290 research outputs found

    A critical evaluation of the use of the Orleans Geometry Prognosis Test in the Lodi Union High School

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    During the period of this study approximately twenty percent of the students enrolled in the plane geometry course in the Lodi Union High School failed. Students were admitted to the course if they had attained a grade of “B” for their third quarter of first year Algebra, or if their Algebra teacher recommended that they be allowed to enroll on a trial basis, or if the student was not recommended but he and his parents requested that he be allowed to enroll. The Orleans Geometry Prognosis Test was given at the beginning of the geometry course so that students, teachers, counselors, and parents might have further insight into the student’s likelihood of success. It is the purpose of this study to evaluate the usefulness of the Orleans Geometry Prognosis Test as used in the Lodi Union High School and to determine if its use in conjunction with two other standardized measuring instruments would yield better prediction results. The additional prediction tests were two subtests of the Differential Aptitude Test battery, the test of Numerical Ability and the test of Abstract Reasoning. The criterion of success used was the Seattle Plane Geometry Test. SImple and multiple correlations were computed

    A Follow-Up Study of Athletes Graduated From the E. A. Kemp High School, Bryan, Texas 1948-1960

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    Statement of Problem The follow-up method of collecting data is very significant in the world today. This procedure is usually done with a problem in mind. This study has for it\u27s problem: To denote the values of athletics and the curriculum to the athletes during the period 194-8 through 1960. Purposes of Study 1. To formulate a simple set of standards for use in classifying future athletes on the basis of their functional needs. 2. To secure information which could be used to motivate the student in the selection of activities which might improve his functional strength. Scope of Study This study is concerned only with those students who have participated in athletics and graduated from the E. A. Kemp High School, Bryan, Texas, from 1948 - 1960, and whose records of eligibility are on file in the school\u27s office

    Efficacy of an imidacloprid/flumethrin collar against fleas, ticks, mites and lice on dogs

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    BACKGROUND: The studies reported here were conducted to ascertain the efficacy of imidacloprid/flumethrin incorporated in a slow-release matrix collar, against infestations of dogs by fleas, ticks, mites and lice. Efficacy was evaluated against the flea Ctenocephalides felis felis, the ticks Rhipicephalus sanguineus, Ixodes ricinus, Ixodes scapularis, Dermacentor reticulatus and Dermacentor variabilis, the mite Sarcoptes scabiei and the biting louse Trichodectes canis. METHODS: Groups of collar-treated dogs (n = 7–10) were infested with fleas and/or ticks at monthly intervals at least, over a period of up to 8 months. Efficacy against fleas was evaluated 24 to 48 h after treatment and 24 h after each re-infestation. Efficacy against ticks was evaluated at 48 h (acaricidal), 6 h (repellent) and 48 h (sustained) after infestation. The effect of regular shampooing or immersion in water on the efficacy of the collars was also tested. Efficacy against flea larvae was assessed by incubating blanket samples after dog contact with viable flea eggs. Effectiveness against lice and mites was evaluated after treatment of naturally infested animals. With the exception of the mites, efficacy was calculated by comparison with untreated negative control groups. RESULTS: Efficacy against fleas (24 h) generally exceeded 95%, and against flea larvae it exceeded 99% for 8 months. Sustained acaricidal (48 h) efficacy, covering a period of 8 months was 100% against I. ricinus, starting 2 days after treatment (in vivo), and 100% against I. scapularis (in vitro), above 97% against R. sanguineus, generally above 97% against D. reticulatus and above 90% for D. variabilis. Repellent (6 h) efficacy 2 days after treatment and continuing for 8 months was consistently 100% against I. ricinus, and above 90% against R. sanguineus. Regular shampooing affected efficacy against fleas and ticks to a lesser extent than regular immersion in water. The collars eliminated Trichodectes canis within 2 days and Sarcoptes scabiei within 3 months. CONCLUSION: The rapid insecticidal and acaricidal properties of the medicated collars against newly-acquired infestations of fleas and ticks and their sustained high levels of preventive efficacy have been clearly shown. Consequently they have the potential to prevent the transmission of vector-borne diseases and other conditions directly associated with infestation throughout an entire season of parasite abundance.DS, EMK, JJF and WD designed the study design and protocols and JJF and EMK carried out the studies. DS, JJF, EMK and WD and IGH compiled and analysed the data. IGH was responsible for the first draft of the manuscript, which was then substantially revised by all authors. All authors read and approved the final manuscript.These clinical studies were completely funded by Bayer Animal Health GmbH, Monheim, Germany, of which D. Stanneck (Germany) and K. Krieger are employees, and by Bayer HealthCare LLC, Animal Health (USA). ClinVet is an independent Contract Development Organisation, which was contracted to manage the conduct of a part of these studies. I.G. Horak is a long-term, contract employee of Clinvet and an Honorary Professor at the Universities of the Free State and Pretoria. The authors are sincerely grateful to all monitors, investigators and the staff of the study locations either linked to the authors or serving as independent CROs who took part in the numerous studies and ensured that the high GCP and GLP standards were adhered to.http://www.parasitesandvectors.com/content/5/1/102am2013ab201

    Neutrino masses from clustering of red and blue galaxies: a test of astrophysical uncertainties

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    Combining measurements of the galaxy power spectrum and the cosmic microwave background (CMB) is a powerful means of constraining the summed mass of neutrino species sum(m_nu), but is subject to systematic uncertainties due to non-linear structure formation, redshift-space distortions and galaxy bias. We empirically test the robustness of neutrino mass results to these effects by separately analyzing power spectra of red and blue galaxies from the Sloan Digital Sky Survey (SDSS-II) Data Release 7 (DR7), combined with the CMB five-year Wilkinson Microwave Anisotropy Probe (WMAP5) data. We consider fitting for a range of maximum wavenumber k using twelve different galaxy bias models. For example, using a new model based on perturbation theory and including redshift space distortions (Saito et al. 2009), the all-galaxy power spectrum combined with WMAP5 for a wavenumber range of k<0.2 Mpc/h yields 95% CL sum(m_nu)<0.46 eV. The red and blue galaxy power spectra give 0.41 and 0.63 eV respectively for this model. Using mock catalogues, we find the expected difference in these limits assuming a true neutrino mass of zero is 0.10 + or - 0.14 eV. Thus the difference of 0.22 eV between upper limits on neutrino mass for red and blue galaxies is approximately 1 sigma from the expected value. We find similar results for the other models and k ranges tested. This indicates good agreement for current data but hints at possible issues for next-generation surveys. Being able to perform such systematic tests is advantageous, and future surveys would benefit by including broad galaxy populations and luminosities that enable such a decomposition.Comment: 15 pages, 6 figures, matches version published in MNRA

    Susceptibility of adult cat fleas (Siphonaptera: Pulicidae) to insecticides and status of insecticide resistance mutations at the Rdl and knockdown resistance loci

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    This is an Open Access article. © 2015 The Author(s). Published by Springer Berlin Heidelberg.The susceptibility of 12 field-collected isolates and 4 laboratory strains of cat fleas, Ctenocephalides felis was determined by topical application of some of the insecticides used as on-animal therapies to control them. In the tested field-collected flea isolates the LD50 values for fipronil and imidacloprid ranged from 0.09 to 0.35 ng/flea and 0.02 to 0.19 ng/flea, respectively, and were consistent with baseline figures published previously. The extent of variation in response to four pyrethroid insecticides differed between compounds with the LD50 values for deltamethrin ranging from 2.3 to 28.2 ng/flea, etofenprox ranging from 26.7 to 86.7 ng/flea, permethrin ranging from 17.5 to 85.6 ng/flea, and d-phenothrin ranging from 14.5 to 130 ng/flea. A comparison with earlier data for permethrin and deltamethrin implied a level of pyrethroid resistance in all isolates and strains. LD50 values for tetrachlorvinphos ranged from 20.0 to 420.0 ng/flea. The rdl mutation (conferring target-site resistance to cyclodiene insecticides) was present in most field-collected and laboratory strains, but had no discernible effect on responses to fipronil, which acts on the same receptor protein as cyclodienes. The kdr and skdr mutations conferring target-site resistance to pyrethroids but segregated in opposition to one another, precluding the formation of genotypes homozygous for both mutations.Peer reviewedFinal Published versio

    Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6 x 10(20) protons on target

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    111 pages, 45 figures, submitted to Physical Review D. Minor revisions to text following referee comments111 pages, 45 figures, submitted to Physical Review D. Minor revisions to text following referee comments111 pages, 45 figures, submitted to Physical Review D. Minor revisions to text following referee commentsWe thank the J-PARC staff for superb accelerator performance and the CERN NA61/SHINE Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC, NRC, and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; National Science Centre (NCN), Poland; RSF, RFBR and MES, Russia; MINECO and ERDF funds, Spain; SNSF and SER, Switzerland; STFC, UK; and the U. S. Deparment of Energy, USA. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET4, the WestGrid and SciNet consortia in Compute Canada, GridPP, UK, and the Emerald High Performance Computing facility in the Centre for Innovation, UK. In addition, participation of individual researchers and institutions has been further supported by funds from ERC (FP7), EU; JSPS, Japan; Royal Society, UK; and DOE Early Career program, USA

    Measurement of the electron neutrino charged-current interaction rate on water with the T2K ND280 pi(0) detector

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    10 pages, 6 figures, Submitted to PRDhttp://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.112010© 2015 American Physical Society11 pages, 6 figures, as accepted to PRD11 pages, 6 figures, as accepted to PRD11 pages, 6 figures, as accepted to PR
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