Relevant bibliographies by topics / Restrictor

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Restrictor'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Restrictor"

1

Zheng, Yueqing, Guangwei Yang, Hailong Cui, and Yu Hou. "Improving the stiffness of the aerostatic thrust bearing by using a restrictor with multi-orifice series." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 12 (January 6, 2020): 1881–91. http://dx.doi.org/10.1177/1350650119898957.

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To improve the stiffness of the orifice-type aerostatic bearing, a new construction of orifice restrictor with multiple orifices in series was proposed to enhance the restriction effect. The restriction effects of the restrictors with multiple orifices in series were studied numerically. Based on a circular aerostatic thrust bearing with a central feedhole, the effect of the bearing stiffness improved by the restrictors with multiple orifices in series was studied. The results show that the aerostatic bearing with the restrictors with multiple sub-orifices in series shows higher maximal bearing stiffness than the bearing with traditional simple orifice restrictor. For example, the maximal stiffness for aerostatic bearing with the restrictor of four sub-orifices in series is 57 N/µm, which is ∼11% larger than that of the bearing with simple orifice. With this construction, the restriction effect of the orifice restrictor can be enhanced by increasing the number of the sub-orifices, instead of decreasing the aperture of the orifice. This approach avoids the difficulty of manufacturing the orifice restrictor with too small aperture for achieving a high restriction effect. The feasibility of the restrictor with multiple sub-orifices in series proposed in this paper was verified with experimental studies.
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Jeffery, J. A. "Efficacy of Two Types of Femoral Cement Restrictor in Total Hip Arthroplasty." HIP International 7, no. 1 (January 1997): 28–33. http://dx.doi.org/10.1177/112070009700700104.

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Distal occlusion of the femoral canal in total hip arthroplasty is important for cement pressurisation. Failure to adequately restrict cement may result in earlier prosthetic loosening and a longer column of distal cement which may make revision surgery more difficult. A standard plastic restrictor (Hardinge type) was compared with a bone plug restriction method in a randomised, prospective trial of 50 patients. Both types of restrictor failed to adequately restrict cement in over 50% of cases.
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Zhang, Xiao Feng, and Bin Lin. "Theoretical Research on Aerostatic Rectangular Guideways with Finite Difference Method." Key Engineering Materials 339 (May 2007): 371–76. http://dx.doi.org/10.4028/www.scientific.net/kem.339.371.

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The load capacity and stiffness of the aerostatic rectangular guideways, which apply annular orifice restrictor and porous restrictor respectively, were analyzed with finite difference method in this paper. A program for solving the pressure distribution, load capacity and stiffness is programmed with VB. The calculated results show that the rise of supply pressure is good for improving the load capacity and stiffness of guideways. The decrease of the orifice diameter in annular orifice restriction and the permeability in porous restriction is advantageous to improve the stiffness of guideways, but both the corresponding bearing clearance and load capacity decrease. In both the annular restriction and porous restriction, the best film thickness which make the stiffness maximum exists under the definite supply pressure and parameter of the restrictor. Under the same supply pressure, the load capacity and stiffness of porous restriction is higher than the orifice restriction. Meanwhile, the design and manufacture of porous restrictor is simple. The porous restrictor is the perfect restrictor of aerostatic guideways.
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Chen, Chu Wei, Wei Du, Jia Qi Sun, Wei Liu, Yuan Chang, and Wei Dong. "Simulation Analysis and Design of Intake Restrictor of FSAE Race Car." Applied Mechanics and Materials 602-605 (August 2014): 751–56. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.751.

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For the intake restrictors which are designed in line with FSAE race stipulations, this paper carries out compute simulation on the convergent section and divergent section of the intake restrictors via CFD software; the paper systemically analyzes the distribution characters of its flow field, thus obtaining optimal design scheme. It finds through simulation that: when the converging half angle of the restrictor is less than 45°, the outlet flow of the restrictor will decrease as the converging half angle increases; meanwhile, the divergence half angle will affect the outlet flow of the restrictor as the pressure difference between the restrictor inlet and outlet varies. According to the simulation results, the optimal scheme finally designed is: the intake restrictor has the best effect when the converging half angle of the restrictor is 10°, while the divergence half angle is 11°.
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Liu, Zichao, Wei Pan, Changhou Lu, and Yongtao Zhang. "Numerical analysis on the static performance of a new piezoelectric membrane restrictor." Industrial Lubrication and Tribology 68, no. 5 (August 8, 2016): 521–29. http://dx.doi.org/10.1108/ilt-07-2015-0098.

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Purpose This paper aims to establish an accurate mathematical model of a piezoelectric membrane restrictor that can be applied to control the shaft’s centerline orbit. Design/methodology/approach The methodology uses three coupled equations to establish a mathematical model of the piezoelectric membrane restrictor – Reynolds equation, the membrane deformation equation and the flow rate equation. A data identification method is used to propose the flow rate formulas for the piezoelectric membrane restrictor. Findings It has been found that the structural parameters, the membrane center deformation and the inlet and outlet pressures of the piezoelectric membrane restrictor have an effect on the static performance of the restrictor. The identified flow rate result of the piezoelectric membrane restrictor is consistent with the models. Originality/value The paper provides an accurate mathematical model of the piezoelectric membrane restrictor which can also be applied to other membrane restrictors.
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Khakse, Prashant G., and Vikas M. Phalle. "Restrictor-based studies of hybrid hole-entry conical journal bearings." Industrial Lubrication and Tribology 73, no. 5 (June 9, 2021): 708–17. http://dx.doi.org/10.1108/ilt-10-2020-0379.

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Purpose This paper aims to describe how successfully a particular restrictor delivers its best in increasing the conical journal bearing performance. The restrictors are used in the hole-entry conical journal bearing subjected to hybrid mode. Thus, the restrictors, like constant flow valve (CFV), orifice and capillary, are studied comparatively. Design/methodology/approach Numerical simulation for the bearing results with the three restrictors are obtained by using finite element method (FEM) under the well-known modified Reynolds equation. Findings When the hole-entry conical journal bearings, with the restrictor design parameter range C¯s2 = 0.03 – 0.09, are operated, the results obtained are quite distinctive and significant. It indicates that the CFV restrictor-based conical bearing gives enhanced performance in comparison to orifice and capillary restrictors. Moreover, it suggests the performance-wise sequence of the restrictors in hybrid bearings as CFV > Orifice > Capillary. Originality/value The outcome of the research paper will give insight to help the bearing designer to choose the particular restrictor in hybrid conical bearing depending on the industrial need.
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Cui, Hailong, Yang Wang, Xiaobin Yue, Yifei Li, and Zhengyi Jiang. "Numerical analysis of the dynamic performance of aerostatic thrust bearings with different restrictors." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 3 (June 3, 2018): 406–23. http://dx.doi.org/10.1177/1350650118780599.

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This study utilizes a dynamic mesh technology to investigate the dynamic performance of aerostatic thrust bearings with orifice restrictor, multiple restrictors, and porous restrictor. An experiment, which investigates the bearing static load capacity, was carried out to verify the calculation accuracy of dynamic mesh technology. Further, the impact of incentive amplitude, incentive frequency, axial eccentricity ratio, and non-flatness on the bearing dynamic performance was also studied. The results show incentive amplitude effect can be ignored at the condition of amplitude less than 5% film thickness, while the relationship between dynamic characteristics and incentive frequency presented a strong nonlinear relationship in the whole frequency range. The change law of dynamic stiffness and damping coefficient for porous restrictor was quite different from orifice restrictor and multiple restrictors. The bearing dynamic performance increased significantly with the growth of axial eccentricity ratio, and the surface non-flatness enhanced dynamic performance of aerostatic thrust bearings.
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Mizumoto, Hiroshi, Taiki Sunahara, Yoshito Yabuta, Shiro Arii, S. Fujii, K. Matsumoto, and K. Murakami. "Novel Diaphragm-Control Restrictor for Precision Hydrostatic-Bearing Spindle." Key Engineering Materials 516 (June 2012): 463–68. http://dx.doi.org/10.4028/www.scientific.net/kem.516.463.

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A novel diaphragm-control restrictor (DCR) is proposed for improving the performance of the hydrostatic-bearing spindle used in machine tools. The unique function of the proposed DCR is the wide adjustability of its restrictor characteristic. A two-step restriction system is adopted for the DCR; a spool restrictor is used as the first step restrictor. By changing the restrictor resistance of the spool restrictor, the effect of the active control in the DCR, the second step restrictor, can be altered. The proposed DCR is incorporated into a hydrostatic bearing supporting a precision spindle, and the performance of the bearing is analyzed. Numerical and experimental analyses show that the stiffness of the hydrostatic bearing with the proposed DCR can be five times as large as a conventional hydrostatic bearing of the same dimensions. Analysis of the dynamic compliance shows that the effect of the active control can be observed up to 20Hz. These results show that the proposed DCR is useful for improving the performance of the hydrostatic-bearing spindle in precision applications.
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Li, Peng, Han Chen, and Xue Dong Chen. "Performance Study of Aerostatic Bearings with Arrayed Microhole Restrictors." Advanced Materials Research 311-313 (August 2011): 386–91. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.386.

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Micro-vibration of aerostatic bearings has been the bottleneck in the improvement of the moving and positioning accuracy of ultra-precision fabrication and metrology equipments. In this study, a new type of aerostatic bearing restrictor has been proposed. The prototype of arrayed microhole restrictor, instead of the conventional single hole restrictor was developed with the aim of reducing the harmful micro-vibration of aerostatic bearings. Computational fluid dynamics (CFD) was employed to numerically calculate the air flow field. It is found that the employment of arrayed microhole restrictors can reduce the amount of micro-vibration while maintain the load carrying capacity and stiffness of the aerostatic bearing. Experimental measurement of the micro-vibration confirms the effectiveness of this new type of restrictor.
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Yongtian, Kang, Xiao Wensheng, Zhang Dagang, Zhang Liang, Zhou Chouyao, and Li Mingang. "Performance validation and dynamic response analysis of a deepwater cable bending restrictor." Underwater Technology 37, no. 3 (November 18, 2020): 95–101. http://dx.doi.org/10.3723/ut.37.095.

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The deepwater cable bending restrictor is an important protective device for risers, umbilicals and cables in offshore engineering, protecting cable structure by controlling minimum bending radius. Its mechanical properties are analysed based on the numerical analysis model and finite element analysis (FEM) of ø175. The sensitivity analysis of using quantity of bending restrictors is also performed to show the effect of the quantity on bending stiffness. A testing scheme of bending stiffness of the bending restrictor is then formulated based on its structure. From numerical analysis results through test simulation, the tolerance is less than 3 %, which verifies the reliability of the numerical analysis model. Performance of the bending restrictor and dynamic response are analysed according to environmental parameters that occur once per 100 years from offshore wind power farms and pipein-pipe models, respectively. The results show the bending restrictor can effectively protect cable structure, and the pipein-pipe model is suitable for calculating mechanical properties of interaction between the bending restrictor and cable.
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Dissertations / Theses on the topic "Restrictor"

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Bednář, Martin. "Automatické testování projektu JavaScript Restrictor." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2020. http://www.nusl.cz/ntk/nusl-432879.

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The aim of the thesis was to design, implement and evaluate the results of automatic tests for the JavaScript Restrictor project, which is being developed as a web browser extension. The tests are divided into three levels - unit, integration, and system. The Unit Tests verify the behavior of individual features, the Integration Tests verify the correct wrapping of browser API endpoints, and the System Tests check that the extension does not suppress the desired functionality of web pages. The System Tests are implemented for parallel execution in a distributed environment which has succeeded in achieving an almost directly proportional reduction in time with respect to the number of the tested nodes. The benefit of this work is detection of previously unknown errors in the JavaScript Restrictor extension and provision of the necessary information that allowed to fix some of the detected bugs.
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Dollhopf, Matthew John. "NASCAR RESTRICTOR PLATE EXHAUST MANIFOLD DESIGN STRATEGIES." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4456.

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This paper presents the results of a study on exhaust manifold design for a NASCAR Restrictor plate internal combustion engine. A computer simulation model was developed using Ricardo WAVE software. WAVE is a computer-aided engineering code developed by Ricardo to analyze the dynamics of pressure waves, mass flows and energy losses in ducts, plenums and the intake and exhaust manifolds of various systems and machines. [1] The model was validated against experimental data from a current NASCAR Winston Cup restrictor plate motor. The parameters studied have been exhaust manifold diameters and lengths. A response surface analysis of the simulation output followed. The analysis of results shows the design parameters of the existing exhaust manifold are not optimized. The findings from these studies are used to derive exhaust system design guidelines which define optimum exhaust system geometry to maximize average Brake Horsepower over a given powerband for a restrictor plate NASCAR engine.
M.S.
Department of Industrial Engineering and Management Systems
Engineering and Computer Science
Industrial Engineering and Management Systems
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Tao, Fuyang. "Experimental study of restrictor noise in ventilation duct systems." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/398630/.

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Single-hole restrictors are widely used in the aircraft air distribution system (ADS). The noise generated due to the flow passing over the restrictor is a main interior noise source of the cabin. Prediction of the restrictor noise generation is important for a quite ADS design. This work experimentally and analytically studies the noise generation mechanisms of the single-hole restrictor. An experimental rig to investigate the restrictor self-noise and interaction noise generated by the turbulent wake produced by in-duct elements installed in the duct and impinging on the restrictor has been developed and constructed. Aeroacoustic measurements of the restrictor self-noise have been made both inside and in the far field of the duct. Two models have been developed to understand the restrictor noise generation mechanisms and predict the sound power level (PWL). One model is based on the surface pressure cross spectrum to compute the effective axial dipole distribution. The other is an extension of previous work and based on the static pressure drop across the restrictor. The restrictor dimension is shown to have a large effects on the restrictor noise generation. For the interaction noise generation, the important parameters including mean flow speed, restrictor dimension, turbulence level and characteristic length, that determine the sound power radiation spectrum are studied. A semi-empirical model has been developed to predict the sound power spectrum due to interaction noise. The link between the interaction noise generation and the restrictor surface pressure has been investigated. In addition to the investigation of the restrictor noise generation, this work conducted a short study into the use of surface roughness on the upstream side of the restrictor to reduce the noise generation whilst maintaining the pressure drop across it. It is shown that the noise generation can be reduced above the first cut-on frequency of the duct by increasing the upstream surface roughness.
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Lindley, Dustin. "Design and Optimization of a Throttle and Restrictor for Formula SAE." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1346171359.

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Švancár, Matúš. "Přenos bezpečnostních opatření z prohlížeče Brave do rozšíření JavaScript Restrictor." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445495.

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Users of internet browsers are constantly monitored, without their consent. By using the JavaScript APIs, it is possible to obtain various information about the browser, which together form a browser fingerprint, which can then be misused. Therefore, the goal of this work is to use a robust fingerprint protection solution of Brave browser and port it to the JavaScript Restrictor extension. In this work, the problematics of obtaining an fingerprint and countermeasures in the Brave browser are analyzed and then compared with the current protection in the JSR extension. The method of porting of Brave's countermeasures is presented and subsequently the procedure of implementation of these defense elements into the browser extension is described. The resulting implementation has been tested and evaluated, with the new protection appearing to be effective.
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Stone, Mark Adam. "Improving Off-line and On-line Supercritical Fluid Extraction Techniques by Elevating the Post-Restrictor Pressure." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26623.

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The high flow rate that results as fluid decompresses through the restrictor is arguably the single greatest problem with supercritical fluid extraction techniques. As a result of these high flow rates, solvent trapping is not efficient in many cases, and the more complicated sorbent trapping technique must be used. In addition, loss of the collection solvent may occur during the process making it difficult to work with small volumes, which are desirable from the standpoint of sensitivity, cost, and environmental concerns. Similarly, these high decompressed flows have made it difficult to directly interface supercritical fluid extraction methods with separation techniques. This is unfortunate as supercritical extractions are ideal for on-line coupling in other respects, such as the fact that the fluid becomes gaseous upon depressurization and that supercritical fluids generally extract less contaminant material. In this thesis we have shown that, by elevating the post-restrictor pressure, the decompressed flow rate can be reduced, and these problems can be minimized, considerably. Off-line trapping becomes much simpler when working at elevated pressures as the need for sorbent trapping is virtually eliminated and solvent trapping may be conducted with much less difficulty. Elevated post-restrictor pressures were found to be very beneficial for on-line work as well. SFE/GC was carried out with complete transfer of the extraction effluent to a capillary GC column, which has not previously been demonstrated. Likewise the use of an open-tubular column interface, maintained at moderately elevated pressures, allowed SFE/HPLC to be conducted with quantitative analyte transfer, even in the presence of 10% modifier. In all cases - but especially for the on-line methods - more practical extraction parameters were possible, including extraction vessel volume, extraction flow rate, and dynamic extraction time. Another benefit of elevating the post-restrictor pressure is that higher extraction flow rates will generally be possible. The benefits of this were not evaluated in the research presented here, however, the effect that the extraction flow rate can have on extraction time is considered, from a theoretical standpoint, in Chapter five.
Ph. D.
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Chládek, Martin. "Výroba jezdce." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230449.

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Slider is a part of turn restrictor mechanism designed by company TOKOZ a.s. It is a part with complicated form and small dimensions from material DC04 (equivalent according to Czech standard ČSN 11 305.21). As the most suitable option for part manufacturing was chosen cutting and bending in progressive die. A design of forming layout with 11 stations was made and considering the outcomes of related calculations preliminarily selected presses LEXN 100 and Kaiser KSTU 1600. Subsequently was designed one row progressive die. Based on this designs were made few variants of part price calculations according to TOKOZ company customs. According to price calculation outcomes was as the most suitable selected press Kaiser KSTU 1600.
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Řehák, Ivo. "Návrh sacího traktu pro vůz Formule SAE." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228026.

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Thesis is bend on design of intake manifold for car Formula SAE. For driving of this car is used engine Yamaha YZF R6 (2005). Design of intake tract is processed so that agrees with rules and specifications for cars Formula SAE. For restriction of engine performance is in intake tract installed restrictor. For filling efficiency uplift of engine is used the resonance effect in intake pipes. Analysis of flow is carry out on simulation software for analyses of one dimensional flow.
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Pavličík, Lukáš. "Sací potrubí jednoválcového motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231694.

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The aim of this diploma thesis is to create a thermodynamic computational model of a single cylinder IC engine for the Formula SAE car. The single cylinder SI engine KTM 500 EXC is considered as a powertrain unit. The intake manifold of the serial enduro motorcycle is modified according to the Formula SAE 2014 rules. Analysis of the one dimensional flow is performed by using Lotus engine simulation software.
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Adámek, Ladislav. "Zvýšení pružnosti zážehového jednoválcového motoru formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229714.

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Diplomová práce je zaměřena na konstrukční návrh sacího potrubí pro vůz Formula Student. Pro pohon vozu je použit jednoválcový atmosférický benzinový motor Husaberg FE 570. Sací potrubí je navrhováno tak, aby bylo v souladu s pravidly Formula Student. Pro zvýšení plnící účinnosti sací potrubí využívá resonančního efektu. Délky sacího potrubí byly spočítány v software Lotus Engine simulation.
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Books on the topic "Restrictor"

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Hill, Novella S. Fat controlled, cholesterol restricted, calorie restricted, sodium restricted diet. [Washington, DC: Dept. of the Air Force, Headquarters US Air Force], 1987.

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Vayou, M. V. RESTRICTED THESIS. Manchester: UMIST, 1992.

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Access restricted. Don Mills (Ont.): Harlequin Enterprises, Limited, 2017.

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Overton, R. A. RESTRICTED THESIS. Manchester: UMIST, 1993.

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Wherrett, D. K. RESTRICTED THESIS. Manchester: UMIST, 1992.

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Svinterikou, Sofia. RESTRICTED THESIS. Manchester: UMIST, 1997.

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Jayantilal, A. RESTRICTED THESIS. Manchester: UMIST, 1995.

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Pingoud, Alfred M., ed. Restriction Endonucleases. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18851-0.

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Restricted orbit equivalence. Providence, R.I., USA: American Mathematical Society, 1985.

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Nestle, Joan. A restricted country. Ithaca, N.Y: Firebrand Books, 1987.

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Book chapters on the topic "Restrictor"

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Gooch, Jan W. "Restrictor Bar." In Encyclopedic Dictionary of Polymers, 627. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9985.

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Gooch, Jan W. "Restrictor Ring." In Encyclopedic Dictionary of Polymers, 627. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9986.

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Zhang, Lei. "Domain Restrictor Chúfēi and Relevant Constructions." In Lecture Notes in Computer Science, 620–29. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49508-8_56.

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Pavankumar, A. V., R. Suraj, Puneet Kumar, H. S. Shiva Prasad, and Kumar K. Gowda. "Parametric Optimization of FSAE Restrictor for Random Vibrational Analysis." In Lecture Notes in Mechanical Engineering, 253–62. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1771-1_28.

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Mizumoto, H., T. Matsubara, H. Yamamoto, K. Okuno, and M. Yabuya. "An Infinite-stiffness Aerostatic Bearing with an Exhaust-control Restrictor." In Progress in Precision Engineering, 315–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84494-2_35.

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Pintado, Publio, Carmen Ramiro, Angel Luis Morales, Antonio Javier Nieto, and Jose Manuel Chicharro. "High Speed Railway Vehicle Comfort. The Influence of Pneumatic Flow Restrictor Diameter, Rail Irregularities, Speed and Structural Damping and Stiffness." In Lecture Notes in Mechanical Engineering, 938–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38077-9_109.

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Roberts, R. J., M. Belfort, T. Bestor, A. S. Bhagwat, T. A. Bickle, J. Bitinaite, R. M. Blumenthal, et al. "A Nomenclature for Restriction Enzymes, DNA Methyltransferases, Homing Endonucleases, and Their Genes." In Restriction Endonucleases, 1–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18851-0_1.

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Reuter, M., M. Mücke, and D. H. Krüger. "Structure and Function of Type IIE Restriction Endonucleases — or: From a Plasmid That Restricts Phage Replication to A New Molecular DNA Recognition Mechanism." In Restriction Endonucleases, 261–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18851-0_10.

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Welsh, A. J., S. E. Halford, and D. J. Scott. "Analysis of Type II Restriction Endonucleases that Interact with Two Recognition Sites." In Restriction Endonucleases, 297–317. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18851-0_11.

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Sidorova, N., and D. C. Rau. "The Role of Water in the EcoRI-DNA Binding." In Restriction Endonucleases, 319–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18851-0_12.

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Conference papers on the topic "Restrictor"

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Kokkula, Prithvi Raj, Shashank Bhojappa, Selin Arslan, and Badih A. Jawad. "Design and Optimization of the Restrictor of a Race Car." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52940.

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Formula SAE is a student competition organized by SAE International. The team of students design, manufacture and race a car. Restrictions are imposed by the Formula SAE rules committee to restrict the air flow into the intake manifold by putting a single restrictor of 20 mm. This rule limits the maximum engine power by reducing the mass flow rate flowing to the engine. The pull is greater at higher rpms and the pressure created inside the cylinder is low. As the diameter of the flow path is reduced, the cross sectional area for flow reduces. For cars running at low rpm when the engine requires less air, the reduction in area is compensated by accelerated flow of air through the restrictor. Since this is for racing purpose cars here are designed to run at very high rpms where the flow at the throat section reach sonic velocities. Due to these restrictions the teams are challenged to come up with improved restrictor designs that allow maximum pressure drop across the restrictor’s inlet and outlet. The design considered for optimizing a flow restrictor is a venturi type having 20 mm restriction between the inlet and the outlet complying with the rules set by Formula SAE committee. The primary objective of this work is to optimize the flow restriction device that achieves maximum mass flow and minimum pull from the engine. This implies the pressure difference created due to the cylinder pressure and the atmospheric pressure at the inlet should be minimum. An optimum flow restrictor is designed by conducting analysis on various converging and diverging angles and coming up with an optimum value. Venturi type is a tubular pipe with varying diameter along its length, through which the fluid flows. Law of governing fluid dynamics states that the “Velocity of the fluid increases as it passes through the constriction to satisfy the principle of continuity”. An equation can be derived from the combination of Bernoulli’s equation and Continuity equation for the pressure drop due to venturi effect. [1]. A Computational Fluid Dynamics (CFD) tool is used to calculate the minimum pressure drop across the restrictor by running a series of analysis on various converging and diverging angles and calculating the pressure drop. As a result, an optimum air flow restrictor is achieved that maximizes the mass flow rate and minimizes the engine pull.
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Pewny, Jannik, and Thorsten Holz. "Control-flow restrictor." In ACSAC '13: Annual Computer Security Applications Conference. New York, NY, USA: ACM, 2013. http://dx.doi.org/10.1145/2523649.2523674.

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Yang, Cho-Yun, Cho-Yu Yang, Jia-Wei Lu, Wei-Chih Lee, Yu-Min Hung, and Cheng Kuo Sung. "A Novel Design of a Self-Sensing Compensating Restrictor/Pad Module for Hydrostatic Bearings." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20221.

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This paper proposes the design of a self-sensing compensating restrictor/pad module for hydrostatic bearings. The module consists of a bearing pad and the associated restrictor featuring the characteristics of self-sensing compensation and easy installation. The paper first introduces the configuration of the proposed module. Then, the lumped parameter model was used to derive the equation for the relationship between the pocket pressure and the bearing gap. Furthermore, equations governing the stiffness and load-carrying capacity of the bearing were also obtained. Influences of the design parameters, such as the land length and pressure ratio, on bearing performance and the feasibility of the new design were studied both analytically and experimentally. Results of the theoretical analysis were compared with that of the experiment. Superior performances on the aspects of stiffness and load-carrying capacity, as well as time delay due to the distance between restrictor and bearing pad to the traditional restrictors such as capillary and orifice were achieved. In addition, the proposed restrictor possesses the advantages of simplicity for both manufacturing and assembly in comparison with the membrane-type restrictors.
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Cauchi, Jonathan, Mario Farrugia, and Noel Balzan. "Engine Simulation of a Restricted FSAE Engine, Focusing on Restrictor Modelling." In Motorsports Engineering Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-3651.

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Nakao, Yohichi, Shota Nakatsugawa, Masataka Komori, and Kenji Suzuki. "Design of Short-Pipe Restrictor of Hydrostatic Thrust Bearings." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87306.

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High stiffness hydrostatic bearings are needed in order to achieve precise motions of the machine components of ultra-precision machine tools or other precision machines. Design procedure of restrictors of hydrostatic thrust bearings, making bearing stiffness maximize under given conditions, is considered in the paper. In particular, the paper focuses on design of short pipe restrictors that are used in the hydrostatic thrust bearings in many industrial applications. Derived mathematical model predicting load capacity and stiffness of the hydrostatic bearings with short pipe restrictors are verified by compared with experimental results. Based on the derived mathematical model, an optimum condition of a ratio between the diameter and length of the short pipe restrictor is then derived. Designed short pipe restrictors are used in a water hydrostatic thrust bearing. Then the experimental results show that the bearing stiffness significantly increased. It is noted that the optimum condition of the restrictors is represented by defined non-dimensional parameters.
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Chen, Cheng-Hsien, Yuan Kang, Yeon-Pun Chang, De-Xing Peng, and Ding-Wen Yang. "Influences of Recess Geometry and Restrictor Dimension on Flow Patterns and Pressure Distribution of Hydrostatic Bearings." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28219.

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This paper studies the influences of recess geometry and restrictor dimensions on the flow patterns and pressure distribution of lubricant film, which are coupled effects of hybrid characteristics of a hydrostatic bearing. The lubricant flow is described by using the Navier-Stokes equations. The Galerkin weighted residual finite element method is applied to determine the lubricant velocities and pressure in the bearing clearance. The numerical simulations will evaluate the effects of the land-width ratio and restriction parameter as well as the influence of modified Reynolds number and the jet-strength coefficient on the flow patterns in the recess and pressure distribution in lubricant film. On the basis of the simulation drawn from this study, the simulated results are expected to help engineers make better use of the design of hydrostatic bearing and its restrictors.
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León, Arturo S., Yovanni A. Cataño-Lopera, Xiaofeng Liu, Arthur R. Schmidt, and Marcelo H. García. "Experimental and CFD Modeling of a Vortex Flow Restrictor." In World Environmental and Water Resources Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40976(316)646.

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Boet, W. J. C., and J. M. M. Out. "Analysis of a Flexible-Riser Top Connection With Bend Restrictor." In Offshore Technology Conference. Offshore Technology Conference, 1990. http://dx.doi.org/10.4043/6436-ms.

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Yu, Jing, Bo Fang, Tiantai Guo, Dongsheng Li, and Wen Zhang. "Design of aerostatic bearing restrictor with multi-loop coupling pocket." In Sixth International Symposium on Precision Engineering Measurements and Instrumentation. SPIE, 2010. http://dx.doi.org/10.1117/12.885461.

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Amouzegar, Ladan, Sean W. Reilly, and Ivan Catton. "Investigating the Performance of Bi-Porous Disk-Shaped Wick With the Restricted Vapor Space by Developing an Electric Analogue Method." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44312.

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In this work, we build up a model applying our analogy strategy to investigate the performance of the Bi-porous wicks which are intended to eventually be used as the substrate in the TGP (Thermal Ground Plane) devices which function like thin heat pipes. In order to more closely simulate the operating conditions in a TGP, the vapor space above the wick is restricted, and consequently inserting vapor grooves in the wick is required to maintain the vapor removal. Further, adding a mono-porous layer at the bottom aids in delaying dry out by enhancing the liquid supply. [1] Here, we present our effort improving an electric analogue model to simulate the bi-porous wick described above. The model is based on the similarity between the differential equations governing the two systems. The analog model is initially improved for a disk-shaped bi-porous wick with a restrictor on top and grooves introduced in the bi-porous region. Moreover, the analogue technique is employed as a tool to investigate the performance of the wick with the vapor restrictor mounted thoroughly on top, to compare the experimental data achieved in a boiling chamber versus TGP device, and to estimate the required data for the bi-porous evaporator calculations.
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Reports on the topic "Restrictor"

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Aaron, David A., and Piotr A. Domanski. An experimental investigation and modeling of the flow rate of refrigerant 22 through the short tube restrictor. Gaithersburg, MD: National Institute of Standards and Technology, 1989. http://dx.doi.org/10.6028/nist.ir.89-4120.

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Picard, Mary. F/A-18A/B/C/D Main Landing Gear Control Unit Hydraulic 2A Supply Line Pressure Spikes and Emergency Port Restrictor Ground and Flight Tests Evaluation. Fort Belvoir, VA: Defense Technical Information Center, November 2002. http://dx.doi.org/10.21236/ada409130.

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Fink, Eugene, and Derick Wood. Strong Restricted-Orientation Convexity,. Fort Belvoir, VA: Defense Technical Information Center, June 1995. http://dx.doi.org/10.21236/ada302164.

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Ludvigson, Sydney, Sai Ma, and Serena Ng. Shock Restricted Structural Vector-Autoregressions. Cambridge, MA: National Bureau of Economic Research, March 2017. http://dx.doi.org/10.3386/w23225.

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Chernozhukov, Victor, Whitney K. Newey, and Andres Santos. Constrained conditional moment restriction models. Institute for Fiscal Studies, September 2015. http://dx.doi.org/10.1920/wp.cem.2015.5915.

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Satterthwait, Arnold C. Conformationally Restricted Synthetic AIDS Vaccine. Fort Belvoir, VA: Defense Technical Information Center, February 2001. http://dx.doi.org/10.21236/ada392520.

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Jiang, Zhiming, Ziyan Qu, Fen Miao, Hongyan Wu, and Ye Li. The effectiveness of intermittent fasting, caloric restriction and time-restricted feeding for the blood pressure management in general healthy adults: Protocol for a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, December 2020. http://dx.doi.org/10.37766/inplasy2020.12.0031.

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Goodrich, Jennifer S. EGFR Activation by Spatially Restricted Ligands. Fort Belvoir, VA: Defense Technical Information Center, June 2004. http://dx.doi.org/10.21236/ada426969.

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Voigtländer, Nico, and Hans-Joachim Voth. How the West 'Invented' Fertility Restriction. Cambridge, MA: National Bureau of Economic Research, August 2011. http://dx.doi.org/10.3386/w17314.

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Linton, Oliver, Jiti Gao, and Chaohua Dong. High dimensional semiparametric moment restriction models. The IFS, January 2018. http://dx.doi.org/10.1920/wp.cem.2018.0418.

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