scholarly journals Vortex mixer

2015 ◽  
Vol 11 (10) ◽  
pp. 800-800 ◽  
Author(s):  
Iulia Georgescu
Keyword(s):  
Vortex Mixer

Effect of Vial shaking on Loading Time of Epirubicin into Drug-Eluting Bead

2015 ◽  
Vol 5 (3) ◽  
Author(s):  
Kenji Ikeda ◽  
Yusuke Kawamura ◽  
Masahiro Kobayashi ◽  
Taito Fukushima ◽  
Yushi Sorin ◽  
...  
Keyword(s):  
Antitumor Agent ◽  
Loading Rates ◽  
Vortex Mixer ◽  
Long Time ◽  
Group A ◽  
Drug Eluting ◽  
Large Hepatocellular Carcinoma ◽  
Group B ◽  
Time Required ◽  
Short Time

Background: Although DC Bead has been useful in treatment of multiple and large hepatocellular carcinoma, loading time of doxorubicin into the DC Bead takes a long time of 30-120 minutes. Epirubicin is also used as an antitumor agent together with DC Bead, but its loading efficiency was not sufficiently elucidated. Methods: To shorten loading time of epirubicin into DC Bead (100-300µm, 300-500µm, 500-700µm), we examined the following three methods after mixing the drug: (a) let stand in room temperature, (b) agitated for 30 seconds with Vortex mixer, and (c) sonicated for 30 seconds with ultrasonic cleaner. After loading of epirubicin by each method, supernatant concentration for epirubicin was assayed at 5, 10, 30, 60, and 120 minutes. Results: Epirubicin loading rates for small bead (100-300µm) at 5 minutes were 82.9 % in group a, 93.8% in group b, and 79.9 % in group c. Similarly, medium bead (300-500µm), 40.1% in group a, 65.7% in group b and 45.5% in group c, respectively. In large-sized bead (500-700µm), loaded rates of epirubicin were 38.8% in group a, 59.0% in group b and 48.0% in group c. Agitation of mixture of epirubicin and DC Bead with Vortex mixer significantly shortened the loading time, but sonication did not affect the time required. Microscopic examination did not lead to any morphological change of microspheres in all the methods. Conclusions: Short time of agitation with Vortex mixer reduced the necessary time for loading of epirubicin in every standard of DC Bead.

scholarly journals Insecticidal Effects of Vegetable Oil on Silverleaf Whitefly, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 414-414
Author(s):  
T.-X. Liu ◽  
P. A. Stansly
Keyword(s):  
Vegetable Oils ◽  
Tomato Plant ◽  
Age Distribution ◽  
Ionic Surfactant ◽  
Silverleaf Whitefly ◽  
Abaxial Side ◽  
Spray Tower ◽  
Magnetic Stirring ◽  
Vortex Mixer ◽  
Stirring Time

Abstract All but the top 3-4 fully expanded leaves were removed from 45-50 cm tomato plant with 7-9 leaves and 35 to 40 cm collard with 6-7 leaves. Plants were exposed for 72 h (Test 1) or 24 h (Test 2) to a greenhouse colony of silverleaf whitefly for oviposition. The plants were then incubated 10 d. Second instars predominated in both tests. The 3 vegetable oils labeled “A”, “B”, and “C” (Integrated Biocentrol Systems, Inc., Lawrenceburg, IN), 20 ml each, were measured into plastic vials with 5 ml of the non-ionic surfactant APSA 80 and mixed using a Vortex mixer for about 1 min. Dilutions of 0.5 and 1.0% were made by adding the correct amount of each mixture drop by drop to a 500 ml beaker filled with R.O. purified water while stirring on a magnetic stirring plate. The dilutions were stirred for an additional 2-3 min for a total stirring time of 5-10 minutes. All mixtures emulsified well. APSA 80 [0.04%(AI)] and Sunspray Ultra Fine Oil (Sun Refining & Marketing Co., Philadelphia, PA), were also tested and water was used the check. Leaves bearing an average of 120 whitefly nymphs (range: 70-179) were removed from the plant and placed abaxial side up at the bottom of a Potter Spray Tower. The tower was operated at 10 psi to deliver a volume of 3 ml. Treated leaves were placed, petiole down, in water-filled 20ml vials and incubated in an insectary 25 ± 2°C, 55-60%RH and a photoperiod of 14:10 (L:D) h for 5-7 days. Because of non-uniform age distribution in the first test, only dead 2nd instars and live 3rd and 4th instars were recorded. Pupae (dead or alive) were not recorded because they would have been 3rd or 4th instars when treated. For the second test, all dead and live whitefly nymphs were counted under a stereoscopic microscope.

Mixing Behavior of Continuously Taylor Vortex Mixer

2018 ◽  
Vol 2018 (0) ◽  
pp. GS4-4
Author(s):  
Shin Satou ◽  
Hiroto Hirano ◽  
Shinpei Wada
Keyword(s):  
Taylor Vortex ◽  
Mixing Behavior ◽  
Vortex Mixer

Vortex mixer for SCR-process in passenger cars

MTZ worldwide ◽  
2005 ◽  
Vol 66 (1) ◽  
pp. 19-21 ◽  
Author(s):  
Jürgen Grünwald ◽  
Thomas Sattelmayer ◽  
Sebastian Steinbach
Keyword(s):  
Passenger Cars ◽  
Vortex Mixer

Preparation of quantum dot-embedded polymeric nanoparticles using flash nanoprecipitation

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48399-48410 ◽  
Author(s):  
Yanjie Zhang ◽  
Aaron R. Clapp
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Efficient Method ◽  
Polymeric Nanoparticles ◽  
Impinging Jet ◽  
Amphiphilic Polymer ◽  
Polymer Micelles ◽  
Flash Nanoprecipitation ◽  
Vortex Mixer

We developed a unique and efficient method to encapsulate quantum dots within amphiphilic polymer micelles using the flash nanoprecipitation technique and various micromixers (multi-inlets vortex mixer, MIVM, and confined impinging-jet mixer, CIJM).

Effect of Detergents on Streptolysin S Precursor

1980 ◽  
Vol 29 (2) ◽  
pp. 306-310
Author(s):  
Gary B. Calandra
Keyword(s):  
Glass Beads ◽  
Tween 20 ◽  
Group A Streptococci ◽  
Streptolysin S ◽  
Brij 35 ◽  
Vortex Mixer ◽  
Maximum Activation ◽  
Group A ◽  
Tween 40 ◽  
No Activation

Group A streptococci which produce streptolysin S contain a cellular precursor to streptolysin S in the membranes and cytoplasm which is activatable by blending in a Vortex mixer with glass beads and ribonucleic acid (RNA)-core (RNA preparation from yeast). Although no activation of precursor occurred when it was mixed with detergents, it was activated when blended with glass beads and detergents such as Tergitol NP-40 and Brij 35. Maximum activation of precursor was achieved in 1 to 2% detergent, in pH 6.5 buffer, and after 8 min of blending. Detergents Tween 20, 40, 60, and 80, Brij 56, and Lubrol WX also activated precursor, but, of all the hemolysin preparations, those with Tween 40 or 60 or Lubrol WX were the most stable. The addition of RNA-core during or after blending of precursor with detergents enhanced the titer and stability of the hemolysin. This was due in part to the association of the hemolytic moiety with RNA-core. Activation of precursor in the membrane was better with a detergent, whereas that in the cytoplasm was better with RNA-core. Therefore, precursor from two different cellular locations can be differentiated by the effects of RNA-core and detergents on precursor titer.

Continuous Surface Strain Tuning for NiFe-Layered Double Hydroxides Using a Multi-inlet Vortex Mixer

2020 ◽  
Vol 59 (45) ◽  
pp. 19897-19906
Author(s):  
Shengting Wang ◽  
Xingwu Zhai ◽  
Yulin Shi ◽  
Long Chen ◽  
Yin Lv ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Surface Strain ◽  
Vortex Mixer ◽  
Continuous Surface ◽  
Double Hydroxides
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