搜索结果: 1-15 共查到“电磁学 high Z”相关记录17条 . 查询时间(0.265 秒)
Worst cases for an one-hop high frequency link
ionosphere radio propagation worst cases ray-tracing
2015/9/25
The characterisation of a HF channel by means of monthly electron density profiles can be complemented with a detailed study of radio propagation «worst cases» on situations with extremes co...
Hierarchical Multiple Bit Clusters and Patterned Media Enabled by Novel Nanofabrication Techniques - High Resolution Electron Beam Lithography and Block Polymer Self Assembly
Diblock copolymer E-beam lithography Magnetism Multiple state cluster Nanofabrication Self assembly
2014/11/20
This thesis discusses the full scope of a project exploring the physics of hierarchical clusters of interacting nanomagnets. These clusters may be relevant for novel applications such as multilevel da...
Proton magnetic resonance spectroscopy reveals increased hepatic lipid content after a single high-fat meal with no additional modulation by added protein
H-MRS IHL IMCL postprandial protein
2018/12/20
Background: Fat accumulation in nonadipose tissue is linked to insulin resistance and metabolic diseases. Earlier studies have shown that hepatic lipid accumulation can occur after 4 d of a high-fat d...
The coercivity of amorphous rate earth-transition metal magneto-option (MO) recording media has been measured as a function of position on the films utilizing a micro-Kerrhysteresis-loop-tracer with a...
Low cogging torque and high efficient 3-phase spindle motors by reshaping magnetic circuit profiles
2011/11/29
The dynamic characteristics of a 3-phase spindle motor with 12-poles and 9-slots can be improved by reshaping the magnetic circuit profiles. The stator cores were designed with different ratios of x/y...
High Magnetization Exchange-Couple Double-Layer TbFeCo for Magnetic Flux Reading Optical Recording
2011/11/29
High magnetization (Mr) and enhanced coercivity magneto-optical (MO) recording media TbFeCo (TFC) were investigated for hybrid magnetic flux reading/optical recording due to their large magnetic flux....
Magnetic properties and recording characteristics of high magnetization exchange coupled double-layer TbFeCo for magnetic flux reading optical recording
exchange-coupled double-layer magnetic flux reading optical recording recording bias field onset field therommagnetic writing Kobatashi model modified nucleation field model
2011/11/29
The magnetic properties and recording characterisitcs of exchange-coupled double-layer (ECDL) disks consisting of a transition metal-rich TbFeCo readout layer with high mangnetization and a recording ...
Recent ionospheric modification experiments with the 3.6 MW transmitter at the High Frequency Active Auroral Research Program (HAARP) facility in Alaska led to discovery of artificial ionization desc...
A High-resolution Scintillating Fiber Tracker With Silicon Photomultiplier Array Readout
High-resolution Scintillating Fiber Tracker Silicon Photomultiplier
2010/11/12
We present prototype modules for a tracking detector consisting of multiple layers of 0.25 mm diameter scintillating fibers that are read out by linear arrays of silicon photomultipliers. The module ...
Unprecedented High Long Term Frequency Stability with a Macroscopic Resonator Oscillator
Frequency Stability Resonator Oscillator
2010/11/16
This article reports on the long-term frequency stabilty characterisation of a new type of cryogenic sapphire oscillator using an autonomous pulse-tube cryocooler as its cold source. This new design e...
High order coherent control sequences of fat pulses
High order coherent control sequences fat pulses
2010/10/19
We analyze the performance of sequences of fat pulses of various lengths and shapes for dynamic
decoupling and we compare it with that of sequences of ideal, instantaneous pulses. The use of second o...
Single Crystal Sapphire at milli-Kelvin Temperatures: Observation of Electromagnetically Induced Thermal Bistability in High Q-factor Whispering Gallery Modes
Single Crystal Sapphire milli-Kelvin Temperatures: Observation of Electromagnetically Induced Thermal Bistability High Q-factor Whispering Gallery Modes
2010/10/21
Resonance modes in single crystal sapphire ( -Al2O3) exhibit extremely high electrical and me-
chanical Q-factors ( 109 at 4K), which are important characteristics for electromechanical ex-periments...
Effect of Carrier Concentration Dependant Mobility on the Performance of High Electron Mobility Transistors
High Electron Mobility Transistor diffusion part drain current
2010/4/15
The influence of the sheet carrier concentration dependence on mobility on the performance of High Electron Mobility Transistor (HEMT) structures is theoretically modeled. The model basically takes in...
The diamagnetism of biological tissues reduces the homogeneity of the magnetic field and may limit the number of samples in multi-sample gradient-recalled echo (GRE) experiments. This study aims to 1)...