Letteratura scientifica selezionata sul tema "Orthokinesis"

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Articoli di riviste sul tema "Orthokinesis"

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Journal, Baghdad Science. "The Kinetic responses and foraging behavior of Drosophila melanogaster larvae." Baghdad Science Journal 4, no. 3 (September 2, 2007): 458–67. http://dx.doi.org/10.21123/bsj.4.3.458-467.

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Abstract (sommario):
Adaptive responses in larval behavior may be of two kinds: Taxis: This involves a change in direction relative to source of a stimulus. Kinesis: Kinesis has no directional component, but involves change in the rate of performance in response to a stimulus. Drosophila larvae exhibited flexible behavioral responses associated with food acquisition and selection for different environmental conditions. In this investigation, we are concerned explosively with kinetic responses to food viability. Third instar larvae were subjected to test for thirty minutes in each of the following conditions i) in
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Takle, G. B., and A. M. Lackie. "Chemokinetic behaviour of insect haemocytes in vitro." Journal of Cell Science 85, no. 1 (September 1, 1986): 85–94. http://dx.doi.org/10.1242/jcs.85.1.85.

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Abstract (sommario):
Time-lapse microphotography was used to film the locomotory behaviour of cockroach haemocytes in vitro, and the cell tracks were analysed for speed and persistence; the percentage mobilization and the diffusion rate of the population were calculated. Haemocytes are either fast locomotor or spread moving cells, or non-motile spread or rounded cells; the first three types are plasmatocytes and their behaviour is interchangeable. Approximately 20% of the cells are motile under control conditions and there is no correlation between orthokinesis and klinokinesis. If activated haemocyte lysate super
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Vicker, M. G. "The regulation of chemotaxis and chemokinesis in Dictyostelium amoebae by temporal signals and spatial gradients of cyclic AMP." Journal of Cell Science 107, no. 2 (February 1, 1994): 659–67. http://dx.doi.org/10.1242/jcs.107.2.659.

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Abstract (sommario):
The tactic and kinetic locomotion of Dictyostelium discoideum amoebae were examined in cyclic AMP (cAMP) spatial gradient and temporal signal fields. The distributions of migrating cells were examined within 150 microns-thick micropore filters after incubation with different cAMP concentrations, [cAMP], applied in three ways across the fields: as positively or negatively developing gradients, generated either by increasing or decreasing the [cAMP] on one side of the filter, respectively, or as static, linear gradients after negative development. Chemotaxis was only induced by oriented, tempora
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NEEMAN, RENATE L. "ORTHOKINETIC SENSORIMOTOR TREATMENT." Australian Occupational Therapy Journal 20, no. 3 (August 27, 2010): 122–25. http://dx.doi.org/10.1111/j.1440-1630.1973.tb00643.x.

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Mumtaz, H. S., M. J. Hounslow, N. A. Seaton, and W. R. Paterson. "Orthokinetic Aggregation During Precipitation." Chemical Engineering Research and Design 75, no. 2 (February 1997): 152–59. http://dx.doi.org/10.1205/026387697523615.

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Song, L., G. H. Koopmann, and T. L. Hoffmann. "An Improved Theoretical Model of Acoustic Agglomeration." Journal of Vibration and Acoustics 116, no. 2 (April 1, 1994): 208–14. http://dx.doi.org/10.1115/1.2930414.

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Abstract (sommario):
An improved theoretical model is developed to describe the acoustic agglomeration of particles entrained in a gas medium. The improvements to the present theories are twofold: first, wave scattering is included in the orthokinetic interaction of particles and second, hydrodynamic interaction, shown to be an important agglomeration mechanism for certain operation conditions, is incorporated into the model. The influence of orthokinetic and hydrodynamic interactions introduce associated convergent velocities that cause particles to approach each other and collide. The convergent velocities are r
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Hermans, J. J. "Orthokinetic coagulation due to oscillations." Recueil des Travaux Chimiques des Pays-Bas 58, no. 2 (September 3, 2010): 164–73. http://dx.doi.org/10.1002/recl.19390580208.

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Graham, N. J. D. "Orthokinetic flocculation in rapid filtration." Water Research 20, no. 6 (June 1986): 715–24. http://dx.doi.org/10.1016/0043-1354(86)90095-3.

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Ibuki, Aileen, Timothy Bach, Douglas Rogers, and Julie Bernhardt. "The Effect of Tone-Reducing Orthotic Devices on Soleus Muscle Reflex Excitability while Standing in Patients with Spasticity Following Stroke." Prosthetics and Orthotics International 34, no. 1 (March 2010): 46–57. http://dx.doi.org/10.3109/03093640903476802.

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Abstract (sommario):
Orthoses are commonly prescribed for the management of spasticity but their neurophysiologic effect on spasticity remains unsubstantiated. The purpose of this study was to investigate the effect of three tone-reducing devices (dynamic foot orthosis, muscle stretch, and orthokinetic compression garment) on soleus muscle reflex excitability while standing in patients with spasticity following stroke. A repeated-measures intervention study was conducted on 13 patients with stroke selected from a sample of convenience. A custom-made dynamic foot orthosis, a range of motion walker to stretch the so
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Ward, Mandy J., Kenny C. Mok, and David R. Zusman. "Myxococcus xanthus Displays Frz-Dependent Chemokinetic Behavior during Vegetative Swarming." Journal of Bacteriology 180, no. 2 (January 15, 1998): 440–43. http://dx.doi.org/10.1128/jb.180.2.440-443.1998.

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Abstract (sommario):
ABSTRACT Myxococcus xanthus has been shown to utilize both directed (tactic) and undirected (kinetic) movements during different stages of its complex life cycle. We have used time-lapse video microscopic analysis to separate tactic and kinetic behaviors associated specifically with vegetatively swarming cells. Isolated individual cells separated by a thin agar barrier from mature swarms showed significant increases in gliding velocity compared to that of similar cells some distance from the swarm. This orthokinetic behavior was independent of the frequency of reversals of gliding direction (k
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Più fonti

Tesi sul tema "Orthokinesis"

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Merfield, Charles Norman. "Predator interactions within a trophic level : Phalangium opilio L. (Arachnida: Opiliones) and mites (Arachnida: Acari)." Master's thesis, Lincoln University. Bio-Protection and Ecology Division, 2000. http://theses.lincoln.ac.nz/public/adt-NZLIU20060908.204153.

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Abstract (sommario):
This study investigated commensal feeding interactions between the European harvestman (P. opilio L.) and the predatory mites Balaustium spp. and Anystis baccarum L. It also investigated the feeding behaviour of P. opilio. Experiments were conducted in the laboratory using standardised temperature, humidity, photoperiod and experimental arenas, with eggs of the brown blowfly (Calliphora stygia F.) as prey facsimiles. Due to initial difficulties in obtaining enough predatory mites, mite feeding was manually simulated piercing blowfly eggs with a minuten pin. P. opilio consumed significantl
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Merfield, C. N. "Predator interactions within a trophic level : Phalangium opilio L. (Arachnida: Opiliones) and mites (Arachnida: Acari)." Diss., Lincoln University, 2000. http://hdl.handle.net/10182/21.

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Abstract (sommario):
This study investigated commensal feeding interactions between the European harvestman (P. opilio L.) and the predatory mites Balaustium spp. and Anystis baccarum L. It also investigated the feeding behaviour of P. opilio. Experiments were conducted in the laboratory using standardised temperature, humidity, photoperiod and experimental arenas, with eggs of the brown blowfly (Calliphora stygia F.) as prey facsimiles. Due to initial difficulties in obtaining enough predatory mites, mite feeding was manually simulated piercing blowfly eggs with a minuten pin. P. opilio consumed significantly mor
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3

Brunet, Edouard. "Etudes de systèmes microfluidiques : agrégation de particules, électrocinétique linéaire, analyse de protéines." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00007776.

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Abstract (sommario):
Après deux chapitres introductifs, ce manuscrit est divisé en trois parties independantes. (I) Nous étudions l'influence du cisaillement sur l'agrégation de particules paramagnétiques soumises à un champ magnétique parallèle à l'écoulement. Nous montrons que les chaines formées croissent linéairement suivant un modèle utilisant l'équation de Smoluchovsky. (II) Une étude théorique est menée afin d'étendre aux situations expérimentales rencontrées en microfluidique les relations décrivant les phénomènes électrocinétiques. Les symétries entre courant d'écoulement et électroosmose sont démontrées.
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Capitoli di libri sul tema "Orthokinesis"

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Coupland, John, and Siva Vanapalli. "Orthokinetic Stability of Food Emulsions." In Food Emulsions. CRC Press, 2003. http://dx.doi.org/10.1201/9780203913222.ch9.

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Ives, K. J. "Coagulation and Flocculation Part II–Orthokinetic Flocculation." In Solid–Liquid Separation, 98–131. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-408-03765-5.50009-9.

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Hollander, E. D., J. J. Derksen, O. S. L. Bruinsma, G. M. van Rosmalen, and H. E. A. van den Akker. "A Numerical Investigation into the Influence of Mixing on Orthokinetic Agglomeration." In 10th European Conference on Mixing, 221–29. Elsevier, 2000. http://dx.doi.org/10.1016/b978-044450476-0/50029-7.

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Atti di convegni sul tema "Orthokinesis"

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Berk, H. R. "THE EFFECT OF SHEAR ON OLIGOMER FORMATION; EFFECTIVE REMOVAL OF MONOMERS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644220.

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Abstract (sommario):
Fibrin polymerization has been found to be influenced by shear flow conditions (Puryear,1980). In order to determine which mechanisms are responsible for theeffect reported it is necessary to look at the various stages in fibrin polymerization. It is known that the enzymatic attack of thrombin on fibrinogen is not influenced by shear (Sellers,1981). The next step, which is investigated in this study, is the oligomer-early protofibril stage.Fibrinogen (human, Kabi) is reacted with thrombin (human, Sigma) under Couette flow conditions (volume-averaged shear 0-250sec-l) in a pH 6.8, 4mM CaC12, HE
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Yamaguchi, Eiichiro, and Ronald J. Adrian. "Theoretical and Experimental Study of Microchannel Blockage Phenomena." In ASME 2003 1st International Conference on Microchannels and Minichannels. ASMEDC, 2003. http://dx.doi.org/10.1115/icmm2003-1113.

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Abstract (sommario):
Microchannel blockage phenomena by hard, spherical particles have been investigated experimentally and theoretically. The study was performed over a range of particle-to-channel diameter ratios of 0.14 < R < 0.65. Two mechanisms have been investigated: orthokinetic flocculation and hydrokinetic arching. Arching appears to be the main mechanism for large, hard particles. In the absence of Brownian motion and inter-particle repulsive forces, other than simple Hertzian contact force, the blockage phenomenon is described by three non-dimensional parameters, N, R and β. The mean total number
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