Results 81 to 90 of about 178,143 (300)

Local Unit Invariance, Back-Reacting Tractors and the Cosmological Constant Problem

, 2010
When physics is expressed in a way that is independent of local choices of unit systems, Riemannian geometry is replaced by conformal geometry. Moreover masses become geometric, appearing as Weyl weights of tractors (conformal multiplets of fields ...
A Waldron, Antoniadis I, Bailey T N, Bars I, Bianchi M, Carroll S M, Distler J, Fefferman C, Freedman D Z, Freedman D Z, Girardello L, Gover A R, Gover A R, Henningson M, Higuchi A, J de Boer, Maldacena J M, N Arkani-Hamed, O Corradini, P van Nieuwenhuizen, P van Nieuwenhuizen, Polchinski J, Polyakov A M, Polyakov A M, R Bonezzi, Shaukat A, Thomas T Y, Weinberg S, Weyl H, Witten E, Witten E, Zumino B   +31 more
core   +1 more source

SYN‐A, a naturally derived synergist, restores pyrethroid efficacy against cabbage stem flea beetle but negatively impacts its parasitoid Microctonus brassicae

Pest Management Science, EarlyView.
SYN‐A, a naturally derived synergist, inhibited key metabolic pathways associated with pyrethroid insecticide resistance in cabbage stem flea beetle (CSFB) and its parasitoid Microctonus brassicae. SYN‐A restored pyrethroid efficacy against resistant CSFB allowing up to 80% reduction in application rates.
Patricia A. Ortega‐Ramos, Graham D. Moores, Samantha M. Cook   +2 more
wiley   +1 more source

Analysis of Degradation of Motor Oils Used in Zetor Tractors

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017
The durability of motor oil and then the change interval are influenced by numerous factors and it is not easy to determine optimal mileage for a specific means of transport or a machine.
Marie Sejkorová, Josef Glos
doaj   +1 more source

A Cinderella Story: The Early Evolution of the American Tractor Industry [PDF]

The arrival of motorization, from before the beginning of the twentieth century, has changed agricultural production and the whole economy by dramatically reducing work force and improving productivity.
Soumodip Sarkar, Vanessa Duarte
core  

Successful threshing ring management [PDF]

, 1925
Cover title.Includes bibliographical ...
Bonnen, Clarence Alfred, Rauchenstein, Emil   +1 more
core  

The Impact of Human Error in the Use of Agricultural Tractors: A Case Study Research in Vineyard Cultivation in Italy

Agriculture, 2018
Recently, standards and regulations concerning occupational safety have become more and more rigorous. Nevertheless, the number of accidents and victims has not decreased significantly, as reported by official statistics.
M. Fargnoli, M. Lombardi, Nicolas Haber, Daniele Puri   +3 more
semanticscholar   +1 more source

Efficacy evaluation of pneumatic solid set canopy delivery system to control powdery mildew (Erysiphe necator) in Washington vineyards

Pest Management Science, EarlyView.
The findings of this study indicate that powdery mildew control achieved with the pneumatic solid set canopy delivery system (PSD‐SSCDS) was comparable with that of a conventional airblast sprayer. These results highlight the PSD‐SSCDS as a promising alternative spray technology. Abstract BACKGROUND In this study, a previously optimized pneumatic spray
Dattatray G Bhalekar, Eric Mozzanini, Ramesh K Sahni, Michelle M Moyer, Lav R Khot   +4 more
wiley   +1 more source

Safe Tractor Operations: Road Safety for Tractors and Farm Machinery

EDIS
The Safe Tractor Operations series contains six articles devoted to tractor safety. This publication discusses practical tips to help prevent collisions involving tractors and other farm machinery on public roads.
Serap Gorucu, Carol J. Lehtola, Charles M. Brown   +2 more
doaj   +1 more source

The Division of Labor, Investment, and Capital [PDF]

This paper uses a dynamic general equilibrium model based on corner solutions to formalize the classical theory of investment and capital which considers investment to be a vehicle for developing a high level of division of labor in roundabout productive
Xiaokai Yang
core  

Measure to manage – an integrated pest management metric for horticulture

Pest Management Science, EarlyView.
IPM metric for food horticulture applied to growers in four countries. Overall average score = 58/100. Top fruit growers averaged highest (M = 61). Growers from England scored highest overall & indicated strong adoption of core components Policy is an influencing factor, evidenced by adoption rates in England Policy must function at farm level to ...
Jennifer Byrne, Robert Lillywhite, Fiona Thorne, Lael Walsh, Henry Creissen   +4 more
wiley   +1 more source