Characterization techniques of packing material colonization in gas biofiltration processesThis article is one of a selection of papers published in this Special Issue on Biological Air Treatment.

2009 ◽  
Vol 36 (12) ◽  
pp. 1895-1902 ◽  
Author(s):  
Yves Andres ◽  
Eric Dumont ◽  
Claire Gerente
Keyword(s):  
Development Process ◽  
Packing Material ◽  
Main Research ◽  
Air Treatment ◽  
Cell Biomass ◽  
Pollutant Concentrations ◽  
Filter Bed ◽  
Air Streams ◽  
Research Domains ◽  
Selection Of

Biological air treatment is largely used for the decontamination of large air streams with low pollutant concentrations. As a result of microbial metabolism, the pollutants are degraded into carbon dioxide and water or converted into cell biomass. Three main research domains have emerged within the field of biofiltration: filter bed development, process optimization, and microbiological studies (community, nutrients, …). The objective of this paper is to focus on the microbial activities in air biofiltration processes. The nutrient contribution and the packing material effects are described. Special attention is paid to the description of techniques for the characterization and identification of the microbial population.

Biofiltration of methane using an inorganic filter bed: Influence of inlet load and nitrogen concentrationThis article is one of a selection of papers published in this Special Issue on Biological Air Treatment.

2009 ◽  
Vol 36 (12) ◽  
pp. 1903-1910 ◽  
Author(s):  
Josiane Nikiema ◽  
Matthieu Girard ◽  
Ryszard Brzezinski ◽  
Michèle Heitz
Keyword(s):  
Nutrient Solution ◽  
Nitrogen Concentration ◽  
Filter Material ◽  
Optimum Level ◽  
Special Issue ◽  
Air Treatment ◽  
Maximum Elimination Capacity ◽  
Filter Bed ◽  
Selection Of

An upflow lab-scale biofilter was operated with an inorganic filter material to control methane emissions. The influence of the inlet load on methane removal was investigated and the maximum elimination capacity obtained was 36 g/(m3·h) for an inlet load of 95 g/(m3·h). The influence of the nitrogen concentration, which was provided in the form of nitrate through a nutrient solution, was also determined. We established that the optimum nitrogen concentration required for biofilter operation decreases with the methane inlet load. In fact, it was around 0.75 g/L for inlet loads comprised between 55 and 95 g/(m3·h) and of 0.50 g/L when the inlet load was comprised between 20 and 55 g/(m3·h). During this study, a nitrogen concentration of 1.00 g/L inhibited methane removal in the biofilter. In addition, the use of a nitrogen concentration superior to its optimum level can cause, in the long-term run, severe damages to the biofilter performance.

scholarly journals An Overarching Review on Delay Analyses in Construction Projects

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 109
Author(s):  
Murat Çevikbaş ◽  
Zeynep Işık
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Web Of Science ◽  
Delay Analysis ◽  
Future Studies ◽  
Main Research ◽  
Research Areas ◽  
Road Map ◽  
Research Themes ◽  
Research Domains

Numerous studies have been conducted by researchers on the delay analysis topic, which is one of the primary areas of scientific study due to the effects of delays on time and cost in construction projects. Following fruitful contributions made by the researchers, it is believed to be extremely important to summarize the existing studies in terms of being a road map for future studies and practitioners. In this context, not only does this study aim to detect the most significant authors, sources, organizations and countries contributing to the improvement of delay domain in the construction industry concerning delay analyses worldwide but also to provide the researchers with extensive insights concerning the prominent research themes, trends and gaps in the literature. Hence, 168 documents related to delay analyses from 1982 to 11 February 2021 were detected through the Scopus Database and the Web of Science Database, and scientometric analyses were conducted via VOSviewer software. By evaluating the related research, two main research areas were detected in this field, namely; improving the delay analysis methods and resolving the disputes before they occur. This study is believed to make theoretical and practical contributions in that it examines the delay analysis topic in all aspects such as prominent institutions, countries, authors and sources, synthesizes the data and highlights possible research domains, gaps and trends concerning the delay analysis topic in construction industry.

Wood Bark as Packing Material in a Biofilter used for Air Treatment

2006 ◽  
Vol 27 (12) ◽  
pp. 1297-1301 ◽  
Author(s):  
Y. Andres ◽  
E. Dumont ◽  
P. Le Cloirec ◽  
E. Ramirez-Lopez
Keyword(s):  
Packing Material ◽  
Air Treatment ◽  
Wood Bark

scholarly journals Developing Online Materials for Tour Guides

2018 ◽  
Vol 3 (1) ◽  
pp. 43
Author(s):  
Sinta Dewi Ratnawati
Keyword(s):  
Online Learning ◽  
Real Time ◽  
Development Process ◽  
Language Teaching ◽  
Teaching Approach ◽  
Online Classes ◽  
Material Development ◽  
Tour Guides ◽  
Goals And Objectives ◽  
Selection Of

This English for Specific/Occupational Purpose (ESP/EOP) program was meant to answer the needs of the Indonesian migrant labourers to improve their English for future employment as tour guides. The objectives of this research were to identify the contents that should be in the materials, to investigate the students’ response about the later developed materials, and to study the lacks in the program. The material development process underwent the 7 stages of material development proposed by Nation and Macalister (2010), consisted of analysing the environment and the needs, following principles, setting goals and objectives, choosing contents and sequence, finding the format and presentation, monitoring and assessing, and evaluating the course. However, since it is online learning, the stages had to be combined with the stages specifically for online materials proposed by Hartoyo (2012). Thus, the content and sequence choosing stage consisted of the selection of the types of program, materials, software and tasks. The materials consisted of 2 parts which were the tutorials and the lessons. Using the Task-Based Language Teaching approach (Nunan, 2004), the materials were developed and implemented combined with real time online classes. The students’ responses after the implementation were generally positive, although some improvements were still needed.   Keywords: English for specific purpose (ESP), English for occupational purpose (EOP), material development, online learning, English for tour guides, Task-Based Language Teaching (TBLT)

Serienreifmachung in der Nutzfahrzeug-Industrie*/Attaining production-readiness - Standardization in the commercial vehicle industry: problems, challenges and solutions

2015 ◽  
Vol 105 (03) ◽  
pp. 152-155
Author(s):  
T. Steinhäußer ◽  
G. Reinhart
Keyword(s):  
Product Development ◽  
Development Process ◽  
Commercial Vehicle ◽  
Product Development Process ◽  
Definition Of ◽  
Selection Of

Aufbauend auf einer zeitlichen und inhaltlichen Abgrenzung im Produktentstehungsprozess (PEP) stellt der Fachbeitrag verschiedene Probleme vor, die bei der Serienreifmachung allgemein und in der Nutzfahrzeug-Industrie im Speziellen auftreten. Anschließend werden Herausforderungen abgeleitet, die es bei der Entwicklung eines Konzepts für die Serienreifmachung in der Nutzfahrzeug-Industrie zu bewältigen gilt.   Based on a definition of the process of attaining production-readiness in the context of the product development process, this article presents several problems that occur during the process of attaining production-readiness in general and specifically in the commercial vehicle industry. Furthermore, a selection of challenges is derived from the presented problems and an approach to cope with these challenges is suggested.

The Varieties of Scrubbers, Tubing, and Tubing Connectors

2018 ◽  
pp. 221-231
Author(s):  
John R. B. Lighton
Keyword(s):  
Carbon Dioxide ◽  
Water Vapor ◽  
Correct Selection ◽  
Flow Rates ◽  
Intended Application ◽  
Metabolic Measurement ◽  
Air Streams ◽  
Selection Of ◽  
Selective Membranes

This chapter discusses several often-neglected areas of respirometry infrastructure. These include the correct selection of scrubber chemicals for removing water vapor and/or carbon dioxide from air streams, without undesirable interactions; chemical-free scrubbing techniques such as selective membranes, thermal condensing systems, and mathematical correction for water vapor dilution; selecting tubing for metabolic measurement; evaluating the different tubing chemistries in light of the intended application; selecting appropriate tubing diameters for the flow rates that will be used; selecting tubing connectors; maintaining connector gender conventions to minimize plumbing confusion; and other related topics.

Exploring the Selection of Technology for Enabling Communities

2011 ◽  
pp. 166-176
Author(s):  
Keith Patrick ◽  
Andrew Cox ◽  
Rahman Abdullah
Keyword(s):  
Community Development ◽  
System Approach ◽  
Development Process ◽  
The Common ◽  
Selection Of

Communities, whilst represented and apparent in their members, are most evident in the technological entity—the technology and tools that support the common and communal activities. Technology acts as the enabler linking a group of individuals who are most likely dispersed, in terms of time and place, and facilitates their interaction. So you have decided or been asked to create or facilitate the activities of a community, but how do you select an appropriate solution for the requirements of a particular community and its members? Do you follow a traditional systems and software acquisition route: establish the requirement, develop the system, approach a consultant, call the IS department to see how you can adapt existing technologies? Or do you adopt an approach that can also be viewed as part of the community development process through the generation of involvement, engagement leading to ownership of the community and therein its future activities?

The Structure of Prediction Market Research: Important Publications and Research Clusters

2017 ◽  
Vol 11 (1) ◽  
pp. 51-65
Author(s):  
Frank M. A. Klingert
Keyword(s):  
Market Research ◽  
A Priori ◽  
Information Aggregation ◽  
Research Paper ◽  
Prediction Market ◽  
Main Research ◽  
Literature Reviews ◽  
Efficient Information ◽  
Number Of Publications ◽  
Selection Of

This research paper identifies the most important publications and research clusters in the field of prediction markets. Two literature reviews in 2007 and 2014 have already shown a rising number of publications and classified them into several classes. However, the a priori selection of classes limited the analysis. Furthermore, it is still not quantitatively measured which publications have influenced prediction market research most. This research paper extends the existing literature based on the analysis of more than 18,000 citations. Thus, it identifies the most important publications and relevant research topics. It indicates that prediction market research relies primarily on publications within its own field. This paper concludes that some publications have already become “classic” and four main research clusters have emerged: Efficient information aggregation, manipulation, innovation markets and forecasting elections.

scholarly journals Analysis of tank safety with propane-butane on LPG distribution station

2017 ◽  
Vol 19 (4) ◽  
pp. 99-102 ◽  
Author(s):  
Zbigniew Krzysiak ◽  
Waldemar Samociuk ◽  
Grzegorz Bartnik ◽  
Krzysztof Plizga ◽  
Dariusz Dziki ◽  
...  
Keyword(s):  
Safety Valve ◽  
Technological Changes ◽  
Loss Of Life ◽  
Main Research ◽  
Tank System ◽  
Research Goal ◽  
Distribution Station ◽  
Research Analysis ◽  
Selection Of ◽  
Propane Butane

Abstract An analysis of the risk of failure in the safety valve – tank with propane-butane (LPG) system has been conducted. An uncontrolled outflow of liquid LPG, caused by a failure of the above mentioned system has been considered as a threat. The main research goal of the study is the hazardous analysis of propane-butane gas outflow for the safety valve – LPG tank system. The additional goal is the development of an useful method to fast identify the hazard of a mismatched safety valve. The results of the research analysis have confirmed that safety valves are basic protection of the installation (tank) against failures that can lead to loss of life, material damage and further undesired costs of their unreliability. That is why a new, professional computer program has been created that allows for the selection of safety valves or for the verification of a safety valve selection in installations where any technical or technological changes have been made.

scholarly journals Selection of internal control genes for quantitative real-time RT-PCR studies during tomato development process

2008 ◽  
Vol 8 (1) ◽  
pp. 131 ◽  
Author(s):  
Marino Expósito-Rodríguez ◽  
Andrés A Borges ◽  
Andrés Borges-Pérez ◽  
José A Pérez
Keyword(s):  
Real Time ◽  
Internal Control ◽  
Development Process ◽  
Rt Pcr ◽  
Internal Control Genes ◽  
Selection Of
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