Evaluation of Two Systems Used to Extract Alfalfa Weevil Larvae (Coleoptera: Curculionidae) from Alfalfa Samples

A modified Berlese funnel system was developed to extract alfalfa weevil larvae (Hypera postica) from quadrats 30.5 cm on a side. Data from this system were comp.wed with simultaneous data from a hand sorting extraction system. In most instances, the modified Berlese system was as efficient as the hand sorting method and the number of man hours required to process samples by hand was far greater than that required by the Berlese system

Disease as a Larval Mortality Factor in Alfalfa Weevil, \u3ci\u3eHypera Postica\u3c/i\u3e (Coleoptera: Curculionidae) Populations in Illinois

During the 1974 growing season, larvae of the alfalfa weevil, Hypera postica (Gyllenhal), were examined for pathogens. Three larvae out of 715 examined were infected with a microsporidium. This infection was present in both Washington and Mason counties in Illinois

Influences of Host Density, Temperature, and Parasite Age on the Reproductive Potential of \u3ci\u3eBathyplectes Curculionis\u3c/i\u3e (Hymenoptera: Ichneumonidae), an Endoparasite of the Alfalfa Weevil (Coleoptera: Curculionidae)

Alfalfa weevil larvae were exposed to Bathyplectes curculionis (Thomson) to determine the effect of host density, temperature, and parasite age on the reproductive potential of curculionis. Percent parasitism was found to be inversely proportional to host density and most of the parasites distributed their eggs randomly regardless of host density. The number of eggs deposited was largely independent of temperature. Peak egg laying was reached in three days from which point the parasite\u27s capabilities diminished with increasing age. The longevity of ovipositing females was shorter than females that were not exposed to larvae

Improving Advanced Practice Nursing Care to Children With Autism in the Emergency Department

Autism Spectrum Disorder (ASD) prevalence rates are increasing within the pediatric population. Often, these children present to emergency departments (EDs) for care that could typically be managed in a primary care setting. Furthermore, pediatric patients with ASD utilize EDs at a rate higher than children without (Baio et al., 2018). Parents, patients, and providers within the pediatric ED setting report a lack of understanding and tools needed to provide quality and meaningful care to this population. The utilization of nurse practitioners in the ED setting is increasing due to affordability and quality of care delivery. The intersection of these two variables presents an important opportunity for the nurse practitioner to serve as a care provider and advocate for children with ASD within the ED setting. It also allows the nurse practitioner working within the ED setting to act as an educator and resource for other providers working with children with Autism Spectrum Disorder. These roles would aid in improving quality of care and health equity to children with AS

Low Velocity Granular Drag in Reduced Gravity

We probe the dependence of the low velocity drag force in granular materials on the effective gravitational acceleration (geff) through studies of spherical granular materials saturated within fluids of varying density. We vary geff by a factor of 20, and we find that the granular drag is proportional to geff, i.e., that the granular drag follows the expected relation Fprobe = {\eta} {\rho}grain geff dprobe hprobe^2 for the drag force, Fprobe on a vertical cylinder with depth of insertion, hprobe, diameter dprobe, moving through grains of density {\rho}grain, and where {\eta} is a dimensionless constant. This dimensionless constant shows no systematic variation over four orders of magnitude in effective grain weight, demonstrating that the relation holds over that entire range to within the precision of our data

Electron diffraction studies of supersonic jets. VI. Microdrops of benzene

Large clusters of benzene were generated in supersonic flow through a Laval nozzle with carrier gases He, Ne, or Ar. Benzene concentration and carrier pressures were varied over wide ranges. Diffraction patterns recorded from s=0.8 to 12 Å−1 revealed strong intermolecular interference features indicative of supercooled bulk liquid at 100–200 K. Computer simulations of nucleation and cluster growth were carried out and agreed with the following observations. An initial benzene partial pressure of ∼0.1 bar expanded through a nozzle of our design requires a carrier pressure of 2–3 bar to give reasonably complete condensation. Cluster diameter and fraction condensed decrease if (1) benzene mole fraction is reduced at constant carrier pressure, (2) carrier pressure is reduced at constant benzene partial pressure, and (3) carrier molecular weight is decreased. The simulations identify the factors accounting for the trends. Cluster intensities are compared with those calculated for small clusters proposed by Williams, small crystal fragments, and bulk fluid according to the statistical mechanical algorithm RISM. None of the models reproduce observed results within experimental error but comparisons provide information about size, temperature, and structure. Intrinsic deficiencies of RISM are indicated by the present experiments.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70115/2/JCPSA6-80-4-1451-1.pd

Electron diffraction studies of supersonic jets. V: Low temperature crystalline forms of SF\u3csub\u3e6\u3c/sub\u3e, SeF\u3csub\u3e6\u3c/sub\u3e, TeF\u3csub\u3e6\u3c/sub\u3e

Condensation of SF6, SeF6, and TeF6 in nozzle flows with inert carrier gases produces microcrystals of these materials. All form the higher temperature body‐centered cubic structure at higher partial pressures of hexafluoride. At lower partial pressures and colder nucleation conditions a lower symmetry form of each has been produced. Electron diffraction powder patterns are consistent with the space group Pnma to which metal hexafluorides of UF6 type belong. Low temperature phases of the present materials differ from those of the metal compounds, however, in being less dense than the cubic forms. Aspects of the gas dynamics affording a control over nucleated species are briefly discussed

Images of gas molecules by electron holography. II. Experiment and comparison with theory

Molecular images photographed by a variant of holographic microscopy proposed in Paper I are presented. ’’Holograms’’ were taken with an electron beam of 0.06 Å wavelength recorded up to a numerical aperture of 0.2 to yield an Abbe resolution limit of 0.15 Å. Experimental requirements and procedures are described. Images, representing rotational averages over an ensemble, closely resemble images calculated according to the theoretical expressions derived in Paper I. The theoretical treatment took into account the degradative effects of the zeroth‐order beam transmitted through the hologram, finite numerical aperture and wavelength, the ’’false’’ peaks arising from the cutoff of the holograms at their centers, and nonoptimum first‐stage filter functions. Illustrative examples include AsF5, a case chosen to satisfy standard holographic requirements, and two cases, SF5Cl and CF3OOCF3, selected to produce more complicated images.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70795/2/JCPSA6-70-8-3958-1.pd