Results 31 to 40 of about 683,825 (199)

El rol del nitrógeno (N) en el crecimiento de las plantas, pigmentos de fotosíntesis y eficiencia del empleo del nitrógeno. Artículo de revisión

Agrisost, 2022
Contexto: Entre los compuestos nutricionales esenciales, el nitrógeno es un elemento vital para el crecimiento y desarrollo de plantas. Este elemento desempeña un rol fundamental en la mayoría de los procesos metabólicos de las plantas.
Amin Fathi
doaj   +1 more source

Fluorinated Methylammonium Cation Containing Perovskite Solar Cells With Over 25% Power Conversion Efficiency

Advanced Energy Materials, EarlyView.
Fluoromethylammonium iodide (FMAI) is prepared using a facile procedure through a simple nucleophilic reaction between fluoroiodomethane and ammonia in methanol and tested in n‐i‐p perovskite solar cells. FMA+ cation in combination with FA+ and Cs+ cations affords a power conversion efficiency close to 26% with a long‐term operational stability for ...
Justina Mikuciunaite, Bin Ding, Yuxuan Yang, Xiao‐Xin Gao, Vida Valipour, Yong Ding, Negar Ashari Astani, Jan Romano‐deGea, Lindsey E. K. Frederiksen, Farzaneh Fadaei Tirani, Vytautas Getautis, Yi Zhang, Mohammad Khaja Nazeeruddin, Kasparas Rakstys   +13 more
wiley   +1 more source

Nueva especie de Ramusella Hammer, 1962 (Acari, Oppiidae), de la provincia de Fars, Irán

Graellsia, 2011
Se describe una nueva especie de ácaro oribátido de la familia Oppiidae, Ramusella (Insculptoppia) farsi sp. nov., procedente de la provincia de Fars, sur de Irán. La nueva especie se caracteriza por el sensilo fusiforme con 10 largos cilios en su cabeza,
M. A. Akrami, L. S. Subías, M. Behmanesh   +2 more
doaj   +1 more source

Heavy Metal Contamination: Impacts From Plants to the Food Chain and Eco‐Friendly Amelioration Strategies

AgriFood: Journal of Agricultural Products for Food, EarlyView.
Heavy metal pollution reduces soil health and threatens food safety by entering plants; however, the use of nanoparticles, biofertilizers, and organic fertilizers such as biochar offers a promising strategy for improvement and sustainable agriculture. ABSTRACT Heavy metal (HM) pollution, resulting from human activities such as mining and the excessive ...
Sina Siavash Moghaddam, Latifeh Pourakbar, Sevda Alizadeh, Zahra Alizadeh, Jelena Popović‐Djordjević   +4 more
wiley   +1 more source

Import Wheat Tenders and the Effects of the Russian Invasion

Agribusiness, EarlyView.
ABSTRACT Risk and volatility for many commodities escalated sharply following the Russian invasion of Ukraine, creating numerous uncertainties for trading firms and importers. The purpose of this study is to analyze the bidding behavior in Egyptian wheat import tenders in the pre‐ and post‐invasion periods.
William W. Wilson, Sumadhur Shakya, Isaac Dubovoy   +2 more
wiley   +1 more source

Los Estados medio-orientales en su competencia por recursos y alianzas en África subsahariana (2000-2021) [PDF]

Revista UNISCI, 2022
El artículo explora la importancia antigua y nueva que para estos países de Oriente Medio tiene el continente africano a principios del siglo XXI. Para algunos de ellos es un interés histórico arraigado como es el caso de Egipto y su presencia en Sudán y
Rafael Bustos, Juan Carlos Pastor
doaj  

Traceability of Agri‐Food Products: The Key to Conscious Trade

Agribusiness, EarlyView.
ABSTRACT Globalization and growing concerns about sustainability have led to improvements in product traceability, quality, and sustainability. Traceability contributes to environmental protection and supports sustainable development by fostering transparency in agricultural practices and encouraging the responsible use of resources.
Scarlett Queen Almeida Bispo, Fernanda Aparecida Silva, Michelle Márcia Viana Martins, Marcelo José Braga Nonnenberg, Ruan da Silva Vianna, Carla Cristina Passos Cruz   +5 more
wiley   +1 more source

Vertical Price Transmission in Food Markets: New Evidence From Meta‐Analysis

Agribusiness, EarlyView.
ABSTRACT A growing body of empirical research has examined price dynamics along the food supply chain, yet findings remain heterogeneous and often conflicting. This study conducts a meta‐analysis of 140 studies, totaling 652 observations, to examine (1) the reported presence of asymmetric price transmission and (2) the reported direction of price ...
Sushan K C, Xiaoli Etienne, Andres Trujillo‐Barrera   +2 more
wiley   +1 more source

Desierto, Clima y Turismo. La importancia de la información climática para la gestión y planificación turística en la provincia de Isfahán (Irán)

Investigaciones Geográficas
La realización de actividades de ocio y recreación en entornos desérticos plantea algunos problemas críticos que afectan a la producción y al consumo turístico.
Fatemeh Nourmohammadi-Najafabadi, María Belén Gómez-Martín   +1 more
doaj   +1 more source

Large Language Model‐Based Chatbots in Higher Education

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The use of large language models (LLMs) in higher education can facilitate personalized learning experiences, advance asynchronized learning, and support instructors, students, and researchers across diverse fields. The development of regulations and guidelines that address ethical and legal issues is essential to ensure safe and responsible adaptation
Defne Yigci, Merve Eryilmaz, Ail K. Yetisen, Savas Tasoglu, Aydogan Ozcan   +4 more
wiley   +1 more source