Results 51 to 60 of about 1,618 (108)

Microbial nitrogen removal and recycling in the redox transition zone of a meromictic lake and its coupling to sulfur cycling

Limnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract Organotrophic denitrification is an important nitrogen (N) removal process in lakes, but alternative N reduction processes such as lithotrophic sulfur (S)‐oxidizing denitrification may be greatly underappreciated. We studied the redox transition zone (RTZ) in the meromictic water column of the North Basin of Lake Lugano (Switzerland) to ...
Jana Tischer, Moritz F. Lehmann, Guangyi Su, Fabio Lepori, Jakob Zopfi   +4 more
wiley   +1 more source

Tailorable Nanoparticles for Magnetic Water Cleaning of Polychlorinated Biphenyls

Small Methods, Volume 10, Issue 2, 22 January 2026.
Polychlorinated biphenyls (PCBs) are human‐made persistent organic pollutants omnipresent in the earth's hydrosphere, which are reported hazardous to humans as well as wildlife. This study presents surface functionalized magnetic nanoparticles that can remove such contaminants from water with an adjustable preference for most concerning compounds ...
Lukas Müller, Anna Zehetmeier, Anna Höfling, Henrik Gaß, Johannes Voß, Daniel Krappmann, Linda Rockmann, Elias Harrer, Dirk Zahn, Andreas Hirsch, Marcus Halik   +10 more
wiley   +1 more source

The December 2018 eruption at Etna volcano: a geochemical study on melt and fluid inclusions

Frontiers in Earth Science
This study focus on the Mt Etna December 2018 eruption with the aim of investigating the geochemical characteristics of the feeding magma. New data on major and trace element geochemistry of olivine-hosted melt inclusions (MI) in volcanic products are ...
Alessandra Correale, Rosa Anna Corsaro, Lucia Miraglia, Antonio Paonita, Silvio G. Rotolo, Silvio G. Rotolo   +5 more
doaj   +1 more source

Soil Gas Investigations in Hatay‐Reyhanlı (Türkiye): Implications for Buried Fault Detection and Seismic Hazard Assessment

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract This study presents a soil gas geochemical survey in the Kırcaoğlu and Reyhanlı regions of Hatay Province, southeastern Türkiye, following the 2023 Kahramanmaraş earthquake doublet. The aim was to identify concealed faults and assess seismic hazard through analysis of soil CO2 flux, CO2 and 222Rn concentrations, and carbon and helium isotopic ...
G. Yüce, C. C. Fu, W. D’Alessandro, B. Kahraman, B. Kürkcüoglu, F. Italiano, A. H. Gülbay, H. Elmacı, M. İçhedef, A. Özdemir, H. Akıllı, D. Yasin, Ş. D. Gürboğa, A. Demirtaş, L. H. Lin, P. L. Wang, S. Över   +16 more
wiley   +1 more source

The Magmatic‐Hydrothermal System of the Three Sisters Volcanic Cluster, Oregon, Imaged From Field Gravity Measurements

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract From 2019 to 2024, gravity surveys were conducted at the Three Sisters volcanic cluster (TSVC), measuring 246 gravity sites using a spring relative gravimeter. We calculated the residual Bouguer anomaly and identified three main zones with negative anomalies, ranging from −4 to −8 mGal, located southwest and west of South Sister, within an ...
Hélène Le Mével, Nathan L. Andersen, Annika E. Dechert, Josef Dufek   +3 more
wiley   +1 more source

Physiology of nitrogen: A life or death matter

Experimental Physiology, Volume 111, Issue 1, Page 270-282, 1 January 2026.
Abstract With each breath, four out of every five molecules we inspire are nitrogen (N2), since this gas constitutes ∼80% of the atmospheric air that surrounds us. Despite its abundance and unlike molecular oxygen, N2 has traditionally held less appeal among physiologists given its lack of reactivity and corresponding inability to support combustion or
Damian M. Bailey, Vaughan G. Macefield, David C. Poole   +2 more
wiley   +1 more source

Physical simulation experiments on competitive dissolution of helium in helium-containing to helium-rich gas reservoirs

Meitian dizhi yu kantan
Background and Purpose Helium is widely applied in high-tech and scientific research fields due to its unique physicochemical properties. Formation water plays a key role in helium migration and enrichment. Typically, in the form of dissolved gas, helium is transported in pores or fractures by formation water. When helium-rich fluids migrate to shallow
Yi ZOU, Qingyong LUO, Jianfa CHEN, Huayao ZOU, Tao DU, Xiaoqiang LIU, Xinyong CAI, Chengming YU, Zilong FANG   +8 more
openaire   +1 more source

Pore Geometry and Its Influences on Methane Adsorption in Shale Gas Reservoirs: A Case Study of Longmaxi Shale in the Da’an Area, Chongqing, China

Journal of GeoEnergy, Volume 2026, Issue 1, 2026.
Understanding pore structure and methane sorption (MS) in shale gas reservoirs is critical for accurately estimating gas‐in‐place and prospective natural gas resources. The Longmaxi Shale, a leading formation for deep shale gas development in China, faces challenges in its economic production due to its strong spatial heterogeneity, complex pore ...
Xianggang Duan, Qiming Wang, Pengfei Jiao, Weixing Yan, Qinhong Hu, Shize Zhang, Jianxin Liu, Jin Chang, Tao Wang, Zhe Yu, Chen Zhao, Sun Mengdi   +11 more
wiley   +1 more source

Evaluation of potential helium source rocks and helium enrichment factors in coalbed methane in the eastern margin of Ordos basin. [PDF]

Sci Rep
Chen Y, Tao S, Kang R, Gao J, Yang Y, Fang X, Song W, Chen Y, Liu X.   +8 more
europepmc   +1 more source

Reservoir characterization and rock typing of the gas-bearing El Wastani Formation, Simian Field, offshore Nile Delta. [PDF]

Sci Rep
Anwar S, El Kadi H, Reda M, Mostafa T.
europepmc   +1 more source