Results 11 to 20 of about 39,346 (163)

The Chemometric Evaluation of the Factors Influencing Cloud Point Extraction for Fluoroquinolones. [PDF]

open access: yesPharmaceutics, 2023
This study aimed to analyze the factors that impact the cloud point extraction of ciprofloxacin, levofloxacin, and moxifloxacin. The following independent variables were analyzed: Triton X-114 concentration, NaCl concentration, pH, and incubation temperature. The dependent variable studied was recovery. A central composite design model was used.
Michałowska A, Kupczyk O, Czyrski A.
europepmc   +4 more sources

Cloud point extraction in flow-based systems

open access: yesReviews in Analytical Chemistry, 2016
Cloud point extraction is a green alternative for separation and preconcentration, whose advantages are magnified by coupling with flow analysis. This results in fast extractions, with improved precision and lower reagent consumption and waste generation.
Melchert Wanessa R., Rocha Fábio R.P.
doaj   +2 more sources

Cloud point extraction coupled with back extraction: a green methodology in analytical chemistry. [PDF]

open access: yesForensic Sci Res, 2019
Recently, cloud point extraction (CPE) coupled with back extraction (BE) has been suggested as a promising alternative to liquid-liquid extraction. In CPE, non-ionic surfactants in aqueous solutions form micelles and the solution becomes turbid when heated to the cloud point temperature.
Kori S.
europepmc   +5 more sources

Micelle-mediated separation and cloud-point extraction

open access: yesTrAC - Trends in Analytical Chemistry, 2005
We present contemporary developments in the field of surfactants and micellar systems together with their applications in analysis, with the aim of highlighting some of the most important aspects of this area of research. We pay particular attention to speciation through cloud-point extraction (CPE), as well as to the differentiation of metallic ...
Dimosthenis Giokas   +2 more
exaly   +3 more sources

Cloud Point Extraction for Electroanalysis: Anodic Stripping Voltammetry of Cadmium. [PDF]

open access: yesAnal Chem, 2015
Cloud point extraction (CPE) is a well-established technique for the preconcentration of hydrophobic species from water without the use of organic solvents. Subsequent analysis is then typically performed via atomic absorption spectroscopy (AAS), UV-vis spectroscopy, or high performance liquid chromatography (HPLC).
Rusinek CA   +3 more
europepmc   +4 more sources

POINT CLOUD SLICING-BASED EXTRACTION OF INDOOR COMPONENTS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Indoor point cloud data is easy to obtain and contains a large amount of data, but there is no connectivity, no structural attributes, and no semantic information between point clouds. It is very difficult to extract interior components.
J. Zhao   +13 more
doaj   +1 more source

Power-Line Extraction Method for UAV Point Cloud Based on Region Growing Algorithm

open access: yes南方能源建设, 2023
[Introduction] Since the power line has the characteristics of long transmission distance and a complex spatial environment, the UAV LiDAR point cloud technology can completely and efficiently obtain the geometric information of the power line and its ...
Xingyi LI, Wei WU, Zhiyao ZHAO
doaj   +1 more source

Panoramic rendering-based polygon extraction from indoor mobile LiDAR data [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
In this paper, we propose a method for panoramic point-cloud rendering-based polygon extraction from indoor mobile LiDAR data. Our aim was to improve region-based point-cloud clustering in modeling after point-cloud registration.
M. Nakagawa   +4 more
doaj   +1 more source

Semantic Segmentation Model for Transmission Tower Point Cloud Based on Improved PointNet++

open access: yesZhongguo dianli, 2023
Aiming at the existing problem that the point cloud extraction accuracy of transmission lines is not high and cannot meet the needs of autonomous and refined inspection by unmanned aerial vehicles, an improved PointNet++ semantic segmentation method for ...
Zheng HUANG   +4 more
doaj   +1 more source

EFFECT OF KEYFRAMES EXTRACTION FROM THERMAL INFRARED VIDEO STREAM TO GENERATE DENSE POINT CLOUD OF THE BUILDING'S FACADE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Keyframes extraction is required and effective for the 3D reconstruction of objects from a thermal video sequence to increase geometric accuracy, reduce the volume of aerial triangulation calculations, and generate the dense point cloud. The primary goal
S. Motayyeb   +4 more
doaj   +1 more source

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