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 16 of 16 for “"Cryogenics"”.
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Mise en valeur des caoutchoucs armés hors d’usage de grandes tailles
… par broyage cryogénique de l'entreprise RTI Cryogenics comme meilleure solution afin de valoriser le plus efficacement possible les caoutchoucs armés hors d'usages de grandes tailles. En effet, le procédé par broyage cryogénique produit un extrant de très haute qualité qui permet un réemploi …
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Dynamic nuclear polarization in biomolecular solid state NMR : methods and applications in peptides and membrane proteins
… incorporating millimeter-wave transmission; cryogenics and pneumatic control systems. We describe a 380 MHz DNP spectrometer incorporating a 250 GHz gyrotron oscillator and present the theory and operation of a 460 GHz gyrotron at the second harmonic of electron cyclotron resonance. We have …
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Rapid extraction of dissolved inorganic carbon from seawater and groundwater samples for radiocarbon dating
… quantifies and stores the extracted gas using cryogenics. The extracted carbon dioxide is further processed for stable and radiocarbon isotope analysis at the National Ocean Sciences Accelerator Mass Spectrometer Facility at the Woods Hole Oceanographic Institution. The REDICS system was tested …
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Development of and gas permeation study of homo and copolymers from the family of polyphenylene oxides
… to other gas separation processes such as cryogenics, adsorption and absorption, membrane separation competes primarily on the basis of overall economics and convenience, but not on the basis of product purity. For example, membranes have been used for offshore natural gas processing …
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Rapid extraction of dissolved inorganic carbon from seawater and groundwater samples for radiocarbon dating
… quantifies and stores the extracted gas using cryogenics. The extracted carbon dioxide is further processed for stable and radiocarbon isotope analysis at the National Ocean Sciences Accelerator Mass Spectrometer Facility at the Woods Hole Oceanographic Institution. The REDICS system was tested …
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Magnetic Images & A Novel Stable Ferro-Magnetic Suspension
… operating under ambient conditions without any cryogenics. The physical problem is to freely suspended an object, the proof mass (PM) in stable equilibrium under the combined actions of gravity and magnetic forces. Earshaws's theorem enunciated in 1842 prohibits such a possibility.</p> <p>After …
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Development and gas permeation study of flat asymmetric polyphenylene oxide membranes.
… to other gas separation processes such as cryogenics, adsorption and absorption, membrane separation for gases must compete primarily on the basis of overall economics and convenience. The use of membrane separation for natural gas processing would reduce the size and weight of the …
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Commissioning of the Adaptive Optics System NAOS-CONICA for the VLT : the way to First Light
… commissioning periods are presented. They cover cryogenics, mechanics, optics and detector characteristics of CONICA. A major achievement was the development and implementation of a technique for the calibration of static optical aberrations. Since the instrument is designed to achieve absolute …
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On the nature of SERS from plasmonic nanostructures
… background continuum. Using low-temperature cryogenics (down to 10 K) the SERS peak and background continuum intensity are shown to increase as the plasmonic metal damping reduces with temperature. Temperature dependent measurements of QD (resonance) SERS are shown to have strong wavelength …
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High field DNP and cryogenic MAS NMR : novel instrumentation and applications
… required the development of probe technology, cryogenics, gyrotrons, and microwave transmission lines. A novel DNP probe and cryogenic instrumentation permit extended operation at 85-90K and 10kHz MAS. Initial enhancements [epsilon]=-40 and further optimization of experimental conditions is …
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CRYOGENIC DETECTION OF SCINTILLATION LIGHT WITH LARGE AREA SIPM ARRAYS FOR NEXT GENERATION NEUTRINO AND DARK MATTER EXPERIMENTS
… a novel DC-DC boost converter working in cryogenics was designed. First, a proof-of-concept prototype was tested and characterized at liquid nitrogen temperature, then a full prototype integrated with the DUNE electronics was successfully realized. Scintillation light detection is also the …
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High-resolution high-frequency dynamic nuclear polarization for biomolecular solid state NMR
… describe in detail advancements in probe, cryogenics, and gyrotron technology required to perform DNP MAS experiments, as well as the gains in sensitivity and resolution such instrumentation has permitted. Of particular importance is the development of a cryogenic sample ejection system …
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Measurement limits and performance analysis of multilayer insulation under vacuum and cryogenic temperatures using a modified calorimeter-bar setup
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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DEVELOPMENT AND VALIDATION OF AN ANALYTICAL CHARGE-HOLD-VENT MODEL FOR CRYOGENIC TANK CHILLDOWN
A transient Charge-Hold-Vent (CHV) analytical model has been developed and validatedwith hydrogen experimental CHV data. The model was found to be within 7% agreementof the data. The model simulates natural convection and jet impingement heat transferinteractions using quasi-unsteady steps in time …
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Design and demonstration of a motional narrowing method to measure a low temperature 3He diffusion coefficient for a superfluid neutron electric dipole moment experiment
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms