Results 51 to 60 of about 31,994 (218)

The caliph and the falcons: a ninth‐century history from Iceland to Iraq

Early Medieval Europe, EarlyView.
In the late ninth and early tenth centuries, an extraordinary number of falcons were given to the ʿAbbāsid caliphs in Baghdad, many of which were white. Gifts from competing dynasties in the northern provinces of the Caliphate, at least some of these birds were almost certainly gyrfalcons from near the Arctic Circle.
Caitlin Ellis, Sam Ottewill‐Soulsby
wiley   +1 more source

Rural Capitalists and Development in Colonial Africa: A Comparative Analysis

Journal of Agrarian Change, EarlyView.
ABSTRACT This paper explores the emergence and role of rural capitalists in colonial Sub‐Saharan Africa by comparing three peasant‐based economies: Bechuanaland, the Gold Coast and Tanganyika. Using social tables, we estimate the population and income shares of better earning agricultural producers and assess their impact on rural inequality and ...
Prince Young Aboagye, Ellen Hillbom, Sascha Klocke   +2 more
wiley   +1 more source

How Different Traditional and Modern Coffee Brewing Methods Affect Its Aroma, Chemistry, Health Effects and Safety Attributes?—A Comprehensive Review to Maximize Coffee Brew Quality

eFood, Volume 7, Issue 2, April 2026.
This review article provides a comprehensive analysis of coffee pre‐brewing techniques, focusing on the methodology and key parameters involved in each coffee brewing process. It also summarizes how different brewing methods affect the coffee metabolome, antioxidant levels, aroma, and physicochemical features.
Enas A. El‐Hawary, Hania A. Guirguis, Nik Muhammad Azhar Nik Daud, Mohd Asraf Zainudin, Ahmed Mediani, Mohamed A. Farag   +5 more
wiley   +1 more source

Methane Emissions From Flame Curtain Pyrolysis (Kon‐Tiki)

GCB Bioenergy, Volume 18, Issue 4, April 2026.
Flame curtain pyrolysis enables decentralized biochar production, but its net climate benefit depends on the magnitude of methane emissions caused during production. Methane emissions were below 5 g CH4 kg−1 biochar for dry feedstocks but increased for moist feedstocks. Pyrolysis emitted less methane than open burning of wheat straw. ABSTRACT Pyrogenic
Simon Lotz, Nikolas Hagemann, Dirk Hölscher, Hans‐Peter Schmidt   +3 more
wiley   +1 more source

Depositional Facies, Sequence Stratigraphy, and Diagenesis of Lower Cretaceous Carbonate Reservoir, Southern Iraq: Implications for Petroleum Exploration

Journal of Petroleum Geology, Volume 49, Issue 2, Page 312-345, April 2026.
ABSTRACT The Lower Cretaceous Yamama Formation of southern Iraq represents a key carbonate reservoir within Iraq and the Middle East, yet its complex depositional facies architecture and diagenetic alterations present challenges for predicting reservoir quality.
A. K. A. Mohammed, F. Velledits, I. Q. Mohammed, M. Alsuwaidi, H. Mansurbeg, F. Kristály, D. K. Ivanova, Eloi González‐Esvertit, A. Awdal   +8 more
wiley   +1 more source

Mid‐Infrared Spectroscopy and Machine Learning for Chlorogenic Acid Quantification in Coffee

Chemie Ingenieur Technik, Volume 98, Issue 3, Page 85-97, March 2026.
Chlorogenic acid (CGA) concentration in coffee was predicted using mid‐infrared (MIR) spectroscopy and a machine learning approach. Forty‐four roasting stages (140–220 °C) plus a green coffee control were analyzed. A multilayer perceptron regressor, trained on preprocessed MIR data, outperformed traditional peak analysis, enabling accurate and ...
Deborah Herdt, Felix Wühler, Thomas Kunz, Victoria Schiwek, Sarah Kühnemuth, Brian Gibson, Matthias Rädle   +6 more
wiley   +1 more source

FAKTOR-FAKTOR PENDUKUNG KEBERLANJUTAN USAHATANI KOPI ARABIKA DI PROVINSI BALI

Soca: Jurnal Sosial Ekonomi Pertanian, 2020
Coffee is the mainstay of Balinese exports. But the productivity of Balinese Arabica coffee is still low. The sustainability of Bali Arabica Coffee farming is threatened.
Ida Ayu Listia Dewi, I Made Sudarma
doaj   +1 more source

Direct Ambient Mass Spectrometry for Food, Beverage, and Agricultural Sample Analysis and Research

Mass Spectrometry Reviews, Volume 45, Issue 2, Page 429-452, March/April 2026.
ABSTRACT Ambient and direct mass spectrometry (MS) methods are becoming increasingly used for the rapid analysis of food, beverage and agricultural samples. Novel ionization approaches combined with targeted, or untargeted workflows provide analytical outcomes within a greatly reduced time period compared to traditional separation science coupled with ...
Leigh M. Schmidtke, Liang Jiang, Morphy Dumlao, William A. Donald   +3 more
wiley   +1 more source

Potential distribution and susceptibility of Coffea arabica L. to climate change impacts

PLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 693-711, March 2026.
Ecological niche models (ENMs) are vital for understanding the impact of historical factors on ecosystems and predicting future climate change scenarios. These models help assess how environmental shifts affect agricultural species like coffee, which supports millions of people globally.
Yuliana Grisel García‐Martínez, Andrés Lira‐Noriega   +1 more
wiley   +1 more source

Evaluation of the Feasibility of Coffee Variety Classification from Bean Images Using Convolutional Neural Networks

Acta Universitatis Cibiniensis. Series E: Food Technology
The study evaluates the feasibility of classifying Arabica and Robusta coffee beans using convolutional neural networks (CNNs). A custom CNN model (CNN_Coffee_Classifier) was developed and its performance was compared to that of three state-of-the-art ...
Zimka Michał, Pentoś Katarzyna
doaj   +1 more source