Results 31 to 40 of about 46,487 (202)

Determination of Leaf Nitrogen Concentrations Using Electrical Impedance Spectroscopy in Multiple Crops

open access: yesRemote Sensing, 2020
In this work, crop leaf nitrogen concentration (LNC) is predicted by leaf impedance measurements made by electrical impedance spectroscopy (EIS). This method uses portable equipment and is noninvasive, as are other available nondestructive methods, such ...
Rinku Basak, Khan Wahid, Anh Dinh
doaj   +1 more source

Assimilation capacity by non-destructive in situ measurements in longterm experiment of maize (Zea mays L.) under different plant density and nitrigen supply in Chernozem [PDF]

open access: yesActa Fytotechnica et Zootechnica, 2020
We conducted a long term experiment (set up in 1983) to examine the effects of fertilization and plant density on SPAD and LAI values as well as yield in 2017 and 2018, in two maize hybrids (Sushi, Fornad) in chernozem soil.
Péter Pepó
doaj   +1 more source

Low Noise and High Photodetection Probability SPAD in 180 nm Standard CMOS Technology [PDF]

open access: yes, 2017
A square shaped, low noise and high photo-response single photon avalanche diode suitable for circuit integration, implemented in a standard CMOS 180 nm high voltage technology, is presented.
Accarino, Claudio   +6 more
core   +1 more source

An Experimentally-Validated Verilog-A SPAD Model Extracted from TCAD Simulation [PDF]

open access: yes, 2018
Single-photon avalanche diodes (SPAD) are photodetectors with exceptional characteristics. This paper proposes a new approach to model them in Verilog-A HDL with the help of a powerful tool: TCAD simulation. Besides, to the best of our knowledge, this is
Carmona Galán, Ricardo   +3 more
core   +1 more source

Characterization-Based Modeling of Retriggering and Afterpulsing for Passively Quenched CMOS SPADs [PDF]

open access: yes, 2019
The current trend in the design of systems based on CMOS SPADs is to adopt smaller technological nodes, allowing the co-integration of additional electronics for the implementation of complex digital systems on chip.
Guerra Vinuesa, Oscar   +5 more
core   +1 more source

Effects of the changes in soil conditions due to land rolling on the growth of barley (Hordeum vulgare L.)

open access: yesAgriculture, 2022
This study aimed to determine the changes in soil properties due to land rolling after sowing and analysis the effects of these changes in soil properties on the plant growth in barley (Hordeum vulgare L.) production. For this purpose, a field experiment
Gürsoy Songül
doaj   +1 more source

CMOS SPADs selection, modeling and characterization towards image sensors implementation [PDF]

open access: yes, 2012
The selection, modeling and characterization of Single Photon Avalanche Diodes (SPADs) are presented. Working with the standard 180nm UMC CMOS process, different SPAD structures are proposed in combination with several quenching circuits in order to ...
Guerra Vinuesa, Oscar   +4 more
core   +1 more source

Low-Noise and High-Efficiency Near-IR SPADs in 110nm CIS Technology [PDF]

open access: yes, 2019
Photon detection at longer wavelengths is much desired for LiDAR applications. Silicon photodiodes with deeper junctions and larger multiplication regions are in principle more sensitive to near-IR photons.
Carmona Galán, Ricardo   +2 more
core   +1 more source

A Scaling Law for SPAD Pixel Miniaturization [PDF]

open access: yesSensors, 2021
The growing demands on compact and high-definition single-photon avalanche diode (SPAD) arrays have motivated researchers to explore pixel miniaturization techniques to achieve sub-10 μm pixels. The scaling of the SPAD pixel size has an impact on key performance metrics, and it is, thereby, critical to conduct a systematic analysis of the underlying ...
Morimoto, Kazuhiro, Charbon, Edoardo
openaire   +3 more sources

Effect of Greenhouse CO2 Supplementation on Yield and Mineral Element Concentrations of Leafy Greens Grown Using Nutrient Film Technique

open access: yesAgronomy, 2020
Carbon dioxide (CO2) concentration is reported to be the most important climate variable in greenhouse production with its effect on plant photosynthetic assimilation.
Hardeep Singh   +4 more
doaj   +1 more source

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