Results 141 to 150 of about 2,141 (293)

Causal analysis of trade loss from pathogens: A global study of foot and mouth disease impacts on meat exports

American Journal of Agricultural Economics, EarlyView.
Abstract Our general interest is in global trade loss from livestock pathogens, specifically exports. We adopt a causal inference approach that considers animal disease outbreaks over time as non‐staggered binary treatments with the potential for switching in (infection) and out of treatment (recovery) within the sample period. The outcome evolution of
Mohammad Maksudur Rahman, Thomas L. Marsh   +1 more
wiley   +1 more source

Concept for Sustained Plant Production on ISS Using VEGGIE Capillary Mat Rooting System

, 2011
Plant growth in microgravity presents unique challenges associated with maintaining appropriate conditions for seed germination, seedling establishment, maturation and harvest. They include maintaining appropriate soil moisture content, nutrient balance,
Newsham, Gerard, Stutte, Gary W., Morrow, Robert M., Wheeler, Raymond M.   +3 more
core   +1 more source

Predictors of carotenoid status in New Zealand children using carotenoid reflection score: a cross-sectional study. [PDF]

Asia Pac J Clin Nutr
Rapson J, Rush E, McLean R, Fuavao K, Wall C, Eyles H.   +5 more
europepmc   +1 more source

Seeds of change: The impact of Ethiopia's direct seed marketing approach on smallholders' seed purchases and productivity

American Journal of Agricultural Economics, EarlyView.
Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen, Gashaw T. Abate, Seid Yimam, Rui Benfica, David J. Spielman, Frank Place   +5 more
wiley   +1 more source

Identification of Fungal Colonies on Ground Control and Flight Veggie Plant Pillows

, 2017
The Veggie system focuses on growing fresh produce that can be harvested and consumed by astronauts. The microbial colonies in each Veggie experiment are evaluated to determine the safety level of the produce and then differences between flight and ...
Massa, Gioia D., Scotten, Jessica E., Spencer, Lashelle E., Khodadad, Christina L., Hummerick, Mary E.   +4 more
core   +1 more source

Inverse Vulcanization Through Epoxide Chemistry: A Low Temperature Non‐Olefin Route to Sulfur‐Rich Polymer Networks

Angewandte Chemie, EarlyView.
Epoxide monomers undergo base‐catalyzed ring‐opening copolymerization with elemental sulfur to afford sulfur‐rich polymers under mild conditions. The resulting materials exhibit excellent mechanical performance, strong adhesion (up to 10 MPa on stainless steel), and outstanding reprocessability.
Pan Yang, Youfu Wang, Xinyuan Zhu, Jinhong Jia, Xiaofeng Wu, Tom Hasell   +5 more
wiley   +2 more sources

Food inflation pass‐through from agricultural imports in a small open economy

American Journal of Agricultural Economics, EarlyView.
Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
wiley   +1 more source

Bringing WISE Home: Feasibility and Effectiveness of a Preschool Nutrition Curriculum in Rural Home Visits. [PDF]

J Nutr Educ Behav
Massey-Swindle T, McKelvey L, Waller E, Waymire M, Hamilton A, Zhang D.   +5 more
europepmc   +1 more source

Lost in aggregation? On the importance of local food price data for food poverty estimates

American Journal of Agricultural Economics, EarlyView.
Abstract This paper explores within‐country variations in food price dynamics and food poverty estimates by employing local market price data and national consumer price index (CPI) data. Our results show that national CPI data may be useful for approximating national trends but they fail to detect and identify spatial variations in local trends, which
Stephan Dietrich, Valerio Giuffrida, Bruno Martorano, Georg Schmerzeck, Marco Tiberti   +4 more
wiley   +1 more source

Operational Evaluation of VEGGIE Food Production System in the Habitat Demonstration Unit

, 2011
The 2010 Desert Research and Technology Studies (DRATS) of the VEGGIE Food Production System in the Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) was the first operational evaluation of salad crop production technology in a NASA ...
Newsham, Gerard, Stutte, Gary W., Morrow, Robert M., Wheeler, Raymond M.   +3 more
core   +1 more source