Results 121 to 130 of about 7,749,107 (294)

Vertical Price Transmission in Food Markets: New Evidence From Meta‐Analysis

open access: yesAgribusiness, EarlyView.
ABSTRACT A growing body of empirical research has examined price dynamics along the food supply chain, yet findings remain heterogeneous and often conflicting. This study conducts a meta‐analysis of 140 studies, totaling 652 observations, to examine (1) the reported presence of asymmetric price transmission and (2) the reported direction of price ...
Sushan K C   +2 more
wiley   +1 more source

Demonstration; Drawbar Test; Waterloo Boy

open access: yes, 1956
Demonstration at the Tractor Test Lab. This Waterloo Boy's manufacturer was bought later by John Deere. "Waterloo Boy by John Deere on kerosene was the first tractor tested at the University of Nebraska in 1920." The Waterloo Boy tractor is shown on the ...
Nebraska Tractor Test Laboratory
core  

Do More Open Economies Export Less Diversely in Brazilian Agribusiness?

open access: yesAgribusiness, EarlyView.
ABSTRACT This paper asks whether municipalities with a larger export‐to‐revenue ratio display a more concentrated bundle of exported goods in Brazilian agribusiness. Recent advances in export imputation for Brazilian municipalities allow for an analysis of the concentration profile of each municipality and its association with export openness.
Alan Leal, Michelle Marcia Viana Martins
wiley   +1 more source

Weather Attention in Online Discourse and Price Uncertainty in Agricultural Futures Markets

open access: yesAgribusiness, EarlyView.
ABSTRACT Weather is a central determinant of production risk in agricultural markets, but markets respond not only to weather conditions themselves, but also to how those conditions are noticed, framed, and interpreted in public discourse. In this setting, real‐time online weather discussions may shape price uncertainty by influencing how market ...
Mario A. Ortez   +3 more
wiley   +1 more source

Tractor Testing; PTO Test; Jeep

open access: yes, 1949
"Willys Jeep being tested at Nebraska Tractor Test Laboratory." Willys-Overland Motors Jeep CJ-3A Universal is shown inside the tractor test lab. After WWII, with many jeeps being surplus and a lack of tractors, the Jeep as well as the Dodge Power wagon ...
Nebraska Tractor Test Laboratory
core  

Economic Impact of Sustainability in Wine Sector: A Systematic Literature Review

open access: yesAgribusiness, EarlyView.
ABSTRACT Sustainability has become a key issue in the wine sector, raising questions about its compatibility with firms' economic performance. Despite growing attention to environmental and social practices, evidence on their economic implications remains fragmented.
Valentina Di Chiara   +2 more
wiley   +1 more source

Performance of Brazilian children and adolescents in flexibility tests: a systematic review update of published studies from 2020 to 2024

open access: yesRevista Brasileira de Cineantropometria e Desempenho Humano
This systematic review aimed to identify and synthesize recent scientific evidence on flexibility levels in Brazilian children and adolescents. A systematic search was conducted between August and October 2025 in five databases (MEDLINE/PubMed, Scopus ...
Caio César da Silva Moura Santos   +6 more
doaj   +1 more source

Results of Patch Testing With a Brazilian Propolis Dilution Series

open access: yesContact Dermatitis
ABSTRACT Background Patch testing with Brazilian propolis 10% pet. has yielded very high rates of positive reactions (> 20%). For most, no clinical relevance could be found. False‐positive reactions from irritancy of the test material were suggested as a possible explanation.
Emma M. van Oers   +3 more
openaire   +2 more sources

Tractor Testing; Drawbar; Test Car

open access: yes, 1920
"View of tractor and dynamometer car in 1920. Fred Laub driving. Lew Wallace in test car." The tractor is not identifiable. This load/test car was a second edition of the first open test car, which was called the bath-tub by the ...
Nebraska Tractor Test Laboratory
core  

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