scholarly journals Other Real-Time Movement

2021 ◽  
pp. 207-211
Author(s):  
Tomoko M. Nakanishi
Keyword(s):  
Growth Inhibition ◽  
Real Time ◽  
Chemical Change ◽  
Harmful Effect ◽  
Rice Root ◽  
Ion Concentration ◽  
Root Tip ◽  
Interesting Phenomenon ◽  
Root Movement ◽  
Time Movement

AbstractIn the case of root movement, a very interesting phenomenon was found using the Super-HARP camera, which enabled the visualization of root movement in the dark.Although the first data on plants show that the harmful effect is growth inhibition, the first effect of the toxicity was to stop the rotation movement of the roots before growth inhibition occurred.When there was a chemical change in the environment, although the circumnutation of the root tip ceased, the root was able to elongate, and it was interesting that after a while the root movement resumed. In the case of a rice root, one round of movement of the rice root tip showed a constant time of approximately 50 minutes. However, this movement ceased when Al ion was supplied. The time needed for resuming the movement of the root tip was dependent on the Al ion concentration. It is not known what triggers the resumption of the movement of the root tip.

scholarly journals Real-time detection of the nanoparticle induced phytotoxicity in rice root tip through the visible red emissions of Eu3+ ions

2018 ◽  
Vol 17 (4) ◽  
pp. 499-504 ◽  
Author(s):  
Peng Du ◽  
Yunfei Wu ◽  
Jae Su Yu
Keyword(s):  
Real Time ◽  
Rice Root ◽  
Root Tip ◽  
Rice Seedlings ◽  
Prepared Nanoparticles ◽  
Real Time Detection

The rice seedlings are grown at different conditions. Luminescent image of the prepared nanoparticles excited by 396 nm light is shown. The rice root tip is treated with 100 μM NaBiF4:Eu3+ nanoparticles at 4 days after germination.

Salt Stress-induced Programmed Cell Death in Rice Root Tip Cells

2007 ◽  
Vol 49 (4) ◽  
pp. 481-486 ◽  
Author(s):  
Jian-You Li ◽  
Ai-Liang Jiang ◽  
Wei Zhang
Keyword(s):  
Cell Death ◽  
Salt Stress ◽  
Programmed Cell Death ◽  
Rice Root ◽  
Root Tip ◽  
Tip Cells ◽  
Root Tip Cells

Integrated solid-state wearable sweat sensor system for sodium and potassium ion concentration detection

Sensor Review ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Haowei Zhang ◽  
Lili Sun ◽  
Chengli Song ◽  
Ying Liu ◽  
Xueting Xuan ◽  
...  
Keyword(s):  
Solid State ◽  
Real Time ◽  
Ion Concentration ◽  
Sensor System ◽  
Linear Potential ◽  
Sensor Systems ◽  
Electrode Arrays ◽  
Content Type ◽  
Sensing Applications ◽  
High Degree

Purpose Design, fabricate and evaluate all-solid-state wearable sensor systems that can monitor ion concentrations in human sweat to provide real time health analysis and disease diagnosis capabilities. Design/methodology/approach A human health monitoring system includes disposable customized flexible electrode array and a compact signal transmission-processing electronic unit. Findings Patterned rGO (reduced-graphene oxide) layers can replace traditional metal electrodes for the fabrication of free-standing all solid film sensors to provide improved flexibility, sensitivity, selectivity, and stability in ion concentration monitoring. Electrochemical measurements show the open circuit potential of current selective electrodes exhibit near Nernst responses versus Na+ and K+ ion concentration in sweat. These signals show great stability during a typical measurement period of 3 weeks. Sensor performances evaluated through real time measurements on human subjects show strong correlations between subject activity and sweating levels, confirming high degree of robustness, sensitivity, reliability and practicality of current sensor systems. Originality/value In improving flexibility, stability and interfacial coherency of chemical sensor arrays, rGO films have been the developed as a high-performance alternative to conventional electrode with significant cost and processing complexity reduction. rGO supported solid state electrode arrays have been found to have linear potential response versus ion concentration, suitable for electrochemical sensing applications. Current sweat sensor system has a high degree of integration, including electrode arrays, signal processing circuits, and data visualization interfaces.

Cytotoxicity Assessment of Gallium- and Indium-Based Nanoparticles Toward Human Bronchial Epithelial Cells Using an Impedance-Based Real-Time Cell Analyzer

2020 ◽  
Vol 39 (3) ◽  
pp. 218-231
Author(s):  
Chi H. Nguyen ◽  
Chao Zeng ◽  
Scott Boitano ◽  
Jim A. Field ◽  
Reyes Sierra-Alvarez
Keyword(s):  
Epithelial Cells ◽  
Growth Inhibition ◽  
Real Time ◽  
Metal Oxide Nanoparticles ◽  
Bronchial Epithelial Cells ◽  
Silicon Wafers ◽  
Multiple Time ◽  
High Electron ◽  
Human Bronchial Epithelial Cells ◽  
Bronchial Epithelial

The semiconductor manufacturing sector plans to introduce III/V film structures (eg, gallium arsenide (GaAs), indium arsenide (InAs) onto silicon wafers due to their high electron mobility and low power consumption. Aqueous solutions generated during chemical and mechanical planarization of silicon wafers can contain a mixture of metal oxide nanoparticles (NPs) and soluble indium, gallium, and arsenic. In this work, the cytotoxicity induced by Ga- and In-based NPs (GaAs, InAs, Ga2O3, In2O3) and soluble III-V salts on human bronchial epithelial cells (16HBE14o-) was evaluated using a cell impedance real-time cell analysis (RTCA) system. The RTCA system provided inhibition data at different concentrations for multiple time points, for example, GaAs (25 mg/L) caused 60% inhibition after 8 hours of exposure and 100% growth inhibition after 24 hours. Direct testing of As(III) and As(V) demonstrated significant cytotoxicity with 50% growth inhibition concentrations after 16-hour exposure (IC50) of 2.4 and 4.5 mg/L, respectively. Cell signaling with rapid rise and decrease in signal was unique to arsenic cytotoxicity, a precursor of strong cytotoxicity over the longer term. In contrast with arsenic, soluble gallium(III) and indium(III) were less toxic. Whereas the oxide NPs caused low cytotoxicity, the arsenide compounds were highly inhibitory (IC50 of GaAs and InAs = 6.2 and 68 mg/L, respectively). Dissolution experiments over 7 days revealed that arsenic was fully leached from GaAs NPs, whereas only 10% of the arsenic was leached out of InAs NPs. These results indicate that the cytotoxicity of GaAs and InAs NPs is largely due to the dissolution of toxic arsenic species.

Amyloid Growth, Inhibition, and Real-Time Enzymatic Degradation Revealed with Single Conical Nanopore

2018 ◽  
Vol 90 (21) ◽  
pp. 12900-12908 ◽  
Author(s):  
Nicoletta Giamblanco ◽  
Diego Coglitore ◽  
Alberto Gubbiotti ◽  
Tianji Ma ◽  
Emmanuel Balanzat ◽  
...  
Keyword(s):  
Growth Inhibition ◽  
Real Time ◽  
Enzymatic Degradation

A study of a real-time online monitoring system for the durability of concrete structures

2016 ◽  
Vol 63 (3) ◽  
pp. 184-189
Author(s):  
Mingming Xiao ◽  
Shilong Zhang ◽  
Yanbing Tang ◽  
Zhongmao Lin ◽  
Jiahong Chen
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Concrete Structures ◽  
Chloride Ion ◽  
Corrosion Current ◽  
Ion Concentration ◽  
Corrosion Monitoring ◽  
Content Type ◽  
System Data ◽  
Durability Of Concrete

Purpose This study aims to explore the effect of corrosion monitoring technology for ensuring concrete structure safety. Design/methodology/approach A new monitoring system scheme with unattended operation to evaluate the durability of concrete structures is presented, which includes four components, namely, a multi-function embedded sensor, a microprocessor data collecting module, a system data analysis and storage module, and a remote server module. Findings The system carries out monitoring of chloride ion concentration and pH in concrete, corrosion current density and of the self-corrosion potential of the reinforcing steel bar. Originality/value This system provides real-time, online, lossless monitoring for concrete structures.

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