1,721,299 research outputs found
Effects of Plant-Based Biostimulants, Used Alone or in Combination, on Yield and Quality of Rocket Plants
Full text linkThe climatic conditions over the last few decades were estimated to be the warmest of any previous decade using the Intergovernmental Panel on Climate Change (IPCC). Climate change refers to anomalous, intense, and catastrophic climatic events directly linked to an increase in temperature on Earth. These include hurricanes, floods, melting glaciers, etc. In this context, agriculture is subject to strong abiotic stresses that compromise food safety. It is therefore necessary to resort to agricultural practices that reduce the impact of agriculture on the environment and guarantee crop production. An important answer to this problem comes from the use of biostimulants in agriculture. These are microorganisms and molecules of natural origin able to increase fertilizer effectiveness by limiting their use. In this study, two different plant-based biostimulants were used alone and in combination to test their effectiveness on production, mineral content, and some quality parameters of greenhouse-grown rocket plants. Biostimulant treatments showed an average increase of 48.1% in the total yield and of 37.2% in the dry biomass of the plants compared with control plants without significant differences among treatments. Increases in chlorophyll, calcium, magnesium, and potassium were also detected in the presence of the two biostimulants. The vitamin C content increased compared with the control when the two biostimulants were combined. This study focused on biostimulants as eco-sustainable products able to increase the yield and quality of crops such as rocket plants
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
La fenomenologia come metodo di ricerca pedagogica con e per le famiglie
No full textThe aim of the paper is to present some of the specific opportunities and tools
that Phenomenology, meant as a paradigm and therefore a research method,
can offer the pedagogy of family relationships.
First, some of the central categories of Phenomenology are described and
discussed, with specific reference to Husserl and some of his first students. Below,
it is explained in more detail how phenomenology can be a style of field
research, also in the link with Hermeneutics. Thanks to this description, it
will be highlighted that every phenomenological research design is, as such, an
educational project with a specific ethical depth.
Although the objective of these pages is not to present a specific research in
the field, nor to explain its results, however an experience of analysis and eidetic
description of some parental lived-experiences that emerged in a phenomenological
research-intervention will be also reported, from the point of view by one
of the researchers who carried out it
Variations on the Author
Full text link“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
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