scholarly journals Terahertz Absorption Characteristics of the Sodium Carboxymethyl Cellulose Colloid Based on Microfluidic Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Chenxin Ding ◽  
Bo Su ◽  
Guoyang Wang ◽  
Qinghao Meng ◽  
Jiahui Wang ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Carboxymethyl Cellulose ◽  
Chemical Substance ◽  
Sodium Carboxymethyl Cellulose ◽  
Depth Study ◽  
Terahertz Transmission ◽  
Cellulose Concentration ◽  
Electric Field Treatment

Sodium carboxymethyl cellulose is a type of macromolecular chemical substance that is widely used in the industry for food thickening. In this study, terahertz and microfluidic technologies were combined, and a microfluidic chip with a channel depth of 50 μm was fabricated to carry samples. The terahertz characteristics of the sodium carboxymethyl cellulose colloid were studied at different concentrations and applied electric fields. The obtained results showed that different concentrations of sodium carboxymethyl cellulose have different time-domain spectra; with an increase in concentration, the terahertz transmittance of sodium carboxymethyl cellulose decreased. Under the applied electric field treatment, the longer the electric field acting time is, the higher the terahertz transmission intensity is. This approach is a safe and reliable new method for the determination of sodium carboxymethyl cellulose concentration, which provides technical support for the in-depth study of sodium carboxymethyl cellulose.

Determination of the Internal Electric Field in the Electrooptic Active Layer of Multilayer Polymer Stacks

1997 ◽  
Vol 488 ◽  
Author(s):  
S. Grossmann ◽  
T. Weyrauch ◽  
W. Haase
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Time Dependent ◽  
Polymer Interfaces ◽  
Internal Electric Field ◽  
Inhomogeneous Distribution ◽  
Time Dependent Behaviour ◽  
Dependent Behaviour

AbstractWe report on a method to investigate the inhomogeneous distribution of an electric dc field in multilayer polymer stacks. In situ electroabsorption (EA) measurements are applied in order to estimate the local electric fields in double layer polymer films. The observed time dependent behaviour is compared with a model equivalent circuit. The results indicate that besides the relation of ohmic resistivities and capacities of the different polymer layers in the investigated systems also the influence of the electric properties of polymer/electrode and polymer/polymer interfaces must be considered.

Pulsed Electric Fields Versus Thermal Treatment: Equivalent Processes To Obtain Equally Acceptable Citrus Juices

2006 ◽  
Vol 69 (8) ◽  
pp. 2016-2018 ◽  
Author(s):  
E. SENTANDREU ◽  
L. CARBONELL ◽  
D. RODRIGO ◽  
J. V. CARBONELL
Keyword(s):  
Thermal Treatment ◽  
Electric Field ◽  
Electric Fields ◽  
Pulsed Electric Fields ◽  
Pectin Methylesterase ◽  
Pulsed Electric Field ◽  
Citrus Juices ◽  
Pulsed Electric Field Treatment ◽  
Electric Field Treatment

Pulsed electric field treatment has been claimed to produce more acceptable chilled citrus juices than those obtained by conventional thermal treatment. The pectin methylesterase activity and the acceptability of nine juices obtained from Clementine mandarins, Valencia oranges, and Ortanique fruits (hybrid of mandarin and orange), untreated, pasteurized (85°C for 10 s), and treated by pulsed electric fields (25 kV/cm for 330 μs), were evaluated. The treatments, selected to reach a similar level of pectin methylesterase inactivation, produced juices that did not differ in acceptability from each other for the three varieties and in all cases were less acceptable than the untreated juice.

scholarly journals Use of pulsed electric fields to induce breakage of glandular trichome cells in leaves of fresh patchouli (Pogostemon cablin Benth.): Specific energy input consumption

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Sukardi Sukardi ◽  
Sudjito Soeparman ◽  
Bambang Dwi Argo ◽  
Yudy Surya Irawan
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Specific Energy ◽  
Energy Input ◽  
Glandular Trichome ◽  
Specific Energy Input ◽  
Variable Electric Field ◽  
Pogostemon Cablin ◽  
Cell Changes ◽  
Electric Field Treatment

Research has been performed using a pulsed electric field (PEF) to damage plant cells to obtain bioactive compounds before extraction. However, research into the use of PEF to break down the glandular trichome (GT) cells of patchouli for essential oil extraction is still limited. The purpose of this study was to determine the specific energy input needed to break patchouli leaf GT cells by PEF treatment. Patchouli leaves were harvested at 7 months of age, then treated with PEF. GT cell changes were analyzed using scanning electron microscopy. The results show that treatment with variable frequencies caused GT cell wrinkling and treatments with a variable electric field caused GT cell rupture. Electric field treatment at E=133.33 V/cm and a PEF exposure time of 2 seconds or E=116.66 V/cm and 3 seconds of PEF exposure resulted in consistent rupture of GT cells. Energy consumption of 0.049 kJ/cm3 promoted GT cell wall shrinkage and consumption of 0.59 kJ/cm3 broke GT cell walls.

Determination of Trace Anions in Sodium Carboxymethyl Cellulose by Ion Chromatography

2020 ◽  
Vol 83 (5) ◽  
pp. 677-681
Author(s):  
Zhongping Huang ◽  
Chun Zhuge ◽  
Xuxin Dai ◽  
Huijun Liu ◽  
Yuanbin She
Keyword(s):  
Ion Chromatography ◽  
Carboxymethyl Cellulose ◽  
Sodium Carboxymethyl Cellulose

scholarly journals Sensor of high frequency electric fields intensity on the base of slot waveguides with electro-optic polymer filling

2020 ◽  
Vol 4 (4) ◽  
pp. 378-388
Author(s):  
Игорь Андреевич Гончаренко ◽  
Виталий Николаевич Рябцев ◽  
Александр Васильевич Ильюшонок ◽  
Олег Дмитриевич Навроцкий
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Optical Sensor ◽  
High Frequency ◽  
Method Of Lines ◽  
Application Field ◽  
Optical Polymer ◽  
Electro Optic ◽  
Slot Waveguides

Purpose. Development of the structure and operation principles of high frequency electric fields intensity optical sensor. Methods. Method of lines was used for calculation of propagation constants and mode electric fields distribution of strip waveguides with vertical and horizontal slots filled with electro-optical polymer SEO125. Findings. The structure and operation principles of high frequency electric fields intensity sensor on the base of slot waveguides with vertical and horizontal slots filled with electro-optical polymer are proposed. Sensor makes it possible measuring the variable electric fields with frequencies up to 10 MHz. The sensor sensitivity order is of 30 V/m. Application field of research. Determination of fire-dangerous and injurious factors of electric field during emergencies elimination.

scholarly journals Localization of intracellular proteins at acetylcholine receptor clusters induced by electric fields in Xenopus muscle cells

1989 ◽  
Vol 94 (1) ◽  
pp. 73-83
Author(s):  
M.W. Rochlin ◽  
H.B. Peng
Keyword(s):  
Electric Field ◽  
Acetylcholine Receptor ◽  
Electric Fields ◽  
Matrix Material ◽  
Muscle Cells ◽  
Ultrastructural Level ◽  
Anchoring Proteins ◽  
Intracellular Proteins ◽  
Receptor Clusters ◽  
Electric Field Treatment

Electric fields cause acetylcholine receptor (AChR) patches to form on the cathodal sides of cultured muscle cells. These patches are stable for several hours following cessation of an electric field treatment, indicating that the receptors are anchored to the cluster sites. Furthermore, at the ultrastructural level, AChR patches induced by electric fields are marked by an accumulation of extracellular matrix material and a sarcolemmal density. Thus, these AChR patches are similar to those induced by other stimuli, including nerve, polycation-coated beads, and the tissue culture substratum. Proteins that may be involved in anchoring AChRs have been colocalized with AChR patches induced by the latter three stimuli, but not at AChR patches induced by electric fields. In this study, we demonstrate that three putative anchoring proteins, 43K (K = 10(3) Mr) protein, 58K protein and talin, are associated with field-induced AChR patches. We also show that these proteins persist at field-induced AChR patches following removal of the field, indicating that they are stabilized at the AChR patch. Our data are consistent with the possibility that these proteins contribute to the stabilization of AChRs at patches induced by the electric field. Since 43K, 58K and talin are intracellular proteins, and therefore could not undergo field-induced lateral electrophoresis, our observations support the notion that the electric field triggers the formation of an AChR-stabilizing specialization.

scholarly journals Terahertz Characteristics of Magnetic Fluid Based on Microfluidic Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xinyuan Zhao ◽  
Guoyang Wang ◽  
Siyu Shao ◽  
Qinghao Meng ◽  
Jiahui Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Electric Fields ◽  
Field Intensity ◽  
Magnetic Fluid ◽  
Terahertz Technology ◽  
Terahertz Spectrum ◽  
Microfluidic Technology ◽  
Terahertz Transmission ◽  
The Magnetic Field

Magnetic fluid is a new functional material with both liquid fluidity and solid magnetism, which has important application value in medicine, biology, and so on. In this study, terahertz technology and microfluidic technology were combined to investigate the terahertz transmission characteristics of a magnetic fluid in different magnetic fields and different electric fields. In the external magnetic field, the intensity of the terahertz spectrum increased with an increase in the magnetic field intensity, and the response to the magnetic field in different directions was different. Under the applied electric field, the intensity of the terahertz spectrum decreased with an increase in the electric field intensity. This method is convenient for studying the terahertz characteristics of magnetic fluid and provides technical support for in-depth studies of magnetic fluid.

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