1,720,971 research outputs found
How the cuticle of soil-digging beetles can help us achieve non-stick surfaces for soil tillage tools: a review
No full textPosterWhat is the best topographical pattern that should be used to enhance the functional property of non-stickiness? Is it possible to find a characteristic pattern common to all species? Will such a pattern depend on the physical properties of the soil where these beetle species live? Is it more effective to use topographic patterns with protrusions or dimples?Instituto de SuelosFil: Favret, Eduardo Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científica y Técnicas; ArgentinaFil: Guillén, Noelia Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científica y Técnicas; ArgentinaFil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentin
Pronotum Using Translucent Replicas
Get PDFFor some years, we have been studying the microtopography of soil diggers beetles fromArgentina to find the anti-adhesion pattern
to decrease a soil particle adhesion for agricultural machinery components. In 2018, we designed a macro topographic pattern for
the upper surface of a steel shovel for tilling (agricultural tool) fromthe study of the microtopography (microrelief) of the cuticular
surface of the pronotum of Diloboderus abderus (Coleoptera, Scarabaeidae), whose main feature is the presence of dimples randomly
distributed.Fil: Guillén, Noelia Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; ArgentinaFil: Fil: Sánchez, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Favret, Eduardo A. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Ascospore Topographical Pattern as an Analytical Mycological Resource
Get PDFThe present work explores RIMAPS performance as a supplemental mycological technique.Fil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Romero, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Comerio, R. M.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional La Pampa-San Luis. Estación Experimental Agropecuaria Anguil; ArgentinaFil: Romero, Andrea Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Favret, Eduardo Alfredo. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Wheat Leaf Rust Fungus: RIMAPS Analysis to Detect Germ-tube Orientation Pattern
Get PDFWheat is severely affected by a destructive disease, leaf rust, caused by fungus, Puccinia triticina E. All over the world, wheat leaf rust reduces crop yield up to 10%. When the uredospore reaches the leaf surface develops germ-tubes, which are directed towards the stomata. The germ-tube grows and elongates perpendicular to the long axis of the epidermal cells, this orientation is considered to be response to stimuli from the host, such us physical and chemical features. The topography of the leaf surface has been proposed by several investigators as a major factor that can influence the direction of the germ-tube growth. Our research work is based on determining which of these topographic parameters influence the development of the germ-tubes, by using artificial surfaces with known topographies.Fil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lendoiro, Natalia. Universidad de Morón. Facultad de Ciencias Exactas, Químicas y Naturales; ArgentinaFil: Favret, Eduardo Alfredo. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
How to improve soil anti-adhesion by studying the micro relief of the cutible surface of digging beetles: Using rotated image with maximum average power spectrum technique to find the predominant directions of the topographic patten.
Get PDFIn recent years, our research has focused on the microtopography of different soil-digging beetles, with the aim of identifying the pattern responsible for reducing the adhesion of soil particles to agricultural machinery components [1, 2]. The main characteristic of the microtopography (micro relief) of the cuticular surface of the pronotum of these beetles is the presence of dimples apparently randomly distributed.
In the present work, the angular orientation of the dimples pattern is quantified by employing the Rotated Image with Maximum Average Power Spectrum (RIMAPS) technique [3]. The RIMAPS technique, facilitated by software [4], involves the rotation of the image and the calculation of the x-step of the two-dimensional Fourier transform for each y-line of the resulting new image after rotation. Averaged power spectra are obtained for each angular position, and the corresponding maximum values are plotted as a function of rotation angle. The maxima of the RIMAPS spectrum are indicative of the main angular directions of the topographic pattern.Instituto de SuelosFil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; ArgentinaFil: Guillén, Noelia Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científica y Técnicas; ArgentinaFil: Favret, Eduardo Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científica y Técnicas; Argentin
Bot-graphy: An original technique for plant anatomy study based o metallography
Get PDFPlant anatomists are recurrently looking for safer and faster methods to improve the observations of plants tissues, searching for images with better resolution. Nevertheless, some plant materials are difficult to handle due to their consistency, such as those with very hard tissue or with a combination of soft and hard tissues (e. g. parenchyma and sclerenchyma). In these cases, softening techniques have been developed [1]. But they do not completely solve this problem since their success depends on the thickness of the plant organ (Argentinian anatomists, pers. commun., 2020). To find a solution to this limitation, a standard procedure of metallography is proposed, as an alternative, for the study of plant organs. The standard technique consists of mounting the specimen in a castable resin (liquid polymer film), followed by grinding the sample with abrasive papers of different granulometry and observing the sample surface with optical reflection microscopy [2]. In this work, an example is shown, the basal internodes of 2.5 to 3 cm in diameter of sugarcane, harvested in Famaillá, Tucumán, Argentina.Fil: Montero, Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Gomez, Fernando. Universidad Nacional de San Martin. Instituto de Tecnología Sabato; ArgentinaFil: Setten, Lorena. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; ArgentinaFil: Favret, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; ArgentinaFil: Torres, Dario. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentin
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
La adhesión del suelo en sembradoras, ¿se evita con cuchillas de superficies lisas o rugosas?
No full textPosterLa adhesión del suelo a los órganos activos de la maquinaria agrícola puede aumentar el consumo de combustible hasta un 50 %, prolongar los tipos de trabajo y reducir la calidad de las labores. Una solución innovadora se encuentra en la biomimética, ciencia que resuelve problemas a través de la abstracción, transferencia y aplicación del estudio de modelos biológicos. El diseño propuesto fue aplicado en una púa escarificadora alcanzando un reducción, en promedio, de la fuerza de tracción del 7 % con respecto a la púa lisa. En este caso, se propone aplicar el diseño antiadherente patentado en cuchillas de sembradoras.Instituto de Ingeniería RuralFil: Venturelli, Leonardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; ArgentinaFil: Romito, Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; Argentina. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; ArgentinaFil: Setten, Lorena María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; ArgentinaFil: Roba, Marcos. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; ArgentinaFil: Rocha, Gustavo Ezequiel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; ArgentinaFil: Guillén, Noelia Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Favret, Eduardo A. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
How to improve soil anti-adhesion by studying the micro relief of the cuticle surface of digging beetles: exploring the biodiversity of Argentina as a source of bioinspiration
No full textSome years ago, Tesouro et al. (2018) proposed a possible solution for decreasing adhesion of the soil particles to the surface components of agricultural machinery based on a biological system (biomimetic studies). This has the purpose of reducing the drawing force on the tool with a consequent reduction in fuel consumption. They analyzed the micro topography (micro relief) of the cuticular surface of the Diloboderus abderus (Coleoptera, Scarabaeidae) using a scanning electron microscope (SEM). The main features found on the beetle´s head and pronotum were the presence of dimples, showing a short hair in their center, and distributed randomly. Based on the dimples of the thorax Tesouro et al. designed a macro topography pattern for the upper surface of a steel shovel for tilling (agricultural tool). The results indicated a reduction of the average traction demand of approximately 7% for the biomimetic shovel. Presently, we are exploring the micro relief of the cuticle surface of other beetle species living in Argentina that are considered as true soil diggers to find new anti-adhesion patterns.Fil: Setten, Lorena María. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Sánchez, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Genise, Jorge Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Favret, Eduardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentin
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