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Academic literature on the topic 'Whorl pattern'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Whorl pattern"

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Abdul, Nishath Sayed, Teef Adel Gholoum, Latefah Abdulrahman Alali, Fatmah Tarahib Almuteri, Estabraq Osama Almeshal, and Wadha Hassan Alsehali. "Dermatoglyphics: A Forensic Tool to Predict Type 2 Diabetes Mellitus and Gender Identification among Kuwaiti Population: A Cross-Sectional Observational Study." Journal of Pharmacy and Bioallied Sciences 17, Suppl 2 (2025): S1389—S1392. https://doi.org/10.4103/jpbs.jpbs_1687_24.

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ABSTRACT Background: Type 2 diabetes mellitus, with increasing global prevalence and genetic influence, may be predicted using dermatoglyphics, a reliable forensic tool. This study evaluated dermatoglyphic patterns to identify type 2 diabetes in the Kuwaiti population. Materials and Methods: A cross-sectional observational study with 100 participants (50 diabetics, 50 controls) analysed fingerprint patterns (loops, whorls, arches). Results: 500 fingerprints were examined (250 diabetic, 250 control). Among diabetics, there were 21 males (42%) and 29 females (58%), while the control group includ

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Baishya, Anusmita, T. K. S. Rao, Abhishek B. Parmer, and V. R. Patel. "Study of Association between Hair Whorls Pattern, Sex and Temperament in Gir Calves." Journal of Scientific Research and Reports 31, no. 5 (2025): 737–43. https://doi.org/10.9734/jsrr/2025/v31i53069.

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Temperament significantly influences the productivity, welfare, and handling of cattle. This study investigates the relationship between temperament and hair whorl characteristics in Gir calves, focusing on sex-specific behavioral differences. A total of 14 Gir calves (7 males, 7 females) were monitored over 90 days. Temperament was assessed using chute score and flight speed, and hair whorl position and direction were recorded. Results indicated that male calves exhibited lower chute and flight scores, reflecting calmer behavior. In contrast, most female calves showed higher temperament score

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Kwiatkowska, Dorota. "Ontogenetic changes of phyllotaxis in Anagallis arvensis L." Acta Societatis Botanicorum Poloniae 64, no. 4 (2014): 319–25. http://dx.doi.org/10.5586/asbp.1995.041.

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During the ontogeny of <i>Anagallis</i> spontaneous changes of phyllotaxis appear in a regular sequence. The initial decussate pattern is followed by spiral Fibonacci phyllotaxis, this in turn, by a trimerous pattern, and finally Lucas spiral phyllotaxis is formed. In the course of the first and most common phyllotactic transition, from the decussate to spiral Fibonacci pattern, changes in primordia arrangement occur only within a limited sector of the apex circumference. In the complementary sector, primordia emerge as if the decussate phyllotaxis continued. It is likely that simi

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Singh, Arun, and Archana Singh. "Dermatoglyphic Patterns and Body Mass Indices among Medical Students in India: A Cross-sectional Study." Acta Medica International 11, no. 1 (2024): 60–66. http://dx.doi.org/10.4103/amit.amit_20_24.

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Introduction: Obesity is a disorder for which environment and genetic factors are responsible. Many genetical inherited disorders including obesity have been found to have an association with dermatoglyphics. The present study was done to know the dermatoglyphic patterns of fingerprints of obese and nonobese medical students. Materials and Methods: Fingers and palm prints of both the hands of 150 medical students of 18–24 years were collected with the help of ink pad on A4 size of paper. The fingers and palm prints were studied using handheld magnifying lens and their body mass index was calcu

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Dare, Joseph B. "Characterisation of Finger Dermatoglyphics Traits and other Biometric Indices among Health Science Undergraduates of the Osun State University, Nigeria." Pan African Journal of Life Sciences 5, no. 2 (2021): 274–81. http://dx.doi.org/10.36108/pajols/1202.50.0250.

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Background: Finger dermatoglyphics has been useful in diagnosing genetically related diseases and detecting crimes. A cross-sectional study was carried out to establish the relationship between fingerprint traits and biometric indices Methods: Finger dermatoglyphics data were obtained using the ink method among the Health Sciences Students of Osun State University, Osogbo, Nigeria. Finger pattern intensity, finger pattern distribution, and finger ridge counts were measured and compared. These were done by counting and classifying ridge patterns and pattern configuration of arches, loops, and w

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Checa, Antonio G., Takashi Okamoto, and Helmut Keupp. "Abnormalities as natural experiments: a morphogenetic model for coiling regulation in planispiral ammonites." Paleobiology 28, no. 1 (2002): 127–38. http://dx.doi.org/10.1666/0094-8373(2002)028<0127:aaneam>2.0.co;2.

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Exceptional examples of planispiral ammonites that were infested by epizoans during life display alterations of their normal coiling. Most commonly, the epizoan(s) settled on the venter of the ammonite and constituted an obstacle for the whorl tube grown one whorl later; this caused lateral deviation of the whorl tube and tilting of the ammonoid because of changes in the hydrostatic condition; from here on, the whorl tube periodically crossed the venter of the preceding whorl, thereby producing a zigzag coiling pattern. Some epizoans, which were particularly centered on the midventer, provoked

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Igbinehi Elijah O, Ojo Gideon B, Thomas Magnus A, and Dawodu Simon E. "Sex determination based on footprint ratio and comparison of toe print pattern in the male and female Nigerian students (A case study of Bowen University students)." International Journal of Biological and Pharmaceutical Sciences Archive 2, no. 1 (2021): 164–75. http://dx.doi.org/10.53771/ijbpsa.2021.2.1.0081.

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Dermatoglyphics can be described as the study of the patterns of ridges on the skin of the fingers, palms, toes, and soles. These patterns are of interest in anthropology, criminology, and medicine. The skin on the ventral sides of the hands and the plantar sides of the feet is exclusively designed and is corrugated with the ridges and configurations which are functionally useful. Subjects for the study consisted of 100 persons, 50 males and 50 females, all from Bowen University, Iwo, Osun state of Nigeria and they were all students. The age range was 15-24 years of age. The feature being stud

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Harrison, L. G., K. T. Graham, and B. C. Lakowski. "Calcium localization during Acetabularia whorl formation: evidence supporting a two-stage hierarchical mechanism." Development 104, no. 2 (1988): 255–62. http://dx.doi.org/10.1242/dev.104.2.255.

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The giant single-celled marine alga Acetabularia mediterranea (or A. acetabulum) repeatedly generates whorls of hairs at its growing tip. Theoretical considerations, and physicochemical analysis of the effect of extracellular calcium concentration on hair spacing, have suggested a two-stage mechanism, in which whorl pattern is preceded by a simple annular pattern. This analysis requires that, at the time of whorl determination, morphogenetically related calcium should still be distributed in the first-stage annular pattern. This paper reports studies of calcium distribution at closely spaced d

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Jean, Béguinot. "A Renewed Understanding of Shell-shape Diversity among Marine Gastropod Species: Invariance and Covariance between Geometrical Parameters in Conispirally Coiled Shells." Annual Research & Review in Biology 13, no. 2 (2017): 1–17. https://doi.org/10.9734/ARRB/2017/33935.

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Approximately conispirally coiled shells make the bulk of shell structure among marine gastropod species, apart from those shells with strongly overlapping whorls (typical, in particular, of Cones, Cowries and the like). By selecting appropriately the set of geometrical parameters appropriate to describe the interspecific variations of shell-shape, an original pattern of covariances and independences was unveiled between these parameters, providing, in turn, a partly renewed understanding of the interspecific diversification of shell-shapes among conispirally coiled marine gastropods. This nov

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Atiku, I. A., M. Tanko, L. H. Adamu, M. K. Rayyan, and B. Danborno. "Fingerprint Pattern of Fulani and Higgi ethnic groups in Michika LGA, Adamawa State, Nigeria." Dutse Journal of Pure and Applied Sciences 10, no. 1a (2024): 241–48. http://dx.doi.org/10.4314/dujopas.v10i1a.24.

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Developing countries experience surge of insurgency, banditry, cybercrime and other related violence. Criminals often go undetected because of poor forensic capabilities in human detection. Fingerprint features have been very effective in establishment of identity. The aim of this study was to determine fingerprint pattern of Fulani and Higgi ethnic groups of Michika, Adamawa State, Nigeria. A total of 5020 valid fingerprints patterns were captured using live fingerprint scanner. These included; 1230 Fulani male; 1250 Fulani female; 1280 Higgi male; 1260 Higgi female. SPSS version 26.0 statist

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Books on the topic "Whorl pattern"

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Rodríguez, Carlos Armando. Lo cotidiano y lo simbólico en el arte geométrico prehispánico del Valle Medio del Río Cauca, 1000-1300 D.C. Instituto Vallecaucano de Investigaciones Científicas, 1993.

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Book chapters on the topic "Whorl pattern"

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Paul, Sharad P. "Golden Spirals and Scalp Whorls: Nature’s Patterns and the Designing of a New Scalp Flap." In Biodynamic Excisional Skin Tension Lines for Cutaneous Surgery. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71495-0_6.

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Allison, Penelope M. "Unit I 10,12." In The Insula of the Menander at Pompeii. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199263127.003.0020.

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Giornali degli Scavi A,VI,7 (Apr. 1929–Dec. 1935): 174–5 (11–12 Apr. 1932) Elia 1934: 339–40. The recording of the excavation for this area is very summary, recording the height at which objects were found but with no mention of the condition of the volcanic deposit. Description: fragments from the neck of an amphora with an inscription in red on each side. Inscription: a. ‘ΛAX’; b. ‘F’. Present location: unknown, not inventoried at time of excavation. Reference: inscription: Della Corte 1933: 317, no. 334. Discussion: see discussion on amphora. Dimensions: diam.: 35 mm; h.: 6 mm. Description:

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Lillo-Martin, Diane. "The Modular Effects of Sign Language Acquisition." In Relations Of Language And Thought. Oxford University PressNew York, NY, 1997. http://dx.doi.org/10.1093/oso/9780195100570.003.0003.

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Abstract One of the topics that introductory linguistics courses almost always cover is the Sapir-Whorf hypothesis. According to the textbooks, around 1930 Edward Sapir (see Sapir, 1949) and (somewhat later) Benjamin Lee Whorf (Whorf, 1956) made two proposals: “First, that all higher levels of thinking are dependent on language. Second, that the structure of the language one habitually uses influences the manner in which one understands his environment. The picture of the universe shifts from tongue to tongue” (Chase, 1956, p. vi). Careful reviews of this position usually point out that Sapir

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Nair, Megha M., and S. Likitha. "Pattern Recognition in Fingerprint and DNA Analysis." In Forensic Intelligence and Deep Learning Solutions in Crime Investigation. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-9405-2.ch011.

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In forensic science, DNA and fingerprint analysis are crucial methods that are frequently used to identify people and solve criminal cases. DNA analysis matches biological samples from crime scenes with suspects or identifies victims by using the distinct genetic code present in each person's cells. Forensic scientists can examine even minute amounts of DNA using methods like mitochondrial DNA analysis, short tandem repeat (STR) profiling, and polymerase chain reaction (PCR) amplification, which yields highly accurate human identification. Analyzing fingerprints also depends on the distinct pa

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Svenonius, Peter. "The position of adjectives and other phrasal modifiers in the decomposition of DP." In Adjectives and Adverbs. Oxford University PressOxford, 2008. http://dx.doi.org/10.1093/oso/9780199211616.003.0002.

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Abstract Patterns in adjective ordering have long been noted, and have been characterized in impressionistic semantic terms: “inherent” properties are expressed doser to the noun (Whorf 945), or “objective” properties are (Hetzron 1978 J. Such characterizations have proven difficult to evaluate, but cross-linguistic examinations regularly show that similar patterns hold across languages to a striking degree (e.g. Sproat and Shih 1991). Cinque (1994) suggests that these orders can be captured in terms of a layered functional structure in the DP: different layers of nominal structure correspond

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Allchin, Douglas. "Genes R Us." In Sacred Bovines. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190490362.003.0027.

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DNA fingerprints are not prints of fingers. So why the name? The “fingerprint” label, of course, conveys far more than some pattern of swirls, whorls, and arches on the skin. As celebrated in detective lore, fingerprints are emblems of uniqueness. DNA can thus form a “fingerprint” by establishing personal identity. Genes are often characterized as “information.” Thus, DNA “codes for” an organism’s unique traits. In terms of uniqueness and developmental causality, then, genes seem to underlie human identity. Yet with deeper reflection, one might find this commonplace association spurious and mi

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Tomlinson, P. B. "Flower." In The Structural Biology of Palms. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198545729.003.0013.

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Abstract Palm flowers can be described in terms of the ‘type’ common to many monocotyledonous families, i.e. with a trimerous construction based on the floral formula three sepals, three petals, six stamens (in two whorls of three), and three carpels. Commonly, there is a bracteole below the flower, a structure that is helpful in interpreting the morphology of the ultimate floral units where these represent condensed monochasia. In palms, the flower is always actinomorphic, the gynoecium superior and each carpel has a single ovule. There is considerable variation of this pattern, some of which

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Olson, Paul A. "Cultural Perception and Great Plains Grasslands." In The Changing Prairie. Oxford University PressNew York, NY, 1995. http://dx.doi.org/10.1093/oso/9780195074109.003.0003.

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Abstract Successive groups of witnesses have observed Plains grasslands, and each has seen them through its own lens and within its own frame. This essay concerns the lenses or frames used by the Plains Indians, who perceived the Plains as a circle; the Coronado group, who saw the Plains in “georgic” (or traditional agricultural) terms; the explorers and explorer-painters of the early nineteenth century who represented the grasslands as if they were a “picturesque” painting; and the late-nineteenth-century settlers who turned the grasslands into epic oceans. These represent, in my view, the ma

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Conference papers on the topic "Whorl pattern"

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Gatlin, Maia, and Cristina Riso. "Predicting Whirl Flutter Bifurcations Using Machine Learning." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-0016.

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This paper investigates the feasibility of using machine learning to predict whirl flutter bifurcation diagrams. The machine learning techniques selected for the study are XGBoost and the long short-term memory neural network. These techniques are selected for their suitability for sequential and nonlinear data. The techniques are investigated for a propeller-nacelle test case with polynomial structural nonlinearities resulting in supercritical or subcritical whirl limit-cycle oscillations. The techniques are trained to learn the bifurcation diagram for the amplitude variation of pitch angle l

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Ehehalt, Ulrich, Eric Hahn, and Richard Markert. "Motion Patterns at Rotor Stator Contact." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84440.

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The present paper discusses the various movement patterns during rotor stator contact. Both rotor and stator are assumed to be flexible damped single degree of freedom systems. The contact is described by a flexible viscoelastic model. Dry friction between rotor and stator is taken into account. Despite strong non-linearity due to contact, rotor unbalance causes purely synchronous motions. However, in some circumstances, the synchronous motion may become unstable and the rotor motion turns into a non-synchronous state, which can be very destructive. Non-synchronous motions include backward whi

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Vishwakarma, Pushpendra Kumar, and Kirti Bhushan Mishra. "Numerical modelling of liquid fuel fire whirl." In International Conference on Fire Safety Engineering Research and Practice. Science Technology and Management Crescent Australia, 2024. https://doi.org/10.71427/icfserp2024/86.

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This work presents the numerical modelling of a fire whirl generated from the liquid fuel. Fire Dynamics Simulator (FDS) was used as a CFD tool to simulate a fire whirl under predefined boundary conditions. A pyrolysis model is utilized to model the evaporation of liquid fuel. Numerical results of the Mass Burning Rate (MBR), flame height (Hf), temperature profiles, velocity contours, and velocity profiles are described. The comparison between a fire whirl (hot flow) and an air whirl (cold flow) reveals an up to 40% increase in the centreline axial velocity due to the buoyancy generated from f

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Nie, Chaoqun. "An Experimental Investigation on Different Radial Loading Distribution and Patterns of Stall Inception in a Single-Stage Low-Speed Axial Compressor." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38090.

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Recent research efforts have focused on the aerodynamic mechanism, identifications, and advanced capturing methods of stall inception. Making use of active control and intelligent casing treatment, all the efforts aim at expanding operational ranges of compressors and at improving their operational stability. It is widely known that the dynamic behavior of stall inception is strongly influenced by occurrence of inlet distortion, radial loading distribution, tip-clearance flow, stage matching, and downstream oscillation from combustion chambers. Therefore, experimental research is imperative to

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San Andre´s, Luis, and Keun Ryu. "On the Nonlinear Dynamics of Rotor-Foil Bearing Systems: Effects of Shaft Acceleration, Mass Imbalance and Bearing Mechanical Energy Dissipation." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45763.

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Gas foil bearing (GFB) technology has reached great maturity as per engineered design and construction and its system integration into rotating machinery. Empirical research has gone beyond showing a few instances of acceptable mechanical performance, to demonstrate GFB multiple-cycle repeatable performance in spite of persistent large amplitude sub synchronous whirl motions. A GFB is a forgiving mechanical element whose engineered resilient underspring structure contains and ameliorates large rotor excursions. Analyses, however, fail to distinguish the hardening stiffness from the FB underspr

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Untaroiu, Alexandrina, Patrick Migliorini, Houston G. Wood, Paul E. Allaire, and John A. Kocur. "Hole-Pattern Seals: A Three Dimensional CFD Approach for Computing Rotordynamic Coefficient and Leakage Characteristics." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11558.

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Labyrinth and other annular seals are commonly used in the turbomachinery industry to limit the leakage between different pressure regions. The pressure driven flow these seals experience can produce significant forces on the rotor. These fluid-induced excitation forces can exert a strong influence on the dynamic characteristics of the machine. Such seal forces can cause the rotor to become unstable, or when properly designed, stabilize a troublesome machine. Thus, it is important to accurately quantify the fluid-induced forces exerted on the rotor to effectively predict the dynamic behavior.

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Schiffmann, J., and Z. S. Spakovszky. "Foil Bearing Design Guidelines for Improved Stability." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70899.

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Experimental evidence in the literature suggests that foil bearing supported rotors can suffer from sub-synchronous vibration. While dry-friction between top foil and bump foil is thought to provide structural damping, sub-synchronous vibration is still an unresolved issue and has been recently attributed to the non-linearity of the bump-foil support stiffness. A non-linear rotordynamic model corroborates this hypothesis, however a forcing is required to excite the system. The current paper aims to shed new light onto this matter and discusses the impact of various design variables on stable f

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Abdul Nasar, Rafath, and Mohammad A. Al-Shudeifat. "Employing Machine Learning to Detect Post Resonance Backward Whirl in a Faulty Rotor System." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-116335.

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Abstract Machine Learning (ML) algorithms have several applications in various fields of science. One of the major applications of ML is to recognize patterns in input signals and classify the input accordingly to various classes. Employing ML with structural health monitoring tools to identify faults has become an emerging area in research. Faults in rotor systems generally cause asymmetries in the rotor shaft stiffness which further results in generating higher harmonic components. One of the recent tools that has been prevalently used to identify faults is the post-resonance backward whirl

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Sudarev, A. V. "Low-Toxic Method of Fuel Firing in Gas Turbine Micro-Flame Combustors." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-101.

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The results of development and study of the microflame diffusive firing of fuels outside the flameholder system with alternating whirl swirlers, located between them, are shown. The principles of a rational organization of the nearby trace structure outside the bluff-bodies within a limited turbulent flow are stated. The dome geometric parameters effect on the firing stability, heat emission completeness, temperature and concentration patterns of the flame, complex heat exchange process, toxic component emission and other characteristics of combustion chamber are discussed.

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Watson, William, Fred Dupriest, Ysabel Witt-Doerring, et al. "IADC Code Upgrade: Bit and BHA Forensics Using Rig-Based Photographic Documentation Practices." In IADC/SPE International Drilling Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/208707-ms.

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Abstract This paper establishes uniform recommended industry practices for bit and bottom hole assembly (BHA) photo documentation. In addition to standardizing photo documentation this reference document contains a discussion and example photos which may be used as training material to aid the rig site team in determining the cause of the damage observed in the photos. Effective field photo documentation and training to identify the causes enables the team to modify parameters used in real time or make other immediate changes in the BHA or drilling system with a higher degree of confidence the

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Reports on the topic "Whorl pattern"

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Perl-Treves, Rafael, Rebecca Grumet, Nurit Katzir, and Jack E. Staub. Ethylene Mediated Regulation of Sex Expression in Cucumis. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7586536.bard.

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Monoecious species such as melon and cucumber develop separate male and female (or bisexual) flowers on the same plant individual. They display complex genetic and hormonal regulation of sex patterns along the plant. Ethylene is known to play an important role in promoting femaleness and inhibiting male development, but many questions regarding critical sites of ethylene production versus perception, the relationship between ethylene and the sex determining loci, and the possible differences between melon and cucumber in this respect are still open. The general goal of the project was to eluci

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