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ELECTRON SCATTERING RESISTIVITY OF METALS ppt


Posted by: seminar surveyer
Created at: Tuesday 04th of January 2011 04:09:15 AM
Last Edited Or Replied at :Tuesday 04th of January 2011 04:09:15 AM
seminar on resistivity of metals , electron scattering and metal resistivity ppt, electron scattering resistivity of metals pdf , electron scattering in metals, resistivity of metals , electron electron scattering in metals, electron scattering ppt , electron scattering metal resistance powerpoint,
s resistivity also decreases & vice versa but assume a constant value of temp. below 6 K.
In general, the resistivity of a perfect, pure single crystal of a metal approa..................[:=> Show Contents <=:]



SEASONAL INFLUENCES ON SAFETY OF SUBSTATION GROUNDING SYSTEMS full report


Posted by: computer science technology
Created at: Thursday 21st of January 2010 01:13:25 AM
Last Edited Or Replied at :Saturday 25th of February 2012 12:39:46 AM
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ayer changes from smaller than the burial depth of the grounding g to higher than the burial depth (right side of the vertical dot as shown in Fig.), the grounding resistance would decrease sharply.
INFLUENCE ON TOUCH VOLTAGE
The influence of the thickness of the low resistivity soil layer formed on the touch voltage is shown in figure below.

The maximum touch voltage on the ground surface in normal condition is 1481 V. When the thickness of the low-resistivity soi1 layer is smaller than the burial depth (left side of the vertical dot line as shown in Fig.) the touch voltage on the ..................[:=> Show Contents <=:]



Journal of Alloys and Compound JALCOM -


Posted by: seminar projects crazy
Created at: Saturday 13th of June 2009 03:43:16 PM
Last Edited Or Replied at :Saturday 13th of June 2009 03:43:16 PM
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fer to take place. But as more Zn is added
to the system, transfer will take place to Mn
2+
levels through
Zn
2+
levels formed near Mn
2+
levels. This is also observed in
DRS measurements as reduction in band gap is observed as
more Zn adds to the system. However, no red emission can be
detected from x = 0.5 sample indicating the complete replace-
ment of Mn
2+
at Zn
2+
sites in Zn
2
GeO
4
. Therefore, similar to the
Fig. 5. PL emission spectra (red) of Mg
1.96-1.96x
Zn
1.96x
GeO
4
(0 = x = 0.25),
?
exc
= 300 nm.
Fig. 6. Room temperature Photoluminescent emission..................[:=> Show Contents <=:]



SEMINAR REPORT On Giant Magnetoresistance Effect


Posted by: Computer Science Clay
Created at: Saturday 13th of June 2009 02:36:40 PM
Last Edited Or Replied at :Saturday 13th of June 2009 02:36:40 PM
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.9nm Chromium.
Fig 4 - R/R0 Vs Magnetic fieldPage 10

Giant Magnetoresistance Effect
Department of Computer Science CUSAT
10
TYPES OF GMR
MULTILAYER
Two or more ferromagnetic layers are separated by a very thin
(about 1 nm) non-ferromagnetic spacer (e.g. Fe/Cr/Fe). At certain thicknesses the RKKY
coupling between adjacent ferromagnetic layers becomes antiferromagnetic, making it
energetically preferable for the magnetizations of adjacent layers to align in anti-parallel.
The electrical resistance of the device is normally higher in the anti-parallel case and the
difference can..................[:=> Show Contents <=:]



ANALYSIS OF RESIDUAL STRESSES IN MAIN CRANKSHAFT BEARINGS AFTER INDUCTION SURFACE


Posted by: computer science crazy
Created at: Friday 17th of April 2009 07:52:50 AM
Last Edited Or Replied at :Friday 21st of December 2012 11:11:44 PM
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he transition width from compressive to tensile residual stress in the hardened surface layer.

(d ) the transition steepness from a compressive to a tensile residual stress profile.

(e) the depth with a transition microstructure.

The last phase in the manufacturing of crankshafts is finish grinding in order to achieve the desirable condition at the surface and in the surface layer, i.e.:

1. The grinding residual stresses must be compressive or lowest tensile so that the favourable residual stress profile obtained by induction surface hardening of the surface layer is maintained.

..................[:=> Show Contents <=:]



HIGH TEMPERATURE SUPER CONDUCTIVITY


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 01:28:20 PM
Last Edited Or Replied at :Friday 30th of January 2009 01:28:20 PM
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ctricity with near perfect efficiency and much higher capacity, besides all this it also has a wide range of application like MRI scanning, maglev trains etc. This seminars shall discuss on the concepts of superconductivity, its classifications, its various properties and its applications...................[:=> Show Contents <=:]



EXTRAORDINARY MAGNETO RESISTANCE


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 01:20:50 PM
Last Edited Or Replied at :Friday 30th of January 2009 01:20:50 PM
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somewhat solved out as new and advanced technologies are introduced to solve this problem. But the problem of read- write into these ultra high density storage disks at good speeds is a major problem. With the current technology which is available now, however large the storage capacity be, the amount of data which can be read or written into the disk has a limitation. This limit now a days is 13Gb/sq. inch. So the hard drive storage density has to be limited to that extent. The storage density cannot be increased even though the technology to do so is available because of the read head limit..................[:=> Show Contents <=:]



Tamper Resistance


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:38:04 PM
Last Edited Or Replied at :Sunday 21st of September 2008 11:38:04 PM
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tects digital assets in the embedded systems from most people and most attacks. Embedded systems pose unique security challenges because they are largely used in relationships where one party wants to put a secure, embedded device, in the hands of another, with the assurance that the second party cannot modify/hack the device. First, we outline the major attacks that threaten the security of an embedded system.

The vulnerability landscape of an embedded system is a vast expanse of attacks. A good understanding of the threats is necessary so that countermeasures can be devised to protect ag..................[:=> Show Contents <=:]



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