Articles with "variable rate" as a keyword



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Performance Evaluation of Constant Versus Variable Rate Irrigation

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Published in 2017 at "Irrigation and Drainage"

DOI: 10.1002/ird.2131

Abstract: Variable rate irrigation (VRI) can increase water use efficiency and productivity by applying water based on site-specific needs. In this study, the performance of a five-span centre-pivot irrigation system (CPIS) retrofitted with a commercial variable-rate… read more here.

Keywords: rate irrigation; irrigation; water; application ... See more keywords
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Using variable‐rate selective excitation (VERSE) radiofrequency pulses to reduce power deposition in pulsed arterial spin labeling sequence at 7 Tesla

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Published in 2019 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.27944

Abstract: Arterial spin labeling (ASL) is an established noninvasive MRI technique used for cerebral blood flow measurement, which generally suffers from a low signal‐to‐noise ratio (SNR). The use of ultra‐high fields to enhance sensitivity inevitably results… read more here.

Keywords: arterial spin; spin labeling; rate; selective excitation ... See more keywords
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Canopy sensor placement for variable-rate nitrogen application in sugarcane fields

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Published in 2017 at "Precision Agriculture"

DOI: 10.1007/s11119-017-9505-x

Abstract: Nitrogen (N) fertilization is challenging for sugarcane, and machine-based canopy sensors appear as an alternative to allow variable-rate N fertilization. Top or sidedressing N is applied in each crop row and crop spatial variability behavior… read more here.

Keywords: sugarcane; application; sensor placement; rate ... See more keywords
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Methodology for a Variable Rate Control Strategy Development in Continuous Manufacturing Applied to Twin-screw Wet-Granulation and Continuous Fluid-bed Drying

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Published in 2018 at "Journal of Pharmaceutical Innovation"

DOI: 10.1007/s12247-018-9320-6

Abstract: AbstractPurposeContinuous manufacturing (CM) promises unrestricted scale up of production volume through runtime, together with lower product quality variability through stricter process control. However, unforeseen incidents that disrupt the process’ steady state or even force temporary… read more here.

Keywords: methodology; control; process; variable rate ... See more keywords
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Benefits of Increasing Information Accuracy in Variable Rate Technologies

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Published in 2021 at "Ecological Economics"

DOI: 10.1016/j.ecolecon.2021.107047

Abstract: Abstract Improvements in the sustainability of agricultural production depend essentially on advances in the efficient use of nitrogen. Precision farming promises solutions in this respect. Variable rate technologies allow the right quantities of fertilizer to… read more here.

Keywords: information accuracy; increasing information; benefits increasing; variable rate ... See more keywords
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Variable-Rate VLSI Architecture for 400-Gb/s Hard-Decision Product Decoder

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Published in 2021 at "IEEE Transactions on Circuits and Systems I: Regular Papers"

DOI: 10.1109/tcsi.2020.3035419

Abstract: Variable-rate transceivers, which adapt to the conditions, will be central to energy-efficient communication. However, fiber-optic communication systems with high bit-rate requirements make design of flexible transceivers challenging, since additional circuits needed to orchestrate the flexibility… read more here.

Keywords: vlsi architecture; variable rate; rate; hard decision ... See more keywords
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Using video reflexive ethnography to explore the use of variable rate intravenous insulin infusions

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Published in 2022 at "BMC Health Services Research"

DOI: 10.1186/s12913-022-07883-w

Abstract: Background The use of variable rate intravenous insulin infusion (VRIII) is a complex process that has consistently been implicated in reports of error and consequent harm. Investment in patient safety has focused mainly on learning… read more here.

Keywords: methodology; variable rate; use variable; insulin ... See more keywords
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Potential Water Conservation Using Site-Specific Variable Rate Irrigation

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Published in 2019 at "Applied Engineering in Agriculture"

DOI: 10.13031/aea.13108

Abstract: Abstract. Site-specific variable-rate irrigation (VRI) systems can be used to spatially manage irrigation within sub-field-sized zones and optimize spatial water use efficiency. The goal of the research is to provide farmers and consultants a tool… read more here.

Keywords: rate irrigation; management zones; irrigation; water ... See more keywords
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A Study on the Time Lag and Compensation of a Variable-Rate Fertilizer Applicator

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Published in 2021 at "Applied Engineering in Agriculture"

DOI: 10.13031/aea.13855

Abstract: HighlightsA lag time detection system for variable-rate fertilization was developed.The lag time of a variable-rate fertilizer applicator was obtained and analyzed.A sigmoid equation was fitted to the data of rate change transition tests.The planar coordinates-based… read more here.

Keywords: time; variable rate; lag time; rate ... See more keywords
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Investigation of an Experimental Laser Sensor-Guided Spray Control System for Greenhouse Variable-Rate Applications

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Published in 2019 at "Transactions of the ASABE"

DOI: 10.13031/trans.13366

Abstract: Abstract. Precision variable-rate spraying technology is needed for controlled-environment plant production in greenhouses. An experimental spray system for greenhouse applications was developed for real-time control of individual nozzle outputs. The system mainly consisted of a… read more here.

Keywords: spray control; variable rate; system; spray ... See more keywords
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Hardware and Software Design for Premixing In-Line Injection System Attached to Variable-Rate Orchard Sprayer

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Published in 2020 at "Transactions of the ASABE"

DOI: 10.13031/trans.13730

Abstract: HighlightsA premixing in-line injection system was designed as a retrofit attachment to a laser-guided variable-rate orchard sprayer.A graphical user interface with touchscreen functions was incorporated into the system to facilitate field applications.Preliminary tests demonstrated that… read more here.

Keywords: system; line; premixing line; injection ... See more keywords