Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 577 for “"Modulators"”.
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Photodynamic Herbicide Modulators
… treated with ALA and chlorophyll biosynthesis modulators, did not accumulate the "wrong" type of tetrapyrrole species (MV or DV) that were likely to force the generation of free radicals as was observed in cucumber plants. (3) The primary leaves of soybean, a DMV/LDV plant species, treated with …
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Advanced silicon photonic modulators
… (MZ) silicon plasma dispersion effect modulators are explored. A rib waveguide reverse biased silicon diode modulator is designed, tested and found to operate at speeds up to 13 GHz with a V"L of 1.2 Vcm. MOS capacitor modulator designs are investigated as an alternative, but are not …
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Novel Electro-Optical Light Modulators
Made available in DSpace on 2014-12-08T22:23:42Z (GMT). No. of bitstreams: 1 6503686.pdf: 2566448 bytes, checksum: 994ad6539b11d31ffc368638c07e1641 (MD5) Previous issue date: 1964
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Development of ultra-broadband modulators
… structures, the fabrication of ultra-broadband modulators and the design of arrayed waveguide gratings are detailed in this work. Three distinct structures are presented along with a compatible fabrication procedure for the construction of discrete modulators. The work is culminated with a …
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Discovery and Design of NRF2 Modulators
Nuclear factor erythroid 2–related factor 2, or NRF2, is a key protein responsible for the regulation of numerous signaling pathways in the body, particularly those related to oxidative stress and cytokine release. As such, reduced NRF2 activity has been identified as a contributing factor of …
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Structural analysis of cytokine signaling modulators
<p>The N-linked glycans attached to cytokine receptors modulate signal transduction by interacting with galectin-3 and generating a cell surface lattice. This opposes constitutive endocytosis and reduces the thresholds for cytokine signaling. The preferred ligands for galectin-3 are the …
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Novel Modulators of Human Sperm Motility
Male factor is the underlying cause in 50% cases of infertility, and is most commonly characterised by asthenozoospermia (reduced sperm motility). Incredibly, there is currently no known treatment for this condition, and the only option is Artificial Reproduction Technology (ART) which is expensive …
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PORPHYRIN DERIVATIVES AS VERSATILE PROTEASOME MODULATORS
The ubiquitin proteasome system (UPS) is the primary degradation system in eukaryotic cells, with high selectivity for a myriad of soluble proteins, and perturbations in the UPS are associated with numerous human disorders. For this reason the proteasome has become a pharmacological target for …
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Novel Modulators of CD39 and CD73
… kinase inhibitors to identify novel modulators of CD39 and CD73, explore their mechanisms of action, investigate their binding sites via in-silico docking, and evaluate the ex-vivo activity of specific CD39 modulators. The malachite green assay was employed for in-vitro screening of …
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Vector modulators for analog-beamforming receivers
… attractive. Analog-beamformers use vector modulators (VMs) to phase-shift and scale the amplitudes of the signals from each antenna before signal combining. These VMs require accurate phase and gain control and high DR to achieve accurate beamforming and avoid corruption of the desired …
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Pulse-width and pulse-time modulators
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1947.
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P-N junction microwave phase modulators.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1972. M.S.
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Response linearization in electro-optic modulators
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Integration of broadband direct-conversion quadrature modulators
To increase spectral efficiency, transmitters usually send only one of the information carrying sidebands centered around a single radio-frequency carrier. The close-lying mirror, or image, sideband will be eliminated either by the filtering method or by the phasing method. Since filter Q-values …
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Electrooptic mach-zehnder modulators in gallium arsenide
External travelling-wave modulators, utilizing the electrooptic effect, are one class of devices currently being investigated for converting electrical signals to optical signals in applications involving high-speed data transmission. Modulators fabricated on semiconductor substrates, such as GaAs …
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Investigating neurodegenerative diseases with small molecule modulators
… method for identifying novel small molecule modulators of these disease phenotypes. Mechanistic studies of these modulators can reveal vital insights into the cellular pathways altered in these disease states, identifying new mechanisms leading to cellular dysfunction, as well as novel …
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Graphene Modulators for Silicon Photonic Optical Links
… encoded in light, relying on electro-optic modulators to convert the electrical data signal into the optical domain, and photodetectors to convert the optical signal back into the electrical domain. Power consumption can be reduced by using efficient and compact modulators and photodetectors …
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Testing and modeling of photo-electric modulators
… This thesis explores the physics of how these modulators operate. I built a general purpose optical and electrical testing station to perform these measurements. The optical transmission spectra of the set of modulators studied had extinction ratios in the range of 5 to 27 dB, which is …
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Millivolt silicon photonic modulators for cryogenic applications
… deals with the development of silicon photonic modulators operating at cryogenic temperatures and capable of modulating an optical carrier with millivol-level driving signals. We show cryogenic operation of CMOS photonic resonant modulators in the forward bias regime with high modulation …
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All-optical metamaterial modulators : fabrication, simulation and characterization
Artificially structured composite metamaterials consist of sub-wavelength sized structures that exhibit unusual electromagnetic properties not found in nature. Since the first experimental verification in 2000, metamaterials have drawn considerable attention because of their broad range of …
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