نتایج جستجو برای: three mowing heights including 2

تعداد نتایج: 4125365  

Journal: :Physical review letters 2008
Justin Elser Viktor A Podolskiy

We develop an approach to utilize anisotropic metamaterials to solve one of the fundamental problems of modern plasmonics--parasitic scattering of surface waves into free-space modes, opening the road to truly two-dimensional plasmonic optics. We illustrate the developed formalism on the examples of plasmonic refractor and plasmonic crystal, and discuss limitations of the developed technique an...

2018
Verena Busch Valentin H Klaus Caterina Penone Deborah Schäfer Steffen Boch Daniel Prati Jörg Müller Stephanie A Socher Ülo Niinemets Josep Peñuelas Norbert Hölzel Markus Fischer Till Kleinebecker

Plant functional traits reflect individual and community ecological strategies. They allow the detection of directional changes in community dynamics and ecosystemic processes, being an additional tool to assess biodiversity than species richness. Analysis of functional patterns in plant communities provides mechanistic insight into biodiversity alterations due to anthropogenic activity. Althou...

Journal: :Annals of botany 2012
Jean-Paul Maalouf Yoann Le Bagousse-Pinguet Lilian Marchand Blaise Touzard Richard Michalet

BACKGROUND AND AIMS There is still debate regarding the direction and strength of plant interactions under intermediate to high levels of stress. Furthermore, little is known on how disturbance may interact with physical stress in unproductive environments, although recent theory and models have shown that this interplay may induce a collapse of plant interactions and diversity. The few studies...

2014
R. M. Harvey

Green leaf volatiles (GLVs) are a class of woundinduced volatile organic compounds emitted by several plant species. Turf grasses emit a complex profile of GLVs upon mowing, as evidenced by the “freshly cut grass” smell, some of which are readily oxidized in the atmosphere to contribute to secondary organic aerosol (SOA). The contribution of lawn-mowing-induced SOA production may be especially ...

2013

by PATRICK M. O'BRIEN Director, Sou theas te rn Region, U S G A Green Sect ion MOST GOLF COURSES like to offer their golfers an artistic contrast between the fairways and roughs, a feature that enhances the natural beauty of each hole. This is true especially if the fairway perimeters are curbed rather than set in a straight line. This feature is termed contour mowing, and it is usually conside...

Journal: :Math. Comput. 2007
Arthur Baragar Ronald van Luijk

In this paper we construct the first known explicit family of K3 surfaces defined over the rationals that are proved to have geometric Picard number 3. This family is dense in one of the components of the moduli space of all polarized K3 surfaces with Picard number at least 3. We also use an example from this family to fill a gap in an earlier paper by the first author. In that paper, an argume...

2016
Ehsan Gholamalizadeh

This paper presents an optimization of a solar chimney power plant with an inclined collector roof using genetic algorithms. Five design parameters that affect the system performance are the collector radius, collector inlet height, collector outlet height, chimney height and diameter. A multi-objective design to simultaneously optimize three conflicting objectives including system efficiency, ...

Journal: :Weed Science 2021

Abstract The current study aimed to screen glyphosate-alternative weed control methods in three perennial crops Greece. Field trials were conducted and repeated (2018 2019 2020) a citrus orchard ( Citrus clementina Hort. ex Tan), an olive grove Olea europaea L.), vineyard Vitis vinifera L.) under the randomized complete block design (nine treatments, four blocks). Glyphosate was applied (720 g ...

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