Results 91 to 100 of about 128,824 (253)

A framework for tracing the sources of nitrate in surface water through remote sensing data coupled with machine learning

npj Clean Water
As an integral component of the global nitrogen cycle, nitrate are readily transferred from urban sewage discharge, agricultural activities, and atmospheric sedimentation to surface water. This paper introduces an innovative framework that combines multi-
Di Tian, Xinfeng Zhao, Lei Gao, Tao Jiang, Zuobing Liang, Zaizhi Yang, Pengcheng Zhang, Qirui Wu, Kun Ren, Chenchen Yang, Rui Li, Shaoheng Li, Yingjie Cao, Yingxue Xuan, Jianyao Chen, Aiping Zhu   +15 more
doaj   +1 more source

A New foodweb based on microbes in calcitic caves: The Cansiliella (Beetles) case in Northern Italy [PDF]

International Journal of Speleology, 2011
The troglobitic beetle, Cansiliella servadeii (Leptodirini), has specialized mouthparts modified for browsing and feeding under percolating water on moonmilk, a speleothem formation in Grotta della Foos, Italy. Results from analyses of stable isotopes of
Paoletti Maurizio G., Beggio Mattia, Dreon Angelo Leandro, Pamio Alberto, Gomiero Tiziano, Brilli Mauro, Dorigo Luca, Concheri Giuseppe, Squartini Andrea, Summers Engel Annette   +9 more
doaj  

Changes in accumulation of organic matter and stable carbon and nitrogen isotopes in sediments of two Slovenian mountain lakes (Lake Ledvica and Lake Planina), induced by eutrophication changes [PDF]

, 2006
Polona Vreča, Gregor Muri
openalex   +1 more source

85Kr and 39Ar background in GENIUS

, 2003
GENIUS is a proposal for a large scale detector of rare events like double beta decay, cold dark matter and low-energy solar neutrinos in real time. The idea of GENIUS is to operate a large amount of ``naked'' Ge detectors in liquid nitrogen, with the ...
Baudis, Baudis, C Tomei, Firestone, H.V Klapdor Kleingrothaus, Klapdor-Kleingrothaus, Klapdor-Kleingrothaus, Klapdor-Kleingrothaus, Klapdor-Kleingrothaus, Tsoulfanidis   +9 more
core   +1 more source

Plio‐Pleistocene denitrification in the eastern tropical North Pacific: Intensification at 2.1 Ma

Geochemistry, Geophysics, Geosystems, 2008
Global climate has changed substantially over the past ∼4 million years (Ma) toward, on average, colder conditions and higher amplitude oscillation between glacial and interglacial periods.
Zhonghui Liu, Mark A. Altabet, Timothy D. Herbert   +2 more
doaj   +1 more source

Quantifying carbon allocation to mycorrhizal fungi by temperate forest tree species across a nitrogen availability gradient [PDF]

, 2013
Terrestrial ecosystems make up the largest carbon pool with a major portion of that being forests. With carbon being a major concern due to global climate change, being able to make accurate models is increasingly important. Studies have shown that trees
Tumber-Davila, Shersingh Joseph
core   +1 more source

Stable carbon and nitrogen isotopes identify nuanced dietary changes from the Bronze and Iron Ages on the Great Hungarian Plain. [PDF]

Sci Rep, 2022
McCall A, Gamarra B, Carlson KSD, Bernert Z, Cséki A, Csengeri P, Domboróczki L, Endrődi A, Hellebrandt M, Horváth A, Király Á, Kiss K, Koós J, Kovács P, Köhler K, Szolnoki L, Zoffmann ZK, Sirak K, Szeniczey T, Dani J, Hajdu T, Pinhasi R.   +21 more
europepmc   +1 more source

Impact of intensifying nitrogen limitation on ocean net primary production is fingerprinted by nitrogen isotopes. [PDF]

Nat Commun, 2021
Buchanan PJ, Aumont O, Bopp L, Mahaffey C, Tagliabue A.   +4 more
europepmc   +1 more source

Carbon, nitrogen and sulfur isotopic values of human hair from Mexico

, 2020
Saskia Ammer
openalex   +1 more source

Tracing nitrate sources with dual isotopes and long term monitoring of nitrogen species in the Yellow River, China

Scientific Reports, 2017
A heavy load of nitrogenous compounds reflects nutrient loss and influences water quality in large rivers. Nitrogenous concentrations and dual isotopes of nitrate were measured to ascertain the spatial and temporal distributions of nitrate transformation
Fu-Jun Yue, Si-Liang Li, Cong-Qiang Liu, Zhi-Qi Zhao, Hu Ding   +4 more
doaj   +1 more source