Search results for "Micro"

Immunolocalization of an antimicrobial peptide in Ciona intestinalis (Tunicata ) tunic

2009

Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor

2017

In the present work, the design and microfabrication of a tunneling magnetoresistance (TMR) electrical current sensor is presented. After its physical and electrical characterization, a wattmeter is developed to determine the active power delivered to a load from the AC 50/60 Hz mains line. Experimental results are shown up to 1000 W of power load. A relative uncertainty of less than 1.5% with resistive load and less than 1% with capacitive load was obtained. The described application is an example of how TMR sensing technology can play a relevant role in the management and control of electrical energy.

Safety Evaluation of Turbo-Roundabouts with and without Internal Traffic Separations Considering Autonomous Vehicles Operation

2021

The paper presents a microsimulation approach for assessing the safety performance of turbo-roundabouts where Cooperative Autonomous Vehicles “CAVs” have been introduced into the traffic mix alongside conventional vehicles “CVs”. Based on the analysis of vehicle trajectories from VISSIM and subsequent analysis of traffic conflicts through the Surrogate Safety Assessment Model (SSAM), the research aims to evaluate the safety benefits of turbo-roundabouts where the lanes are physically separated by raised curbs, compared to roundabouts without such curbs. The paper will then describe the methodological path followed to build VISSIM models of turbo-roundabouts with and without raised curbs in …

Ecology of Vastedda della valle del Belìce cheeses: A review and recent findings to stabilize the traditional production

2018

The increasing request for classic foods has led to a higher demand for cheeses enjoying a “recognition of quality” status. This phenomenon has also affected Sicilian dairy products, in particular protected designation of origin (PDO) “Vastedda della valle del Belìce” (VdB), a cheese traditionally available only during the summer season, but requested year round. The variations of the microbial populations of raw milk among the seasons influence the microbiological quality of the cheeses produced. This review article reports the historical importance of cheeses and the traditional equipment used for dairy productions in Sicily with a specific focus on VdB. The microbial ecology of this chee…

Working while studying: does it lead to greater attachment to the regional labour market?

2017

This chapter studies the link between working while studying and migration. Understanding this link is important because policy-makers are often calling for actions that would cut down the hours students spend on working to shorten the graduation time. The chapter’s analysis focuses on graduates from Finnish universities, polytechnics and vocational schools in 1991–2004. It uses rich register-based longitudinal microdata constructed by Statistics Finland, and find a negative relationship between working while studying and graduate migration. An increase in student employment can thus partly explain the decline in geographic mobility among Finnish graduates from higher education.

Prompt Determination of the Mechanical Properties of Industrial Polypropylene Sandwich Pipes

2021

A simple and prompt method to determine the mechanical properties of industrial multilayer extrusion polypropylene pipes for a gravity sewer network is suggested. The engineering formulas included for calculating the permissible thickness and relative position of a foam core in the pipes are based on a linear-elastic approximation and the rule of mixtures. The applicability of the approximation was justified experimentally during investigation of the effective tensile characteristics of single- and multilayer pipes and each layer specimen by using traditional tests and finite-element calculations. The results obtained were used to formulate engineering recommendations for calculations of th…

Experimental Evolution Reveals a Genetic Basis for Membrane-Associated Virus Release

2021

Many animal viruses replicate and are released from cells in close association to membranes. However, whether this is a passive process or is controlled by the virus remains poorly understood. Importantly, the genetic basis and evolvability of membrane-associated viral shedding have not been investigated. To address this, we performed a directed evolution experiment using coxsackievirus B3, a model enterovirus, in which we repeatedly selected the free-virion or the fast-sedimenting membrane-associated viral subpopulations. The virus responded to this selection regime by reproducibly fixing a series of mutations that altered the extent of membrane-associated viral shedding, as revealed by fu…

Contrast Enhancement Patterns in Benign Liver Tumors Insonated after Microbubble Contrast Agent Injection: Comparison of Diagnostic Performance of Ba…

2005

Dataset: Growth, morphology and metabolic variables of charophytes (freshwater macroalgae) under different treatments of radiation, temperature and n…

2018

Esta base de datos contiene resultados de dos experimentos (RADxTEMP y RADxNIT) a escala de microcosmos referentes a variables de crecimiento, morfológicas, metabólicas y de composición estequiométrica de 2 especies de macroalgas de agua dulce, concretamente carófitos (Chara hispida y Chara vulgaris) procedentes de dos sistemas (el lago de Somolinos en Guadalajara y el Ullal de Quartons en Castellón), por tanto, 4 poblaciones (2 especies x 2 orígenes). En estos dos experimentos de diseño factorial, los individuos de las 4 poblaciones fueron sometidos a dos niveles de radiación, dos niveles de temperatura (RADxTEMP) y dos niveles de concentración de nitrato (RADxNIT). En esta matriz de datos…

Submerged macrophytes as key players in aquatic ecosystems under global change: a multiscale experimental approach

2020

El actual cambio global está causando alteraciones en los ecosistemas de todo el mundo a través de cambios interactivos en los principales factores ambientales (e.g. la temperatura, la concentración de nutrientes y la radiación ultravioleta). Los ecosistemas acuáticos continentales son altamente vulnerables ante estos cambios y, específicamente, en la región mediterránea, la situación es peor ya que la mayoría de estos sistemas son someros y están expuestos a las perturbaciones ambientales y antrópicas. Las praderas de macrófitos sumergidos y, particularmente, los carófitos, son un elemento conspicuo de estos sistemas con un papel fundamental en su funcionamiento. Estos organismos proveen d…