scholarly journals Numerical Analysis of the Risk of Neck Injuries Caused By IED Explosion under the Vehicle in Military Environments

2016 ◽  
Vol 10 (4) ◽  
pp. 258-264 ◽  
Author(s):  
Agnieszka Mackiewicz ◽  
Grzegorz Sławiński ◽  
Tadeusz Niezgoda ◽  
Romuald Będziński
Keyword(s):  
Complex Analysis ◽  
The Body ◽  
Cervical Spine Injuries ◽  
Improvised Explosive Device ◽  
Military Vehicle ◽  
Hybrid Iii ◽  
Variable Displacement ◽  
Improvised Explosive ◽  
The Military ◽  
The Impact

Abstract As a result of an explosion under a military vehicle, the risk of threat to life and health of the crew increases. Examination of this event in terms of the security of soldiers comes down to a complex analysis of the mutual interaction of the body of a soldier, seating and structural elements of the vehicle. As a result, shock wave impacts can cause tremor resulting from the construction of the vehicle and acceleration of the passenger's body. This study attempts to analyze the impact of an explosion of an improvised explosive device (IED) under the military vehicle with the risk of cervical spine injuries of soldiers. The analysis was carried out using numerical methods in the LS-DYNA program and was carried out taking into account the variable displacement values and acceleration recorded during the\ explosion. The study used a model of the body of a soldier in the form of a Hybrid III 50th Male Dummy.

scholarly journals Opinions on the Contribution of the Bio-Psycho-Physical Component in Military Confrontations Carried Out in Extreme Conditions

2021 ◽  
Vol 27 (2) ◽  
pp. 213-218
Author(s):  
Robert Stănciulescu ◽  
Lucian Tarnu
Keyword(s):  
Training System ◽  
The Body ◽  
Mental Training ◽  
Continuous Training ◽  
Military Organization ◽  
Complex Training ◽  
High Level ◽  
Physical Features ◽  
The Military ◽  
The Impact

Abstract The adaptation of the fighter to the combat situations within the different missions, as well as the need to face any request coming up during the confrontations, imposes an extremely complex training system. Having an essential role in combat, the fighter must acquire qualities both in terms of mental, biological and physical features. Due to the threats that hang over the fighters at any time in this type of conflicts, the emphasis in their training is aimed at training in conditions as close to the existing reality as possible, with a focus on the impact that the battlefield has on his psyche and physique, so that at the same time he can adapt his systems of action of the body to the requirements of any nature imposed by each mission. The paper highlights that the process of training this type of fighters includes, among the training pillars, physical and mental training as a support for exceptional training and effective exercise of roles and missions entrusted to the military organization in peacetime, in situations of crisis and especially at war. In the economics of the formative process, physical and mental training represents the essence of a high level of acquiring the qualities specific to the successful conduct of combat, a fact for which their development has been and will always remain a priority objective throughout the continuous training of fighters.

scholarly journals Experimental Investigations Regarding the Behaviour of Composite Panels Based on Polyurea and Kevlar or Dyneema Layers Under Blast and Fragments

2019 ◽  
Vol 56 (3) ◽  
pp. 538-542
Author(s):  
Bogdan Iftimie ◽  
Marin Lupoae ◽  
Octavian Orban
Keyword(s):  
Composite Panel ◽  
Experimental Investigations ◽  
Composite Panels ◽  
Improvised Explosive Device ◽  
Good Ability ◽  
Before And After ◽  
Plastic Explosive ◽  
Explosive Device ◽  
Improvised Explosive ◽  
The Impact

This paper presents an experimental study to determine the behaviour of composite panels, made of polyurea sprayed on Kevlar or Dyneema support layers, under blast and fragments produced by an improvised explosive device (IED). The fragments used for tests were steel bearing balls of 8 and 10 mm propelled by a plastic explosive charge and bullets cal. 7.62 mm, type Full Metal Jacketed Armor Piercing (FMJ AP) and Hollow Point Boat Tail (HPBT), with impact velocity greater than 500 m/s. To determine the fragments attenuation, their velocities before and after the impact with the composite panel were measured and compared. In order to assess the blast attenuation, the reflected pressures measured by two face-on sensors, one of which was covered by the composite panel, were compared. Also, to explain the behaviour of composite panels under blast, the shock polars of materials in the panel�s composition were plotted. The results have shown that the composite panels have a low rate of attenuation of fragment velocities but a very good ability to attenuate the pressure and impulse associated with the shock wave.

scholarly journals Protection of Occupants Military Vehicles Against Mine Threats and Improvised Explosive Devices (IED) / Ochrona Załogi Pojazdu Wojskowego Przed Wybuchem Min i Improwizowanych Urządzeń Wybuchowych (IED)

2015 ◽  
Vol 33 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Grzegorz Sławiński ◽  
Tadeusz Niezgoda
Keyword(s):  
Wave Interaction ◽  
Computer Code ◽  
Spine Injury ◽  
Coupled Analysis ◽  
Car Seat ◽  
Military Vehicles ◽  
Military Vehicle ◽  
Improvised Explosive ◽  
Explosive Devices ◽  
The Military

Abstract Risk of danger for military vehicle crew life and health increases when explosion under vehicle appears. Consideration of this phenomenon in the aspect of soldiers safety is based on coupled analysis of soldier’s body, car seat and vehicle construction elements. As the effect of blast wave interaction the vibrations of construction and passanger body acceleration appear. In the paper the analysis of improvised explosive device (IED) detonation under the military vehicle was carried out in the aspect of soldier neck spine injury. The analysis was made with the usage of numerical methods in LS Dyna computer code and considered the changeble values of displacement and acceleration registered during detonation.

scholarly journals The Impact of Health-Conscious Eating in Improving Physical Performance in Military Physical Training

2018 ◽  
Vol 24 (2) ◽  
pp. 410-415
Author(s):  
Robert Stănciulescu ◽  
Elvira Beldiman
Keyword(s):  
Physical Performance ◽  
Physical Training ◽  
The Body ◽  
Mental Skills ◽  
Intensive Training ◽  
Military Conflicts ◽  
The Military ◽  
The Impact

Abstract Military conflicts throughout history, as well as in recent times have demanded fighters to possess a complex set of physical and mental skills meant to ensure the foundation of efficiency and functionality, an objective to be attained through a process of intensive training, which many times exerts the body to the extreme. In order to meet these requirements, the military have to adopt a proper sports lifestyle characterized by a health-conscious eating

Energy intake and expenditure of improvised explosive device detection dogs

2015 ◽  
Vol 11 (4) ◽  
pp. 249-254 ◽  
Author(s):  
S. Pratt Phillips ◽  
J. Kutzner-Mulligan ◽  
M. Davis
Keyword(s):  
Energy Expenditure ◽  
Energy Intake ◽  
The Body ◽  
Metabolic Energy ◽  
Energy Requirements ◽  
Doubly Labelled Water ◽  
Improvised Explosive Device ◽  
Working Dogs ◽  
Explosive Device ◽  
Improvised Explosive

Improvised explosive device detection (IDD) dogs explore up to 40 km of land daily and therefore have energetic demands that may be above the National Research Council’s requirement for working dogs. This study was designed to quantify metabolic energy intake (MEI) and total energy expenditure (TEE) in a group of IDD dogs. Two groups of dogs that had undergone different training protocols (CP1, n=8 and CP2, n=11) underwent a 5-day deployment simulation that consisted of combined road clearing, orbit and point-to-point activities and lasted approximately 9 h per day. The CP1 dogs were fed according to the IDD Marine Corps Manual, while CP2 dogs were offered additional calories based on pilot study data of energy expenditure. The MEI was calculated based on feed intake rates and chemical composition of the diets. TEE was quantified using the doubly-labelled water technique in 2 of the CP1 dogs and 7 of the CP2 dogs. During the 5-day deployment simulation the MEI ranged from 189-310 kcal/bodyweight (BW)0.75 per day, with the CP2 dogs at the higher end because they were offered more feed. The TEE ranged between 375-507 kcal/BW0.75 per day, above the MEI, suggesting the dogs were in negative energy balance and metabolic reserves within the body were combusted for energy production. These findings reveal that energy requirements of deployed military working dogs are higher than previously published metabolic energy requirements of working dogs.

The Impact of Shariah Governance and Corporate Governance on the Risk Management Practices: Evidence from Local and Foreign Islamic Banks in Malaysia

2018 ◽  
Vol 15 (2) ◽  
pp. 1-20
Author(s):  
Sabri Embi ◽  
Zurina Shafii
Keyword(s):  
Risk Management ◽  
Corporate Governance ◽  
Management Practices ◽  
Principal Component ◽  
T Test ◽  
The Body ◽  
Primary Data ◽  
Islamic Banks ◽  
Shariah Governance ◽  
The Impact

The purpose of this study is to examine the impact of Shariah governance and corporate governance (CG) on the risk management practices (RMPs) of local Islamic banks and foreign Islamic banks operating in Malaysia. The Shariah governance comprises the Shariah review (SR) and Shariah audit (SA) variables. The study also evaluates the level of RMPs, CG, SR, and SA between these two type of banks. With the aid of SPSS version 20, the items for RMPs, CG, SR, and SA were subjected to principal component analysis (PCA). From the PCA, one component or factor was extracted each for the CG, SR, and RMPs while another two factors were extracted for the SA. Primary data was collected using a self-administered survey questionnaire. The questionnaire covers four aspects ; CG, SR, SA, and RMPs. The data received from the 300 usable questionnaires were subjected to correlation and regression analyses as well as an independent t-test. The result of correlation analysis shows that all the four variables have large positive correlations with each other indicating a strong and significant relationship between them. From the regression analysis undertaken, CG, SR, and SA together explained 52.3 percent of the RMPs and CG emerged as the most influential variable that impacts the RMPs. The independent t-test carried out shows that there were significant differences in the CG and SA between the local and foreign Islamic banks. However, there were no significant differences between the two types of the bank in relation to SR and RMPs. The study has contributed to the body of knowledge and is beneficial to academicians, industry players, regulators, and other stakeholders.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

Comparative assessment of morphological mechanisms of maintaining structural liver homeostasis in the dynamics of exposure to coal-rock dust and sodium fluoride on the body

2020 ◽  
pp. 189-194
Author(s):  
M. S. Bugaeva ◽  
O. I. Bondarev ◽  
N. N. Mikhailova ◽  
L. G. Gorokhova
Keyword(s):  
Sodium Fluoride ◽  
Morphological Changes ◽  
The Body ◽  
System Level ◽  
Production Factor ◽  
Coal Rock ◽  
The Impact ◽  
Structural Homeostasis ◽  
Rock Dust

Introduction. The impact on the body of such factors of the production environment as coal-rock dust and fluorine compounds leads to certain shift s in strict indicators of homeostasis at the system level. Maintaining the relative constancy of the internal environment of the body is provided by the functional consistency of all organs and systems, the leading of which is the liver. Organ repair plays a crucial role in restoring the structure of genetic material and maintaining normal cell viability. When this mechanism is damaged, the compensatory capabilities of the organ are disrupted, homeostasis is disrupted at the cellular and organizational levels, and the development of the main pathological processes is noted.The aim of the study is to compare the morphological mechanisms of maintaining structural homeostasis of the liver in the dynamics of the impact on the body of coal-rock dust and sodium fluoride.Materials and methods. Experimental studies were conducted on adult white male laboratory rats. Features of morphological mechanisms for maintaining structural homeostasis of the liver in the dynamics of exposure to coal-rock dust and sodium fluoride were studied on experimental models of pneumoconiosis and fluoride intoxication. For histological examination in experimental animals, liver sampling was performed after 1, 3, 6, 9, 12 weeks of the experiment.Results. The specificity of morphological changes in the liver depending on the harmful production factor was revealed. It is shown that chronic exposure to coal-rock dust and sodium fluoride is characterized by the development of similar morphological changes in the liver and its vessels from the predominance of the initial compensatory-adaptive to pronounced violations of the stromal and parenchymal components. Long-term inhalation of coal-rock dust at 1–3 weeks of seeding triggers adaptive mechanisms in the liver in the form of increased functional activity of cells, formation of double-core hepatocytes, activation of immunocompetent cells and endotheliocytes, ensuring the preservation of the parenchyma and the general morphostructure of the organ until the 12th week of the experiment. Exposure to sodium fluoride leads to early disruption of liver compensatory mechanisms and the development of dystrophic changes in the parenchyma with the formation of necrosis foci as early as the 6th week of the experiment.Conclusions. The study of mechanisms for compensating the liver structure in conditions of long-term exposure to coal-rock dust and sodium fluoride, as well as processes that indicate their failure, and the timing of their occurrence, is of theoretical and practical importance for developing recommendations for the timely prevention and correction of pathological conditions developing in employees of the aluminum and coal industry.The authors declare no conflict of interests.

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