Intracellular potential change of Tradescantia virginiana L. leaf in response to CO2 stress

1993 ◽  
Vol 32 (2) ◽  
pp. 133-143 ◽  
Author(s):  
Mikako Saito ◽  
Tomoo Homma ◽  
Yasuyuki Nemoto ◽  
Hideaki Matsuoka
Keyword(s):  
Potential Change ◽  
Tradescantia Virginiana ◽  
Intracellular Potential

scholarly journals Potentiometric Response of Solid-State Sensors Based on Ferric Phosphate for Iron(III) Determination

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1612
Author(s):  
Andrea Paut ◽  
Ante Prkić ◽  
Ivana Mitar ◽  
Perica Bošković ◽  
Dražan Jozić ◽  
...  
Keyword(s):  
Silver Sulfide ◽  
Potential Change ◽  
Linear Potential ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Best Response ◽  
Body Design ◽  
Long Lifetime ◽  
First Time

A novel ion-selective electrode with membranes based on iron(III) phosphate and silver sulfide integrated into a completely new electrode body design has been developed for the determination of iron(III) cations. The best response characteristics with linear potential change were found in the iron(III) concentration range from 3.97× 10−5 to 10−2 mol L−1. The detection limit was found to be 2.41× 10−5 mol L−1 with a slope of –20.53 ± 0.63 and regression coefficient of 0.9925, while the quantification limit was 3.97× 10−5 M. The potential change per concentration decade ranged from –13.59 ± 0.54 to –20.53 ± 1.56 for Electrode Body 1 (EB1) and from –17.28 ± 1.04 to –24 ± 1.87 for Electrode Body 2 (EB2), which is presented for the first time in this work. The prepared electrode has a long lifetime and the ability to detect changes in the concentration of iron cations within 20 s. Membrane M1 showed high recoveries in the determination of iron cations in iron(III) standard solutions (98.2–101.2%) as well as in two different pharmaceuticals (98.6–106.5%). This proves that this type of sensor is applicable in the determination of ferric cations in unknown samples, and the fact that all sensor parts are completely manufactured in our laboratory proves the simplicity of the method.

Direct turgor pressure measurements in individual leaf cells of Tradescantia virginiana

Planta ◽  
1980 ◽  
Vol 149 (5) ◽  
pp. 445-453 ◽  
Author(s):  
U. Zimmermann ◽  
D. H�sken ◽  
E.-D. Schulze
Keyword(s):  
Turgor Pressure ◽  
Pressure Measurements ◽  
Tradescantia Virginiana ◽  
Individual Leaf

Slow potential change in human brain related to level of motivation.

1967 ◽  
Vol 63 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Charles S. Rebert ◽  
Dale W. McAdam ◽  
John R. Knott
Keyword(s):  
Human Brain ◽  
Potential Change ◽  
Slow Potential ◽  
Level Of Motivation

Origin of surface potential change during ferroelectric switching in epitaxial PbTiO3 thin films studied by scanning force microscopy

2009 ◽  
Vol 94 (3) ◽  
pp. 032907 ◽  
Author(s):  
Yunseok Kim ◽  
Changdeuck Bae ◽  
Kyunghee Ryu ◽  
Hyoungsoo Ko ◽  
Yong Kwan Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Potential ◽  
Scanning Force Microscopy ◽  
Potential Change ◽  
Force Microscopy ◽  
Scanning Force ◽  
Ferroelectric Switching

scholarly journals Evoked membrane potential change in rat optic nerve fiber: Computer simulation

2007 ◽  
Vol 23 (6) ◽  
pp. 348-356 ◽  
Author(s):  
Vincent Cazenave-Loustalet ◽  
Qing-Li Qiao ◽  
Li-Ming Li ◽  
Qiu-Shi Ren
Keyword(s):  
Computer Simulation ◽  
Membrane Potential ◽  
Optic Nerve ◽  
Nerve Fiber ◽  
Potential Change ◽  
Membrane Potential Change ◽  
Optic Nerve Fiber

scholarly journals Deriving Coronary Artery Calcium Scores (CACS) from CT-Coronary Angiography (CTCA): a potential change to UK NICE guidelines

2013 ◽  
Vol 34 (suppl 1) ◽  
pp. P2937-P2937
Author(s):  
C. W. Pavitt ◽  
S. Zielke ◽  
R. Ray ◽  
A. C. Lindsay ◽  
S. Padley ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Coronary Artery Calcium ◽  
Ct Coronary Angiography ◽  
Potential Change ◽  
Nice Guidelines

scholarly journals Detecting Redox Potentials Using Porous Boron Nitride/ATP-DNA Aptamer/Methylene Blue Biosensor to Monitor Microbial Activities

Micromachines ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 83
Author(s):  
Kai Guo ◽  
Zirui Song ◽  
Gaoxing Wang ◽  
Chengchun Tang
Keyword(s):  
Methylene Blue ◽  
Microbial Community ◽  
Boron Nitride ◽  
Redox Potential ◽  
Microbial Activity ◽  
Potential Change ◽  
Dna Aptamer ◽  
Redox Potentials ◽  
Microplate Reader

Microbial activity has gained attention because of its impact on the environment and the quality of people’s lives. Most of today’s methods, which include genome sequencing and electrochemistry, are costly and difficult to manage. Our group proposed a method using the redox potential change to detect microbial activity, which is rooted in the concept that metabolic activity can change the redox potential of a microbial community. The redox potential change was captured by a biosensor consisting of porous boron nitride, ATP-DNA aptamer, and methylene blue as the fluorophore. This assembly can switch on or off when there is a redox potential change, and this change leads to a fluorescence change that can be examined using a multipurpose microplate reader. The results show that this biosensor can detect microbial community changes when its composition is changed or toxic metals are ingested.

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