Results 61 to 70 of about 1,574 (174)

Simultaneous and Direct Determination of Vancomycin and Cephalexin in Human Plasma by Using HPLC-DAD Coupled with Second-Order Calibration Algorithms

Journal of Analytical Methods in Chemistry, 2012
A simple, rapid, and sensitive method for the simultaneous determination of vancomycin and cephalexin in human plasma was developed by using HPLC-DAD with second-order calibration algorithms.
Le-Qian Hu, Chun-Ling Yin, Ya-Hui Du, Zhi-Peng Zeng   +3 more
doaj   +1 more source

Influence of soil moisture availability on dissolved organic matter properties and microbial carbon content in Poa pratensis L. rhizosphere

Бюллетень Почвенного института им. В.В. Докучаева
The goal of the work was to assess changes in microbial carbon content and the properties of dissolved organic matter (DOM) of the Poa pratensis L. rhizopshere in response to the effects of soil drying and waterlogging.
I. V. Danilin, V. A. Kholodov, A. R. Ziganshina, N. A. Danchenko, A. D. Buriak, Yu. R. Farkhodov, N. V. Yaroslavtseva   +6 more
doaj   +1 more source

Glacial Meltwater Promotes Biological Productivity and Subsequent Dissolved Organic Carbon Accumulation in the Eastern Ross Sea: Evidence From the Austral Summer of 2023

Global Biogeochemical Cycles, Volume 40, Issue 3, March 2026.
Abstract The Ross Sea, a critical region for global carbon cycling, receives increasing glacial meltwater from West Antarctica, yet the impact on regional carbon cycling remains poorly understood. A key uncertainty is how this meltwater influences dissolved organic matter (DOM), particularly in the historically inaccessible eastern Ross Sea. This study
Juyoung Son, Jinyoung Jung, Jiwoo Kim, Mi Hae Jeon, Shigeru Aoki, Youngju Lee, Tae‐Wan Kim, Sun‐Yong Ha, Jisoo Park, Jaeill Yoo, Boyeon Lee, Jong Kuk Moon, Hyoung Sul La, Taejin Kim   +13 more
wiley   +1 more source

Composition characteristics and metal binding capacity of dissolved organic matter in the agriculture‐dominated Tuhai River

River, Volume 5, Issue 1, Page 82-95, February 2026.
Abstract An essential part of river ecosystems, dissolved organic matter (DOM) has an enormous effect on the transport and variability of heavy metals. Nonetheless, our understanding of how the DOM affects heavy metal behavior in agricultural rivers remains limited.
Dongling Sang, Xin Yao, Weiwei Lü, Zhaoli Sun, Shanshan Wang, Jinye Wang, Na Jiang, YingHao Zhang, Huanguang Deng   +8 more
wiley   +1 more source

Consensus-based In-Network Computation of the PARAFAC Decomposition

CoRR, 2014
In this work, we present a new approach for the distributed computation of the PARAFAC decomposition of a third-order tensor across a network of collaborating nodes. We are interested in the case where the overall data gathered across the network can be modeled as a data tensor admitting an essentially unique PARAFAC decomposition, while each node only
Alain Y. Kibangou, André L. F. de Almeida   +1 more
openaire   +2 more sources

Dissolved Organic Matter Composition in the Laurentian Great Lakes Ice and Its Contribution to Spring Melt

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.
Abstract Dissolved organic matter (DOM) plays a vital role in lakes, but its behavior in winter is poorly understood. This study examined the differences in DOM between lake ice and the upper water column across 18 sites in the Laurentian Great Lakes, integrating in situ sampling and remotely sensed ice data to create a mass budget model to estimate ...
Anthony J. Arsenault, Nolan J. T. Pearce, Ted Ozersky, Sarah C. D’Amario, Kirill Shchapov, Hunter J. Carrick, Justin D. Chaffin, Maureen L. Coleman, Warren J. S. Currie, Jonathan P. Doubek, Rachel Eveleth, Casey M. Godwin, R. Michael McKay, Michael D. Rennie, Michael R. Twiss, Donald Uzarski, Henry A. Vanderploeg, Trista Vick‐Majors, Arthur Zastepa, Marguerite A. Xenopoulos   +19 more
wiley   +1 more source

Colored Plastic Pollution Reshapes Aquatic Microbial Community and Resistance Profile via Divergent Pseudonatural Dissolved Organic Matter

Advanced Science, Volume 13, Issue 3, 14 January 2026.
By altering the quantity and chemical composition of polyethylene‐derived dissolved organic matter, plastic color dynamically regulates bacterial metabolic interactions, thereby reshaping community resistance expression and facilitating the dissemination of antibiotic resistance.
Shuting Fang, Shuqin Liu, Jingui Huang, Yiquan Huang, Chao Chen, Qijun Ruan, Pengran Guo, Gangfeng Ouyang   +7 more
wiley   +1 more source

THREE-WAY DATA ANALYSIS OF COPPER-PARACETAMOL COMPLEX FORMATION FOR THE QUANTIFICATION OF PARACETAMOL IN PHARMACEUTICAL MATRICES

Studia Universitatis Babes-Bolyai Chemia
We present a chemometric strategy to study complex formation reactions using parallel factor analysis (PARAFAC) of three-way spectral data.UV spectra of PAR, CuSO4, and their complex were recorded at five different pH levels.
İbrahim TEĞİN, Gurbet CANPOLAT, Zehra Ceren ERTEKİN, Nihat GÜÇLÜ, Erdal DİNÇ   +4 more
doaj   +1 more source

A Comparative Study of the Application of Fluorescence Excitation-Emission Matrices Combined with Parallel Factor Analysis and Nonnegative Matrix Factorization in the Analysis of Zn Complexation by Humic Acids

Sensors, 2016
The main aim of this study was the application of excitation-emission fluorescence matrices (EEMs) combined with two decomposition methods: parallel factor analysis (PARAFAC) and nonnegative matrix factorization (NMF) to study the interaction mechanisms ...
Patrycja Boguta, Piotr M. Pieczywek, Zofia Sokołowska   +2 more
doaj   +1 more source

Seasonal hydrology and permafrost disturbance impacts on dissolved organic matter composition in High Arctic headwater catchments

Arctic Science, 2017
Arctic landscapes are experiencing intense warming and modification of precipitation regimes with climate change. Permafrost disturbances and climate change impacts on hydrology of Arctic watersheds are likely to modify the quantity and composition of ...
J. Fouché, M. J. Lafrenière, K. Rutherford, S. Lamoureux   +3 more
doaj   +1 more source