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.
Results
Showing 1 to 20 of 28 for “"Gravimetry"”.
-
GNSS kinematic position and velocity determination for airborne gravimetry
Das weltumspannende Satelliten-Navigationssystem GNSS spielt eine wichtige Rolle für die Fluggravimetrie. Gegenstand dieser Arbeit ist die Entwicklung zuverlässiger GNSS-Algorithmen und Software für die hochgenaue GNSS-Datenanalyse in der Fluggravimetrie. Ausgehend von den Anforderungen für …
-
Positioning in geophysics : applications to GPS seismology, airborne gravimetry, and the Dawn Spacecraft at Vesta
… techniques applied to seismology, airborne gravimetry and planetary gravity recovery. In Chapters 2 and 3, a smoothed ionospheric model computed using GPS phase observations was applied to seismology and airborne gravimetry. The seismic investigation observed the 2010 El Mayor-Cucapah …
-
High precision electrohydrodynamic printing of polymer onto microcantilever sensors
… was controlled using a positioning stage. Gravimetry analyzed the polymer droplets by examining the shift in microcantilever resonance frequency resulting from droplet deposition. The resonance shift of 50 - 4130 Hz corresponded to a polymer mass of 4.5 - 135 pg. The electrohydrodynamic …
-
Structures and thermal decompositions of pseudopolymorphs of sulfonamide drugs
… methods. Thermal Analysis involving Thermal Gravimetry (TG) and Differential Scanning Calorimetry (DSC) were used to investigate such thermal properties of the crystals as stabilities, desolvation processes and their kinetics as well as the melting of pure polymorphic forms of the drugs …
-
Structure and Dynamics of Layered Double Hydroxides
… were examined with NMR, XRD, TGA and water gravimetry under well-controlled relative humidity conditions or/and over a wide temperature range. The results show that LDHs have widely variable hydration, expansion, structural and dynamical behaviors that depend on the anion size, charge, and …
-
Sources of high temperature degradation of cement-based materials : nanoindentation and microporoelastic analysis
… literature, the traditional methods of thermo-gravimetry, uniaxial compression, and resonant frequency are used to measure mass loss, compressive strength and elastic modulus, respectively. However, microscopic measurement of the elastic modulus and hardness is the primary experimental focus of …
-
The Structure-Function Relationships in Laminated Barrier Films
… 100°C. The main technique used was permeation by gravimetry, and covered all permeants through all films studied. A structural study was carried out to determine the effect boiling in water had on the films. X-ray diffraction was used as a qualitative method backed up by density and differential …
-
The engineering geology and stability of the rapidly alternating limestone and mudrock sea cliffs of glamorgan
… toppling and vertical translation. <br/>Thermal gravimetry indicated allotropy of sulphide minerals. The least stable forms were identified in the more calcareous mudrocks, and a laboratory leaching experiment demonstrated that weatherability was greatest in such mudrocks. Pyrite oxidation was …
-
Polyoxometalates and Block Copolymers: Templated Self-Assembly for Nanomaterials Applications
… transformed infrared spectroscopy and thermal gravimetry were used to monitor the success of POMs incorporating into block co polymer networks. Dynamic light scattering and extensive atomic force microscopy were used to evaluate the quality of polymer templated structures. Finally, this thesis …
-
Analisis karakteristik stomata, kadar klorofil dan kandungan logam berat pada daun pohon pelindung jalan kawasan lumpur Porong Sidoarjo
… kandungan logam berat menggunakan metode gravimetry, data selanjutnya dianalisis dengan ANOVA dan dilanjutkan dengan uji lanjut BNT untuk mengetahui adanya perbedaan logam berat pada setiap lokasi dan varietas. Pengamatan ukuran stomata pada semua jenis tanaman yang diamati, baik permukaan …
-
Formation of authigenic minerals during microbial degradation in artificial marine media
… extent of degradation through loss on ignition gravimetry after 40 days of incubation. I also measured pH levels, dissolved Fe(II), and total Fe over a period of 60 days. Scanning electron microscopy and energy dispersive X-ray spectroscopy were used to identify mineralized organic particles and …
-
Physico-chemical Characteristics and Environmental Fate of a Hydrolytically Degradable Cationic Flocculant
… absorption. Extracts were analyzed by 1H-NMR, gravimetry, and ultraviolet-visible spectrophotometry. Both poly(PLA4ChMA) and naphthalene have elevated bioaccessibility (85.8 100%) in gastric and intestinal PBET solutions in the absence of kaolin and SMW components. In the presence of kaolin, …
-
Inclusion of Molybdenum into microporous and mesoporous materials
… performed by various techniques, including XRD, gravimetry, FTIR, Raman and XAS. Results show that MOCVD of Mo(CO)6 works best in Y zeolites in term of the amount of molybdenum retained after decomposition. The effect of different cations present on Y zeolite was not significant to the amount …
-
Moisture occurrence in roof assemblies containing moisture storing insulation and its impact on the durability of building envelope
… was monitored with electronic sensors and gravimetry. The test consisted of eight flat roof assemblies fully insulated with cellulose subjected to one complete, quasi real-time wetting-drying cycle. The research presents a methodology to evaluate the performance of retrofitting energy …
-
Spin-mixing and Interferometry in Microwave-dressed Sodium Spinor Bose-Einstein Condensates
… useful for quantum-enhanced inertial sensing and gravimetry with BECs.
-
Gravimetric, neutron scattering and computational studies of the sorption and diffusion of gases in zeolites
… longer timescales than for molecular dynamics. Gravimetry has been used to study the adsorption and desorption of water on Na zeolite Y in the temperature range 100-190°C. Significant hysteresis was observed in all cases, probably caused by the movement of cations away from their original …
-
Selectivity in host-guest compounds
… differential scanning calorimetry, and thermal gravimetry – the latter of which also confirmed the ratio of host to guest within compounds. The preference of a host for one guest over another was determined by exposing the host to mixtures of guests, waiting for crystals to form, and then …
-
Modification of a microbial co-polyester by graft copolymerisation
… grafting add-on, which was again confirmed by gravimetry and nmr. The extent of grafting was much greater via this technique when compared to mutual irradiation. Grafting add-on figures in excess of 200wt% were obtained with minimal production of homopolymer. The level of grafting was shown to …
-
Electrospun membranes for implantable glucose biosensors
… fibre diameter (SEM), porosity (bubble point and gravimetry methods), hydrophilicity (contact angle), solute diffusion (biodialyzer) and uniaxial mechanical properties (tensile tester) were used to characterize certain shortlisted electrospun membranes. Static and dynamic collector configurations …
Page 1 of 2