Buscar
Mostrando ítems 1-10 de 64
Artículo
β-Hydrogen Elimination Reactions of Nickel and Palladium Methoxides Stabilised by PCP Pincer Ligands
(John Wiley & Sons, 2015)
Nickel and palladium methoxides [((iPr)PCP)M-OMe], which contain the (iPr)PCP pincer ligand, decompose upon heating to give products of different kinds. The palladium derivative cleanly gives the dimeric Pd(0) complex ...
Artículo
Background Digital Calibration of Comparator Offsets in Pipeline ADCs
(Institute of Electrical and Electronics Engineers, 2015)
This brief presents a low-cost digital technique for background calibration of comparator offsets in pipeline analog-to-digital converters (ADCs). Thanks to calibration, comparator offset errors above half the stage ...
Ponencia
1.2V, 1.96mW @ 2.4GHz CMOS-90nm switched-transconductor mixer
(2010)
This paper presents the design of a fully differential double balanced switched transconductor mixer for ZigBee applications in the 2.4GHz band. It provides programmable conversion gain by using an active load stage. ...
Artículo
Analog sinewave signal generators for mixed-signal built-in test applications
(Springer, 2011)
This work presents a technique for the generation of analog sinusoidal signals with high spectral quality and reduced circuitry resources. Two integrated demonstrators are presented to show the feasibility of the approach. ...
Ponencia
RTD based logic circuits using generalized threshold gates
(2008)
Many logic circuit applications of Resonant Tunneling Diodes are based on the MOnostable-BIstable Logic Element (MOBILE). Threshold logic is a computational model widely used in the design of MOBILE circuits, i.e. these ...
Ponencia
Bifurcation Diagrams in MOS-NDR Frequency Divider Circuits
(Instituto Nacional de Astrofísica, Óptica y Electrónica; Universidad de Sevilla, 2012-03)
The behavior of a circuit able to implement frequency division is studied. It is composed of a block with an IV characteristic exhibiting Negative Differential Resistance (NDR) built from MOS transistors plus an inductor ...
Artículo
Specific Heat Measurements on Amorphous and Nanocrystalline Al88Y5Ni5Co2
(Elsevier, 2009)
Specific heat at constant pressure, CP, was measured on amorphous and nanocrystalline Al88Y5Ni5Co2 alloys from differential scanning calorimetry experiments. Linear behavior of CP versus temperature from 323 to 423 K is ...
Artículo
Exalted photocatalytic activity of tetragonal BiVO4 by Er 3+ doping through a luminescence cooperative mechanism
(Royal Society of Chemistry (Great Britain), 2014)
Er-doped BiVO4 are synthesized by means of a surfactant free microwave assisted hydrothermal method having good photoactivities under sun-like excitation for the degradation of methylene blue. From the structural and ...
Artículo
Is indoor overheating an upcoming risk in southern Spain social housing stocks? Predictive assessment under a climate change scenario
(Elsevier, 2022-01)
Beyond thermal comfort, the future outlook of climate change poses a challenge for the health of the most vulnerable inhabitants of the existing residential stock. In southern Spain specifically there is extensive social ...
Artículo
Suggested Readings in Continuum Mechanics and Earthquake Seismology
(Seismological Society of America, 2009-05)
Rotational seismology is a newly emerging field of interest to scientists from widely differing disciplines.We compile here some suggested readings for those wishing to become familiar with disciplines relevant to rotational ...