Results 51 to 60 of about 1,503 (160)

Fluorescence quantum yields of natural organic matter and organic compounds: Implications for the fluorescence-based interpretation of organic matter composition

open access: yesFrontiers in Marine Science, 2015
Absorbance and fluorescence spectroscopy are economical tools for tracing the supply, turnover and fate of dissolved organic matter (DOM). The colored and fluorescent fractions of DOM (CDOM and FDOM, respectively) are linked by the apparent fluorescence ...
Urban Johannes Wünsch   +2 more
doaj   +1 more source

Multi-Aspect Incremental Tensor Decomposition Based on Distributed In-Memory Big Data Systems

open access: yesJournal of Data and Information Science, 2020
We propose InParTen2, a multi-aspect parallel factor analysis three-dimensional tensor decomposition algorithm based on the Apache Spark framework. The proposed method reduces re-decomposition cost and can handle large tensors.
Yang Hye-Kyung, Yong Hwan-Seung
doaj   +1 more source

Recent Advances in Spectroscopy and Imaging Techniques for Nondestructive Detection of Meat Quality and Safety

open access: yesFood Science &Nutrition, Volume 13, Issue 12, December 2025.
A summary of the advanced techniques for meat quality and safety detection. ABSTRACT Meat is one of the most important foods in the human diet and is a major source of animal protein. It is essential to detect meat quality and safety for ensuring that high‐quality foods are delivered to consumers.
Yushan Jiang   +5 more
wiley   +1 more source

Hyperspectral Imaging: The Intelligent Eye to Uncover the Password of Plant Science

open access: yesModern Agriculture, Volume 3, Issue 2, December 2025.
Hyperspectral imaging (HSI) has emerged as a powerful non‐destructive technique for characterisation of the plant phenotype and physiological traits. The ongoing development of cost‐effective hardware, coupled with standardised acquisition protocols and open‐access spectral libraries, is accelerating its integration with multi‐omics approaches to ...
Jingyan Song   +17 more
wiley   +1 more source

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

open access: yesJournal 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   +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

open access: yesБюллетень 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   +6 more
doaj   +1 more source

Combined UV LED and Chlorine for Synergistic Drinking Water Disinfection and Assessment of Disinfection By‐Product Formation

open access: yesAWWA Water Science, Volume 7, Issue 6, November/December 2025.
ABSTRACT This study provides a comprehensive evaluation of the effectiveness of 280 nm UV LEDs in enhancing chlorine disinfection in natural water sources. The results of this work indicate sequential treatments (UV‐chlorine and chlorine‐UV) further enhanced the disinfection efficiency of T1 in natural waters, especially at higher UV doses, such as 40 ...
Jin Li   +8 more
wiley   +1 more source

A New Algorithm to Solve Parafac-Model

open access: yesBehaviormetrika, 1982
PARAFAC is a three mode factor analytic method developed by R.A. Harshman and is useful for data analysis. The fundamental idea says $${x_{ijk}} \approx \sum\limits_s^S {a_{is}}{b_{js}}{c_{ks}}$$ where xijk is given by measurement for i=1, 2…,I, j=1, 2,…, J, k ...
Chikio Hayashi, Fumi Hayashi
openaire   +1 more source

Source analysis of nitrate pollution in a typical tributary of the upper Yellow River using a combined approach of stable isotopes and DOM fluorescence characteristics

open access: yesRiver, Volume 4, Issue 4, Page 566-578, November 2025.
Abstract Identifying the sources and characteristics of water pollution is essential for the protection and management of water environments. Nitrate (NO3−) is a key pollutant affecting water quality in the Qingshui River, a typical semi‐arid tributary in the upper Yellow River basin.
Bin Xu   +12 more
wiley   +1 more source

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

open access: yesArctic 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   +3 more
doaj   +1 more source

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