Results 41 to 50 of about 72,257 (309)

Tracing the geographical origin of Argentinean lemon juices based on trace element profiles using advanced chemometric techniques [PDF]

open access: yes, 2016
This study examines the application of chemometric techniques associated with trace element concentrations for origin evaluation of lemon juice samples. Seventy-four lemon juice samples from three different provinces of Argentina were evaluated according
Gaiad, José Emilio   +4 more
core   +1 more source

Graph-based calibration transfer [PDF]

open access: yes, 2020
The problem of transferring calibrations from a primary to a secondary instrument, i.e. calibration transfer (CT), has been a matter of considerable research in chemometrics over the past decades. Current state-of-the-art (SoA) methods like (piecewise) direct standardization perform well when suitable transfer standards are available.
arxiv   +1 more source

Strigolactones shape the assembly of root-associated microbiota in response to phosphorus availability

open access: yesmSystems
Plants rely on strigolactones (SLs) to regulate their development and form symbiotic relationships with microbes as part of the adaptive phosphorus (P) efficiency strategies. However, the impact of SLs on root-associated microbial communities in response
Pubo Chen   +9 more
doaj   +1 more source

The Degrees of Freedom of Partial Least Squares Regression [PDF]

open access: yes, 2010
The derivation of statistical properties for Partial Least Squares regression can be a challenging task. The reason is that the construction of latent components from the predictor variables also depends on the response variable.
Akaike H.   +6 more
core   +6 more sources

Engineering an asymmetric rhodamine dye suitable for developing ratiometric fluorescent probe

open access: yesSmart Molecules, 2023
Fluorescent probes based on rhodamine skeleton are extensively used in biological imaging. However, the construction of ratiometric fluorescent probes based on the rhodamine skeleton without introducing additional fluorophores is still challenging ...
Feiyu Yang   +4 more
doaj   +1 more source

High-Performance Liquid Chromatography–Diode Array Detection Combined with Chemometrics for Simultaneous Quantitative Analysis of Five Active Constituents in a Chinese Medicine Formula Wen-Qing-Yin

open access: yesChemosensors, 2022
In this work, a simple analytical strategy combining high-performance liquid chromatography–diode array detection (HPLC-DAD) and the chemometric method was developed for the simultaneous quantification of 5-hydroxymethyl-2-furfural (HMF), paeoniflorin ...
Jun-Chen Chen   +5 more
doaj   +1 more source

An adapted version of the element-wise weighted total least squares method for applications in chemometrics

open access: yes, 2007
The Maximum Likelihood PCA (MLPCA) method has been devised in chemometrics as a generalization of the well-known PCA method in order to derive consistent estimators in the presence of errors with known error distribution.
Markovsky, Ivan   +2 more
core   +1 more source

Leveraging Design of Experiments to Unravel the Amplification Mechanism of Single‐Molecule Wide‐Field Biosensors

open access: yesAdvanced Materials Interfaces, EarlyView.
Detecting single molecules on large interfaces is challenging due to minimal perturbations on the sensing surface. Some biological systems achieve this feat using amplification mechanisms, but their molecular foundations remain unclear. To investigate, a Design of Experiments (DoE) approach examines how pH and ionic strength in conditioning solutions ...
Michele Catacchio   +9 more
wiley   +1 more source

Approximate Rank-Detecting Factorization of Low-Rank Tensors

open access: yes, 2012
We present an algorithm, AROFAC2, which detects the (CP-)rank of a degree 3 tensor and calculates its factorization into rank-one components. We provide generative conditions for the algorithm to work and demonstrate on both synthetic and real world data
Király, Franz J., Ziehe, Andreas
core   +1 more source

Laser‐Induced Plasma Effects on Bond Breaking in High‐Density Polyethylene Pyrolysis

open access: yesAdvanced Materials Interfaces, EarlyView.
This study introduces a novel application of Laser‐Induced Breakdown Spectroscopy (LIBS) for bond breaking in high‐density polyethylene (HDPE), an area previously unexplored in laser‐plastic interactions. For the first time, a numerical model has been developed to differentiate between photon‐induced and laser field‐induced plasma, demonstrating the ...
Rao Adeel Un Nabi   +5 more
wiley   +1 more source

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