioside-rich C6 rat glioma cells, but did not kill them. Interaction between LtxA and C6 cells could be blocked by gangliosides with no apparent specificity. Gangliosides were only partially effective at preventing LtxA-mediated cytotoxicity of WBCs, and the effect was only observed when a high ratio of ganglioside:LtxA was used over a short incubation period. Based on the results presented here, we suggest that because of the similarity between N-linked sugars on LFA-1 and the structures of gangliosides, LtxA may have acquired the ability to lyse RBCs

Creating and Supporting a Mixed Methods Health Services Research Team

Objective. To use the experience from a health services research evaluation to provide guidance in team development for mixed methods research

The case for the continued use of the genus name Mimulus for all monkeyflowers

The genus Mimulus is a well-studied group of plant species, which has for decades allowed researchers to address a wide array of fundamental questions in biology (Wu & al. 2008; Twyford & al. 2015). Linnaeus named the type species of Mimulus (ringens L.), while Darwin (1876) used Mimulus (luteus L.) to answer key research questions. The incredible phenotypic diversity of this group has made it the focus of ecological and evolutionary study since the mid-20th century, initiated by the influential work of Clausen, Keck, and Hiesey as well as their students and collaborators (Clausen & Hiesey 1958; Hiesey & al. 1971, Vickery 1952, 1978). Research has continued on this group of diverse taxa throughout the 20th and into the 21st century (Bradshaw & al. 1995; Schemske & Bradshaw 1999; Wu & al. 2008; Twyford & al. 2015; Yuan 2019), and Mimulus guttatus was one of the first non-model plants to be selected for full genome sequencing (Hellsten & al. 2013). Mimulus has played a key role in advancing our general understanding of the evolution of pollinator shifts (Bradshaw & Schemske 2003; Cooley & al. 2011; Byers & al. 2014), adaptation (Lowry & Willis 2010; Kooyers & al. 2015; Peterson & al. 2016; Ferris & Willis 2018; Troth & al. 2018), speciation (Ramsey & al. 2003; Wright & al. 2013; Sobel & Streisfeld 2015; Zuellig & Sweigart 2018), meiotic drive (Fishman & Saunders 2008), polyploidy (Vallejo-Marín 2012; Vallejo-Marín & al. 2015), range limits (Angert 2009; Sexton et al. 2011; Grossenbacher & al. 2014; Sheth & Angert 2014), circadian rhythms (Greenham & al. 2017), genetic recombination (Hellsten & al. 2013), mating systems (Fenster & Ritland 1994; Dudash & Carr 1998; Brandvain & al. 2014) and developmental biology (Moody & al. 1999; Baker & al. 2011, 2012; Yuan 2019). This combination of a rich history of study coupled with sustained modern research activity is unparalleled among angiosperms. Across many interested parties, the name Mimulus therefore takes on tremendous biological significance and is recognizable not only by botanists, but also by zoologists, horticulturalists, naturalists, and members of the biomedical community. Names associated with a taxonomic group of this prominence should have substantial inertia, and disruptive name changes should be avoided. As members of the Mimulus community, we advocate retaining the genus name Mimulus to describe all monkeyflowers. This is despite recent nomenclature changes that have led to a renaming of most monkeyflower species to other genera.Additional co-authors: Jannice Friedman, Dena L Grossenbacher, Liza M Holeski, Christopher T Ivey, Kathleen M Kay, Vanessa A Koelling, Nicholas J Kooyers, Courtney J Murren, Christopher D Muir, Thomas C Nelson, Megan L Peterson, Joshua R Puzey, Michael C Rotter, Jeffrey R Seemann, Jason P Sexton, Seema N Sheth, Matthew A Streisfeld, Andrea L Sweigart, Alex D Twyford, John H Willis, Kevin M Wright, Carrie A Wu, Yao-Wu Yua