Results 101 to 110 of about 85,333 (305)

Tendência histórica de preços pagos ao produtor na agricultura de grãos do Rio Grande do Sul, Brasil Price tendency received by grain agricultural farmers in Rio Grande do Sul, Brazil

Ciência Rural, 2007
O presente trabalho analisa a evolução histórica dos preços pagos ao produtor pelos principais produtos da agricultura do Rio Grande do Sul nas últimas três décadas, dando especial atenção às tendências ocorridas a partir da década de 90 e ...
Renato Santos de Souza, João Garibaldi Almeida Viana   +1 more
doaj   +1 more source

Asia's Role in Stabilizing Food and Agricultural Prices [PDF]

Every decade or so, food becomes newsworthy globally because of a price spike, either upwards (hurting consumers, as in 1973 and 2008) or downwards (hurting farmers in open economies, as in 1986).
Kym Anderson
core  

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

On the relevance of world agricultural prices [PDF]

This report is part of an attempt to model the global markets for primary commodities and to use these models for forecasting purposes as well as for policy analysis.
Mundlak, Yair, Larson, Donald F.
core  

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

Advanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu, Richard Murray, Cara‐Lena Nies, Cathal Larrigy, Martina Piletti, Jahidul Islam, Daniela Iacopino, Eileen Hurley, Michael Nolan, Aidan J. Quinn   +9 more
wiley   +1 more source

Asymmetric Effects of Agricultural Input Prices on Farmgate Prices in Türkiye

Agriculture
The asymmetric effects of global and national factors on agricultural production negatively affect the sustainability of agriculture in Turkey. This study seeks to explore those impacts on wheat prices by focusing on key input prices such as diesel ...
Gökhan Uzel, Mustafa Kuzu, Ahlem Güler, Serkan Gürlük   +3 more
doaj   +1 more source

Infrastructure, market access, and agricultural prices [PDF]

The effect of recent agricultural market reforms in many developing countries is often measured through tests for market integration by analyzing co-variation of food prices.
Minten, Bart
core  

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Relações de trocas e causalidade de Granger entre preços pagos e recebidos pela agricultura brasileira, 1986/2004

Revista de Economia e Sociologia Rural, 2005
O artigo examina as relações de trocas e a causalidade de Granger entre preços pagos e recebidos pela agropecuária brasileira, entre 1986 e 2004. Neste período, houve valorização das relações de trocas para o conjunto da agropecuária.
Nali de Jesus de Souza, Valter José Stülp   +1 more
doaj   +1 more source

Agricultural Policy: High Commodity and Input Prices [PDF]

Because of high commodity prices, beginning in 2006, subsidies to farmers in the United States, the European Union, and Canada have been reduced significantly.
Schmitz, Andrew, Schmitz, Troy G., Furtan, William Hartley   +2 more
core   +1 more source