Results 101 to 110 of about 2,705,124 (338)

Initial visual information determines endpoint precision for rapid pointing

Vision Research, 2006
We investigated how visual noise in the initial estimate of target location affects precision for rapid pointing. Visual localization thresholds (an error measure) rise systematically with eccentricity, doubling at eccentricities of a degree or less. Previous work, which we confirmed, has shown that the precision of pointing, measured by the standard ...
Ma-Wyatt, A., McKee, S.
openaire   +3 more sources

Deliberations and Evaluations of Approaches, Endpoints and Paradigms for Determining Zinc Dietary Recommendations [PDF]

The Journal of Nutrition, 1996
The work group considered past and future Recommended Dietary Allowances (RDAs) for zinc. Past RDAs were based in large part on metabolic balance data. Balance measurements are technically difficult and it is uncertain that they reflect true requirements. Therefore other methods should be used to determine requirements and the RDA. The best approach at
H H, Sandstead, J C, Smith
openaire   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Determination of the Acidity of Oils Using Paraformaldehyde as a Thermometric End-Point Indicator

Journal of the Brazilian Chemical Society, 2002
The determination of the acidity of oils by catalytic thermometric titrimetry using paraformaldehyde as the thermometric end-point indicator was investigated.
Carneiro Mário J. D., Feres Júnior Mário A., Godinho Oswaldo E. S.   +2 more
doaj  

Mass Measurement Using Energy Spectra in Three-body Decays

, 2015
In previous works we have demonstrated how the energy distribution of massless decay products in two body decays can be used to measure the mass of decaying particles.
Agashe, Kaustubh, Franceschini, Roberto, Kim, Doojin, Wardlow, Kyle   +3 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Time to deterioration of patient-reported outcome endpoints in cancer clinical trials: targeted literature review and best practice recommendations

Journal of Patient-Reported Outcomes
Background Time to deterioration (TTD) endpoints are often utilized in the analysis of patient-reported outcome (PRO) data in oncology clinical trials but different endpoint definitions and analysis frameworks exist that can impact result interpretation.
Kim Cocks, Bellinda L. King-Kallimanis, Joel Sims, Gill Worthy, Julia Stein, Lara Ayala–Nunes, Monika Achra, Zhanglin Lin Cui, Nalin Payakachat   +8 more
doaj   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Development and validation of an alternative titration method for the determination of sulfate ion in indinavir sulfate

Química Nova, 2005
A simple and rapid precipitation titration method was developed and validated to determine sulfate ion content in indinavir sulfate raw material.
Breno de Carvalho e Silva, Lígia Maria Moreira de Campos, Gerson Antônio Pianetti   +2 more
doaj   +1 more source

Mass measurements near the $r$-process path using the Canadian Penning Trap mass spectrometer

, 2012
The masses of 40 neutron-rich nuclides from Z = 51 to 64 were measured at an average precision of $\delta m/m= 10^{-7}$ using the Canadian Penning Trap mass spectrometer at Argonne National Laboratory. The measurements, of fission fragments from a $^{252}
A. Chaudhuri, A. F. Levand, B. J. Zabransky, D. Lascar, E. Sugarbaker, G. Li, G. Savard, I. F. Barchuk, J. A. Clark, J. Fallis, J. P. Greene, J. Van Schelt, K. S. Sharma, K.-L. Kratz, M. G. Sternberg, M. Shibata, M. W. Chase, S. Caldwell, T. Sun, U. Keyser   +19 more
core   +1 more source