Academic literature on the topic 'Air pistol'

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Journal articles on the topic "Air pistol"

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Petrashev, Alexander, and Viktor Klepikov. "RESULTS OF THE STUDY OF PNEUMATIC EJECTOR GUNS FOR USE IN THE PROTECTION OF AGRICULTURAL MACHINES." SCIENCE IN THE CENTRAL RUSSIA, no. 5 (October 31, 2022): 7–19. http://dx.doi.org/10.35887/2305-2538-2022-5-7-19.

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Ejector pneumatic pistols such as the GAV-167 and Voylet PS-5 used for the application of anticorrosive materials with large fillers. Pneumatic pistols have a receiving chamber for material input, an ejector with an air nozzle, a mixing chamber and a spray nozzle. When compressed air supplied through the ejector, a vacuum created in the receiving chamber. The research found that the vacuum pressure in the receiving chamber increased with an increase in the spray pressure, the size of the spray nozzle and a decrease in the length of the receiving chamber. The process of spraying technical liqui
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Singh, Harpreet KSI, Emily Cribb, Ajit Bains, and Nikhil Pawa. "Colorectal cancer and an air pistol pellet." British Journal of Hospital Medicine 80, no. 10 (2019): i. http://dx.doi.org/10.12968/hmed.2019.80.10.i.

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Gorgulu, Recep. "An Examination of Ironic Effects in Air-Pistol Shooting under Pressure." Journal of Functional Morphology and Kinesiology 4, no. 2 (2019): 20. http://dx.doi.org/10.3390/jfmk4020020.

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This study aimed to test the incidence of ironic performance errors in elite air-pistol shooters. Previous research has revealed that, when shooters are anxious, avoidant instructions can cause ironic performance breakdown, especially in the unintended direction. Fifty-seven experienced air-pistol shooters were given specific instructions not to shoot to a certain part of a target, under low- and high-anxiety conditions, respectively. Results demonstrated that, when instructed not to shoot in a specific direction, anxious shooters did so a significant number of times. Interestingly, there was
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Mon-López, Daniel, Maria S. Zakynthinaki, Carlos Alberto Cordente, and Jorge García-González. "The Relationship Between Pistol Olympic Shooting Performance, Handgrip and Shoulder Abduction Strength." Journal of Human Kinetics 69, no. 1 (2019): 39–46. http://dx.doi.org/10.2478/hukin-2019-0009.

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Abstract The ability to stabilize the gun, a crucial factor for performance in air pistol Olympic shooting, is thought to be strongly related to the muscular work of the shooter´s shoulder and forearm. The objective of the present study was to confirm this relationship by analysing the influence of maximal finger flexor forces and maximal isometric shoulder force on performance in female air pistol shooting. Twenty‐three female pistol shooters participated in the study. Handgrip and shoulder force data were recorded under competition conditions, during the official training time of national Sp
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Heshmati, Safoura, Hassan Daneshmandi, and Seyyed Hossein Hosseini. "A Comparison Study on the Electrical Activity of Arm Abduction Muscles During Shoulder Abduction and Scaption Between Shooting Disciplines." Journal of Sport Biomechanics 5, no. 4 (2020): 250–61. http://dx.doi.org/10.32598/biomechanics.5.4.5.

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Objective: Considering the positions that the shooter chooses during shooting in different disciplines, it seems that the activity of deltoid and supraspinatus muscles which are common muscles during movement, varies in different disciplines. Therefore, the purpose of the present study was to evaluate and compare the electrical activity of deltoid and supraspinatus muscles between three shooting disciplines. Methods: 24 shooters (8 archers, 8 air pistol shooters, and 8 air rifle shooters) participated in the study. They performed shoulder abduction and scaption at 60 and 90 degrees. The electr
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Olsson, Erik, and Marko S. Laaksonen. "Key technical components for air pistol shooting performance." International Journal of Performance Analysis in Sport 21, no. 3 (2021): 348–60. http://dx.doi.org/10.1080/24748668.2021.1891820.

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Campbell-Hewson, G. L., A. D'Amore, and A. Busuttil. "1. Non-Accidental Injury Inflicted on a Child with an Air Weapon." Medicine, Science and the Law 38, no. 2 (1998): 173–76. http://dx.doi.org/10.1177/002580249803800217.

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A case of non-accidental injury to an infant caused by the discharge of an air pistol is presented, the first such case to be reported. A two-month-old baby was shot at close range by his father with a ***.177 air pistol. A false account of the cause of the injury was given by the father and initially supported by the mother. The pellet penetrated the skin in the centre of the child's forehead and lodged in the anterior wall of the sagittal sinus. It was removed under general anaesthetic and the child made an uncomplicated recovery. The father was subsequently convicted and jailed for the assa
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Kolomeychenko, Aleksandr, Aleksandr Gorlenko, Vladimir Logachev, and Nikolay Vladimirovich Titov. "EQUIPMENT AND TECHNOLOGICAL RECOMMENTIONS FOR COATING WITH THERMAL SPRAYING." Transport engineering 2022, no. 4 (2022): 44–50. http://dx.doi.org/10.30987/2782-5957-2022-4-44-50.

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The study objective is to optimize the spraying distance on supersonic arc spraying pistols, which have a number of advantages in comparison with pre-sonic spraying pistols and are widely used at present in machine-building and repair production, in repair shops of agricultural organizations and farms. 
 The problem to which the paper is devoted is to determine the spraying distance, where the maximum air flow velocity is reached in supersonic and subsonic coating modes. 
 The novelty of the work is in finding rational values of the spraying distance, at which the best physical and m
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White, S. A., and A. A. Narula. "A Complication of indoor pistol shooting." Journal of Laryngology & Otology 110, no. 7 (1996): 663–64. http://dx.doi.org/10.1017/s0022215100134541.

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AbstractThe aetiology of chronic rhinitis and nasal obstruction is often elusive and obscure. Many different causes have been documented including allergens, cigarette smoke, cold dry air, viruses, sulphur dioxide and industrial pollutants. This is the first case we have been able to identify of rhinitis associated with exposure to high levels of lead through indoor pistol shooting.
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Vardar, Tonguç, and Fatih Senduran. "The Quiet Eye durations of air pistol shooting athletes." Pakistan Journal of Medical and Health Sciences 15, no. 7 (2021): 2246–52. http://dx.doi.org/10.53350/pjmhs211572246.

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Background: The Focusing the attention during the preparation period undergone immediately before carrying out a motor performance is vitally important for success. Visual ability, Quiet Eye and focusing the attention on the appropriate area play a critical role in achieving successful performance in branches of sport. Quiet eye (QE) is defined as the final fixation of the pupil on a location or object for a specific motor task. Aim: The aim of this study was to examine the durations of effective and final focusing (quiet eye) carried out during the process of taking aim at the target by air p
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Dissertations / Theses on the topic "Air pistol"

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Hamzah, Noor Hazfalinda. "Development of an objective method for the comparison of fired projectiles using an air pistol as a template." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28488.

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The ability to objectify ballistic evidence is a challenge faced by firearms examiners around the world. A number of researchers are trying to improve bullet-identification systems to address the deficiencies in this regard and which were detailed within the National Academy of Sciences report (2009). Bullet to bullet comparisons have largely relied on the supposition that the rifling marks within the barrel of a weapon have class characteristics that identify a weapon type and individual characteristics that identify a specific weapon. Such characteristics are impressed onto projectiles when
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Willcock, M. "The effect of piston design on hydrocarbon emissions in a spark ignited engine." Thesis, Sheffield Hallam University, 1993. http://shura.shu.ac.uk/20539/.

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This thesis describes an investigation into the effect of piston design on hydrocarbon emissions from an spark ignited engine. The experimental investigation tested a series of three piston configurations against a standard design based on production dimensions. These tests examined the effect of top and 2nd land crevice volumes and absorption and desorption from lubricant on the cylinder liner as sources of hydrocarbon emissions. The operational conditions were steady state for all engine parameters. The work was performed on a modern four cylinder 16 valve engine with multi point fuel inject
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Wang, Yuan S. M. Massachusetts Institute of Technology. "Air flow effects in the piston ring pack and their implications on oil transport." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76826.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2012.<br>This thesis was scanned as part of an electronic thesis pilot project.<br>Cataloged from PDF version of thesis. This thesis was scanned as part of an electronic thesis pilot project.<br>Includes bibliographical references (p. 85).<br>3 different flow regimes of piston blowby air and their influences on oil transport are studied. It is found that air mainly interacts with oil close to the ring gaps and directly below the ring-liner contacts. Geometric features at the gaps to smoothen airflow an
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Hedrich, Philipp, Maik Johe, and Peter F. Pelz. "Design and Realization of an Adjustable Fluid Powered Piston for an Active Air Spring." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199924.

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In this paper, we present a new compact hydraulic linear actuator. The concept is developed to change the rolling piston diameter of an active air spring during usage. By doing so, the air spring can actively apply pressure and tension forces. The actuator is designed for small movements at high forces. It is insensitive to side forces, which are introduced by the bellows rolling on the rolling piston of the air spring. A diaphragm sealing is used to minimize friction. Hence a precise adjustment of small displacements at high dynamics is possible and the system is completely leakage-free. We d
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Fonseca, Aline Alves. "Pistas prosódicas e o processamento de sentenças ambíguas do tipo "SN1-V-SN2-Atributo" do Português Brasileiro." Universidade Federal de Minas Gerais, 2008. http://hdl.handle.net/1843/AIRR-7DGNEQ.

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This dissertation arose from questions about the ambiguity in syntactic constructions like NP1-V-NP2-attribute as in The boy hugged the friend sweating (O rapaz abraçou o amigo suado), which can happen in Brazilian Portuguese. When this ambiguity occurs it refers to the syntactically ambiguous attachment of attribute, which can be locally attached to NP2 or non-locally to NP1. Two principles lead the parser in the sentence processing: Late Closure and Minimal Attachment. The Late Closure principle is applied to the above-mentioned construction in which the local attachment is considered defaul
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Nadeem, Tariq. "Computer simulation of the steady-state thermodynamic processes and piston ring wear for a multi-stage intercooled reciprocating air compressor." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43257.

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The objectives of this research are the prediction of the thermodynamic behavior of a multi-stage intercooled reciprocating compressor and its progressive loss of performance due to leakage. A theoretical model is developed to simulate the thermodynamics of the compressor system and the lubricating condition and wear of the piston ring pack for a multi-stage intercooled reciprocating compressor. A first law of thermodynamics approach is used to determine the thermodynamic properties of the gas inside the cylinders, the intercoolers and the inlet and discharge manifold. The compressor valves ar
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Moreira, Rafael da Silveira [UNESP]. "Comparação da viabilidade técnica-econômica em condicionamento de ar: compressor a pistão versus compressor rotativo de velocidade variável." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/99341.

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Made available in DSpace on 2014-06-11T19:30:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-07-07Bitstream added on 2014-06-13T20:39:48Z : No. of bitstreams: 1 moreira_rs_me_guara.pdf: 1015481 bytes, checksum: 6083704ea441f414182fe9b27a70777b (MD5)<br>Eletrobras<br>Neste estudo são apresentados os resultados de um trabalho realizado em uma bancada de testes, onde se constatou a diferença de potência elétrica de acionamento e do coeficiente de performance no funcionamento de dois diferentes tipos de compressores: um hermético a pistão e outro rotativo do tipo scroll, operando com i
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Moreira, Rafael da Silveira. "Comparação da viabilidade técnica-econômica em condicionamento de ar: compressor a pistão versus compressor rotativo de velocidade variável /." Guaratinguetá : [s.n.], 2009. http://hdl.handle.net/11449/99341.

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Resumo: Neste estudo são apresentados os resultados de um trabalho realizado em uma bancada de testes, onde se constatou a diferença de potência elétrica de acionamento e do coeficiente de performance no funcionamento de dois diferentes tipos de compressores: um hermético a pistão e outro rotativo do tipo scroll, operando com inversor de frequência. No estudo variou-se a vazão do fluido refrigerante, e consequentemente o efeito frigorífico, por dois procedimentos distintos: restrição da passagem do refrigerante através de uma válvula de estrangulamento, mantendo-se a rotação do compressor a pi
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Ndame, Ngangue Max Keller. "Etude théorique, conception, réalisation et essai préliminaire d'un moteur à air chaud à pistons liquides." Thesis, Pau, 2019. http://www.theses.fr/2019PAUU3004/document.

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Un moteur Ericsson est un moteur alternatif à apport de chaleur externe fonctionnant selon un cyclethermodynamique de Joule. Ce type de moteur est particulièrement intéressant pour la valorisationde certaines "sources chaudes" (l'énergie solaire, la biomasse, les effluents gazeux chauds...).Dans cette thèse, une configuration innovante de moteur est proposée. Celle-ci permet d'une part,de s’affranchir du problème d’étanchéité autour des pistons des moteurs Ericsson, par l'usage despistons liquides en lieu et place des pistons mécaniques et d'autre part, de simplifier le système dedistribution
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Dib, Ghady. "Thermodynamic simulation of compressed air energy storage systems." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI092.

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Le développement des énergies renouvelables pose la question du stockage de l’énergie électrique. L’utilisation du stockage par air comprimé semble une solution prometteuse dans le domaine du stockage d'énergie : elle se caractérise par une grande fiabilité, un faible impact environnemental et une remarquable densité énergétique stockée (kWh/m3). Jusqu’à présent, l'air comprimé a été utilisé dans de nombreux domaines comme vecteur d’énergie pour stocker différentes formes d'énergies (transport routier, poste pneumatique, plongée sous-marine). Néanmoins, actuellement de nombreux chercheurs se c
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Books on the topic "Air pistol"

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Abdi, M. Nahdiansyah. Parodi tentang orang yang ingin bunuh diri dengan pistol air. Tahura Media, 2008.

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Wesley, L. Air-guns and air-pistols. Cardew Publications, 1987.

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National Rifle Association of America. Education and Training Division., ed. Air guns: A guide to air pistols and rifles. Education and Training Division, National Rifle Association of America, 1991.

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Long, Duncan. Making your AR-15 into a legal pistol. Paladin Press, 1991.

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Albert, Restoin, and Conseil scientifique des Francas, eds. Eduquer pour demain: Des pistes pour agir. L'Harmattan, 2004.

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United States. Environmental Protection Agency. Office of Transportation and Air Quality. Advance notice of proposed rulemaking on lead emissions from piston-engine aircraft using leaded aviation gasoline. U.S. Environmental Protection Agency, Office of Transportation and Air Quality, 2010.

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Sweeney, Patrick. Gunsmithing the AR-15: How to maintain, repair, accessorize. Gun Digest Books, 2010.

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Catarsi, Enzo, ed. The Very Hungry Caterpillar in Tuscany. Firenze University Press, 2013. http://dx.doi.org/10.36253/978-88-6655-326-7.

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The volume publishes some essays illustrating experiences which attempted to promote reading with very young children in nurseries and infant schools, as part of a project on the picture books by Eric Carle, a well-known American illustrator of children's books. In particular, this initiative took place during the 2009-2010 and 2010-2011 school years, in a large number of nurseries and infant schools in some areas of Tuscany (Pistoia, Firenze, Grosseto, Livorno, Lucca, Viareggio, and the Empolese area). The main aim of the project, carried out as action-research, was to present the books of Er
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Office, General Accounting. Procurement: Spare parts and support equipment for Air Force C-5 transport aircraft : briefing report to the chairman, Subcommittee on Oversight and Investigations, Committee on Energy and Commerce, House of Representatives. The Office, 1988.

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Office, General Accounting. Procurement: State Department's purchase of silverware for overseas missions : report to the chairman, Legislation and National Security Subcommittee, Committee on Government Operations, House of Representatives. The Office, 1987.

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Book chapters on the topic "Air pistol"

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Decher, Reiner. "The Compressor: Gas Turbine Engine Keystone." In The Vortex and The Jet. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8028-1_10.

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AbstractAll engines involve the raising of pressure in the engine’s medium, be it liquid compression of water, piston-cylinder compression of air or compression by aerodynamic forces. The last is the hardest because it is required to be efficient and stable. An aerodynamic air compressor works by slowing velocities to raise pressure. The airfoil has a difficult time doing this reliably and well and so does the compressor. When it does, it allows for amazing performance of the engine in terms of power and efficiency.
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Shah, Qayyum. "Analysis of Hugging Flow Through the Powerful Technique of Homotopy Asymptotic Method (HAM)." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_65.

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AbstractA hugging flow occurs when a fluid is hugged between two undistinguishable plates fronting one another. To this end, the hugging flow between two disks in drive of unstable nature is of immense importance for its technical and scientific uses such as, molding of fluids, the study of fluid machinery such as pumps, fans, blowers, windmills, air compressors, heat exchangers, jet &amp; rocket engines, gas turbines, power plants, pollution control equipments, air-conditioning equipments, heating &amp; ventilation systems, breathing aids, heat-lungs machines, among others makes fluid mechani
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Agostini, Anna. "Libri su Atto. Una ricognizione in biblioteca fra erudizione storica sei-settecentesca e cultura ecclesiastica dell’Otto-Novecento." In Atto abate vallombrosano e vescovo di Pistoia. Firenze University Press, 2024. http://dx.doi.org/10.36253/979-12-215-0335-7.10.

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Starting from XVII century many works were written with the aim to emphasizing the figure of Atto, a Vallumbrosan monk and bishop of Pistoia, canonized in 1605 thanks to the involvement of the Vallumbrosan order and the Pistoia Church. These works are biographies of the saint, volumes of religious history and ecclesiastical memorials and handwritten and iconographic testimonies that continue in the following centuries and mainly in the ecclesiastical culture of the Nineteenth-twentieth century
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Daccord, Rémi, Julien Melis, Antoine Darmedru, et al. "Integration of a Piston Expander for Exhaust Heat Recovery in a Long Haul Truck." In Energy and Thermal Management, Air Conditioning, Waste Heat Recovery. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47196-9_5.

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Lang, Michael, Christian Bechter, Sebastian Schurl, and Roland Kirchberger. "Conception and First Functional Tests of a Novel Piston-Type Steam Expansion Engine for the Use in Stationary WHR Systems." In Energy and Thermal Management, Air-Conditioning, and Waste Heat Utilization. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00819-2_5.

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Madhan, K., R. Padmanaban, and G. Venkatesh. "Formulation and Numerical Investigation of PTFE-Based Composites for Piston Rings of Oil Free Air Compressors." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3895-5_7.

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Gao, Hang, Y. G. Zheng, W. G. Liu, and Jian Hui Li. "Development of Vitrified Bond CBN Wheel for Internal Precision Grinding of the Air-Conditioner Compressor Piston Hole." In Advances in Grinding and Abrasive Technology XIII. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-986-5.29.

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Hadjkacem, Sahar, Mohamed Ali Jemni, Hamdi Hentati, Zied Driss, and Mohamed Salah Abid. "Effect of Air-Gas Blend and Compression Ratio on Piston Behavior for Hydrogen-Enriched LPG Engine; Numerical Study." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-84958-0_19.

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Gritsenko, A. V., V. D. Shepelev, and F. N. Grakov. "Monitoring the Technical Condition of the Mass Air Flow Sensors and the Cylinder-Piston Group in Test Modes." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85233-7_21.

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Li, Zhenzhen, Chao Chen, Le Yan, Song Pan, and Lili Zhang. "“Cross-Ventilation” Effect of Piston Wind and Energy-Saving Evaluation for the Ventilation and Air Condition in Subway Station." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39578-9_16.

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Conference papers on the topic "Air pistol"

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Prikhodko, Alexander, and Andrey Novitskiy. "Dynamic Analysis of Piston Air Compressor." In 2024 International Russian Automation Conference (RusAutoCon). IEEE, 2024. http://dx.doi.org/10.1109/rusautocon61949.2024.10694084.

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Pillai, R., J. A. Haynes, T. Lowe, and D. T. Pierce. "Impact of Hydrogen Combustion on the Oxidation-induced Degradation of Heavy-duty Diesel Engine Piston Materials." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00576.

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Abstract High temperature ferritic-martensitic steels are candidate materials for heavy-duty diesel engine pistons. The envisioned transition to hydrogen blended fuels is expected to alter the post-combustion atmosphere in the engines, primarily resulting in a higher water vapor content (&amp;gt; 20 vol%) and potentially higher exhaust gas temperatures. The oxidation resistance of existing and newly developed alloys will be a critical life-limiting mechanism under these conditions. In the present work, the oxidation behavior of candidate piston alloys was evaluated in air+10 vol.% H2O and air+
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Silva, H. L. K., S. D. Uthuranga, B. Shiyamala, W. C. M. Kumarasiri, H. B. Walisundara, and G. T. I. Karunarathne. "A Trainer System for Air Rifle/Pistol Shooting." In 2009 Second International Conference on Machine Vision. IEEE, 2009. http://dx.doi.org/10.1109/icmv.2009.74.

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Lin, Yuan-Chi, Shaou-Gang Miaou, Ying-Cheng Lin, and Shih-Lun Chen. "An automatic scoring system for air pistol shooting competition based on image recognition of target sheets." In 2015 IEEE International Conference on Consumer Electronics - Taiwan (ICCE-TW). IEEE, 2015. http://dx.doi.org/10.1109/icce-tw.2015.7216821.

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Duo´, Pierangelo, Christian Pianka, Andrej Golowin, Matthias Fueller, Roger Schaefer, and Ulf Bernhardt. "Simulated Foreign Object Damage on Blade Aerofoils: Real Damage Investigation." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50371.

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During operating service, gas turbine aero-engines can ingest small hard particles which typically produce damage to the aerofoils. If the damage found is a tear or a perforation at the leading edge, it is known as a Foreign Object Damage or FOD and this leads to a reduction of the subsequent High-Cycle-Fatigue (HCF) strength. The objective of research work in this area is to assess the effect of FOD on the residual fatigue strength of compressor blades and to provide predictive tools for engineering judgment. The methodology followed is normally to carry out experimental simulation of FOD, fo
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Zhao, Zhenfeng, Fujun Zhang, Ying Huang, Zhenyu Zhang, and Dan Wu. "Study of Performance Characteristics of Opposed-Piston Folded-Cranktrain Engines." In ASME 2013 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icef2013-19198.

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This paper discusses a prototype of horizontally opposed-piston folded-cranktrain two-stroke diesel engine with combined supercharger and high-pressure common rail fuel system by Beijing Institute of Technology. The cranktrain dynamics, the thermodynamics (include the combustion process and the scavenging) are investigated, which is the main difference between this type of engine and conventional engines. The aim of the work is to design and develop a prototype of opposed-piston folded-cranktrain engine. The investigated results showed that maximum speeds of two pistons are all 13.99m/s, while
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Leach, Felix, Martin Davy, Sridhar Ayyapureddi, Steven Pierson, Juan San Primitivo Rodriguez, and Gilbert Sammut. "A Minimum Area Piston for Compression Ignition Engines." In ASME 2024 ICE Forward Conference. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/icef2024-138846.

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Abstract Conventional compression ignition (diesel) engine combustion system, employ pistons with omega shaped bowls (or a very similar shape) combined with a swirl-based bulk air motion to ensure good fuel-air mixing. However, such bowls have a relatively large surface area:volume ratio, leading to significant heat loss, and are complex to design and manufacture. Recent advances in fuel injection technology, allowing higher injection pressures and multiple injection events and digital rate shaping, along with variable intake valve technology mean that achieving sufficient fuel-air mixing may
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Bruce, Dr. "The Life and Mysterious Death of Harold F. Pitcairn: Was it Suicide?" In Vertical Flight Society 76th Annual Forum & Technology Display. The Vertical Flight Society, 2020. http://dx.doi.org/10.4050/f-0076-2020-16260.

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Harold F. Pitcairn, American aviation and Autogiro pioneer, died from a single gunshot wound to the head in the late evening hours of April 23, 1960 at the age of 62 after a gala evening at which he presided over a celebration attended by more than 450 guests for his brother's Raymond's 75th birthday. Initially labelled a suicide by the press, Pitcairn's widow Clara declared that "she never wanted to hear another word about the tragedy", while friends and friendly local authorities made the argument, duly reported by Frank Kingston Smith in Legacy of Wings, his devotional Pitcairn biography (s
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Beaver, Janvier E., and Karl Hering. "The Next Generation of Air Supply Units." In ASME/IEEE 2004 Joint Rail Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/rtd2004-66002.

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This paper describes the evolution of the original Air Supply Units as oil-lubricated piston compressors to the new range of Knorr-Bremse Oil-Less Piston Compressors. These compressors will provide reliable, cost-effective, operation in a railway environment. The design features of the Oil-Free Piston Compressor are described and the operational advantages over conventional oil-lubricated reciprocating compressors are highlighted.
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Fotis, Konstantinos-Christos, Zinon Vlahostergios, Dimitrios Misirlis, and Kyros Yakinthos. "Heat transfer model development for the free double piston engine concept." In GPPS Chania24. GPPS, 2024. http://dx.doi.org/10.33737/gpps24-tc-114.

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The Free Double Piston Composite Cycle Engine (FDP-CCE) integrates turbofan engine architecture with piston engine characteristics, aiming to optimize the engine efficiency and reduce the CO2 emissions. Its free-piston structure is significantly lighter and smaller than traditional crankshaft-connected piston engines, eliminating the need for mechanical transmissions and lubrication systems. Innovations like air lubrication, increased piston velocities, and a self-powered gas generator contribute to higher cylinder temperatures. This study details the FDP’s concept design, its operational para
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Reports on the topic "Air pistol"

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Bajwa, Abdullah, and Timothy Jacobs. PR-457-17201-R03 Residual Gas Fraction Estimation Based on Measured In-Cylinder Pressure - Phase III. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0011996.

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An experimental study was carried out to characterize the scavenging behavior of a cross-scavenged, piston-aspirated, two-stroke, natural gas engine to aid in the development of computationally inexpensive simple scavenging models for onboard engine control by (1) studying the effects of changing operational parameters on the engine's scavenging performance, and (2) identifying the underlying phenomena driving the observed effects. Tracer based methods were used to quantify the scavenging and trapping performance of the engine - CO2 was used as a tracer for combustion products and pre-mixed fu
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Bajwa, Abdullah, Tim Kroeger, and Timothy Jacobs. PR-457-17201-R04 Residual Gas Fraction Estimation Based on Measured Engine Parameters - Phase IV. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012176.

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Based on experimental characterization of the scavenging behavior of a cross-scavenged, piston-aspirated, two-stroke, natural gas engine in phase III of the current project, a computationally inexpensive simple scavenging model was improved in this phase. Experimental results using fast nondispersive infrared (NDIR) CO2 measurements from the cylinder and the exhaust, as well as experiments using unburned fuel pre-mixed in the scavenging chamber as a tracer for short-circuiting during scavenging, were used in this phase to validate the improved model. The model represents the fundamental phenom
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Landrys, Daniella. Synthèse des Rencontres inégalités et intelligence artificielle : comprendre, agir et répondre aux besoins. Observatoire international sur les impacts sociétaux de l'IA et du numérique, 2025. https://doi.org/10.61737/xedv2805.

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Ce document présente une synthèse des interventions et des échanges tenus lors des Rencontres inégalités et intelligence artificielle : comprendre, agir et répondre aux besoins, organisées par la direction Collaboration avec la société civile de l’Obvia les 31 octobre et 1er novembre 2024. L’événement, qui a eu lieu à Montréal, a réuni de nombreux acteurs de la société civile ainsi que des chercheurs et chercheuses du Québec et de l’international. Se tenant sur deux journées, ces Rencontres ont permis de mieux comprendre les enjeux d’inégalités en contexte d’IA à travers des thématiques telles
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Bieder, Corinne, René Amalberti, Jean Pariès, Hervé Laroche, Eric Marsden, and Caroline Kamaté. La sécurité à l’ère du «vivre avec»: Incertitude, complexité et nouvelles attentes. Fondation pour une Culture de Sécurité Industrielle, 2024. http://dx.doi.org/10.57071/420yzp.

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Changement climatique, digitalisation galopante, tensions politiques, économiques, géopolitiques, relation au travail distendue: la sécurité industrielle (en particulier son management) peut-elle continuer d’être pensée, modélisée et pratiquée de la même façon que par le passé malgré les évolutions notables du monde ces dernières décennies? C’est sur cette question que la Foncsi souhaite ouvrir les débats et les accompagner sur les plans tant académiques qu’industriel et pratique. Pour ce faire, le présent document met en perspective les grands changements survenus depuis la fin du siècle dern
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Law, Edward, Samuel Gan-Mor, Hazel Wetzstein, and Dan Eisikowitch. Electrostatic Processes Underlying Natural and Mechanized Transfer of Pollen. United States Department of Agriculture, 1998. http://dx.doi.org/10.32747/1998.7613035.bard.

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The project objective was to more fully understand how the motion of pollen grains may be controlled by electrostatic forces, and to develop a reliable mechanized pollination system based upon sound electrostatic and aerodynamic principles. Theoretical and experimental analyses and computer simulation methods which investigated electrostatic aspects of natural pollen transfer by insects found that: a) actively flying honeybees accumulate ~ 23 pC average charge (93 pC max.) which elevates their bodies to ~ 47 V likely by triboelectrification, inducing ~ 10 fC of opposite charge onto nearby poll
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Dudoit, Alain. L’urgence du premier lien : la chaîne d’approvisionnement du Canada au point de rupture, un enjeu de sécurité nationale. CIRANO, 2023. http://dx.doi.org/10.54932/zjzp6639.

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La création d’une chaîne d'approvisionnement intelligente est désormais une priorité de sécurité nationale urgente qui ne peut être réalisée sans la mobilisation conjointe différentes parties prenantes au Canada. Elle n’est cependant pas une finalité en soi : la réalisation d’un marché intérieur unique, compétitif, durable et axé sur les consommateurs devrait être le résultat ultime du chantier national nécessaire à la mise en œuvre collaborative des recommandations de trois rapports complémentaires de politiques publiques publiés en 2022 sur l’état de la chaine d’approvisionnement au Canada.
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Jauvin, Nathalie, François Aubry, Francis Ethridge, et al. Recherche-action visant le développement d’un modèle d’intervention préventive en SST par et pour les préposés aux bénéficiaires en CHSLD. IRSST, 2024. http://dx.doi.org/10.70010/nkup8051.

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Contexte Ce rapport a pour objectif de présenter les résultats d’une recherche-action visant le développement d’un modèle d’intervention préventive en santé et sécurité du travail (SST) par et pour les préposés aux bénéficiaires (PAB) dans les centres d’hébergement et de soins de longue durée (CHSLD) du Québec. Les PAB sont au cœur des soins prodigués dans les milieux gériatriques. Malheureusement, l’augmentation du nombre de blessures et l’accentuation des problématiques de santé psychologique subies par ce personnel depuis quelques années fragilisent leur situation, ce qui se prouve en terme
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