Results 91 to 100 of about 267,291 (302)

Long time Evolution of Quantum Averages Near Stationary Points

open access: yes, 2003
We construct explicit expressions for quantum averages in coherent states for a Hamiltonian of degree 4 with a hyperbolic stagnation point. These expressions are valid for all times and "collapse" (i.e., become infinite) along a discrete sequence of ...
Berezin   +12 more
core   +1 more source

Ultrasound‐Responsive Engineered Bacteria for Targeted Cancer Therapy: Strategies, Mechanisms, and Applications

open access: yesAdvanced Science, EarlyView.
This review elucidates URB design strategies, including genetic and physicochemical modifications, while dissecting the synergistic mechanisms governing spatiotemporal control. It further evaluates applications in targeted drug delivery, gene modulation, and immunotherapy, finally offering perspectives on overcoming translational barriers for clinical ...
Xueyao Wang   +5 more
wiley   +1 more source

Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley   +1 more source

Livestock Tango: U.S. and Latin America Dance Together, but Who Will Lead?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the competitiveness between Latin American and U.S. livestock and meat sectors. We employ a computable general equilibrium modeling framework to evaluate two scenarios: coordinated improvements in Latin American productivity, transport efficiency, and market access (Scenario I), and the minimum productivity gains required ...
Taís C. Menezes   +2 more
wiley   +1 more source

Stagnation-point flow and heat transfer over a stretching/ shrinking cylinder in nanofluids [PDF]

open access: yes, 2016
A mathematical model is analyzed to study the effects of stretching/shrinking cylinder on a steady stagnation point flow and heat transfer characteristics in nanofluid.
Bachok @ Lati, Norfifah   +2 more
core  

Adapting to Changing Rainfall and Developing Off‐Farm Employment: Implications for the Adoption of Direct Seeding in Rice Production

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Rice is the main staple food for more than half of the world's population and the income from rice is an essential source for livelihoods of millions of households. We examine whether direct seed in rice production is an adaptation of rice farmers to rainfall changes and farm labor scarcity.
Manh Hung Do
wiley   +1 more source

Unsteady stagnation-point heat transfer during passage of a concentrated vortex [PDF]

open access: yes
The unsteady boundary layer due to a single rectilinear vortex filament approaching a 2-D stagnation point is investigated. Assuming the vortex remains far from the surface, incompressible potential flow theory is used to determine the time dependent ...
Rae, William J., Rigby, David L.
core   +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

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