2012
Entries

A design of a special differential light amplifier has been designed to detect direct light and filter out the reflected light from the sky. The primary function is to orientate a solar collector to face the Sun, with AZIMUTHIAL tracking of 270 Deg and ALTITUDINAL 90 Deg .The concept is based on the idea of combining a signal indicating the direction of the sun rays, within one solid angle of “quarter hemisphere”, with a signal indicating, similarly quarterly, the relative angular displacement (or error) between the sun rays’ direction and the tracker’s orientation AZIMUTHIALLY. http://www.youtube.com/pstefanides#p/u/114/D2puwgq6r90
http://www.stefanides.gr/Pdf/HELIOTROPIO.pdf
The direction of the sun rays, may be within one of four of a set of such angles: ?, ? or ? at ...

A Disposable Pad For The Prevention And Treatment Of Decubitus

Background:

Socially and medically under the radar, the annual cost of treating decubitus, commonly known as “bedsores” or “pressure sores,” is estimated at eleven billion dollars in the US. Hospital administrators are acutely aware of both the monetary cost and the cost in pain and suffering.

Historically, fleece has been very effective. It is not, however, commensurate with current hospital practices.

Pro-offered Solution:

Presently, low cost and disposability are essential, in addition to functionality.

The treatment for bedsores is the same as for their prevention, save the addition of anti-septic salves and wound healing protocols/ procedures.

The six criteria, then, are: the circulation of air directly against the skin, ...

This invention is a photon-interactive Gaussian surface lens method that converts incident photons from a single or a plurality of wide band gap semiconductor class light emitting diode dies into a secondary emission of photons emanating from a composite photon transparent colloidal stationary suspension of quantum dots, high efficiency phosphors, a combination of quantum dots and high efficiency phosphors and nano-particles of metal, silicon or similar semiconductors from the IIIB and IVB Group of the Periodic Table and any nano-material and/or micro/nano spheres that responds to Rayleigh Scattering and/or Mie Scattering; and a plurality of quantum dots in communication with said nano-particles in said suspension. The patent teaches that utilizing this method means results in improved narrow pass-band of red, ...

Is it possible to build a high power, portable and inexpensive x-ray machine?

Imagine a soldier falls and needs to be evacuated via helicopter to a base camp, or perhaps a horse falls during a race and presumably has a broken leg, how could anyone diagnose the damage without radiography equipment?

Though I've never personally been in any of these situations in my 18 years, it's not hard to imagine how useful such an x-ray machine would be. Currently x-ray machines are large, heavy, power hungry items which aren't very useful anywhere but a hospital setting.

While the coolidge tube certainly hasn't gotten better over the years, batteries, capacitors and semiconductors have improved to the point where making a compact, ...

Primarily aimed at the domestic and SME market, Senical Ltd has designed a micro-generation unit with modular components allowing these components to be “swapped out” to maximize the usage of natural resources with minimum footprint. The main housing has an interchangeable top component which can be either a solar collection unit, a wood burning unit or a barbeque. The housing also hosts two removable vertical axis wind turbines and two internal sterling engines driven by the temperature differentials captured by the ground and top components. The unit also has its own internal power storage unit.

As a stand-alone unit, the benefit is energy offset; however, the unit is designed to be scalable by having interconnectivity capabilities. The vision for ...

A Design of a Special Light Differential amplifier [ First Photo], originally designed to Detect Direct Light and Filter Out the Reflected Light from the Sky [ the primary function of which was to Orientate a Solar Collector by Locating and Tracking the Sun”], was specially designed for incorporation into a conceptual “SPEED MEASURING SYSTEM” for testing speeds of air-engines’ nozzle actuators, in the lab.

The system measured TIME and for a given LENGTH of a Moving Blade attached to and moved with a nozzle actuator Rod, covering/uncovering one of two [drilled on a metal flat plate] holes, under which correspondingly two Photoconductor Sensors were housed [Second Photo], changing thus the state conditions of the amplifier from ...

It can be applied to the entire range of acceleration voltages. The main characteristic of the new gun is that the control and stabilization of the welding current is obtained by connecting the controlling electrode to a positive potential with reference to the cathode. The acceleration electrodes structure additionally comprises, in comparison to the triode gun, a supplementary electrode, placed between the controlling electrode and the anode and connected to same potential as the cathode. Thus, in case a discharge is triggered, the welding current will tend to decrease and not to increase, hence eliminating the possibility of damaging the welded parts, despite the use of very sophisticated and expensive means of active protection at the high voltage power ...

A NEW FAN ROTOR FOR AIRCRAFT JET ENGINE

Now a turbofan jet engine is produced with compressor fan blades which are rigidly fitted to a single row on the front flange of the fan shaft. The best turbofan engine today make of 40% potential energy stored in the fuel.

It is known the research and development efforts, mainly focused on the next generation of turbofan engines, for decrease fuel consumption.

The operating characteristics of turbofan engine can be improved by adopting a new constructive solution presented in the figure. Best performances are obtained by changing the blade angle of secondary air flow in relation to maintaining constant r.p.m. speed, without  affecting primary air flow characteristics. Changing the ...

Sleep disorders are simultaneously among the most common diseases and the least diagnosed. Symptoms range from low energy, irritability, and concentration difficulties to sleep attacks, cardiac arrhythmias, and hallucinations. Considering the USA, more than 70 million people possibly have a sleep disorder, and a National Science Foundation’s poll found nearly half “rarely or never get a good night’s sleep on weeknights” and upwards of 20% are “sleepy.” Aside from affecting immune system function, cognitive abilities, and metabolism, consequences of sleep deprivation affect economies annually through billions of dollars in lost productivity.

Diagnosing sleep disorders is a comprehensive process and substantial time commitment, requiring patient-monitoring for 12–36 hours in a sleep center. As the setting is unfamilar and patients must ...

A rotary wing rapidly deployable aerial wind turbine

This design is an inexpensive and rapidly deployable alternative to installation of wind turbines. Although wind energy is the least expensive of all the alternative energy sources, nonetheless the installations of wind turbines are inherently expensive (5-6 times more than conventional hydrocarbon powered generation facility) due to the wind turbines’ requirement for a massive foundations (nearly 3000 square feet in area and 6 feet deep of heavily reinforced concrete) and large supporting poles (20-30 stories tall). Also the ground based wind turbines are rated for 12.5 meters/sec (28 miles/hour) wind, since the wind typically does not blow at this speed, a power factor of 40 -60 percent is not unusual, meaning ...

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