نتایج جستجو برای: breakdown
تعداد نتایج: 30163 فیلتر نتایج به سال:
We present experimental results on single-event-induced breakdown in sub-5-nm plasma-enhanced SiO2, nitrided SiO2, Al2O3, HfO2, and Zr0 4Si1 6O4 dielectrics typical of current and future-generation commercial gate oxides. These advanced oxides are found to be quite resistant to ion-induced breakdown. Radiation-induced soft breakdown was observed in some films with 342 MeV Au (LET = 80 MeV/mg/cm...
Spectral emission from optical breakdown in the bulk of a transparent dielectric contains information about the nature of the breakdown medium. We have made time resolved measurements of the breakdown induced emission caused by nanosecond and femtosecond infrared laser pulses. We previously demonstrated that the emission due to ns pulses is blackbody in nature allowing determination of the fire...
scheduling is an important subject of production and operations management area. in flow-shop scheduling, the objective is to obtain a sequence of jobs which when processed in a fixed order of machines, will optimize some well defined criteria. the concept of transportation time is very important in scheduling. transportation can be done by robots. in situations that robots are used to transpor...
Recent studies suggest that sepsis stimulates ubiquitin-dependent protein breakdown in skeletal muscle. The 20S proteasome is the catalytic core of the ubiquitin-dependent proteolytic pathway. We tested the effects in vitro of the proteasome inhibitors N-acetyl-L-leucinyl-L-leucinal-L-norleucinal (LLnL) and lactacystin on protein breakdown in incubated muscles from septic rats. LLnL resulted in...
For probability distributions on IR, a detailed study of the breakdown properties of some multivariate M-functionals related to Tyler’s (1987a) “distribution-free” M-functional of scatter is given. These include a symmetrized version of Tyler’s M-functional of scatter, and the multivariate t M-functionals of location and scatter. It is shown that for “smooth” distributions, the (contamination) ...
Improvement in the time-zero dielectric breakdown (TZDB) endurance of metal-oxide-semiconductor (MOS) capacitor with stacking structure of Al/HfO2/SiO2/Si is demonstrated in this work. The misalignment of the conduction paths between two stacking layers is believed to be effective to increase the breakdown field of the devices. Meanwhile, the resistance of the dielectric after breakdown for dev...
Pedestrian dynamics has been being a popular research area. In this paper, breakdown probability in the bidirectional flow that includes pedestrians with heterogeneities is investigated. Reaction time appears to have the most pronounced breakdown probability, followed by desired velocity and then body size. The relationship between the start time of breakdown and inflow reflects the decreasing ...
Electrical breakdown induced by systematic electrostatic discharge (ESD) stress of thin-film transistors used as switches in active matrix addresses liquid crystal displays has been studied using electrical measurements, electrical simulations, electrothermal simulations, and postbreakdown observations. Breakdown due to very short pulses (up to 1 s) shows a clear dependence on the channel lengt...
-Tetrahydrocannabinol (THC), the psychoactive marijuana plantderived cannabinoid, and numerous synthetic derivatives have been shown to bind to a specific brain receptor, cannabinoid receptor 1 (CB1) (Howlett et al. 1990; Matsuda et al. 1990; Herkenham et al. 1990; Mailleux and Vanderhagen 1992). Arachidonoyl ethanolamide (anandamide), homo--linolenyl ethanolamide, and docosatetraenyl ethanolam...
Mutualisms are ubiquitous in nature despite the widely held view that they are unstable interactions. Models predict that mutualists might often evolve into parasites, can abandon their partners to live autonomously and are also vulnerable to extinction. Yet a basic empirical question, whether mutualisms commonly break down, has been mostly overlooked. As we discuss here, recent progress in mol...
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