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7.2: Magnets, Electromagnets and Magnetic Matter

Ferromagnets. Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ferrum.A group of materials made from the alloys of the rare earth elements are also used as strong and permanent magnets; a popular one is neodymium.

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Paleoclimatic significance of the mineral magnetic record of …

QUATERNARY RESEARCH 37, 155-170 (1992) Paleoclirnatic Significance of the Mineral Magnetic Record of the Chinese Loess and Paleosols BARBARA A. MAHER* AND ROY THOMPSONt *School of Environmental Sciences, University of East Anglia, Norwich; and tDepartment of Geology and Geophysics, University of Edinburgh, United Kingdom …

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Cobb Angle

4 Significance. 4.1 A Cobb Angle of 10 degrees; 4.2 Between 15 and 20 degrees: 4.3 Between 20 and 40 degrees: 4.4 40 – 50 degrees or more: 5 Epidemiology [4] 6 Limitations; 7 References; Definition [edit | edit source] The Cobb Angle is used as a standard measurement to determine and track the progression of scoliosis. Dr John Cobb …

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Incidence and significance of magnetic iron sulphides in …

3 Palaeomonsoons I: the magnetic record of palaeoclimate in the terrestrial loess and palaeosol sequences; 4 Palaeomonsoons II: magnetic records of aeolian dust in Quaternary sediments of the Indian Ocean; 5 Bacterial magnetite and the Quaternary record; 6 Incidence and significance of magnetic iron sulphides in Quaternary …

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Importance of Magnets

Magnets are helpful in many ways. They can be used around the house, in clothing or commercially. Some uses for magnets, either utilized in manufacturing or daily usage, include refrigerator magnets, pain relief, name-tag magnets, button or snap replacements, key chain magnet, dart boards and other games, wrecking cranes in …

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Assessing the performance of a novel pneumatic magnetic separator for

Specifically, Kelsey et al. (2018) highlighted the significance of simplified dry processing flowsheets for magnetite ores using a novel superfine crusher and a planar magnetic separator which offer low-cost dry processing alternative to conventional wet milling and wet magnetic separation. ... Dry Magnetic Cobbing Separation; E. …

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6 Magnetic Separation

(i) Wet magnetic drum-type separators are used to concentrate fine, strongly magnetic materials and there are three basic types. These different models are required to treat 0.635 cm [( -) 0.25 in.] feed in a cobbing (coarse roughing) operation, to do a roughing operation on (-) 10 mesh (0.170 cm-0.065 in.)

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Has the Mfecane a Future? A Response to the Cobbing …

As Cobbing has maintained that it was this publication (together with the chapter on the topic in M.H. Wilson and L.M. Thompson (eds), The Oxford History of South Africa, vol 1, (Oxford, 1969)) which gave the term common currency (eg Julian Cobbing, 'The Case against the Mfecane' unpublished seminar paper, University of

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Significance of Cattaneo-Christov double diffusion and induced magnetic

The present study delves into the significance of Cattaneo-Christov double diffusion and the induced magnetic field (IMF) on a stagnation-point flow of Maxwell ternary nanofluids. A new boundary condition with the magnetic response is designed to study superior heat and mass transfer of Maxwell ternary nanofluid combined with double …

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Cobbing Dogs: What Does It Mean When A Dog …

The most common reason for corn cobbing in adult dogs is to show affection. Ultimately, nibbling behavior is a form of grooming or a dog's way of giving a gentle scratch. When dogs show affection, they …

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The Significance of Microstructure and Texture on Magnetic …

In this regard, the significance of microstruc... Skip to Article Content; Skip to Article Information; Search within. Search term. Advanced Search Citation Search. Search term. Advanced ... The magnetic induction of nonoriented silicon steel produced by strip casting is intriguingly 0.06 T higher and the core loss is 0.4 W kg −1 lower than ...

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Cobbing Dogs: What It Means & Why Dogs Do It!

Dogs may use cobbing as a way to calm their nerves when they are stressed or anxious.. If a habit forms, a dog's nibbling can cause an injury or infection.Dogs can nibble themselves or another dog until …

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Significance of nuclear magnetic resonance combined with …

Purpose: To investigate the significance of nuclear magnetic resonance (NMR) combined with Ki-67 and vascular endothelial growth factor (VEGF) detection in the diagnosis and prognosis evaluation of brain glioma. Methods: 78 patients with brain glioma treated at the Affiliated Hospital of Jining Medical University from January 2015 to August 2017 were …

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21.1: Magnetism and Magnetic Fields

Ampere's Law. A more fundamental law than the Biot-Savart law is Ampere's Law, which relates magnetic field and current in a general way. In SI units, the integral form of the original Ampere's circuital law is a …

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Understanding Cobbing Dogs: Affection, Play, or …

When They're In a Playful Mood. Cobbing at you might be a message of "come and play with me". Play is an important part of a dog's life, whether they're puppies or fully grown. It's also an important part of …

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Evaluation of Dry Cobbing

Magnetic cobbing tests on minus 3/4-inch material have always been shown to have a beneficial effect on downstream processing. In-plant dry cobbing tests have indicated a 5% increase in plant throughput with comparable iron recovery. Use of dry cobbing at even …

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Characteristics and paleoclimatic significance of magnetic

(2) According to the pattern of change of magnetic susceptibility and stable organic carbon isotopes, the sequence of climate change from 30 kaB.P. can be divided into 3 main stages: the age of ...

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MAGNETIC BELT COBBING TECHNO·LOGY FOR …

magnetic belt cobbing techno·logy for upgrading coarse taconite ore: u.s. bureau of mines legislative ref"trltnc[ ua~ar' 645 state oh:ce f3ultrl'id saint paul, f·jiitine&r'ail 991@§ twin …

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Significance of magnetic resonance imaging in apical

Significance of magnetic resonance imaging in apical hypertrophic cardiomyopathy Am J Cardiol. 2010 Jun 1 ;105(11 ... (69%), while in 4 patients echocardiographic results were normal or inconclusive. Magnetic resonance imaging showed a spadelike morphology of the left ventricle in 6 patients and identified an apical …

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Process simulations in mineralogy-based …

The feed to the plant is the product of crushing and cobbing plant. The beneficiation process comprises closed circuit autogenous grinding followed by primary magnetic separation and pebble milling …

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Explain the importance of the radial magnetic field inside …

The main importance of using radial, magnetic field is that maximum torque is obtained and torque is uniform in all the positions of the moving coil galvanometer. The angle between the plane of the coil and magnetic field is zero in every position of coil. As the radial magnetic field is parallel to the coil and provides constant torque, this ...

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Deciphering Nibbling or Cobbing Behavior in …

Nibbling or cobbing behavior in dogs is a complex phenomenon influenced by various factors, including herding instincts, boredom, anxiety, and compulsive tendencies. While occasional nibbling …

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Gauss Law : Significance, Formula, Theory, Examples & Uses

The magnet will not be observed as half to separate the south and the north poles. The other approach is that in the view of magnetic fields, it seems to be simple to observe that the total magnetic flux which passes through the enclosed (Gaussian) surface is null. The thing that moves internally to the surface needs to become out.

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EVALUATION OF DRY COBBING -LTV

Coarse magnetic cobbing of the crushed ore has shown the advantages of rejecting a portion of low grade ore so that the energy consumption on the down stream grinding could be reduced. With the magnetic iron recovery to the concentrate at 98%, there is an optimum size, at minus 1-inch, which achieved the rejection of 14% by weight ...

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Characteristics of Atmospheric Dustfall and Soil …

Xining City, and discusses the environmental significance indicated by the magnetic susceptibility, so as to provide a valuable reference for the interpretation of the atmospheric environment. 2 Materials and Methods 2.1 Sample collection The atmospheric dust-full samples were collected from ...

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Paleoclimatic Significance of the Mineral Magnetic Record …

Microscopy identifies several distinct size and shape characteristics in the magnetic carriers. Lithogenic magnetites, intact and abraded, dominate the coarse-grained magnetic fraction. The smallest of the coarse grains is ∼ 2 μm. The remaining magnetic materal is ultrafine in size, with two types of magnetite particles present.

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KM C364e-202

Email: dian.olwagen@arrium IRON ORE CONFERENCE / PERTH, WA, 13-15 JULY 2015. J GERBER, C STANTON AND D OLWAGEN survey also found that a significant …

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Factors of 'magnetic importance'

This is a further example of the Court of Protection applying the 'magnetic importance' doctrine, when making decisions about best interests. The concept was first developed by Thorpe LJ in White v White [1999] Fam 304 and Crossley v Crossley [2007] EWCA Civ 1491, and has subsequently been endorsed by the Court of Protection in …

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Dry Magnetic Cobbing Separation

When fine-grained magnetite is the only mineral of value and there is a minimum of dilution rock and barren material in the ore, elimination of cobbing in the crushing plant in favor of wet rougher …

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Detection and significance of the characteristic magnetic …

Objective: We sought to determine the magnetic resonance imaging (MRI) characteristics of mandibular condyles in still-growing children. In addition, we also evaluated the significance of the double-contour-like structure and the conversion from red to yellow marrow characteristic of this age.

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