Results 51 to 60 of about 46,487 (202)
A novel active quenching circuit for single photon detection with Geiger mode avalanche photodiodes
, 2008 In this paper we present a novel construction of an active quenching circuit intended for single photon detection. For purpose of evaluation, we have combined this circuit with a standard avalanche photodiode C30902S to form a single photon detector.
Brown +16 more
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Evaluation of Optical Chlorophyll Meters as Proxy for Nitrogen in Theobroma cacao L.
Journal of the American Society for Horticultural ScienceLeaf nitrogen (N) and leaf chlorophyll concentrations are key indicators of a plant’s nutritional status. For many crops, readings from simple optical methods for estimating chlorophyll correlate well with laboratory-based chlorophyll extraction methods.
Maya Weinstein, Shahar Baram, Uri Yermiyahu, Ludmila Tsehansky, Or Sperling, Ellen R. Graber
doaj +1 more source
SpAds: political sherpas bridging minister and civil servant [PDF]
, 2020 This paper examines how opinion-shaping political and civil service stakeholders view the role and contribution of Special Political Advisers (SpAds) within the Westminster system of government. The literature only recently paid considered attention to
Kakabadse, Andrew P. +1 more
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SPAD – reducing timetable related risk [PDF]
WIT Transactions on The Built Environment, 2008 This paper addresses an important railway safety issue – Signals Passed at Danger (SPADs) – and sets out how timetable simulation can be used to give a reliable assessment of how often drivers will see red signals and hence enable railways to manage changes in risk brought about by changes to the timetable.
H.-H. Kohls, R. Watson
openaire +1 more source
ManglarLos campos magnéticos (CMs) afectan los sistemas biológicos, en particular el crecimiento y desarrollo de las plántulas in vitro, que pueden ser utilizados como una alternativa viable en la propagación in vitro de los cultivares de Rubus spp.
Nemesio Santamaría +2 more
doaj +1 more source
Post-Silking Shading Stress Affects Leaf Nitrogen Metabolism of Spring Maize in Southern China
Plants, 2020 Lower sunlight caused by overcast skies from June to July in Southern China is one of the main environmental stresses that frequently occur and affect the post-silking growth and grain development of spring maize.
Jue Wang, Kai Shi, Weiping Lu, Dalei Lu
doaj +1 more source
Acta Universitatis Sapientiae: Agriculture and Environment, 2021 The plastic tunnel can ensure a positive effect on the yield and quality of vegetables. In our experiment, we evaluated the following types and varieties of lettuce – heading type (‘Great Lakes 659’, ‘King of May’), non-heading type (‘Lollo Rossa ...
Madar Ágota Kovácsné +1 more
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Practical fast gate rate InGaAs/InP single-photon avalanche photodiodes
, 2009 We present a practical and easy-to-implement method for high-speed near infrared single-photon detection based on InGaAs/InP single-photon avalanche photodiodes (SPADs), combining aspects of both sine gating and self-differencing techniques.
Barreiro, Claudio +3 more
core +2 more sources
Computational Imaging SPAD Cameras
, 2023 Vision systems built around conventional image sensors have to read, encode and transmit large quantities of pixel information, a majority of which is redundant. As a result, new computational imaging sensor architectures were developed to preprocess the raw pixel data and reduce the amount of information that needs to be read from the sensor. With the
openaire +1 more source
Agroecosistemas, 2020 El manejo químico de Sigatoka negra (Mycosphaerella fijiensis Morelet) ha llevado al uso de fungicidas de modo acción sistémicos y protectantes en emulsiones, o en mezcla con aceite mineral, para disminuir su daño en las hojas.
Abrahan Rodolfo Cervantes Alava +2 more
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