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Number of results: 6
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Abstract

The longwall mining system with fall of the roof is still the most common hard coal extraction system in Polish mining. Its utilization for selective coal seams’ mining results in the development of post-extraction gobs at different depths. Methane desorption phenomena from the coal seams in the stress release zones and migration of gas towards the area of operations, result in methane accumulating also after completion of coal exploitation. Methane which is not exploited from the gobs can migrate directly to the atmosphere e.g. through overlying layers, faults, workings or directly via an operated ventilation grid of an adjacent coal mine – contributing to the Greenhouse Gas effect. One of the methods to capture methane (Abandoned Maine Methane) from abandoned coal mines is to drill vertical wells through several post-extraction gobs from the surface.

This paper presents the results of drilling operations at the AGH-Wieczorek-1 well, where first time in Poland, down-the-hole-hammer (DTH) with casing-while-drilling (CwD) technology were used to drill through several post-extraction gobs. The AGH-Wieczorek-1 well with 440.0 m MD was successfully drilled without any complications. Finally, three post-extraction gobs and two coal seams were drilled. Additionally, results from drillability tests, which were performed during drilling operations, are presented.

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Authors and Affiliations

Jakub Siemek
Jan Macuda
Łukasz Łukańko
Jacek Hendel
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Abstract

By the emergence of distributed energy resources, with their associated communication and control complexities, there is a need for an efficient platform that can digest all the incoming data and ensure the reliable operation of the power system, which can be achieved by using digital twins. The paper discusses the advantages of using digital twins in the development of control systems and operation of distributed heat and electric power generation facilities. The possibilities of using the digital doubles for increasing the efficiency of the considered objects is presented as the example of optimizing the configuration of a control system of solar collectors in the presence of heat losses in pipelines of the external circuit. Further, the total balance consumed and generated electric and heat energy are presented. Examples of algorithms for protecting equipment to improve security are given, and the possibilities of improving the reliability of distributed power systems are considered. The system use of the digital twins provides the possibility of developing and debugging control algorithms, which increase the efficiency, reliability and safety of control objects, including distributed thermal and electrical power generation complexes.
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Authors and Affiliations

Makhsud Mansurovich Sultanov
1
Edik Koirunovich Arakelyan
1
Ilia Anatolevich Boldyrev
1
Valentina Sergeevna Lunenko
1
Pavel Dmitrievich Menshikov
1

  1. National Research University MPEI, Krasnokazarmennaya 17, Moscow, 111250 Russia
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Abstract

The aim of the paper is to analyse the Italian medical terminology, in particular will be taken into consideration the link between names of different illnesses and rhetoric procedures that might have influenced their lexical form. The examples of medical nomenclature will enable to illustrate the attitude towards the concept of illness and to show the complexity of phenomena perception and the impossibility to understand them completely. For this reason literary tropes, especially metonymy, enable to create terminology, although it will be never enough sufficient to guarantee the highest precision of these concepts.

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Authors and Affiliations

Katarzyna Maniowska
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Abstract

Each piece of information is distributed in the form of a message. Its character takes various forms, it can be expressed by words or in images. It is the visual form which is the most effective tool of influence. Graphic signs are often used to convey or exchange thoughts. The signs have an informative function but they are also meant to force a specific behavior. Such a change in expectations and beliefs of a specific regulator is called the social impact. The intensity of interpersonal relationships is deliberately stimulated through an appropriate form of communication. The more expressive and emotional is its character, the greater the benefits for the quality of communication in the process of promoting healthy behaviors.
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Authors and Affiliations

Artur Fałek
1
Franciszek Burdan
2

  1. Independent Public Healthcare, Puławy, Poland
  2. St. John’s Cancer Center; Human Anatomy Department, Medical University of Lublin, Lublin, Poland
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Abstract

The installations of CO2 capture from flue gases using chemical absorption require a supply of large amounts of heat into the system. The most common heating medium is steam extracted from the cycle, which results in a decrease in the power unit efficiency. The use of heat needed for the desorption process from another source could be an option for this configuration. The paper presents an application of gas-air systems for the generation of extra amounts of energy and heat. Gas-air systems, referred to as the air bottoming cycle (ABC), are composed of a gas turbine powered by natural gas, air compressor and air turbine coupled to the system by means of a heat exchanger. Example configurations of gas-air systems are presented. The efficiency and power values, as well as heat fluxes of the systems under consideration are determined. For comparison purposes, the results of modelling a system consisting of a gas turbine and a regenerative exchanger are presented.
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Authors and Affiliations

Sebastian Lepszy
Tadeusz Chmielniak
Daniel Czaja
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Abstract

Anaphylaxis is an increasing problem in public health. Th e food allergens (mainly milk, eggs, and peanuts) are the most frequent cause of anaphylaxis in children and youth. In order to defi ne the cause of anaphylaxis, skin tests, the determination of the concentration of specifi c IgE in the blood and basophil activation test are conducted. In vitro tests are preferred due to the risk of allergic response during in vivo tests. Component-resolved diagnosis (CRD) is an additional tool in allergology, recommended in the third level of diagnostics when there are diagnostic doubts aft er the above mentioned tests have been carried out. The paper presents 3 cases of patients with anaphylactic response, and the application of CRD in these patients helped in planning the treatment. Patient 1 is a 4-year-old boy with diagnosed atopic dermatitis and bronchial asthma reported an anaphylactic shock at the age of seven months caused by cow’s milk and the exacerbation of bronchial asthma aft er eating some fruit. Patient 2 is a 35-year-old woman who has had anaphylactic shock three times: in June 2015, 2016, and 2017 and associates these episodes with the consumption of dumplings with a caramel, bun, and the last episode took place during physical exertion few hours aft er eating waffl e. Patient 3 is a 26-year-old man with one-time loss of consciousness after eating mixed nuts and drinking beer. CRD off ers the possibility to conduct a detailed diagnostic evaluation of patients with a history of anaphylactic reaction.

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Authors and Affiliations

Małgorzata Bulanda
Magdalena Leśniak
Judyta Szałkowska
Weronika Madej
Agata Wojtyna
Maria Czarnobilska
Daniel Bulanda
Ewa Czarnobilska

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