Concerns about pollution, climate change, limited fossil fuel supplies, and the desire to eliminate energy dependency have sparked a surge in interest electric vehicles (EVs). EV requirements resulted variety of difficulties remedies technology. One them is use DC-DC converters transfer level voltage from battery an other needed levels. An independent converter for each operating might be used ...

To make us who we are, each of around 86 billion neurons has to find and connect with thousands of other neurons, forming the dense and complex network of the human brain. How is the precision of neuronal wiring achieved? Liqun Luo, a neurobiologist at Stanford University, investigates this question. Luo, who was elected to the National Academy of Sciences in 2012, uses the olfactory system of ...

Ocean waves provide a vast, uninterrupted resource of renewable energy collocated around large coastal population centers. Clean from ocean can contribute to the local electrical grid without need for long-term storage, yet due current high cost extraction waves, there is no commercial wave farm in operation. One converter (WEC) device classes that show potential enable economic generation clas...

This paper proposes a high step-up DC–DC converter which integrates switched-inductor and switched-capacitor techniques with four-winding coupled-inductor. With technique, two primary windings of the coupled-inductor are charged in parallel discharged series to obtain voltage gain. Moreover, by adding sets diode-capacitor circuits on both side windings, not only can recycle energy causing spike...

The blood pressure patterns of three Kenyan communities have been studied: 861 members of the Luo tribe in a rural community, 281 members of the Kamba tribe in a rural community and 310 "urban" Luo living in Nairobi. The slope of linear regression of blood pressure with age was significantly different in each population: rural Luo had the smallest rise with age and urban Luo had the largest ris...

<p class="Abstract">In order to trail and produce the power generated on photovoltaic (PV) array grid, a PV exhibit coordinated double lift DC-AC converter used as contained single-stage micro inverter is introduced in this research. The flowing association of DC converter, rectifier, an provide high supporting rise with minimal obligation proportion. Due utilization greater variety force...

In this paper, Plug-in Fuel Cell Electric Vehicle (PFCEV) is considered with dual power sources including Fuel Cell (FC) and battery Energy Storage. In order to respond to a transient power demand, usually supercapacitor energy storage device is combined with fuel cell to create a hybrid system with high energy density of fuel cell and the high power density of battery. In order to simulate the...

This paper introduces a new single switch DC-DC fourth-order boost converter. The proposed converter is the improved version of an existing known as super-boost ISP achieves smaller input current ripple than when same parameters in passive components are used. Conversely, can be used to achieve ripple, which leads compact and cheaper design. A comparative evaluation showed reduction 37.3% store...

An M/string-theory origin for the six-dimensional Salam-Sezgin chiral gauged super-gravity is obtained, by embedding it as a consistent Pauli-type reduction of type I or het-erotic supergravity on the non-compact hyperboloid H 2,2. We can also obtain embeddings of larger, non-chiral, gauged supergravities in six dimensions, whose consistent truncation yields the Salam-Sezgin theory. The lift of...