Results 61 to 70 of about 473,004 (268)
Design and uncertainty analysis for a PVTt gas flow standard
Journal of Research of the National Institute of Standards and Technology, 2003 A new pressure, volume, temperature, and, time (PVTt) primary gas flow standard at the National Institute of Standards and Technology has an expanded uncertainty (k = 2) of between 0.02 % and 0.05 %. The standard spans the flow range of 1 L/min to 2000 L/min using two collection tanks and two diverter valve systems.
Wright, John D. +2 more
openaire +2 more sources
FEBS Letters, EarlyView.We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace +6 more
wiley +1 more source
The measurement and uncertainty of a calibration standard for the scanning electron microscope
Journal of Research of the National Institute of Standards and Technology, 1994 Standard Reference Material 484 is an artifact for calibrating the magnification scale of a Scanning Electron Microscope (SEM) within the range of 1000 × to 20000 ×. Seven issues, SRM-484, and SRM-484a to SRM-484f, have been certified between 1977 and 1992.
Fu, J. +2 more
openaire +2 more sources
FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Shipin gongye ke-jiObjective: To establish an evaluation method for the uncertainty of high-performance liquid chromatography in the determination of sucralose in soy sauce.
Tingting CUI +4 more
doaj +1 more source
Uncertainty and the Standard for Preliminary Relief
SSRN Electronic Journal, 2002 In deciding whether to issue a preliminary injunction, courts today focus on three factors: the likelihood that plaintiff will ultimately prevail on the merits; the harm defendant will suffer if the injunction is wrongly issued; and the harm plaintiff will suffer if the injunction is wrongly denied.
openaire +2 more sources
Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source
Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential
FEBS Letters, EarlyView.Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta +3 more
wiley +1 more source
Hangkong gongcheng jinzhan, 2018 The pulse signal is an important basic parameter in metrology support for aviation equipment, and the calibration device of oscilloscope calibrator is an important standard for measuring the rise time of pulse signal.
Li Xiaohui, Li Qiongwei, Dong Zhiming
doaj +1 more source