This increases the duration of the period of the structure and thereby serves as the purpose of base isolation system. The bearing is cycled into a hysteric damping as it absorbs the energy. LRB has a range of damping from 15% to 30% which is a function of displacement. Figure 4 show the alternating sheet of steel shims and rubbers circumscribing a lead
The tensile strength of the material increases because the subsequent application of tensile stress must nullify the compressive prestress. • This can result in improved structural capacity and serviceability compared to conventionally reinforced concrete. • High-strength tendons are used to produce compression. They are made of high- tensile steels, carbon fibers etc. and consist of threaded bars, single or multiple
The annual seismic energy time series of seismogenic zones are constructed by adding the energy releases of all the events in a particular year. The empirical mode decomposition technique is used to extract finite number of intrinsic mode functions (IMFs) from the seismic energy time series. The influence of solar and lunar cycles on earthquake occurrence of each seismogenic zone is confirmed by the estimated periodicities and percentage variances of IMFs. In the present article, PCA is used for the regionalization of global seismogenic regions. The principal components are estimated from the annual seismic energy series of 41 seismogenic zones.
Since the plastic container had a greater amount of GPE when rolled from a higher starting ramp, this was converted to a greater amount of kinetic, or moving, energy when rolling down the ramp. So, with the tallest starting ramp height, the plastic container had the the most kinetic energy. Due to having the greatest amount of kinetic energy, it had the most moving inertia, or momentum in the middle at the bottom. Newton 's first law states that a body at rest stays at rest and s body in motion stays in motion unless after upon by an unbalanced force (inertia). In this case, the unbalanced force is rolling friction, and it always stayed the same throughout this experiment.
THE RATE THEORY OF CHROMATOGRAPHY This theory describes the actual process going on inside the chromatographic column with respect to the time taken for the solute to equilibrate between the stationary and mobile phase. The kinetic effect depends upon how much time the mobile phase spends in contact with the stationary phase. The rate of elution affects the band shape of a chromatographic peak. It is also affected by the different paths available to solute molecules as they travel between particles of stationary phase. The reason for band broadening was well explained by Van Deemter equation for plate height HETP = A + B/u + Cu where u is the average velocity of the mobile phase.
The values of the experimental and the theoretical density determined and tabulated in table 1. From table 1, it can show a little difference between the calculated and the experimental values that represent the accurate measurements. The density behavior can be explained according to the molecular weight and the structural volume. From fig 3 it can be observed that density increase as the increase of MoO3 that have larger molecular weight than the B2O3. From the structural units view the introduction of MoO3 into composition converts symmetric BO3 triangles into BO4 tetrahedral or converts the latter into asymmetric BO3 triangles.
5. From the figure, it is observed that as the height of the liquid pool increased from 10 to 30 cm, the amount of phenol removed to the foam increases from 43.00603 to 76.13823 and enrichment ratio too increases from 2.93856 to 5.57488. This is due to the fact that as the height increases the residence time of the bubbles in the liquid pool increases. After a certain point, the adsorption of phenol onto bubbles could reach equilibrium, beyond which the percentage removal and enrichment ratio decreases to 15.57872 and 4.79045, respectively
This can be noted and from the previous table. So, according to the Oddon-Harkins rule, the element with an even atomic number is more abundant than the next element with an odd atomic number. This rule also governs the distribution of all elements in the universe, but is much less pronounced than in the case of lanthanides. Additionally, early on, geochemists observed a pattern in the occurrence and crustal abundance of some lanthanides. Lanthanides with lower atomic numbers were noted to be more common ionic constituents in REE mineral ores and, in general, occurred in greater abundance than the lanthanide elements with higher atomic numbers.
It then moves on to non-uniform plastic deformation as necking starts to occur and when it reaches the fracture stress, the aluminium alloy experiences a ductile fracture.Aluminium alloy experience ductile fracture as it has high tensile strength, which holds the metal atoms together resisting deformation, hence when it has reached its unbearable tensile stress, the aluminium alloy would then fracture. Aluminium alloy has the highest Young's modulus compare to the other 2 specimens. -40-200204060801001201401600 0.05 0.1 0.15 0.2 0.25Stress (MPa)StrainoffsetAlAlloy Polystyrene (PS) Polystyrene undergoes elastic deformation with little plastic deformation before experiencing a brittle fracture as seen on the graph. This is due the high young's modulus polystyrene has, as it has a benzene-ring side group that forms strong intermolecular van der waal's forces of interaction, however, that restricts polymer chain from rotating, hence when high amount of stress is applied to it, it would fracture, instead of sliding away to form new bonds with neighbouring atoms. -1001020304050600 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04Stress