نتایج جستجو برای: selectivity analysis

تعداد نتایج: 2862509  

2007
Hongrae Lee Raymond T. Ng Kyuseok Shim

There are many emerging database applications that require accurate selectivity estimation of approximate string matching queries. Edit distance is one of the most commonly used string similarity measures. In this paper, we study the problem of estimating selectivity of string matching with low edit distance. Our framework is based on extending q-grams with wildcards. Based on the concepts of r...

Journal: :Angewandte Chemie 2016
Anna Loiudice Peter Lobaccaro Esmail A Kamali Timothy Thao Brandon H Huang Joel W Ager Raffaella Buonsanti

Favoring the CO2 reduction reaction (CO2RR) over the hydrogen evolution reaction and controlling the selectivity towards multicarbon products are currently major scientific challenges in sustainable energy research. It is known that the morphology of the catalyst can modulate catalytic activity and selectivity, yet this remains a relatively underexplored area in electrochemical CO2 reduction. H...

Journal: :Biophysical chemistry 2006
Denis Bucher Simone Raugei Leonardo Guidoni Matteo Dal Peraro Ursula Rothlisberger Paolo Carloni Michael L Klein

The electronic structure of the selectivity filter of KcsA K(+) channel is investigated by density functional theory (DFT/BLYP) and QM/MM methods. The quantum part includes the selectivity filter, which is polarized by the electrostatic field of the environment treated with the Amber force field. The details of the electronic structure were investigated using the maximally localized Wannier fun...

Journal: :Biophysical journal 2013
Mengdie Xia Huihui Liu Yang Li Nieng Yan Haipeng Gong

Voltage-gated sodium (Nav) channels and their Na⁺/K⁺ selectivity are of great importance in the mammalian neuronal signaling. According to mutational analysis, the Na⁺/K⁺ selectivity in mammalian Nav channels is mainly determined by the Lys and Asp/Glu residues located at the constriction site within the selectivity filter. Despite successful molecular dynamics simulations conducted on the prok...

Journal: :Analytical chemistry 2014
Eric Bakker

The group of Egorov has recently proposed an elegant method to determine unbiased selectivity coefficients of ion-selective electrodes (Egorov et al. Anal. Chem. 2014, 86, 3693). Once the electrode is exposed to a solution containing only interfering ions, the time-dependent experimental selectivity coefficients are plotted as a function of the inverse fourth root of time and extrapolated to ze...

2014
APIRAK SAKUNPAK JIRAPORNCHAI SUKSAEREE CHAOWALIT MONTON PATHAMAPORN PATHOMPAK

Objective: The aim of this study was to develop and validate an image analysis method for quantitative analysis of barakol content in Senna siamea leaf extract. Methods: TLC-densitometric and TLC-image analysis methods were developed, validated, and used for quantitative analysis of Senna siamea leaf extract. The results obtained by these two different quantification methods were compared by pa...

2017
Feng Wang Shiyu Cao Ruxia Yan Zewei Wang Dan Wang Haifeng Yang

Surface-enhanced Raman spectroscopy (SERS) is a powerful technique for the discrimination, identification, and potential quantification of certain compounds/organisms. However, its real application is challenging due to the multiple interference from the complicated detection matrix. Therefore, selective/specific detection is crucial for the real application of SERS technique. We summarize in t...

Journal: :EURASIP J. Adv. Sig. Proc. 2007
Filipe C. C. Beltrao Diniz Iuri Kothe Sergio L. Netto Luiz W. P. Biscainho

This paper approaches, under a unified framework, several algorithms for the spectral analysis of musical signals. Such algorithms include the fast Fourier transform (FFT), the fast filter bank (FFB), the constant-Q transform (CQT), and the bounded-Q transform (BQT), previously known from the associated literature. Two new methods are then introduced, namely, the constant-Q fast filter bank (CQ...

2011
Chiara Verbano Maria Crema Karen Venturini

The company’s ability to draw on a range of external sources to meet their needs for innovation, has been termed ‘open innovation’ (OI). Very few empirical analyses have been conducted on Small and Medium Enterprises (SMEs) to the extent that they describe and understand the characteristics and implications of this new paradigm. The study's objective is to identify and characterize different mo...

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