205 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
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 textFamily History and the Risk of Breast and Gastric Cancer
No full textEpidemiologists have used family history, usually of first degree relatives, as a marker for genetic risk, knowing that family history reflects the consequences of genetic susceptibilities, shared environment, and common behaviors. The role of family history on breast and gastric cancer risk has been evaluated in multiple studies. As for breast cancer, informative valid,and precise estimates of the role of family history derive from a reanalysis of individual data from 52 epidemiologicstudies including over 58,000 women with breast cancer and 100,000 controls, which estimated an approximately two fold increased risk for women with family history; the risk increased with the number of affected relatives, decreased with age and was greater the younger the relatives were when their breast cancer was diagnosed. As for gastric cancer, a meta-analysis published in 2018 and based on 36 case-control and 4 cohort studies found a significant pooled relative risk of about 2; in line with that, a subsequent analysis based on individ-ual participant data from 17 studies participating in the Stomach cancer Pooling (StoP) Project foundan 80% increased risk in subject with at least on first-degree relative affected by gastriccancer
A New Framework for the Citation Indexing Paradigm
No full textA new citation indexing paradigm is proposed: the cascading citation indexing framework (c2IF, for short). It improves the way research publications are assessed for their impact in promoting science and technology. Given a collection of articles and their citation graph, citations are considered at the (article, author) level. Each one article is uniquely identified by means of the Digital Object Identifier (DOI, http://www.doi.org). To identify each one author uniquely, a Universal Author Identifier (UAI) scheme is established. In addition to the citations directly made to a given (article, author) pair, citation paths that target each one citing article are also considered. The granularity of the paradigm is further increased by introducing the concept of the chord, whereby a citation path of length one co-exists with paths of length two or higher, involving the same source- and target- articles. The c2IF output emerges in the form
of a medal standings table, analogous to the one that ranks teams at athletic events: when two (article, author) pairs receive the same number of (direct) citations, the one that is cited by more popular articles (i.e. articles that comprise targets to a larger number of paths in the citation graph), is assigned a higher rank value
The NOx reduction by CO on Pt-K/Al2O3 Lean NOx Trap Catalyst
No full textThe reduction by CO under dry conditions of NOx species stored at 350 °C onto a Pt−K/Al2O3 lean NOx trap catalyst is investigated by means of transient response methods (CO-TPSR and CO-ISC experiments) and complementary FT-IR spectroscopy. The results show that the pathway for the reduction of stored NOx by CO under dry and near isothermal conditions (and in the absence of CO2) is the same as that proposed by some of us in a previous work for a Pt−Ba/Al2O3 catalyst. In particular, (i) the reduction of stored NOx by CO occurs according to a Pt-catalyzed surface pathway that does not involve, as a first step, the release of NOx in the gas phase, is effective already at low temperature, and leads to nitrogen; (ii) the reaction scheme implies the formation of surface isocyanate species, followed by the reaction of these species with residual NOx to give nitrogen; and (iii) the reaction of NCO species with nitrates to give nitrogen is slightly slower than the reduction of nitrates to give NCO species; but on the Pt−K/Al2O3 catalyst, this last step is faster than on the Pt−Ba/Al2O3 system. As a consequence, the amount of isocyanate species present on the surface at the end of the reduction is lower for Pt−K/Al2O3 than for the Pt−Ba/Al2O3 catalyst
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