scholarly journals Suitable Experimental Design for Determination of Auxin Polar Transport in Space Using a Spacecraft.

2000 ◽  
Vol 14 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Toru Shimazu ◽  
Kensuke Miyamoto ◽  
Takayuki Hoson ◽  
Seiichiro Kamisaka ◽  
Junichi Ueda
Keyword(s):  
Experimental Design ◽  
Polar Transport ◽  
Auxin Polar Transport

Statistics and parallaxes

1978 ◽  
Vol 48 ◽  
pp. 7-29
Author(s):  
T. E. Lutz
Keyword(s):  
Experimental Design ◽  
Statistical Methods ◽  
Review Paper ◽  
Systematic Errors ◽  
Past Experience ◽  
Random Errors ◽  
Trigonometric Parallaxes ◽  
Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

Respirometry for determination of the influents SS-concentration

1996 ◽  
Vol 33 (1) ◽  
pp. 311-323 ◽  
Author(s):  
A. Witteborg ◽  
A. van der Last ◽  
R. Hamming ◽  
I. Hemmers
Keyword(s):  
Experimental Design ◽  
Activated Sludge ◽  
Substrate Concentration ◽  
Full Scale ◽  
Activated Sludge Process ◽  
Respiration Rates ◽  
On Line ◽  
Large Measurement ◽  
Set Up

A method is presented for determining influent readily biodegradable substrate concentration (SS). The method is based on three different respiration rates, which can be measured with a continuous respiration meter which is operated in a cyclic way. Within the respiration meter nitrification is inhibited through the addition of ATU. Simulations were used to develop the respirometry set-up and decide upon the experimental design. The method was tested as part of a large measurement programme executed at a full-scale plant. The proposed respirometry set-up has been shown to be suitable for a semi-on-line determination of an influent SS which is fully based on the IAWQ #1 vision of the activated sludge process. The YH and the KS play a major role in the principle, and should be measured directly from the process.

Optimization of Solid-phase Extraction by Experimental Design Methodology for Determination of Lead Ions Using Graphene Modified Nano-sheets as a Novel Sorbent

2014 ◽  
Vol 10 (4) ◽  
pp. 512-521 ◽  
Author(s):  
Omid Sayar ◽  
Forouzan Aboufazeli ◽  
Hamid Zhad ◽  
Omid Sadeghi ◽  
Mohammad Karimi ◽  
...  
Keyword(s):  
Experimental Design ◽  
Solid Phase Extraction ◽  
Design Methodology ◽  
Solid Phase ◽  
Lead Ions ◽  
Phase Extraction ◽  
Experimental Design Methodology

Optimum HPLC Conditions for Determination of Dibucaine HCL, Fluocortolone Pivalate and Fluocortolone Caproate by Using Experimental Design

2018 ◽  
Vol 15 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Bürge Aşçı ◽  
Mesut Koç
Keyword(s):  
Experimental Design ◽  
Flow Rate ◽  
Mobile Phase ◽  
High Performance ◽  
Limit Of Detection ◽  
Pharmaceutical Preparations ◽  
Acid Mixture ◽  
Solution Stability ◽  
Uv Detector

Introduction:This paper presents the development and validation of a novel, fast, sensitive and accurate high performance liquid chromatography (HPLC) method for the simultaneous quantitative determination of dibucaine HCl, fluocortolone pivalate and fluocortolone caproate in pharmaceutical preparations.Experiment:Development of the chromatographic method was based on an experimental design approach. A five-level-three-factor central composite design requiring 20 experiments in this optimization study was performed in order to evaluate the effects of three independent variances including mobile phase ratio, flow rate and amount of acid in the mobile phase.Conclusion:The optimum composition for mobile phase was found as a methanol:water:acetic acid mixture at 71.6 : 26.4 : 2 (v/v/v) ratio and optimum separation was acquired by isocratic elution with a flow rate of 1.3 mL/min. The analytes were detected using a UV detector at 240 nm. The developed method was validated in terms of linearity, precision, accuracy, limit of detection/quantitation and solution stability and successfully applied to the determination of dibucaine HCl, fluocortolone pivalate and fluocortolone caproate in pharmaceutical topical formulations such as suppositories and ointments.

scholarly journals Auxin polar transport is essential for the development of zygote and embryo in Nicotiana tabacum L. and correlated with ABP1 and PM H+-ATPase activities

2010 ◽  
Vol 61 (6) ◽  
pp. 1853-1867 ◽  
Author(s):  
Dan Chen ◽  
Yujun Ren ◽  
Yingtian Deng ◽  
Jie Zhao
Keyword(s):  
Nicotiana Tabacum ◽  
Polar Transport ◽  
Nicotiana Tabacum L ◽  
Auxin Polar Transport

Optimization by experimental design of headspace sorptive extraction and solid-phase microextraction for the determination of terpenes in spices

2019 ◽  
Vol 12 (12) ◽  
pp. 2764-2776 ◽  
Author(s):  
Zélie Triaux ◽  
Hugues Petitjean ◽  
Eric Marchioni ◽  
Damien Steyer ◽  
Christophe Marcic
Keyword(s):  
Experimental Design ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Sorptive Extraction

Simultaneous determination of streptomycin and oxytetracycline in agricultural antimicrobials by CZE after an experimental design

2007 ◽  
Vol 43 (2) ◽  
pp. 450-456 ◽  
Author(s):  
Patrícia Penido Maia ◽  
Jaime Amaya-Farfán ◽  
Susanne Rath ◽  
Felix Guillermo Reyes Reyes
Keyword(s):  
Experimental Design ◽  
Simultaneous Determination

Development and Validation of a LC Method for the Determination of Pramipexole Using an Experimental Design

2006 ◽  
Vol 64 (1-2) ◽  
pp. 95-100 ◽  
Author(s):  
G. Srinubabu ◽  
K. Jaganbabu ◽  
B. Sudharani ◽  
K. Venugopal ◽  
G. Girizasankar ◽  
...  
Keyword(s):  
Experimental Design ◽  
Development And Validation

Optimizationvia experimental design of an SPE-HPLC-UV-fluorescence method for the determination of valsartan and its metabolite in human plasma samples

2006 ◽  
Vol 29 (15) ◽  
pp. 2265-2283 ◽  
Author(s):  
Gorka Iriarte ◽  
Nerea Ferreirós ◽  
Izaskun Ibarrondo ◽  
Rosa Maria Alonso ◽  
Miren Itxaso Maguregi ◽  
...  
Keyword(s):  
Experimental Design ◽  
Human Plasma ◽  
Fluorescence Method ◽  
Plasma Samples ◽  
Uv Fluorescence ◽  
Human Plasma Samples
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