scholarly journals DEA Modelling Effectiveness of Building Envelopes

2021 ◽  
Vol 1203 (3) ◽  
pp. 032005
Author(s):  
V V Jaroslav Žák ◽  
Kateřina Žáková

Abstract Today, insulated building envelopes must not only meet thermal-technical, mechanical, and economic requirements but must also be environmentally friendly. These requirements are often contradictory, and it is not clear what the effective option is for a particular case. The aim of the paper is to compare twenty different variants of building envelopes, not only in terms of thermal-technical properties but also in terms of environmental parameters and time and financial demands. The result of the paper is the determination of effective variants by a suitable mathematical method with consideration of all the above-mentioned influences.

2018 ◽  
Vol 242 ◽  
pp. 475-480 ◽  
Author(s):  
Augusto A. Vieira ◽  
Sergiane S. Caldas ◽  
Ana Laura Venquiaruti Escarrone ◽  
Jean Lucas de Oliveira Arias ◽  
Ednei Gilberto Primel

2016 ◽  
Vol 99 (6) ◽  
pp. 1533-1536 ◽  
Author(s):  
Jéssica Sayuri Hisano Natori ◽  
Eliane Gandolpho Tótoli ◽  
Hérida Regina Nunes Salgado

Abstract Norfloxacin is a broad-spectrum antimicrobial agent, widely used in humans and animals for the treatment of urinary tract infections. It is a second-generation fluoroquinolone. Several analytical methods to analyze norfloxacin have been described in the literature. However, most of them are complex and require the use of large amounts of organic solvents. This paper describes the development and validation of a green analytical method for the determination of norfloxacin in raw material by FTIR spectrophotometry. This method does not require the use of organic solvents, minimizing waste generation in the process and its environmental impacts. The development of methods that promote the reduction, prevention, or elimination of waste generation has become highly attractive to the pharmaceutical industry because of the growing demand from civil society and government authorities for environmentally friendly products and services. The FTIR spectrophotometry method was validated according to International Conference on Harmonization guidelines, showing adequate linearity (r = 0.9936), precision, accuracy, and robustness. This validated method can be used as an environmentally friendly alternative for the quantification of norfloxacin in raw material in QC routine analysis.


2006 ◽  
Vol 1108 (2) ◽  
pp. 287-288 ◽  
Author(s):  
Francesc A. Esteve-Turrillas ◽  
Sergio Armenta ◽  
Javier Moros ◽  
Salvador Garrigues ◽  
Agustín Pastor ◽  
...  

2018 ◽  
Vol 10 (1) ◽  
pp. 20
Author(s):  
Dan BADEA

This research aims to analyse the determination of rugby game results, as a consequence of territorial dominance or ball possession, by the teams participating in the 2015 Rugby World Cup. The objectives of our scientific approach were to record the variables linked to possession and territorial dominance in the rugby games and to process and interpret the results. In this applicative research, 48 matches were analysed, tracking total territorial dominance and sequential territorial dominance in the last 10 minutes of the game, as well as total possession and sequential possession in the last 10 minutes of the game. The research methods used are: scientific documentation, observation, measurement, statistical and mathematical method, graphical method. The results obtained from data processing and interpretation are contradictory. Thus, we have results displayed accordingly, when the team with total and sequential territorial dominance and superior total and sequential possession wins the game, but also when the team with total and sequential territorial dominance and superior total and sequential possession loses the game. We have results when the team with total territorial dominance and superior total possession wins the game, which is normal, but also results when the team with territorial dominance only in the last 10 minutes and superior possession only in the last 10 minutes wins the game. We might consider that these results are not a first, that they represent the exception, but what the research emphasises are the proportions between the results considered normal and those contradictory, which may generate questions and answers about the competition strategy.


2019 ◽  
Vol 16 (2) ◽  
pp. 190-202
Author(s):  
I. Y. Parnikoza ◽  
N. Y. Miryuta ◽  
V. Y. Ivanets ◽  
E. O. Dykyi

The purpose of our work has been to determine the indicator of complex adaptability — the United Quality Latent Index of Adaptability (UQLIA) for the experimental populations of Deschampsia antarctica É. Desv. and study the contribution to it of some environmental factors such as the near soil surface temperature and organogens content. Materials and methods. The determination of UQLIA was based on a pairwise comparison of the differences between investigated parameters of populations by mathematical regression techniques. The soil surface temperature was measured by loggers installed near plants in each locus during April 2017 – April 2018. Results and conclusions. Temperature fluctuations were described during December 2017 – February 2018 for twelve experimental populations of D. antarctica and one control fragment of moss turf subformation from Galindez Island. Significant variations in average daily near surface temperature were observed during the study period between populations, especially in December and January. The UQLIA of D. antarctica for this season was calculated on the basis of the projective cover, biometric indices of generative plants and the content of protective and reserve proteins in seeds for the eleven populations. The values of the United Soil Surface Temperature Influence Index (UTII) for the season summer months and the United Organogens Content in Soil Influence Index (UOCSII) have been calculated for the individual parameters of D. antarctica plants adaptability. The reliable contribution of UTII to ULIA has been shown for December and January, at the moment of the greatest variation of soil surface temperature. UOCSII provided a reliable contribution to the ULIA only in the amount of UTII. Keywords: Deschampsia antarctica, United Quality Latent Index of Adaptability (UQLIA), contribution of soil surface temperature and organogens content to complex adaptability.


2018 ◽  
Vol 231 ◽  
pp. 01012
Author(s):  
Joanna Kobus ◽  
Lech Kwiatkowski ◽  
Rafał Lutze

The work is aimed at determining the corrosivity of atmosphere in the vicinity of roads, taking into account the characteristics of local emission sources, including traffic intensity of vehicles along with climatic and exploitation factors. Determination of the corrosivity of atmosphere was carried out according to the procedures described in PN EN ISO standards. Samples for testing were made of low carbon steel DC05, zinc and hot dip galvanized steel. Samples were assembled at 19 sites in the close vicinity of roads and highways near the measurement points of vehicle traffic intensity. The mass loss of exposed samples was the basis for determination the atmosphere corrosivity at each of 19 test sites. Regarding steel, the corrosivity category of C4 was observed at 8/19 sites. Corrosion losses outside roads are 2-4 times lower and ranged within the categories of C2 and C3. Zinc corrosion losses classified to category C4 occurred at 2/19 stations. In the remaining ones they corresponded to category C3. In areas outside of roads, zinc corrosion losses are about 20-100% lower (C2). The first attempts to model the dependence of operating and environmental parameters on zinc and zinc coating corrosion losses indicate significant correlation between zinc and zinc coating corrosion losses as a function.


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