For example, there is little, if any, sublethal 52 or potentially lethal damage recovery. 101 This is manifest as a reduction or loss of the shoulder of the acute-dose radiation survival curve, little or no sparing effect of dose fractionation or dose rate, and a corresponding reduction in the tolerance doses for normal tissue complications ...
ادامه مطلبFor medium estimates of damage function and discount rate, we find a BCR of 1.5 to 3.9. ... Specifically, if the COACCH damage function relative to 1986–2005 temperature is noted by (D_{1986 ...
ادامه مطلبThis equivalent relative plastic motion is compared to the specified limit values to assess damage initiation. The equivalent relative plastic motion at which damage is initiated can be a function of the mode-mix ratio (see "Connector plastic behavior," Section 25.2.6).
ادامه مطلبIf this is the case, then the relative damage rates should be compared by comparing neutron fluxes above the energy required to give the critical spike size, that is JE8 f E) dE; before such an analysis can be made, the threshold energy Eg must be known. An alternative hypothesis is that damage is a function of spike size, and the bigger the ...
ادامه مطلبThese aspects include operational life reduction ratio, rutting rate, linear and nonlinear relative damage concepts. It was concluded that on average real tires with …
ادامه مطلبExchange rates are always relative and are expressed as a comparison of the currencies of two countries. ... A higher exchange rate can be expected to damage a country's balance of trade. That is ...
ادامه مطلبRBE (relative biological effectiveness) is a relative measure of the damage done by a given type of radiation per unit of energy deposited in biological tissues. Compared with higher energy photons such as cobalt-60 gamma rays, lower energy electrons and photons produce more dense clusters of ionizations, leading to more …
ادامه مطلبIn terms of the RSM-CQC, the maximum relative errors of RSM-CQC are lower than 0.11%, and the 2-norm relative errors are lower than 0.1%, no matter the expected damage rate or expected life, which can be fully demonstrated that the RSM-CQC has no loss of accuracy compared with the Single Moment method.
ادامه مطلبLand subsidence and uplift influence the rate of sea-level rise. Most coastal populations live in subsiding areas and experience average rates of relative sea-level rise three to four times faster ...
ادامه مطلبThe radiation damage protection found for small molecule (anhydrous) organic compounds is generally rather limited or even non-existent. However, large molecular, hydrated materials show as much as a 10-fold reduction at low temperature in the rate at which radiation damage occurs, relative to the damage rate at room temperature.
ادامه مطلبAbstract. Materials and Structures (2007) 40:221–227 DOI 10.1617/s11527-006-9133-9 ORIGINAL ARTICLE Relative damage evaluation of concrete in a road …
ادامه مطلبSurprisingly, the relative variation in damage drops with age: cells become more similar to each other in terms of relative damage, indicating increasing determinism with age.
ادامه مطلبRelative damage among shock absorber conditions ... For this first analysis, the other quarter car model variants, such as spring rate, tire pressure and spring mass were considered as constants, but it is recommended to apply the same methodology to those parameters, in order to have a complete view of the key factors that contribute to …
ادامه مطلبThe relative damage accumulation rate in each loading cycle can be considered as a parameter characterizing the contribution of load type to the total …
ادامه مطلبThe effect of ionising radiation is influenced by the dose, the dose rate, and the quality of the radiation. Before 1990, dose-equivalent quantities were defined in terms of a quality factor, Q(L), that was applied to the absorbed dose at a point in order to take into account the differences in the effects of different types of radiation.
ادامه مطلبThe α-component represents non-repairable damage, while the β-component represents repairable damage. The damage caused by the β-component is repairable with time, so lowering the fractional dose results in lowering β-component damage to make α/β increase. Theoretically, a very low dose rate (dose/time) radiation …
ادامه مطلبThe net impact of temperature-related mortality ranges from a − 1.6% [95% CI − 4.3–1.0%] decrease in the mortality rate for Iceland to a 25.5% [6.5–44.5%] increase in the mortality rate ...
ادامه مطلبMitochondrial dysfunction has reported in several diseases including diabetes, cancer, skeletal muscle disorders and neurodegenerative diseases such as Wolfram syndrome. Several different methods have evolved to study mtDNA damage including Southern blotting, 8-oxoG damage, or a comprehensive scanni …
ادامه مطلبWe propose a method to extract the relative amount of damage from the channeling profiles. The amount of damage caused by the N implant shows a sigmoidal dependence on the dose-rate with a transition region between 10 12 and 5 × 10 12 cm −2 s −1 where the damage increases by a factor of 1.6. This behavior is in contrast to the …
ادامه مطلبThe S-N curve defines the number of cycles to failure, N (S), for stress range S, and also defines an endurance limit, F L, below which no damage occurs. OrcaFlex uses these to …
ادامه مطلبA non-negligible relative damage rate of about 18.5% is observed at the trailing edge—hub transition. A summary of the damage rate results is provided in Table 41.11. The deviations of the damage rate with respect to the fine grid solution reach from about −17% to + 22% and are therefore considerable compared to the variance of the …
ادامه مطلبAfter estimating Young's modulus of the intact state from the correlation between AE rate and a damage parameter in each core, the damage levels of …
ادامه مطلبThese aspects include operational life reduction ratio, rutting rate, linear and nonlinear relative damage concepts. It was concluded that on average real tires with tread cause 57% reduction in the operational life. In average, real tires with tread induce 1.23 times more mm per cycle. Based on linear relative damage analysis, in average, real ...
ادامه مطلبThe relative damage rates are close to fatigue life ratios obtained from testing except for that under spectrum 5. As we known, the interaction and nonlinear effect of …
ادامه مطلبBecause the relative damages of all samples are mostly below 1.0, it is considered that they are fairly damaged. 5.4. Relation between relative damage and dynamic young's modulus(E d /E ∗ ) Fig. 6 AE generating …
ادامه مطلبMost objects are composed of multiple materials, each with its own rate of thermal expansion and contraction. Rapid changes in humidity will cause minute movement in these materials relative to one another, which can cause physical damage such as cracking or delamination. Environmental Control
ادامه مطلبThe new law implemented the following cost reduction measures: Personal Injury Protection (PIP) Choice: You will now be able to choose a coverage level that is appropriate based on your needs and budget. Rate Reduction: Each insurance company will be required to reduce PIP statewide average medical premiums. Your premium will depend on your …
ادامه مطلبSerious damage can cause accidents in the unit, threatening the safety of the operators. ... It occurs within the range of 40% to 70% or 30% to 80% of the optimal flow rate. Therefore, when the hydraulic turbine is operating at partial load (generally 40% to 75% of the full load), the vortex band will oscillate significantly due to the complex ...
ادامه مطلبTo analyze the occurrence of AE events quantitatively, the rate-process theory was introduced (Ohtsu 1992). Suzuki, one of the co-authors of this article, proposed evaluating concrete damage using ...
ادامه مطلبThe prestressed cables used for external strengthening and the suspender cables used for arch bridges may suffer damage resulting from the corrosion or fracture of steel wires. Under these scenarios, the effective areas of the cables will decrease, but the cable forces will remain almost constant, which limits the ability to detect this damage …
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