Abstract
An active current injection network for a three-phaserectifier is proposed. The proposed circuit uses three bidirectionalswitches operating at low frequency and a half-bridge inverteroperating at high frequency. It also uses an inductor in orderto make the current modulation. Because only 3.7% of the totalpower delivered to the load is processed by the injection network,the proposed converter offers high efficiency, and not only a highpower factor is obtained but also the total harmonic distortion isreduced. Operation, analysi ....etc

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ABSTRACT
A high-frequency electrical resonance-based ignition concept
is in development to replace conventional spark ignition
functionality for gasoline engines employing various types of
fuel injection methods. The concept provides the benefit of a
continuous discharge phase and the electrical power of the
discharge can also be adjusted to the needs of the combustion
conditions.
This concept employs an alternative method of generating
high voltages, using inductors and capacitors trimmed such
that the supplied energy steadil ....etc

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ppt of reflection cracking studies of high strength high volume flyash concrete beam analyzing using fem ....etc

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DYNAMIC MEMORY ACCESS MANAGEMENT FOR HIGH PERFORMANCE DSP APPLICATIONS USING HIGH-LEVEL SYNTHESIS
PRESENTED BY:NIRMAL JOSEPH
S7 ECE
College Of Engineering, Trivandrum
2007-11 batch



OUTLINE
INTRODUCTION.
TARGETTED ARCHITECTURE.
HIGH LEVEL SYNTHESIS.
DESIGN FLOW.
CONCLUSION.
REFERENCES.


DYNAMIC MEMORY ACCESS(DMA)
Also called indeterminate access sequence.
A part of data is not known before the execution of the application.
Memory acces ....etc

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Abstract—

This paper proposes a new soft-switched continuousconduction- mode (CCM) boost converter suitable for high-power applications such as power factor correction, hybrid electric vehicles, and fuel cell power conversion systems. The proposed converter achieves zero-voltage-switched (ZVS) turn-on of active switches in CCM and zero-current-switched turn-off of diodes leading to negligible reverse-recovery loss. The components’ voltage ratings and energy volumes of passive components of the proposed converter are greatly reduce ....etc

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a high pressure water jet in rock cutting.


Presented by
Nandharaj .M
S8MB .102

Guided by
Dr santhoshkumar .N


Comparison of conventional and Abrasive water jet machining


Conventional machining

Contact mechanisms
Detonation of an explosive with in a confined space
damage is normally in the form of a narrow slot of varying depth



Abrasive water jet machining


non‐contact mechanisms
application of high Pressure water jets
--
Lower machine vibration
increased product size.
l ....etc

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PRESENTED BY :
BIJILY B


INTRODUCTION-CONCRETE
 The word concrete comes from the Latin word concretus (meaning compact or condensed), the past participle of concresco, from com- (together) and cresco (to grow).
 Concrete is a construction material composed of cement ,coarse aggregate , plus a fine aggregate such as sand, water, and chemical admixtures.
ORIGIN OF HPC AND UHPC
 Environmental aspects
 The necessity to decrease the amount of CO2 in atmosphere.
 Replacement o ....etc

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Fuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on Experiment
Abstract
Ever increasing rate in the production of fuel injection vehicles and the significance of decreasing the pollutions in nature trigger numerous researches in optimizing the fuel injection system and recognizing the fuel behavior as well as the process of preparation of mixtures in the inlet port of fuel injection vehicles. Fuel injection pressures in diesel engine plays an important role for engine perf ....etc

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Electroactive Polymer “Artificial Muscle” Operable in Ultra-High Hydrostatic Pressure Environment
ABSTRACT—
Transducers for high-power sonars, an important tool for undersea exploration and monitoring, may be required to work in deep water where pressures are higher than several tens of MPa.
In contrast with the piezoelectric devices commonly used as highpower sonars for seabed resource exploration, electroactive polymers offer the benefits of high coupling efficiency, low cost, and the ability to form ....etc

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Abstract:
Transducers for high-power sonars, an important tool for undersea exploration and monitoring, may be required to work in deep water where pressures are higher than several tens of MPa. In contrast with the piezoelectric devices commonly used as high-power sonars for seabed resource exploration, electroactive polymers offer the benefits of high coupling efficiency, low cost, and the ability to form large area skins or other devices. One question about the use of electroactive polymers for sonar has been their ability to withsta ....etc

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