Removal of broken lead in the extraction process using the FlexCath steerable sheath; a new technique

2015 ◽  
Vol 43 (1) ◽  
pp. 120-120
Author(s):  
Mehmet Emin Kalkan
Keyword(s):  
Extraction Process ◽  
New Technique ◽  
A New Technique ◽  
Steerable Sheath

scholarly journals Organic Acids and Polyphenols Determination in Polish Wines by Ultrasound-Assisted Solvent Extraction of Porous Membrane-Packed Liquid Samples

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4376 ◽  
Author(s):  
Robles ◽  
Fabjanowicz ◽  
Płotka-Wasylka ◽  
Konieczka
Keyword(s):  
Solvent Extraction ◽  
Organic Acids ◽  
Extraction Process ◽  
Porous Membrane ◽  
New Technique ◽  
Extraction Temperature ◽  
Extraction Solvent ◽  
Liquid Samples ◽  
Ultrasound Assisted ◽  
A New Technique

In the near future, Poland is going to have more and more favorable conditions for viticulture. Organic acids and polyphenols are among the most commonly analyzed compounds due to their beneficial properties for human health and their importance in the winemaking process. In this work, a new technique involving ultrasound-assisted solvent extraction of porous membrane-packed liquid samples (UASE-PMLS) was for the first time described and applied for real samples. The methodology based on UASE-PMLS for organic acids and polyphenols in wine samples was optimized and validated. Using the new technique coupled to GC–MS, organic acids and polyphenols were evaluated in Polish wine samples. Extraction solvent, extraction temperature, derivatization time and sample pH were optimized. Chemometric tools were used for data treatment. Good linearity was obtained for the concentration ranges evaluated with r values between 0.9852 and 0.9993. All parameters of method validation (intra- and inter-day precision and matrix effect) were over 80% with coefficient of variation (CV) up to 17%. Recovery was between (92.0 ± 8.5)% and (113 ± 16)%. Finally, green assessment was evaluated using Analytical Eco-Scale and Green Analytical Procedure Index (GAPI). The UASE-PMLS is characterized by many advantages, e.g., the extraction process is fast and easy coupled to GC–MS. Regarding other extraction techniques, the amount of used solvent is minimum, and no waste is generated. Therefore, it is an environmentally friendly technique.

A new technique for the mapping of oxygen tension on the brain surface

2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S543-S543
Author(s):  
Satoshi Kimura ◽  
Keigo Matsumoto ◽  
Yoshio Imahori ◽  
Katsuyoshi Mineura ◽  
Toshiyuki Itoh
Keyword(s):  
Oxygen Tension ◽  
New Technique ◽  
Brain Surface ◽  
A New Technique ◽  
The Brain

A new technique to visualize alveolar dynamics in a rabbit model

2009 ◽  
Vol 56 (S 01) ◽  
Author(s):  
J Bickenbach ◽  
R Rossaint ◽  
R Autschbach ◽  
R Dembinski
Keyword(s):  
Rabbit Model ◽  
New Technique ◽  
A New Technique
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