Results 111 to 120 of about 138,771 (325)

Parameters of Compton x-ray beams: Total yield and pulse duration

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2005
Closed analytical formulas describing the parameters of x rays, generated in Compton backscattering of laser pulse and electron beam, such as total yield and temporal duration of the x-ray pulse are presented.
Eugene Bulyak, Vladislav Skomorokhov
doaj   +1 more source

Crop yield increase with precision technologies: A review [PDF]

open access: yesRatarstvo i Povrtarstvo
It is obvious that the end product of any crop production activity embarked upon by any farmer/agronomist is yield. This review paper is aimed at diagnosing various ways or approaches through which crop yield could be increased to meet the need of the ...
Okoro Orji Kalu, Oluebube Jecinta Okorie
doaj   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner   +22 more
wiley   +1 more source

Modeling the impact of sweetpotato weevils on storage root yield

open access: yesOpen Agriculture, 2018
This study estimated the amount of loss in storage roots caused by various levels of damage caused by sweetpotato weevils (Cylas spp). Seven varieties of sweetpotato (Ipomoea batatas L.
Akansake Daniel A.   +2 more
doaj   +1 more source

Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil

open access: yesPesquisa Agropecuária Brasileira, 2012
The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic ...
Fabio Ricardo Marin   +1 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

High-Energy Tests of Lorentz Invariance

open access: yes, 1999
We develop a perturbative framework with which to discuss departures from exact Lorentz invariance and explore their potentially observable ramifications.
A. Halprin   +39 more
core   +1 more source

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