Results 141 to 150 of about 20,788 (267)

Arc Heat Flow and Magmatic Heat Budgets

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract We evaluate hydrothermal heat loss from 11 volcanic‐arc segments (∼6,000 km of arc length, ∼10% of the global total), motivated by the observation that much magmatic heat ultimately crosses the land surface as heated aqueous fluid. Heat loss takes place by volcanic eruption, geothermal heat conduction to the surface, fumarolic (vapor ...
S. E. Ingebritsen, Kazuki Sawayama, Yuri Taran, Giovanni Chiodini, Tsuneomi Kagiyama, Hiroshi Shinohara, Julie V. Rowland, Benjamin A. Black   +7 more
wiley   +1 more source

The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition

, 2013
Results of X-Ray Diffraction (XRD) analysis, Triple Oxygen Isotope analysis and Scanning Electron Microscopic (SEM) studies are presented for stone fragments recovered from the North Central Province of Sri Lanka following a witnessed fireball event on ...
Gibson, Carl H., Hoover, Richard B., Miyake, Nori, Oldroyd, Andrew, Samaranayake, Anil, Wallis, Daryl H., Wallis, Jamie, Wallis, M. K., Wickramarathne, K., Wickramasinghe, N. C.   +9 more
core  

ISOTOPIC FRACTIONATION OF SULFUR IN GYPSUM CRYSTALS

Chinese Journal of Applied Chemistry, 1989
Jianzhuang Jiang, Qinglian(T. Zhang
openaire   +1 more source

Viral Assemblages of a Hypersaline Estuary Show Divergent Responses to Freshwater and Temperature Disturbances

Environmental Microbiology Reports, Volume 18, Issue 3, June 2026.
Metagenomic assessment of viromes at two sites in Laguna Madre, a hypersaline estuary, showed unique viral communities. Extreme cold temperature changes showed a greater propensity to enrich AMGs toward oxidative phosphorylation and sulfur metabolism. Extreme shifts in salinity led to homogenized viral taxonomic groups more similar to those typically ...
Jordan R. Walker, Paxton T. Bachand, Jeffrey W. Turner, Jessica M. Labonté   +3 more
wiley   +1 more source

Guard cell photorespiration controls stomata behavior and development

New Phytologist, Volume 250, Issue 5, Page 3182-3196, June 2026.
Summary Photorespiration is traditionally viewed as a limitation to photosynthetic efficiency. However, it is mandatory for safeguarding the Calvin–Benson–Bassham cycle from inhibitory byproducts through Rubisco‐mediated oxidative misfire and is tightly integrated with primary metabolism.
Hu Sun, Inken Thiemann, Nils Schmidt, Johannes Kromdijk, Tracy Lawson, Martin Hagemann, Stefan Timm   +6 more
wiley   +1 more source

The relation between isotopic composition of argon and carbon in natural gases [PDF]

The methods and results of determination of the argon and carbon isotope compositions of hydrocarbon gases of Mezozoic complexes of Western Siberia are presented.
Gavrilov, Y. Y., Teplinskiy, G. I., Zhurov, Y. A.   +2 more
core   +1 more source

Barium Isotopes Indicate Spatiotemporal Heterogeneity of Marine Primary Productivity During the Toarcian Oceanic Anoxic Event

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Ma) was characterized by globally enhanced organic‐carbon burial and a negative carbon‐isotope excursion (N‐CIE). However, the role of marine productivity at this time, and its spatiotemporal variability, is unclear.
Wenhan Chen, David B. Kemp, Hugh C. Jenkyns, Stuart A. Robinson, Yibo Lin, Jun Hu, Zhong Han, Tianchen He, Feifei Zhang, Xilei Sun, Guangyu Shi, Chao Li   +11 more
wiley   +1 more source

Distal Marine Mercury Signals in Peak Late Paleozoic Ice Age: Implications for Aeolian Versus Volcanic Inputs

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract An investigation of the relationships among large igneous province (LIP), carbon cycling, and climate change is central to understanding Earth system. During Glacial III, the most intense phase of Late Paleozoic Ice Age, the influence of coeval LIP on the carbon cycle and climate remains debated.
Yuzhu Ge, J. E. Sonke, L. Laffont, T. R. Them II, A. Bekker, Huaguo Wen   +5 more
wiley   +1 more source

Study of REE behaviors, fluid inclusions, and O, S stable Isotopes in Zafar-abad iron skarn deposit, NW Divandarreh, Kordestan province

Journal of Economic Geology, 2014
Introduction The Zafar-abad iron ore deposit, situated in the NW part of Divandarreh (lat. 36°01'14" and long. 46°58'22"). The ore body is located on the northern margin of the Sanandaj-Sirjan igneous metamorphic zone. The Zafar-abad Fe-skarn deposit is
Mehrdad Barati, Meisam Gholipoor
doaj  

Metabologenomic Hallmark‐Based Discovery of Bacterial Thioamides as a New Lead against Drug‐Resistant Pancreatic Cancer

Advanced Science, Volume 13, Issue 28, 18 May 2026.
A targeted metabologenomic strategy integrating genomic and metabolomic hallmarks enabled the discovery of two new thioamides, thiogochangamides A and B, from bacteria. Their absolute configurations, previously unresolved within the thioviridamide family, were fully assigned through various chemical derivatizations and computational analysis ...
Young Eun Du, Eun Seo Bae, Thinh T. M. Bui, Seok Beom Lee, Dahan Kim, Jin‐Gyeong Park, Yongjoo Park, Soo Yeon Park, Sangwook Kang, Beomsu Lee, Daniel Shin, Yun Pyo Kang, In‐Gyun Lee, Dae‐Duk Kim, Seokhee Kim, Suckchang Hong, Kyuho Moon, Sang Kook Lee, Dong‐Chan Oh   +18 more
wiley   +1 more source