Coriolis Force: The apparent deflection (Coriolis acceleration) of a body in motion with respect to the earth, as seen by an observer on the earth, attributed to a fictitious force (Coriolis force) but actually caused by the rotation of the earth. In a medical context it refers to the physiological effects (nausea, vertigo, dizziness, etc.) felt by a person moving radially in a rotating system, as a rotating space station. (From Random House Unabridged Dictionary, 2d ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Gravity, Altered: A change in, or manipulation of, gravitational force. This may be a natural or artificial effect.Motion Sickness: Disorder caused by motion, as sea sickness, train sickness, car sickness, air sickness, or SPACE MOTION SICKNESS. It may include nausea, vomiting and dizziness.Gas, Natural: A combustible, gaseous mixture of low-molecular weight PARAFFIN hydrocarbons, generated below the surface of the earth. It contains mostly METHANE and ETHANE with small amounts of PROPANE; BUTANES; and higher hydrocarbons, and sometimes NITROGEN; CARBON DIOXIDE; HYDROGEN SULFIDE; and HELIUM. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Flowmeters: Devices used to measure the flow of fluids (see RHEOLOGY) or the AIR to measure RESPIRATION.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Rheology: The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.Wind: The motion of air relative to the earth's surface.FiresRenewable Energy: Forms of energy that are constantly and rapidly renewed by natural processes such as solar, ocean wave, and wind energy. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Planets: Celestial bodies orbiting around the sun or other stars.Earth (Planet): Planet that is the third in order from the sun. It is one of the four inner or terrestrial planets of the SOLAR SYSTEM.Evolution, Planetary: Creation and development of bodies within solar systems, includes study of early planetary geology.Exobiology: The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.Extraterrestrial Environment: The environment outside the earth or its atmosphere. The environment may refer to a closed cabin (such as a space shuttle or space station) or to space itself, the moon, or other planets.Astronomy: The science concerned with celestial bodies and the observation and interpretation of the radiation received in the vicinity of the earth from the component parts of the universe (McGraw Hill Dictionary of Scientific and Technical Terms, 5th ed)Stars, Celestial: Large bodies consisting of self-luminous gas held together by their own gravity. (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed)Weather: The state of the ATMOSPHERE over minutes to months.Climate: The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Seasons: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Temperature: The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.Rain: Water particles that fall from the ATMOSPHERE.Mineral Waters: Water naturally or artificially infused with mineral salts or gases.Counterfeit Drugs: Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.Fraud: Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.China: A country spanning from central Asia to the Pacific Ocean.CambodiaWater Supply: Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)Sulfotransferases: Enzymes which transfer sulfate groups to various acceptor molecules. They are involved in posttranslational sulfation of proteins and sulfate conjugation of exogenous chemicals and bile acids. EC 2.8.2.Polyvinyl Chloride: A polyvinyl resin used extensively in the manufacture of plastics, including medical devices, tubing, and other packaging. It is also used as a rubber substitute.Fingers: Four or five slender jointed digits in humans and primates, attached to each HAND.Zinc Fingers: Motifs in DNA- and RNA-binding proteins whose amino acids are folded into a single structural unit around a zinc atom. In the classic zinc finger, one zinc atom is bound to two cysteines and two histidines. In between the cysteines and histidines are 12 residues which form a DNA binding fingertip. By variations in the composition of the sequences in the fingertip and the number and spacing of tandem repeats of the motif, zinc fingers can form a large number of different sequence specific binding sites.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Micro-Electrical-Mechanical Systems: A class of devices combining electrical and mechanical components that have at least one of the dimensions in the micrometer range (between 1 micron and 1 millimeter). They include sensors, actuators, microducts, and micropumps.Microtechnology: Manufacturing technology for making microscopic devices in the micrometer range (typically 1-100 micrometers), such as integrated circuits or MEMS. The process usually involves replication and parallel fabrication of hundreds or millions of identical structures using various thin film deposition techniques and carried out in environmentally-controlled clean rooms.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Transducers: Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Hydrodynamics: The motion of fluids, especially noncompressible liquids, under the influence of internal and external forces.Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Water Quality: A rating of a body of water based on measurable physical, chemical, and biological characteristics.Rivers: Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean).Air Movements: The motion of air currents.Silicon Dioxide: Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.Glass: Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.Silica Gel: A non-crystalline form of silicon oxide that has absorptive properties. It is commonly used as a desiccating agent and as a stationary phase for CHROMATOGRAPHY. The fully hydrated form of silica gel has distinct properties and is referred to as SILICIC ACID.Technology: The application of scientific knowledge to practical purposes in any field. It includes methods, techniques, and instrumentation.Radiography, Dental, Digital: A rapid, low-dose, digital imaging system using a small intraoral sensor instead of radiographic film, an intensifying screen, and a charge-coupled device. It presents the possibility of reduced patient exposure and minimal distortion, although resolution and latitude are inferior to standard dental radiography. A receiver is placed in the mouth, routing signals to a computer which images the signals on a screen or in print. It includes digitizing from x-ray film or any other detector. (From MEDLINE abstracts; personal communication from Dr. Charles Berthold, NIDR)Autoanalysis: Method of analyzing chemicals using automation.Computer Storage Devices: Devices capable of receiving data, retaining data for an indefinite or finite period of time, and supplying data upon demand.Faculty, Medical: The teaching staff and members of the administrative staff having academic rank in a medical school.Memory: Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.Volatilization: A phase transition from liquid state to gas state, which is affected by Raoult's law. It can be accomplished by fractional distillation.Acid-Base Equilibrium: The balance between acids and bases in the BODY FLUIDS. The pH (HYDROGEN-ION CONCENTRATION) of the arterial BLOOD provides an index for the total body acid-base balance.Vomeronasal Organ: An accessory chemoreceptor organ that is separated from the main OLFACTORY MUCOSA. It is situated at the base of nasal septum close to the VOMER and NASAL BONES. It forwards chemical signals (such as PHEROMONES) to the CENTRAL NERVOUS SYSTEM, thus influencing reproductive and social behavior. In humans, most of its structures except the vomeronasal duct undergo regression after birth.Tsunamis: Series of ocean waves produced by geologic events or underwater LANDSLIDES. These waves can travel at speeds averaging 450 (and up to 600) miles per hour in the open ocean.

Reaching during virtual rotation: context specific compensations for expected coriolis forces. (1/13)

Subjects who are in an enclosed chamber rotating at constant velocity feel physically stationary but make errors when pointing to targets. Reaching paths and endpoints are deviated in the direction of the transient inertial Coriolis forces generated by their arm movements. By contrast, reaching movements made during natural, voluntary torso rotation seem to be accurate, and subjects are unaware of the Coriolis forces generated by their movements. This pattern suggests that the motor plan for reaching movements uses a representation of body motion to prepare compensations for impending self-generated accelerative loads on the arm. If so, stationary subjects who are experiencing illusory self-rotation should make reaching errors when pointing to a target. These errors should be in the direction opposite the Coriolis accelerations their arm movements would generate if they were actually rotating. To determine whether such compensations exist, we had subjects in four experiments make visually open-loop reaches to targets while they were experiencing compelling illusory self-rotation and displacement induced by rotation of a complex, natural visual scene. The paths and endpoints of their initial reaching movements were significantly displaced leftward during counterclockwise illusory rotary displacement and rightward during clockwise illusory self-displacement. Subjects reached in a curvilinear path to the wrong place. These reaching errors were opposite in direction to the Coriolis forces that would have been generated by their arm movements during actual torso rotation. The magnitude of path curvature and endpoint errors increased as the speed of illusory self-rotation increased. In successive reaches, movement paths became straighter and endpoints more accurate despite the absence of visual error feedback or tactile feedback about target location. When subjects were again presented a stationary scene, their initial reaches were indistinguishable from pre-exposure baseline, indicating a total absence of aftereffects. These experiments demonstrate that the nervous system automatically compensates in a context-specific fashion for the Coriolis forces associated with reaching movements.  (+info)

Congenitally blind individuals rapidly adapt to coriolis force perturbations of their reaching movements. (2/13)

Reaching movements made to visual targets in a rotating room are initially deviated in path and endpoint in the direction of transient Coriolis forces generated by the motion of the arm relative to the rotating environment. With additional reaches, movements become progressively straighter and more accurate. Such adaptation can occur even in the absence of visual feedback about movement progression or terminus. Here we examined whether congenitally blind and sighted subjects without visual feedback would demonstrate adaptation to Coriolis forces when they pointed to a haptically specified target location. Subjects were tested pre-, per-, and postrotation at 10 rpm counterclockwise. Reaching to straight ahead targets prerotation, both groups exhibited slightly curved paths. Per-rotation, both groups showed large initial deviations of movement path and curvature but within 12 reaches on average had returned to prerotation curvature levels and endpoints. Postrotation, both groups showed mirror image patterns of curvature and endpoint to the per-rotation pattern. The groups did not differ significantly on any of the performance measures. These results provide compelling evidence that motor adaptation to Coriolis perturbations can be achieved on the basis of proprioceptive, somatosensory, and motor information in the complete absence of visual experience.  (+info)

Mechanics of Coriolis stimulus and inducing factors of motion sickness. (3/13)

To specify inducing factors of motion sickness comprised in Coriolis stimulus, or cross-coupled rotation, the sensation of rotation derived from the semicircular canal system during and after Coriolis stimulus under a variety of stimulus conditions, was estimated by an approach from mechanics with giving minimal hypotheses and simplifications on the semicircular canal system and the sensory nervous system. By solving an equation of motion of the endolymph during Coriolis stimulus, rotating angle of the endolymph was obtained, and the sensation of rotation derived from each semicircular canal was estimated. Then the sensation derived from the whole semicircular canal system was particularly considered in two cases of a single Coriolis stimulus and cyclic Coriolis stimuli. The magnitude and the direction of sensation of rotation were shown to depend on an angular velocity of body rotation and a rotating angle of head movement (amplitude of head oscillation when cyclic Coriolis stimuli) irrespective of initial angle (center angle) of the head relative to the vertical axis. The present mechanical analysis of Coriolis stimulus led a suggestion that the severity of nausea evoked by Coriolis stimulus is proportional to the effective value of the sensation of rotation caused by the Coriolis stimulus.  (+info)

Behavioral neurobiology: a vibrating gyroscope controls fly steering maneuvers. (4/13)

A clever 'virtual reality' experiment reveals that specialized mechanosensory organs, rather than the eyes, orchestrate the high-performance staccato turns that characterize the flight behavior of a fly.  (+info)

Limb stiffness is modulated with spatial accuracy requirements during movement in the absence of destabilizing forces. (5/13)

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A study of the Coriolis effect on the fluid flow profile in a centrifugal bioreactor. (6/13)

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Rotational accelerations stabilize leading edge vortices on revolving fly wings. (7/13)

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Encoding properties of haltere neurons enable motion feature detection in a biological gyroscope. (8/13)

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Why does this matter? Well, the spinning of the atmosphere, relative to the surface of the planet, is what generates the Coriolis effect (go ahead and click on that link, then youll appreciate how simple my diagram is). This is the "force" that determines which direction hurricanes spin and governs how weather systems behave in the temperate latitudes (video), but it is pretty much missing from the tropical atmosphere because the tropics dont feel like they are spinning. Ever wonder why photos of the earth from space have big swirly looking clouds? This happens because the Coriolis "force" is always pushing against pressure gradients in the atmosphere (caused by temperature gradients), causing the atmosphere to swirl and preventing temperature gradients from collapsing. If the Coriolis force didnt balance pressure gradients, then all our air would just quickly flow from high to low pressure regions and the pressure everywhere would equalize immediately (like in a bathtub). This balance ...
The evolution of the haltere has provided flies with the capacity to monitor inertial forces separate from the aerodynamic forces produced by the wings. However, only two insect orders, Diptera and Strepsiptera, possess such structures [14]. The vast majority of insects instead possess the antecedent structures of halteres: an additional pair of wings. Thus, how most flying insects collect information about their body dynamics through mechanosensory structures is a long-standing problem in insect flight control. Although recent evidence suggests that the antennae of the hawkmoth Manduca sexta detect Coriolis forces and aid the animal in maintaining flight stability [15-18], the use of antennae as putative inertial sensors does not preclude other structures from serving a similar role.. Since halteres are evolutionarily derived from wings, the wings of all insects might be capable of providing information about body rotations. Indeed, recent electrophysiological and behavioural evidence suggests ...
Prerequisites:. MATH-UA 121 Calculus I (or equivalent) or MATH-UA 212 Math for Economics II (for Economics majors), with a grade of B- or better, though completion of MATH-UA 123 Calculus III (multivariate calculus) or MATH-UA 213 Math for Economics III (for Economics majors) is preferred and recommended. Students should also have some familiarity with introductory physics (even at the advanced high school level).. Description:. An introduction to the dynamical processes that drive the circulation of the atmosphere and ocean, and their interaction. This is the core of climate science. Lectures will be guided by consideration of observations and experiments, but the goal is to develop an understanding of the unifying principles of planetary fluid dynamics. Topics include the global energy balance, convection and radiation (the greenhouse effect), effects of planetary rotation (the Coriolis force), structure of the atmospheric circulation (the Hadley cell and wind patterns), structure of the ...
You have additional body force terms when the reference coordinates (fixed to the tank) moves or rotates in a non-inertial manner. You just add the source terms in the corresponding momentum equations, and youll see the sloshing in the tank. For your case (cyclic rotation), centrifugal force, Coriolis force, and inertia due to angular acceration will comprise the source terms ...
A laboratory study of the basis of visual acuity in man suggests that vision may not be a limiting factor in astronavigation among vertebrates. Field observations of pigeons navigating without the aid of celestial clues show that the birds shake their heads sideways at intervals. This confirms a prediction made by Ising on the assumption that birds use their semicircular canals for estimating latitude and directions from Coriolis force differences. (Author)(*NAVIGATION
Forward. Preface.. Acknowledgements.. 1. Introduction.. 1.1 Overview.. 1.2 Understanding Surface Waters.. 1.3 Modeling of Surface Waters.. 1.4 About This Book.. 2. Hydrodynamics.. 2.1 Hydrodynamic Processes.. 2.1.1 Water Density.. 2.1.2 Conservation Laws.. 2.1.2.1 Conservation of mass.. 2.1.2.2 Conservation of momentum.. 2.1.3 Advection and Dispersion.. 2.1.4 Mass Balance Equation.. 2.1.5 Atmospheric Forcings.. 2.1.6 Coriolis Force and Geostrophic Flow.. 2.2 Governing Equations.. 2.2.1 Basic Approximations.. 2.2.1.1 Boussinesq approximation.. 2.2.1.2 Hydrostatic approximation.. 2.2.1.3 Quasi-3D approximation.. 2.2.2 Equations in Cartesian Coordinates.. 2.2.2.1 1D equations.. 2.2.2.2 2D vertically averaged equations.. 2.2.2.3 2D laterally averaged equations.. 2.2.2.4 3D equations in sigma coordinate.. 2.2.3 Vertical Mixing and Turbulence Models.. 2.2.4 Equations in Curvilinear Coordinates.. 2.2.4.1 Curvilinear coordinates and model grid.. 2.2.4.2 3D equations in sigma and curvilinear ...
I blogged previously about the Aquarius project of a floating city in equatorial waters using the temperature differential between surface water & deep ocean water to generate power & as a side effect allow this deep water, which is rich in nutrients (being heavier than water such elements sink) to grow algae in surrounding containment ponds covering square miles. This seasteading programme now looks to me to be very feasible indeed. The great attraction to ideological seasteaders is that it gets them out from under conventional governments. The attraction for the non-ideological is equatorial sun & the happy chance that on the equator there are no Coriolis forces & thus no hurricanes. The attraction for scientists & bankers is no regulation. If seasteading gets going it will provide a major alternative to present government & laboratory conditions for small unit government systems. We may well find conventional governments trying to strangle this even when there is no possible benefit to them ...
The authors of the latest piece are Gabriel Vecchi and Brian Soden of the NOAAs Geophysical Fluid Dynamics Laboratory in New Jersey and the University of Miami, and the work was funded by both NOAA and NASA (no evidence of industry funding whatsoever). Basically, they note that higher sea surface temperatures (SSTs) in the vicinity of a hurricane could, in fact, increase the potential intensity (or, PI, how strong a storm could get if everything fell perfectly into place) of the storm. They state "With all other factors being equal, a local warming of SST would act to destabilize the overlying atmosphere and increase PI. However, remote SST changes can also influence PI through their influence on upper atmospheric temperatures. In the tropical free troposphere, where the Coriolis force is weak, temperature gradients are small and, on timescales longer than a few months, upper tropospheric temperature anomalies are determined by changes in the tropical-mean SST. Thus, local PI in the tropics is ...
This website provides an overview of ocean surface circulation. Satellite and model data allows high school students to investigate circulation patterns, navigation, associated weather and climate, natural hazards and marine resources. There are... (View More) five lessons affiliated with this site; the teacher and student guides to each can be accessed directly from the home page. (Note that these lessons are cataloged individually.) Other links provide information on background, impact, gathering data, researchers, data resources and a glossary. There are also online quizzes on the home page on navigation, coriolis force, satellites, ocean warming, energy balance, and ocean gyres. (View Less). ...
Lets pretend that youre on the top of a mountain in Arizona and you have a cannon. Lets make it a game; the object of the game is to to fire a cannonball and hit a flag pole thats on the top of another mountain straight north of you in Montana, almost a thousand miles (1600 km) away. Which way should we point our cannon? You might think this is easy - if the flag pole is north we should point our cannon north, right? This is a good guess but it wont really work. Why? Because the Earth is spinning. The Earths rotation would make it look like your cannonball was curving to the right so youd miss the flag pole! This is called the Coriolis effect. So what should you do? If you point your cannon a little bit toward the northwest, then when it curves to the right it will head right for the flag pole! The Coriolis effect makes things look like theyre curving toward the right in the northern hemisphere and toward the left in the southern hemisphere. This doesnt just work with cannonballs, it ...
We review recent insights into the dynamics of the solar convection zone obtained from global numerical simulations, focusing on two recent developments in particular. The first is quasi-cyclic magnetic activity in a long-duration dynamo simulation. Although mean fields comprise only a few percent of the total magnetic energy they exhibit remarkable order, with multiple polarity reversals and systematic variability on time scales of 6-15 years. The second development concerns the maintenance of the meridional circulation. Recent high-resolution simulations have captured the subtle nonlinear dynamical balances with more fidelity than previous, more laminar models, yielding more coherent circulation patterns. These patterns are dominated by a single cell in each hemisphere, with poleward and equatorward flow in the upper and lower convection zone respectively. We briefly address the implications of and future of these modeling efforts ...
In todays Radiotherapy Treatment Planning, RTP, it is common to use Computed Tomography, CT, together with Magnetic Resonance Imaging, MRI, where CT provides electron density information and a geometrical reference, and where MRI provides superior soft tissue contrast. To sim- plify the workflow and improve treatment accuracy, research groups have demonstrated how to exclude CT and use a MRI-only approach. In this thesis, a method for spatial distortion analysis, ultimately enabling quality assurance, QA, of the spatial accuracy of MRI, was defined, tested and evaluated.. A phantom was built to cover the entire clinical Field Of View, FOV, and 6mm-diameter fluid filled paintball markers were placed in a well-defined geometrical pattern within the phantom, and used as positive contrast. The phantom was imaged with a 3D Fast Gradient Echo sequence and a 3D Fast Spin Echo sequence. The markers were identified in the image data by a MATLAB-algorithm, and the location of the center of mass was ...
Key players in the global oxidative stress detection market: Abcam, EMD Millipore, Promega, Qiagen, Thermo Fisher Scientific, Amsbio, Bio-Rad, BioVision, Cell Biolabs, Cell Signaling Technology, Enzo Biochem, Genova Diagnostics, Rel Assay Diagnostics, Sigma-Aldrich, and tebu-bio.. Purchase a Copy of the Report @ http://www.rnrmarketresearch.com/contacts/purchase?rname=704148. Over the past decade, a number of new methods that help in detecting, measuring, and studying oxidative stress in live cells have been introduced. ELISA and flow cytometry, along with the relatively newer technologies, are being used to detect oxidative stress in the body, as well as other key vitals and composition details. In the last four years, the trend has shifted from changes in measuring instruments to incremental innovations in the reagents and consumables segment. In 2016, a new salimetrics uric acid assay kit was introduced. It is capable of high-efficiency oxidative stress research, with non-invasive saliva ...
The CellROX Variety Pack contains one vial (50 L) each of CellROX Green Reagent, CellROX Orange Reagent, and CellROX Deep Red Reagent. These reagents are novel fluorogenic probes for measuring cellular oxidative stress in live cells. These cell-permeant dyes exhibit bright fluorescence upon oxidatio
Unless specified otherwise, MP Biomedicals products are for laboratory research use only, not for human or clinical use. For more information, please contact our customer service department ...
For the full details, see the above links.. Now, to answer a couple questions:. Q: Why are the accuracy requirements different? Why cant they be the same for home and hospital use?. A: The basic answer was that the FDA doesnt think that manufacturers would be able to produce the volume of strips needed to meet the lay publics demands at those levels of accuracy. But as Lias put it, "With the technological advances in manufacturing that manufacturers may develop in order to meet this healthcare providers criteria, we hope they might apply some of that to the lay population and drive the accuracy better for both populations.". To that point, I think it is important for us as patients to request that language be added to the draft guidance documents that makes this ultimate goal - 5-10% accuracy for all meters - explicit. The hope would be that eventually these higher standards could be phased in to apply to all meters. More on how to comment below.. Q: Will these new standards drive prices ...
June 16, 2008 - Philips is showcasing what is reportedly the ever large bore PET/CT system-the Philips GEMINI TF Big Bore, with a full 85-centimeter bore for PET and CT scans, that allows for positioning flexibility and has a rigid table design to meet the accuracy requirements for treatment planning, according to the company.. The GEMINI TF Big Bore allows clinicians to image patients in the same position they are treated, expanding PET/CT capabilities beyond diagnosis, staging and follow-up to include therapy planning. The system combines Philips GEMINI TF time-of-flight PET imaging technologies with its Brilliance Big Bore CT localization to consolidate radiation oncology procedures, increase potential for greater accuracy and improve scheduling. It is reportedly the first system that offers tools and protocols to easily integrate PET functional images into radiation oncology, said to help to consolidate procedures while maintaining premium image quality.. The first Philips GEMINI TF Big ...
A checkweigher is an automatic or manual machine for checking the weight of packaged commodities. It is normally found at the offgoing end of a production process and is used to ensure that the weight of a pack of the commodity is within specified limits. Any packs that are outside the tolerance are taken out of line automatically. A checkweigher can weigh in excess of 500 items per minute (depending on carton size and accuracy requirements). Checkweighers can be used with metal detectors and X-ray machines to enable other attributes of the pack to be checked and acted upon accordingly. An automatic checkweigher incorporates a series of conveyor belts. These checkweighers are known also as belt weighers, in-motion scales, conveyor scales, dynamic scales, and in-line scales. In filler applications, they are known as check scales. Typically, there are three belts or chain beds: An infeed belt that may change the speed of the package and to bring it up or down to a speed required for weighing. The ...
Roberto Flores, Associate Research Professor at CIMNE: "As a structural analyst being asked to talk about my activities at CIMNE, Im in a strange position. None of my latest lines of work have anything to do with my original background. In particular, Ill be talking about oil well hydraulics and design of communication satellite orbits for coverage of high-latitude areas. There is some numerical analysis involved, but also (and this is the fun part) interesting physical facts and different accuracy requirements from what you might be used to.". ...
Adapter trimming is a prerequisite step for analyzing next-generation sequencing (NGS) data when the reads are longer than the target DNA/RNA fragments. Although typically used in small RNA sequencing, adapter trimming is also used widely in other applications, such as genome DNA sequencing and transcriptome RNA/cDNA sequencing, where fragments shorter than a read are sometimes obtained because of the limitations of NGS protocols. For the newly emerged Nextera long mate-pair (LMP) protocol, junction adapters are located in the middle of all properly constructed fragments; hence, adapter trimming is essential to gain the correct paired reads. However, our investigations have shown that few adapter trimming tools meet both efficiency and accuracy requirements simultaneously. The performances of these tools can be even worse for paired-end and/or mate-pair sequencing. To improve the efficiency of adapter trimming, we devised a novel algorithm, the bit-masked k-difference matching algorithm, which has O(k n
Get the best quality Benzene Monitoring Equipment and Monitoring Badges at reasonable prices that meet OSHA and NIOSH accuracy requirements.
Get the best quality Benzene Monitoring Equipment and Monitoring Badges at reasonable prices that meet OSHA and NIOSH accuracy requirements.
The objective of this thesis is to understand more about the role of inertia in the Earths dynamo. Studies of 2.5D and 3D dynamo models have reported finding dynamo action increasingly difficult to maintain as the strength of inertia measured by the Rossby number, Ro, is increased, (see for example, Fearn and Morrison (2001) or Christensen et al (1999)).. Fearn and Rahman (2004b) considered a non-linear mean-field a2-type dynamo model and investigated the effect inertia has on solutions. In their axisymmetric model, the effects of a non-axisymmetric flow are introduced to the problem via the so-called a-effect, which generates poloidal magnetic field through twisting the toroidal field lines. In the a2-type model, this effect also generates toroidal field from poloidal field. Fearn and Rahman (2004b) found that, as the strength of the inertia, Ro was increased, dynamo action was enabled to occur more easily. The non-axisymmetric generation process (i.e. the a-effect) is unaffected by Ro. In the ...
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Complete classification of discrete resonant Rossby/drift wave triads on periodic domains. Speaker: Miguel Bustamante (UCD). Time: 4.00PM. Date: Thursday 4th October 2012. Location: Mathematics Seminar Room, Room AG 1.01, First Floor, Agriculture Building, UCD Belfield. Abstract:. We consider the set of diophantine equations that arise when nonlinear wave interactions are considered to leading order in the amplitudes, in the context of the partial differential equation called "barotropic vorticity equation" on periodic domains. The solutions to this set of diophantine equations are of interest in atmosphere (Rossby waves) and Tokamak plasmas (drift waves), because they provide the values of the spectral wavevectors that interact resonantly via three-wave interactions. These wavenumbers come in "triads", i.e., groups of three wavevectors.. As a breakthrough in the field, we provide the full solution to the diophantine equations in the physically sensible limit when the Rossby deformation radius ...
Date: Fri, 20 Feb 2004 02:29:21 -0500 From: -S ,-s at adelphia.net, Subject: re: Monitoring CO2 Production with a Mass Flow Meter/Aussie terms Ken Anderson gathered and shared some terrific data with his CO2 mass flow measurement. Im really glad to see this as Ive been considering something similar. Id really like to know more about his MF measuring device. The ones Ive seen available had rather poor resolution and wouldnt give such nice measurements for a 5gal batch. Ken - what is the make and model on that ? I had considered going to MVD(Coriolis effect) flow meters but they are pretty expensive. The idea behind this effort is that, of the three main results of fermentation that concern us (sugar depletion, alcohol production, and CO2 production), why not look at CO2 production as a brewing aid? Just so - it and its linear correlates are THE most important fermentation parameters. The trick is to measure the volume under that curve youve plotted and calculate the total CO2 produced. ...
This study investigated the effect of a panel of judges on the movements and postures of cellists in performance. 24 expert cellists played a short piece of music, to a metronome beat, in the presence and absence of the panel. Kinematic analyses showed that in the presence of the panel the temporal execution of left arm shifting movements became less variable and closer to the metronome beat. In contrast, the panels presence had no reliable effect on their spatial accuracy. A detailed postural analysis indicated that left elbow angle during execution of a given high note was correlated with level of heart rate, though the nature of this correlation was systematically affected by the relevant participants subjective state: if anxious, a higher heart rate correlated with a more flexed elbow, if not anxious then with a more extended elbow. Our results suggest a change in physiological state alone does not reliably predict a change in behaviour in performing cellists, which instead depends on the
The respiratory time and flow profile at volitional exercise termination. Gross cycling efficiency is not altered with and without toe-clips
The solar dynamo is known to be associated with several periodicities, with the nearly 11/22 yr cycle being the most pronounced one. Even though these quasiperiodic variations of solar activity have been attributed to the underlying dynamo action in the Suns interior, a fundamental theoretical description of these cycles is still elusive. Here, we present a new possible direction in understanding the Suns cycles based on resonant nonlinear interactions among magnetohydrodynamic (MHD) Rossby waves. The WKB theory for dispersive waves is applied to magnetohydrodynamic shallow-water equations describing the dynamics of the solar tachocline, and the reduced dynamics of a resonant triad composed of MHD Rossby waves embedded in constant toroidal magnetic field is analyzed. In the conservative case, the wave amplitudes evolve periodically in time, with periods on the order of the dominant solar activity timescale (∼11 yr). In addition, the presence of linear forcings representative of either ...
TY - JOUR. T1 - Accuracy and procedural characteristics of standard needle compared with radiofrequency needle transseptal puncture for structural heart interventions. AU - Sharma, Gaurav. AU - Singh, Gagan. AU - Smith, Thomas W R. AU - Fan, Dali. AU - Low, Reginald. AU - Rogers, Jason H. PY - 2017/5/1. Y1 - 2017/5/1. N2 - Objectives: Our objectives were to assess for differences between standard and radiofrequency (RF) needle in procedural times, success, and spatial accuracy. Background: Targeted transseptal (TS) puncture is essential for structural heart interventions. Spatial accuracy of standard versus RF needle has not been reported. Methods: Consecutive patients undergoing structural heart interventions requiring TS puncture were studied retrospectively. A standard needle was alternated with a RF needle. Procedural success and times were recorded. Measurements based on intraprocedural transesophageal echocardiograms of the intended versus final TS crossing site were obtained. Pre-puncture ...
Precision farming in arable agriculture and horticulture allows conservative use of resources that are applied according to plant needs. The growing concern for sustainability in crop production has accentuated the significance of our work to develop a rapid, sensitive and non-destructive spectroscopic method for real-time monitoring of plant water stress. Elucidation of crop water status before the onset of irreversible cellular damage is critical for effective water management to ensure maximum crop yield and profit margin. A two-component bio-sensing system comprising transgenic Indicator Plants and a spectrometer-linked stereoscopic microscope was developed to detect early signs of water stress before the permanent wilting point is reached. The Indicator Plants are transgenic Petunia hybrida genetically engineered with a drought-responsive promoter-linked enhanced green fluorescent protein marker gene (EGFP). No EGFP fluorescence was detected prior to induction of dehydration stress. ...
MINNEAPOLIS, November 25, 2015 (PR NEWSWIRE) - ARKRAY USA, Inc., a leader in diabetes care products, continues to provide evidence demonstrating the accuracy of its blood glucose meter systems. Last week at the World Congress on Insulin Resistance, Diabetes and Cardiovascular Disease in Los Angeles, studies showed that both the Companys GLUCOCARD® 01 meter and the Assure® Prism multi-user meter met high accuracy requirements. The ability to accurately measure glucose levels in blood is essential for people afflicted with diabetes so they can effectively manage the disease, according to the American Diabetes Association (ADA).. The Assure Prism system was shown to meet stringent ISO 15197:2013 system accuracy performance criteria. The Assure Prism multi-user meter is designed for use by healthcare professionals who monitor diabetes patients in long-term care environments such as nursing homes.. The GLUCOCARD 01, designed for use by consumers, was shown to meet global accuracy performance ...
For measuring angular rate, numerous types of gyroscopes have been realized over the past years using MEMS technology, where current state-of-the-art MEMS gyroscopes show formidable performance in range, resolution and noise floor [12-15]. MEMS gyroscopes are typically no haltere-based systems, are generally heavily underdamped2 and operate at rather high frequencies. By contrast, the flys haltere system is a close to critically damped system and operates around the flys wing beat frequency (130-150 Hz) [9]. Obviously, the flys haltere system has developed under evolutionary pressure and therefore addresses the sensory needs of the fly. As a result, not only the operation principle is different from those generally used in MEMS gyroscopes, but also the performance may score high on metrics other than generally used for MEMS gyroscopes. For example, bandwidth and response time may be far more essential for flies than (bias-)stability and noise floor, as the halteres have been proven to aid in ...
In this paper, consideration is given to the dynamic response of a rotating cantilever twisted and inclined airfoil blade subjected to contact loads at the free end. Starting with the basic geometrical relations and energy formulation for a rotating Timoshenko beam constrained at the hub in a centrifugal force field, a system of coupled partial differential equations are derived for the combined axial, lateral and twisting motions which includes the transverse shear, rotary inertia, and Coriolis effects, as well. In the mathematical formulation, the torsion of the thin airfoil also considers a very general case of shear center not being coincident with the CG (center of gravity) of the cross section, which allows the equations to be used also for analyzing eccentric tip-rub loading of the blade. Equations are presented in terms of axial load along the longitudinal direction of the beam which enables us to solve the dynamic pulse buckling due to the tip being loaded in the longitudinal as well as ...
Another significant scientific error can be seen on the radar screens showing these Super Cells. In the Northern Hemisphere, cyclonic storms rotate counter-clockwise due to the Coriolis Effect caused by Earths rotation. Yet, several times in the film the cyclones are shown moving clockwise.". ReplyDelete ...
Satellite tracking of large pelagic fish provides insights on free-ranging behaviour, distributions and population structuring. Up to now, such fish have been tracked remotely using two principal methods: direct positioning of transmitters by Argos polar-orbiting satellites, and satellite relay of tag-derived light-level data for post hoc track reconstruction. Error fields associated with positions determined by these methods range from hundreds of metres to hundreds of kilometres. However, low spatial accuracy of tracks masks important details, such as foraging patterns. Here we use a fast-acquisition global positioning system (Fastloc GPS) tag with remote data retrieval to track long-term movements, in near real time and position accuracy of |70 m, of the worlds largest bony fish, the ocean sunfish Mola mola. Search-like movements occurred over at least three distinct spatial scales. At fine scales, sunfish spent longer in highly localised areas with faster, straighter excursions between them. These
Three-dimensional (3D) bioprinting offers innovative research vectors for tissue engineering. However, commercially available bioprinting platforms can be cost prohibitive to small research facilities, especially in an academic setting. The goal is to design and fabricate a low-cost printing platform able to deliver cell-laden fluids with spatial accuracy along the X, Y, and Z axes of 0.1 mm. The bioprinter consists of three subassemblies: a base unit, a gantry, and a shuttle component. The platform utilizes four stepper motors to position along three axes and a fifth stepper motor actuating a pump. The shuttle and gantry are each driven along their respective horizontal axes via separate single stepper motor, while two coupled stepper motors are used to control location along the vertical axis. The current shuttle configuration allows for a 5 mL syringe to be extruded within a work envelope of 180 mm × 160 mm × 120 mm (X, Y, Z). The shuttle can easily be reconfigured to accommodate larger ...
N. A. Coleman, L. Lee, G. S. Ridenour, Stochastic Modeling Of Hydraulic Geometry Using An Extremal Hypothesis, Proc. CMCGS 2018, 7th Annual Int. Conf. on Computational Mathematics, Computational Geometry & Statistics, ISSN 2251-1911, Singapore, Apr 9-10, 2018, Accepted.. L. Lee, M. Jones, G. S. Ridenour, S. J. Bennett, A. C. Majors, B. L. Melito, and M. J. Wilson, Comparison of Accuracy and Precision of GPS-Enabled Mobile Devices, Proc. IEEE CIT 2016, 16th IEEE Int. Conf. on Computer and Information Technology, ISBN 978-1-5090-4314-9, Yanuca Island, Fiji, Dec 7-10, 2016.. L. Lee, and G. S. Ridenour, Using Data Mining to Investigate Interaction between Channel Characteristics and Hydraulic Geometry Channel Types, Proc. 2014 IEEE Symp. Series on Computational Intelligence, ISBN: 978-1-4799-4519, Orlando, Florida, USA, Dec 9-12, 2014, pp. 479-488.. L. Lee, M. Jones, G. S. Ridenour, M. P. Testa, and M. J. Wilson, Investigating and Comparing Spatial Accuracy and Precision of GPS-Enabled ...
Reference source not found.2). This level of reservation provided the baseline for comparisons of the expected reservation levels for each group.. Records for the 50 most speciose families of Australian vascular flora were supplied by the Australian Government Department of the Environment, Water, Heritage and the Arts through the Australian Natural Heritage Assessment Tool (ANHAT) database. This included data on species which have yet to be formally described. This database has been compiled from specimen and site records held in State, Territory and Commonwealth flora and fauna collections and wildlife atlases, and from the work of individual researchers. ANHAT is a custom-designed analysis tool built on Microsoft Access (Microsoft, 2003) and ArcGIS geographic information system (ESRI, 2005).. Records dated pre-1950 were excluded from the data sets, as earlier historical site records rarely have sufficient spatial accuracy for this type of analysis. Furthermore, site records with a spatial ...
Image-guided radiation treatments routinely utilize implantable devices, such as radio-opaque fiducials or brachytherapy spacers, for improved spatial accuracy.
We study the molecular mechanisms underlying bacterial multiplication. Bacteria are renowned for their fast multiplication. During their short cell cycles, bacteria grow, replicate and segregate their chromosomes and divide. They do all of this with sometimes blazing speed and with remarkable temporal and spatial accuracy, which explains their success. Despite the medical, agricultural and ecological importance of bacteria, little is known about the molecular mechanisms involved in growth, DNA segregation, cell division and cell morphogenesis. Similarly, the temporal and spatial mechanisms regulating these essential processes remain largely elusive. We address these fundamental questions using genetics, biochemistry, quantitative fluorescence microscopy and modeling.. ...
Protein A Gold Conjugates. Cytodiagnostics Protein A conjugated gold nanoparticles can be used for secondary detection of antibody probes in assays such as lateral flow, immunoblotting, ELISA, light microscopy and electron micr
The most precision designed toy gyroscope on the market. Tiny ball bearings and near perfect balance keep the gyroscope spinning for several minutes. Use a string or T-handle to operate. Durable enough for classroom demonstration. Made in USA. Please Note: This product is only available for purchase by homeschools, consumers, and public institutions. Please Note: This product is only available for purchase by homeschools, consumers, and public institutions. Please Note: Covers and interior aesthetic details may vary from the images shown. Content is identical. Precision Gyroscope
Wakefield, MA (PRWEB) October 31, 2014 -- According to a new market study from Flow Research, the market for Coriolis flowmeters totaled $1.3 billion in 2013,
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The primary function of the vestibular system is to provide the brain with information about the body\s motion and orientation. The absence of this information causes blurred vision and spatial disorientation, vertigo, dizziness, imbalance, nausea, vomiting, and other symptoms often characterize dysfunction of the vestibular system. Our aim is to design vestibular prosthesis using COMSOL Multiphysics 4.2a. In this model there are two modes driving mode and sensing mode. The driving force is given in the x-direction and the displacement due to the Coriolis effect is sensed in the y-direction. In the prosthesis, the three semicircular canals are replaced by 3-axis MEMS gyroscopes. The microscopic gyroscope senses angular motion of the head and generates voltages proportional to the corresponding angular accelerations. Then, voltages are converted into electric current pulse relating angular acceleration to spike count in vestibular nerve.. ...
Looking for online definition of gyroscope in the Medical Dictionary? gyroscope explanation free. What is gyroscope? Meaning of gyroscope medical term. What does gyroscope mean?
The response to different force load ranges and actuation at low energies is of considerable interest for applications of compliant and flexible devices undergoing large deformations. We present a review of technological platforms based on nitride materials (aluminum nitride and silicon nitride) for the microfabrication of a class of flexible micro-electro-mechanical systems. The approach exploits the material stress differences among the constituent layers of nitride-based (AlN/Mo, Si x N y /Si and AlN/polyimide) mechanical elements in order to create microstructures, such as upwardly-bent cantilever beams and bowed circular membranes. Piezoresistive properties of nichrome strain gauges and direct piezoelectric properties of aluminum nitride can be exploited for mechanical strain/stress detection. Applications in flow and tactile sensing for robotics are described.
Radiotherapy is a common treatment option for malignant tumors. The use of magnetic resonance imaging in radiotherapy is increasing world-wide and sets additional requirements on the image quality compared to diagnostics applications. Thereby, the overall goal of the present project was to develop and implement a structured image quality assurance approach for MRI in radiotherapy. Specific aspects studied was the image quality, spatial accuracy and spin-lattice relaxation time quantification. Measurements using three different phantoms were performed at the positron emission tomography magnetic resonance (PET/MR) scanner at Norrlands Univeristy Hosptial, Umeå. The image quality was evaluated using the American College of Radiology (ACR) phantom and its accompanying tests. ACR phantom measurements were performed once or twice daily throughout the project. The results from the ACR tests were implemented in an automatic analysis program and displayed on a website, accessible from the hospital ...
The benthic boundary layer on the continental slope is a region in which isopycnal surfaces intersect topography. It is, in consequence, particularly subject to variability caused by reflecting internal gravity waves, as well as by trapped baroclinic slope waves. Observations made using an array of moorings off the west slope of the Porcupine Bank reveal the presence there of a northerly along-slope current at depths of 3000-4000 m, which extends to some 20 km off-slope, and of waves of periods 2-9 days trapped within about 10 km (ca. 1 Rossby radius) of the slope. Lower-frequency variations are dominant at greater distances. The tide has a significant spectral peak, with a first subharmonic apparent near the slope. Measurements of the temperature structure in the boundary layer have been made at 1705 m on the Hebrides slope and at 3447 m off the Porcupine Bank. In both areas the boundary layer structure is dominated by asymmetrical M2 variations in the isopycnal surfaces, with displacements ...
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Bronkhorst Coriolis mass flow controller combined with gear pump to dose small solvent flows into a reactor vessel at low pressure
Head halter traction or cervical halter is a type of spinal traction used in cervical ailments and injuries. It is similar to skin traction used on the limbs.
Learn how the handler should show a mare and stallions teeth to the judge when competing in AQHA halter classes. The judge examines for parrot mouth.
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. Vibrating Structure Gyroscope Market research report is a professional and in-depth study on the current state of this market. Various definitions and classification of the industry, applications of the industry and chain structure are given. Present day status of the Vibrating Structure Gyroscope market in key regions is stated and industry policies and news are analysed.. In depth analysis of an industry is a crucial thing for various stakeholders like investors, CEOs, traders, suppliers and others. The Vibrating Structure Gyroscope industry research report is a resource, which provides technical and financial details of the industry.. Browse Detailed TOC, Tables, Figures, Charts and Companies Mentioned in Vibrating Structure Gyroscope Market Research [email protected] http://www.360marketupdates.com/10307026. Next part of the Vibrating Structure Gyroscope market analysis report speaks about the manufacturing process. The ...
Offshore, currents are dominated by seasonal winds. In the spring and early summer (typically March-July), coastal winds blow from north to south, driving the offshore California Current and the process of upwelling.. The California Current is part of the clockwise-flowing North Pacific gyre. During the spring-summer upwelling season, the strongly southward currents are deflected offshore due to the Coriolis effect, a phenomenon caused because the earth is a rotating sphere. As surface water is pushed offshore, cold, deep waters from the California Undercurrent are upwelled to the surface over the continental shelf.. Plants require sunlight and nutrients for growth, and they thrive in the presence of nutrients brought to the surface during upwelling. Single-celled plants like diatoms, in particular, increase in abundance dramatically during the upwelling season. The resultant phytoplankton blooms are the foundation of the rich sanctuary food webs, which involve zooplankton, benthic and pelagic ...
Stereotactic Body Radiotherapy (SBRT) is increasingly used to treat a variety of head and neck tumors as a result of its highly conformal dose distributions and stereotactic spatial accuracy in delivery. Our experience and other previous reports have shown that SBRT is technically feasible, well-tolerated and compares favorably to other alternatives of salvage therapy in the management of patients with recurrent and/or previously irradiated head and neck cancers. Furthermore, it has the advantage of a shorter treatment schedule, greater compliance, and safe delivery in the outpatient setting. This affords an opportunity to introduce SBRT as a definitive treatment in select patients. This review presents an overview of the use of SBRT for managing head and neck tumors by highlighting the existing indications and the expanding role of SBRT in managing these patients.
Plasma mediated ablation of collagen gels and porcine cornea was studied at various laser pulse durations in the range from 350 fs to 1 ns at 1053 nm wavelength. A time resolved stress detection technique was employed to measure transient stress profiles and amplitudes. Optical microscopy was used to characterize ablation craters qualitatively, while a wide band acoustic transducer helped to quantify tissue mechanical response and the ablation threshold. The ablation threshold was measured as a function of laser pulse duration and linear absorption coefficient. For nanosecond pulses the ablation threshold was found to have a strong dependence on the linear absorption coefficient of the material. As the pulse length decreased into the subpicosecond regime the ablation threshold became insensitive to the linear absorption coefficient. High quality ablation craters with no thermal or mechanical damage to surrounding material were obtained with 350 fs laser pulses. The mechanism of optical breakdown ...
Abstract. There is mounting evidence that resolving mesoscale eddies and western boundary currents as well as topographically controlled flows can play an important role in air-sea interaction associated with vertical and lateral transports of heat and salt. Here we describe the development of the Met Office Global Coupled Model version 2 (GC2) with increased resolution relative to the standard model: the ocean resolution is increased from 1/4 to 1/12° (28 to 9 km at the Equator), the atmosphere resolution increased from 60 km (N216) to 25 km (N512) and the coupling period reduced from 3 hourly to hourly. The technical developments that were required to build a version of the model at higher resolution are described as well as results from a 20-year simulation. The results demonstrate the key role played by the enhanced resolution of the ocean model: reduced sea surface temperature (SST) biases, improved ocean heat transports, deeper and stronger overturning circulation and a stronger Antarctic ...
It would seem to me that the moth surely has a network of nerves that would need to be delicately aligned in the reinstallation procedure and like wise when the antenna is removed, that must be a delicate operation too, it would seem. I wonder how many people there are out there now, who are trying to replicate this experiment and are going about ripping the antennae off of flying insects and then trying to glue them back on ...
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Hello everyone, I have a problem while calculate dynamic for gyroscope system on bicycle. I use Lagranges equation for modelling precession effect, with generalized coordinate is a angular, the applied generalized force will be a torque. The model of gyroscope system like picture below ...
article{95aeff23-01d1-4b7b-b21a-f77d899813c5, abstract = {Analysis of bioreactors is central for successful design and operation of biotechnical processes. The bioreactor should provide optimum conditions, with respect to temperature, pH and substrate condition, for example, besides its basic function of containment. The ability to control the substrate concentration is an important function of the bioreactor. The substrate concentration can be subject to spatial variation-advertently or inadvertently and may also change with time in batch or fed-batch operation. The cellular metabolism will depend on local concentrations in the reactor, as well as on the physiological status of the cell. in order to understand the bioreactor operation, cellular metabolism must be considered together with the flow profile and the mass transfer characteristics of the bioreactor. Some fundamental aspects of bioreactor operation for yeast and bacterial cultivations are discussed in this short review.}, author = ...
Structures and architectures for gyroscopes, accelerometers, micro strain gauges for direct application to rigid structures e.g., steel, and levitated MEMS ...
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This study investigated volatiles released from the feet and trunk of human volunteers and isolated predominantly aldehydes and carboxylic acids as the electrophysiologically-active components using antennae of Ae. aegypti. Electrophysiological activity for some of these aldehydes and carboxylic acids from human skin odors have previously been reported for various mosquito species. For example octanal and nonanal, identified from the human feet, trunk and armpit were reported to elicit electrophysiological response in antennae of Ae. aegypti [22,23] and Aedes mcintoshi [24], a major vector of Rift Valley fever virus, and Culex quinquefasciatus [25], the major vector of West Nile virus in bird headspace volatiles, respectively. Carboxylic acids were reported to elicit EAG responses in Ae. aegypti [22,23], An. gambiae [26] and Cx. quinquefasciatus [27]. These findings emphasize the importance of aldehydes and carboxylic acids in host seeking behavior of Ae. aegypti. Both aldehydes and carboxylic ...
A new study led by researchers from Michigan State University in Grand Rapids found that people treated with tricyclic antidepressants were less likely to require drug treatment for Parkinsons disease.. On further investigation, the researchers found that rats treated with the tricyclic antidepressant nortriptyline demonstrated a reduction in levels of abnormal alpha-synuclein (a-synuclein) protein in the brain.. Lead study author Tim Collier, of the Department of Translational Science and Molecular Medicine at Michigan State University, and colleagues recently reported their findings in the journal Neurobiology of Disease.. Parkinsons disease is a progressive neurological disorder characterized by tremors, limb stiffness, and problems with movement and coordination.. Around 60,000 people in the United States are diagnosed with Parkinsons every year, and up to 1 million people in the U.S. are living with the disease.. A buildup of the protein a-synuclein is considered a hallmark of ...
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Global Gyroscope Inclinometer Market: This market research report focuses on Past-Current Size, Shares, Trends, Price, Segment & Forecast 2017-2022.
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Georgetown was going to pose a risk, but this is unacceptable. Chris fielded that question. We ve been working with Clark to formulate new threat responses for the family s safety, especially the boys, but you must realize, sir, that any significant change is going to require eliminating the Secret Service from the security profile altogether. All they know is duck, cover, and get the hell out of Dodge. This last incident proved that we can t protect the boys if we re limited to such low-tech solutions. Amen, Philip and Hamilton said as one.. Alan cleared his throat uncomfortably, feeling obliged to play the devil s advocate. But that comes with a serious risk of exposing some of our more covert technology. Lex slammed his hand on the table and came to his feet. Fuck the risk! What good is any of this-- he gestured wildly at the technology that surrounded them if my sons are dead? The shock and silence that engulfed the table was profound. Of the fourteen people in the room, only a handful had ...
A borehole system having a permeability controlled flow profile including a tubular string; one or more permeability control devices disposed in the string; and the plurality of permeability control devices being selected to produce particular pressure drops for fluid entering or exiting various discrete locations along the string and method.
Talk}} Fixed a few minor syntax errors and reworked the top of the article a bit. As an article it is quite far along though it still has a ways to go. [[User:Strife Onizuka,Strife Onizuka]] 03:32, 29 January 2007 (PST) == Intro is awful == "gymbal lock" is something that affects mechanical systems with gyroscopes. A quaternion rotation is a mathematical abstraction. The term simply does not apply, and only serves to confuse things. The reference to "SLERP" without a link is useless. [[User:Doran Zemlja,Doran Zemlja]] :Gimbal lock effects Euler angles to which you wrote an article using them everywhere without mention it; it is a gross oversight. That sentence is a bit complex on review and yes there is no SLERP article but that doesnt mean someone wont write one (it is better to leave open links then no links; no links give no hint that a page should be created). I may write a short one tomorrow, I already have a function that implements it (Ive just been pressed for time). I will find a ...
Quality black rope halter and lead with tooled leather overlay on nose.Colors: black, blue, lime, pink, purple or turquoise.Horse size.
Your device may have sensors that provide information to assist in a better understanding of your location. For example, an accelerometer can be used to determine things like speed, or a gyroscope to figure out direction of travel ...
Your device may have sensors that provide information to assist in a better understanding of your location. For example, an accelerometer can be used to determine things like speed, or a gyroscope to work out direction of travel ...
OMeara A, Holbro A, Meyer S, Martinez M, Medinger M, Buser A, Halter J, Heim D, Gerull S, Bucher C, Rovo A, Kuehne T, Tichelli A, Gratwohl A, Stern M, Passweg J ...
New double staining technology allows for easier staining protocols and faster turnaround time. The "cocktail" approach can be used when two primary antibodies are from different host species, as is the example of these two antibodies (mouse monoclonal antibody against HBsAg and rabbit polyclonal antibody against HBcAg). A secondary antibody or detection system can also be a cocktail of horseradish peroxidase (HRP) labeled anti-rabbit and alkaline phosphatase (AP) labeled anti-mouse. This allows simultaneous incubation of both primary antibodies, followed by simultaneous incubation of the cocktailed secondary detection reagents. This is a huge time saver compared to sequential staining techniques. The only sequential step in the "cocktail" approach is the application of DAB chromogen followed by application of fast red (FR) chromogen ...
Krabbe disease is a rare, hereditary degenerative disorder of the central and peripheral nervous systems. It is characterized by the presence of globoid cells (cells that have more than one nucleus), the breakdown of the nerves protective myelin coating, and destruction of brain cells. Krabbe disease is one of a group of genetic disorders called the leukodystrophies. These disorders impair the growth or development of the myelin sheath, the fatty covering that acts as an insulator around nerve fibers, and cause se-vere deterioration of mental and motor skills. Myelin is a complex substance made up of at least 10 different enzymes. Each of the leukodystrophies affects one (and only one) of these substances. Krabbe disease is caused by a deficiency of galactocere-brosidase, an essential enzyme for myelin metabolism. The disease most often affects infants, with onset before age 6 months, but can occur in adolescence or adulthood.. Symptoms include irritability, unexplained fever, limb stiffness, ...
Most insects use a method that creates a spiralling leading edge vortex. These flapping wings move through two basic half-strokes. The downstroke starts up and back and is plunged downward and forward. Then the wing is quickly flipped over (supination) so that the leading edge is pointed backward. The upstroke then pushes the wing upward and backward. Then the wing is flipped again (pronation) and another downstroke can occur. The frequency range in insects with synchronous flight muscles typically is 5 to 200 hertz (Hz). In those with asynchronous flight muscles, wing beat frequency may exceed 1000 Hz. When the insect is hovering, the two strokes take the same amount of time. A slower downstroke, however, provides thrust.[6][7] Identification of major forces is critical to understanding insect flight. The first attempts to understand flapping wings assumed a quasi-steady state. This means that the air flow over the wing at any given time was assumed to be the same as how the flow would be over ...
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In a method for monitoring strain variations of a strain responsive element of a micromachined sensor device while subjected to outside parameter conditions, at least two oscillation resonance modes of said element are activated and interrogated optically. Thereby correspondingly at least two resonance frequencies are obtained. From parameter/frequency characteristics of said device correspondingly at least two parameter values are derived.
deg / h due to nonlinear coupling between the countertraveling modes. This coupling arises due to the backreflection of modes from moving index gratings, induced by rotation. Lock-in threshold is directly proportional to the strength of nonlinear coupling and spatial overlap of the modes energy densities with periodic index perturbations.. © 2016 Optical Society of America. Full Article , PDF Article ...
... - Okay, where did that bulge on the left side come from? I guess thatll have to be fixed. http://img58.photobucket.com/albums/v178/cra
Experiments by University of California Riverside entomologists demonstrate mosquitoes are attracted first to carbon dioxide, then to skin odors; findings could lead to more effective mosquito traps. The carbon dioxide we exhale and the odors our skins emanate serve as crucial cues to female mosquitoes on the hunt for human hosts to bite and spread diseases such as malaria, dengue and yellow fever.. Two entomologists at the University of California, Riverside have now performed experiments to study how female Aedes aegypti -- mosquitoes that transmit yellow fever and dengue -- respond to plumes of carbon dioxide and human odor.. The researchers report in the October 15 issue of the Journal of Experimental Biology that puffs of exhaled carbon dioxide first attract these mosquitoes, which then proceed to follow a broad skin odor plume, eventually landing on a human host.. The results from the study by Ring Cardé, a distinguished professor of entomology at the University of California, ...
The exact expression of the Coriolis force is a bit more complex than the product of the Coriolis parameter and parcel's ... is the Coriolis force per unit mass (the sign ambiguity depends on the mutual orientation of the force vector and n). In the ... the Coriolis force is always inward (and positive), and the pressure force outward (and negative) irrespective of the ... Coriolis force. This action, due to the Earth's rotation, tends to displace any body travelling in the northern (southern) ...
Coriolis-Stokes force McWilliams, J.; Sullivan, P.; Moeng, C. (1997), "Langmuir turbulence in the ocean", Journal of Fluid ...
Nathan Gasser (2000-08-10). Solar Heating and Coriolis Forces. University of Tennessee at Knoxville. Retrieved on 2009-05-31. ... However, the Coriolis effect caused by the rotation of Earth causes winds to steer to the right of what would otherwise be ... Many tropical cyclones are eventually forced toward the northeast by extratropical cyclones in this manner, which move from ...
h) Mass flowmeter (Coriolis force).. Flow measurement methods other than positive-displacement flowmeters rely on forces ... Coriolis flowmeters[edit]. Using the Coriolis effect that causes a laterally vibrating tube to distort, a direct measurement of ... A Lorentz force velocimetry system is called Lorentz force flowmeter (LFF). An LFF measures the integrated or bulk Lorentz ... Electromagnetic, ultrasonic and Coriolis flowmeters[edit]. A magnetic flowmeter at the Tetley's Brewery in Leeds, West ...
... and the Coriolis force (which depends upon velocity) is activated. According to the article fictitious force, the Coriolis ... Moreover, it is the Coriolis force that makes it possible for the fictitious force to change sign depending upon which of ωI, ... In the geometry of this example, this Coriolis force has twice the magnitude of the ubiquitous centrifugal force and is exactly ... The Coriolis force is F C o r = − 2 m Ω × v B = 2 m ω S ω R R u R {\displaystyle \mathbf {F} _{\mathrm {Cor} }=-2m{\boldsymbol ...
ISBN 0-691-07239-6. Stommel, Henry M.; Moore, Dennis W. (1989). An Introduction to the Coriolis Force. Columbia University ... and treat the extra terms as if they were forces, in which case they are called fictitious forces. The component of any such ... fictitious force normal to the path of the particle and in the plane of the path's curvature is then called centrifugal force. ... When describing general motion, the actual forces acting on a particle are often referred to the instantaneous osculating ...
Coriolis force, Hadley cell and other things: In the northern hemisphere, the Coriolis effect causes wind and water currents to ... The Coriolis force also plays a part. The trade winds push water west. At the doldrums it flows back east producing the ... The Coriolis effect bends the westerlies and trade winds slightly clockwise in the northern hemisphere. Hot air rises at the ...
ISBN 0-9645778-7-9 Coriolis Forces. Palanquin Press, 2000. ISBN 1-891508-21-0 Carolyn Elkins Homepage Tar River Poetry Homepage ...
... this and the Coriolis force help develop a strong storm. The storm tracks northeast along the East Coast past the Carolinas, ... The storm produced sustained tropical storm force winds along with hurricane force wind gusts. The highest wind gust recorded ... On the coast of Massachusetts, Hurricane Force gusts up to around 80 mph (130 km/h) along with sustained winds between 50 and ... and hurricane-force winds. The storm killed 353 people. The Ash Wednesday Storm of 1962 - Caused severe tidal flooding and ...
Friction slows the flow, lessening the effect of the Coriolis force. As a result, the pressure gradient force has a greater ... is the theoretical wind that would result from an exact balance between the Coriolis force and the pressure gradient force. ... As soon as the air starts to move, however, the Coriolis "force" deflects it. The deflection is to the right in the northern ... The deflection increases until the Coriolis and pressure gradient forces are in geostrophic balance: at this point, the air ...
The Rossby number is the ratio of inertial force to Coriolis force, terms v ⋅ ∇ v ∼ U 2 / L {\displaystyle v\cdot \nabla v\sim ... In low-pressure systems, centrifugal force is negligible and balance is between Coriolis and pressure forces (called ... in tornadoes the Coriolis force is negligible, and balance is between pressure and centrifugal forces (called cyclostrophic ... Coriolis effect Centrifugal force M. B. Abbott & W. Alan Price (1994). Coastal, Estuarial, and Harbour Engineers' Reference ...
Coriolis effects are introduced as well as lateral forcing by gravity. Laplace obtained these equations by simplifying the ... Newton, in the Principia, provided a correct explanation for the tidal force, which can be used to explain tides on a planet ... Darwin's harmonic developments of the tide-generating forces were later improved when A T Doodson, applying the lunar theory of ... While Newton explained the tides by describing the tide-generating forces and Bernoulli gave a description of the static ...
Coriolis effects are introduced as well as lateral forcing by gravity. Laplace obtained these equations by simplifying the ... Laplace force. Laplace filter. Laplace functional. Laplacian matrix. Laplace motion. Laplace plane. Laplace pressure. Laplace ... This paper is also remarkable for the development of the idea of the scalar potential.[9] The gravitational force acting on a ... An intellect which at a certain moment would know all forces that set nature in motion, and all positions of all items of which ...
Coriolis effect in a manner that allows for learning and correction of errors experienced from self-generated Coriolis forces. ... Even when the load force was suddenly changed the grip force never lagged in the phase relationship with the load force, ... They found that even when giving subjects different known loads the grip force was able to predict the load force. ... context specific compensations for expected coriolis forces" (pdf). Journal of Neurophysiology. 83 (6): 3230-3240. PMID ...
The Coriolis force and sea ice surface tilt have also been invoked. These driving forces induce a state of stress within the ... Wind is thought to be the main driving force along with ocean currents. ... a line of broken ice forced downward (to make up the keel) and upward (to make the sail); and 3) Hummock, an hillock of broken ...
... and the action of the Coriolis force acting on those moving masses. The Coriolis force is caused by the planet's rotation on ... and the primary struggle is between the Coriolis force and the pressure gradient force. Balance between these two forces is ... Air masses that begin moving poleward are deflected eastward by the Coriolis force (true for either hemisphere), which for ... with the Coriolis force acting on those masses, drives the jet streams. The Polar jets, at lower altitude, and often intruding ...
Their major restoring force is the change in Coriolis force with latitude. Their wave amplitudes are usually in the tens of ... usually between the Coriolis force and a coastline or the equator). There are two types, coastal and equatorial. Kelvin waves ... The Coriolis effect results in a deflection of fluid flows (to the right in the Northern Hemisphere and left in the Southern ... They are forced by winds circulation around low pressure (cyclonic). Gulf stream The Gulf Stream, together with its northern ...
ISBN 978-0820472317 Zoltan, Balla (2007). "The Influence of the Coriolis Force on Rivers and the Baer Law. Historical Review" ( ... erodes on its right bank due to the coriolis effect, while in an East-West section there is no preference. Baer was interested ... Baer was also a believer in a teleological force in nature which has been compared to a form of evolutionary orthogenesis. The ...
In addition, the very strong coriolis forces produced add to the separation efficiency. To reduce friction, the rotor spins in ... and various techniques are used to avoid forces causing destructive vibrations, including the use of flexible "bellows" to ... and weapons of mass destruction Pakistan and weapons of mass destruction Netherlands and weapons of mass destruction Forced ...
The Hudson discharge flows south along the coast due to the coriolis force. Further south are areas of oxygen depletion caused ...
Once the fluid begins to flow, however, the Coriolis force comes into play. This effect implies a relationship between the ... Coriolis meters can handle a wide range of flow rates and have the unique ability to output mass flow - this gives the highest ... Coriolis meters are used with liquids and gases. When the fluid within the displaced section is at rest, both the upstream and ... A coriolis meter is usually one or more pipes with longitudinally or axially displaced section(s) that are excited to vibrate ...
The thickness of this zone is determined by many factors including the Coriolis force. The zone is of interest to biologist, ... As the effects of anthropogenic forcing begin taking an even greater toll on marine processes, long-term studies are essential ...
The Coriolis force is usually too weak to initiate sufficient rotation near the equator. Storms frequently form in the warm ... The official record, therefore, could miss storms in which no ship experienced gale-force winds, recognized it as a tropical ...
As a result of the wind, the water is transported a net of 90 degrees from the direction of the wind due to Coriolis forces and ... Then, it is the Coriolis forces that dictate which way the water will move; in the Northern hemisphere, the water is ... Although there are no Coriolis forces present along the equator, upwelling still occurs just north and south of the equator. ... The three main drivers that work together to cause upwelling are wind, Coriolis effects, and Ekman transport. They operate ...
Fronts have a variety of causes, which involve ocean currents, wind, and coriolis forces. Some specific names for fronts exist ...
Increased westerly flow off the Rockies force the formation of a dry line when the flow aloft is strong,[68] while the Gulf of ... Supercells and tornadoes rotate cyclonically in numerical simulations even when the Coriolis effect is neglected.[37][38] Low- ... The climate-tornado link is confounded by the forces affecting larger patterns and by the local, nuanced nature of tornadoes. ... forcing drier air at mid-levels of the troposphere due to downsloped winds, and causing the formation of a low pressure area ...
... the Coriolis-Stokes force is a forcing of the mean flow in a rotating fluid due to interaction of the Coriolis effect and wave- ... This force acts on water independently of the wind stress. This force is named after Gaspard-Gustave Coriolis and George ... The Coriolis-Stokes forcing on the mean circulation in an Eulerian reference frame was first given by Hasselmann (1970): ρ f × ... the Coriolis-Stokes forcing is perpendicular to the wave propagation direction (i.e. in the direction parallel to the wave ...
... one of which foresaw an effect that physicists today attribute to the Coriolis force. Galileo Galilei (1564-1642), Isaac Newton ... Philips Lansbergen Simon Marius Ferdinand Reich Copernican theory Tychonic theory diurnal rotation of the earth Coriolis force ...
... Xuanen Kan and Bo Zhao ... Xuanen Kan and Bo Zhao, "Vibration Characteristics of a Mistuned Bladed Disk considering the Effect of Coriolis Forces," Shock ...
... we have to consider coriolis force due to earths rotation and we know that coriolis force varies with latitude. In the book ( ... I Consider Coriolis force or not? Dec 1, 2016. I Angular momentum is conserved, but KE is not. How to find out why? Aug 21, ... The total coriolis force related to the total movement doesnt depend on the latitude. ... Ive been wonder something about coriolis force.. Well... when we consider motion of projectile on earth, ...
"Visualisation studies of the transition regime flow in a channel of varying cross section under the influence of Coriolis force ... This paper is a flow visualisation study of the effect of Coriolis force on the flow in the transition regime in a channel with ... Visualisation studies of the transition regime flow in a channel of varying cross section under the influence of Coriolis force ... Visualisation studies of the transition regime flow in a channel of varying cross section under the influence of Coriolis force ...
Coriolis force. Coriolis force, apparent curvature of the path of a moving object due to the rotation of the earth. ... Corps, unit of a military force, usually a tactical division consisting of 2 or more subdivisions. ...
Coriolis Force. The apparent tendency of a freely moving particle to swing to one side when its motion is referred to a set of ... One of the few forces that can break up CFC molecules is ultraviolet radiation, however the ozone layer protects the CFCs from ...
the rotation of the earth the Coriolis Force * shorelines of continental masses Tapping the Current for Energy: * Gulf ...
Split Type Coriolis Force Mass Flow Sensor Meter FOB Price: US $ 2200 / Piece. Min. Order: 1 Piece ...
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Coriolis Force Liquid Mass Flow Meter for Oil Metering Skid FOB Price: US $ 200-5000 / Piece. Min. Order: 2 Pieces ... Coriolis Mass Flow Meter for Chemical Liquid / Gas Dosing System FOB Price: US $ 200-5000 / Piece. Min. Order: 2 Pieces ... Multi-Phase Coriolis Liquid / Gas Mass Flowmeter for Diesel Fuel Oil FOB Price: US $ 200-5000 / Piece. Min. Order: 2 Pieces ... Coriolis Mass Liquid Flow Meter for Bauxite Ore Pulp Slurry FOB Price: US $ 200-5000 / Piece. Min. Order: 2 Pieces ...
h) Mass flowmeter (Coriolis force).. Flow measurement methods other than positive-displacement flowmeters rely on forces ... Coriolis flowmeters[edit]. Using the Coriolis effect that causes a laterally vibrating tube to distort, a direct measurement of ... A Lorentz force velocimetry system is called Lorentz force flowmeter (LFF). An LFF measures the integrated or bulk Lorentz ... Electromagnetic, ultrasonic and Coriolis flowmeters[edit]. A magnetic flowmeter at the Tetleys Brewery in Leeds, West ...
21.3 Coriolis Force 895. 21.4 Geostrophic Windspeed 897. 21.4.1 Buys Ballots Law 899 ... 23.7 Simplified Dynamic Description of Climate Forcing and Response 951. 23.7.1 Response to a Perturbation of Earths Radiative ... New chapter on Global Climate providing a self-contained treatment of climate forcing, feedbacks, and climate sensitivity ... 9.4 Motion of an Aerosol Particle in an External Force Field 376 ... 23.4.5 Summary of IPCC (2013) Estimated Forcing 947. 23.4.6 The ...
Coriolis force. As dense matter settles toward the core it will carry angular momentum along. This implies that the magnetic ...
Force Constants, Generalised Mean Square Amplitudes and Coriolis Coupling Coefficients of P2I4. Venkateswarlu, K. / ... Potential Constants, Mean Amplitudes of Vibration, Shrinkage Constants and Coriolis Coupling Coefficients of Monohalo ...
The Coriolis force: All free-moving objects and fluids on Earth are subject to this force. In the Northern Hemisphere, winds ... Instead, the Coriolis effect forces these airflows to take an easterly or westerly direction. This breaks the hemispheric ... This force is weakest at the poles and strongest near the equator. How does this affect our model of a nonrotating Earth? It ... Pressure-gradient force: While the equator and the poles represent major areas of air pressure differences, the planet is ...
BENZENE; CORIOLIS FORCE; ANHARMONICITY; TWO-PHOTON SPECTRA; LEVEL CROSSING; EXCITED STATES; VIBRATIONAL STATES. ... Coriolis plus cubic-cubic anharmonic interactions between vibrational modes.Playing less of a role are Coriolis terms in which ... Helman, Adam and Marcus, R. A. (1991) Theory of anharmonically modified Coriolis coupling in the S1 state of benzene and ... Theory of anharmonically modified Coriolis coupling in the S1 state of benzene and relation to experiment ...
The exact expression of the Coriolis force is a bit more complex than the product of the Coriolis parameter and parcels ... is the Coriolis force per unit mass (the sign ambiguity depends on the mutual orientation of the force vector and n). In the ... the Coriolis force is always inward (and positive), and the pressure force outward (and negative) irrespective of the ... Coriolis force. This action, due to the Earths rotation, tends to displace any body travelling in the northern (southern) ...
6.2.1 The Coriolis force 253. 6.3 The flow of ideal fluids 256. 6.3.1 The continuity equation 257. 6.3.2 Bernoullis equation ... 2.2 Nuclear forces and energies 35. 2.2.1 Characteristics of the nuclear force 35. 2.2.2 Nuclear energies 36. 2.2.3 Quantum ...
Coriolis force F. C. , buoyancy (Archimedian) forces F. A. , Lorentz force F. L. , inertial force F. I. , viscous force F. V. ... are of the same order as the uncompensated Coriolis force ,. F. C. +. F. P. ,. , not necessarily the total Coriolis force. ... In typical geodynamo models, viscous and inertial forces are not much smaller than the Coriolis force, and the Lorentz force ... We note that, in our simulations the Lorentz force is substantially smaller than the Coriolis force or the pressure force ( ...
Can Coriolis Force affect the path of a football?. February 7, 2017. ...
... there is no reference to the relationship between Coriolis force (due to earths rotation) effects on troposphere general ... devoted to monsoons worldwide and despite the fact that everyone agrees with physical law which shows that Coriolis force acts ... Seasonal Reversal of the Prevailing Surface Winds; Coriolis Force; Earths Rotation; ITCZ (Inter-Tropical Convergence Zone) ... there is no reference to the relationship between Coriolis force (due to earths rotation) effects on troposphere general ...
Density Meter Principle: Coriolis Force. *Test Density: Light. * Xian Tosilon Automation Co., Ltd. ...
The local horizontal direction of the Coriolis force is thus Ω sin ⁡ φ {\displaystyle \Omega \sin \varphi } . This force acts ... The Coriolis frequency ƒ, also called the Coriolis parameter or Coriolis coefficient, is equal to twice the rotation rate Ω of ... earths rotation is small since only a small fraction of the centripetal force on the body is canceled by the Coriolis force. ... The Coriolis force (proportional to 2 Ω × v {\displaystyle 2\,{\boldsymbol {\Omega \times v}}} ), however, is perpendicular to ...
... Gradient Force * Coriolis Force. * Geostrophic Wind. * Friction and Boundary Layer Wind. * Centrifugal Force and ... Coriolis force dependent on two factors: 1. Latitude - Increases poleward; Coriolis force greatest at poles, zero at equator. a ... I. Air exerts a force on surface of objects. A. Air pressure is force per unit area. B. It is cumulative force of a multitude ... this were the only force acting on the air.. II. Coriolis Force (CF) - Occurs because of rotation of earth. A. Any moving ...
  • When we consider the motion determined by the forces selected next, we will have clues of which type of trajectory fits the particular balance of forces. (wikipedia.org)
  • This is a force always opposing the forward motion, whereby the vector invariably acts in the negative direction s with an effect to reduce the speed. (wikipedia.org)
  • Such determination, he says, can be accomplished by observing the causes of motion (that is, forces) and not simply the apparent motions of bodies relative to one another (as in the bucket argument). (wikipedia.org)
  • For instance, a physical problem with spherical symmetry defined in R3 (for example, motion of particles under the influence of central forces) is usually easier to solve in spherical polar coordinates than in Cartesian coordinates. (wikipedia.org)
  • Early scientific ideas about centrifugal force were based upon intuitive perception, and circular motion was considered somehow more "natural" than straight-line motion. (wikipedia.org)
  • Newton objected to Leibniz's equation on the grounds that it allowed for the centrifugal force to have a different value from the centripetal force, arguing on the basis of his third law of motion, that the centrifugal force and the centripetal force must constitute an equal and opposite action-reaction pair. (wikipedia.org)
  • In this however, Newton was mistaken, as the reactive centrifugal force which is required by the third law of motion is a completely separate concept from the centrifugal force of Leibniz's equation. (wikipedia.org)
  • It has been suggested that the idea of circular motion as caused by a single force was introduced to Newton by Robert Hooke. (wikipedia.org)
  • Bernoulli, in seeking to describe the motion of an object relative to an arbitrary point, showed that the magnitude of the centrifugal force depended on which arbitrary point was chosen to measure circular motion about. (wikipedia.org)
  • Lorentz and Coriolis forces) on the reversibility of motion. (hindawi.com)
  • As stated by Iro: Such an additional force due to nonuniform relative motion of two reference frames is called a pseudo-force. (wikipedia.org)
  • The fictitious force on an object arises as an imaginary influence, when the frame of reference used to describe the object's motion is accelerating compared to a non-accelerating frame. (wikipedia.org)
  • absolute motion of the reference system, where so-called fictitious forces, such as inertial forces or those of Coriolis, are concerned. (wikipedia.org)
  • In physics, a force is any interaction that, when unopposed, will change the motion of an object. (wikipedia.org)
  • In part this was due to an incomplete understanding of the sometimes non-obvious force of friction, and a consequently inadequate view of the nature of natural motion. (wikipedia.org)
  • A fundamental error was the belief that a force is required to maintain motion, even at a constant velocity. (wikipedia.org)
  • Most of the previous misunderstandings about motion and force were eventually corrected by Galileo Galilei and Sir Isaac Newton. (wikipedia.org)
  • He distinguished between the innate tendency of objects to find their "natural place" (e.g., for heavy bodies to fall), which led to "natural motion", and unnatural or forced motion, which required continued application of a force. (wikipedia.org)
  • Estimating the magnitude of each term in the diurnally averaged equation of motion for about 3.3 nautical miles (6.1 km), we found that the orders of the inertia term and the gradient of tidal stress were 10 −4 cm s −2 , and the order of the Coriolis force was 10 −3 cm s −2 . (springer.com)
  • Motion relative to a rotating frame results in another fictitious force: the Coriolis force. (wikipedia.org)
  • If a car is traveling at a constant speed along a straight road, then a passenger inside is not accelerating and, according to Newton's second law of motion, the net force acting on him is therefore zero (all forces acting on him cancel each other out). (wikipedia.org)
  • In an inertial frame of reference, were it not for this net force acting on the stone, the stone would travel in a straight line, according to Newton's first law of motion. (wikipedia.org)
  • This process begins with the collision of dust due to Brownian motion producing larger aggregates held together by van der Waals forces. (wikipedia.org)
  • See centrifugal force, two-body problem, orbit and Kepler's laws of planetary motion. (wikipedia.org)
  • This article is focused more on the kinematical issues surrounding planar motion, that is, determination of the forces necessary to result in a certain trajectory given the particle trajectory. (wikipedia.org)
  • General results presented in fictitious forces here are applied to observations of a moving particle as seen from several specific non-inertial frames, for example, a local frame (one tied to the moving particle so it appears stationary), and a co-rotating frame (one with an arbitrarily located but fixed axis and a rate of rotation that makes the particle appear to have only radial motion and zero azimuthal motion). (wikipedia.org)
  • V. I. Arnol'd: Mathematical Methods of Classical Mechanics Second Edition, p. 129 A slightly different tack on the subject is provided by Iro: An additional force due to nonuniform relative motion of two reference frames is called a pseudo-force. (wikipedia.org)
  • To explain the motion of bodies entirely within the viewpoint of non-inertial reference frames, fictitious forces (also called inertial forces, pseudo-forces and d'Alembert forces) must be introduced to account for the observed motion, such as the Coriolis force or the centrifugal force, as derived from the acceleration of the non-inertial frame. (wikipedia.org)
  • This can be achieved by introducing fictitious (or "non-existent") forces which enable us to apply Newton's Laws of Motion in the same way as in an inertial frame. (wikipedia.org)
  • In that case, prediction of the measured tension in the string based upon the motion of the spheres as observed from a rotating reference frame requires the rotating observers to introduce a fictitious centrifugal force. (wikipedia.org)
  • In this connection, it may be noted that a change in coordinate system, for example, from Cartesian to polar, if implemented without any change in relative motion, does not cause the appearance of fictitious forces, despite the fact that the form of the laws of motion varies from one type of curvilinear coordinate system to another. (wikipedia.org)
  • Those dynamics are modified by the force of the pressure gradient and that motion is modified by the Coriolis force. (wikipedia.org)
  • More complicated than tension on a string, the Coriolis force acts at a 90° angle to the direction of motion, and its strength depends on the rotation rate of the fluid. (wikipedia.org)
  • However, because the acceleration following the motion, which is given in (1) as the difference between the Coriolis force and the pressure gradient force, depends on the departure of the actual wind from the geostrophic wind, it is not permissible to simply replace the velocity by its geostrophic velocity in the Coriolis term. (wikipedia.org)
  • Classical mechanics is concerned with the set of physical laws describing the motion of bodies under the influence of a system of forces. (wikipedia.org)
  • The motion of a point particle is characterized by a small number of parameters: its position, mass, and the forces applied to it. (wikipedia.org)
  • The vertical motion forces periodic changes in speed and direction of the air within this air current. (wikipedia.org)
  • As the flow is now somewhat right of the wind, the Coriolis force perpendicular to the flow's motion is now partly directed against the wind. (wikipedia.org)
  • This surface current drags on the water layer below it, applying a force in its own direction of motion to that layer, repeating the process whereby that layer eventually becomes a steady current even further to the right of the wind, and so on for deeper layers of water, resulting in a continuous rotation (or spiraling) of current direction with changing depth. (wikipedia.org)
  • Ekman transport, part of Ekman motion theory first investigated in 1902 by Vagn Walfrid Ekman, refers to the wind-driven net transport of the surface layer of a fluid that, due to the coriolis effect, occurs at 90° to the direction of the surface wind. (wikipedia.org)
  • Though the following theory technically applies to the idealized situation involving only wind forces, Ekman motion describes the wind-driven portion of circulation seen in the surface layer. (wikipedia.org)
  • Diverging winds aloft ahead of these troughs cause atmospheric lift within the troposphere below, which lowers surface pressures as upward motion partially counteracts the force of gravity. (wikipedia.org)
  • upward motion is not produced because of warm air "ramping up" cold, dense air, rather, frontogenetical circulation is behind the upward forcing. (wikipedia.org)
  • If a bucket is filled with water, and made to rotate, initially the water remains still, but then, gradually, the walls of the vessel communicate their motion to the water, making it curve and climb up the borders of the bucket, because of the centrifugal forces produced by the rotation. (wikipedia.org)
  • One of the few forces that can break up CFC molecules is ultraviolet radiation, however the ozone layer protects the CFCs from ultraviolet radiation in the lower atmosphere. (nasa.gov)
  • For example, cooler air temperatures at a higher altitude (e.g., at the 500 hPa level, or 5.9 km) can lead to tropical cyclogenesis at lower water temperatures, as a certain lapse rate is required to force the atmosphere to be unstable enough for convection. (wikipedia.org)
  • It is frequently used in describing geophysical phenomena in the oceans and atmosphere in order to characterise the ratio of viscous forces to the Coriolis forces arising from planetary rotation. (wikipedia.org)
  • While Newton explained the tides by describing the tide-generating forces and Bernoulli gave a description of the static reaction of the waters on Earth to the tidal potential, the dynamic theory of tides, developed by Pierre-Simon Laplace in 1775, describes the ocean's real reaction to tidal forces. (wikipedia.org)
  • Tidal forces affect the entire earth, but the movement of solid Earth occurs by mere centimeters. (wikipedia.org)
  • It is different from the Roche limit which is the distance at which an object held together only by gravity begins to break up due to tidal forces. (wikipedia.org)
  • In general relativity, in any region small enough for the curvature of spacetime and tidal forces to be negligible, one can find a set of inertial frames that approximately describe that region. (wikipedia.org)
  • Tidal forces (gravity and centrifugal force) would naturally pull the cables directly towards and directly away from the Earth and keep the elevator balanced around geostationary orbit. (wikipedia.org)
  • Countourites are produced by thermohaline-induced deepwater bottom currents and may be influenced by wind or tidal forces. (wikipedia.org)
  • It is customary to assume that both bodies are point-like, so that tidal forces and the specifics of their material composition can be neglected. (wikipedia.org)
  • All free-moving objects and fluids on Earth are subject to this force. (howstuffworks.com)
  • By examining the balance of forces involved, the scientists then developed a new concept of an intrinsic contact angle, which arises from the characteristics of the fluids and the membrane. (phys.org)
  • Analysis of the characteristics of forces ultimately culminated in the work of Archimedes who was especially famous for formulating a treatment of buoyant forces inherent in fluids. (wikipedia.org)
  • to take advantage of noninertial pumping for lab-on-a-chip devices using noninertial valves and switches under centrifugal force and Coriolis effect to distribute fluids about the disks. (wikipedia.org)
  • The term has sometimes also been used for the reactive centrifugal force that is a reaction to a centripetal force. (wikipedia.org)
  • In order to keep the stone moving in a circular path, a centripetal force, in this case provided by the string, must be continuously applied to the stone. (wikipedia.org)
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