Results 51 to 60 of about 407,758 (302)

Juga H. Adams & A. Adams 1854

open access: yes, 2022
Genus Juga H. Adams & A. Adams, 1854 Vibex (Juga) H. & A. Adams, 1854. Type species: Melania silicula A. Gould, 1847, by subsequent designation (Baker 1963: 35). Juga (Calibasis) D.W. Taylor, 1966. Type species: Melania (? Goniobasis) acutifilosa Stearns, 1890, by original designation. Syn. nov. Juga (Oreobasis) D.W. Taylor, 1966. Type species: Melania
Strong, Ellen E.   +3 more
openaire   +2 more sources

Bias‐Engineered Synthetic Antiferromagnets Hosting Sub‐20 nm Zero‐Field Skyrmions at Room Temperature

open access: yesAdvanced Science, EarlyView.
A fully compensated synthetic antiferromagnet (SAF) multilayer exhibits a uniform state at zero field, without skyrmions. We use a SAF bias system to provide RKKY‐mediated exchange bias to the SAF multilayer, promoting zero‐field skyrmion stabilization and polarity control.
Emily Darwin   +5 more
wiley   +1 more source

Adams' Cobar Equivalence [PDF]

open access: yesTransactions of the American Mathematical Society, 1992
Let F F be the homotopy fibre of a continuous map
Felix, Yves   +2 more
openaire   +1 more source

The Cost of a Nutritious Diet in Cafeterias: Evidence From US Military Dining Facilities

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Providing nutritious meals in institutional settings with financial constraints, such as military dining facilities, is challenging. The US Department of War (DoW) and US Department of Agriculture (USDA) collaborated to modernize the Basic Daily Food Allowance (BDFA) using an optimization model that incorporates service members' consumption ...
Linlin Fan   +8 more
wiley   +1 more source

A Skills Gap Analysis of Farmer Directors of US Farmer Cooperatives

open access: yesAgribusiness, EarlyView.
ABSTRACT Boards of directors are vital to firm performance and are an integral part of the decision‐making process of any business. Several studies have been conducted that observe corporate or nonprofit board characteristics, skills, and the board's connection to firm performance.
Jody S. Herchenbach   +5 more
wiley   +1 more source

Examining the Impact of Row Planting on Labor Use for Sustainable Food Production Among Maize Farmers in Rural Ghana

open access: yesAgribusiness, EarlyView.
ABSTRACT Smallholder farmers are reverting to traditional production methods due to the high opportunity costs and unintended consequences of new technologies. This study focuses on row planting technology, which is labor‐intensive and slow without mechanized operations.
Emmanuel Tetteh Jumpah   +4 more
wiley   +1 more source

Lithophaginae H. Adams & A. Adams 1857

open access: yes, 2022
Subfamily Lithophaginae H.Adams &A.Adams, 1857in 1853-1858[= Lithodominae Gray,1857; Botulinae Scarlato & Starobogatov,1979a].
Delfino, Marina Inés   +1 more
openaire   +2 more sources

Is Precision Agriculture Technology Adoption Persistently Overestimated?

open access: yesAgribusiness, EarlyView.
ABSTRACT Precision agriculture is sometimes assumed to diffuse steadily over time, and industry planning frequently extrapolates early adoption trends forward. This study evaluates the accuracy of such expectations by comparing agricultural input dealers' forecasts of future service offerings with the actual levels of offerings that dealerships ...
Trey Malone   +5 more
wiley   +1 more source

Calculated Estimation of Fatigue Life of Bearing Structures of a Mining Dump Truck Based on Complex Computer Modeling of Loading and Damage Accumulation Processes

open access: yesМеханика машин, механизмов и материалов, 2020
Methodological recommendations are presented for evaluating the fatigue life of machine load-bearing elements under the action of random processes of operational loading based on the integrated application of computer modeling technologies.
Aliaksei V. Shmialiou   +4 more
doaj  

Pharidae H. Adams & A. Adams 1856

open access: yes, 2021
Published as part of Giacomino, Sebastián & Signorelli, Javier H., 2021, Systematic redescription of Solen (Ensisolen) tehuelchus and Ensis macha (Bivalvia: Solenoidea) from Argentina, southwestern Atlantic Ocean, pp.
Giacomino, Sebastián   +1 more
openaire   +2 more sources

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