DC and intrinsic low-frequency noise properties of p-channel depletion-mode carbon nanotube field effect transistors (CNT-FETs) are investigated. To characterize the intrinsic noise properties, a thin atomic layer deposited (ALD) HfO(2) gate dielectric is used as a passivation layer to isolate CNT-FETs from environmental factors. The ALD HfO(2) gate dielectric in these high-performance top-gate...

— We perform a noise analysis of a simple push-pull network, accounting for the localization of substrate to a small fraction of the total cell volume. We find that this scheme can produce significantly higher levels of intracellular signaling noise than well-mixed models. We apply these results to the bacterial chemotaxis system and study its effect on information transmission, chemotactic per...

The experimental line shape broadening observed in adsorbate diffusion on metal surfaces with increasing coverage is usually related to the nature of the adsorbate-adsorbate interaction. Here we show that this broadening can also be understood in terms of a fully stochastic model just considering two noise sources: (i) a Gaussian white noise accounting for the surface friction, and (ii) a shot ...

The activated surface diffusion of interacting adsorbates is described in terms of the so-called interacting single adsorbate approximation, which is applied to the diffusion of Na atoms on Cu 001 for coverages up to 20% in quasielastic He atom scattering experiments. This approximation essentially consists of solving the standard Langevin equation with two noise sources and frictions: a Gaussi...

Diverse oleaginous yeasts can grow and accumulate lipid on a broad range of competitive substrates. In this study crude glycerol from conventional biodiesel production was used as the substrate for lipid production via oleaginous yeasts. Various cultivation conditions were tested – different C/N ratios, temperatures and addition of salts. Candida lipolytica, Yarrowia lipolytica, Trichosporon fe...

background noise exposure is known as a risk factor for hearing loss and one of its effects is noise-induced stress. cortisol as a stress hormone is used in noise-induced stress assessments. objectives the aim of this study was to measure and compare saliva cortisol concentrations in the morning and evening in normal work day and rest day in both case and control groups and to assess the associ...

A methodology is proposed to improve the efficiency of the substrate impedance extraction process for a large scale circuit by exploiting the circuit activity. Similarly biased regions of the substrate short-circuited by the ground network are identified to reduce the computational complexity of the extraction process. Each of these voltage domains is represented by a single equivalent input po...

This paper explores folded patch antennas for the development of low-cost and wireless smart-skin sensors that monitor the strain in metallic structures. When the patch antenna is under strain/deformation, its resonance frequency varies accordingly. The variation can be easily interrogated and recorded by a wireless reader that also provides power for the antenna operation. The patch antenna ad...

conclusions due to the long exposure to the loud noise during the day, hearing loss in drivers is significant. the left ear displays greater loss than the right ear. therefore, strategies to prevent hearing loss in drivers could include education, lifestyle changes and compliance issues related to hearing health, use of personal protective equipment, conducting periodic examinations and early t...

methods for measuring toxicity or respiratory activity of microbial cultures can be used as tools for assessing the presence of chemicals and their impact on the streams. the proposed toxicity test is based on the respirometric characteristics of the bacteria according to the principals of biolog’s microplate system. as the microorganism are utilizing the carbon source (peptone), the reductio...