Formation of droplet interface bilayers in a Teflon tube

The behaviour of a thin film of an organic solvent on the walls of the extraction coil in a continuous liquid-liquid extraction flow system was studied using a computer-controlled fast-recording on-tube photometric detection system (approx. 3 ms time resolution). A single-loop injector was employed to introduce precise, reproducible volumes (Sr < 2%) of one phase into the continuous stream of the other as a segmented volume standard. The film thickness Df, ranging from 1 to 20 μm for a 0.7 mm teflon tube, was calculated from the segment lengthening at a different chloroform flow rates and was found to obey a polynominal dependence on the linear flow rate, df = f(uα), where α < 1.

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Cryogenic Tests on a Teflon-Tube Heat Exchanger

Advances in Cryogenic Engineering ◽

10.1007/978-1-4757-0516-4_59 ◽

1995 ◽

pp. 574-581

Author(s):

R. S. Thurston ◽

K. D. Williamson ◽

J. C. Bronson

Keyword(s):

Heat Exchanger ◽

Tube Heat Exchanger ◽

Teflon Tube

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Solvent extraction–sequential injection without segmentation and phase separation based on the wetting film formed on a Teflon tube wall

The Analyst ◽

10.1039/an9962100601 ◽

1996 ◽

Vol 121 (5) ◽

pp. 601-606 ◽

Cited By ~ 20

Author(s):

Yongyi Luo ◽

Rashed Al-Othman ◽

Jaromir Ruzicka ◽

Gary D. Christian

Keyword(s):

Phase Separation ◽

Solvent Extraction ◽

Tube Wall ◽

Sequential Injection ◽

Teflon Tube ◽

Wetting Film

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Spectrophotometric Determination of Antimony in Steels by Flow Injection Analysis Using a Teflon Tube Concentration Method

Tetsu-to-Hagane ◽

10.2355/tetsutohagane1955.89.9_920 ◽

2003 ◽

Vol 89 (9) ◽

pp. 920-926 ◽

Cited By ~ 4

Author(s):

Kunihiro WATANABE ◽

Takashi OSAWA ◽

Masayuki ITAGAKI

Keyword(s):

Spectrophotometric Determination ◽

Flow Injection ◽

Flow Injection Analysis ◽

Concentration Method ◽

Teflon Tube

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Miniaturized Continuous-Flow Digital PCR for Clinical-Level Serum Sample Based on the 3D Microfluidics and CMOS Imaging Device

Sensors ◽

10.3390/s20092492 ◽

2020 ◽

Vol 20 (9) ◽

pp. 2492

Author(s):

Bin Li ◽

Yuanming Li ◽

Andreas Manz ◽

Wenming Wu

Keyword(s):

Continuous Flow ◽

Pcr Amplification ◽

Complementary Metal Oxide Semiconductor ◽

Digital Pcr ◽

Oxide Semiconductor ◽

Serum Samples ◽

Imaging Device ◽

Loop Area ◽

Teflon Tube ◽

3D Microfluidics

In recent years, the development of polymerase chain reaction (PCR) technology has focused on digital PCR, which depends on the microfluidics. Based on continuous-flow microfluidic technology, this paper designed a miniaturized digital PCR amplification system, and greatly reduced the area required for microdroplet generation and reaction. The core rod. made of polydimethylsiloxane (PDMS), was combined with the Teflon tube to form 3D microfluidics, which requires only one heating source to form the temperature difference required for gene amplification. Only two 34 g needles can form and transmit micro-droplets in a 4-fold tapered Teflon tube, which is the simplest method to generate digital PCR droplets as far as we know, which allows the microdroplet generation device to be free from dependence on expensive chips. A complementary metal oxide semiconductor (CMOS) camera was used as a detection tool to obtain fluorescence video for the entire loop area or a specified loop area. In addition, we developed a homebrew for automatic image acquisition and processing to realize the function of digital PCR. This technique realizes the analysis of clinical serum samples of hepatitis B virus (HBV) and obtained the same results as real-time quantitative PCR. This system has greatly reduced the size and cost of the entire system, while maintaining a stable response.

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Cyclodialysis with Teflon Tube Implants

American Journal of Ophthalmology ◽

10.1016/0002-9394(69)94584-x ◽

1969 ◽

Vol 68 (5) ◽

pp. 879-883 ◽

Cited By ~ 6

Author(s):

Gerald Pinnas ◽

Milton Boniuk

Keyword(s):

Teflon Tube

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The adsorption of metal ions to the inner surface of a Teflon tube and its inhibition effect for FIA.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.50.509 ◽

2001 ◽

Vol 50 (7) ◽

pp. 509-513 ◽

Cited By ~ 7

Author(s):

Kunihiro WATANABE ◽

Takuya OKADA ◽

Arkin IBURAIM ◽

Masayuki ITAGAKI

Keyword(s):

Metal Ions ◽

Inhibition Effect ◽

Adsorption Of Metal Ions ◽

Inner Surface ◽

Teflon Tube

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Near-Infrared Spectroscopy for Monitoring Wafer Etchant Solution Using a Teflon Tube

Applied Spectroscopy ◽

10.1366/0003702054411724 ◽

2005 ◽

Vol 59 (7) ◽

pp. 952-955 ◽

Cited By ~ 11

Author(s):

Youngbok Lee ◽

Sanghee Nah ◽

Hankyu Namkung ◽

Hoeil Chung

Keyword(s):

Infrared Spectroscopy ◽

Near Infrared Spectroscopy ◽

Near Infrared ◽

Teflon Tube

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Analysis of Metal Contents in Portland Type V and MTA-Based Cements

The Scientific World JOURNAL ◽

10.1155/2014/983728 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 5

Author(s):

Maura Cristiane Gonçales Orçati Dorileo ◽

Matheus Coelho Bandeca ◽

Fábio Luis Miranda Pedro ◽

Luiz Evaristo Ricci Volpato ◽

Orlando Aguirre Guedes ◽

...

Keyword(s):

Nitric Acid ◽

Hydrochloric Acid ◽

Absorption Spectrometry ◽

Distilled Water ◽

Quantification Limit ◽

Metal Contents ◽

Teflon Tube ◽

Level Of Significance ◽

Type V ◽

Concentration Levels

The aim of this study was to determine, by Atomic Absorption Spectrometry (AAS), the concentration levels of 11 metals in Type V gray and structural white PC, ProRoot MTA, and MTA Bio. Samples, containing one gram of each tested cement, were prepared and transferred to a 100 mL Teflon tube with a mixture of 7.0 mL of nitric acid and 21 mL of hydrochloric acid. After the reaction, the mixture was filtered and then volumed to 50 mL of distilled water. For each metal, specific patterns were determined from universal standards. Arsenic quantification was performed by hydride generator. The analysis was performed five times and the data were statistically analyzed at 5% level of significance. Only the cadmium presented concentration levels of values lower than the quantification limit of the device. The AAS analysis showed increased levels of calcium, nickel, and zinc in structural white PC. Type V PC presented the greatest concentration levels of arsenic, chromium, copper, iron, lead, and manganese(P<0.05). Bismuth was found in all cements, and the lowest concentration levels were observed in Portland cements, while the highest were observed in ProRoot MTA. Both PC and MTA-based cements showed evidence of metals inclusion.

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