background: esthetic demands among patients have led to the introduction of tooth-colored restorations. composite resins bond to enamel applying acid etch technique. total etch adhesion systems are still considered as golden standard among bonding systems. however, clinicians have tendency towards using adhesive systems with a simplified application procedure. the aim of the present study is to...

Abstract—This paper presents comparative study and implementation of Unified Power Quality Conditioner (UPQC) to eliminate harmonics and reactive power compensation in a single-phase to threephase converter system. The proposed configuration solves typical problems encountered in remote rural area applications, where only a single-phase supply is available and there is a demand for three-phase ...

STATEMENT OF PROBLEM When veneering composite resin-metal restoration is prepared, the fact that bond strength between Ti and composite resin is relatively weak should be considered. PURPOSE The purpose of this study is to evaluate the shear bond strength between the veneering composite resin and commercial pure (CP) Ti / Ti-6Al-4V alloy according to the method of surface treatment. MATERIA...

We investigated how physiologically observed forward suppression interacts with stimulus frequency in neuronal responses in the guinea pig auditory cortex. The temporal order and frequency proximity of sounds influence both their perception and neuronal responses. Psychophysically, preceding sounds (conditioners) can make successive sounds (probes) harder to hear. These effects are larger when ...

Miscanthus is emerging as a promising feedstock for domestic biofuel production. However, inefficiencies of the machinery that is used for harvesting bioenergy crops such as miscanthus currently prohibit commercial production. The performance of a mower-conditioner used to harvest miscanthus was evaluated, and modifications to the disk head were made to allow the machine to operate more efficie...

Continuous innovations and modernization has greatly contributed to the development in automobile industry. Automobile has become a huge luxury for everyone in all the countries. All modern automobiles like cars are equipped with air conditioner and heater units. An air conditioner alters the properties of air (temperature and humidity) to more comfortable conditions in building, house or autom...

This paper presents a new transformation scheme for the control of active power-line conditioner. An active powerline conditioner is a power electronic device which is designed to su.ppress the power-line distortions caused by the non-linear loads. Currently, the method of instantaneous power transformation is the most popular one for the active power-line conditioning control. This method uses...

An UPQC (Unified Power Quality Conditioner) is anequipment composed by two active conditioners operating in a combined way. One of the active conditioners is connected in series with the electrical power system, allowing the compensation of problems in the system voltages. The other active conditioner is connected in parallel with the electrical system, and allows the compensation of current ha...