scholarly journals Generalized Regression Estimator Improved the Accuracy Rate of Estimated Dialysis Accesses Stenotic Condition on In-Vitro Arteriovenous Graft Experimental Model

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 10381-10391 ◽  
Author(s):  
Wei-Ling Chen ◽  
Chung-Dann Kan ◽  
Chia-Hung Lin ◽  
Yi-Chen Mai
Keyword(s):  
Experimental Model ◽  
Arteriovenous Graft ◽  
Regression Estimator ◽  
Accuracy Rate ◽  
Generalized Regression ◽  
Generalized Regression Estimator

A three-phase sampling extension of the generalized regression estimator with partially exhaustive information

2014 ◽  
Vol 44 (4) ◽  
pp. 383-388 ◽  
Author(s):  
Daniel Mandallaz
Keyword(s):  
Computing Time ◽  
Auxiliary Information ◽  
Large Data ◽  
Second Phase ◽  
Regression Estimator ◽  
Large Sample ◽  
Three Phase ◽  
Phase Sampling ◽  
Generalized Regression ◽  
Generalized Regression Estimator

We consider three-phase sampling schemes in which one component of the auxiliary information is known in the very large sample of the so-called null phase and the second component is available only in the large sample of the first phase, whereas the second phase provides the terrestrial inventory data. We extend to three-phase sampling the generalized regression estimator that applies when the null phase is exhaustive, for global and local estimation, and derive its asymptotic design-based variance. The new three-phase regression estimator is particularly useful for reducing substantially the computing time required to treat exhaustively very large data sets generated by modern remote sensing technology such as LiDAR.

Hepato- and Nephroprotective Effects of the Polyphenol Concentrate From Cabernet Sauvignon Grape Varieties Cultivated in Kazakhstan in the Experimental Model Of CCL4-Induced Toxicity

2017 ◽  
Vol 9 (03) ◽  
Author(s):  
Nurgozhin T. ◽  
Sergazy S. H. ◽  
Adilgozhina G. ◽  
Gulyayev A. ◽  
Shulgau Z. ◽  
...  
Keyword(s):  
Carbon Tetrachloride ◽  
Experimental Model ◽  
Lethal Dose ◽  
Radical Scavenging ◽  
Cabernet Sauvignon ◽  
Intragastric Administration ◽  
Liver And Kidney ◽  
Antioxidant Stress

Objective:This study investigates the hepatoprotective effect and the antioxidant role of polyphenol concentrate in the experimental model of carbon tetrachloride (CCl4) induced toxicity. Methods: Antioxidant activity of Cabernet Sauvignon grape polyphenol were evaluated by radical scavenging of 1,1-diphenyl-2-picryl hydrazyl radical (DPPH), 2,2’-azinobis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS.+). In addition, the effects of polyphenol concentrate on the survival of Wistar rats in the toxicity model, was also investigated. The polyphenol concentrate was administered for 5 five days prior to injection of carbon tetrachloride in a sub-lethal dose of 300 mg/kg of animal body weight in order to perform histological examinations of the liver and kidney, and detect the levels of AST, ALT and bilirubin. Results: Administration of polyphenol concentrate increased animal survival in the experimental model. Moreover, the intragastric administration of polyphenol concentrate prior to the initiation of the experimental model of toxicity, which was caused by a sub-lethal CCl4 dose, reduced morphological injuries in the liver and kidney, decreased the AST and ALT levels of the blood serum. Discussion and conclusion: Our data demonstrate that polyphenol concentrate possesses an antioxidant potential both in vitro and in vivo by reducing antioxidant stress that was caused by CCl4 administration into rats.

The optimal ablation setting for a local impedance guided catheter in an in vitro experimental model.

2021 ◽  
Author(s):  
Daisuke Kawano ◽  
Hitoshi Mori ◽  
Ritsushi Kato ◽  
Kenta Tsutsui ◽  
Yoshifumi Ikeda ◽  
...  
Keyword(s):  
Experimental Model
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