نتایج جستجو برای: spad index

تعداد نتایج: 397153  

2011
Juan Mata Pavia Cristiano Niclass Claudio Favi Martin Wolf Edoardo Charbon

A new imager for 3D near-infrared imaging has been designed based on a single-photon avalanche diode (SPAD) imager with 128x128 pixels capable of performing time-resolved measurements with a resolution of 97ps. The imager linearity has been improved to make more accurate measurements. A new optical setup has been implemented in order to prove the suitability of this kind of sensors for this app...

This work presents a dual-junction, single-photon avalanche diode (SPAD) with electrical μ-lens designed and simulated in 90 nm standard complementary metal oxide semiconductor (CMOS) technology. The evaluated structure can collect the photons impinging beneath the pixel guard ring, as well as the pixel active area. The fill factor of the SPAD increases from 12.5% to 42% in comparison with simi...

Journal: :Pesquisa Agropecuária Tropical 2021

ABSTRACT Portable chlorophyll meters can be used to improve the prediction of nitrogen (N) doses for common bean. This study aimed evaluate two (Minolta SPAD-502 and ClorofiLOG CFL 1030) predict topdressing N Pérola, TAA Gol BRSMG Uai cultivars VR 20 line. Eight field experiments (four genotypes devices) were carried out in a randomized blocks design, with four replicates, being treatments appl...

Journal: :Revista Brasileira de Engenharia Agricola e Ambiental 2021

ABSTRACT The ornamental sunflower has great importance in the floriculture sector due to color and vitality of its flowers. However, production quality flowers decrease under salt stress, which can be mitigated with paclobutrazol application. objective present study was evaluate effects different application methods ‘Sol Noturno’ irrigated brackish waters. experimental design randomized blocks ...

2013
Vassilios Papadopoulos Anna Karagianni Vaia Papageorgiou Maria Topalidou Panagiotis Patinakis Fotios Girtovitis Despina Pantelidou Anna Kioumi

Sickle-cell intrahepatic cholestasis (SCIC) is an uncommon complication of sickle-cell disease (SCD), which can be life-threating if left untreated. We present the case of a 28-year-old man with SCD, who presented with jaundice and abdominal pain, one month after hydroxyurea discontinuation. Laboratory investigation revealed solely increased serum bilirubin, mainly conjugated, and imaging studi...

Journal: :Biosensors & bioelectronics 2008
Ramiz Daniel Ronen Almog Amit Ron Shimshon Belkin Yosi Shacahm Diamand

Whole-cell biosensors are potential candidates for on-line and in situ environmental monitoring. In this work we present a new design of a whole-cell bioluminescence biosensor for water toxicity detection, based on genetically engineered Escherichia coli bacteria, carrying a recA::luxCDABE promoter-reporter fusion. Sensitive optical detection is achieved using a single photon avalanche photodio...

Journal: :Journal of Lightwave Technology 2021

Photon counting detectors such as single-photon avalanche diode (SPAD) arrays can be employed to achieve reliable optical wireless communication at power limited regimes. However, SPAD-based receivers suffer from significant dead-time induced intersymbol interference (ISI) especially when the incident photon rate is relatively high and dead time comparable or even larger than symbol duration, i...

Journal: :Optics express 2010
Mohammad Azim Karami Marek Gersbach Hyung-June Yoon Edoardo Charbon

We report on the first implementation of a single-photon avalanche diode (SPAD) in 90nm complementary metal oxide semiconductor (CMOS) technology. The detector features an octagonal multiplication region and a guard ring to prevent premature edge breakdown using a standard mask set exclusively. The proposed structure emerged from a systematic study aimed at miniaturization, while optimizing ove...

2014
Hae Joo Kang Neil G. Paterson Chae Un Kim Martin Middleditch Chungyu Chang Hung Ton-That Edward N. Baker

The Gram-positive organism Corynebacterium diphtheriae, the cause of diphtheria in humans, expresses pili on its surface which it uses for adhesion and colonization of its host. These pili are covalent protein polymers composed of three types of pilin subunit that are assembled by specific sortase enzymes. A structural analysis of the major pilin SpaD, which forms the polymeric backbone of one ...

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