etd AT Indian Institute of Science: Recent submissions
Now showing items 521-540 of 9462
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Probabilistic site characterization and reliability analysis of shallow foundations and slopes
Uncertainty is pervasive in almost every field of engineering, and geotechnical engineering is no exception. Natural soils are heterogeneous and anisotropic in physical properties due to their composition and complex ... -
Vibration of cables under determministic and randon excitations.
Conclusions i) A new method of linear analysis has been developed to handle the non planar free vibration behaviour of cables in the presence of a spatially non uniform lateral load. ii) If the lateral load, even though ... -
Effect of reinforcement parameters on the mechanical behaviour of geosynthetic reinforced sand
Soil possesses very high strength in compression, but virtually no strength in tension. Hence, when used as a construction material in civil engineering applications, soil usually fails in shear. Soil can be reinforced ... -
Bentonite-Kaolinite-sand mixtures as backfill material for nuclear fuel waste disposal vault.
The aim of the present investigation is to find a suitable backfill material to be used in a nuclear fuel waste–disposal vault. The requirements for such backfill material with regard to various characteristics-such as ... -
Ultimate strength and behaviour of reinforced concrete T-beams under combined bending and torsion, Ph.D. Thesis
Summary and Conclusions The various conclusions arrived at in this study are summarized as follows: 1. Equilibrium Method The equilibrium method used in this investigation for the analysis of T beams under combined bending ... -
Stability of slopes and passive earth structures in partially saturated soils by the method of characteristics.
Stability analysis of slopes and passive earth pressures are problems of considerable economic importance and technical interest in geotechnical engineering. Efforts have continuously been made to improve the methods of ... -
Performance analysis and improvent of submersible pumps
The prediction of performance and efficiency of turbomachines based on test results with geometrically similar physical models using scale effect formulae has been done for the past several decades. Now, with the introduction ... -
In-Situ testing of soils and pavement systems using spectralanalysis of surface waves(SASW)
The determination of shear wave velocity profile with depth for any ground or pavement site is essential for: (i) performing earthquake resistant analysis, (ii) carrying out soil liquefaction studies, and (iii) assessing ... -
Some studies on volume change and strength behaviour of soils as affected by environmental factors
The present investigation is an attempt to understand clay–organic pore fluid interactions, to check in the first place whether highly ligative organic molecules result in clay behaviours similar to those produced by weakly ... -
Axisymmetric problems on capacity and passive earth pressures in soils with bilinear ground surface by the method of characteristics.
Shallow footings are placed on different types of soil under different site conditions. A shallow footing placed in a depression with stratified soil is a good example of a practical problem. For a realistic analysis of ... -
Studies on slurry reactors
Bubble column slurry reactors (BCSRs) are used for three phase contacting in petroleum, petrochemical, and chemical industries and in pollution control. The main objectives of the present work are: to analyse and evaluate ... -
Selective ion exchangers crosslinked poly (4-vinyl pyridine) with transition metal ion
Chelating resins are generally used to remove transition metal ions selectively. They are of two types: functionalised resins and templated resins. The selectivity in the former case is dependent on the pH of the medium, ... -
Studies in a trickle-bed reactor
Trickle bed reactors are widely used in petroleum industries and to a limited extent in chemical industries. In these reactors, a liquid reactant (or a liquid containing a reactant) trickles over a fixed bed of catalyst ... -
Stuides on slurry reactors
Bubble column slurry reactors (BCSRs) are used for three phase contacting in petroleum, petrochemical, and chemical industries and in pollution control. The main objectives of the present work are: to analyse and evaluate ... -
Towards designing PCM-Conscious database systems
Phase Change Memory (PCM) is a recently developed non volatile memory technology that is expected to provide an attractive combination of the best features of conventional disks (persistence, capacity) and DRAM (access ... -
Study of deep clouds over the indian region using insat-1B pixel data
In Earth’s atmosphere, a variety of clouds exist, and the present thesis is about the study of deep convective clouds, whose tops extend up to and beyond the mid troposphere. Deep convective clouds are often organized in ... -
Comparison of RADIATIVE FLUXES from INSAT and ERBE
Accurate knowledge of radiative fluxes at the top of the atmosphere (TOA) is necessary to study the variability of climate. The Indian geostationary satellite INSAT has been measuring radiative fluxes in a narrow spectral ... -
Comparison of microwave radiative transfer models and Retrieval of Humidity using Satellite Microwave Data
Water vapor plays an important role in tropical climate through its impact on Earth’s radiation budget. Accurate knowledge of the spatial and temporal distribution of water vapor is a fundamental requirement for understanding ... -
Chemical and biological investigation on antibiotic principles of Garcinia Morella
The thesis comprises two parts. Part I describes in four chapters the isolation and chemistry of some of the constituents, and Part II describes their biological properties. Part I. Chapter I: Isolation and Properties of ...