Review of piston reactors for the production of chemicals

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Anchu Ashok ◽  
Mary Anna Katebah ◽  
Patrick Linke ◽  
Dharmesh Kumar ◽  
Dhruv Arora ◽  
...  
Keyword(s):  
State Of The Art ◽  
Chemical Reactor ◽  
Future Research ◽  
Research Gaps ◽  
Chemical Reactors ◽  
Current State ◽  
High Temperature And Pressure ◽  
Temperature And Pressure ◽  
Design Options ◽  
Very High

Abstract To explore options for simple, safe, and compact chemical reactors that preserve wanted metastable initial products from sequential unwanted reactions, academic and industrial researchers have tried to repurpose reciprocating piston equipment or an “engine-like” design to be used as a chemical reactor. Piston reactors offer the benefit of achieving very high temperature and pressure conditions at very short and defined residence times. Such conditions offer promise for enhanced performance for several chemical conversions. This paper provides a review of the published literature and patents in the field of piston reactors to provide an overview of the current state-of-the-art. The review covers multiple aspects of piston reactors and their applications, reactor design options and their operation, catalyst and ignition placement, tested reactions, experimental setups as well as modeling and simulation. Several research gaps are highlighted as a motivation for future research in the field. To help interested readers into the topic, basic concepts and fundamentals of piston reactors are provided.

scholarly journals A Lab Model for Symptom Exaggeration: What do we Need?

2016 ◽  
Vol 8 (1) ◽  
pp. 55-75 ◽  
Author(s):  
Isabella J. M. Niesten ◽  
Harald Merckelbach ◽  
Alfons Van Impelen ◽  
Marko Jelicic ◽  
Angel Manderson ◽  
...  
Keyword(s):  
Cognitive Dissonance ◽  
State Of The Art ◽  
Future Research ◽  
Current Form ◽  
Research Participants ◽  
Current State ◽  
Symptom Exaggeration ◽  
Valid Data ◽  
Theoretical Foundations

This article reflects on the current state of the art in research on individuals who exaggerate their symptoms (i.e., feigning). We argue that the most commonly used approach in this field, namely simply providing research participants with instructions to overreport symptoms, is valuable for validating measures that tap into symptom exaggeration, but is less suitable for addressing the theoretical foundations of feigning. That is, feigning serves to actively mislead others and is done deliberately. These characteristics produce experiences (e.g., feelings of guilt) in individuals who feign that lab research in its current form is unable to accommodate for. Paradigms that take these factors into account may not only yield more ecologically valid data, but may also stimulate a shift from the study of how to detect feigning to more fundamental issues. One such issue is the cognitive dissonance (e.g., feelings of guilt) that – in some cases – accompanies feigning and that may foster internalized fabrications. We present three studies (N's = 78, 60, and 54) in which we tried to abate current issues and discuss their merits for future research.

scholarly journals About uncertainties in practical salinity calculations

Ocean Science ◽  
2011 ◽  
Vol 7 (5) ◽  
pp. 651-659 ◽  
Author(s):  
M. Le Menn
Keyword(s):  
State Of The Art ◽  
Conductivity Ratio ◽  
Real Analysis ◽  
Error Sources ◽  
Current State ◽  
Laboratory Calibration ◽  
Temperature And Pressure ◽  
Conductivity Cell ◽  
Temperature Depth

Abstract. In the current state of the art, salinity is a quantity computed from conductivity ratio measurements, with temperature and pressure known at the time of the measurement, and using the Practical Salinity Scale algorithm of 1978 (PSS-78). This calculation gives practical salinity values S. The uncertainty expected in PSS-78 values is ±0.002, but no details have ever been given on the method used to work out this uncertainty, and the error sources to include in this calculation. Following a guide published by the Bureau International des Poids et Mesures (BIPM), using two independent methods, this paper assesses the uncertainties of salinity values obtained from a laboratory salinometer and Conductivity-Temperature-Depth (CTD) measurements after laboratory calibration of a conductivity cell. The results show that the part due to the PSS-78 relations fits is sometimes as significant as the instrument's. This is particularly the case with CTD measurements where correlations between variables contribute mainly to decreasing the uncertainty of S, even when expanded uncertainties of conductivity cell calibrations are for the most part in the order of 0.002 mS cm−1. The relations given here, and obtained with the normalized GUM method, allow a real analysis of the uncertainties' sources and they can be used in a more general way, with instruments having different specifications.

scholarly journals INTEREST-FREE FINANCING IN AGRO-INDUSTRY: CONCEPTS, THEORIES, METHODS AND RESEARCH GAPS

2021 ◽  
Vol 9 (03) ◽  
pp. 84-94
Author(s):  
Kiki Yulianto ◽  
◽  
Sukardi a ◽  
Nastiti Siswi Indrasti ◽  
Sapta Raharja ◽  
...  
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
State Of The Art ◽  
Secondary Data ◽  
Future Research ◽  
Literature Study ◽  
Research Gaps ◽  
The Road ◽  
Road Map ◽  
Conference Papers

Interest-free financing in agro-industry is an exciting topic that has been developed by many researchers, but there is no clarity regarding the road map for future research. Therefore, formulations such as concepts, theories, methods, and research gaps, focusing on interest-free financing in agro-industry, are essential. This literature study was conducted using a systematic literature review method. The data used are secondary data from textbooks, theses/dissertations, conference papers, journals, scientific articles, and working papers. This study resulted in the formulation of the theory, concepts, and methods studied in the form of an explanation of 8 sub-topics of research gaps supported by references and explanations of state of the art. They are making it easier for researchers who have the same interest in developing and looking for novelties with the topic of interest-free financing research in the agro-industry.

Sport in business studies: a state-of-the-art literature review

2018 ◽  
Vol 8 (5) ◽  
pp. 529-546
Author(s):  
Christofer Laurell ◽  
Sten Soderman
Keyword(s):  
Systematic Review ◽  
Literature Review ◽  
Marketing Strategy ◽  
Design Methodology ◽  
State Of The Art ◽  
Future Research ◽  
Content Type ◽  
Business Studies ◽  
Current State ◽  
State Of Research

PurposeThe purpose of this paper is to provide a systematic review of articles on sport published in leading business studies journals within marketing, organisational studies and strategy.Design/methodology/approachBased on a review of 38 identified articles within the subfields of marketing, strategy and organisation studies published between 2000 and 2015, the articles’ topical, theoretical and methodological orientation within the studied subfields were analysed followed by a cross-subfield analysis.FindingsThe authors identify considerable differences in topical, theoretical and methodological orientation among the studied subfields’ associated articles. Overall, the authors also find that articles across all subfields tend to be focussed on contributing to mature theory, even though the subfield of marketing in particular exhibits contributions to nascent theory in contrast to organisation studies and strategy.Originality/valueThis paper contributes by illustrating the current state of research that is devoted or related to the phenomenon of sport within three subfields in business studies. Furthermore, the authors discuss the role played by leading business studies journalsvis-à-vissport sector-specific journals and offer avenues for future research.

System integration of high intensity energy subsystems – a thermal management challenge

2008 ◽  
Vol 112 (1134) ◽  
pp. 477-482
Author(s):  
D. M. Pratt ◽  
D. Moorhouse
Keyword(s):  
Thermal Management ◽  
Air Force ◽  
System Integration ◽  
High Intensity ◽  
State Of The Art ◽  
Cooling Capacity ◽  
Future Research ◽  
Current State ◽  
Management Capability ◽  
Management Challenge

Current and future Air Force weapons systems lack the necessary power and cooling capacity to provide full systems level capability as a result of energy and thermal management limitations. Cooling capacity of fuel is already fully utilised leaving little room for additional cooling needs. Additionally, increasing speed, power, and miniaturisation of future systems continue to stress any thermal management capability that we can now deliver. Thus, the focus of this paper is a conceptual assessment of the key energy and thermal management technologies to meet the future energy challenges. It presents an overview of the current state of the art and also possible future research.

scholarly journals Sustainability in Heritage Wood Conservation: Challenges and Directions for Future Research

Forests ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 18
Author(s):  
Zarah Walsh-Korb
Keyword(s):  
Sustainable Development Goals ◽  
State Of The Art ◽  
Heritage Conservation ◽  
Future Research ◽  
Research Directions ◽  
Current State ◽  
The Future ◽  
Development Goals ◽  
Sustainable Conservation ◽  
New Research

Conserving the world’s cultural and natural heritage is considered a key contributor to achieving the targets set out in the United Nation’s Sustainable Development Goals, yet how much attention do we pay to the methods we use to conserve and protect this heritage? With a specific focus on wooden objects of cultural heritage, this review discusses the current state-of-the-art in heritage conservation in terms of sustainability, sustainable alternatives to currently used consolidants, and new research directions that could lead to more sustainable consolidants in the future. Within each stage a thorough discussion of the synthesis mechanisms and/or extraction protocols, particularly for bio-based resources is provided, evaluating resource usage and environmental impact. This is intended to give the reader a better understanding of the overall sustainability of each different approach and better evaluate consolidant choices for a more sustainable approach. The challenges facing the development of sustainable consolidants and recent research that is likely to lead to highly sustainable new consolidant strategies in the future are also discussed. This review aims to contribute to the ongoing discussion of sustainable conservation and highlight the role that consolidants play in truly sustainable heritage conservation.

scholarly journals Corporate entrepreneurship: a systematic literature review and future research agenda

2022 ◽  
Author(s):  
David Urbano ◽  
Andreu Turro ◽  
Mike Wright ◽  
Shaker Zahra
Keyword(s):  
Research Agenda ◽  
State Of The Art ◽  
Corporate Entrepreneurship ◽  
Global Perspective ◽  
Future Research ◽  
Future Research Agenda ◽  
Current State ◽  
Literature Reviews ◽  
Antecedents And Consequences ◽  
State Of Research

AbstractThis article analyzes the state of the art of the research on corporate entrepreneurship, develops a conceptual framework that connects its antecedents and consequences, and offers an agenda for future research. We review 310 papers published in entrepreneurship and management journals, providing an assessment of the current state of research and, subsequently, we suggest research avenues in three different areas: corporate entrepreneurship antecedents, dimensions and consequences. Even though a significant part of the overall corporate entrepreneurship literature has appeared in the last decade, most literature reviews were published earlier. These reviews typically cover a single dimension of the corporate entrepreneurship phenomenon and, therefore, do not provide a global perspective on the existing literature. In addition, corporate entrepreneurship has been studied from different fields and there are different approaches and definitions to it. This limits our understanding of accumulated knowledge in this area and hampers the development of further research. Our review addresses these shortcomings, providing a roadmap for future research.

scholarly journals A Primer in BERTology: What We Know About How BERT Works

2020 ◽  
Vol 8 ◽  
pp. 842-866
Author(s):  
Anna Rogers ◽  
Olga Kovaleva ◽  
Anna Rumshisky
Keyword(s):  
State Of The Art ◽  
Future Research ◽  
Current State

Transformer-based models have pushed state of the art in many areas of NLP, but our understanding of what is behind their success is still limited. This paper is the first survey of over 150 studies of the popular BERT model. We review the current state of knowledge about how BERT works, what kind of information it learns and how it is represented, common modifications to its training objectives and architecture, the overparameterization issue, and approaches to compression. We then outline directions for future research.

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