Sensor nodes and other ultra-low power devices can be powered with micro energy harvesting. In case of low environmental power thermo generators, solar cells, inductive generators or radio frequency (RF) energy harvesting circuits provide an extremely low output voltage that needs to be increased to generate a suitable power supply. This paper presents a DC-DC converter that starts operation at...

We study the sticking rate of cold atoms on elastic membrane by exploring the self-energy Σ of the cold atom. We use the Feynman-Dyson perturbation theory to calculate the free atom self-energy to 1-loop. We find non-zero finite sticking rate Γ that agrees with the Golden rule result in ultra-low energy regime. However, with the 1-loop self-energy insertion, we find a suppressed sticking rate Γ...

the unique properties of air-cooled bainitic steels have been described. a series of mn containing air-cooled bainitic steels invented by authors is presented in this paper: including low carbon granular bainitic steels, low carbon grain-boundary allotriomorphic ferrite/granular bainite duplex steels, medium and medium high carbon bainite/martensite duplex steel, and low carbon carbide free bai...

background: appetite lowering characteristics of dairy have attracted scientists to look for its effect on energy intake particularly among children. in the present study, we tried to assess the effect of low-fat milk on total and short-term energy intake among obese boys in a randomized three-way cross-over clinical trial. methods: a total of 34 obese 10-12-year-old boys were randomized to con...

The applications related to ultra-low power wearables like internet of things, robotics, intrusion detection, and image security have become a major computing paradigm the latest disruptive technology after artificial intelligence. Ability connect with other systems from low high level has prompted unprecedented array in all fields human activity science, engineering, health, leisure everyday l...

While the capacity of Mobile Ad Hoc Networks (MANETs) has received considerable attention, the issue of endto-end latency has been largely ignored. As MANETs get larger and denser with an increasing number of end-to-end hops, the latency and jitter experienced by packets will be prohibitively high for existing and emerging real-time applications. We present and evaluate a design concept for ach...

Recent advances in ultra-low power chip design techniques, many originally targeting wireless sensor networks, will enable a new generation of body-worn devices for health monitoring. We utilize the state-of-the-art in low power RF transmitters, low voltage boost circuits, subthreshold processing, biosignal front-ends, dynamic power management, and energy harvesting to realize an integrated rec...

A simple microprocessor controlled mini-electrochemical (EC) instrument integrating with square wave voltammetry (SWV) was designed nd fabricated. Direct digital frequency synthesizer (DDFS) was exploited in the circuit design to generate a linear and very low frequency canning waveform for SWV. An ultra-low bias current, a high performance operational amplifier, a lock-in amplifier, and severa...