Results 11 to 20 of about 3,970,126 (291)

Method development, validation, and impurity measurement of β-estradiol from radiolabeled [131I]β-estradiol using radio-high-performance liquid chromatography for radioligand of saturation binding assay

open access: yesJournal of Advanced Pharmaceutical Technology & Research, 2023
β-estradiol is an estrogen steroid hormone and acts as an estrogen receptor agonist. Radiolabeled β-estradiol is widely used as a radioligand for binding assays. In this present study, the synthesis of [131I]β-estradiol has been successfully carried out.
Isti Daruwati   +5 more
doaj   +1 more source

Simultaneous determination of Guaifenesin, codeine phosphate, phenylephrine hydrochloride, and sodium benzoate in syrup pharmaceutical form by RP-HPLC

open access: yesAl-Kitab Journal for Pure Sciences, 2023
This work describes the development of the RP-HPLC method for the simultaneous estimation of Guaifenesin, codeine phosphate, phenylephrine, and sodium benzoate.
Muthana S. Ali   +4 more
doaj   +1 more source

On the validation of pansharpening methods

open access: yesCoRR, 2021
Validation of the quality of pansharpening methods is a difficult task because the reference is not directly available. In the meantime, two main approaches have been established: validation in reduced resolution and original resolution. In the former approach it is still not clear how the data are to be processed to a lower resolution.
openaire   +2 more sources

Validation and Cross-Validation Methods for ASCAT

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
The advanced scatterometer (ASCAT) is a fan beam scatterometer carried on board the Metop series of satellites. Its primary objective is to measure ocean backscatter for the retrieval of ocean wind vectors. Two ASCAT instruments (ASCAT-A and ASCAT-B) are operational and are independently calibrated using a number of ground-based transponders. The first
Craig Anderson 0002   +3 more
openaire   +1 more source

Circulating choline and phosphocholine measurement by a hydrophilic interaction liquid chromatography–tandem mass spectrometry

open access: yesHeliyon, 2023
Background: Given the growing interest in studying the role of choline and phosphocholine in the development and progression of tumor pathology, in this study we describe the development and validation of a fast and robust method for the simultaneous ...
Giulia Guerra   +7 more
doaj   +1 more source

METAPHOR: Probability density estimation for machine learning based photometric redshifts [PDF]

open access: yes, 2016
We present METAPHOR (Machine-learning Estimation Tool for Accurate PHOtometric Redshifts), a method able to provide a reliable PDF for photometric galaxy redshifts estimated through empirical techniques.
Amaro, Valeria   +5 more
core   +4 more sources

Is Weinberg's Method Valid? [PDF]

open access: yesActa geneticae medicae et gemellologiae, 1974
Suppose that L like-sexed and U unlike-sexed twins have been observed. Weinberg's method estimates the numbers of DZ andMZ twins as DZ = 2U and MZ = L—U. This method is based on the assumptions that (1) the sex ratio in DZ twins is 1/2 and (2) the sexes of DZ twins are determined independently and with the same probability in all parents; in ...
openaire   +2 more sources

Two Ways to Achieve the Same Goal—Two Validated Quantitative NMR Strategies for a Low-Abundance Natural Product in Standardized Extracts: The Case of Hepatodamianol in Turnera diffusa

open access: yesMolecules, 2022
The quantification of low-abundance secondary metabolites in plant extracts is an analytical problem that can be addressed by different analytical platforms, the most common being those based on chromatographic methods coupled to a high-sensitivity ...
Aída Parra-Naranjo   +5 more
doaj   +1 more source

Approximate inference of the bandwidth in multivariate kernel density estimation [PDF]

open access: yes, 2011
Kernel density estimation is a popular and widely used non-parametric method for data-driven density estimation. Its appeal lies in its simplicity and ease of implementation, as well as its strong asymptotic results regarding its convergence to the true ...
Bishop   +41 more
core   +1 more source

Application of Contemporary Extraction Techniques for Elements and Minerals Recovery from Stinging Nettle Leaves

open access: yesApplied Sciences, 2020
Stinging nettle (Urtica dioica L.) is a perennial plant belonging to the Urticaceae family. Several studies have reported the presence of the different classes of chemical compounds, which expressed a beneficial effect on human health.
Saša Popov   +6 more
doaj   +1 more source

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