Field experiments were conducted in steel bins containing 13,600 kg of hard red winter wheat, Triiticum aestivum L. One bin was treated with ozone and the second served as a control. Stored grain insects placed for 1-, 2-, 3-, 4-d exposure periods sampling tubes to test concentrations 0, 25, 50, 70 parts per million by volume (ppmv). Ozone treatments on eggs larvae Plodia interpunctella (Hübner) not effective, but pupae more susceptible. Sitophilus oryzae (L.) adults most susceptible species...

Abstract Negative electronic word‐of‐mouth (eWOM) has a notable impact on consumer's online purchase decisions and attitude toward company or product. Despite substantial research examining this phenomenon, little attention been given to the of responses negative eWOM. The authors examine eWOM in form reviews understand how may consumer’s product satisfaction company. Three studies specific aspects responses, including responder type, attribution, severity review. Consistent findings across...

Aerosols that contain volatile species or condensable vapors may be altered by changes in temperature, pressure, and vapor concentration. When such occur within aerosol sampling instruments, the measured size distribution can distorted significantly. The distortion of particle distributions a number commonly used including cascade impactors, both conventional low pressure optical counters, is explored theoretically experimentally this paper. Ammonium sulfate aerosols humid atmospheres have...

The presence of nitrogen in soil and chlorophyll plants are directly related; thus, may be used as an indirect indicator levels fertilizer management systems. This research investigated a non-destructive method determining content concentration field-grown spinach. Biomass was estimated with percent vegetation coverage based on images taken multispectral imaging system. Chlorophyll yield using reflectance-based NDVI from GreenSeekerTM hand-held optical sensor Strong correlations were found...

This research fills a gap in the literature regarding face-to-face privacy invasions. Most arena examines information (e.g., credit card and data information) ignores component of interactions. Using three studies, authors explore impact physical visual invasions on control. The findings show that only one dimension needs to be invaded for consumers feel less control over their privacy. Perceptions have negative relationship with satisfaction, as mediated through feelings anxiety....

Journal Article Efficacy of Heat Treatment for Disinfestation Concrete Grain Silos Get access G. P. Opit, Opit 2 2Corresponding author, e-mail: george.opit@okstate.edu. Search other works by this author on: Oxford Academic PubMed Google Scholar F. H. Arthur, Arthur E. L. Bonjour, Bonjour C. Jones, Jones T. W. Phillips Economic Entomology, Volume 104, Issue 4, 1 August 2011, Pages 1415–1422, https://doi.org/10.1603/EC11104 Published: 01 2011 history Received: April Accepted: 05

The ability to rapidly quantify and characterize the cuticular wax on agricultural crops in situ has utility crop breeding, production, storage, processing. Gas chromatography of solvent-extracted waxes is currently most common method waxes. This article reports a new measurement technique using Fourier transform infrared attenuated total reflectance (FTIR-ATR) spectroscopy. Principal component analysis (PCA) was first used identify potentially important wavelengths from FTIR-ATR spectra...

Chlorophyll is an indirect indicator of nitrogen status and used in optical reflectance-based variable-rate chemical application technology. concentration relates strongly to the photosynthetic potential a plant physiological metabolic plant. This research investigated non-destructive method determining chlorophyll content at individual level Spinacea oleracea (spinach). A multispectral imaging system was determine spectral reflectance estimate top-view surface area. An ultrasonic distance...

The ability to estimate plant water content may provide valuable information environmental and irrigationsystem managers relieve dehydration symptoms prevent permanent growth production damage. Aportable spectroradiometer was used gather hyperspectral reflectance data from three species (corn, spinachand snap beans) grown in a greenhouse subjected different watering conditions instigate levels ofmoisture deficiency. Spectral bands at 950-970, 1150-1260, 1450, 1950, 2250 nm five indices (WI,...

Highly phosphine-resistant populations of Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and Tribolium castaneum (Herbst) Tenebrionidae) have recently been found in Oklahoma grain storage facilities. These findings necessitate development a phosphine resistance management strategy to ensure continued effective use phosphine. Therefore, we investigated the efficacies two insecticides, namely, spinosad applied at label rate 1 ppm mixture chlorpyrifos-methyl deltamethrin rates 3 0.5 ppm,...

The ability to rapidly quantify and characterize the cuticular wax on agricultural crops in situ may have significance crop production, storage processing. Gas chromatography of solvent extracted waxes is most common method measurement. This paper reports two potential, quantitative, measurement techniques which were tested spinach leaves. first technique used Fourier transform infrared spectroscopy with attenuated total internal reflectance optics (FTIR-ATR) waxes. FTIR-ATR spectra...