Ready Biodegradability Test in Seawater: A New Methodological Approach

1995 ◽  
Vol 31 (2) ◽  
pp. 142-148 ◽  
Author(s):  
R. Courtes ◽  
A. Bahlaoui ◽  
A. Rambaud ◽  
F. Deschamps ◽  
E. Sunde ◽  
...  
Keyword(s):  
Methodological Approach ◽  
Ready Biodegradability ◽  
Ready Biodegradability Test ◽  
Biodegradability Test

Trimeprazine is enantioselectively degraded by an activated sludge in ready biodegradability test conditions

2018 ◽  
Vol 141 ◽  
pp. 57-64 ◽  
Author(s):  
Laura Escuder-Gilabert ◽  
Yolanda Martín-Biosca ◽  
Mireia Perez-Baeza ◽  
Salvador Sagrado ◽  
María José Medina-Hernández
Keyword(s):  
Activated Sludge ◽  
Test Conditions ◽  
Ready Biodegradability ◽  
Ready Biodegradability Test ◽  
Biodegradability Test

Well-Established Biodegradation Tests Used Biogenously Evolved Carbon Dioxide as an Analytical Parameter to Determine the Ultimate Biodegradability of Metalworking Fluids Measured by the Change of Absorption Solution Conductivity

2014 ◽  
Vol 881-883 ◽  
pp. 497-502
Author(s):  
Kristina Gerulova
Keyword(s):  
Standardized Tests ◽  
Main Parameter ◽  
Conductivity Measurement ◽  
The Other ◽  
Metalworking Fluids ◽  
Metalworking Fluid ◽  
Ready Biodegradability ◽  
Analytical Parameter ◽  
Solution Conductivity ◽  
Biodegradability Test

Nowadays, there exist a few standardized tests in poor soluble substances ready biodegradability measurement. There are possibilities in evaluate the degradation by the O2 consumption or by CO2 releasing. Tests for O2 consumption are very stringent in keep the constant temperature because of the pressure which is the main parameter in O2 consumption calculating. On the other hand CO2 releasing test are complicated and discontinue because of the measuring by the titration methods. In present there is a possibility to measure CO2 produced by microbial activity during the substance degradation by the gaseous sensors. We were realized preliminary studies in continual measuring of evolved CO2 in biodegradability test of metalworking fluid Syntilo 81 BF by the conductivity measurement of absorption solution of barium hydroxide as it was described in [3,5].

Of Frames and Cultures - A Cross-Cultural Comparison of TV Newscasts

2006 ◽  
Vol 18 (4) ◽  
pp. 160-173 ◽  
Author(s):  
Maria Senokozlieva ◽  
Oliver Fischer ◽  
Gary Bente ◽  
Nicole Krämer
Keyword(s):  
Content Analysis ◽  
Arab World ◽  
Methodological Approach ◽  
Cross Cultural ◽  
Cultural Comparison ◽  
Explorative Study ◽  
Cross Cultural Comparison ◽  
Tv News ◽  
The Usa ◽  
The Relationship

Abstract. TV news are essentially cultural phenomena. Previous research suggests that the often-overlooked formal and implicit characteristics of newscasts may be systematically related to culture-specific characteristics. Investigating these characteristics by means of a frame-by-frame content analysis is identified as a particularly promising methodological approach. To examine the relationship between culture and selected formal characteristics of newscasts, we present an explorative study that compares material from the USA, the Arab world, and Germany. Results indicate that there are many significant differences, some of which are in line with expectations derived from cultural specifics. Specifically, we argue that the number of persons presented as well as the context in which they are presented can be interpreted as indicators of Individualism/Collectivism. The conclusions underline the validity of the chosen methodological approach, but also demonstrate the need for more comprehensive and theory-driven category schemes.

A novel methodological approach to systematically analyse pandemic influenza response programs within health systems

2010 ◽  
Vol 72 (08/09) ◽  
Author(s):  
A Ahmad ◽  
R Krumkamp ◽  
S Mounier-Jack ◽  
R Reintjes ◽  
R Coker
Keyword(s):  
Health Systems ◽  
Pandemic Influenza ◽  
Methodological Approach

Some statistical and CI models to predict chaotic high-frequency financial data

2020 ◽  
Vol 39 (5) ◽  
pp. 6419-6430
Author(s):  
Dusan Marcek
Keyword(s):  
Time Series Data ◽  
Moving Average ◽  
Methodological Approach ◽  
Back Propagation ◽  
Large Data ◽  
Series Data ◽  
Data Set ◽  
Training Time ◽  
Optimal Population ◽  
Forecast Time

To forecast time series data, two methodological frameworks of statistical and computational intelligence modelling are considered. The statistical methodological approach is based on the theory of invertible ARIMA (Auto-Regressive Integrated Moving Average) models with Maximum Likelihood (ML) estimating method. As a competitive tool to statistical forecasting models, we use the popular classic neural network (NN) of perceptron type. To train NN, the Back-Propagation (BP) algorithm and heuristics like genetic and micro-genetic algorithm (GA and MGA) are implemented on the large data set. A comparative analysis of selected learning methods is performed and evaluated. From performed experiments we find that the optimal population size will likely be 20 with the lowest training time from all NN trained by the evolutionary algorithms, while the prediction accuracy level is lesser, but still acceptable by managers.

Meet fractal curves with 1C:MathKit

2020 ◽  
pp. 38-48
Author(s):  
O. M. Korchazhkina
Keyword(s):  
Methodological Approach ◽  
Fractal Curve ◽  
Iterative Processes ◽  
Geometric Figures ◽  
Modern Natural ◽  
Geometric Objects ◽  
Ict Tools ◽  
Subject Areas ◽  
The Subject ◽  
And Mathematics

The article presents a methodological approach to studying iterative processes in the school course of geometry, by the example of constructing a Koch snowflake fractal curve and calculating a few characteristics of it. The interactive creative environment 1C:MathKit is chosen to visualize the method discussed. By performing repetitive constructions and algebraic calculations using ICT tools, students acquire a steady skill of work with geometric objects of various levels of complexity, comprehend the possibilities of mathematical interpretation of iterative processes in practice, and learn how to understand the dialectical unity between finite and infinite parameters of flat geometric figures. When students are getting familiar with such contradictory concepts and categories, that replenishes their experience of worldview comprehension of the subject areas they study through the concept of “big ideas”. The latter allows them to take a fresh look at the processes in the world around. The article is a matter of interest to schoolteachers of computer science and mathematics, as well as university scholars who teach the course “Concepts of modern natural sciences”.

Sign in / Sign up

Export Citation Format

Share Document