Search results for "CDE"

Global age-sex-specific fertility, mortality, healthy life expectancy (HALE), and population estimates in 204 countries and territories, 1950–2019: a…

2020

Background Accurate and up-to-date assessment of demographic metrics is crucial for understanding a wide range of social, economic, and public health issues that affect populations worldwide. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 produced updated and comprehensive demographic assessments of the key indicators of fertility, mortality, migration, and population for 204 countries and territories and selected subnational locations from 1950 to 2019. Methods 8078 country-years of vital registration and sample registration data, 938 surveys, 349 censuses, and 238 other sources were identified and used to estimate age-specific fertility. Spatiotemporal Gaussian…

Lumped parameter approach of nonlinear networks with transistors

1991

In this chapter we study the lumped parameter modelling of a large class of circuits composed of bipolar transistors, junction diodes and passive elements (resistors, capacitors, inductors). All these elements are nonlinear: the semiconductor components are modelled by “large signal” equivalent schemes, the capacitors and inductors have monotone characteristics while the resistors can be included in a multiport which also has a monotone description.

Nanorings and rods interconnected by self-assembly mimicking an artificial network of neurons

2013

[EN] Molecular electronics based on structures ordered as neural networks emerges as the next evolutionary milestone in the construction of nanodevices with unprecedented applications. However, the straightforward formation of geometrically defined and interconnected nanostructures is crucial for the production of electronic circuitry nanoequivalents. Here we report on the molecularly fine-tuned self-assembly of tetrakis-Schiff base compounds into nanosized rings interconnected by unusually large nanorods providing a set of connections that mimic a biological network of neurons. The networks are produced through self-assembly resulting from the molecular conformation and noncovalent intermo…

Single electron transistor fabricated on heavily doped silicon-on-insulator substrate

2001

Experiments on side-gated silicon single electron transistors (SET) fabricated on a heavily doped thin silicon-on-insulator substrate are reported. Some of the devices showed single-island-like and some multi-island-like behaviour, but the properties of individual samples changed with time. Single-electron gate modulation was observable up to T=100 K, at least. A slow response of SET current to a large change in gate voltage was observed, but the process speeded up under illumination.

Controlling the mode of operation of organic transistors through side chain engineering

2016

Electrolyte-gated organic transistors offer low bias operation facilitated by direct contact of the transistor channel with an electrolyte. Their operation mode is generally defined by the dimensionality of charge transport, where a field-effect transistor allows for electrostatic charge accumulation at the electrolyte/semiconductor interface, whereas an organic electrochemical transistor (OECT) facilitates penetration of ions into the bulk of the channel, considered a slow process, leading to volumetric doping and electronic transport. Conducting polymer OECTs allow for fast switching and high currents through incorporation of excess, hygroscopic ionic phases, but operate in depletion mode…

CNT-based RFID passive gas sensor

2011

Summary form only given, as follows. Single-wall carbon nanotube (CNT) is examined for the design of a passive and maintenance-free wireless RFID sensor. CNT buckypaper is characterized from a dielectric and a sensitivity point of view, using an indirect way, by using antenna measurement and simulations in a controlled medium. A CNT-based prototype RFID tag is then described as the featured maintenance free sensor and experimentally verified for its applicability and sensitivity towards NH3.

Los procedimientos para la solución de controversias en el Mercosur

2006

1. EVOLUCIÓN HISTÓRICA DE LOS PROCEDIMIENTOS DE SOLUCIÓN DE CONTROVERSIAS EN EL MERCOSUR. 1.1. El Tratado de Asunción. 1.2. El Protocolo de Brasilia. 1.3. El Protocolo de Ouro Preto. 2. HACIA EL PROTOCOLO DE OLIVOS. 3. EL PROTOCOLO DE OLIVOS PARA LA SOLUCIÓN DE CONTROVERSIAS EN EL MERCOSUR. 3.1. La solución de controversias entre Estados partes. 3.1.1. Los procedimientos previstos para su solución. 3.1.2. El procedimiento de revisión. 3.1.3. Los laudos arbitrales y las medidas compensatorias. 3.2. La solución de los reclamos de particulares. 4. CONSIDERACIONES FINALES

Coronectomy - An alternative approach to remove impacted teeth in oncological patients.

2018

Background Coronectomy involves the section of the tooth crown leaving the roots in the socket. Possibility of inferior alveolar nerve injury and mandibular fracture are the main indications for this approach. Herein, we describe a case series of coronectomy to highlight its indication in normal and oncological patients. Material and methods A total of 9 patients were submitted to coronectomy, 6 of them were oncological. Three patients were evaluated before head and neck radiotherapy (HNRT), 2 after HNRT and 1 before bone marrow transplantation. Results Mean age of the patients was 49 years, most of them male (n=7). Lower third molars were the main teeth that received this procedure, and al…

Mundialización y posmodernidad

1998

Mercosur entre mundialización y nacionalismos

2000

Versión corta e inédita del artículo "Mercosur y la otra mundialización" (en: El País, 5 de octubre de 2000) destinada a la Embajada de España en Paraguay.