Gotowe bibliografie tematyczne / Phase angle

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Gotowa bibliografia na temat „Phase angle”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 10 marca 2023

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Artykuły w czasopismach na temat "Phase angle"

Tatchev, Dragomir. "Multiphase approximation for small-angle scattering". Journal of Applied Crystallography 43, nr 1 (9.12.2009): 8–11. http://dx.doi.org/10.1107/s0021889809048675.

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The two-phase approximation in small-angle scattering is well known and is still the dominant approach to data analysis. The intensity scattered at small angles is proportional to the second power of the difference between the scattering densities of the two phases. Nevertheless, scattering contrast variation techniques are widely used, and they are obviously suitable for multiphase systems or systems with gradually varying scattering density, since if no parasitic scattering contributions are present the scattering contrast variation would only change a proportionality coefficient. It is shown here that the scattered intensity at small angles of a multiphase system can be represented as a sum of the scattering of two-phase systems and terms describing interference between all pairs of phases. Extracting two-phase scattering patterns from multiphase samples by contrast variation is possible. These two-phase patterns can be treated with the usual small-angle scattering formalism. The case of gradually varying scattering density is also discussed.

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Ohira, Takashi. "Phase Angle [Enigmas, etc.]". IEEE Microwave Magazine 22, nr 9 (wrzesień 2021): 101–2. http://dx.doi.org/10.1109/mmm.2021.3086379.

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Mitrovi, Zoran. "A phase angle standard". Measurement Science and Technology 15, nr 3 (9.02.2004): 559–64. http://dx.doi.org/10.1088/0957-0233/15/3/008.

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Mytsenko, I., i O. Roenko. "QUICK-ACTING, CONTROLLABLE PHASE SHIFTER FOR PHASE ANGLE ADJUSTMENT IN RADIO SIGNALS". RADIO PHYSICS AND RADIO ASTRONOMY 27, nr 3 (2022): 213–18. http://dx.doi.org/10.15407/rpra27.03.213.

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Subject and Purpose. The phase shifters intended for controlling the phase of radio signals are widely used in ultra-high frequency technology, communication systems, radar, and a variety of measuring and special-purpose radio equipment. Designers of phased array antennas face the need of providing for broad beam scanning angles and high antenna gains, which leads to the necessity of greatly increasing the number of array elements, each of which is to be controlled by a phase shifter. Therefore, the development and creation of quick-acting phase shifters is an urgent task. The purpose of this work is to develop high-speed, controllable phase shifters for performing phase angle adjustments and thus provide, at an acceptable cost, for desirable parameters of phased antenna arrays, frequency stabilizing systems of magnetrons, etc. Methods and Methodology. The functional diagram of the proposed quick-acting, controllable phase shifter has been analyzed mathematically and modelled numerically. Results. The controllable phase shifter can be successfully implemented through the use of two parallel-connected resonators at the input of a specific receiver. Analysis of the signal amplitude and phase at the output of the phase shifter in dependence on the values at the input confirms the possibility of adjusting the phase of the output signal over a wide range of angles. Conclusions. A design concept of quick-acting, controllable phase shifters for producing adjustable phase angles has been developed. The device can be employed in phased antenna arrays or frequency stabilizing systems as a means of improving their operation parameters and reducing their cost at that.

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Matsuzawa, Yuta, Takasuke Miyazaki, Yasufumi Takeshita, Naoto Higashi, Hiroyuki Hayashi, Sota Araki, Shintaro Nakatsuji, Seiji Fukunaga, Masayuki Kawada i Ryoji Kiyama. "Effect of Leg Extension Angle on Knee Flexion Angle during Swing Phase in Post-Stroke Gait". Medicina 57, nr 11 (9.11.2021): 1222. http://dx.doi.org/10.3390/medicina57111222.

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Background and Objectives: Leg extension angle is important for increasing the propulsion force during gait and is a meaningful indicator for evaluating gait quality in stroke patients. Although leg extension angle during late stance might potentially also affect lower limb kinematics during the swing phase, the relationship between these two remains unclear. This study aimed to investigate the relationship between leg extension angle and knee flexion angle during pre-swing and swing phase in post-stroke gait. Materials and Methods: Twenty-nine stroke patients walked along a 16 m walkway at a self-selected speed. Tilt angles and acceleration of pelvis and paretic lower limb segments were measured using inertial measurement units. Leg extension angle, consisting of a line connecting the hip joint with the ankle joint, hip and knee angles, and increments of velocity during pre-swing and swing phase were calculated. Correlation analysis was conducted to examine the relationships between these parameters. Partial correlation analysis adjusted by the Fugl-Meyer assessment-lower limb (FMA-LL) was also performed. Results: On the paretic side, leg extension angle was positively correlated with knee flexion angle during the swing phase (r = 0.721, p < 0.001) and knee flexion angle and increments of velocity during the pre-swing phase (r = 0.740–0.846, p < 0.001). Partial correlation analysis adjusted by the FMA-LL showed significant correlation between leg extension angle and knee flexion angle during the swing phase (r = 0.602, p = 0.001) and knee flexion angle and increments of velocity during the pre-swing phase (r = 0.655–0.886, p < 0.001). Conclusions: Leg extension angle affected kinematics during the swing phase in post-stroke gait regardless of the severity of paralysis, and was similar during the pre-swing phase. These results would guide the development of effective gait training programs that enable a safe and efficient gait for stroke patients.

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Fischer, I. S., i R. N. Paul. "Kinematic Displacement Analysis of a Double-Cardan-Joint Driveline". Journal of Mechanical Design 113, nr 3 (1.09.1991): 263–71. http://dx.doi.org/10.1115/1.2912778.

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The input-output displacement relations of two Cardan joints arranged in series on a driveline has been investigated in detail, including the effects of unequal joint angles, the phase angle between the two Cardan joints and also such manufacturing tolerance errors as nonright angle moving link lengths and offset joint axes. A combined Newton-Raphson method and Davidon-Fletcher-Powell optimization algorithm using dual-number coordinate-transformation matrices was employed to perform the analysis. An experiment was conducted to validate the results of the analysis. The apparatus consisted of a double-Cardan-joint driveline whose rotations were measured by optical shaft encoders that were sampled by a computer data-acquisition system. The equipment was arranged so that the phase angle between the joints and the offset angles between the shafts at each of the two joints could be readily varied. The “relative phase angle,” the difference between the phase angle of the two joints and the angle between the planes defined by the input and intermediate and the intermediate and output shafts, was found to be the significant factor. If the offset angles at both Cardan joints are equal, the double-Cardan-joint driveline functions as a constant-velocity coupling when the magnitude of the relative phase angle is zero. If the offset angles at the two Cardan joints are unequal, a condition prevailing in the important front-wheel-drive automobile steering-column application, then fluctuation in output velocity for a constant input velocity is minimized although not eliminated for zero relative phase angle.

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Xi, Zhi Jun, Gang Li i Li Ming Lu. "Fabrication of Ultrahydrophobic ZnO by Vapor Phase Transport". Advanced Materials Research 282-283 (lipiec 2011): 753–56. http://dx.doi.org/10.4028/www.scientific.net/amr.282-283.753.

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A ultrahydrophobic ZnO film was synthesized on the Si substrates by a novel vapor phase transport method. The surface structural properties of as-synthesized ZnO film was characterized using scanning electron micrograph (SEM). The contact angles and the rolling angles on such films were measured through an optical contact angle meter. Wettability studies revealed the films exhibited a ultrahydrophobic behaviour with a higher contact angle of 166.8°±6.8° and lower rolling angle of less than 2°-a water droplet moved easily on the surface. SEM showed that compared with pure smooth nickel surface, a lotus-like structrure with micro-nano hierarchical papillae was obviously observed on the ultrahydrophobic ZnO film surface. Such a speccial surface microstructure may result in the ultrahydrophobicity.

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Rozhkov, V., L. Taran, D. Okun, L. Riadova i V. Shutieiev. "Influence technique of the take-off phase on the flight phase of the hop in the female triple jump among elite athletes". Scientific Journal of National Pedagogical Dragomanov University. Series 15. Scientific and pedagogical problems of physical culture (physical culture and sports), nr 11(157) (1.12.2022): 126–29. http://dx.doi.org/10.31392/npu-nc.series15.2022.11(157).29.

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The article discusses relationships between biomechanical parameters techniques take-off phase and flight phase of the hop among the qualified women specializing in triple jump. As a result of correlation analyses was determined that if research women faster put leg on the support, they will have more initial velocity of the total center of mass of the bodies r=0,955, reducing values dilution of the hips during flight phase of the hop r=-0,773, decrease time of flight phase of the hop r=-0,788 and increases long of the hop r=0,793. If athletes spend more time on take-off phase, they will have more initial velocity of the total center of mass of the bodies r=0,770. Take-off angle influences on such parameter’s techniques of flight phase of the hop as: velocity of the total center of mass of the body’s r=0,721, angle between thighs r=-0,722. The correlation coefficient showed that if research athletes have more take-off angle they will have more velocity of the total center mass of the body and less angle between thighs during flight phase of the hop. Determined direct correlation between angle between hop at the take-off phase and angle between hop at the flight phase of the hop r=0,717. If women athletes have more angles between thighs at the take-off phase, they will have more angles between thighs at flight phase of the hop. Determined that for effective implementation phase of the hop during techniques trainings should more time spend on improvement angles parameters of the take-off, increase the velocity of the put leg on support, and less time of the take-off phase.

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Ibrahim, M. A., i F. P. Stacom. "Phase angle regulating transformer protection". IEEE Transactions on Power Delivery 9, nr 1 (1994): 394–404. http://dx.doi.org/10.1109/61.277711.

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Alturaigi, M. A. "Real-time phase-angle measurement". Canadian Journal of Electrical and Computer Engineering 21, nr 2 (kwiecień 1996): 57–60. http://dx.doi.org/10.1109/cjece.1996.7102126.

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Rozprawy doktorskie na temat "Phase angle"

Maamache, Mustapha. "Phase de berry, angle de annay et etats coherents action angle". Nice, 1993. http://www.theses.fr/1993NICE4625.

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Ce travail de physique theorique porte sur les relations entre la phase de berry et l'angle de hannay qui sont deux notions geometriques decrivant des transports naturels en physique respectivement quantique et classique. Le but principal de ce travail a ete d'elaborer un nouveau formalisme, celui des etats quantiques action angle (generalisation des etats coherents de l'oscillateur harmonique), dans lequel le transport classique apparait comme un cas particulier du transport quantique. Cela a permis non seulement d'etablir plusieurs derivations quantiques inedites de l'angle de hannay, mais aussi d'apporter des eclairages originaux sur la relation entre la phase de berry et l'angle de hannay a travers l'introduction des notions de principe variationnel moyenne ou de minimisation de metriques sur les etats quantiques ou les trajectoires classiques. Le rapport entre la phase de berry et l'angle de hannay a egalement ete examine dans le cas des systemes grassmaniens

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Magozore, Caxton. "DSP phase angle controlled three phase to single phase uninterruptible power supply". Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/5177.

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Alps, Mike. "The phase transformation friction angle of sand". abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442864.

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Leibly, Frank J. (Frank Joseph). "Measurement and digitization of phase angle modulated sensor data". Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37753.

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Kok, Yitping. "Phase-referenced Interferometry and Narrow-angle Astrometry with SUSI". Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10028.

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This thesis describes the development of an astrometric facility at the Sydney University Stellar Interferometer (SUSI) with an aim to measure at high precision the relative astrometry of bright close binary stars and ultimately to detect the presence of exoplanets within those binary star systems through observations of the systems’ perturbed motion. At the core of the facility is a new beam combiner that is phase-referenced to an existing primary beam combiner in the visible wave- length regime. The latter provides post-processed fringe-tracking information to the former for fringe stabilization and coherent integration of pre-recorded stellar fringes using newly developed data reduction software. Interference fringe packets of a binary star are recorded alternately; first the fringe packet of the primary, then the secondary, finally back to the primary again. The measurement of the fringe packet separation is facilitated by an air-filled differential delay line and a network of interferometer-based metrology systems. Characterizations and initial astronomical observations carried out with the dual beam combiner setup demonstrated for the first time the success of the dual-star phase-referencing technique in visible (~1μm) wavelengths. The current astrometric precision is larger than 100μas while the long term astrometric accuracy is yet to be characterized. In a parallel development, a complementary observing method using only the primary beam combiner is also demonstrated in this thesis. Relative astrometry of binary stars up to ~0.8” separation with this technique has been demonstrated to have precision of better than 100μas. A simple detection limit analysis based on a list of target binary stars estimates up to two exoplanet detections can be achieved with SUSI if the new astrometric facility attains precision of 10μas while the primary beam combiner operates at its designed peak performance. Finally, one new stellar companion was resolved and a preliminary astrometry for another suspected companion was estimated from the astronomical observation data collected throughout the course of this thesis.

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Morris, Darryl William Seymour. "Low angle protein phasing". Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341631.

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Eaton, Elizabeth Jane. "Paradoxical breathing and arousal from sleep". Thesis, Manchester Metropolitan University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320131.

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Sadler, Peter Andrew. "Harmonic elimination and voltage control in three phase AC power converters". Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285285.

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Allison, Steven David. "The effects of interblade phase angle on pitch oscillating, transonic, cascade flows". Thesis, University of Salford, 2011. http://usir.salford.ac.uk/26530/.

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A series of compressor blades, aligned as a cascade, situated in a transonic flow has been studied using a two-dimensional Computational Fluid Dynamics (CFD) technique. An objective of the research was to discover, using a CFD code, how the total aerodynamic stability of a compressor cascade was affected by blade pitching oscillations, vibrating at certain interblade phase angles and oscillation frequencies. The analysis focused on the way in which the interblade phase angle, a, is likely to affect the stability of the cascade over a range of oscillation frequencies between 200Hz and 1 OOOHz, for a series of interblade phase angles between 0° and 180°. Two turbulence models were assessed to determine the sensitivity of turbulence coding, namely the Baldwin-Lomax and Johnson-King models. A validation of the CFD code against published data from the NASA Lewis Research Centre was carried out. The interaction of the passage shock, formed between the blades, and on the positive pressure surface of the blade was shown to have the greatest influence on the aerodynamic stability of the cascade; the shocks formed on the suction side had a somewhat smaller effect. Any flow separation, on either the suction or pressure surfaces, was also shown to decrease cascade stability.

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Cocquerelle, Jean-Louis. "Étude des associations en triphasé : gradateur en angle de phase - transformateur - résistances". Lille 1, 1985. http://www.theses.fr/1985LIL10107.

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Pour régler de façon continue le débit du réseau de distribution dans un récepteur triphasé résistif, à l'aide d'un dispositif présentant de très faibles pertes, il est usuel de disposer un gradateur fonctionnant en "angle de phase" entre la source et la charge. Il est presque toujours nécessaire, dans les équipements de forte puissance, d'ajouter un transformateur. L'analyse du fonctionnement de l'ensemble transformateur - gradateur - charge est très complexe, pour plusieurs raisons :- D'abord, ces dispositifs fonctionnent en commutation libre, c'est à dire que l'on ne peut commander que la mise en conduction des thyristors. - Ensuite, la présence du transformateur modifie totalement, par le couplage magnétique qu'il introduit entre les phases, le comportement du gradateur. En effet, les instants d'extinction des thyristors ne sont pas uniquement dépendant des tensions d'alimentation, mais à la fois du couplage des enroulements, de l'emplacement des composants, du niveau de la charge, ainsi que de l'état magnétique du transformateur. La première partie du mémoire est consacrée à l'étude analytique du fonctionnement en régime permanent. La deuxième partie concerne la comparaison des divers montages, en régime permanent, mais également face à un défaut comme la rupture d'une résistance de charge. Une méthode par simulation est alors introduite, elle permet d'élaborer la meilleure "loi de commande" du gradateur disposé dans une structure donnée.

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Książki na temat "Phase angle"

Turgel, R. S. NBS phase angle calibration services. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Turgel, R. S. NBS 50 kHz phase angle calibration standard. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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Turgel, R. S. NBS measurement services: NBS phase angle calibration services. [Gaithersburg, MD]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Turgel, R. S. NBS measurement services: NBS phase angle calibration services. [Gaithersburg, MD]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Turgel, R. S. NBS measurement services: NBS phase angle calibration services. Washington, D.C: National Bureau of Standards, 1988.

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Zeinolebadi, Ahmad. In-situ Small-Angle X-ray Scattering Investigation of Transient Nanostructure of Multi-phase Polymer Materials Under Mechanical Deformation. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-35413-7.

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Sėngėė, I͡a. Mongol-Angli i͡ariany dėvtėr =: Phrase-book. Ulaanbaatar: Ulsyn Khėvlėliĭn Gazar, 1991.

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S, Abdullokhodzhaeva K., Kamalova A. R i Samarina L. R, red. Anglo-tadzhiksko-russkiĭ razgovornik. Wyd. 2. Dushanbe: "Maorif,", 1991.

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Minakov, S. V. Anglo-russkiĭ razgovornik. Voronezh: Izd-vo Voronezhskogo universiteta, 1992.

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Części książek na temat "Phase angle"

Gooch, Jan W. "Phase Angle". W Encyclopedic Dictionary of Polymers, 529. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8624.

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Weik, Martin H. "phase angle". W Computer Science and Communications Dictionary, 1256. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_13885.

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Gooch, Jan W. "Dielectric Phase Angle". W Encyclopedic Dictionary of Polymers, 213. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3586.

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Morrissey, Zachery, Liang Zhan, Hyekyoung Lee, Johnson Keiriz, Angus Forbes, Olusola Ajilore, Alex Leow i Moo Chung. "Phase Angle Spatial Embedding (PhASE)". W Medical Image Computing and Computer Assisted Intervention – MICCAI 2018, 367–74. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00931-1_42.

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Pletser, Vladimir. "Phase Integral and Action-Angle Variables". W UNITEXT for Physics, 91–124. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3026-1_6.

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Kostorz, G. "Metals And Alloys: Phase Separation and Defect Agglomeration". W Modern Aspects of Small-Angle Scattering, 255–66. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8457-9_8.

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Chen, Guangcheng, Li He, Yisheng Guan i Hong Zhang. "Perspective Phase Angle Model for Polarimetric 3D Reconstruction". W Lecture Notes in Computer Science, 398–414. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-20086-1_23.

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Youens, Bernadette N., W. David Cooper, Frank D. Raymond, Paul S. Gascoine i Derek Fisher. "Mechanism of Cell Partitioning; Equilibrium Contact Angle Measurements Predict Relative, Kinetic Partitioning Behaviour". W Separations Using Aqueous Phase Systems, 271–80. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5667-7_43.

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Nikolayev, Vadim S. "Evaporation Effect on the Contact Angle and Contact Line Dynamics". W The Surface Wettability Effect on Phase Change, 133–87. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-82992-6_6.

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Floriano, M. A., E. Caponetti, G. Pipitone i R. Triolo. "Small-Angle Scattering from Phase-Separated Metallic Alloys: From Experiment to Phase Diagrams". W Metallic Alloys: Experimental and Theoretical Perspectives, 83–92. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1092-1_10.

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Streszczenia konferencji na temat "Phase angle"

Lee, KyeoReh, Seungwoo Shin, Zahid Yaqoob, Peter T. C. So i YongKeun Park. "Low-coherent optical diffraction tomography by angle-scanning illumination (Conference Presentation)". W Quantitative Phase Imaging V, redaktorzy Gabriel Popescu i YongKeun Park. SPIE, 2019. http://dx.doi.org/10.1117/12.2513188.

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Kujawińska, Malgorzata, Wojciech Krauze, Maria Baczewska, Arkadiusz Kuś i Michal Ziemczonok. "Comparative study of laboratory and commercial limited-angle holographic tomography setups". W Quantitative Phase Imaging V, redaktorzy Gabriel Popescu i YongKeun Park. SPIE, 2019. http://dx.doi.org/10.1117/12.2511641.

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Boufounos, Petros T. "Angle-preserving quantized phase embeddings". W SPIE Optical Engineering + Applications, redaktorzy Dimitri Van De Ville, Vivek K. Goyal i Manos Papadakis. SPIE, 2013. http://dx.doi.org/10.1117/12.2024412.

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Fan, Dawei, Virgilio Centeno i Hengxu Zhang. "Aspects on Relative Phase Angle Measurement". W 2007 IEEE Power Engineering Society General Meeting. IEEE, 2007. http://dx.doi.org/10.1109/pes.2007.385502.

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Huang, Yongshan, Hongxu Ma, Qing Wei i Honglei An. "An Angle-Bias Based Gait Phase Estimation using Thigh Angle Information". W 2021 China Automation Congress (CAC). IEEE, 2021. http://dx.doi.org/10.1109/cac53003.2021.9728426.

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Liu Yunjing i Cao Yali. "Optimization of phase angle measurement unit placement". W 2009 Chinese Control and Decision Conference (CCDC). IEEE, 2009. http://dx.doi.org/10.1109/ccdc.2009.5192742.

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Dillenz, Alexander, Thomas Zweschper i Gerhard Busse. "Burst phase-angle thermography with elastic waves". W AeroSense 2002, redaktorzy Xavier P. Maldague i Andres E. Rozlosnik. SPIE, 2002. http://dx.doi.org/10.1117/12.459609.

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Cognion, Rita L. "Large phase angle observations of GEO satellites". W SPIE Defense, Security, and Sensing, redaktorzy Khanh D. Pham, Joseph L. Cox, Richard T. Howard i Genshe Chen. SPIE, 2013. http://dx.doi.org/10.1117/12.2014623.

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Pereira, S. F., J. F. P. Spronck, V. G. Kutchoukov i H. A. Bachor. "Angle and phase coding in optical recording". W Optical Data Storage 2010, redaktorzy Susanna Orlic i Ryuichi Katayama. SPIE, 2010. http://dx.doi.org/10.1117/12.859123.

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Wang, Shuai, Jiaying Wang, Haihang Xu, Chuang Wang, Yuchen Xue i Hongwei Lin. "Development of Phase Angle Cable Identification Instrument". W 2021 IEEE International Conference on Power, Intelligent Computing and Systems (ICPICS). IEEE, 2021. http://dx.doi.org/10.1109/icpics52425.2021.9524274.

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Raporty organizacyjne na temat "Phase angle"

Turgel, R. S., J. M. Mulrow i D. F. Vecchia. NBS phase angle calibration services. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.sp.250-26.

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Turgel, R. S. NBS 50 kHz phase angle calibraion standard. Gaithersburg, MD: National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.tn.1220.

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AIR FORCE TEST PILOT SCHOOL EDWARDS AFB CA. Volume II. Flying Qualities Flight Testing Phase. Chapter 10: High Angle of Attack. Fort Belvoir, VA: Defense Technical Information Center, maj 1991. http://dx.doi.org/10.21236/ada319981.

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Jacobs, Patrick W. M., Арнольд Юхимович Ків, Володимир Миколайович Соловйов i Tatyana N. Maximova. Radiation-stimulated processes in Si surface layers. Transport and Telecommunication Institute, 1999. http://dx.doi.org/10.31812/0564/1023.

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Molecular dynamics computer simulations have been performed to study the character o disordering of atom configurations in Si surface layers. The relaxation of free Si surface was investigated. The main structural parameters were calculated, such as a distribution of angle between chemical bonds, the density of dangling bonds, structural peculiarities of Si surface layers and radiation effects. It was concluded that Si surface at real conditions is a disordered phase similar to a-Si

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Allen, A., S. Santoso i E. Muljadi. Algorithm for Screening Phasor Measurement Unit Data for Power System Events and Categories and Common Characteristics for Events Seen in Phasor Measurement Unit Relative Phase-Angle Differences and Frequency Signals. Office of Scientific and Technical Information (OSTI), sierpień 2013. http://dx.doi.org/10.2172/1096101.

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Pullammanappallil, Pratap, Haim Kalman i Jennifer Curtis. Investigation of particulate flow behavior in a continuous, high solids, leach-bed biogasification system. United States Department of Agriculture, styczeń 2015. http://dx.doi.org/10.32747/2015.7600038.bard.

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Recent concerns regarding global warming and energy security have accelerated research and developmental efforts to produce biofuels from agricultural and forestry residues, and energy crops. Anaerobic digestion is a promising process for producing biogas-biofuel from biomass feedstocks. However, there is a need for new reactor designs and operating considerations to process fibrous biomass feedstocks. In this research project, the multiphase flow behavior of biomass particles was investigated. The objective was accomplished through both simulation and experimentation. The simulations included both particle-level and bulk flow simulations. Successful computational fluid dynamics (CFD) simulation of multiphase flow in the digester is dependent on the accuracy of constitutive models which describe (1) the particle phase stress due to particle interactions, (2) the particle phase dissipation due to inelastic interactions between particles and (3) the drag force between the fibres and the digester fluid. Discrete Element Method (DEM) simulations of Homogeneous Cooling Systems (HCS) were used to develop a particle phase dissipation rate model for non-spherical particle systems that was incorporated in a two-fluid CFDmultiphase flow model framework. Two types of frictionless, elongated particle models were compared in the HCS simulations: glued-sphere and true cylinder. A new model for drag for elongated fibres was developed which depends on Reynolds number, solids fraction, and fibre aspect ratio. Schulze shear test results could be used to calibrate particle-particle friction for DEM simulations. Several experimental measurements were taken for biomass particles like olive pulp, orange peels, wheat straw, semolina, and wheat grains. Using a compression tester, the breakage force, breakage energy, yield force, elastic stiffness and Young’s modulus were measured. Measurements were made in a shear tester to determine unconfined yield stress, major principal stress, effective angle of internal friction and internal friction angle. A liquid fludized bed system was used to determine critical velocity of fluidization for these materials. Transport measurements for pneumatic conveying were also assessed. Anaerobic digestion experiments were conducted using orange peel waste, olive pulp and wheat straw. Orange peel waste and olive pulp could be anaerobically digested to produce high methane yields. Wheat straw was not digestible. In a packed bed reactor, anaerobic digestion was not initiated above bulk densities of 100 kg/m³ for peel waste and 75 kg/m³ for olive pulp. Interestingly, after the digestion has been initiated and balanced methanogenesis established, the decomposing biomass could be packed to higher densities and successfully digested. These observations provided useful insights for high throughput reactor designs. Another outcome from this project was the development of low cost devices to measure methane content of biogas for off-line (US$37), field (US$50), and online (US$107) applications.

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Goldberg, Edward. Structure of the Phage T4 Tail Fiber Angle. Fort Belvoir, VA: Defense Technical Information Center, lipiec 2002. http://dx.doi.org/10.21236/ada403938.

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HEFNER, Robert. IHSAN ETHICS AND POLITICAL REVITALIZATION Appreciating Muqtedar Khan’s Islam and Good Governance. IIIT, październik 2020. http://dx.doi.org/10.47816/01.001.20.

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Ours is an age of pervasive political turbulence, and the scale of the challenge requires new thinking on politics as well as public ethics for our world. In Western countries, the specter of Islamophobia, alt-right populism, along with racialized violence has shaken public confidence in long-secure assumptions rooted in democracy, diversity, and citizenship. The tragic denouement of so many of the Arab uprisings together with the ascendance of apocalyptic extremists like Daesh and Boko Haram have caused an even greater sense of alarm in large parts of the Muslim-majority world. It is against this backdrop that M.A. Muqtedar Khan has written a book of breathtaking range and ethical beauty. The author explores the history and sociology of the Muslim world, both classic and contemporary. He does so, however, not merely to chronicle the phases of its development, but to explore just why the message of compassion, mercy, and ethical beauty so prominent in the Quran and Sunna of the Prophet came over time to be displaced by a narrow legalism that emphasized jurisprudence, punishment, and social control. In the modern era, Western Orientalists and Islamists alike have pushed the juridification and interpretive reification of Islamic ethical traditions even further. Each group has asserted that the essence of Islam lies in jurisprudence (fiqh), and both have tended to imagine this legal heritage on the model of Western positive law, according to which law is authorized, codified, and enforced by a leviathan state. “Reification of Shariah and equating of Islam and Shariah has a rather emaciating effect on Islam,” Khan rightly argues. It leads its proponents to overlook “the depth and heights of Islamic faith, mysticism, philosophy or even emotions such as divine love (Muhabba)” (13). As the sociologist of Islamic law, Sami Zubaida, has similarly observed, in all these developments one sees evidence, not of a traditionalist reassertion of Muslim values, but a “triumph of Western models” of religion and state (Zubaida 2003:135). To counteract these impoverishing trends, Khan presents a far-reaching analysis that “seeks to move away from the now failed vision of Islamic states without demanding radical secularization” (2). He does so by positioning himself squarely within the ethical and mystical legacy of the Qur’an and traditions of the Prophet. As the book’s title makes clear, the key to this effort of religious recovery is “the cosmology of Ihsan and the worldview of Al-Tasawwuf, the science of Islamic mysticism” (1-2). For Islamist activists whose models of Islam have more to do with contemporary identity politics than a deep reading of Islamic traditions, Khan’s foregrounding of Ihsan may seem unfamiliar or baffling. But one of the many achievements of this book is the skill with which it plumbs the depth of scripture, classical commentaries, and tasawwuf practices to recover and confirm the ethic that lies at their heart. “The Quran promises that God is with those who do beautiful things,” the author reminds us (Khan 2019:1). The concept of Ihsan appears 191 times in 175 verses in the Quran (110). The concept is given its richest elaboration, Khan explains, in the famous hadith of the Angel Gabriel. This tradition recounts that when Gabriel appeared before the Prophet he asked, “What is Ihsan?” Both Gabriel’s question and the Prophet’s response make clear that Ihsan is an ideal at the center of the Qur’an and Sunna of the Prophet, and that it enjoins “perfection, goodness, to better, to do beautiful things and to do righteous deeds” (3). It is this cosmological ethic that Khan argues must be restored and implemented “to develop a political philosophy … that emphasizes love over law” (2). In its expansive exploration of Islamic ethics and civilization, Khan’s Islam and Good Governance will remind some readers of the late Shahab Ahmed’s remarkable book, What is Islam? The Importance of Being Islamic (Ahmed 2016). Both are works of impressive range and spiritual depth. But whereas Ahmed stood in the humanities wing of Islamic studies, Khan is an intellectual polymath who moves easily across the Islamic sciences, social theory, and comparative politics. He brings the full weight of his effort to conclusion with policy recommendations for how “to combine Sufism with political theory” (6), and to do so in a way that recommends specific “Islamic principles that encourage good governance, and politics in pursuit of goodness” (8).

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Distinguishing motor starts from short circuits through phase-angle measurements. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, marzec 1997. http://dx.doi.org/10.26616/nioshpub97120.

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[Construction of a small angle neutron scattering spectrometer for investigation of microemulsions and micellar solutions in bulk, in porous materials and under shear]. Progress report [Phase 1, July 1, 1990--June 30, 1993]. Office of Scientific and Technical Information (OSTI), wrzesień 1993. http://dx.doi.org/10.2172/10176578.

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