Search results for "character"

Phase-Sensitive Detection for Optical Sensing With Porous Silicon

2012

We report on a photonic sensor with an ultralow limit of detection (LoD) based on a phase interrogation readout scheme together with an anisotropic porous silicon (PSi) membrane. First, the fabrication of porous free-standing membranes from medium doped (100) surface oriented silicon, with pore diameters suitable for the infiltration of biomolecules, around 50 nm, is reported. Then, the phase interrogation scheme for characterizing the PSi membranes is presented whose results show that while volumetric sensitivity increases with the membrane thickness, the resolution in the birefringence measurements decrease dramatically due to depolarization effects. The best LoD was found to be equal to …

Kolm tegelast poola naljades

2012

Teesid: Kaesoleva artikli eesmark on kirjeldada poola anekdoote kolmest tegelasest, ning anda ulevaade nende ajaloost ja muutumisest. Keskendutakse kolmese ulesehitusega naljadele, mille sisu on muutunud etnilisest ametitega seonduvaks. Artikkel puuab vastata kesksele kusimusele, kui universaalsed voi kultuurispetsiifilised on sellised naljad. Folkloorne ja globaalselt levinud ettekujutus numbri 3 tahendusest pakub samuti huvitavaid sissevaateid kolme tegelasega anekdootide olemusse. Kirjeldatakse stereotuupseid juhte, kus erinevate rahvuste esindajad kaituvad oodataval moel, ning analuusitakse konealuste anekdootide erinevate aspektide – etniliste, poliitiliste, seksuaalsete, loogiliste ja…

BEST-2K Method for Characterizing Dual-Permeability Unsaturated Soils with Ponded and Tension Infiltrometers

2019

This study presents a new method (BEST-2K) that extends the existing BEST methods for use in characterizing the water retention and hydraulic conductivity functions of matrix and fast-flow regions in dual-permeability soils. BEST-2K requires input information from two water infiltration experiments that are performed under ponded (Beerkan) and unsaturated (tension infiltrometer) conditions at the surface. Other required inputs include water content measurements and the traditional BEST inputs (particle size distribution and bulk density). In this study, first, a flowchart of the BEST-2K method was developed and illustrated with analytically generated data for a synthetic dual-permeability s…

Prototyping and Characterization of 1.2KV SIC Schottky Diodes for TWTA Application: The Challenge to Meet the User Specification

2017

River-bed erosion due to changing boundary conditions: performance of a protective measure

2018

Abstract. Due to the introduction of man-made sediment barriers along a river, the amount of sediment load entering the downstream river reach is different to that leaving the reach, and erosion processes occur downstream of the barrier itself. Designers are often required to take into account the scouring process and to include adequate protective measures against the local scour. This paper addresses the performance of bio-engineering protective measures against the erosion process. In particular, a green carpet, realized with real flexible vegetation, has been used as the protective measure against erosion processes downstream of a rigid bed. Analyses are based on experimental work carri…

Semiótica da cidade: corpos, espaços, tecnologias

2015

Resumo:A cidade é feita de espaços, corpos, tecnologias. A semiótica tem estudado há tempos todos estes três fenômenos de significação. Todavia, o estudo semiótico do espaço urbano quase nunca foi articulado pela semiótica dos objetos técnicos, nem pela do corpo. Entrelaçar estes três âmbitos, como este artigo busca fazer, aparece, portanto, como um gesto teórico tão urgente quanto necessário. Nestas páginas analisa-se um velho desenho animado de Walt Disney em que o personagem de Pateta muda radicalmente os próprios programas de ação e paixão, condicionado por estar no espaço urbano, como pedestre ou automobilista. Um ator, dois actantes, e consequentemente, dois espaços de significação di…

Conceptualizing innovation capabilities: A contingency perspective

2017

Empirical research has confirmed that a positive relationship exists between the implementation of innovation activities and the future performance of organizations. Firms utilize resources and capabilities to develop innovations in the form of new products, services or processes. Some firms prove to be better at reproducing innovation success than others, and the capacity to do so is referred to as innovation capability. However, the term innovation capability is ambiguously treated in extant literature. There are several different definitions of the concept and the distinction between innovation capabilities and other types of capabilities, such as dynamic capabilities, is neither explici…

CEUS LI-RADS: a pictorial review

2020

AbstractContrast-enhanced ultrasound (CEUS) greatly improved the diagnostic accuracy of US in the detection and characterization of focal liver lesions (FLLs), and it is suggested and often included in many international guidelines as an important diagnostic tool in the imaging work-up of cirrhotic patients at risk for developing hepatocellular carcinoma (HCC). In particular, CEUS Liver Imaging Reporting and Data System (LI-RADS) provides standardized terminology, interpretation, and reporting for the diagnosis of HCC. The aim of this pictorial essay is to illustrate CEUS features of nodules discovered at US in cirrhotic liver according to LI-RADS categorization.

X-Ray characterization of 3-methyl-6,8-di(2-pyridyl)-[1,2,3]triazolo[5',1':6,1]pyrido[2,3-d]pyrimidine

2005

Abarca Gonzalez, Belen. Belen.Abarca@uv.es ; Ballesteros Campos, Rafael, Rafael.Ballesteros@uv.es ; Chadlaoui, Mimoun, michad@alumni.uv.es ; Ramirez de Arellano Sanchez, Maria del Carmen, Ramirezdearellano@uv.es

An integrated analytical approach to define the compositional and textural features of mortars used in the underwater archaeological site of castrum …

2019

This paper aims to carry out an archaeometric characterization of mortar samples taken from an underwater environment. The fishpond of the archaeological site of Castrum Novum (Santa Marinella, Rome, Italy) was chosen as a pilot site for experimentation. The masonry structures reached the maximum thickness at the apex of the fishpond (4.70 m) and consisted of a concrete conglomerate composed of slightly rough stones of medium size bound with non-hydraulic mortar. After sampling, for a complete characterization of selected mortar fragments, different and complementary techniques (stereomicroscopy, polarizing optical microscopy, and X-ray powder diffraction analysis) were carried out in order…