27 research outputs found
Variabilidad fenotipica y genotipica de poblaciones de Lotus tenuis que habitan suelos con distinto pH
Lotus tenuis es una leguminosa forrajera exótica que crece en forma espontánea en la Depresión del Río Salado (Prov. De Buenos Aires, Argentina) y presenta una gran amplitud ecológica en relación al pH del suelo. Para evaluar si dicha tolerancia está relacionada con la existencia de distintos ecotipos o con una gran plasticidad fenotipica, se realizó un experimento de trasplantes recíprocos en invernáculo con plantas clonadas. Se eligieron 3 poblaciones de L. tenuis que crecían en suelos con pH 6, 7 y 9. Se midieron varios caracteres morfológicos en 4 fechas sucesivas a lo largo de 5 meses. El número de ramificaciones, la longitud de la rama más larga, la relación ancho/largo del folíolo central y el peso seco de la biomasa aérea difirieron entre las poblaciones aun cuando todos los individuos fueron cultivados en un mismo tipo de suelo. Además se encontraron diferencias en la magnitud de la plasticidad entre genotipos de la misma población.Lotus tenuis is an exotic legume which has naturally spread throughout the Flooding Pampa. In order to evaluate if its tolerance to a wide range of soil pH is related to phenotypic plasticity or genetic variation, we conducted a greenhouse experiment of reciprocal transplants using clones. Three populations of L. tenuis originated from soils with pH 6, 7 and 9 were selected. Several morphological characters were measured on four succesive dates during five months. Shoot number, shoot length, the width:length ratio of the central leaflet, and the aboveground biomass were different among populations growing on the same soil type. There were also differences in the magnitud of plasticity among genotypes within the same population
S-LDM: Server Local Dynamic Map for 5G-based Centralized Enhanced Collective Perception
The automotive field is undergoing significant technological advances, which includes making the next generation of autonomous vehicles smarter, greener and safer through vehicular networks, which are often referred to as Vehicle-to-Everything (V2X) communications. Together with V2X, centralized maneuver management services for autonomous vehicles are increasingly gaining importance, as, thanks to their complete view over the road, they can optimally manage even the most complex maneuvers targeting L4 driving and beyond. These services face the challenge of strictly requiring a high reliability and low latency, which are tackled with the deployment at orchestrated Multi-Access Edge Computing (MEC) platforms. In order to properly manage safety-critical maneuvers, these services need to receive a large amount of data from vehicles, even though the useful subset of data is often related to a specific context on the road (e.g., to specific road users or geographical areas). Decoding and post-processing a large amount of raw messages, which are then for the most part filtered, increases the load on safety-critical services, which should instead focus on meeting the deadlines for the actual control and management operations. On this basis, we present an innovative open-source, 5G & MEC enabled service, called Server Local Dynamic Map (S-LDM). The S-LDM is a service that collects information about vehicles and other non-connected road objects using standard-compliant messages. Its primary purpose is to create a centralized dynamic map of the road that can be shared efficiently with other services managing L4 automation, when needed. By doing so, the S-LDM enables these services to widely and precisely understand the current situation of sections of the road, offloading them from the need of quickly processing a large number of messages. After a detailed description of the service architecture, we validate it through extensive laboratory and pilot trials, involving the MEC platforms and production 5G networks of three major European network operations and two Stellantis vehicles equipped with V2X On-Board Units (OBUs). We show how it can efficiently handle high update rates and process each messages in less than few tenths of microseconds. We also provide a complete scalability analysis with details on deployment options, providing insights on where new instances should be created in practical 5G-based V2X scenarios
Protein-Signaled Guided Bone Regeneration Using Titanium Mesh and Rh-BMP2 in Oral Surgery: A Case Report Involving Left Mandibular Reconstruction after Tumor Resection
Recombinant human bone morphogenetic protein-2 (rhBMP-2) is an osteoinductive protein approved for use in oral and maxillofacial defect reconstruction. Growth factors act as mediators of cellular growth on morphogenesis and mythogenesis phases. Utilized as recombinant proteins, these growth factors need the presence of local target cells capable of obtaining the required results. This cell population may be present at the wound site or added to scaffolding material before implantation at the surgical site
Produtividade de híbridos de cebola em função da população de plantas e da fertilização nitrogenada e potássica
Adaptability and stability of pepper hybrids under conventional and organic production systems
A global point prevalence survey of antimicrobial use in neonatal intensive care units: The no-more-antibiotics and resistance (NO-MAS-R) study
Background: Global assessment of antimicrobial agents prescribed to infants in the neonatal intensive care unit (NICU) may inform antimicrobial stewardship efforts. Methods: We conducted a one-day global point prevalence study of all antimicrobials provided to NICU infants. Demographic, clinical, and microbiologic data were obtained including NICU level, census, birth weight, gestational/chronologic age, diagnoses, antimicrobial therapy (reason for use; length of therapy), antimicrobial stewardship program (ASP), and 30-day in-hospital mortality. Findings: On July 1, 2019, 26 of infants (580/2,265; range, 0�100; median gestational age, 33 weeks; median birth weight, 1800 g) in 84 NICUs (51, high-income; 33, low-to-middle income) from 29 countries (14, high-income; 15, low-to-middle income) in five continents received �1 antimicrobial agent (92, antibacterial; 19, antifungal; 4, antiviral). The most common reasons for antibiotic therapy were �rule-out� sepsis (32) and �culture-negative� sepsis (16) with ampicillin (40), gentamicin (35), amikacin (19), vancomycin (15), and meropenem (9) used most frequently. For definitive treatment of presumed/confirmed infection, vancomycin (26), amikacin (20), and meropenem (16) were the most prescribed agents. Length of therapy for culture-positive and �culture-negative� infections was 12 days (median; IQR, 8�14) and 7 days (median; IQR, 5�10), respectively. Mortality was 6 (42, infection-related). An NICU ASP was associated with lower rate of antibiotic utilization (p = 0·02). Interpretation: Global NICU antibiotic use was frequent and prolonged regardless of culture results. NICU-specific ASPs were associated with lower antibiotic utilization rates, suggesting the need for their implementation worldwide. Funding: Merck & Co.; The Ohio State University College of Medicine Barnes Medical Student Research Scholarship © 2021 The Author