Results 11 to 20 of about 15,266,194 (372)

The diagnostic value of the ultrasound gray scale ratio for different sizes of thyroid nodules. [PDF]

open access: yesCancer Med, 2019
At present, hypoechogenicity, as one of the clinically relevant features associated with suspicion of malignant thyroid disease, is affected by the variability of modules and the experience of sonographers, thus leading to unsatisfying results.
Chen X   +5 more
europepmc   +3 more sources

Relevance of Aβ42/40 Ratio for Detection of Alzheimer Disease Pathology in Clinical Routine: The PLMR Scale

open access: yesFrontiers in Aging Neuroscience, 2018
Background: Cerebrospinal fluid (CSF) biomarkers (Aβ peptides and tau proteins) improved the diagnosis of Alzheimer’s disease (AD) in research and clinical settings.
Sylvain Lehmann   +16 more
doaj   +2 more sources

Differential diagnosis value of the ultrasound gray scale ratio for papillary thyroid microcarcinomas and micronodular goiters. [PDF]

open access: yesQuant Imaging Med Surg, 2018
Background To investigate the differential diagnosis value of the ultrasound gray scale ratio (UGSR) for papillary thyroid microcarcinomas (PTMCs) and micronodular goiters (MNGs).
Han Z, Lei Z, Li M, Luo D, Ding J.
europepmc   +2 more sources

Micro‐Scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation [PDF]

open access: yesAdvances in Materials, 2023
The ability to significantly change the mechanical and wave propagation properties of a structure without rebuilding it is currently one of the main challenges in the field of mechanical metamaterials.
K. Dudek   +7 more
semanticscholar   +1 more source

Mitotic chromosomes scale to nuclear-cytoplasmic ratio and cell size in Xenopus

open access: yeseLife, 2023
During the rapid and reductive cleavage divisions of early embryogenesis, subcellular structures such as the nucleus and mitotic spindle scale to decreasing cell size.
Coral Y Zhou   +6 more
doaj   +1 more source

Determining drivers of phytoplankton carbon to chlorophyll ratio at Atlantic Basin scale

open access: yesFrontiers in Marine Science, 2023
We demonstrate the ability of flow cytometry to determine species specific cellular carbon and chlorophyll content in vivo by using laboratory cultures of phytoplankton encompassing a wide range of cell sizes.
Timothy Smyth   +6 more
doaj   +1 more source

The mass-to-charge ratio scale [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 1994
Increases in the capacity for accurately measuring the mass-to-charge ratio of specific gas-phase ions justify the reconsideration and standard definition of the gas-phase mass-to-charge ratio scale and the clearly denned connection of that scale to condensed phases.
Department of Chemistry, Florida State University, Tallahassee, Florida, USA ( host institution )   +5 more
openaire   +3 more sources

Study of Creating Functional Disorder Ratio Scale for Locomotor System Restrictions

open access: yesAdli Tıp Bülteni, 2021
Objective:The present study aims to emphasize the importance of evaluating locomotor system limitations in terms of functional impairment or loss in injury, traffic accident and occupational accident reports and to develop new scale evaluating percentage
Sedat Seviçin   +2 more
doaj   +1 more source

Sequential Probabilistic Ratio Test for the Scale Parameter of the P-Norm Distribution

open access: yesDiscrete Dynamics in Nature and Society, 2021
We consider a series of independent observations from a P-norm distribution with the position parameter μ and the scale parameter σ. We test the simple hypothesis H0:σ=σ1 versus H1: σ=σ2.
Huan Ren, Hongchang Hu, Zhen Zeng
doaj   +1 more source

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