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Journal articles on the topic 'Brister'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Holst, Signe. "Når kjærligheten brister. Mekling i familievernet." Fokus på familien 36, no. 04 (2008): 305–16. http://dx.doi.org/10.18261/issn0807-7487-2008-04-07.

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Brister, M. M., M. Pollum, and C. E. Crespo-Hernández. "Correction: Photochemical etiology of promising ancestors of the RNA nucleobases." Physical Chemistry Chemical Physics 18, no. 32 (2016): 22731. http://dx.doi.org/10.1039/c6cp90188c.

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3

Samuelsson, Marcus, Gunnel Colnerud, Eva Ragnemalm, Mattias Arvola, and Mathias Nordvall. "Simuleringar tränar förmågan att leda klassrummet." Venue 5, no. 1 (2016): 1–6. http://dx.doi.org/10.3384/venue.2001-788x.1651.

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Många lärarstudenter lämnar lärarutbildningen med brister i förmågan att leda klassrummet – enligt dem själva. Genom datorsimuleringar har lärarstudenter fått ett nytt och effektivt sätt att träna upp sin förmåga att leda klassrummet utan att verkliga elever kommer till skada. Det visar ett forskningsprojekt 1 vid Linköpings universitet.

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Rudberg, Pontus. "”Den som pekar på andras brister visar därigenom sina egna.”." Nordisk judaistik/Scandinavian Jewish Studies 31, no. 1 (2020): 100–102. http://dx.doi.org/10.30752/nj.91374.

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Thor Tureby, Malin. ""Den som pekar på andras brister visar därigenom sina egna"." Nordisk judaistik/Scandinavian Jewish Studies 31, no. 2 (2020): 92–97. http://dx.doi.org/10.30752/nj.98544.

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Thoma, Eileen. "SPIRITUAL WISDOM FOR SUCCESSFUL RETIREMENT By C. W. Brister, PhD." Educational Gerontology 34, no. 9 (2008): 846. http://dx.doi.org/10.1080/03601270802296026.

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Rudberg, Pontus. "”Den som pekar på andras brister visar därigenom sina egna”." Nordisk judaistik/Scandinavian Jewish Studies 32, no. 1 (2021): 117–18. http://dx.doi.org/10.30752/nj.107434.

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8

Åberg, Åke. "Böcker på Gotland under 1600-talet." Bibliotekshistorie 2, no. 1 (1988): 5–43. http://dx.doi.org/10.7146/bh.v2i1.35874.

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Det finns olika sätt att fa kunskap om forna tiders bokliga kultur, om bokägande och läsning. De har alla sina brister och måste därför supplera varandra. Bouppteckningar och än mer bokauktionskataloger är sällsynta under den tid vi här sysslar med, och deras bestånd av titlar är inte representativt. De överbetonar skrifter som har ekonomiskt värde och ger prestige, som visar fromhet och lärdom, och utelämner den billiga och efemära underhållningslitteraturen, som vi vet varit vanlig och säkert i hög grad bidragit till att forma människors åsikter och värderingar.

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Haglund, Björn. "”Men dom flesta har en liknande situation.”." BARN - Forskning om barn og barndom i Norden 36, no. 2 (2018): 75–92. http://dx.doi.org/10.5324/barn.v36i2.2766.

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Artikeln har en narrativ form och baseras på empiri från en etnografiinspirerad studie på ett svenskt fritidshem och fokuserar på hur Ann, den lärare som ansvarar för fritidshemmets verksamhet, försöker att bygga upp och driva verksamheten. Hon, liksom de statliga styrdokument hon försöker att utgå ifrån, har höga ambitioner med verksamheten men de förutsättningar skolan erbjuder för att bedriva kvalitativt hög verksamhet är bristfälliga. Hög personalomsättning i kombination med personal utan utbildning och brister i planeringstiden blir hinder både för Anns ambitionsnivå och fritidshemmets mö

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Parkatti, Jarre. "Åter till Ålborg." Yhdyskuntasuunnittelu 59, no. 1 (2021): 33–55. http://dx.doi.org/10.33357/ys.100156.

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Flyvbjergs Ålborg-studie har bidragit till förskjutningen från kommunikativ planeringsteori mot poststrukturalism. Den har ändå teoretiska brister som bara delvis utretts. Hans inkoherenta bruk av Foucault och förenklade syn på natur- kontra samhällsvetenskap påverkar alltjämt forskningen. I stället för att söka korrigera defekten avser jag, utan att ogiltigförklara studiens empiriska innehåll, skapa koherens genom att ersätta dess teoretiska grundval med en struktureringsteoretisk, vilket jag även finner teoretiskt fruktbart. I motsats till ett konsekvent foucaultskt perspektiv kan tillgången

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11

Way, Jon. ""In The Presence of Buffalo: Working to Stop the Yellowstone Slaughter" by Daniel Brister. 2013. [book review]." Canadian Field-Naturalist 127, no. 4 (2013): 366. http://dx.doi.org/10.22621/cfn.v127i4.1498.

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Ludvigsson, Ann, and Carin Falkner. "Fritidshem – ett gränsland i utbildningslandskapet." Nordisk tidsskrift for pedagogikk og kritikk 5 (2019): 13. http://dx.doi.org/10.23865/ntpk.v5.1181.

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Fritidshemmet utgör en väsentlig del av grundskolan och är positionerat som ett gränsland i det svenska utbildningslandskapet, mellan förskola, förskoleklass och grundskola. Mot bakgrund av fritidshemmets positionering som gränsland och de stora strukturella förändringar som genomförts under senare årtionden är syftet med artikeln att diskutera hur lärare i fritidshem konstruerar en gemensam förståelse av sitt uppdrag – en institutionell identitet – utifrån fritidshemmets position i utbildningslandskapet. Artikeln bygger på en studie med två fokusgruppssamtal med sammanlagt åtta lärare. För at

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13

Wako, Kei, Kunio Kimura, Yu Yamamoto, et al. "Digital topography with an X-ray CCD camera for characterizing perfection in protein crystals." Journal of Applied Crystallography 45, no. 5 (2012): 1009–14. http://dx.doi.org/10.1107/s0021889812032049.

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Digital X-ray topography using an X-ray CCD camera and conventional X-ray topography using X-ray film were used to investigate tetragonal hen egg-white lysozyme (HEWL) crystals. Previously, clear dislocation images of protein crystals were mainly obtained by film methods. Earlier studies of HEWL crystals using an X-ray CCD camera mainly revealed domain structures. In the present study, dislocation images of the same HEWL crystal have been obtained by using conventional X-ray film and a digital X-ray CCD camera. The results demonstrate that digital topography using an X-ray CCD camera is an eff

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Backlund, Åsa, Katarina Thorén, and Tommy Lundström. "Socialtjänstens respons på "flyktingkrisen"." Socialvetenskaplig tidskrift 28, no. 1 (2021): 75–94. http://dx.doi.org/10.3384/svt.2021.28.1.4075.

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Syftet med artikeln är att analysera organisering av och synen på mottagandet av ensamkommande barn inom socialtjänsten våren 2016 – en tidpunkt då antalet asylsökande ensamkommande barn nyligen nått en extrem omfattning under kort tid. Artikeln baseras på en totalundersökning (enkät) av socialtjänstens resurser, organisering och insatser i arbetet med ensamkommande barn och ungdomar. Resultatet visar att trots en statlig ambition om normalisering och integrering av mottagandet i den sociala barnavården, har en tydlig respons från socialtjänsten varit att specialisera verksamheten utifrån den

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Lynch, Thomas B., and Robert F. Wittwer. "n-Tree distance sampling for per-tree estimates with application to unequal-sized cluster sampling of increment core data." Canadian Journal of Forest Research 33, no. 7 (2003): 1189–95. http://dx.doi.org/10.1139/x03-036.

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Samples from the n trees nearest to a point or plot center are sometimes used to estimate per-tree values such as age or growth from increment cores. Clutter et al. (J.L. Clutter, J.C. Fortson, L.V. Pienaar, G.H. Brister, and R.L. Bailey. 1983. Timber management: a quantitative approach. John Wiley & Sons, New York) indicated that this procedure can be biased because it is more likely to sample large trees occupying large amounts of space. This sampling procedure falls into the category of n-tree distance sampling in which the nth closest tree to a point defines a plot radius that can be u

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16

Melnick, Marsha. "Mosby s Comprehensive Physical Therapist Assistant Board Review. Brister SJ. St. Louis, MO, CV Mosby Co, 1996, paperback, 290 pp, illus, two practice exams." Journal of Physical Therapy Education 11, no. 2 (1997): 46–47. http://dx.doi.org/10.1097/00001416-199707000-00011.

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17

Tilney, Lewis G., Patricia S. Connelly, Linda Ruggiero, Kelly A. Vranich, Gregory M. Guild, and David DeRosier. "The Role Actin Filaments Play in Providing the Characteristic Curved Form of Drosophila Bristles." Molecular Biology of the Cell 15, no. 12 (2004): 5481–91. http://dx.doi.org/10.1091/mbc.e04-06-0472.

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Drosophila bristles display a precise orientation and curvature. An asymmetric extension of the socket cell overlies the newly emerging bristle rudiment to provide direction for bristle elongation, a process thought to be orchestrated by the nerve dendrite lying between these cells. Scanning electron microscopic analysis of individual bristles showed that curvature is planar and far greater near the bristle base. Correlated with this, as development proceeds the pupa gradually recedes from the inner pupal case (an extracellular layer that encloses the pupa) leading to less bristle curvature al

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Tilney, L. G., P. S. Connelly, K. A. Vranich, M. K. Shaw, and G. M. Guild. "Actin filaments and microtubules play different roles during bristle elongation in Drosophila." Journal of Cell Science 113, no. 7 (2000): 1255–65. http://dx.doi.org/10.1242/jcs.113.7.1255.

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Developing bristles in Drosophila pupae contain 7–11 bundles of crosslinked actin filaments and a large population of microtubules. During bristle growth the rate of cell elongation increases with bristle length. Thin section EM shows that bundle size is correlated with the amount of cytoplasm at all points along the bristle. Thus, as the bristle elongates and tapers, fewer actin filaments are used. To ensure penetration of inhibitors we isolated thoraces and cultured them in vitro; bristles elongate at rates identical to bristles growing in situ. Interestingly, inhibitors of actin filament as

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19

Sullivan, Robert M. "Phylogenetic relationships among subclades within the Trinity bristle snail species complex, riverine barriers, and re-classification." California Fish and Wildlife Journal, CESA Special Issue (July 6, 2021): 107–45. http://dx.doi.org/10.51492/cfwj.cesasi.6.

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The Trinity bristle snail (Monadenia setosa) is listed as a threatened species under the California Endangered Species Act (CESA). In northern California, populations of this endemic terrestrial gastropod occur in rare, isolated, and highly fragmented locations within the greater Trinity Basin. Since 1952 when it was originally described, the taxonomic status of the Trinity bristle snail has been questioned based on unpublished information limited in geographic scope and sample size, which resulted in the taxon being reduced from species status (M. setosa) to subspecific status (M. i. setosa)

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20

Ripoll, P., M. El Messal, E. Laran, and P. Simpson. "A gradient of affinities for sensory bristles across the wing blade of Drosophila melanogaster." Development 103, no. 4 (1988): 757–67. http://dx.doi.org/10.1242/dev.103.4.757.

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The wing blade of Drosophila melanogaster is composed of dorsal and ventral surfaces covered with hairs and rows of morphologically distinct bristles round the margin. The mutant shaggy causes a complete transformation of hairs into bristles over the entire wing surfaces. Clones of mutant bristles have a tendency to line up into straight bristle rows. Clones are straight and orderly near the wing margin but form bundles and vesicles when a long distance from the margin. Furthermore the bristle cells move distally along the future wing blade in the general direction of the margin. From these st

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Turner, M. T., J. W. Chew, and C. A. Long. "Experimental Investigation and Mathematical Modeling of Clearance Brush Seals." Journal of Engineering for Gas Turbines and Power 120, no. 3 (1998): 573–79. http://dx.doi.org/10.1115/1.2818185.

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In this paper, an experimental program and a CFD based mathematical model using a brush seal at two bristle to rotor clearances (0.27 mm and 0.75 mm) are presented. The experimental program examined the radial pressure distributions along the backing ring, the axial pressure distribution along the rotor, and the mass flow through the seal through a range of pressure ratios while exhausting to atmosphere. The results from this experimental program have been used to further calibrate a CFD-based model. This model treats the bristle pack as an axisymmetric, anisotropic porous region, and is calib

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Jalaluddin, Md, Sandhya P. Naik, Sameer Punathil, Praveena Shetty, Ipsita Jayanti, and Anisha Avijeeta. "Effectiveness of Different Bristle Designs of Toothbrushes and Periodontal Status among Fixed Orthodontic Patients: A Double-blind Crossover Design." Journal of Contemporary Dental Practice 19, no. 2 (2018): 150–55. http://dx.doi.org/10.5005/jp-journals-10024-2229.

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ABSTRACT Aim The aim of the present study was to evaluate the effectiveness of different bristle designs of toothbrushes and the periodontal status among patients undergoing fixed orthodontic treatment. Materials and methods This randomized controlled trial (RCT) consisted of 45 adolescents (comprising 20 males and 25 females) undergoing fixed orthodontic treatment. The study participants were randomly allocated to three groups, each group being assigned a locally available toothbrush with a particular design of toothbrush bristle. In the first test phase, group I study participants were alloc

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23

Nilsson, Roddy. "»The walls ought to be demolished from the inside«: KRUM and the failure of the prison struggle in Sweden in the 1960s and 70s." Nordisk Tidsskrift for Kriminalvidenskab 106, no. 1 (2019): 37–53. http://dx.doi.org/10.7146/ntfk.v106i1.124725.

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Abstract SwedishArtikeln behandlar fångkampen i de svenska fängelserna vid 1960-talets slut och 1970-talets början. Framför allt diskuteras den roll Riksförbundet för Kriminalvårdens humanisering (KRUM) spelade. Delvis i motsättning till den tidigare forskningens uppfattningen att fångarnas relativa nederlag kan förklaras av en kombination av en svag förhandlingsposition, otillräcklig förhandlingskompetens, motpartens överlägsna resurser och taktiska skicklighet och vikande stöd från media, argumenterar artikeln för att nederlaget också måste förstås i relation till brister i fångarnas strateg

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Shrimpton, A. E., and A. Robertson. "The isolation of polygenic factors controlling bristle score in Drosophila melanogaster. I. Allocation of third chromosome sternopleural bristle effects to chromosome sections." Genetics 118, no. 3 (1988): 437–43. http://dx.doi.org/10.1093/genetics/118.3.437.

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Abstract A single third chromosome C, with a high sternopleural bristle score, had been extracted from an artificial selection line. C was divided into five chromosomal sections by recombination with a multiply marked third chromosome ruseca, which had a low sternopleural bristle score. A nonuniform distribution of sternopleural bristle effect with physical length of chromosome was observed. The second section (26-44 cM) of C carried the most sternopleural bristle effect (10 bristles when homozygous), the first (0-26 cM) and third (44-62 cM) also carried significant sternopleural bristle effec

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Chen, L. H., P. E. Wood, T. V. Jones, and J. W. Chew. "An Iterative CFD and Mechanical Brush Seal Model and Comparison With Experimental Results." Journal of Engineering for Gas Turbines and Power 121, no. 4 (1999): 656–62. http://dx.doi.org/10.1115/1.2818522.

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The position of the bristles within a brush seal is dictated by the pressure distribution within the seal, which is itself influenced by the position of the bristle matrix. In order to predict mass flows, pressure capabilities, bristle displacements, stresses, and contact loads at the rotor interface, a technique for iterating between a CFD and a mechanical model has been developed. The iterative technique is used to model the behavior of seals with an initial build clearance, where the application of pressure causes a change in the position of the bristle matrix. Frictional effects between ne

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Mortensen, Melissa, Ghassan Samara, and Elliot Regenbogen. "Grill-Cleaning Wire Brush Bristle Ingestion: Case Series and Review of the Literature." Annals of Otology, Rhinology & Laryngology 127, no. 10 (2018): 698–702. http://dx.doi.org/10.1177/0003489418789178.

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Objectives: The authors report a small case series of an unusual ingested foreign body, wire brush bristles, whose small size can present a challenge for endoscopic removal. The authors describe transnasal endoscopic removal and provide a literature review. Methods: From 2011 to 2017, 8 patients presented to an academic tertiary medical center with ingestion of wire brush bristles. The patients’ medical records were reviewed and are described in this report, along with a literature review. Results: In 4 patients, the bristles were in the lingual tonsils. In 1 patient, a bristle was within the

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Lelli, Diego, John W. Chew, and Paul Cooper. "Combined Three-Dimensional Fluid Dynamics and Mechanical Modeling of Brush Seals." Journal of Turbomachinery 128, no. 1 (2005): 188–95. http://dx.doi.org/10.1115/1.2103093.

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Development and application of a combined 3D computational fluid dynamics (CFD) and 3D bristle bending model for brush seals is described. The CFD model is created using commercial CFD mesh generation and solver software. A small gap is assumed between all bristles in the CFD model so as to avoid meshing problems at contact points and allow for imperfections in bristle geometry. The mechanical model is based on linear beam bending theory and allows large numbers of bristles to be modelled with arbitrary bristle-to-bristle contact and imported from the CFD solution. Deformed geometries may be e

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Sunada, S., H. Takashima, T. Hattori, K. Yasuda, and K. Kawachi. "Fluid-dynamic characteristics of a bristled wing." Journal of Experimental Biology 205, no. 17 (2002): 2737–44. http://dx.doi.org/10.1242/jeb.205.17.2737.

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SUMMARYThrips fly at a chord-based Reynolds number of approximately 10 using bristled rather than solid wings. We tested two dynamically scaled mechanical models of a thrips forewing. In the bristled design, cylindrical rods model the bristles of the forewing; the solid design was identical to the bristled one in shape, but the spaces between the `bristles' were filled in by membrane. We studied four different motion patterns: (i) forward motion at a constant forward velocity, (ii) forward motion at a translational acceleration, (iii) rotational motion at a constant angular velocity and (iv)ro

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Barish, Leo. "A comparison of hog and synthetic bristles." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 804–5. http://dx.doi.org/10.1017/s0424820100145364.

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It is generally accepted that hog bristles hold paint and resist dripping better than synthetics. It would appear that these properties may be related to the wettability of the bristle surfaces by paint. As an analog, experiments were performed in which advancing and receding contact angles of drops of mineral oil were measured against bristle surfaces. Surprisingly, it was found that hog bristles produced higher contact angles indicating that wetting was actually less than that of synthetics.Major differences in the texture of the surfaces between both types of bristles were found which proba

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Lai, Chaoqiang, and Trudy F. C. Mackay. "Mapping and characterization of P-element-induced mutations at quantitative trait loci in Drosophila melanogaster." Genetical Research 61, no. 3 (1993): 177–93. http://dx.doi.org/10.1017/s0016672300031359.

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SummaryX chromosomes derived from crosses of inbred P and M Drosophila melanogaster strains that had extreme effects on abdominal and/or sternopleural bristle number in males, were further analyzed to determine their effects in females and to map the loci at which the mutations occurred. Seven lines that had on average 3.9 fewer sternopleural bristles than wildtype in males had average homozygous sternopleural bristle effects of −2·2. The bristle effects were partially recessive, with an average degree of dominance of −0·60. Physical mapping of the sternopleural bristle effects of these lines

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Simpson, P., R. Woehl, and K. Usui. "The development and evolution of bristle patterns in Diptera." Development 126, no. 7 (1999): 1349–64. http://dx.doi.org/10.1242/dev.126.7.1349.

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The spatial distribution of sensory bristles on the notum of different species of Diptera is compared. Species displaying ancestral features have a simple organization of randomly distributed, but uniformly spaced, bristles, whereas species thought to be more derived bear patterns in which the bristles are aligned into longitudinal rows. The number of rows of large bristles on the scutum was probably restricted to four early on in the evolution of cyclorraphous Brachyceran flies. Most species have stereotyped patterns based on modifications of these four rows. The possible constraints placed u

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Mavros, G., H. Rahnejat, and P. D. King. "Transient Analysis of Tyre Friction Generation Using a Brush Model with Interconnected Viscoelastic Bristles." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 219, no. 3 (2005): 275–83. http://dx.doi.org/10.1243/146441905x9908.

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An analysis of the mechanism of tyre contact force generation under transient conditions is presented. For this purpose, two different versions of a brush model are used, both with inertial and viscoelastic properties. The first model consists of independent bristles, while the second, with a more realistic scenario, introduces viscoelastic circumferential connections between the sequential bristles, which affect the lateral degrees of freedom. Friction between the tyre and the ground follows an experimentally verified stick-slip law. For the model with independent bristles, the state of each

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Shrimpton, A. E., and A. Robertson. "The Isolation of Polygenic Factors Controlling Bristle Score in Drosophila Melanogaster. II. Distribution of Third Chromosome Bristle Effects within Chromosome Sections." Genetics 118, no. 3 (1988): 445–59. http://dx.doi.org/10.1093/genetics/118.3.445.

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Abstract In the present study an attempt has been made to characterize the genetic ;;factors'' controlling quantitative characters, bristle numbers, in Drosophila melanogaster. A low sternopleural bristle multiple recessive marker third chromosome was used to analyze a high sternopleural third chromosome, in a high sternopleural bristle background. An attempt was made to estimate the minimum number of ;;effective factors'' involved in the difference in bristle score between the tested and marker chromosomes. Apart from sternopleural, scutellar and ocellar bristles, a new character, subprimal b

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Mackay, Trudy F. C., and Richard F. Lyman. "Drosophila bristles and the nature of quantitative genetic variation." Philosophical Transactions of the Royal Society B: Biological Sciences 360, no. 1459 (2005): 1513–27. http://dx.doi.org/10.1098/rstb.2005.1672.

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Numbers of Drosophila sensory bristles present an ideal model system to elucidate the genetic basis of variation for quantitative traits. Here, we review recent evidence that the genetic architecture of variation for bristle numbers is surprisingly complex. A substantial fraction of the Drosophila genome affects bristle number, indicating pervasive pleiotropy of genes that affect quantitative traits. Further, a large number of loci, often with sex- and environment-specific effects that are also conditional on background genotype, affect natural variation in bristle number. Despite this complex

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Fry, J. D., K. A. deRonde, and T. F. Mackay. "Polygenic mutation in Drosophila melanogaster: genetic analysis of selection lines." Genetics 139, no. 3 (1995): 1293–307. http://dx.doi.org/10.1093/genetics/139.3.1293.

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Abstract We have conducted genetic analyses of 12 long-term selection lines of Drosophila melanogaster derived from a highly inbred base population, containing new mutations affecting abdominal and sternopleural bristle number. Biometric analysis of the number of effective factors differentiating the selected lines from the base inbred indicated that with the exception of the three lines selected for increased number of abdominal bristles, three or more mutations contributed to the responses of the selection lines. Analysis of the chromosomal distribution of effects revealed that mutations aff

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Mackay, T. F., J. D. Fry, R. F. Lyman, and S. V. Nuzhdin. "Polygenic mutation in Drosophila melanogaster: estimates from response to selection of inbred strains." Genetics 136, no. 3 (1994): 937–51. http://dx.doi.org/10.1093/genetics/136.3.937.

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Abstract Replicated divergent artificial selection for abdominal and sternopleural bristle number from a highly inbred strain of Drosophila melanogaster resulted in an average divergence after 125 generations of selection of 12.0 abdominal and 8.2 sternopleural bristles from the accumulation of new mutations affecting bristle number. Responses to selection were highly asymmetrical, with greater responses for low abdominal and high sternopleural bristle numbers. Estimates of VM, the mutational variance arising per generation, based on the infinitesimal model and averaged over the responses to t

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Huda, Listiani Nurul, and Indra Nasution. "THE EFFECT OF IMPROVEMENT ON WORK FACILITY OF COCO BRISTLE PROCESS TO OCCUPATIONAL HEALTH AND SAFETY." ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat 3, no. 2 (2019): 393–400. http://dx.doi.org/10.32734/abdimastalenta.v3i2.4162.

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One of improvements on health and safety can be carried out by the improvement on work facilities used by workers during the production process. This research was conducted in one of manufacture of coco bristel which the machines are not designed ergonomically. Work posture of the worker are in standing position during the processing of coco bristle and the body position is bending that can causes fatigue at the back and spine. On the other hand, the coco bristle machine is not ergonomically designed to maintain security as workers shrink the outer shell of coir. Pulling velocity of coconut hu

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Kamiya, Takahiro. "Differences between the sensory organs of phytal and bottom-dwelling <i>Loxoconcha</i> (Ostracoda, Crustacea)." Journal of Micropalaeontology 8, no. 1 (1989): 37–47. http://dx.doi.org/10.1144/jm.8.1.37.

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Abstract. The morphology and distribution patterns of pores with a bristle were studied on two Loxoconcha species living in adjacent but different habitats: the phytal species L. japonica and the bottom-dwelling species L. uranouchiensis. Both species have only one kind of pore – sieve-pore – from which either of two kinds of bristles emerges. The two types of bristles are here called the “smooth”– and the “twisted”–type according to their morphological features. The sieve-pore orifice of the phytal Loxoconcha remains completely open, whereas that of the bottom-dwelling species has a special m

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Tilney, Lewis G., Patricia S. Connelly, Linda Ruggiero, Kelly A. Vranich, and Gregory M. Guild. "Actin Filament Turnover Regulated by Cross-linking Accounts for the Size, Shape, Location, and Number of Actin Bundles in Drosophila Bristles." Molecular Biology of the Cell 14, no. 10 (2003): 3953–66. http://dx.doi.org/10.1091/mbc.e03-03-0158.

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Drosophila bristle cells are shaped during growth by longitudinal bundles of cross-linked actin filaments attached to the plasma membrane. We used confocal and electron microscopy to examine actin bundle structure and found that during bristle elongation, snarls of uncross-linked actin filaments and small internal bundles also form in the shaft cytoplasm only to disappear within 4 min. Thus, formation and later removal of actin filaments are prominent features of growing bristles. These transient snarls and internal bundles can be stabilized by culturing elongating bristles with jasplakinolide

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Pistillo, Daniela, Nick Skaer, and Pat Simpson. "scuteexpression inCalliphora vicinareveals an ancestral pattern of longitudinal stripes on the thorax of higher Diptera." Development 129, no. 3 (2002): 563–72. http://dx.doi.org/10.1242/dev.129.3.563.

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In Drosophila the stereotyped arrangement of sensory bristles on the notum is determined by the tightly regulated control of transcription of the achaete-scute (ac-sc) genes which are expressed in small proneural clusters of cells at the sites of each future bristle. Expression relies on a series of discrete cis-regulatory elements present in the ac-sc gene complex that are the target of the transcriptional activators pannier (pnr) and the genes of the iroquois complex. Stereotyped bristle patterns are common among species of acalyptrate Schizophora such as Drosophila, and are thought to have

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Chen, L. H., P. E. Wood, T. V. Jones, and J. W. Chew. "Detailed Experimental Studies of Flow in Large Scale Brush Seal Model and a Comparison With CFD Predictions." Journal of Engineering for Gas Turbines and Power 122, no. 4 (2000): 672–79. http://dx.doi.org/10.1115/1.1287265.

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A five times scale model of an engine brush seal has been manufactured. The bristle stiffness and pressure were chosen to satisfy close similarity of the relevant non-dimensional parameters, and the choice of parameters is described. The comparison of flow characteristics for the model seal and an engine seal confirmed the non-dimensional similarity. Detailed pressure measurements were performed within the bristle pack by employing hollow bristles. This novel measurement allowed insight to be obtained into the operation of both clearance and interference seals. In particular, the measured pres

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Simpson, P., M. El Messal, J. Moscoso del Prado, and P. Ripoll. "Stripes of positional homologies across the wing blade of Drosophila melanogaster." Development 103, no. 2 (1988): 391–401. http://dx.doi.org/10.1242/dev.103.2.391.

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Clones of cells mutant for shaggy transform all hairs into bristles on the wing blade of Drosophila. Different types of bristles are formed at different locations. It is shown that, although shaggy cells are unable to make a correct decision between an epidermal cell pathway and that of a sensory bristle, they are nevertheless able to respond correctly to positional cues. A compilation of many clones led to the construction of a map of positional homologies in which all of the cells in any one area will produce the same kind of bristle. The result is a series of stripes oriented perpendicular

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Sharatchandra, M. C., and D. L. Rhode. "Computed Effects of Rotor-Induced Swirl on Brush Seal Performance—Part 2: Bristle Force Analysis." Journal of Tribology 118, no. 4 (1996): 920–26. http://dx.doi.org/10.1115/1.2831629.

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This paper analytically investigates the aerodynamic bristle force distributions in brush seals used in aircraft gas turbine engines. These forces are responsible for the onset of bristle tip lift-off from the rotor surface which significantly affects brush seal performance. In order to provide an enhanced understanding of the mechanisms governing the bristle force distributions, a full Navier-Stokes flow simulation is performed in a streamwise periodic module of bristles corresponding to the staggered square configuration. As is the case with a companion paper (Sharatchandra and Rhode, 1996),

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Morimitsu, T., H. Sakata, and T. Tsujimura. "Driving Mechanism for Vibrating Bristled Vehicle for Small Pipe." Journal of Engineering for Industry 110, no. 1 (1988): 86–91. http://dx.doi.org/10.1115/1.3187848.

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A novel vibrating bristled vehicle for small pipes is proposed. Its drive mechanism with rotating eccentric weight is simulated and analyzed. The investigation shows that the vibrating bristled vehicle can move smoothly through the pipe. The motion experiments and simulations are conducted using a vehicle with 16 bristles in order to clarify the relationship between the vehicle velocity and the angular velocity of the rotating eccentric weight. The calculated vehicle velocity agrees with the experiments.

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Zhao, H., and R. J. Stango. "Role of Distributed Interbristle Friction Force on Brush Seal Hysteresis." Journal of Tribology 129, no. 1 (2006): 199–204. http://dx.doi.org/10.1115/1.2401218.

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Brush seals comprised of closely packed fine-diameter wires are an important innovation in seal technology for turbo-machinery. During service, brush seal bristles are subjected to a complex system of forces that are associated with various working loads including—but not limited to—aerodynamic forces, bristle tip∕rotor contact force, and interbristle interactions. The latter interactions are associated with contact forces that are exerted onto a bristle by adjacent fibers, as both forces and displacements are transmitted throughout the fibrous network. Such interbristle contact forces can be

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Tilney, L. G., P. Connelly, S. Smith, and G. M. Guild. "F-actin bundles in Drosophila bristles are assembled from modules composed of short filaments." Journal of Cell Biology 135, no. 5 (1996): 1291–308. http://dx.doi.org/10.1083/jcb.135.5.1291.

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The actin bundles in Drosophila bristles run the length of the bristle cell and are accordingly 65 microns (microchaetes) or 400 microns (macrochaetes) in length, depending on the bristle type. Shortly after completion of bristle elongation in pupae, the actin bundles break down as the bristle surface becomes chitinized. The bundles break down in a bizarre way; it is as if each bundle is sawed transversely into pieces that average 3 microns in length. Disassembly of the actin filaments proceeds at the "sawed" surfaces. In all cases, the cuts in adjacent bundles appear in transverse register. F

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Parody, T. R., and M. A. Muskavitch. "The pleiotropic function of Delta during postembryonic development of Drosophila melanogaster." Genetics 135, no. 2 (1993): 527–39. http://dx.doi.org/10.1093/genetics/135.2.527.

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Abstract Analysis of the development of Delta (Dl) temperature-sensitive mutants pulsed at restrictive temperature during larval and pupal stages reveals multiple phenocritical periods during which reduction of Dl function affects viability and development of adult structures. Dl function is required during the third larval instar for post-pupal viability and during the first day of pupal development for viability through eclosion. Dl function is required biphasically for the development of sensory bristles. Earlier pulses lead to bristle multiplication and later pulses lead to bristle loss. T

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Sliter, T. J. "Imaginal disc-autonomous expression of a defect in sensory bristle patterning caused by the lethal(3)ecdysoneless1 (1(3)ecd1) mutation of Drosophila melanogaster." Development 106, no. 2 (1989): 347–54. http://dx.doi.org/10.1242/dev.106.2.347.

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The temperature-sensitive mutation 1(3)ecd1 of Drosophila melanogaster is known to autonomously impair the ability of the larval prothoracic gland to produce the steroid molting hormone ecdysone in response to stimulation by the tropic neuropeptide prothoracicotropic hormone. It is shown that autonomous expression of the 1(3)ecd1 mutation in metamorphosing imaginal tissues disrupts the spatial pattern of sensory bristles. Transfer of homozygous mutant animals to the restrictive temperature at the time of pupariation resulted in the elimination of sensory microchaetae and macrochaetae. This eff

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Guardino, Cesare, and John W. Chew. "Numerical Simulation of Three-Dimensional Bristle Bending in Brush Seals." Journal of Engineering for Gas Turbines and Power 127, no. 3 (2005): 583–91. http://dx.doi.org/10.1115/1.1850943.

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This paper presents a new method for predicting the three-dimensional (3D) bending behavior of bristles in brush seals. The model builds on and addresses shortcomings in an earlier two-dimensional bending model. The work was motivated by the need to develop a general 3D solid mechanical model that can ultimately be incorporated into CFD models of flow and heat transfer through brush seals. The iterative method considered here, which is based on linear beam-bending theory, allows relatively large numbers of bristles to be considered with arbitrary imposed aerodynamic forces. Bristle-to-bristle

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Ballini, Andrea, Michele Di Cosola, Rajiv Saini, et al. "A Comparison of Manual Nylon Bristle Toothbrushes versus Thermoplastic Elastomer Toothbrushes in Terms of Cleaning Efficacy and the Biological Potential Role on Gingival Health." Applied Sciences 11, no. 16 (2021): 7180. http://dx.doi.org/10.3390/app11167180.

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Background: It is well-known that toothbrushing might be associated with the development of oral soft tissue lesions. There is currently a continuing increase in the demand for new safety and performing materials in daily homecare oral hygiene including soft and extra-soft toothbrush bristles that tend to be safer. The aim of this study was to compare the efficacy of plaque control and the potential effects on gingival health of two different toothbrush bristle models. Methods: In a three-month period, a total of forty subjects were evaluated for Oral Hygiene Index (OHI), Gingival Index (GI) a

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