Results 81 to 90 of about 553,725 (310)

Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments

Nature Communications, 2023
Hadal trenches are unique geological and ecological systems located along subduction zones. Earthquake-triggered turbidites act as efficient transport pathways of organic carbon (OC), yet remineralization and transformation of OC in these systems are not
Mengfan Chu, Rui Bao, Michael Strasser, Ken Ikehara, Jez Everest, Lena Maeda, Katharina Hochmuth, Li Xu, Ann McNichol, Piero Bellanova, Troy Rasbury, Martin Kölling, Natascha Riedinger, Joel Johnson, Min Luo, Christian März, Susanne Straub, Kana Jitsuno, Morgane Brunet, Zhirong Cai, Antonio Cattaneo, Kanhsi Hsiung, Takashi Ishizawa, Takuya Itaki, Toshiya Kanamatsu, Myra Keep, Arata Kioka, Cecilia McHugh, Aaron Micallef, Dhananjai Pandey, Jean Noël Proust, Yasufumi Satoguchi, Derek Sawyer, Chloé Seibert, Maxwell Silver, Joonas Virtasalo, Yonghong Wang, Ting-Wei Wu, Sarah Zellers   +38 more
doaj   +1 more source

Dissolved Organic Carbon Cycling in Forested Watersheds: A Carbon Isotope Approach [PDF]

Water Resources Research, 1990
Dissolved organic carbon (DOC) is important in the acid‐base chemistry of acid‐sensitive freshwater systems; in the complexation, mobility, persistence, and toxicity of metals and other pollutants; and in lake carbon metabolism. Carbon isotopes (13C and 14C) are used to study the origin, transport, and fate of DOC in a softwater catchment in central ...
Schiff, SL, Aravena, R, Trumbore, SE, Dillon, PJ   +3 more
openaire   +4 more sources

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

Advanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser, Felix Drechsler, Nora Brachhold, Florian Kerber, Christos G. Aneziris   +4 more
wiley   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

The biogeochemical influence of nitrate, dissolved oxygen, and dissolved organic carbon on stream nitrate uptake [PDF]

, 2009
Streams are potential hotspots for retention and removal of NO3−, and understanding the mechanisms that enhance NO3− reactivity in stream systems is critical for predicting and preventing eutrophication.
Jacobs, Jennifer M., McDowell, William H., Thouin, Joseph A., Vorosmarty, Charles J., Wollheim, Wilfred M.   +4 more
core   +1 more source

d13C tracing of dissolved inorganic carbon sources in Patagonian rivers (Argentina) [PDF]

, 2005
The main Patagonian rivers (Colorado, Negro, Chubut, Deseado, Coyle, Chico, Santa Cruz and Gallegos) were sampled between September 1995 and November 1998 to determine their chemical and isotopic compositions, the origins of the suspended and dissolved ...
Brunet, Frédéric, Depetris, Pedro J., Gaiero, Diego M., Gauthier-Lafaye, François, Probst, Jean-Luc, Stille, Peter   +5 more
core   +4 more sources

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

Spectral Analysis of Dissolved Organic Carbon in Seawater by Combined Absorption and Fluorescence Technology

Journal of Marine Science and Engineering
Dissolved organic carbon refers to soluble carbon substances in water bodies and can be used as an important indicator for water pollution. Spectroscopic detection is commonly used to detect dissolved organic carbon in seawater.
Xuan Cao, Feng Xiong, Yang Wang, Haikuan Ma, Yanmin Zhang, Yan Liu, Xiangfeng Kong, Jingru Wang, Qian Shi, Pingping Fan, Yunzhou Li, Ning Wu   +11 more
doaj   +1 more source

Isotopes of Carbon in a Karst Aquifer of the Cumberland Plateau of Kentucky, USA

Acta Carsologica, 2010
In this study, the concentration and isotopic composition of dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) are measured in the karst groundwater of the Otter Creek watershed of the Cumberland Plateau of Kentucky, USA.
Lee J. Florea
doaj   +1 more source

Dissolved organic carbon in permafrost regions: A review

Science China Earth Sciences, 2019
A large quantity of organic carbon (C) is stored in northern and elevational permafrost regions. A portion of this large terrestrial organic C pool will be transferred by water into soil solution (~0.4 Pg C yr−1) (1 Pg=1015 g), rivers (~0.06 Pg C yr−1), wetlands, lakes, and oceans.
Ma, Qiang, Jin, Huijun, Yu, Congrong, Bense, Victor F.   +3 more
openaire   +1 more source