Materials Literature
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Shaping of light fields behind amplitude and phase masks the basis the lithographic structure reproduction. The aerial image or better the intensity distribution defines the resolution of the structure to be printed. Contrast is the main parameter and to achieve high contrast feature phase plays an important role. In…
1000 kV ultra-high voltage (UHV) power transformer plays an important role for HVAC transmission in China. The voltage-regulating transformer (VRT) is an independent part of the UHV power transformer and the exclusive differential protection is needed. The voltage regulation of VRT can range from 0 to 100% which takes…
In this study, to develop low temperature sintering capacitor composition ceramics with the good dielectric properties, (Ba0.86Ca0.14)(Ti0.85Zr0.12Sn0.03)O3 (BCTZ) ceramics were prepared by the conventional solid-state reaction method. The effects of B2O3 addition on the dielectric properties and microstructure was in…
A 0.35um HVCMOS Triple Level array drive ASIC protype has been designed and fabricated for the Smectic-A liquid crystal Electric paper displayer (EPD). The pulse switch matrix for the low-to-high voltage level shifter is employed not only for saving the die size and power supply but also for better controlling the out…
The possibility to use hot extraction (thermal extraction in a carrier-gas flow) for fractional analysis of nitrogen in carbon steels is shown for cord and reinforcing-bar steels. A rapid procedure is developed for an analysis of free nitrogen in carbon steels. The validity of the analytical procedure is confirmed by…
In dieser Arbeit werden einzelne plasmonische Nanostrukturen, welche nicht mit anderen Strukturen wechselwirken, und plasmonische Nanostrukturen, welche in Gittern mit Perioden von 300-700 nm angeordnet sind und kollektive Resonanzen aufweisen, behandelt. Es werden jeweils die Herstellung der Strukturen, die Ergebniss…
In this paper we propose a new approach to fiber-optic sensor head based on voltage-controlled ferroelectric liquid crystals (FLC). Using nano-grid electrodes, nanometer-scale photo-alignment layers and deformed helix ferroelectric liquid crystals with a sub-wavelength helix pitch of 150 nm, we have realized a fully i…
The microstructure and the static tensile stress–strain curve of a hot-rolled nitrogen-bearing austenitic–martensitic corrosion-resistant 27Kh15AN3MD2 steel have been studied. It is found that the curve has three straight line portions with different slopes at strains of 2–4.3% (portion I), 4.3–13.8% (portion II), and…
The effect of cobalt on the oxidation resistance of (Nd0.85Dy0.15)16.4(Fe0.89Co0.11)74.4Ti1.3B7.9 and (Pr0.56Dy0.39Sm0.05)14.5(Fe0.75Co0.25)78.8B6.7 alloys has been studied. The storage of magnet blanks made from these alloy in air for 200 h does not affect the magnetic properties of the sintered magnets owing to the…
University of Minnesota Ph.D. dissertation. July 2016. Major: Mechanical Engineering. Advisor: David Pui. 1 computer file (PDF); xii, 151 pages.
To meet the requirement of knitted fabric design and production using complicated jacquard circular knitting machine, an improved CAD/CAM system has been designed in this paper. The system has two subsystem, one named "pattern design subsystem" is for needle selectors control, and the other one named "action chain sub…
University of Minnesota Ph.D. dissertation. July 2016. Major: Mechanical Engineering. Advisor: William Northrop. 1 computer file (PDF); iv, 133 pages.
Cu90Zr10-x Al x (x=1, 3, 5, 7, 9; at.%) alloy rods were synthesized based on rapid solidification method. The structure, distribution of elements, mechanical properties and electrical conductivity of the Cu-based alloy samples were studied using X-ray diffraction (XRD), scanning electron microscope (SEM), electro-prob…
The present paper gives an overview (design, manufacture, characterisation and validation) of novel joining approaches for the integration of materials and hot-structures parts, which have been development in different collaborative European projects (FP7 project SMARTEES, HYDRA and very recently THOR). \n \nThe overa…
Amyloid (Aβ) pathology precedes clinical dementia by decades. So far it remains unclear to what extent genetic and environmental influences play a role in Aβ deposition. Studies in monozygotic twins are useful to estimate the upper-limit of genetic contribution to a disease. Earlier studies in twins have focused on co…
Substantial amount of Aβ accumulates in occipital cortices, however, its clinical implication have drawn less attention in many amyloid PET imaging studies. A total of 171 patients were clinically diagnosed as Alzheimer’s disease (AD) or amnestic mild cognitive impairment (aMCI) after completion of 3T MRI and neuropsy…
F-THK-5351 is a novel radiotracer demonstrating high binding selectivity and affinity for tau over amyloid pathology and better pharmacokinetics in the brain than previous THK probes. Our aim was to estimate the radiation dose of F-THK-5351 in human, and then compare the clinical radiation dosimetry results to estimat…
The transmembrane protein complex g-secretase is a key protease in regulated intramembrane processing (RIP) of a multitude of type 1 transmembrane proteins. g-Secretase has a pathological role in Alzheimer disease (AD) as it produces the neurotoxic amyloid β-peptide from the amyloid precursor protein (APP). Studies on…
Tau tangles outside the medial temporal lobe are thought to develop later in AD pathogenesis, after initial amyloid deposition. [F]AV-1451, which was developed to bind to tau tangles in vivo, allows this hypothesis and the relationship of other imaging biomarkers of AD (glucose hypometabolism with [F]FDG PET and hippo…
The catalytic effect of carbon nanotubes on epoxy polymer curing has been studied using the fractal method. The fractal dimension of epoxy microgels has been shown to be reduced by the interaction with the surface of carbon nanotubes. This effect is the only factor that contributes to the acceleration of epoxy crossli…