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Impact of the pandemic on the teaching and research staff at a technological university in Spain: deepening the gender gap
(2022-05-25)
Article
Open AccessThe alteration of the educational model caused by the COVID-19 pandemic has not affected all university faculty equally. This work explores the academic, digital and gender inequalities caused by the pandemic on the teaching ... -
Multichannel QCM-based system for continuous monitoring of bacterial biofilm growth
(2020-06)
Article
Open AccessQuartz crystal microbalance (QCM) sensors are becoming a good alternative to analytical methods for the measurement of bacterial growth in liquid media culture. For this purpose, two essential resonance parameters allow ... -
Design and implementation of an ultrasonic sensor for rapid monitoring of industrial malolactic fermentation of wines
(2017-12-19)
Article
Open AccessUltrasound is an emerging technology that can be applied to monitor food processes. However, ultrasonic techniques are usually limited to research activities within a laboratory environment and they are not extensively ... -
Zero-flow offset variation in ultrasonic clamp-on flowmeters due to inhomogeneity and nonlinearity of pipe materials
(2017-11)
Article
Restricted access - publisher's policyThe objective of this paper is to measure the zero-flow offset variation in ultrasonic Clamp-on flowmeters produced by using pipes made of materials with a nonhomogeneous and nonlinear behavior. The evaluation of this ... -
A novel distributed fiber-optic strain sensor
(2002-08)
Article
Restricted access - publisher's policyThe theory of operation of a fiber-optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to ... -
Quartz crystal microbalance holder design for on-line sensing in liquid applications
(2016-05)
Article
Open AccessIn this paper, the design of a QCM sensor for liquid media measurements in vertical position is described. A rugged and low-cost proof holder has been designed, the cost of which is significantly lower than those ... -
Temperature compensation of ultrasonic velocity during the malolactic fermentation process
(2015-11-04)
Article
Open AccessUltrasonic properties of materials present a strong dependence on temperature and in turn the ultrasonic velocity of propagation in the material under test. It is precisely for this reason that most ultrasonic measurements ... -
Ultrasonic velocity of water-ethanol-malic acid-lactic acid mixtures during the malolactic fermentation process
(Elsevier, 2015-03)
Article
Open AccessDuring malolactic fermentation in wines, malic acid is transformed into lactic acid by the action of lactic acid bacteria. This process can be monitored on-line by measuring the velocity of a low intensity ultrasonic wave ... -
Ultrasonic monitoring of malolactic fermentation in red wines
(2014-08-01)
Article
Restricted access - publisher's policyThe progress of malolactic fermentation in red wines has been monitored by using ultrasonic techniques. The evolution of ultrasonic velocity of a tone burst 1 MHz longitudinal wave was measured, analyzed and compared to ... -
Study of the effect of angle errors in conical ultrasonic sensors
(2013-09-01)
Article
Restricted access - publisher's policyMany ultrasonic sensors intended for non-destructive testing include a plastic or metal element, known as buffer rod, between the ultrasonic transducer and the material under analysis. Buffer rods are often terminated in ... -
Resizing buffer rods for ultrasound testing of food products with acoustic noise considerations
(2013-01)
Article
Restricted access - publisher's policyBuffer rods can be used to perform non-destructive and on-line analysis of food and beverage products. These rods, usually solid cylinders, can be long and heavy for certain applications. In this paper, a resizing analytic ... -
Ultrasonic inspection system for powder metallurgy parts
(2013-04)
Article
Restricted access - publisher's policyThe demand for powder metallurgy (P/M) parts in its traditional automotive market is predicted to grow, but future sector expansion depends directly upon its capability to manufacture zero-defect parts for industries such ...
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