Results 21 to 30 of about 4,128,607 (290)

Does Nitrate Enrichment Accelerate Organic Matter Turnover in Subterranean Estuaries? [PDF]

Frontiers in Marine Science, 2021
Due to the widespread pollution of coastal groundwaters with fertilizers, submarine groundwater discharge (SGD) is often thought to be a large dissolved inorganic nitrogen (DIN) source to the ocean. Whether this N is autochthonous or allochthonous to the subterranean estuary (STE), the availability of large quantities of DIN can nevertheless interact ...
J. Severino P. Ibánhez, J. Severino P. Ibánhez, Xosé Antón Álvarez-Salgado, Carlos Rocha   +3 more
openaire   +3 more sources

Soil Organic Matter Changes in Lithuanian Soils: Experiences and Results [PDF]

, 2009
Lithuania, Soil organic matter, Eutric Albeluvisol, Soil conservation, Carbon sequestration, Land management, Crop rotationData has been obtained from sandy loam Eutric Albeluvisol-ABe at the Kaltinenai Research Station of the Lithuanian Institute of ...
Jankauskienė, Genovaitė, Slepetiene, Alvyra, Fullen, Michael A., Booth, Colin A., Jankauskas, Benediktas   +4 more
core   +3 more sources

The petrological characteristics and significance of organic-rich shale in the Chang 7 member of the Yanchang Formation, south margin of the Ordos basin, central China

Petroleum Science, 2019
The organic-rich shale of the Chang 7 member is the most important source rock in the Ordos basin. The sedimentary environment and the controlling factors of organic matter enrichment, however, are still in contention. In this investigation, the Yishicun
Sen Li, Ru-Kai Zhu, Jing-Wei Cui, Zhong Luo, Jing-Gang Cui, Han Liu, Wei-Qiang Li   +6 more
doaj   +1 more source

Exploratory analysis of excitation-emission matrix fluorescence spectra with self-organizing maps as a basis for determination of organic matter removal efficiency at water treatment works [PDF]

, 2009
In the paper, the self-organizing map (SOM) was employed for the exploratory analysis of fluorescence excitation-emission data characterizing organic matter removal efficiency at 16 water treatment works in the UK.
Bridgeman, John, Baker, Andy, Bieroza, Magdalena   +2 more
core   +5 more sources

Differential response of high-elevation planktonic bacterial community structure and metabolism to experimental nutrient enrichment. [PDF]

PLoS ONE, 2011
Nutrient enrichment of high-elevation freshwater ecosystems by atmospheric deposition is increasing worldwide, and bacteria are a key conduit for the metabolism of organic matter in these oligotrophic environments.
Craig E Nelson, Craig A Carlson
doaj   +1 more source

Litter Quality of Populus Species as Affected by Free-Air CO2 Enrichment and N-Fertilization [PDF]

, 2009
The effect of elevated CO2 and nitrogen fertilization on the molecular chemistry of litter of three Populus species and associated soil organic matter (SOM) was investigated by pyrolysis-gas chromatography/mass spectrometry.
Vermue, E., Hoosbeek, M.R., Marcel R. Hoosbeek, Esther Vermue, Peter Buurman, Buurman, P.   +5 more
core   +1 more source

The Volcanic Impacts on the Formation of Organic-Rich Shales From the Freshwater to Saline Lakes: Cases Study in the Ordos and the Junggar Basins

Frontiers in Earth Science, 2022
High organic matter abundance is necessary for large-scale hydrocarbon accumulation and enrichment in shale oil. Comparing conventional marine basins with lacustrine ones, the formation of organic matter in the latter usually changes rapidly with strong ...
Xiaojun Wang, Jiahong Gao, Liang Zhong, Wenjun He, Zhijun Jin, Rukai Zhu, Rukai Zhu, Xinping Liang, Kouqi Liu, Wang Zhang   +9 more
doaj   +1 more source

Petrologic characteristics and genetic model of lacustrine lamellar fine-grained rock and its significance for shale oil exploration: A case study of Permian Lucaogou Formation in Malang sag, Santanghu Basin, NW China

Petroleum Exploration and Development, 2015
Taking the Permian Lucaogou Formation in the Malang sag, Santanghu Basin as an example, by using petrological methods such as high resolution core image scanning, conventional thin section, scanning electron microscope and energy spectrum analysis and ...
Bo LIU, Yanfang LÜ, Yuanlin MENG, Xinning LI, Xiaobo GUO, Qiang MA, Wanchun ZHAO   +6 more
doaj   +1 more source

New organic matter degradation proxies: Valid in lake systems? [PDF]

, 2004
We determined concentrations and diagenetic state of organic matter in two cores from Lake Zug, Switzerland. To obtain a general picture of organic matter decay in the lake, we measured bulk parameters such as total organic carbon, total nitrogen, and ...
C. J. Schubert, M. Dittrich, G. L. Cowie, S. Peiffer, Peiffer, S., A. N. Meckler, Schubert, C. J., Cowie, G. L., Dittrich, M., Meckler, A. N., Schubert, C.J. (author), Meckler, A.N. (author), Dittrich, M. (author), Peiffer, S. (author), Cowie, G.L. (author)   +14 more
core   +1 more source

Quartz Origins and Paleoenvironmental Controls on Organic Matter Accumulation of Marine Shale in the Ordovician Wulalike Formation, Northwestern Ordos Basin, China: Significance for Shale Gas Exploration

Energies, 2023
The Ordovician Wulalike marine siliceous shale is a notable hydrocarbon source rock in the Northwestern Ordos Basin. However, the causes of quartz and organic matter enrichment are still a mystery to experts.
Yanni Zhang, Rongxi Li, Shengli Xi, Jianwen Gao, Lei Chen, Hexin Huang, Bangsheng Zhao, Ahmed Khaled   +7 more
doaj   +1 more source