Literatura científica selecionada sobre o tema "Spur"

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Artigos de revistas sobre o assunto "Spur"

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Tombesi, Sergio, Bruce D. Lampinen, Samuel Metcalf, and Theodore M. DeJong. "Spur Fruit Set Is Negatively Related with Current-year Spur Leaf Area in Almond." HortScience 50, no. 2 (2015): 322–25. http://dx.doi.org/10.21273/hortsci.50.2.322.

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Almond spurs are known to be the primary bearing unit in almond tree and are subject to alternate bearing. Fruits are a strong sink in bearing spurs and can influence spur leaf growth. At the same time the percent of flowers that set fruit on a spur (spur relative fruit set) could be influenced by the competition among multiple flowers/fruits borne on the same spur as well as by limited leaf area on the same spur. The aim of the present work was to investigate the relationship between current-year spur leaf area and spur absolute and relative fruit set. Approximately 2400 spurs were tagged and
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Heerema*, Richard J., Ted M. De Jong, and Steven A. Weinbaum. "Almond Spur Autonomy: Leaf Growth, Floral Initiation and Spur Survival." HortScience 39, no. 4 (2004): 851B—851. http://dx.doi.org/10.21273/hortsci.39.4.851b.

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Spurs are the primary bearing unit in mature `Nonpareil' almond (Prunus dulcis (Mill.) D.A. Webb) trees. Our objective was to determine whether almond spurs behave autonomously with respect to various biological activities throughout the season. If autonomous, a spur's carbohydrate demands are met primarily by its own leaves and, therefore, the sink to source ratio of the spur itself is expected to be closely linked to its growth and development. In these experiments almond spurs differing in leaf area and/or fruit number were monitored for leaf development, fruit set, floral initiation, spur
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Gezer, H. H., O. Pehlivan, and M. T. Duruöz. "AB0991 RADIOGRAPHIC EVALUATION OF FOOT SPURS IN SPONDYLOARTHRITIS." Annals of the Rheumatic Diseases 82, Suppl 1 (2023): 1716–17. http://dx.doi.org/10.1136/annrheumdis-2023-eular.4526.

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BackgroundAlthough bone spurs are frequently seen in non-inflammatory diseases, they can also be seen with inflammation of the enthesis areas, especially in spondyloarthritis (SpA).ObjectivesTo investigate the radiological evaluation of foot spurs in SpA and compare the characteristics between the SpA and degenerative diseases.MethodsThis ongoing study included 168 (124 women) patients with radiographic plantar or achilles spur. Age, disease duration, and body mass indexes were recorded. Patients were categorized with inflammatory [non-radiographic SpA (nr-AxSpA), radiographic SpA (r-AxSpA), p
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Rom, Curt R., and Bruce Barritt. "Spur Development of `Delicious' Apple as Influenced by Position, Wood Age, Strain, and Pruning." HortScience 25, no. 12 (1990): 1578–81. http://dx.doi.org/10.21273/hortsci.25.12.1578.

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The role of spur leaves in bud and fruit development on two spur-type `Delicious' apple strains (Malus domestica Borkh.) and factors affecting spur development were studied. Reducing spur leaf area on vegetative spurs in August reduced the number of spurs that flowered the following year but did not affect flower size. On spurs that did flower, leaf area reduction the previous year did not influence leaf number or area, but the bourse shoot leaf area was reduced. Spur bud diameter, leaf area, size, specific leaf weight (SLW), and leaf dry weight were larger on 2-year-old vegetative spurs than
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Barritt, Bruce H., Curt R. Rom, Kurt R. Guelich, S. R. Drake, and Marc A. Dilley. "Canopy Position and Light Effects on Spur, Leaf, and Fruit Characteristics of ‘Delicious’ Apple." HortScience 22, no. 3 (1987): 402–5. http://dx.doi.org/10.21273/hortsci.22.3.402.

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Abstract Spur leaf and fruit characteristics at harvest were measured near the central leader at 1, 2, and 3 m above ground on 17-year-old trees of ‘Oregon Spur Delicious’ apple (Malus domestica Borkh.). Percentages of full sunlight at 1 (bottom), 2 (middle), and 3 m (top) positions were 9, 23, and 48, respectively. Vegetative spurs at the top had greater average leaf dry weight, total leaf number, leaf area, leaf dry weight per spur, specific leaf weight (SLW), and bud diameter than spurs at the bottom. Fruiting spurs at the top had greater leaf dry weight, leaf dry weight per spur, SLW, bud
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Vaishnav, Dr Devanshi, Dr Dipali Trivedi, and Dr Jyoti Bhardwaj. "Study of calcaneal spur and its correlation with the talar articular facets of calcanei." December 2022 14, no. 2 (2022): 135–39. http://dx.doi.org/10.56018/bjkines20221220.

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Background & aims: A spur is bony outgrowth at the site of attachment of a ligament or tendon into bone. The aim of this study is to analyse the incidence of calcaneal spur in relation to morphological variations of talar articular facets of calcaneus. Material & Method: Study comprised of 350 dry adult calcanei of unknown age and sex from Department of Anatomy, B. J. Medical College, Ahmedabad. Calcanei were classified according to its talar articular facets and compare its relation with the calcaneal spur. Result: Out of the 350 calcanei 128 presented with spurs among them planter sp
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Rom, Curt R., and David C. Ferree. "The Influence of Fruiting and Shading of Spurs and Shoots on Spur Performance." Journal of the American Society for Horticultural Science 111, no. 3 (1986): 352–56. http://dx.doi.org/10.21273/jashs.111.3.352.

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Abstract Leaves of spurs and/or shoots of small fruiting ‘Starkrimson Delicious’ apple trees were exposed to light or shade treatments from 60 days after petal fall until fruit maturity. Shading spurs reduced spur leaf photosynthesis (Pn) and transpiration (Tr), but shading shoots had no effect on spur leaf Pn. There was no difference between fruiting and nonfruiting spur Pn and Tr. Shading shoots reduced fruit growth and delayed maturity, but shading spurs had no effect on either. Fruiting reduced—but did not eliminate—spur flowering the following year. Light conditions late in the season had
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Arshad, Z., A. Ammar, M. Arshad, et al. "Association between Achilles and Plantar Calcaneal Spur in Pakistani Population Presenting with Pain." Pakistan Journal of Medical and Health Sciences 15, no. 6 (2021): 1259–61. http://dx.doi.org/10.53350/pjmhs211561259.

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Aim: To evaluate the prevalence and associationbetween Achilles and plantar calcaneal spurs in Pakistani population. Study design: Cross sectional study. Place and duration of study: The study was conducted in the radiology department Combined Military Hospital Lahore from October 2020 to December 2020. Methodology: Three hundred and thirty five patients were enrolled. The age and sex of the patients were recorded. Lateral foot and/ or ankle radiographs were evaluated for presence of calcaneal spurs. Results:Mean age 38 years.There were 268 (80%) males and 67 (20%) females. 30.7% patients had
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Robinson, Terence L., and Zhongbo Ren. "EFFECTS OF CHRONIC SHADE AND FOLIAR NUTRIENT SPRAYS ON APPLE SPUR VIGOR AND PERFORMANCE." HortScience 25, no. 9 (1990): 1113c—1113. http://dx.doi.org/10.21273/hortsci.25.9.1113c.

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Eleven year-old Empire/M.7 apple trees were shaded continously for 4 years with half-tree shading cages. Shading reduced primary spur leaf duration, bourse shoot leaf area, specific leaf weight, spur diameter and bud diameter. Over the four years, shaded spurs continued to increase in length but spur diameter increased very little resulting in long and brittle spurs. However, shaded spurs continued to flower and set fruit. Leaf area development was similar inside and outside the cages at one week after bloom but by 2 weeks after bloom, spurs inside the cages had significantly lower leaf area.
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Travers, Steven E., Ethan J. Temeles, and Irvin Pan. "The relationship between nectar spur curvature in jewelweed (Impatiens capensis) and pollen removal by hummingbird pollinators." Canadian Journal of Botany 81, no. 2 (2003): 164–70. http://dx.doi.org/10.1139/b03-014.

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Floral nectar spurs are hypothesized to have had a major role in the evolution of floral diversity and plant-pollinator coadaptation. We examined variation in the degree of nectar spur curvature in two species of jewelweed (Impatiens capensis and Impatiens pallida) pollinated by different sets of pollinators. To distinguish between adaptive and nonadaptive explanations for between-species differences in curvature, we determined the relationship between spur curvature and pollen removal, which is one estimate of male reproductive success. Spur curvature exhibited considerable variation both wit
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Teses / dissertações sobre o assunto "Spur"

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Flodin, Anders. "Wear of spur and helical gears." Doctoral thesis, KTH, Machine Design, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2986.

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Meissner, Birgit. "Dem teuersten Gemälde auf der Spur." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-60953.

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In der SLUB Dresden wird durch die DFG u. a. das Sondersammelgebiet „Zeitgenössische Kunst seit 1945“ gefördert. Ende Juli haben sich mehrere StudentInnen zu einem Workshop angemeldet: „Dem teuersten Gemälde der Welt auf der Spur“. Bei diesem Workshop werden von den Teilnehmern Kataloge und Datenbanken auf Informationen zu Jackson Pollock und zu dem sensationellen Verkauf seines Bildes abgefragt. Vor allem soll geprüft werden, wie zeitaufwändig die Suche in verschiedenen Datenbanken und Katalogen ist.
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Ozturk, Fatih Mehmet. "Optimum Design Of Multistep Spur Gearbox." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606749/index.pdf.

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Optimum design of multistep gearbox, since many high-performance power transmission applications (e.g., automotive, space industry) require compact volume, has become an important interest area. This design application includes more complicated problems that are not taken into account while designing single stage gear drives. Design applications are generally made by trial and error methods depending on the experience and the intuition of the designer. In this study, using Visual Basic 6.0, an interactive program is developed for designing multistep involute standard and nonstandard spur gearb
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Petry-Johnson, Travis T. "Experimental investigation of spur gear efficiency." Connect to resource, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1209585550.

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Дядечко, Алла Миколаївна, Алла Николаевна Дядечко, Alla Mykolaivna Diadechko, and G. Tkachenko. "Spur of competition to meet economic crisis." Thesis, Вид-во СумДУ, 2009. http://essuir.sumdu.edu.ua/handle/123456789/16935.

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To support competition on the national level we suggest realizing of the following measures: providing of tax remissions to the most competitive producers, supporting innovations and subsidizing of the most efficient innovative projects throught open competition, diffusion of the policy of attracting skilled workers with high educational level, realization of government projects through organization competition credits at the interest rates. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/16935
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Bommisetty, Venkata Satya Naga Karthik. "FINITE ELEMENT ANALYSIS OF SPUR GEAR SET." Cleveland State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=csu1337268681.

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Kneer, Markus. "Die dunkle Spur im Denken : Rationalität und Antijudaismus /." Paderborn : F. Schöningh, 2003. http://catalogue.bnf.fr/ark:/12148/cb39048335v.

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Reinboth, Judith, Frank Britsche, and Werner Schneider. "Jüdischen Musikern in Leipzig auf der Spur: Didaktische Materialien: Pädagogische Handreichung zum „Notenbogen-Entdeckerpass – Jüdischen Musikern in Leipzig auf der Spur“." Notenspur Leipzig e.V, 2018. https://slub.qucosa.de/id/qucosa%3A35859.

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Der Notenbogen-Entdeckerpass für Kinder und Jugendliche, der Möglichkeiten eröffnet, zu jüdischen Musikern in Leipzig zu forschen, Neues zu entdecken, der Notenspur zu folgen und viele weitere Impulse gibt, steht seit einiger Zeit zur Verfügung. Nun gilt es, die Kinder und Jugendlichen zu unterstützen, sowohl im schulischen Kontext als auch durch Freizeiteinrichtungen, bei denen die kulturelle Bildung im Mittelpunkt steht. Zum Entdeckerpass gibt es jetzt die vorliegende Handreichung. Sie beinhaltet didaktische Hinweise für ausgewählte Stationen, zahlreiche Arbeitsblätter als Kopiervorlagen f
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Boberg, Elin. "Evolution of Spur Length in a Moth-pollinated Orchid." Doctoral thesis, Uppsala universitet, Ekologisk botanik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-113086.

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There is considerable evidence that pollinator shifts can explain many differences in flower morphology between closely related plant species, but the extent to which pollinator shifts can explain the maintenance of among-population variation in floral traits within species is poorly known. In this thesis, I combined comparative and experimental approaches to examine the evolution of floral traits in the moth-pollinated orchid Platanthera bifolia. More specifically, I investigated (1) the relationship between flower and pollinator morphology, (2) phenotypic selection on morphology and phenolog
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Chitta, Sudeendra. "Elastohydrodynamic lubrication in spur gear and helical gear contacts." Thesis, KTH, Maskinkonstruktion (Avd.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-151246.

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The gears in a transmission are lubricated to prevent their premature failure as a result of pitting and wear on the tooth surfaces. Furthermore, the lubricant also limits the rise in surface temperature of the gears, which could otherwise lead to failure as a result of scuffing. The purpose of this thesis was to construct a fairly realistic theoretical lubrication model for spur and helical gears, the primary output parameters of this model being film thickness and flash temperatures, which would help in the identification of areas on the gear tooth surface prone to the aforementioned modes o
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Livros sobre o assunto "Spur"

1

Arnegard, Iver. Whip & spur. Gold Line Press, 2014.

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Wardman, Gordon. Crispin's spur. Secker & Warburg, 1985.

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Wardman, Gordon. Crispin's spur. Secker & Warburg, 1985.

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Steele, Tex. Vengeance spur. J. Curley, 1989.

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Birnie, Danzker Jo-Anne, Dornacher Pia, Gruppe SPUR, Museum Villa Stuck, Museum Lothar Fischer, and Kunsthalle St Annen, eds. Gruppe SPUR. Villa Stuck, 2006.

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1930-2017, Irving Clifford, ed. Spur: Roman. Scherz, 1997.

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Litvin, F. L. Spur gears: Optimal geometry, methods for generation and tooth contact analysis (TCA) program. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1988.

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V, Zaretsky Erwin, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Effect of five lubricants on life of AISI 9310 spur gears. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985.

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V, Zaretsky Erwin, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, eds. Effect of five lubricants on life of AISI 9310 spur gears. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985.

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Hirt, Manfred Christian Otto. Stresses in spur gear teeth and their strength as influenced by fillet radius: Doctorate dissertation. American Gear Manufacturers Association, 1985.

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Capítulos de livros sobre o assunto "Spur"

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Gooch, Jan W. "Spur." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11096.

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Heppner, John B., David B. Richman, Steven E. Naranjo, et al. "Spur." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_4353.

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Errichello, Robert. "Spur Gears." In Encyclopedia of Tribology. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_15.

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Rao, J. S. "Spur Gears." In Kinematics of Machinery Through HyperWorks. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1156-3_6.

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Wagner, Silvan. "Spur, Fährte." In Literarische Orte in deutschsprachigen Erzählungen des Mittelalters, edited by Tilo Renz, Monika Hanauska, and Mathias Herweg. De Gruyter, 2018. http://dx.doi.org/10.1515/9783050093918-036.

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Manik, Dhanesh N. "Spur Gears." In Fundamentals of Mechanisms and Machines. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1810-8_3.

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Ugural, Ansel C. "Spur Gears." In Mechanical Engineering Design, 3rd ed. CRC Press, 2022. http://dx.doi.org/10.1201/9781003251378-14.

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Hargitai, Henrik. "Spur and Gully." In Encyclopedia of Planetary Landforms. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_634-1.

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Manshausen, Udo. "Die Ich-Spur." In Wüstenväter für Manager. Gabler Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-86483-3_6.

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Kerler, Frieder. "Spur, Rekonstruktion, Medium." In Medien & Bildung. VS Verlag für Sozialwissenschaften, 2011. http://dx.doi.org/10.1007/978-3-531-92082-5_18.

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Trabalhos de conferências sobre o assunto "Spur"

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Delgado, Irebert, and Michael Hurrell. "The Jetting Phenomena in Meshed Spur Gears." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12869.

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Rotorcraft gearbox transmissions are required to efficiently transfer power from the turbine engine to the main and tail rotor blades. Losses in transmission efficiency impact mission payload and aircraft range. These systems are expected to deliver high power with high gear pitch line velocities. More recently, shrouding has been employed to reduce windage power losses associated with the high gear rotational speeds. However, recent experimental results from tests conducted by the authors show the negative impact of close clearance shrouds on windage power loss, particularly at the meshed reg
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Delgado, Irebert, and Michael Hurrell. "Experimental Investigation of Shrouding on Meshed Spur Gear Windage Power Loss." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12146.

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Windage power loss in high-speed gearboxes result in efficiency losses and increased heating due to drag on the gear teeth. Meshed spur gear windage power loss test results are presented at ambient oil inlet temperatures both with and without shrouding. The rate of windage power loss is observed to increase above 10,000 ft./min., gear surface speed, similar to results presented in the literature. Shrouding is observed to become more effective above 15,000 ft./min., decreasing power loss by 10% at 25,000 ft./min. The need for gearbox oil drain slots limits the effectiveness of shrouding on redu
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Wang, Zijun, Biao Li, Teng Wang, Hong Li, Ruiting Niu, and Jinpeng Lin. "A Low Spur Wideband PLL in 65nm CMOS." In 2024 IEEE 17th International Conference on Solid-State & Integrated Circuit Technology (ICSICT). IEEE, 2024. https://doi.org/10.1109/icsict62049.2024.10831623.

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Bebenita, Michael, Florian Brandner, Manuel Fahndrich, et al. "SPUR." In the ACM international conference. ACM Press, 2010. http://dx.doi.org/10.1145/1869459.1869517.

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Osakue, Edward E. "Simplified Spur Gear Design." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65426.

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A simplified design method (SDM) for spur gears is presented. The Hertz contact stress and Lewis root bending stress capacity models for spur gears have been reformulated and formatted into simplified forms. A scheme is suggested for estimating the AGMA J-factor in Lewis root bending stress for spur gears from a single curve for both pinion and gear instead of the conventional two curves. A service load factor is introduced in gear design that accounts for different conventional rated load modifier factors. It represents a magnification factor for the rated load in a gear design problem. Two d
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Vantsevich, Vladimir V. "Spur Bevel Differential Dynamics." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1218.

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Ho, Cheng-Ru, and Mike Shuo-Wei Chen. "10.5 A digital PLL with feedforward multi-tone spur cancelation loop achieving −73dBc fractional spur and −110dBc Reference Spur in 65nm CMOS." In 2016 IEEE International Solid-State Circuits Conference (ISSCC). IEEE, 2016. http://dx.doi.org/10.1109/isscc.2016.7417971.

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Lerach, Lothar. "Integrated Circuits Spur Digital Telecommunication." In 11th European Solid State Circuits Conference. IEEE, 1985. http://dx.doi.org/10.1109/esscirc.1985.5468174.

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Faggioni, M., F. Pellicano, A. Andrisano, and G. Bertacchi. "Dynamic Optimization of Spur Gears." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34658.

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This paper presents a global optimization method able to find gear profile modifications that minimize vibrations. A non linear dynamic model is used to study the vibrational behavior; the dynamic model is validated using data available in literature. The optimization method takes into account the influence of torque levels both on the static and the dynamic response. Therefore, two different objective functions are considered; the first one is based on static analysis and the second one is based on the dynamic behavior of a lumped mass system. The procedure can find the optimal profile modifi
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SAVAGE, M., B. MACKULIN, H. COE, and J. COY. "Maximum life spur gear design." In 27th Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-2021.

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Relatórios de organizações sobre o assunto "Spur"

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Horne, Peter. New Metaphors Spur Innovation. Patricia Seybold Group, 2013. http://dx.doi.org/10.1571/psgp03-07-13cc.

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Wood, David A., Susan J. Eggers, and Garth Gibson. SPUR Memory System Architecture. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada619784.

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Kortum, Samuel, and Josh Lerner. Does Venture Capital Spur Innovation? National Bureau of Economic Research, 1998. http://dx.doi.org/10.3386/w6846.

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Bekaert, Geert, Campbell Harvey, and Christian Lundblad. Does Financial Liberalization Spur Growth? National Bureau of Economic Research, 2001. http://dx.doi.org/10.3386/w8245.

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Gorodnichenko, Yuriy, Jan Svejnar, and Katherine Terrell. Does Foreign Entry Spur Innovation? National Bureau of Economic Research, 2015. http://dx.doi.org/10.3386/w21514.

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Hombert, Johan, Antoinette Schoar, David Sraer, and David Thesmar. Can Unemployment Insurance Spur Entrepreneurial Activity? National Bureau of Economic Research, 2014. http://dx.doi.org/10.3386/w20717.

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Coe, Harold H. Spur-Gear Optimization Using SPUROPT Computer Program. Defense Technical Information Center, 1991. http://dx.doi.org/10.21236/ada241379.

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Jensen, Debby. Control Implementation for the SPUR Floating Point Coprocessor. Defense Technical Information Center, 1987. http://dx.doi.org/10.21236/ada604004.

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See, Justin. How young people’s anger might spur climate action. Edited by Lachlan Guselli. Monash University, 2024. http://dx.doi.org/10.54377/2df6-17df.

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Langer, Ashley, and Derek Lemoine. Designing Dynamic Subsidies to Spur Adoption of New Technologies. National Bureau of Economic Research, 2018. http://dx.doi.org/10.3386/w24310.

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