نتایج جستجو برای: gas purification

تعداد نتایج: 300267  

Journal: :Plant physiology 1989
J R Dunlap G Guinn

A simple procedure was developed for the partial purification of plant tissue samples to be analyzed simultaneously for indole-3-acetic acid (IAA) and abscisic acid (ABA). The procedure relies on removal of contaminants by filtration through nylon and partitioning into dichloromethane. This procedure successfully purified both IAA and ABA from muskmelon, cotton, and broccoli tissue. Twenty indi...

Journal: :Jurnal Pengembangan Energi Nuklir 2018

2009
Scott A. Wright Yogesh B. Gianchandani

We report a method for the selective chemisorption of oxygen and nitrogen in sealed cavities utilizing microdischarges between thin-film Ti electrodes. The method is used to remove contaminating air from both inert and organic gas environments, reducing the nitrogen and oxygen concentrations by factors of 50 and 16, respectively. A microchip-based optical emission spectroscopic sensor is used t...

2013
Ana C. Glavan Ramses V. Martinez Anand Bala Subramaniam Hyo Jae Yoon Rui M.D. Nunes Heiko Lange Martin M. Thuo George M. Whitesides

F) were purchased from Gelest Inc (Morrisville, PA). All chemicals were used as received without further purification. Paper (Gel Blot paper, Whatman#1, and Whatman#50) was purchased from GE Healthcare (NJ, USA) and used as received, without purification. The silanization reaction was conducted in a chamber with a volume of 0.01 m 3 at a temperature set at 95 °C. The silanizing reagent is trans...

Journal: :Kosmičeskaâ tehnika. Raketnoe vooruženie 2018

Journal: :Nigerian Journal of Technology 2021

This study presents the application of ternary phase diagrams to tropical almond biodiesel components separation and purification at two temperatures. The seed oil was extracted mechanically alkaline transesterified produce biodiesel. were characterized using standard methods. Tie lines binodal solubility curve data determined modified cloud point titration procedures. Gas chromatographic metho...

2007
N. Vyazmina D. Baranov A. Vyazmin

The influence of operating conditions to the effectiveness of extractive distillation process was investigated by using the method of gas chromatography. The experiment took place on an industrial vacuum plant of purification ethanol from impurities formed during fermentation. It is obtained that the concentration of different micro impurities at the selection zones depends on the temperature a...

2015
Guoping Gao Yan Jiao Yalong Jiao Fengxian Ma Liangzhi Kou Aijun Du

The development of low energy cost membranes to separate He from noble gas mixtures is highly desired. In this work, we studied He purification using recently experimentally realized, two-dimensional stanene (2D Sn) and decorated 2D Sn (SnH and SnF) honeycomb lattices by density functional theory calculations. To increase the permeability of noble gases through pristine 2D Sn at room temperatur...

Journal: :Plant physiology 1986
G Guinn D L Brummett R C Beier

A procedure was selected for the simultaneous extraction and purification of abscisic acid (ABA) and indoleacetic acid (IAA). Unnecessary steps were eliminated and an accumulation of aqueous phase was avoided. The superior performance of diethyl ether (compared to ethyl acetate) for bulk purification and the superior resolution provided by 250 millimeter columns packed with 5-micrometer spheric...

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