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Influence of climatic conditions on the growth and quality in harvest and post-harvest of the plum fruit (Prunus salicina L.) variety “Horvin”
Get PDFilustraciones, diagramasEl crecimiento y desarrollo del fruto de ciruela (Prunus salicina L.), variedad. Horvin son
procesos que requieren de condiciones climáticas específicas como la temperatura, la
humedad relativa, la precipitación y la radiación. El objetivo de este estudio fue estudiar
la Influencia de las condiciones climáticas en el crecimiento y calidad en cosecha y
postcosecha del fruto de ciruela y a su vez formular algunos modelos de pre cosecha y
cosecha del fruto, en función de las condiciones climáticas de las localidades donde se
adelantó el estudio, para lo cual, se marcaron veinte árboles por finca, en dos localidades del municipio de Nuevo Colón, departamento de Boyacá, Colombia. Las mediciones se realizaron durante tres cosechas (años 2021-2022), cada 7 días hasta la madurez de la cosecha.
Para la formulación de los modelos en estado pre cosecha, se consideró la temperatura
de las localidades seleccionadas en términos del tiempo térmico (GDC), donde se
propuso un modelo fenológico, determinando la temperatura base (Tb), para los cuatro
periodos fenológicos del cultivo y la cuantificación de los grados días de crecimiento
(GDC). Para el desarrollo del fruto se determinó una Tb = 1.78 ºC, para la determinación
de los modelos se utilizó la herramienta solver de Excel®. Los resultados mostraron que, durante el crecimiento del fruto de ciruela, en las características fisicoquímicas, las
variables que más tienen incidencia son la altitud, la precipitación y la altitud. Los
modelos de peso fresco, sólidos solubles totales y firmeza de la pulpa son los que mejor
predicen la evolución de la calidad del fruto de ciruela durante su desarrollo. Se obtuvieron ecuaciones de crecimiento para la longitud y el diámetro en función del peso
del fruto, así como para los días transcurridos desde la antesis en función de los grados-
día de crecimiento y la altitud. Los modelos para determinar la calidad del fruto de ciruela muestran que las condiciones climáticas del cultivo y su altitud inciden en las
características fisicoquímicas del fruto durante la postcosecha, así como el análisis de
regresión mostró que los modelos predicen de buena forma las propiedades del fruto; la
validación cruzada arrojó un buen ajuste mediante ecuaciones entre los valores
observados y los valores estimados. (Texto tomado de la fuente)The growth and development of the plum fruit (Prunus salicina L.), var. Horvin are
processes that require climatic conditions such as temperature, relative humidity,
precipitation and radiation. The objective of this research was to study the influence of
climatic conditions on growth and quality at harvest and postharvest of plum fruit. And in turn, to formulate some models of pre-harvest and harvest of the fruit, depending on the climatic conditions of the localities where the study was carried out, for which, twenty trees per farm were marked in two localities of the municipality of Nuevo Colon, Boyaca department, Colombia. Measurements were made during three harvests (years 2021- 2022), every 7 days until harvest maturity. For the formulation of the models in the pre-harvest state, the temperature of the selected localities was considered in terms of thermal time (GDC), where a phenological model was proposed, determining the base temperature (Tb), for the four phenological periods of the crop and the quantification of the degree days of growth (GDC). For the development of the fruit, a Tb = 1.78 ºC was determined, for the determination of the models the Excel® solver tool was used. The results showed that, during the growth of the plum fruit, in the physicochemical characteristics, the variables that have the most incidence are altitude, precipitation and altitude. The models of fresh weight, total soluble solids and pulp firmness are the best ones to predict the evolution of the quality of the plum fruit during its development. Growth equations were obtained for length and diameter as a function of fruit weight, as well as for days elapsed since anthesis as a function of growth degree-days and altitude. The models to determine the quality of the plum fruit show that the climatic conditions of the crop and its altitude affect the physicochemical characteristics of the fruit during postharvest. The regression analysis showed that the models predict the properties of the fruit in a good way, the cross validation showed a good fit through equations between the observed values and the estimated values.DoctoradoDoctor en Ciencias AgrariasFisiología vegeta
Incidencia de las características edáficas y climáticas en el desarrollo del fruto de ciruela variedad Horvin, en el municipio de Nuevo Colón Boyacá
Get PDFEl desarrollo del cultivo de ciruelo (Prunus domestica L.) así como su edafología y calidad al momento de cosecha, son principalmente estimulados por la precipitación, y afectados en menor proporción por otros factores de clima y suelo. El objetivo de este estudio fue determinar la influencia de algunas variables climáticas y características del suelo en el desarrollo del fruto de ciruela cv. Horvin y su calidad en cosecha en el municipio de Nuevo Colón – Boyacá. Se marcaron veinte árboles por localidad en cuatro altitudes diferentes. Las mediciones se realizaron durante dos cosechas. Para el estudio de fisiología y caracterización físico- químico de fruto desde cuaje hasta cosecha. Se realizó un muestreo cada 15 días hasta su recolección, paralelo a esto se tomaron los datos de temperatura precipitación y humedad relativa para determinar la temperatura base. En el estudio físico y químico de suelos se tomaron muestras en cada localidad. Los resultados de los análisis multivariado y de correlación muestran que las condiciones climáticas, como la precipitación y la temperatura, así como la densidad aparente, macroporos, microporos, calcio, magnesio y azufre, inciden en el momento de la cosecha, en algunas propiedades del fruto como peso, longitud, firmeza e intensidad respiratoria.Abstract Crop development plum (Prunus domestica L.) and its soil science and quality at harvest, are mainly stimulated by precipitation. Also, the crop is affected by other climate factors and soil acting lesser extent. The aim of this study is to determine the influence of some climatic variables and soil characteristics in the development of the plum fruit cv. Horvin and quality harvest in the town of Nuevo Colón - Boyaca. Twenty trees per locality in four different altitudes are marked. Measurements were made for two harvests. For the study of physiology and physico-chemical characterization of fruit were made from fruit set to harvest. Sampling was conducted every 15 days until harvest, parallel to this temperature data precipitation and relative humidity were taken to determine the base temperature. In the physical and chemical study of soil samples they were taken at each location. The results of the multivariate analysis and correlation show that weather conditions such as rainfall and temperature, as well as bulk density, macro-pores, micropores, calcium, magnesium, sulfur, affect some properties of the fruit at harvest time as weight, length, strength and respiratory intensity.Maestrí
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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