Rivista e Edizione

Volume 76 (2021): Edizione 3 (September 2021)

Volume 75 (2021): Edizione 2 (June 2021)

Volume 74 (2021): Edizione 1 (March 2021)

Volume 73 (2020): Edizione 4 (December 2020)

Volume 72 (2020): Edizione 3 (September 2020)

Volume 71 (2020): Edizione 2 (June 2020)

Volume 70 (2020): Edizione 1 (March 2020)

Volume 69 (2019): Edizione 4 (December 2019)

Volume 68 (2019): Edizione 3 (September 2019)

Volume 67 (2019): Edizione 2 (June 2019)

Volume 66 (2019): Edizione 1 (March 2019)

Volume 65 (2018): Edizione 4 (December 2018)

Volume 64 (2018): Edizione 3 (September 2018)

Volume 63 (2018): Edizione 2 (June 2018)

Volume 62 (2018): Edizione 1 (March 2018)

Volume 61 (2017): Edizione 4 (December 2017)

Volume 60 (2017): Edizione 3 (October 2017)

Volume 59 (2017): Edizione 2 (June 2017)

Volume 58 (2017): Edizione 1 (March 2017)

Volume 57 (2016): Edizione 4 (December 2016)

Volume 56 (2016): Edizione 3 (September 2016)

Volume 55 (2016): Edizione 2 (June 2016)

Volume 54 (2016): Edizione 1 (March 2016)

Volume 53 (2015): Edizione 4 (December 2015)

Volume 52 (2015): Edizione 3 (December 2015)

Volume 51 (2015): Edizione 2 (June 2015)

Volume 50 (2015): Edizione 1 (March 2015)

Dettagli della rivista
Formato
Rivista
eISSN
2084-0535
Pubblicato per la prima volta
30 Mar 2015
Periodo di pubblicazione
4 volte all'anno
Lingue
Inglese

Cerca

Volume 65 (2018): Edizione 4 (December 2018)

Dettagli della rivista
Formato
Rivista
eISSN
2084-0535
Pubblicato per la prima volta
30 Mar 2015
Periodo di pubblicazione
4 volte all'anno
Lingue
Inglese

Cerca

7 Articoli
Accesso libero

Securing the hyperbaric treatment of decompression sickness in the polish navy

Pubblicato online: 29 Mar 2019
Pagine: 7 - 24

Astratto

Abstract

Recently, the Polish Navy has extended its capability for the implementation of underwater works with autonomous dives conducted beyond the saturation zone to a depth of 80 mH2O. In the near future it is also planned to introduce long-term dives within typical depths of the saturation plateau.

One of the activities resulting from the analysis of the risk associated with the extension of these competences is the need to conduct a critical review of the system for securing hyperbaric treatment of cases of decompression sickness1.

Parole chiave

  • decompression sickness
  • saturation diving
Accesso libero

The equivalence of quasi-chemical and statistical description of adsorbate molecule association in a localised adsorption monolayer on a homogeneous solid surface

Pubblicato online: 29 Mar 2019
Pagine: 25 - 38

Astratto

Abstract

The analysis of Berezin and Kiselev’s concept assuming linear association of molecules in a localised adsorption monolayer on the homogeneous surface of a solid adsorbent was carried out. An inconsistency due to the lack of consideration of equilibrium concentration of free adsorption sites in the formulation of the expression for the association constant has been pointed out. It was shown that the correct form of this function leads to the final adsorption equation being identical to the specific case of the Fowler-Guggenheim equation. The obtained result has been generalised to cases of branched adsorbateadsorbate associations. A new adsorption equation limiting the association to at most the dimers has been introduced. Critical conditions for the two-dimensional condensation of the adsorption layer were determined. By applying the formalism of canonical ensemble, full equivalence of the phenomenological and statistical methods was demonstrated in the description of the intermolecular interactions in the localised adsorption monolayer.

Parole chiave

  • chemical equilibrium
  • adsorption
  • Berezin and Kiseleve equation
  • adsorbate-adsorbate interactions
Accesso libero

The practical aspects of implementation of the thrust allocation procedure for a multi-propulsor underwater robot

Pubblicato online: 29 Mar 2019
Pagine: 39 - 48

Astratto

Abstract

This article addresses the practical aspects of the synthesis of an automatic control system for the thrust allocation strategy in the propulsion system of an unmanned underwater vehicle. The vehicle under consideration is a robot submarine equipped with a multi-propulsion system providing four degrees of freedom of movement. The power distribution algorithms are based on limited optimisation methods that allow the determination, on the basis of generalised torques and forces, of how much thrust is required to be produced by individual propulsors. Considering the issue of power distribution as a task of square and linear programming, two algorithms of thrust allocation were proposed and compared. The conducted model tests made it possible to evaluate their quality and efficiency in relation to speed and computational complexity.

Parole chiave

  • underwater vehicle
  • propulsion system
  • power distribution
Accesso libero

Utilising a Skin Prick Test for the determination of the presence of allergic rhinitis in divers

Pubblicato online: 29 Mar 2019
Pagine: 49 - 54

Astratto

Abstract

Allergic rhinitis occurs in various regions of the world and affects from 10 to 40% of the population. The skin prick test is the “gold standard” for the detection of type I allergic diseases according to the Gella and Coombs classification, which is mediated by IgE. For our experiment, skin prick tests were performed on 60 divers aged between 30 and 40 years of age. The following tests for airborne allergens were used: tests for pollen from trees, grasses, cereals, weeds, proteins from house dust mites, animal hair and epidermis, and moulds. On the basis of an interview and a positive skin prick test allergic rhinitis was diagnosed in 17 divers.

Conclusions:

Allergic rhinitis can cause health problems in divers and be the cause of diving accidents.

The application of the skin prick test during the health qualification in the Military Maritime Health Commission, would allow the exclusion of diver candidates suffering from allergies.

Parole chiave

  • scuba diving
  • Skin Prick Test
  • allergic rhinitis
  • divers
Accesso libero

Scientific diving in natural sciences

Pubblicato online: 29 Mar 2019
Pagine: 55 - 62

Astratto

Abstract

Scientific diving is increasingly being used for numerous studies. Moreover, this form of diving allows for the conduction of interdisciplinary research. The current nomenclature of this type of dive is defined as scuba diving to collect information to support science by using diving techniques. Underwater research is particularly important in the natural sciences where it allows for the non-invasive observations of fauna and flora of aquatic ecosystems in their natural environment. At the same time, the use of diving for scientific purposes avoids mistakes made in random sampling, which is related to the use of classical sampling methods. As a result, such diving is crucial in systematic, ecological and behavioural analysis. Nevertheless, dive techniques, however versatile, require optimisation, separate study and systematisation, depending on the type of research conducted. This article is an attempt to present an outline of the topic, to systematise basic concepts in presenting the principles of legal regulations in Poland and abroad..

Parole chiave

  • scientific diving
  • professional diving
  • underwater works
  • equipment for underwater research
Accesso libero

Teaching communication for safety in selected water based recreational disciplines

Pubblicato online: 29 Mar 2019
Pagine: 63 - 78

Astratto

Abstract

This paper describes the concept of didactic communication and verifies the course of teaching selected disciplines of water based recreation, i.e. swimming (at the standard technique level), handling a sailing boat whilst undertaking simple manoeuvres, and the basics of diving. At the same time, research in the area of experiments conducted in the field of teaching methods of these disciplines was reviewed in terms of teaching effectiveness, as well as the health and safety of the participants, and ways of communicating while in, on and under the water. Communication between an instructor and a student in any environment which is different from the norm, is difficult owing to its specificity. Additionally, teaching skills on, in or under water requires strict observance of safety rules. Lack of student’s readiness to act in a different water environment, be that based on anxiety or fear, may interfere with or, even prevent didactic communication. Consequently, the effectiveness of teaching decreases. The aim of this work is to search for innovative forms of information transfer that will enable a permanent change in the student’s behaviour, especially when acting in a difficult environment – on the water, in the water and under the water. There are premises to believe that immediate verbal instruction and emphasising the metalinguistic function in it should improve the quality and effectiveness of the process of teaching activities in various water based environments.

Parole chiave

  • teaching
  • swimming
  • sailing
  • diving
  • immediate verbal information
  • important metalinguistic function
Accesso libero

The not obvious obviousness…

Pubblicato online: 29 Mar 2019
Pagine: 79 - 84

Astratto

7 Articoli
Accesso libero

Securing the hyperbaric treatment of decompression sickness in the polish navy

Pubblicato online: 29 Mar 2019
Pagine: 7 - 24

Astratto

Abstract

Recently, the Polish Navy has extended its capability for the implementation of underwater works with autonomous dives conducted beyond the saturation zone to a depth of 80 mH2O. In the near future it is also planned to introduce long-term dives within typical depths of the saturation plateau.

One of the activities resulting from the analysis of the risk associated with the extension of these competences is the need to conduct a critical review of the system for securing hyperbaric treatment of cases of decompression sickness1.

Parole chiave

  • decompression sickness
  • saturation diving
Accesso libero

The equivalence of quasi-chemical and statistical description of adsorbate molecule association in a localised adsorption monolayer on a homogeneous solid surface

Pubblicato online: 29 Mar 2019
Pagine: 25 - 38

Astratto

Abstract

The analysis of Berezin and Kiselev’s concept assuming linear association of molecules in a localised adsorption monolayer on the homogeneous surface of a solid adsorbent was carried out. An inconsistency due to the lack of consideration of equilibrium concentration of free adsorption sites in the formulation of the expression for the association constant has been pointed out. It was shown that the correct form of this function leads to the final adsorption equation being identical to the specific case of the Fowler-Guggenheim equation. The obtained result has been generalised to cases of branched adsorbateadsorbate associations. A new adsorption equation limiting the association to at most the dimers has been introduced. Critical conditions for the two-dimensional condensation of the adsorption layer were determined. By applying the formalism of canonical ensemble, full equivalence of the phenomenological and statistical methods was demonstrated in the description of the intermolecular interactions in the localised adsorption monolayer.

Parole chiave

  • chemical equilibrium
  • adsorption
  • Berezin and Kiseleve equation
  • adsorbate-adsorbate interactions
Accesso libero

The practical aspects of implementation of the thrust allocation procedure for a multi-propulsor underwater robot

Pubblicato online: 29 Mar 2019
Pagine: 39 - 48

Astratto

Abstract

This article addresses the practical aspects of the synthesis of an automatic control system for the thrust allocation strategy in the propulsion system of an unmanned underwater vehicle. The vehicle under consideration is a robot submarine equipped with a multi-propulsion system providing four degrees of freedom of movement. The power distribution algorithms are based on limited optimisation methods that allow the determination, on the basis of generalised torques and forces, of how much thrust is required to be produced by individual propulsors. Considering the issue of power distribution as a task of square and linear programming, two algorithms of thrust allocation were proposed and compared. The conducted model tests made it possible to evaluate their quality and efficiency in relation to speed and computational complexity.

Parole chiave

  • underwater vehicle
  • propulsion system
  • power distribution
Accesso libero

Utilising a Skin Prick Test for the determination of the presence of allergic rhinitis in divers

Pubblicato online: 29 Mar 2019
Pagine: 49 - 54

Astratto

Abstract

Allergic rhinitis occurs in various regions of the world and affects from 10 to 40% of the population. The skin prick test is the “gold standard” for the detection of type I allergic diseases according to the Gella and Coombs classification, which is mediated by IgE. For our experiment, skin prick tests were performed on 60 divers aged between 30 and 40 years of age. The following tests for airborne allergens were used: tests for pollen from trees, grasses, cereals, weeds, proteins from house dust mites, animal hair and epidermis, and moulds. On the basis of an interview and a positive skin prick test allergic rhinitis was diagnosed in 17 divers.

Conclusions:

Allergic rhinitis can cause health problems in divers and be the cause of diving accidents.

The application of the skin prick test during the health qualification in the Military Maritime Health Commission, would allow the exclusion of diver candidates suffering from allergies.

Parole chiave

  • scuba diving
  • Skin Prick Test
  • allergic rhinitis
  • divers
Accesso libero

Scientific diving in natural sciences

Pubblicato online: 29 Mar 2019
Pagine: 55 - 62

Astratto

Abstract

Scientific diving is increasingly being used for numerous studies. Moreover, this form of diving allows for the conduction of interdisciplinary research. The current nomenclature of this type of dive is defined as scuba diving to collect information to support science by using diving techniques. Underwater research is particularly important in the natural sciences where it allows for the non-invasive observations of fauna and flora of aquatic ecosystems in their natural environment. At the same time, the use of diving for scientific purposes avoids mistakes made in random sampling, which is related to the use of classical sampling methods. As a result, such diving is crucial in systematic, ecological and behavioural analysis. Nevertheless, dive techniques, however versatile, require optimisation, separate study and systematisation, depending on the type of research conducted. This article is an attempt to present an outline of the topic, to systematise basic concepts in presenting the principles of legal regulations in Poland and abroad..

Parole chiave

  • scientific diving
  • professional diving
  • underwater works
  • equipment for underwater research
Accesso libero

Teaching communication for safety in selected water based recreational disciplines

Pubblicato online: 29 Mar 2019
Pagine: 63 - 78

Astratto

Abstract

This paper describes the concept of didactic communication and verifies the course of teaching selected disciplines of water based recreation, i.e. swimming (at the standard technique level), handling a sailing boat whilst undertaking simple manoeuvres, and the basics of diving. At the same time, research in the area of experiments conducted in the field of teaching methods of these disciplines was reviewed in terms of teaching effectiveness, as well as the health and safety of the participants, and ways of communicating while in, on and under the water. Communication between an instructor and a student in any environment which is different from the norm, is difficult owing to its specificity. Additionally, teaching skills on, in or under water requires strict observance of safety rules. Lack of student’s readiness to act in a different water environment, be that based on anxiety or fear, may interfere with or, even prevent didactic communication. Consequently, the effectiveness of teaching decreases. The aim of this work is to search for innovative forms of information transfer that will enable a permanent change in the student’s behaviour, especially when acting in a difficult environment – on the water, in the water and under the water. There are premises to believe that immediate verbal instruction and emphasising the metalinguistic function in it should improve the quality and effectiveness of the process of teaching activities in various water based environments.

Parole chiave

  • teaching
  • swimming
  • sailing
  • diving
  • immediate verbal information
  • important metalinguistic function
Accesso libero

The not obvious obviousness…

Pubblicato online: 29 Mar 2019
Pagine: 79 - 84

Astratto

Pianifica la tua conferenza remota con Sciendo