Publications by authors named "Sergio Salazar"

Article Synopsis
  • * The control algorithm addresses the challenges of model uncertainties and external disturbances that can affect the interaction between the patient and the exoskeleton.
  • * Validation of the ANN-based control approach is achieved through both numerical simulations and experimental tests.
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Bassinosteroids (BRs) can induce plant defence responses and promote plant growth. In this work, we evaluated the effect of a natural (EP24) and a synthetic (BB16) brassinosteroid on strawberry (Fragaria vesca ) plants exposed to saline stress. Treated plants showed higher shoot dry weight and root growth compared to untreated control plants.

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This paper proposes a new sensor using optical flow to stabilize a quadrotor when a GPS signal is not available. Normally, optical flow varies with the attitude of the aerial vehicle. This produces positive feedback on the attitude control that destabilizes the orientation of the vehicle.

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Detecting people in images and videos captured from an aerial platform in wooded areas for search and rescue operations is a current problem. Detection is difficult due to the relatively small dimensions of the person captured by the sensor in relation to the environment. The environment can generate occlusion, complicating the timely detection of people.

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Atxurra cave has a decorated assemblage composed of more than a hundred engraved animal depictions. All of them are located in deep parts of the cave and most of them are hidden in raised areas, away from the main path. The main sector is the "Ledge of the Horses", located at 330 m from the entrance of the cave.

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This paper presents the development of an instrumented exoskeleton with baropodometry, electromyography, and torque sensors. The six degrees of freedom (Dof) exoskeleton has a human intention detection system based on a classifier of electromyographic signals coming from four sensors placed in the muscles of the lower extremity together with baropodometric signals from four resistive load sensors placed at the front and rear parts of both feet. In addition, the exoskeleton is instrumented with four flexible actuators coupled with torque sensors.

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The usage of socially assistive robots for autism therapies has increased in recent years. This novel therapeutic tool allows the specialist to keep track of the improvement in socially assistive tasks for autistic children, who hypothetically prefer object-based over human interactions. These kinds of tools also allow the collection of new information to early diagnose neurodevelopment disabilities.

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Macrophomina phaseolina, is a pathogenic soil-borne fungus that affects more than 500 plant species, causing various types of disease to several crops, among which is the crown and root rot disease in strawberry. Its wide variability has been characterized reiteratively in the literature, but little is known about its virulence mechanisms. Morphological, physiological, genetic and phytopathogenic parameters were evaluated among 32 isolates of Macrophomina from different hosts occurring in Argentina and Spain.

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Background And Aims: Plants have evolved complex mechanisms to fight against pathogens. Among these mechanisms, pattern-triggered immunity (PTI) relies on the recognition of conserved microbe- or pathogen-associated molecular patterns (MAMPs or PAMPs, respectively) by membrane-bound receptors. Indeed, PTI restricts virus infection in plants and, in addition, BRI1-associated kinase 1 (BAK1), a central regulator of PTI, plays a role in antiviral resistance.

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To evaluate the natural occurrence of the plant growth-promoting bacterium Azospirillum brasilense and petunia plants, local strains were isolated and characterized by biochemical and molecular methods. Three strains were assessed in greenhouse conditions using Petunia × hybrida Ultra™. Treatments: Plants without bacterial inoculation or chemical fertilization; fertilized with NPK and KNO ; and independently inoculated with the strains 2A1, 2A2, and 2E1 by submerging their roots in a bacterial suspension (~10  CFU·ml ).

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The renewal of the archaeological record, mainly through the discovery of unpublished sites, provides information that sometimes qualifies or even reformulates previous approaches. One of the latter cases is represented by the three new decorated caves found in 2015 in Aitzbitarte Hill. Their exhaustive study shows the presence of engraved animals, mainly bison, with formal characteristics unknown so far in the Palaeolithic art of the northern Iberian Peninsula.

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The main goal of this study is developing an adaptive controller which can solve the trajectory tracking for a class of quadcopter unmanned aerial system (UAS), namely a quadrotor. The control design introduces a new paradigm for adaptive controllers based on the implementation of a set of differential neural networks (DNNs) in the consequence section of a Takagi-Sugeno (T-S) fuzzy inference system. This dynamic fuzzy inference structure was used to approximate the UAS description.

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Denitrification in the soybean endosymbiont is controlled by a complex regulatory network composed of two hierarchical cascades, FixLJ-FixK-NnrR and RegSR-NifA. In the former cascade, the CRP/FNR-type transcription factors FixK and NnrR exert disparate control on expression of core denitrifying systems encoded by , , , and genes in response to microoxia and nitrogen oxides, respectively. To identify additional genes controlled by NnrR and involved in the denitrification process in , we compared the transcriptional profile of an mutant with that of the wild type, both grown under anoxic denitrifying conditions.

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During a study on biodiversity of bacteria inhabiting rhizospheric soil of rockrose ( L.), we isolated a strain coded RD25 in a soil from Northern Spain. The 16S rRNA gene sequence showed 99.

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A bacterial strain, designated BC09, was isolated from a contaminated sample of condensed milk. Phylogenetic analyses based on 16S rRNA gene sequences placed strain BC09 into the genus Bacillus with its closest relatives being Bacillus safensis and Bacillus australimaris with 100 and 99.9 % similarity, respectively.

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Acidovorax spp. cause a wide range of economically important diseases in monocotyledonous and dicotyledonous plants, including sugarcane, corn, rice, oat, millet, foxtail watermelon, and orchid. In Argentina, the red stripe disease of sugarcane caused by Acidovorax avenae affects 30% of the milling stems with important economic losses.

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The genome sequence of a plant growth-promoting bacterium and biocontrol agent, REC3, isolated from strawberry roots, is reported here. The REC3 total genome contains 7,229,924 bp and has a G+C content of 68.7 mol%.

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Introduction: Anthropometry and functional fitness (FF) are fundamental aspects for functional independence conservation of older adults (OA). However, little has been investigated in chilean OA.

Objective: To analyze anthropometric and FF characteristics of non-disabled OA.

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The species Arthrobacter viscosus was isolated from soil from Guatemala and it was classified into the genus Arthrobacter on the basis of phenotypic traits. Nevertheless, the results of16S rRNA gene analysis indicated that this species is a member of the genus Rhizobium, with Rhizobium alamii GBV016T and Rhizobium mesosinicum CCBAU 25010T as the most closely related species with 99.64 and 99.

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In this study we analysed three bacterial strains coded L10.10, A4R1.5 and A4R1.

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Multiple-choice questions are a gold-standard tool in medical school for assessment of knowledge and are the mainstay of licensing examinations. However, multiple-choice questions items can be criticized for lacking the ability to test higher-order learning or integrative thinking across multiple disciplines. Our objective was to develop a novel assessment that would address understanding of pathophysiology and pharmacology, evaluate learning at the levels of application, evaluation and synthesis, and allow students to demonstrate clinical reasoning.

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Red stripe of sugarcane in Argentina is a bacterial disease caused by Acidovorax avenae. The genome sequence from the first isolate of this bacterium in Argentina is presented here. The draft genome of the A.

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Article Synopsis
  • The study focused on two bacterial strains, BSTT30 and BSTT40, found in potatoes from Salamanca, Spain, and analyzed their genetic and phenotypic characteristics to classify them.
  • Both strains showed a high degree of genetic similarity (98.4%) to known relatives but were distinct enough to be classified as a new species, which is proposed to belong to the genus.
  • Additional tests indicated that these strains are oxidas-negative, ferment glucose without gas, can grow in high temperatures and alkaline conditions, and have unique fatty acid profiles, reinforcing their classification as a novel species with the name sp. nov.
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