Results 41 to 50 of about 5,105 (201)

Landscape Influence on the Browning of a Lake Watershed in the Adirondack Region of New York, USA

Soil Systems, 2020
Watershed recovery from long-term acidification in the northeastern U.S. has been characterized by an increase in the influx of dissolved organic matter (DOM) into surface waters.
Nicholas A. LoRusso, Marykate McHale, Patrick McHale, Mario Montesdeoca, Teng Zeng, Charles T. Driscoll   +5 more
doaj   +1 more source

From fresh to marine waters: characterization and fate of dissolved organic matter in the Lena River delta region, Siberia

Frontiers in Marine Science, 2015
Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea.
Rafael eGonçalves-Araujo, Rafael eGonçalves-Araujo, Colin Andrew Stedmon, Birgit eHeim, Ivan eDubinenkov, Ivan eDubinenkov, Alexandra eKraberg, Denis eMoiseev, Astrid eBracher, Astrid eBracher   +9 more
doaj   +1 more source

Candecomp/Parafac: From Diverging Components to a Decomposition in Block Terms [PDF]

SIAM Journal on Matrix Analysis and Applications, 2012
Fitting an R-component Candecomp/Parafac (CP) decomposition to a multiway array or higher-order tensor Z is equivalent to finding a best rank-R approximation of Z. Such a best rank-R approximation may not exist due to the fact that the set of multiway arrays with rank at most R is not closed. In this case, trying to compute the approximation results in
openaire   +3 more sources

Smooth and Probabilistic PARAFAC Model with Auxiliary Covariates

Journal of Computational and Graphical Statistics, 2023
In immunological and clinical studies, matrix-valued time-series data clustering is increasingly popular. Researchers are interested in finding low-dimensional embedding of subjects based on potentially high-dimensional longitudinal features and investigating relationships between static clinical covariates and the embedding.
openaire   +3 more sources

Depth-dependent Photodegradation of Marine Dissolved Organic Matter

Frontiers in Marine Science, 2015
Marine dissolved organic matter (DOM) in surface and deep waters of the eastern Atlantic Ocean and Sargasso Sea was analyzed by excitation emission matrix (EEM) fluorescence spectroscopy and parallel factor analysis (PARAFAC). Photo-degradation with semi-
Stephen Andrew Timko, Anastasia eMaydanov, Sandra L Pittelli, Maureen H Conte, Maureen H Conte, William J Cooper, Boris P Koch, Boris P Koch, Philippe eSchmitt-Kopplin, Philippe eSchmitt-Kopplin, Michael eGonsior   +10 more
doaj   +1 more source

Carbon‐Negative Upcycling of Sewage Sludge into Superiorly Stable Gel Via Liquid‐Phase Utilization Strategy for Water‐Remediation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work developed a low‐temperature sludge hydrothermal coupled with gel crosslinking strategy which could upgrade the waste liquid generated from sewage sludge hydrothermal treatment into the hydrothermal‐liquid‐gel. The inventive hydrothermal‐liquid‐gel exhibited the enhanced pollutant removal capability, high synthetic stability, and superior ...
Zifan Liu, Sunxinyi Wang, Lingxiao Lu, Weiguo Zhang, Qiang Zheng, Cailiang Yue, Huimin Chang, Xiaohui Lu, Ming Xu, Zhi Qian, Qing Zhou, Fuqiang Liu, Baoshan Xing   +12 more
wiley   +1 more source

PARAFAC analysis of fluorescence spectra of components of NDR.

, 2023
PARAFAC analysis of fluorescence spectra of components of NDR.
Tao Chen (75911), Mengyu Liu (2890397), Siju Zhang (7361618), Jingyao Sun (5831396), Fei Xu (368913), Qiang Kong (8694435), Zheng Zhao (182853), Haihan Tian (17131726), Ruipeng Sun (17131729)   +8 more
core   +1 more source

Transmit Beamspace-Based Unitary Parallel Factor Method for DOD and DOA Estimation in Bistatic MIMO Radar

IEEE Access, 2018
In this paper, a novel transmit beamspace (TB)-based unitary parallel factor (PARAFAC) algorithm is proposed for direction-of-departure (DOD) and direction-of-arrival estimation in bistatic multiple-input multiple-output (MIMO) radar.
Baoqing Xu, Yongbo Zhao
doaj   +1 more source

Wildfire in the Surrounding Landscape Alters Limnological Conditions and Plankton Communities in a Tropical Reservoir

International Review of Hydrobiology, Volume 111, Issue 2, December 2026.
ABSTRACT Wildfires are becoming increasingly frequent and severe as a consequence of climate change. Their impacts on terrestrial ecosystems and on the atmosphere include the release of gases and ash, as well as enhanced soil susceptibility to erosion and the downstream transport of materials into aquatic systems.
Daniel Guido Giongo, Edna Viviana Calpa‐Anaguano, Larissa Broggio Raymundo, Eloisa Hummer, Israel Cassiano‐Oliveira, Karime de Araujo‐Paina, Gilmar Perbiche‐Neves, Hugo Sarmento   +7 more
wiley   +1 more source

Organic Matter Dynamics and Biogeochemical Signatures in Lakes From the Prairies to Tundra in Western Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Climate‐driven poleward shifts of terrestrial ecosystems are expected to alter organic matter inputs and biogeochemical processes in northern lakes. In regions lacking long‐term observations, latitudinal gradients provide valuable space‐for‐time substitutions for predicting these changes.
Vilmantas Prėskienis, E. Henriikka Kivilä, Matthew J. Bogard, Dënë Cheecham‐Uhrich, Jules M. Blais, Milla Rautio   +5 more
wiley   +1 more source