Results 101 to 110 of about 8,972,343 (398)

limit of detection

, 2014
Citation: 'limit of detection' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.L03540 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Trace element analysis by EPMA in geosciences: detection limit, precision and accuracy

, 2018
Use of the electron probe microanalyser (EPMA) for trace element analysis has increased over the last decade, mainly because of improved stability of spectrometers and the electron column when operated at high probe current; development of new large-area
V. Batanova, A. V. Sobolev, V. Magnin
semanticscholar   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Automated online preconcentration system for the determination of trace amounts of lead using Pb-selective resin and inductively coupled plasma-atomic emission spectrometry [PDF]

, 2006
An automated sequential-injection online preconcentration system was developed for the determination of lead by inductively coupled plasma - atomic emission spectrometry (ICP-AES). The preconcentration of lead was performed with a minicolumn containing a
A. Sabarudin, Economou A., N. Lenghor, S. Motomizu, Y. Furusho, Y. Liping   +5 more
core   +1 more source

Development of a highly sensitive colloidal gold semiquantitative method for the determination of difenoconazole residues in citrus

Frontiers in Nutrition
IntroductionDifenoconazole (DIFE) is a common pesticide used in citrus cultivation; excessive intake can cause neurological damage to the organism, and the existing colloidal gold immunochromatographic test strips cannot meet the requirements for the ...
Ruobing Wang, Min Gong, Yang Liu, Weiran Zhu, Kai Zhang, Yidi Zhao, Chen Yin, Yuan Liu, Jian Wang, Yuping Wan, Yuping Wan   +10 more
doaj   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Detection Limit for Optically Sensing Specific Protein Interactions in Free-solution

, 2017
Optical molecular sensing techniques are often limited by the refractive index change associated with the probed interactions. In this work, we present a closed form analytical model to estimate the magnitude of optical refractive index change arising ...
Sasikumar, Harish, Varma, Manoj M.
core   +1 more source

Improving the detection limit for on-chip photonic sensors based on subwavelength grating racetrack resonators.

Optics Express, 2017
Compared to the conventional strip waveguide microring resonators, subwavelength grating (SWG) waveguide microring resonators have better sensitivity and lower detection limit due to the enhanced photon-analyte interaction.
Lijun Huang, Hai Yan, Xiaochuan Xu, S. Chakravarty, N. Tang, Huiping Tian, Ray T. Chen   +6 more
semanticscholar   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

PCR-Independent Detection of Bacterial Species-Specific 16S rRNA at 10 fM by a Pore-Blockage Sensor. [PDF]

, 2016
A PCR-free, optics-free device is used for the detection of Escherichia coli (E. coli) 16S rRNA at 10 fM, which corresponds to ~100-1000 colony forming units/mL (CFU/mL) depending on cellular rRNA levels.
Banda, Anisha, Esfandiari, Leyla, Kocharyan, Gayane, Lorenzini, Michael, Monbouquette, Harold G, Schmidt, Jacob J, Wang, Siqi, Wang, Siqing   +7 more
core   +1 more source