3,281 research outputs found
Absolute calibration of a large-diameter light source
No full textA method of absolute calibration for large aperture optical systems is presented, using the example of the Pierre Auger Observatory fluorescence detectors. A 2.5 m diameter light source illuminated by an ultra-violet light emitting diode is calibrated with an overall uncertainty of 2.1 % at a wavelength of 365 nm.Fil: Brack, J. T.. Colorado State University; Estados UnidosFil: Cope, R.. Colorado State University; Estados UnidosFil: Dorofeev, A.. Colorado State University; Estados UnidosFil: Gookin, B.. Colorado State University; Estados UnidosFil: Harton, J. L.. Colorado State University; Estados UnidosFil: Petrov, Y.. Colorado State University; Estados UnidosFil: Rovero, Adrian Carlos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentin
Class of 1949 Confirmation Dinner
No full textCopy negative of a group portrait at the Danevang Community Hall in 1949. The group of people are celebrating with a dinner confirmation. There are large tables with chairs, dinner ware on the tables, and flowers decorating the hall. Standing in top row is Eddie Petersen, Lars L. Wind, Smike Skow, Cecelia Hansen, Donald Nielsen, Darleen Juhl, Ellis (Pee Wee) Wind, Elenora Hansen, Mrs. John Pedersen, Pastor John Pedersen, Dagmar Thyssen, Virgil Harton, Norma Lee Skow, Erling Thaysen, Peter Westerholm, Walter Nielsen, B. D. Krag, and Johannes Hansen. The second row consists of H. J. Berndt, Einer Wind, Mrs. H. O. Jensen, Olga Andersen, Margaret Juhl, Emilie Nielsen, Marilyn Skov, Dora Wind, Carl Thyssen, Ida Thyssen, Agnes Hansen, Ramona Harton, Marie Thaysen, Marie Swendsen, Mrs. E. H. Jensen, Dora Krag (holding daughter Sharon), Karen Berdnt, Hans J. Nelsen. Standing in the third row is Carl Thaysen, Arnold Juhl, Niels Carlesen, Bill Harton, Mrs. Anker Jensen, Mrs. Eddie Petersen, Wanda Swendsen, Marilyn Thaysen, Mrs. Carl Harton, Gerda Thyssen Rhodes, Esther Harton, Anna Petersen, Anges Juhl Jensen, Hazel Nielsen, Mrs. Walter Nielsen, and Martin Nielsen. The people sitting in the bottom row are Viggo Juhl, P. J. A. Petersen, Carl Harton, Mrs. P. J. A. Petersen, Elizabeth Juhl, Mrs. Westerholm, Gene Wilbert Hansen, Abalone Westerholm, Bine Andersen, and Anna Nygaard
Arkansas State Normal College Association
No full textGroup portrait of the Arkansas State Normal College Association, 1915.
Back row, left to right:
Charles E. Durham
Joe Frauenthal
J. J. Doyne, President of Arkansas State Normal School
William D. Cole
G. L. Bahner
J. C. Clark
J. E. Little
S. G. Smith
Henry B. Ingram
J. G. Cubage, faculty member
Benjamin Harton
Front row, left to right:
Possibly Harry Ponder
Dr. A. C. Miller, faculty member of Hendrix College
John Stubbs
Unidentified
Possible Marcellus T. Davis
Lee Cazor
Coherent J/psi and psi ' photoproduction at midrapidity in ultra-peripheral Pb-Pb collisions at root s(NN)=5.02 TeV
No full textThe coherent photoproduction of J / ψ and ψ ′ mesons was measured in ultra-peripheral Pb–Pb collisions at a center-of-mass energy sNN=5.02 TeV with the ALICE detector. Charmonia are detected in the central rapidity region for events where the hadronic interactions are strongly suppressed. The J / ψ is reconstructed using the dilepton (l+l-) and proton–antiproton decay channels, while for the ψ ′ the dilepton and the l+l-π+π- decay channels are studied. The analysis is based on an event sample corresponding to an integrated luminosity of about 233 μb - 1. The results are compared with theoretical models for coherent J / ψ and ψ ′ photoproduction. The coherent cross section is found to be in a good agreement with models incorporating moderate nuclear gluon shadowing of about 0.64 at a Bjorken-x of around 6 × 10 - 4, such as the EPS09 parametrization, however none of the models is able to fully describe the rapidity dependence of the coherent J / ψ cross section including ALICE measurements at forward rapidity. The ratio of ψ ′ to J / ψ coherent photoproduction cross sections was also measured and found to be consistent with the one for photoproduction off protons
Coherent J / ψ and {\uppsi '} ψ ′ photoproduction at midrapidity in ultra-peripheral Pb–Pb collisions at s NN = 5.02 TeV
No full textAbstract The coherent photoproduction of J / ψ and {\uppsi '} ψ ′ mesons was measured in ultra-peripheral Pb–Pb collisions at a center-of-mass energy s NN = 5.02 TeV with the ALICE detector. Charmonia are detected in the central rapidity region for events where the hadronic interactions are strongly suppressed. The J / ψ is reconstructed using the dilepton ( l + l - ) and proton–antiproton decay channels, while for the {\uppsi '} ψ ′ the dilepton and the l + l - π + π - decay channels are studied. The analysis is based on an event sample corresponding to an integrated luminosity of about 233 μ b - 1 . The results are compared with theoretical models for coherent J / ψ and {\uppsi '} ψ ′ photoproduction. The coherent cross section is found to be in a good agreement with models incorporating moderate nuclear gluon shadowing of about 0.64 at a Bjorken-x of around 6 × 10 - 4 , such as the EPS09 parametrization, however none of the models is able to fully describe the rapidity dependence of the coherent J / ψ cross section including ALICE measurements at forward rapidity. The ratio of {\uppsi '} ψ ′ to J / ψ coherent photoproduction cross sections was also measured and found to be consistent with the one for photoproduction off protons
Development of a SNP Chip for caribou/reindeer (Rangifer tarandus): Illumina BeadChip RangiferSNP63k_v2
No full textIce Cream Freezer.
No full textPatent for an ice cream freezer, which rocks rather than turning in a circle to freeze the ice cream
Balance nutricional de referencia de suelos y hojas en el cultivo del plátano harton.
No full textSe han propuesto diversos métodos para interpretar y evaluar el balance nutricional de los cultivos; sin embargo, estas propuestas presentan en mayor o menor grado diferentes limitaciones. El objetivo de este trabajo fue evaluar y utilizar un método alternativo de análisis multivariado para obtener el balance nutricional de referencia de suelos y hojas en el cultivo del plátano Harton localizado en el sur del Lago de Maracaibo, Venezuela. En el sector río Mucujepe-Escalante, se establecieron estratos de muestreos de acuerdo con las series de suelos. En la unidad experimental, conformada por la planta "madre" y la planta "hijo" se colectaron 30 muestras de suelos sobre la banda de fertilización a las profundidades de 0 - 20 cm y 21- 40 cm y 30 muestras de hojas, de acuerdo al método de Muestreo Internacional de Referencia para musáceas. Se estableció, vía método paso a paso, un modelo de regresión de estimación del rendimiento con las combinaciones lineales. El modelo obtenido presentó un ajuste del 51,98% (r2), altamente significativo, con normalidad de los residuos estándares. Con el rendimiento estimado se separó la subpoblación en plantas con más ó menos de 18 kg· racimo-1. Con las medias de las variables del suelo, pH, CE, MO, a, L, A, P, K, Ca, Mg, S, B, Cu, Fe, Mn y Zn y de la hoja, N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Mo, Na y Zn se estableció el balance nutricional de referencia, con la ventaja que en el mismo se evalúan simultáneamente las propiedades físicas y químicas del suelo y del estado nutricional de la planta, asociadas significativamente al rendimiento promedio esperado
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