scholarly journals The Influence of Decontamination Mixture of ODS-4 on Chemical Resistance of the Garments for Body Surface Isolative Protection of the Czech Armed Forces Chemical Corps Specialists

2016 ◽  
Vol 22 (3) ◽  
pp. 654-661
Author(s):  
Zdeněk Melichařík ◽  
Pavel Otřísal ◽  
Stanislav Florus
Keyword(s):  
Body Surface ◽  
Chemical Resistance ◽  
Armed Forces ◽  
Butyl Rubber ◽  
Effective Protection ◽  
Current Time ◽  
Surface Protection ◽  
Protective Garment

Abstract Providing effective isolative protection of the Czech Armed Forces Chemical Corps’ specialist is long-term, developed and perspective problems. In current time established protective garments designated for hermetical body surface protection of the Czech Armed Forces Chemical Corps’ specialist are constructively solved with the employment of a mixture based on a butyl-rubber polymeric mixture both-sided coated on a polymeric fabric. Effective protection of a body surface has to be guaranteed for the whole time of usage of a protective garment, thus after performed repeated decontamination. The paper deals with influences of decontamination mixtures ODS-4 on the isolative protective foil used for production of anti-gas protective garment marked as OPCH-05 which is established as the garment for specialists’ body surface protection.

Specification of Destructive Influences of Selected Decontamination Mixtures on Materials Used for Construction of Chemical Specialists´ Garments Designated for Isolative Protection of the Body Surface

2018 ◽  
Vol 24 (3) ◽  
pp. 138-145
Author(s):  
Zdeněk Melichařík ◽  
Pavel Otřísal
Keyword(s):  
Body Surface ◽  
Armed Forces ◽  
Selective Decontamination ◽  
Butyl Rubber ◽  
The Body ◽  
Effective Protection ◽  
Materials Used ◽  
Protective Garment ◽  
Repeated Contact

Abstract A paper deals with the influence of selective decontamination mixtures established in the Czech Armed Forces on an isolative protective foil used to the construction of anti-gas protective garment marked as OPCH-05. Presented information are a part of thematically focused works aimed to study of influences of all established decontamination mixtures on the Czech Armed Forces Chemical Corps´ garments of anti-gas protection. The quality of provided the Czech Armed Forces Chemical Corps´ specialists isolative protection is limited with the existence of several aspects which significantly determine with their materials equipment. For providing isolative protection of the body surface are used such as protective garments which are the hermetic type and they are constructively solved with the employment of the butyl-rubber polymeric mixture. The effective protection of the body surface must be guaranteed even within the presumption of a repeated contact with decontamination mixtures

scholarly journals Chemical Resistance of Textile with a Butyl-Rubber Polymeric Mixture Against Decontamination Mixture on the Base of Chlorinated Aliphatic and Aromatic Hydrocarbons

2017 ◽  
Vol 23 (3) ◽  
pp. 234-242 ◽  
Author(s):  
Pavel Otřísal ◽  
Stanislav Florus ◽  
Zdeněk Melichařík
Keyword(s):  
Chemical Resistance ◽  
Chemical Properties ◽  
Chemical Compounds ◽  
Armed Forces ◽  
Butyl Rubber ◽  
Protective Equipment ◽  
Potential Influence ◽  
Barrier Material ◽  
Protective Properties ◽  
Aliphatic And Aromatic Hydrocarbons

Abstract Used equipment for providing hermetic isolative protection of the Czech Armed Forces Chemical Corps specialists’ body surface is currently solved with the employment of a mixture based on butyl-rubber. By producers declared protective properties of used barrier material does not mention a potential influence of decontamination mixtures and their components on the change of protective properties. A paper deals with selected chemical properties of butyl-rubber and points to the destructive influences of selected decontamination mixtures on protective textile used to production of isolative hermetic protective equipment. Study of barrier material chemical resistance against permeation of selected chemical compounds and mixtures creates the base presumption for evaluation of its usability.

The Heat Stress Effects on the Gases Permeability of the Isolative Type Garment of the Czech Armed Forces Chemical Corps Specialists Body Surface Protection

2019 ◽  
Vol 70 (5) ◽  
pp. 1597-1602
Author(s):  
Pavel Otrisal ◽  
Karel Friess ◽  
Lucia Feherova ◽  
Zdenek Melicharik ◽  
Lubomir Svorc ◽  
...  
Keyword(s):  
Body Surface ◽  
Structural Changes ◽  
Armed Forces ◽  
Gas Permeation ◽  
Scanning Calorimetry ◽  
Surface Protection ◽  
Barrier Materials ◽  
Stress Effects ◽  
Optical Profilometer ◽  
Materials Used

In our research, both theoretical and practical approaches to the assessment of permeability of barrier materials used to produce protective garments of an isolative type designed for body surface protection have been studied. The main goal of this paper is to study the thermal resistance for a barrier material of the ventilated anti-gas isolative garment OPCH-05 which is used in the conditions of the Czech Armed Forces for the Chemical Corps specialists� protection against the effects of toxic compounds. The thermal analysis of samples was performed using the differential scanning calorimetry, the surface structural changes were determined via the 3D optical profilometer and the gas permeation measurements were performed by means of the integral permeation method. Based on permeation results, the appropriate time limits and the temperatures of the exposure, during which the chemical protective garment could be securely used, were evaluated.

Employment of Simulants for Testing Constructive Materials Designed for Body Surface Isolative Protection in Relation to Chemical Warfare Agents

2018 ◽  
Vol 69 (2) ◽  
pp. 300-304 ◽  
Author(s):  
Pavel Otrisal ◽  
Stanislav Florus ◽  
Ghita Barsan ◽  
Danut Mosteanu
Keyword(s):  
Body Surface ◽  
Chemical Compound ◽  
Chemical Resistance ◽  
Sulfur Mustard ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Toxic Compounds ◽  
Surface Protection ◽  
Standard Testing ◽  
Warfare Agents

Employment of simulants, thus spare testing compounds always takes the bigger value in the area of testing garments designated for body surface protection against the effects of chemical warfare agents. The aim of simulants usage is mainly to remove problems related to manipulation with high toxic compounds and to enable testing to such working places that have not got the permission for the treatment with chemical warfare agents and other highly toxic compounds. The paper summarizes some achieved results of measurements of chemical resistance which have been performed based on simulants. These results are put into mutual connection with the sulfur mustard which is recently used as a standard testing chemical compound.

scholarly journals Study of the Change of the Specialists' Isolative Garment Properties Against the Effects of Peroxide Decontamination Mixture

2019 ◽  
Vol 25 (3) ◽  
pp. 126-135
Author(s):  
Zdeněk Melichařík ◽  
Pavel Otřísal
Keyword(s):  
Polymeric Material ◽  
Direct Contact ◽  
Armed Forces ◽  
Butyl Rubber ◽  
Barrier Material ◽  
Protective Properties ◽  
Polyamide Textile ◽  
Protective Garment

AbstractThe influence of the peroxide decontamination mixture on the barrier polymeric material used for the construction of the anti-gas protective garment OPCH-05 has been study. This kind of mixture is used with the help of the decontamination vehicle ACHR-90 and its EDS mixture. The both soldiers and operators of the ACHR-90 or the EDS mixture can be in a direct contact with spattering decontamination mixture that can cause significant damages of the anti-gas protective garment OPCH-05. For evaluation of protective properties and their potential changes the MIKROTEST method and methodology has been used. This paper is another publication which deals with the influences of decontamination mixtures introduced in the Czech Armed Forces Chemical Corps armament on the barrier material composed of the butyl-rubber polymeric mixture in combination with the polyamide textile.

MODERN PROBLEMATICS AND ANALYSIS OF EFFICIENCY OF APPLICATION OF DIFFERENT APPROACHES TO DESTRUCTION OF INFORMATION ON MAGNETIC MEDIA

2019 ◽  
Vol 2 (12) ◽  
pp. 154-164
Author(s):  
O. Semenenko ◽  
O. Vodchyts ◽  
V. Koverga ◽  
R. Lukash ◽  
O. Lutsenko
Keyword(s):  
Armed Forces ◽  
Information Storage ◽  
Storage Device ◽  
Magnetic Media ◽  
Long Term Storage ◽  
Physical Impact ◽  
And Storage ◽  
Term Storage

The introduction and active use of information transmission and storage systems in the Ministry of Defense (MoD) of Ukraine form the need to develop ways of guaranteed removal of data from media after their use or long-term storage. Such a task is an essential component of the functioning of any information security system. The article analyzes the problems of guaranteed destruction of information on magnetic media. An overview of approaches to the guaranteed destruction of information on magnetic media of different types is presented, and partial estimates of the effectiveness of their application are given by some generally accepted indicators of performance evaluation. The article also describes the classification of methods of destruction of information depending on the influence on its medium. The results of the analysis revealed the main problems of application of software methods and methods of demagnetization of the information carrier. The issue of guaranteed destruction of information from modern SSD devices, which are actively used in the formation of new systems of information accumulation and processing, became particularly relevant in the article. In today's conditions of development of the Armed Forces of Ukraine, methods of mechanical and thermal destruction are more commonly used today. In the medium term, the vector of the use of information elimination methods will change towards the methods of physical impact by the pulsed magnetic field and the software methods that allow to store the information storage device, but this today requires specialists to develop new ways of protecting information in order to avoid its leakage.

scholarly journals Defence Medical Rehabilitation Centre (DMRC) COVID-19 Recovery Service

2021 ◽  
pp. e001681
Author(s):  
Oliver O'Sullivan ◽  
R Barker-Davies ◽  
R Chamley ◽  
E Sellon ◽  
D Jenkins ◽  
...  
Keyword(s):  
Occupational Medicine ◽  
Armed Forces ◽  
Acute Illness ◽  
Medical Rehabilitation ◽  
Rehabilitation Centre ◽  
Operational Effectiveness ◽  
Mortality And Morbidity ◽  
Recovery Service ◽  
Significant Mortality

Coronavirus disease 2019 (COVID-19) causes significant mortality and morbidity, with an unknown impact in the medium to long term. Evidence from previous coronavirus epidemics indicates that there is likely to be a substantial burden of disease, potentially even in those with a mild acute illness. The clinical and occupational effects of COVID-19 are likely to impact on the operational effectiveness of the Armed Forces. Collaboration between Defence Primary Healthcare, Defence Secondary Healthcare, Defence Rehabilitation and Defence Occupational Medicine resulted in the Defence Medical Rehabilitation Centre COVID-19 Recovery Service (DCRS). This integrated clinical and occupational pathway uses cardiopulmonary assessment as a cornerstone to identify, diagnose and manage post-COVID-19 pathology.

Repeated Occupational Exposure to Low-level Blast in the Canadian Armed Forces: Effects on Hearing, Balance, and Ataxia

2021 ◽  
Author(s):  
Ann Nakashima ◽  
Oshin Vartanian ◽  
Shawn G Rhind ◽  
Kristen King ◽  
Catherine Tenn ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Occupational Exposure ◽  
Armed Forces ◽  
Cross Sectional ◽  
Low Level ◽  
Additional Information ◽  
Adverse Health Effects ◽  
Blast Overpressure ◽  
Blast Exposure

ABSTRACT Introduction Recently, there has been increasing concern about the adverse health effects of long-term occupational exposure to low-level blast in military personnel. Occupational blast exposure occurs routinely in garrison through use of armaments and controlled blast detonations. In the current study, we focused on a population of breaching instructors and range staff. Breaching is a tactical technique that is used to gain entry into closed spaces, often through the use of explosives. Materials and Methods Initial measurements of blast overpressure collected during breaching courses found that up to 10% of the blasts for range staff and up to 32% of the blasts for instructors exceeded the recommended 3 psi exposure limit. Using a cross-sectional design, we used tests of balance, ataxia, and hearing to compare a sample of breachers (n = 19) to age-and sex-matched military controls (n = 19). Results There were no significant differences between the two groups on the balance and ataxia tests, although the average scores of both groups were lower than would be expected in a normative population. The prevalence of hearing loss was low in the breacher group (4 of 19), and hearing thresholds were not significantly different from the controls. However, the prevalence of self-reported tinnitus was significantly higher in the breacher group (12 of 19) compared with the controls (4 of 19), and all breachers who were identified as having hearing loss also reported tinnitus. Conclusions Our results suggest that basic tests of balance, ataxia, and hearing on their own were not sensitive to the effects of long-term occupational exposure to low-level blast. Some of the blast exposure levels exceeded limits, and there was a significant association of exposure with tinnitus. Future studies should supplement with additional information including exposure history and functional hearing assessments. These findings should be considered in the design of future acute and longitudinal studies of low-level blast exposure.

Demobilisation will be a long-term challenge in Libya

2021 ◽  
Keyword(s):  
Oil And Gas ◽  
Armed Forces ◽  
Armed Groups ◽  
Content Type ◽  
Near Term ◽  
The Many ◽  
Financial Arrangements

Significance Although a ceasefire has been in place since October 2020, very little has been done during that time to integrate or demobilise the many armed forces and groups that exist across the country. The obstacles are formidable. Impacts Significant demobilisation and reintegration will not happen in the near term. Local security will continue to rest on fragile political and financial arrangements between armed groups and governing authorities. The current high levels of oil and gas revenue will tend to discourage unrest.

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