Juvenal Alarcon

Learn More
Studies dealing with the electromyographic activity of masticatory muscles in patients with unilateral posterior crossbite are infrequent. The purpose of this study was to assess the electromyographic pattern of masticatory muscles at rest position, during swallowing, and during mastication, in 30 subjects with right posterior crossbite and to compare them(More)
It is generally assumed that children with posterior crossbites have abnormal mandibular movements; however, this assumption has not been clearly evaluated. The purpose of this investigation was to study the movements and the resting position of the mandible in 2 samples of 30 subjects, one aged 10 to 14 years with right posterior crossbite, the other aged(More)
Wearable textile systems are nowadays a fast growing field. Besides lower prices, wearable tags antenna have to resist laundry cycles which means high pressure, high temperature and humidity. This paper introduces a novel RFID textile tag antenna, made of two distinct antennas coupled together to protect UHF RFID system from environment stress : a circular(More)
This paper presents the design and prototyping of a low profile circularly polarized antenna for UHF RFID readers. This antenna has a very low profile, a low cost structure and is composed of two dipoles with 90° phase shift. In addition, to reduce the back beam radiation an artificial magnetic conductor surface (AMC) witch introduce a 0° of(More)
The aim of this randomised prospective study was to evaluate the effects of slow maxillary expansion with expansion plates and Hyrax expanders on the kinematics of the mandible after cross-bite correction. Thirty children (15 boys and 15 girls), aged 7·1-11·8, with unilateral cross-bite and functional shift were divided into two groups: expansion plate (n =(More)
This paper presents the design and fabrication of a flexible tag for UHF RFID application in harsh environments. The proposed flexible tag has good performances when it is attached to non-metallic objects. Besides, after dipping in the water and in the chemical agents many times, the tag performances remain unmodified. Moreover, thanks to the protective(More)
This paper presents the design of a UHF RFID reader antenna for metallic environments. The design is based on the constructive wave phenomenon and on the use of a dipole antenna which provides a linear polarization parallel to its ground plane. In addition, the proposed antenna can be placed on metallic surfaces without impedance mismatch. The overall(More)
  • 1