applied sciences Free Articles
Geothermal Energy
Authors: Relly Victoria V. Petrescu and Florian Ion T. Petrescu Geothermal power requires no fuel (except for pumps), and is therefore immune to fuel cost fluctuations.
Read MoreMilitary aviation, Part II
Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu
Read MoreIn-Dash Receiver Pioneer AVIC-X920BT with 6.1 Widescreen Display
Review about In-Dash Receiver Pioneer AVIC-X920BT with 6.1 Widescreen Display
Read MoreInfluence of Curing Light Type on the Discoloring Stability of Dental Restorative Composite
Discoloration kinetics of 4 commercial nano-filled resin composites polymerized with LED and QTH source types in 4 different staining media held at 37°C are investigated. Quartz Tungsten Halogen (QTH) and Light Emitting Diode (LED) were used. Dental composites color change was monitored with a digital spectrophotometer at one, two and four weeks for quantitative comparison. The kinetics and intensities of the color change in accelerated aging tests in staining media were monitored and discussed. Discoloring followed diffusive driven kinetics. The four composites polymerized with QTH light showed higher differences in color change intensities compared to LED cured ones.
Read MoreNACA and NASA, Part VII
Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu
Read MoreHomeopathy or «Similia Similibus Curentur»
Homeopathy or homoeopathy (from the Greek Ìμοιος/hómoios, "similar" and π¬θος/páthos, "suffering" or "disease") is a science created by Samuel Hahnemann in 1796. The homeopathic practice rests on three principles: The similarity, the individualization of cases and the infinitesimal.
Read MoreBiological Hip Joint Prostheses and Biomechanical Behavior of Implanted Femur
Biofidel femur Finite Element Models have been developed using specific combination of Computer Tomography segmentation and solid modeling software tools able to represent bone physiology and structural behavior. These biofidel Finite Element Models (FEM) is used to evaluate the modification of the physiological stress distribution in a prosthesized femur, and to assess new design criteria for the development of biomimetic hybrid biological hip prostheses.
Read MoreLife's Basic Elements
Presents the four basic elements of life: oxygen, hydrogen, nitrogen and phosphorus.
Read MoreMedicine Services Robotics
It is an entry technique in use recently, albeit in selected centers and represents a further step in the field of minimally invasive surgery. Basically it has the same indications but, at present, is reserved for selected patients. Compared to traditional video-assisted surgery presents some important differences. The surgeon is physically distant from the operative field and sits at a console, equipped with a monitor, from which, through a complex system, controls the movement of the robotic arms.
Read MoreMechatronic System Able to Determine the Concentration of Carotenoids
Present a Mechatronic System Having Able to Determine the Concentration of Carotenoids.
Read MoreModern Propulsions for Aerospace-Part II
The aircraft engine (ionic propulsion unit of ions, that accelerates the positive ions through a potential difference) is approximately ten times more efficient than classic system based on combustion.
Read MoreMachines and Robots Driven by Muscle Like Acting NiTi Alloys
The biomechanically inspired machine that is discussed in this paper refers to the antagonistic muscles pairs, which belongs to the Skeletal Muscles and are normally arranged in opposition so that as one group of muscles contract another group relaxes or lengthens.
Read MoreManagement of Renewable Energies and Environmental Protection, Part III
Authors: RVV Petrescu and FIT Petrescu
Read MoreNACA and NASA, Part VI
Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu
Read More