Application of Risk-Informed Inspection Strategy to Improve the Lifetime and Efficiency of Cleaning Pigs

2012 ◽  
Vol 729 ◽  
pp. 338-343 ◽  
Author(s):  
R. Fótos ◽  
Zsuzsanna Koncsik ◽  
János Lukács

The aim of the research work was to analyze the operation of cleaning pigs, in natural gas transportation pipelines from point of view of risk-informed in-service inspection. During the analysis, the main factors considered were the stresses (mechanical, thermal and environmental) and loads, which have effect on cleaning pigs during its operation. The possible damage mechanisms were analyzed which can occur due to their consequences and qualitative probability analysis was performed on the basis of the available information.

2020 ◽  
Vol 12 (7) ◽  
pp. 1093
Author(s):  
Ignacio Martín Nieto ◽  
David Borge-Diez ◽  
Cristina Sáez Blázquez ◽  
Arturo Farfán Martín ◽  
Diego González-Aguilera

This research work aims at a multinational study in Europe of the emissions and energy costs generated by the operation of low enthalpy geothermal systems, with heat pumps fed by different energy sources. From an economic point of view, natural gas and biogas prices are, usually, lower than electricity ones. So it may be advantageous to use these energy sources to feed the heat pumps instead of electricity. From the environmental point of view, it is intended to highlight the fact that under certain conditions of electricity production (electricity mix), more CO2 emissions are produced by electricity consumption than using other a priori less “clean” energy sources such as natural gas. To establish the countries where each of the different heat pumps may be more cost-efficient and environmentally friendly, data from multi-source geospatial databases have been collected and analyzed. The results show that in the majority of cases, the electric heat pump is the most recommendable solution. However, there are some geographic locations (such as Poland and Estonia), where the gas engine heat pump may be a better alternative.


2016 ◽  
Vol 3 (1) ◽  
pp. 78
Author(s):  
Blerina Muskaj

At the beginning of my paper I will explain the concept of "Geopolitics of Energy", this will be done for a quite simple reason, because I want everyone who can sit to read this article to understand more clearly what is at stake, therefore allow them the comprehension of what is being elaborated bellow at first sight. Geopolitics of energy is a concept that relates to policies choosing exporters to implement on importers, is the policy that has an impact on energy consumption, which includes consumer’s choice in the geopolitical context, taking into account the economy, foreign policy, the safety of energy, environmental consequences and priorities that carries the energy exporter. This concept permits the understanding of how works the politics that undertakes this initiative taking into account natural resources such as: natural gas and oil. Natural gas and oil are two main resources that produce energy but also two main elements on which arises all the topic in the energetics game. For this paper is used qualitative methodology, through which we were able to accomplish this work. I focused on scientific literature, official publications and reports on energy geopolitics. The main aim has been to show how in this decade, energy security is at the center of geopolitical agenda and has become the focus of numerous political debates. Regarding this point of view, Europe is taking the initiative to create a common energy market within the continent by creating projects, in which Albania appears as a new regional energy potential. Russia, which is aiming to play a role in the international arena, is seeking to position itself geopolitically in "its political weapon", hydrocarbon resources, in particular natural gas resources.


2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Sorin Neacsu ◽  
Mihai Albulescu ◽  
Cornel Trifan

This work deals with the evaluation of the error level occurring at the measuring of natural gas volumes supplied to the household users. The main factors that influence the measuring errors are one by one analyzed, and then a methodology for estimating measuring error level is introduced. The results are experimentally confirmed by the data obtained from the regulate�measuring points equipped with temperature-correction devices.


Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1063
Author(s):  
Catalina Hernández Moris ◽  
Maria Teresa Cerda Guevara ◽  
Alois Salmon ◽  
Alvaro Lorca

The energy sector in Chile demands a significant increase in renewable energy sources in the near future, and concentrated solar power (CSP) technologies are becoming increasingly competitive as compared to natural gas plants. Motivated by this, this paper presents a comparison between solar technologies such as hybrid plants and natural gas-based thermal technologies, as both technologies share several characteristics that are comparable and beneficial for the power grid. This comparison is made from an economic point of view using the Levelized Cost of Energy (LCOE) metric and in terms of the systemic benefits related to flexibility, which is very much required due to the current decarbonization scenario of Chile’s energy matrix. The results show that the LCOE of the four hybrid plant models studied is lower than the LCOE of the gas plant. A solar hybrid plant configuration composed of a photovoltaic and solar tower plant (STP) with 13 h of storage and without generation restrictions has an LCOE 53 USD/MWh, while the natural gas technology evaluated with an 85% plant factor and a variable fuel cost of 2.0 USD/MMBtu has an LCOE of 86 USD/MWh. Thus, solar hybrid plants under a particular set of conditions are shown to be more cost-effective than their closest competitor for the Chilean grid while still providing significant dispatchability and flexibility.


Author(s):  
Karina Tamião de Campos Roseno ◽  
Rita M. de B. Alves ◽  
Reinaldo Giudici ◽  
Martin Schmal

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4005 ◽  
Author(s):  
Angelats Lobo ◽  
Ginestra

The classic cell culture involves the use of support in two dimensions, such as a well plate or a Petri dish, that allows the culture of different types of cells. However, this technique does not mimic the natural microenvironment where the cells are exposed to. To solve that, three-dimensional bioprinting techniques were implemented, which involves the use of biopolymers and/or synthetic materials and cells. Because of a lack of information between data sources, the objective of this review paper is, to sum up, all the available information on the topic of bioprinting and to help researchers with the problematics with 3D bioprinters, such as the 3D-Bioplotter™. The 3D-Bioplotter™ has been used in the pre-clinical field since 2000 and could allow the printing of more than one material at the same time, and therefore to increase the complexity of the 3D structure manufactured. It is also very precise with maximum flexibility and a user-friendly and stable software that allows the optimization of the bioprinting process on the technological point of view. Different applications have resulted from the research on this field, mainly focused on regenerative medicine, but the lack of information and/or the possible misunderstandings between papers makes the reproducibility of the tests difficult. Nowadays, the 3D Bioprinting is evolving into another technology called 4D Bioprinting, which promises to be the next step in the bioprinting field and might promote great applications in the future.


Author(s):  
О.А. Матвейчев

Гермотим из Клазомен – фигура в истории греческой философии, можно сказать, маргинальная. В современной литературе он появляется разве что в ряду других колдунов и мистиков VII–VI вв. до н.э. В таком статусе он включается и в собрание Дильса. Анализируя сведения о Гермотиме, автор ставит перед собой цель найти ему место среди малоазийских философов первой величины, которых считают основателями греческой философии. Различение духа (души) и материи (тела) станет основополагающим принципом греческой философии, понятие Ума (нуса) выступит фундаментом для системы Анаксагора, первого афинского философа, с которого, собственно, и начнется история классической греческой философии. Автор разделяет точку зрения Э. Доддса и др., что появление нового для Греции представления о различии души и тела коренится в северной (гиперборейской?) ментальности, привнесенной в греческий мир во времена колонизации VII–VI вв. до н.э., а возможно – и в более ранние. Ключевые слова: история философии, Древняя Греция, Гиперборея, Гермотим из Клазомен, Анаксагор, шаманизм, нус, душа, тело Hermotimus of Clazomenae can be called a marginal figure in the history of Greek philosophy. In modern literature he is mentioned only among other sorcerers and mystics of the VIIth–VIth centuries BC. The collection of Hermann Diels describes him in the same manner. Analyzing available information about Hermotimus, the author makes an attempt to place him among the primary Anatolian philosophers who are considered the founders of Greek philosophy. The distinction between spirit (soul) and matter (body) will become the fundamental principle of Greek philosophy; the concept of Nous (cosmic Mind) will be the foundation for the system of Anaxagoras, the first Athenian philosopher, from which, in fact, the history of classical Greek philosophy begins. The author shares the point of view of E. Dodds and others that the emergence of a new concept about the difference between soul and body in Greece is rooted in the northern (Hyperborean?) mentality introduced into the Greek world during the colonization of the VIIth–VIth centuries BC or possibly in earlier times. Keywords: history of philosophy, Ancient Greece, Hyperborea, Hermotimus of Clazomenae, Anaxagoras, shamanism, nous, soul, body


2020 ◽  
Author(s):  
S Chandrasekhar ◽  
Ajay Sharma ◽  
Sumit Mishra

Using the first ever available information in Census of India 2011, covering 640 sub-national units (districts) in India, we analyze the correlates of modes of transport used by non-agricultural workers at the regional level covering both rural and urban areas. Providing a holistic picture from the perspective policy and academic perspective, we bring out some key stylized facts. Further, using the Seemingly Unrelated Regression (SUR) estimation, we model the transport mode choice for commuting by the workers in the context of rural and urban India, and further extend it based on distinction in motorized and non-motorized transport modes. We find that urbanization level, population size and density along with education attainment and worker’s sex ratio (gender ratio among workers), age (elderly) and land use mix play very important role in regional pattern in transport mode choice for commuting. These results highlight the dire need for proper development of transport infrastructure and understanding its various dimensions from socio-economic, demographic and spatial point of view in the context of developing countries.


2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Stephan Von Haehling ◽  
Nicole Ebner ◽  
John E Morley ◽  
Andrew JS Coats ◽  
Stefan D Anker

AbstractThis article details the principles of ethical authorship and publishing in the Journal of Cachexia, Sarcopenia and Muscle Clinical Reports (JCSM Clinical Reports). At the time of submission to JCSM Clinical Reports, the corresponding author, on behalf of all co-authors, needs to certify adherence to these principles. The principles are obtained below: All authors listed on a manuscript considered for publication have approved its submission and (if accepted) publication as provided to JCSM Clinical Reports;No person having a right to be recognized as author has been omitted from the list of authors on the submitted manuscript;The submitted work is original and is neither under consideration elsewhere nor has it been published previously in whole or in part other than in abstract form;All authors certify that the work is original and does not contain excessive overlap with prior or contemporaneous publication elsewhere, and where the publication reports on cohorts, trials, or data that have been reported on before these other publications must be referenced;All original research work are approved by the relevant bodies such as institutional review boards or ethics committees;All conflicts of interest, financial or otherwise, that may affect the authors' ability to present data objectively, and relevant sources of funding have been duly declared in the manuscript;The manuscript in its published form will be maintained on the servers of JCSM Clinical Reports as a valid publication only as long as all statements in the guidelines on ethical publishing remain true; andIf any of the aforementioned statements ceases to be true, the authors have a duty to notify the Editors of JCSM Clinical Reports as soon as possible so that the available information regarding the published article can be updated and/or the manuscript can be withdrawn.


2021 ◽  
Vol 03 (08) ◽  
pp. 59-71
Author(s):  
Hayat NAJI

The translation of religious texts has always been a perilous undertaking, especially when it concerns a sacred text. Indeed, seeing translation as an act of communication requires a knowledge of the communicative parameters that constitute it. The translator-speaker, who plays the role of intermediary, must create an interaction at the level of meaning and its semantic components. From this emerges the role of the addressee as the main protagonist and the only interpretative force of the message. Thus, the process of negotiation manages the translating activity, since the transfer of a message is not only reduced to a process of reformulation of the source text in another language, but, largely exceeds this compartmentalization. We will first discuss the challenges and stakes of the translation of religious texts, which we have chosen to illustrate with examples that make this aspect clear. Then, we will insist on the question of the translation as a semantic negotiation, considering that there is a confrontation between transmitter and receiver from the point of view of knowledge, historical and linguistic references. Indeed, this facet of the pyramid where the cultural dimension of translation and interpretation is played out remains unknown and implicit. It is quite easy to reveal what is related to the cultural, social and historical reality of a particular receiver. But that is not enough to communicate, it is also necessary to question the cultural references of this one, the representations conveyed by the language. Indeed, we have chosen to present examples of the Holy Qur'an translated by translators of different religions, and given that some translations have deviated from the noble mission of translation, in this case, the faithful transmission of the meaning, without any objectivity whatsoever, especially when it is a sacred text whose inimitability is not to be proven or tested. Thus, the difficulty in our choice stems, on the one hand, from the sacred character of the chosen writing, and on the other hand, from the nature of research in this field which is condemned to remain always relative. Since several elements control the translation of the sacred text, namely, the language, the tradition and the personal factors of the translator. Finally, the field of religious translation requires a great deal of precision and neutrality, and a constant rethinking of the fact that the slightest subjective or cultural interpretation could call into question our research work. Thus, when it comes to cultural transfer, the translator's task is to take into consideration the knowledge that already exists in the target culture about the source culture. Indeed, it is necessary to know how to relate the knowledge concerning the target culture to the knowledge via the source culture. The translator is the first receiver who receives and interprets the message; he will therefore try to understand the source culture with his own knowledge and value judgments. The translator is indeed a mediator because he assumes two roles, that of receiver and reader of the source message, however, the translator having a task of reader which must be different from that of the normal reader, since he must undoubtedly appropriate the competence of mediator in communication which crosses with the function of transmitter of the translated message. Moreover, this same message undergoes a second transfer; the target reader receives it and interprets it in turn according to his own ideological and cultural schemes. Thus, the process of the translated text is not limited to a single phase, but, it enchains back and forth during which the text acquires the imprint of the translator who makes the transfer. Without forgetting to negotiate the meaning by respecting all the circumstances of the original text. So, to what extent can this semantic negotiation communicate the said and the unsaid of the text? .


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