Results 111 to 120 of about 365,066 (339)

Stagnation pressure probe [PDF]

open access: yes, 1974
A method and apparatus for measuring the stagnation pressure of supersonic velocity gas streams without the generation of shock waves which interfere with such measurements are given. The technique is insensitive to the type of gas and Mach number and is
Goodyer, M. J.
core   +1 more source

Sulfonated Diels–Alder Poly(Phenylene)s in Membrane Electrode Assemblies for Fuel Cells

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
This study reveals that ionomer adsorption is the key performance‐limiting factor for sulfonated Diels–Alder poly(phenylene)s in fuel cell cathodes, with interfacial incompatibility and hydrophilicity also contributing. High performance is retained in membranes and anodes, but significant losses occur when used as cathode binders.
Heemin Park   +6 more
wiley   +1 more source

Does Contract Farming Improve Diet Quality? The Case of Senegalese Smallholders

open access: yesAgribusiness, EarlyView.
ABSTRACT The institution of contract farming has gained prominence in most developing countries owing to its numerous benefits. While several studies have already highlighted the welfare benefits of contract farming, very few have investigated the effects on diet quality, despite poor quality diets being a serious challenge in most parts of the ...
Francis E. Ndip, Takeshi Sakurai
wiley   +1 more source

The Bitter Taste of Brazil's Temporary Import Ban on Robusta Coffee

open access: yesAgribusiness, EarlyView.
ABSTRACT Brazil, a leading Robusta coffee producer and exporter, faced a significant drought in 2016–2017, which drastically reduced production and depleted stocks. Consequently, Brazil temporarily permitted the import of one million 60‐kg bags of Robusta coffee in the spring 2017. An import ban was imposed shortly afterward due to lobbying by domestic
Hanifi Otgun   +2 more
wiley   +1 more source

Indian Manufacturing Productivity: What Caused the Growth Stagnation before the 1990s? [PDF]

open access: yesInternational Productivity Monitor, 2010
This article addresses the question of why productivity growth in Indian manufacturing was slow in the pre-reform period and analyzes how economic reforms in the 1990s accelerated productivity growth.
Abhay Gupta
doaj  

Impact of Sustainable Agricultural Practices on Labor Use Among Rice Farmers in the Mekong Delta of Vietnam

open access: yesAgribusiness, EarlyView.
ABSTRACT The Mekong Delta (MKD), Vietnam has achieved high rice productivity through rapid intensification. However, this progress has led to environmental degradation and adverse economic and health effects. To mitigate these challenges, sustainable agricultural practices (SAPs) have been promoted.
Nguyen Thi Thu Hien   +5 more
wiley   +1 more source

Approximate Method of Calculating Heating Rates at General Three-Dimensional Stagnation Points During Atmospheric Entry [PDF]

open access: yes
An approximate method for calculating heating rates at general three dimensional stagnation points is presented. The application of the method for making stagnation point heating calculations during atmospheric entry is described.
Hamilton, H. H., II
core   +1 more source

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