Results 81 to 90 of about 7,345,529 (346)

The hydraulic efficiency–safety trade‐off differs between lianas and trees

open access: yesEcology, 2019
Hydraulic traits are important for woody plant functioning and distribution. Associations among hydraulic traits, other leaf and stem traits, and species’ performance are relatively well understood for trees, but remain poorly studied for lianas.
Masha T. van der Sande   +4 more
semanticscholar   +1 more source

Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object

open access: yesAdvanced Engineering Materials, EarlyView.
We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof   +9 more
wiley   +1 more source

AGRO-FOOD TRADE POSITION IN ROMANIA’S FOREIGN TRADE [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2013
The purpose of the paper was the analysis of the agro-food foreign trade position in Romania’s foreign trade in the period 2005-2010. Agro-food foreign trade registered a fast dynamics, its volume accounting for Euro Million 7,053 in 2010, being by 161 %
Agatha POPESCU
doaj  

ANALYSIS OF TRADE EFFICIENCY IN SERBIA BASED ON THE PROMETHEE METHOD

open access: yesBusiness Excellence and Management, 2021
Various methods of multi-criteria optimization have been developed and have recently been widely applied in trade. With this in mind, this paper investigates the efficiency of trade in Serbia based on the Promethee method.
Lukic Radojko
doaj   +1 more source

The Impact of Trade Openness on Technical Efficiency in U.S. Agriculture [PDF]

open access: yes
This study addresses the impact of trade openness on technical efficiency in the U.S. agricultural sector. The results indicate that trade protectionism illustrated with a decrease in the share of agricultural imports in agricultural GDP led to an ...
Miljkovic, Dragan, Shaik, Saleem
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Patterns and efficiency of fossil energy trade between China and countries along the Belt and Road [PDF]

open access: yesZiyuan Kexue
[Objective] The Belt and Road Initiative is the core of China’s foreign policy and future opening-up and international cooperation. It is of great significance to analyze the pattern and efficiency of fossil energy trade between China and countries along
ZHANG Pengyan, CHANG Yinghui, LIU Yu, ZHANG Jinbing, LIU Zhenyue
doaj   +1 more source

Trade, Capital Redistribution and Firm Structure [PDF]

open access: yes
A model of heterogeneous firms with multiple products and two production factors (labor and capital) is used to study how trade liberalization affects firms’choices through both product and factor markets.
Qiu, Larry D, Wen Zhou, Wen
core  

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

open access: yesAdvanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens   +14 more
wiley   +1 more source

Inefficient but Effective? A field experiment on the effectiveness of direct and indirect transfer mechanisms [PDF]

open access: yes
We conduct a field experiment on direct and indirect transfer mechanisms. It shows that people are willing to donate significantly more if the donation is indirect, i.e., it is tied to the purchase of a good with a price premium, rather than made ...
Günther G. Schulze, Hannes Koppel
core  

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