A 1.6Gb/s CMOS LVDS Transmitter with a Programmable Pre-Emphasis System

A 12 parallel low voltage differential signaling (LVDS) transmitter fabricated in 0.13 μm CMOS is presented. Each LVDS channel can operate over 1.6 Gb/s and includes a programmable pre-emphasis circuit designed to reduce the data-dependent jitter (DDJ) caused by different lengths of PCB traces. Experimental results of the fabricated LVDS confirm the correct operation of the programmable pre-equalization circuit. The power consumption and area per channel is less than 20 mW and 0.084 mm2, respectively.http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6820268Fil: Reyes, Benjamín T. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Laboratorio de Comunicaciones Digitales; Argentina.Fil: Paulina, German. Fundación Fulgor; Argentina.Fil: Tealdi, Lucas. Fundación Fulgor; Argentina.Fil: Labat, Emanuel. Fundación Fulgor; Argentina.Fil: Sanchez, Raúl. Fundación Fulgor; Argentina.Fil: Mandolesi, Pablo S. Universidad Nacional del Sur. GISEE – LMNE; Argentina.Fil: Hueda, Mario R. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Laboratorio de Comunicaciones Digitales; Argentina.Telecomunicacione

Coupling sequencing by hybridization (SBH) with gel sequencing for an inexpensive analysis of genes and genomes

The speed and cost of DNA sequencing are bottlenecks in the analysis of genes end genomes. Sequencing by hybridization (SBH) is a versatile method with several applications which can accelerated DNA screening, mapping and sequencing. Requirements, achievements and problems in the development of the SBH format 1 (DNA samples arrayed) are presented and schemes for its synergetic coupling with gel sequencing techniques are discussed. It appears that by one hybridization machine with 24 boxes and four ABI gel sequencers 100- 300 Mb of DNA sequence can be determined per year. Various genetic studies based on computer assisted analysis of large collections of partial or complete DNA sequences (`sequenetics`) may be achieved in this century

Stability and Electronic Properties of TiO2 Nanostructures With and Without B and N Doping

We address one of the main challenges to TiO2-photocatalysis, namely band gap narrowing, by combining nanostructural changes with doping. With this aim we compare TiO2's electronic properties for small 0D clusters, 1D nanorods and nanotubes, 2D layers, and 3D surface and bulk phases using different approximations within density functional theory and GW calculations. In particular, we propose very small (R < 0.5 nm) but surprisingly stable nanotubes with promising properties. The nanotubes are initially formed from TiO2 layers with the PtO2 structure, with the smallest (2,2) nanotube relaxing to a rutile nanorod structure. We find that quantum confinement effects - as expected - generally lead to a widening of the energy gap. However, substitutional doping with boron or nitrogen is found to give rise to (meta-)stable structures and the introduction of dopant and mid-gap states which effectively reduce the band gap. Boron is seen to always give rise to n-type doping while depending on the local bonding geometry, nitrogen may give rise to n-type or p-type doping. For under coordinated TiO2 surface structures found in clusters, nanorods, nanotubes, layers and surfaces nitrogen gives rise to acceptor states while for larger clusters and bulk structures donor states are introduced

Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh

In this study continuous wavelet transforms are used to explore spatio-temporal patterns of multi-scale bank line retreat along a 204 km reach of the Jamuna River, Bangladesh. A sequence of eight bank line retreat series, derived from remotely-sensed imagery for the period 1987-1999, is transformed using the Morlet mother wavelet. Bank erosion is shown to operate at several characteristic spatial and temporal scales. Local erosion and bank line retreat are shown to occur in short, well defined reaches characterised by temporal persistence at the same location, and separated by relatively stable reaches. In contrast, evidence of downstream propagation of bank line retreat patterns is evident at larger spatial scales. The intensity of localised bank line retreat (i.e. at scales of 0 - 20 km) is strongly related to the magnitude of monsoonal peak discharge, but this relationship weakens as the spatial scale of erosion increases. The potential of continuous wavelet analysis to enhancing our understanding of morphological evolution in complex fluvial systems with multi-channel planforms is discussed

Absence of cardiotrophin 1 is associated with decreased age-dependent arterial stiffness and increased longevity in mice

Cardiotrophin 1 (CT-1), an interleukin 6 family member, promotes fibrosis and arterial stiffness. We hypothesized that the absence of CT-1 influences arterial fibrosis and stiffness, senescence, and life span. In senescent 29-month- old mice, vascular function was analyzed by echotracking device. Arterial histomorphology, senescence, metabolic, inflammatory, and oxidative stress parameters were measured by immunohistochemistry, reverse transcription polymerase chain reaction, Western blot, and ELISA. Survival rate of wild-type and CT-1–null mice was studied. Vascular smooth muscle cells were treated with CT-1 (10 −9 mol/L) for 15 days to analyze senescence. The wall stress-incremental elastic modulus curve of old CT-1–null mice was shifted rightward as compared with wild-type mice, indicating decreased arterial stiffness. Media thickness and wall fibrosis were lower in CT-1–null mice. CT-1–null mice showed decreased levels of inflammatory, apoptotic, and senescence pathways, whereas telomere-linked proteins, DNA repair proteins, and antioxidant enzyme activities were increased. CT-1–null mice displayed a 5-month increased median longevity compared with wild-type mice. In vascular smooth muscle cells, chronic CT-1 stimulation upregulated apoptotic and senescence markers and downregulated telomere-linked proteins. The absence of CT-1 is associated with decreased arterial fibrosis, stiffness, and senescence and increased longevity in mice likely through downregulating apoptotic, senescence, and inflammatory pathways. CT-1 may be a major regulator of arterial stiffness with a major impact on the aging proces

Contribution to the understanding of tribological properties of graphite intercalation compounds with metal chloride

Intrinsic tribological properties of lamellar compounds are usually attributed to the presence of van der Waals gaps in their structure through which interlayer interactions are weak. The controlled variation of the distances and interactions between graphene layers by intercalation of electrophilic species in graphite is used in order to explore more deeply the friction reduction properties of low-dimensional compounds. Three graphite intercalation compounds with antimony pentachloride, iron trichloride and aluminium trichloride are studied. Their tribological properties are correlated to their structural parameters, and the interlayer interactions are deduced from ab initio bands structure calculations

Enseñanza de maniobras de reanimación cardiopulmonar a familiares y cuidadores de niños con mayor riesgo

En el Centro de Simulación Sim Ludovica se realiza desde el año 2016 el curso de reanimación cardiopulmonar (RCP) para familiares y cuidadores. Surgió con la necesidad de dar de alta hospitalaria a pacientes con problemas crónicos (cardíacos, neurológicos, respiratorios, etc.) que requieren internación prolongada en terapia intensiva y/o intermedia, algunos de los cuales deben continuar con internación domiciliaria. La mayoría de las veces, las situaciones de emergencias ocurren en el hogar u otro sitio lejos de los Centros de Salud. Estos niños tienen muchas más probabilidades de sobrevivir si alguien en forma inmediata les realiza maniobras de RCP. Esto nos impulsó a entrenar en maniobras de RCP a los familiares y cuidadores de los niños internados con riesgo elevado de presentar este tipo de eventos. Se trata de un taller de 2 horas de duración y la entrega de un manual o guía que resume los conceptos aplicados en la práctica.In the Sim Ludovica Simulation Center, the cardiopulmonary resuscitation (CPR) course for family and caregivers has been carried out since 2016. It arose from the need to discharge patients with chronic problems (cardiac, neurological, respiratory, etc.) who require prolonged hospitalization in intensive or intermediate therapy, some of them must continue with home care. Most of the time, emergency situations occur at home or elsewhere away from health centers. These children are much more likely to survive if someone immediately performs CPR maneuvers. This prompted us to train the relatives and caregivers of inpatients with high risk of presentation in CPR mandrels. presenting this type of events. It is a 2-hour workshop and the delivery of a manual or guide that summarizes the concepts applied in practice

Generalized partially linear models on Riemannian manifolds

We introduce generalized partially linear models with covariates on Riemannian manifolds. These models, like ordinary generalized linear models, are a generalization of partially linear models on Riemannian manifolds that allow for scalar response variables with error distribution models other than a normal distribution. Partially linear models are particularly useful when some of the covariates of the model are elements of a Riemannian manifold, because the curvature of these spaces makes it difficult to define parametric models. The model was developed to address an interesting application: the prediction of children's garment fit based on three‐dimensional scanning of their bodies. For this reason, we focus on logistic and ordinal models and on the important and difficult case where the Riemannian manifold is the three‐dimensional case of Kendall's shape space. An experimental study with a well‐known three‐dimensional database is carried out to check the goodness of the procedure. Finally, it is applied to a three‐dimensional database obtained from an anthropometric survey of the Spanish child population. A comparative study with related techniques is carried out

Evaluación de acolchados para el control de la flora arvense en un cultivo de tomate

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