Results 211 to 220 of about 62,725 (312)

Radiation‐induced peroxide rupture and its temperature‐dependent repair probed by homogeneous X‐ray irradiation

open access: yesActa Crystallographica Section D, Volume 82, Issue 5, Page 492-503, May 2026.
This manuscript investigates the X‐ray‐induced radiolysis of the catalytic C5‐peroxide adduct in urate oxidase crystals, utilizing a top‐hat X‐ray beam to monitor peroxide occupancy across extensive dose series at both 100 K and room temperature. The study reveals a kinetic phase transition where the peroxide decays rapidly via zero‐order kinetics at ...
Symeon Koulas   +4 more
wiley   +1 more source

Spatial price competition and buyer power in the U.S. beef packing industry

open access: yesAmerican Journal of Agricultural Economics, Volume 108, Issue 3, Page 771-798, May 2026.
Abstract We develop a spatially‐explicit model of the U.S. beef packing industry to study key questions related to competition in an oligopsony setting. Cattle supplies are modeled at the county level, and packing plants' location, capacity, and ownership are taken as given. Packers procure negotiated cattle by competing in prices in each local (county)
GianCarlo Moschini, T. Jake Smith
wiley   +1 more source

Determination of polyethylene glycol 6000 (PEG) concentration in sheep faeces using near infrared spectroscopy

open access: yes, 2005
To assess dry matter intake (DMI) in grazing ruminants, techniques have been developed with chromium or ytterbium oxide as inert markers. These markers allow to estimate total faecal output quite accurately, but their analysis is costly and laborious so number of assays is generally limited.
Hassoun, Philippe   +2 more
openaire   +2 more sources

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