Results 11 to 20 of about 4,536,505 (278)

Copper:caeruloplasmin ratio [PDF]

open access: yesJournal of Clinical Pathology, 2007
Investigation of copper status can be a diagnostic challenge. The non-caeruloplasmin-bound copper (NCC) has deficiencies; accordingly, the copper:caeruloplasmin ratio has been suggested as an alternative index of copper status. A reference interval for this index was derived.
Patrick J, Twomey   +4 more
openaire   +2 more sources

Hazard ratio [PDF]

open access: yesCroatian Medical Journal, 2019
A note on methods for analysis of time to event data and interpretation of hazard ratio.
Trkulja, Vladimir, Hrabač, Pero
openaire   +3 more sources

Universal Shapes? Analysis of the Shape of Antarctic Tafoni

open access: yesGeosciences, 2019
Using dimensional data from over 700 tafoni in Antarctica, this paper identifies how the dimensionless ratios of width/length (W/L) and depth/length (D/L) vary with tafoni length. The analysis suggests that these ratios do tend to converge to values that
Rob Inkpen, Kevin Hall
doaj   +1 more source

The role of financial analysis in ensuring economic security of agricultural enterprise [PDF]

open access: yesОмский научный вестник: Серия "Общество. История. Современность", 2022
Financial analysis is important for ensuring the economic security of an economic entity, since this aspect implements the protection of the financial interests of a commercial organization in the process of its life. As a result, it becomes necessary
E. V. Bannikova   +2 more
doaj   +1 more source

Ultrasound Characterization of Patellar Tendon in Non-Elite Sport Players with Painful Patellar Tendinopathy: Absolute Values or Relative Ratios? A Pilot Study

open access: yesDiagnostics, 2020
Imaging findings in patellar tendinopathy are questioned. The aim of this pilot study was to characterize ultrasound measures, by calculating ultrasound ratio and neovascularization of the patellar tendon in non-elite sport players with unilateral ...
José L. Arias-Buría   +6 more
doaj   +1 more source

Sex ratios [PDF]

open access: yesHeredity, 2002
Sex ratio theory attempts to explain variation at all levels (species, population, individual, brood) in the proportion of offspring that are male (the sex ratio). In many cases this work has been extremely successful, providing qualitative and even quantitative explanations of sex ratio variation.
West, Stuart A   +2 more
openaire   +6 more sources

What’s the Risk: Differentiating Risk Ratios, Odds Ratios, and Hazard Ratios? [PDF]

open access: yesCureus, 2020
Risk ratios, odds ratios, and hazard ratios are three common, but often misused, statistical measures in clinical research. In this paper, the authors dissect what each of these terms define, and provide examples from the medical literature to illustrate each of these statistical measures.
George, Andrew   +2 more
openaire   +2 more sources

Astrometric mass ratios for three spectroscopic binaries [PDF]

open access: yes, 2013
The orbits of five single-lined spectroscopic binaries have recently been determined. We now use astrometric measurements that were collected with the Hipparcos satellite to constrain the systems' mass ratios and secondary masses.
Fekel, F. C., Sahlmann, J.
core   +3 more sources

Enantiomer fractions instead of enantiomer ratios [PDF]

open access: yes, 2000
The use of enantiomer ratios (ERs) to indicate the relative amounts of a pair of enantiomers in a sample has some disadvantages. Enantiomer fractions (EFs) are proposed as all alternative expression to eliminate the difficulties.
Boer, J. de   +3 more
core   +3 more sources

Enfermera del ámbito de la geriatría de Barcelona. Situación socioeconómica, laboral y percepción de su rol

open access: yesGerokomos, 2021
RESUMEN Objetivo: Determinar y describir la situación laboral de las enfermeras del ámbito de la geriatría de la provincia de Barcelona, así como su percepción.
Ester López Luna   +7 more
doaj   +1 more source

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