177,168 research outputs found
The effect of Bonzi (Paclobutrazol) on height and flowering of the paper daisies Rhodanthe chlorocephala subsp.rosea and Rhodanthe manglesii
No full textThe pink paper daisies Rhodanthe chlorocephala subsp.rosea and Rhodanthe manglesii are Western Australian wild flowers bush harvested as cut flowers. They produce numbers of showy, long lasting inflorescences at the tips of 50 to 60cm tall stems in spring. The growth retardant Bonzi(R) (paclobutrazol) was applied to both species as soil drenches or whole plant sprays alone or combined seed soaks and drenches. The retardant was applied at various concentrations and times, to determine if plant height could be reduced for pot plant production. Growth was measured weekly and recorded on a graph of maximum/TinimuT desired height (20-30cm). After initial treatments on week 4, all treatments were applied using Graphical Tracking techniques, that is, when actual growth deviated above the maximum height line.
Plant height was suppressed with all applications of Bonzi(R) (paclobutrazol). Increasing both the rate and number of applications of BonznK)(pac1obutrazo1) led to an increase in shoot suppression, flowering time and number.
The combined seed soak (400ppm Bonzi(R)) and multiple drench application (Bonzi(R) 4mg ai/pot x 3) was most effective in suppressing shoot elongation of R.chlorocephala subsp.rosea with plants 41% shorter than untreated plants. lowering was delayed and numbers reduced, but the compact plants had sufficient numbers of flowers at the end of the trial period to appeal to consumers.
Bonzi(R) caused very noticeable delays in flowering in all treated Rhodanthe manglesii plants. The 4mg drenches, (4mg ai/pot x 3) gave the most satisfactory result producing plants 38% shorter than untreated controls but some pots had not flowered by the termination of the trial. The best results, in respect to height, were again the combination seed soak plus drench, with only a single 4mg drench application required to reduce height by 48%, but germination was suppressed excessively and flowering was unacceptably delayed. Although growth was suppressed significantly by whole plant sprays none were saleable due to the unsightly chlorotic foliage effects on both species
Characteristics of Self-Citation in Journal of Natural Rubber Research 1988-1997: a Ten-Year Bibliometric Study
No full textAnalyses the extent of journal self-citation and author self-citation in the research articles and short communications published in Journal of Natural Rubber Research during 1988 to 1997. Results show that 53% of articles contained journal self-citations; the rate of journal self-citations per article ranges between 1 to 12; a high percentage of authors (61.4%) contributing articles to the journal cited themselves; a tendency is noticed for authors affiliated to the institution publishing the journal to cite the journal; the highest self-citing author is A. D. Roberts
Study of the characteristic parameters of the normal voices of Argentinian speakers
No full textThe voice laboratory permits to study the human voices using a method that is objective and noninvasive. In this work, we have studied the parameters of the human voice such as pitch, formant, jitter, shimmer and harmonic-noise ratio of a group of young people. This statistical information of parameters is obtained from Argentinian speakers.
Received: 29 December 2013, Accepted: 27 May 2014; Reviewed by: J. Brum, Instituto de Física, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Edited by: E. Mizraji; DOI: http://dx.doi.org/10.4279/PIP.060002
Cite as: E V Bonzi, G B Grad, A M Maggi, M R Muñoz, Papers in Physics 6, 060002 (2014
A methodology to determine natural radioactivity by γ spectrometry without using calibrated standard samples
No full textArtículo finalmente publicado en: González, E. R., Mainardi, R. T., Grad, G. B. y Bonzi, E. V. (2017). A methodology to determine natural radioactivity by γ spectrometry without using calibrated standard samples. Applied Radiation and
Isotopes, 125, 48-52. http://dx.doi.org/10.1016/j.apradiso.2017.03.025Fil: González, Enrique Ramón. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Mainardi, Raúl Torino. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Grad, Gabriela Beatriz. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Bonzi, Edgardo Venusto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.When determining the radioactivity in materials by γ spectra, different processes are involved difficulting the fit. Besides, calibrated standard samples are necessary. In this work we propose a methodology to determine natural radioactivity using simulated γ spectra by Monte Carlo and without the use of calibrated standard samples. We applied this methodology to determine radioactivity of K 40 isotopes from a light salt sample. Then we applied this process in soil samples and the results where compared with the values obtained by an other laboratory. In this comparison our results are on average a 13 % smaller.info:eu-repo/semantics/acceptedVersionFil: González, Enrique Ramón. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Mainardi, Raúl Torino. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Grad, Gabriela Beatriz. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Bonzi, Edgardo Venusto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Física Atómica, Molecular y Química (física de átomos y moléculas incluyendo colisión, interacción con radiación, resonancia magnética, Moessbauer Efecto.
Experimental determination of L X-ray fluorescence cross sections for elements with 45 < Z < 50 at 10 keV
No full textSynchrotron radiation at 10 keV was used to experimentally determine the Ll, L, LI, LII, LI and LII fluorescence cross sections for elements with 45 < Z < 50, as part of an ongoing investigation at low energies. The measured data were compared with calculated values obtained using coefficients from Scofield, Krause and Puri et al.
Received: 19 December 2013, Accepted: 20 January 2014; Reviewed by: J. P. Marques, Departamento de Física, Centro de Física Atómica, Fac. de Ciências, Universidade de Lisboa, Portugal.; Edited by: P. Weck; DOI: http://dx.doi.org/10.4279/PIP.060001
Cite as: E V Bonzi, G B Grad, R A Barrea, Papers in Physics 6, 060001 (2014
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Morphological traits and sex ratios of Acanthochromis polyacanthus F2 generation in present-day and elevated temperatures
No full textPlease see the associated publication on why and how this data was collected and analysed: Spinks, R.K., Donelson, J.M., Bonzi, L.C., Ravasi, T. & Munday, PL. (2022) Parents Exposed to Warming Produce Offspring Lower in Weight and Condition. Ecology and Evolution.
This data publication contains the dataset and a R script for the above publication
Italian guidelines on thrombolysis indications in ischemic stroke have been revised after IST-3 trial and Cochrane revision: Cons
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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