Methodological approach to assess the effect of soil ageing on selenium behaviour: first results concerning mobility and solid fractionation of selenium

2006 ◽  
Vol 42 (5) ◽  
pp. 379-386 ◽  
Author(s):  
F. Coppin ◽  
C. Chabroullet ◽  
A. Martin-Garin ◽  
J. Balesdent ◽  
J. P. Gaudet
Sensors ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 289 ◽  
Author(s):  
Davide Notti ◽  
Alberto Cina ◽  
Ambrogio Manzino ◽  
Alessio Colombo ◽  
Iosif Horea Bendea ◽  
...  

In recent years, the development of low-cost GNSS sensors allowed monitoring in a continuous way movement related to natural processes like landslides with increasing accuracy and limited efforts. In this work, we present the first results of an experimental low-cost GNSS continuous monitoring applied to an unstable slope affecting the Madonna del Sasso Sanctuary (NW Italy). The courtyard of Sanctuary is built on two unstable blocks delimited by a high cliff. Previous studies and non-continuous monitoring showed that blocks suffer a seasonal cycle of thermal expansion and a long-term trend to downslope a few millimeters (2/3) per year. The presence of a continuous monitoring solution could be an essential help to better understand the kinematics of unstable slope. Continuous monitoring could help to forecast a possible paroxysm phase that could end with a failure of the unstable area. The first year of experimental measurements shows a millimetric accuracy of low-cost GNSS, and the long-term trend is in agreement with other monitoring data. We also propose a methodological approach that considers the use of semi-automatized procedures for the identification of anomalous trends and a risk communication strategy. Pro and cons of the proposed methodology are also discussed.


2021 ◽  
Author(s):  
Anton Gudz ◽  
Ilnur Ilyasov ◽  
Alexander Podkorytov ◽  
Maksim Tomashevskiy ◽  
Nikolai Glushchenko

Abstract The paper describes the basic features of the East-Messoyahskoe oil field that are important for efficient reservoir development, the key of which are high oil viscosity (111 cP), high heterogenieity and permeability contrast, and the presence of aquifer with a different strength. The review of the experience in proactive breakthrough risks identification is presented. The actual breakthroughs during waterflooding of the PK-13 reservoir of the East-Messoyahskoe oil field are described and analyzed. The backgrounds and regularities increasing the risks of breakthroughs are identified. The analytical calculations have been made and key influencing factors have been defined. Based on the obtained results, the methodology of the proactive breakthrough identification was developed. The methodology has been tested in the real conditions of the East-Messoyahskoe oil field. The first results have been received, which confirm the operational efficiency of the developed methodological approach. All wells were rated according to their breakthrough risk, and measures for operative and proactive breakthroughs risk management has been proposed. All listed are combined into a system which permits minimization of breakthrough risks and manages them for the increase of unconsolidated heavy oil reservoirs development efficiency.


2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
S. A. Biancardo ◽  
M. Intignano ◽  
N. Viscione ◽  
S. Guerra De Oliveira ◽  
A. Tibaut

Building information modeling (BIM) is a powerful methodological approach for designers that has revolutionized the field of architecture and construction for some years now, minimizing errors and making the entire design, construction, and management process more efficient. The first results have been so encouraging that many countries, from Europe to the United States to Asian countries, have adopted specific regulations to promote its development and use. BIM models are based on the Industry Foundation Classes (IFC) standard, i.e., an object-based file format with a data model developed by building SMART to facilitate interoperability. Objects are characterized by properties, such as geometry, material, cost, and all related construction process information, such as scheduling or the maintenance process. The 3D modeling of these objects geometric information is parametric, in order to make the design more flexible. This research work offers an insight into the possibilities offered by different BIM-based tools for parametric modeling applied in the railway sector whereby an example of a railway section model is presented. Indeed, the focus will be on the creation of parametric objects representing railway components, as existing BIM object libraries lack them in the IFC2 × 3 standard format.


Author(s):  
Andrea Schaller ◽  
Gabriele Fohr ◽  
Carina Hoffmann ◽  
Gerrit Stassen ◽  
Bert Droste-Franke

Cross-company networking and counseling is considered to be a promising approach for workplace health promotion in small and medium-sized enterprises. However, a systematic and empirical approach on how such networks can be developed is lacking. The aims of the present paper are to describe the approach of a social network analysis supporting the development of a cross-company network promoting physical activity and to present first results. In the process of developing the methodological approach, a common understanding of the nodes and edges within the project was elaborated. Based on the BIG-model as the theoretical framework of the project, five measuring points and an application-oriented data collection table were determined. Using Gephi, network size, degree, and distance measures, as well as density and clustering measures, were calculated and visualized in the course of the time. First results showed a continuous expansion and densification of the network. The application experience showed that the application of social network analysis in practical cross-company network development is promising but currently still very resource intensive. In order to address the current major challenges and enable routine application, the development of an application-oriented and feasible tool could make an essential contribution.


Author(s):  
Patricia Lupion Torres

The Online Learning Laboratory, LOLA, is a collaborative learning methodology for classroom-based and distance learning that was defended in a PhD thesis and used in several subsequent research studies. In this chapter the author describes the first results of a case study undertaken with students on a postgraduate course in education. A further activity (the construction of a concept map) was added to the six activities in LOLA, and its inclusion was the object of this study. The methodological approach used in this research was a case study with an exploratory objective. To answer the questions raised in the study, a new review of the literature related to the following subjects was carried out: restructuring, implementing and following up the online learning laboratory methodology using concept maps; drawing up and applying a questionnaire; and analysis and discussion of the data obtained. A nonprobabilistic convenience sample was used. Their analysis and preliminary considerations focus on the data gathered from the students.


2020 ◽  
Vol 3 (4) ◽  
pp. 319-327
Author(s):  
Regina Leite ◽  
Lynn Alves

This article aims to present the first results of a study that investigates how construction companies can use gamification to help workers assume appropriate behaviors and motivate construction teams to achieve their production goals. It is an exploratory, empirical, qualitative research, for which the methodological approach is Design Science Research. A closed questionnaire was carried out to construction workers to understand the context of the workplace. This tool aims to investigate motivational aspects, and another questionnaire, with engineers, aims to identify which production problems to address in a proposal for a gamified model. The results show that most workers have a need to be recognized and that the proposed solution can contribute to the continuous improvement of the work environment. The article presents possibilities of using gamification in the construction environment to help workers in the prevention against COVID-19.  


2005 ◽  
Vol 2 ◽  
pp. 243-247 ◽  
Author(s):  
M. Greco ◽  
D. Mirauda ◽  
G. Squicciarino ◽  
V. Telesca

Abstract. The paper deals some important aspects concerning the study of desertification phenomenon that has significantly interested all European countries of the Mediterranean basin in the last decades. The territorial sensibility, qualitatively and/or quantitatively, of the risk related to the desertification processes has been valued as grade of susceptibility to the phenomenon in the study area, with respect to the hydraulic and hydrologic conditioning factors. The methodological approach followed is based on the classification of desertification indicators by means of a suitable conceptual model applied to the study area in Basilicata region. The classical desertification indexes have been evaluate referring to the study area generating temporal informative map. To achieve such objective, the historical series of temperatures and rainfall of several gauge-stations have been analysed, and the first results show an increasing trend for the temperature in last years, according to the global scale. An increase of aridity and erosion index values is, also, outlined by the collected data with slight reductions at higher altitudes.


Author(s):  
Claudia Santamaría Cabornero ◽  
Sergio Miguel Luengo Cortés ◽  
Marta Navazo Ruiz ◽  
Alfonso Benito-Calvo ◽  
Ignacio Martín Lerma

This work aims to analyze the Laser Scanning Confocal Microscope (LSCM) potential for use-waer analysis in lithic industry. This kind of studies seeks to identify use marks in stone tools in order to meet the various activities carried out by human groups during prehistoric times. Therefore we propose microscopic analysis by confocal microscope as progress in quantifying marks or surface patterns, achieving favorable results for use-wear analysis, and Archaeology in general.


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