scholarly journals Behavior of capacitive humidity sensors in monitoring the drying of concrete walls

2019 ◽  
Vol 282 ◽  
pp. 02053
Author(s):  
Tuomas Raunima ◽  
Eero Tuominen ◽  
Juha Vinha

This research examines the behavior of capacitive humidity sensors in monitoring the drying of concrete walls in continuous measurements in laboratory conditions. Tests are carried out using continuous measuring of moisture with different capacitive sensors in concrete structures varied with three different types of thermal insulation materials. Sensors are sealed in plastic tubes that were preinstalled into the casting molds. Three borehole measurements are carried out as reference during the research. Results show differences in performance between the examined humidity sensors from two different manufacturers. The main difference is related to stability as sensors from the other manufacturer prove to be more prone to error. The study affirms that measuring humidity in concrete is challenging even when using high-quality humidity sensors.

Author(s):  
Muhammad Arslan ◽  
Muhammad Asif Saleem ◽  
Maria Yaqub ◽  
Muhammad Saleem Khan

The focus of this research work was to analyse the effect of different types of curing oncompressive strength of concrete structures. For this purpose, 54 test specimens of cylindrical shape wereprepared. These specimens were cured with different methods and were tested on different age days toanalyse the effect of curing on compressive strength. Test specimens cured with conventional water curingmethod gives the highest results as compared to the other adopted methods.


2017 ◽  
Vol 10 (1) ◽  
pp. 41-44
Author(s):  
A Rahman ◽  
MA Haque ◽  
AK Mia ◽  
MS Islam ◽  
R Alam

The ultimate goal of this study was to investigate the level of meat misbranding and adulteration from slaughterhouses, which is an indirect criminal activity according to the food law. In this study 87 slaughterhouses were selected from 30 markets in Dhaka municipal area purposively to collect data through a well-structured questionnaire. Results showed that a significant percentages of illegal activities done in slaughterhouses. Low weight given during the selling operations, mixing low quality species of meat with high quality one, low quality part of meat through hiding consumer concerns, water mixing before or after slaughter, un-hygienic practices and the level were 56.32%; 49.43%; 42.53%; 72.41% and 85.18% respectively. On the other hand, about 8.04% slaughterhouse used different types of non-meat chemical ingredients illegally to their product. Among four observed chemical sodium phosphate was used in 2.3% of slaughterhouses, nitrate & nitrite was used in 1.15% of slaughterhouses, sodium chloride was also used in 2.3% of slaughterhouses and cleaners & sanitizers was used in 3.45% of slaughterhouses. About 91.96% of slaughterhouses did not use those non meat ingredients chemical.J. Environ. Sci. & Natural Resources, 10(1): 41-44 2017


1999 ◽  
Vol 5 (4) ◽  
pp. 359-386
Author(s):  
R. Wolfseher

Abstract Restoration of concrete structures implies repair of damage and a surface treatment which prevents future damage of the load bearing structure in case it is renewed in time. Depending on the performance of the protective surface treatment the substrate has to be prepared more or less carefully. On the one hand it is worth while to apply an inexpensive solution appropriate for a given situation and on the other hand to predict the optimal time for a necessary intervention. Different types of surface treatments can be attributed to discrete stages of expenses. In this contribution it is shown that based on a reliable analysis of the actual state, the cheapest type of restoration can be found in an unambiguous way and executed at the right moment. At the end examples are given. The necessary investment can be optimized. Finally, it will be underlined that money spent for quality control during the construction process can be considered to be an investment yielding 17% interest.


Author(s):  
N. K. Manakova ◽  
◽  
O. V. Suvorova ◽  

The paper presents the results of the study of feasibility of obtaining high-quality foamed thermal insulation materials based on a silicate matrix with addition of dolomite. It has been found out that the preliminary activation of a suspension based on a silica-containing component at a temperature of 90°C for 5-7 minutes allows accelerating the coagulation of silica fume and the synthesis of sodium silicates. Optimal foaming conditions for the charge frothing are 650-700°C for 25 minutes. There have been obtained foam silicates with a relatively uniform finely porous structure and stable physical and technical properties with density 0.38-0.48 g/cm³, strength up to 3 MPa, thermal conductivity 0.048-0.054 W/(m·K).


Babel ◽  
2017 ◽  
Vol 63 (6) ◽  
pp. 861-889
Author(s):  
Jeffrey Killman

Abstract Vocabulary is often considered one of the most difficult aspects of translating legal texts, and finding reliable textual supports is often a challenge too. This study presents the results of an experiment to use, as often as possible, multilingual EU resources with versions in Spanish and English as textual supports for a large sample of vocabulary that warranted research when the author was involved in translating into English a voluminous text of judgment summaries produced by the Supreme Court of Spain. In the majority of cases it was indeed possible to find high quality translations in EUR-Lex (Access to European Law) and IATE (InterActive Terminology for Europe), signaling, on the one hand, significant legal language overlap possibilities between the EU and Spain and, on the other, great potential for employing the former’s linguistic resources in the translation of the latter’s legal texts. Moreover, this study analyzes the results with an eye to linking the different types of vocabulary items that were searched to the different types of textual supports they were found in, to see how different kinds of supports (a collection of texts and their translations, such as EUR-Lex, or a multilingual terminological resource, such as IATE) might pair well with different kinds of vocabulary items. In this way the study also addresses some of the different opinions surrounding using online collections of texts and their translations (i.e. multilingual corpora) vs. multilingual terminological resources.


2021 ◽  
Vol 66 (230) ◽  
pp. 101-133
Author(s):  
Stevan Lukovic ◽  
Stefan Vrzina ◽  
Milka Grbic ◽  
Milos Pjanic

The paper analyses the neutrality of taxation of investment projects on the example of Serbia. The aim of the research is to confirm/reject the existence of uniformity of the tax burden on investment projects that differ regarding the asset type, industry and the source of finance. The uniformity of tax burden, that is, the absence of discrimination and distortive effects of taxation, may be considered a confirmation of the tax neutrality. To investigate neutrality of taxation the analysis employed King-Fullerton framework of calculating effective marginal tax rates. The research results show that the tax treatment of investment projects in Serbia is nondiscriminatory. Marginal effective tax rates for different types of investment projects do not vary widely; that is, there are no investment projects that have a markedly favourable (unfavourable) tax treatment compared to the other types of investment projects.


2019 ◽  
Vol 282 ◽  
pp. 02044
Author(s):  
Jiří Zach ◽  
Jitka Peterková ◽  
Jan Bubeník

In most thermal insulation materials, reduced internal pressure improves thermal insulation properties. It reduces heat transport by convection as well as heat conduction in gases in the material´s pore structure. The dependence of thermal conductivity on pressure is individual to every type of insulation with open porosity. In general, a material with fine porosity is not very sensitive to pressure change within the range of very low pressure to vacuum. On the other hand, materials with a larger number of bigger pores are more sensitive to changing pressure. Any pressure change between atmosphere pressure and vacuum causes a change in thermal conductivity. The paper presents the results of an investigation into the behaviour of alternative fibrous insulations usable in the production of vacuum insulation panels at low pressure.


1999 ◽  
Vol 15 (3) ◽  
pp. 196-205 ◽  
Author(s):  
Rosario Martínez-Arias ◽  
Fernando Silva ◽  
Ma Teresa Díaz-Hidalgo ◽  
Generós Ortet ◽  
Micaela Moro

Summary: This paper presents the results obtained in Spain with The Interpersonal Adjective Scales of J.S. Wiggins (1995) concerning the variables' structure. There are two Spanish versions of IAS, developed by two independent research groups who were not aware of each other's work. One of these versions was published as an assessment test in 1996. Results from the other group have remained unpublished to date. The set of results presented here compares three sources of data: the original American manual (from Wiggins and collaborators), the Spanish manual (already published), and the new IAS (our own research). Results can be considered satisfactory since, broadly speaking, the inner structure of the original instrument is well replicated in the Spanish version.


1991 ◽  
Vol 17 (1) ◽  
pp. 53-62
Author(s):  
Irene Hughson

Summary This paper examines the horse carvings to be found on Class I and Class II Pictish sculptured stones and considers their reliability as evidence of the sort of horses and ponies that would have existed in the Early Historic Period. An attempt is made to show that the availability in Britain of good sized, high quality riding horses during that period is not inconsistent with what is known of the development and distribution of different types of horses in pre-hislory. The importance of horses and ponies in Early Historic societies is stressed and inferences drawn about the agricultural economy that could support horses and the skilled specialists required to look after them.


2019 ◽  
Author(s):  
SUSENO - SUSENO

ANALISIS VARIABEL YANG BERPENGARUH TERHADAP KINERJA PERUSAHAAN DI BURSA EFEK INDONESIAOleh : Suseno STIE SATRIA Purwokerto ABSTRACT The aims of the research are (1) to analyze influence of age, scale, financial leverage, and profitability to performance of firms at The Indonesian Stock Exchange. (2) to determine the most influential variable on the performance of the firms. Hypotheses proposed in this research were: (1) Age, Scales, Financial Leverage, Profitability influences the performance of firms, (2) Age influences the performance of firms, (3) Scales influences the performance of firms, (4) Financial Leverage influences the performance of firms, (5) Profitability influences the performance of firms. Instrument of analysis employed in the research was multiple linear regression with t test and F test.The results of analyses of t test showed that profitability did not influence the performance of the firms. It was indicated by the value of computed t which was smaller than the value of t table. Meanwhile, the t test of age, scale and financial leverage indicated that the value of computed t > t table. It means that these variables (scale and financial leverage) influenced the performance of the firms. The F test showed that the independent variables of age, scale, financial leverage and profitability as a whole significantly influenced the performance of the firms. It was indicated by the calculated F > the value of F table, the value the age computed t which was smaller than the value of -t table..Based on the research results that age and profitability do not influence the performance of the firms, it is suggested that investors should not pay any attention to those variables. On the other hand, they should pay attention to the variables of scale and financial leverage. It is recommended that for further research should include longer periode of the sample.


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