Results 41 to 50 of about 245,617 (365)

Methods for detection and enumeration of coliforms in drinking water: a review

open access: yesWater Supply, 2023
Ensuring the microbiological safety of drinking water is of paramount importance to protect public health. Coliform bacteria, including Escherichia coli, serve as key indicators of water contamination and the potential presence of harmful pathogens ...
Ashish Tambi, Urmila Brighu, A. B. Gupta
doaj   +1 more source

Improving Dispersion of Bacterial Endospores for Enumeration

open access: yesKONA Powder and Particle Journal, 2015
Precise enumeration of spores is crucial for accurate evaluation of spore survival in the presence of inactivating agents or extreme environmental conditions. Bacterial endospores tend to agglomerate, leading to low estimates of spore numbers.
Vijay B. Krishna   +4 more
doaj   +1 more source

Quantitative PCR Assays for the Strain-Specific Identification and Enumeration of Probiotic Strain Lacticaseibacillus rhamnosus X253

open access: yesFoods, 2022
Probiotics are universally recognized for their health benefits, despite the fact that their effects depend on the strain. Identification and enumeration of probiotic strains are required prior to evaluating their effectiveness.
Lei Zhao   +9 more
doaj   +1 more source

Enumerations of Universal Cycles for $k$-Permutations [PDF]

open access: yesarXiv, 2021
Universal cycle for $k$-permutations is a cyclic arrangement in which each $k$-permutation appears exactly once as $k$ consecutive elements. Enumeration problem of universal cycles for $k$-permutations is discussed and one new enumerating method is proposed in this paper. Accurate enumerating formulae are provided when $k=2,3$.
arxiv  

Use of Congo red-polysaccharide interactions in enumeration and characterization of cellulolytic bacteria from the bovine rumen

open access: yesApplied and Environmental Microbiology, 1982
The interaction of the direct dye Congo red with intact beta-D-glucans provides the basis for a rapid and sensitive assay system for bacterial strains possessing beta-(1 leads to 4),(1 leads to 3)-D-glucanohydrolase, beta-(1 leads to 4)-D ...
M. Ronald, '. Teather, P. Wood
semanticscholar   +1 more source

Enumeration of cospectral graphs [PDF]

open access: yesEuropean Journal of Combinatorics, 2004
AbstractWe have enumerated all graphs on at most 11 vertices and determined their spectra with respect to various matrices, such as the adjacency matrix and the Laplacian matrix. We have also counted the numbers for which there is at least one other graph with the same spectrum (a cospectral mate).
Haemers, W.H., Spence, E.
openaire   +5 more sources

Image Analysis Semi-Automatic System for Colony-Forming-Unit Counting

open access: yesBioengineering, 2022
Background: Accurate quantitative analysis of microorganisms is recognized as an essential tool for gauging safety and quality in microbiology settings in a wide range of fields.
Pedro Miguel Rodrigues   +2 more
doaj   +1 more source

A Hybrid Intelligence Approach for Circulating Tumor Cell Enumeration in Digital Pathology by Using CNN and Weak Annotations

open access: yesIEEE Access, 2023
Counting the number of Circulating Tumor Cells (CTCs) for cancer screenings is currently done by cytopathologists with a heavy time and energy cost. AI, especially deep learning, has shown great potential in medical imaging domains. The aim of this paper
Leihui Tong, Yuan Wan
doaj   +1 more source

Counting quadrant walks via Tutte's invariant method (extended abstract) [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
Extended abstract presented at the conference FPSAC 2016, Vancouver.
Olivier Bernardi   +2 more
doaj   +1 more source

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