DVD Burning Media

Though we commonly use ‘flying cars’ and ‘roadable aircraft’ as synonyms, they have a slight difference (which is easy to spot). Flying cars are cars adapted to fly while roadable aircraft are aircraft adapted to be used on the road. The inventors of the early flying cars worked more on adapting a car to fly in the air while the recent inventions of flying cars have been in adapting an aircraft for asphalt roads.

Whatever may be the case, a modern personal air vehicle will need to have the following modified features (all related to the basics discussed before):

Engines
These engines should have enough horsepower to lift the vehicle into the air and at the same time, be capable of providing controlled power for the vehicle to move on the road. The flying car will need to have an extra engine, if there is an engine failure during a flight.

Aircraft Propellers
Because the vehicle will be flying, it will obviously need the propellers (aircraft blades and wings) found on every aircraft. But as these wings will not be needed on the roads (obviously), they will have to be either easily detachable or foldable.

Landing Gear
To land the flying car on the ground, it will have to be fitted with the essentials found in the cockpit of a normal aircraft. It would have to be able to take the impact from the road and be able to balance itself to be used on the road.

Material
Needless to say, a flying car will have to be lightweight, yet have adequate ground mobility. While on the roads, a vehicle is more likely to be damaged but a slight damage on an aircraft can prove to be dangerous. So the material used in a flying car should be both light and strong.

Design
A road vehicle needs greater flexibility than an aircraft. An aircraft needs to be aerodynamically designed for better flight. The conclusion? A flying car should be small enough to fit on the road and big enough to fly. The requirements increase if the said personal air vehicle has to be parked in a house garage! read more »

A peak voltage of 50kV (50,000 volts) is generated inside the gun, however, it delivers lesser power because of some resistance that is offered by the target medium. When a circuit that produces electrical signals (Taser waves or T-waves) is established, a series of pulses 100 micro-seconds wide are generated inside the gun. The gun generates 19 such pulses per second. By making a simple calculation using these parameters, we can get the average current emitted from the Taser gun, which is 1.9 milliamperes.

The electrical signals from a Taser gun affect the human body by exploiting its skeletal and heart muscles.

Heart Muscles: The heart muscles are made up of interconnected fibers, which are made up of cells. The cell-to-cell resistance is very low and any electrical impulse that strikes a cell can quickly pass to the other cell in very little time. The conduction tissue of the heart is designed to enable smooth functioning of the four chambers of the heart. When a jolt of current at the right frequency hits the heart, a situation known as ventricular fibrillation (uncoordinated contraction of the ventricles of the heart) is created in the heart. Tasers cause this situation inside the human heart.

Skeletal Muscles: When a human brain orders a muscle tissue to contract, an electrical impulse travels down through the motor nerve and terminates at the middle of a muscle fiber. Here, the Taser pulses exploit the skeletal muscle fibers by directly jolting the motor nerves with electricity. The electrical signal from the Taser is converted into acetylcholine and binds with gated-ion channels when it comes in contact with the muscle fibers. The receptors (gated-ion channels) open up, allowing the sodium ions from the surrounding salty fluids to flow into the muscle. We know that movement of electric ions produce voltage. Likewise, this movement of sodium ions into the cells of the muscles, increases the inner cell voltage and also triggers the nearby ion-channels. Thus, a wave of voltage runs between the ends of the muscles which make them contract.

The pulses that are emitted from the Taser gun are designed considering the chronaxie (minimum time required to cause stimulation of a muscle fiber or nerve cell) of the heart and the skeletal muscles. The electric current (1.9 mA) from the Taser gun is far below the danger zone of a healthy human body. read more »

The CVD method works using a ‘bottoms-up’ approach utilizing by using carbon atoms as a base to start from. Hydrocarbon groups are broken down inside a low pressure chamber to separate the hydrogen and carbon. The breakdown process typically ionizes these atoms giving the user, control over these atoms. The ionizing process kicks the outer shell electron out of orbit and the whole atom gains a positive charge, which was earlier neutral. These ionized particles can then be accelerated, decelerated and focused dependent on deposition parameters. These ionized carbon atoms are the building blocks for forming diamonds. The substrates where this deposition takes place are heated to around 700 to 800 degree centigrade. The ionized carbon atoms float around and settle on this substrate since they cannot settle down on a low temperature surface. These atoms collect an electron from the surface and become neutral once again. Settled atoms then act as a ‘seed’, where other atoms can settle around and form the required diamond geometry which can then grow into larger sizes. This technique is highly dependent on process parameters like temperature, pressure, gas flow rates, rate of ionization and substrate material.

High Pressure High Temperature

The HPHT technique basically works by simulating the process of diamond formation under the earths crust. The major factors for diamond formation under the earth include carbon source, high pressure and high temperature. In the case of a HPHT model, the high pressure source is provided by multi-sectioned anvils compacting a graphite source. Graphite, as is widely known, is another allotrope of carbon atoms wherein the atoms are arranged in a hexagonal array in a planar arrangement. The high pressure and high temperature arrangement made possible by the anvil and temperature sources convert the planar arrangement into diamond-like formation of the atoms. This approach is typically a top town approach wherein you change the property of a bulk material to tailor it into the form required by the user. This method is comparatively less expensive as compared to the CVD method.

Whatever the method of synthesis, the end result lies in aligning the carbon atoms in a diamond structure formation. read more »

There has been talk about using WordPress beyond the typical blog set-up, into the realms of a full-fledged content management system or CMS. Yet, most people have no idea how this is even possible.
I have to stress that the default WordPress software is intended to be a blogging tool, so if you’re trying to make it work like a different type of content management tool you’ll have to use the correct plugins (enhancements) and have the a clear idea of what you want to achieve.
While the exact step-by-step method is out of the scope of this article, lets explore some of the ways you can use WordPress, as I have personally done before.
1) WordPress as An Article Directory
To make WordPress work as an article directory, you’ll need a special plugin, and a source for the articles. MyArticleMarketer.com is the perfect tool for this, as the articles there are usually human-approved. They also encourage free distribution of their articles to other article sites.
After you have set-up the WordPress plugin, you need to sign-up for Article Marketer’s distribution list. By filling in their form and specifying the categories (or choose all categories), you automatically qualify to receive all old and new articles that are submitted to MyArticleMarketer.com
However, with WordPress as an article directory, you’ll only be able to receive syndicated articles. Authors won’t be able to sign-up or create an account directly with you. It’s also against MyArticleMarketer.com’s terms or service to encourage authors to sign-up directly with you.
2) WordPress as a Membership Site
You can set-up a free or paid membership site using WordPress. All it takes is a few simple plugins to get the job done. Once you’ve installed the plugins, members will need to login to your site in order to view the content. You can also place a login form in your WordPress theme files to make it easy for users to lo in and out of your membership site.
However, the plugins only create a simple membership system, so if you’re looking to create different membership levels and more advanced features, you’d probably want to sign-up with a professional membership system like AmemberPro.net and use their available plugins to ingrate with WordPress.
At the time of writing, AmemberPro.net has available plugins for a reasonable cost and these will be installed by their support team, so you don’t have to worry about the technical setbacks.
3) WordPress as a Classified Ads System
WordPress can work like any other classifieds website too. Users can sign-up on your site and place classifieds in the form of new blog posts. They can even set expiry dates for their ads and specify listings or “wanted” ads.
However, you will need to create all the necessary categories and even create a sign-up information page to teach your users how to place ads. The upside of using WordPress as a classifieds site is that you can also use tagging tactics to get traffic from social bookmarking sites and sites like Technorati.com
4) WordPress as an Audio / Video Training Site
Using the membership plugins mentioned above or AmemberPro.net’s WordPress compatibility plugins, you can create a membership site with WordPress. Then, all you need to do is to add the “Podpress” plugin which takes care of all audio and video elements on your website.
You will be able to display and stream MP3 audio or FLV video using their built-in players. The Podpress plugin is really robust and also allows you to specify setting on iTunes, so you can make this commercially and available to the entire iPod / iTunes community.
As you can see by now, there’s a whole lot of possibilities when it comes to using WordPress to the extreme.
I’ve created an entire video training system to help newbies and advanced marketers alike master WordPress. Yet, every day brings new possibilities to using WordPress as a complex CMS instead of the modest blogging tool it was designed to be!

Author Thinks that WordPress is content management system that is available for every kind of website today. But sometimes for WordPress Customization you may need to hire a WordPress Designer or a web development company having expert WordPress developer like www.gowebbaby.com

I will give some guidelines to stay away from pricey errors when designing plastic components which often can cause expensive injection molding rework. A strategy to notice problems early on is to build rapid prototypes. There are several processes to manufacture samples. I will highlight a few of those processes.

It is important to stick to good design rules to help reduce design problems. Also, current CAD computer software may assist discover problems early on. The latest CAD software usually bundles numerous modules for analysis of the parts. The analysis features offered by contemporary software depend on the particular software. Typically these modules include strength and plastic flow analysis, thermal analysis, motion analysis. Moreover, every component may be assembled inside the software to guarantee correct fit. A further line of defense against pricey tooling reworking is to manufacture rapid prototypes. Prototypes often help discover a large number of problems early on. These may be made employing a number of processes. Next I am going to describe the most important methods to produce prototypes.

The most widespread procedure is stereolithography (SLA) which consists of an UV laser, a vat of photo-curable resin plus a central processing unit. A platform is lowered into the resin (by an elevator system), such that the surface of the platform is a layer-thickness underneath the surface of the resin. The laser beam subsequently traces the boundaries and fills in a two-dimensional cross section of the replica, solidifying the resin wherever it touches. After one layer is finished, the platform is lowered a layer. This process then repeats for the subsequent layer. This subsequently repeats for all the layers until the replica is complete. After completion, the model is removed from the resin, any extra resin is removed and the surface is smoothened.

One more method which is often less expensive than SLA is known as machined plastic prototype (MPP) in which a CNC machine is used to form the model from a solid block of plastic by cutting away all extra material.  One difference of this technique compared to SLA is that many plastic materials can be utilized. This offers the advantage that the sample will have comparable strength and behavior as the final part.

A different method, known as selective laser sintering (SLS) works rather similar to SLA. It too utilizes a laser and forms components by sintering a powder-based material. Components are formed within a part chamber.  This technique utilizes a build platform, powder cartridge in addition to a levelling roller. The build material is spread across the platform. The laser then traces a cross section of the component, sintering the material together. The platform subsequently descends a layer thickness and the leveling roller pushes material from the powder cartridge across the build platform, where the next cross section is sintered to the previous. This continues until the part is finished.  As soon as the replica is complete, it is removed from the part chamber and finished by removing any loose material and smoothing the visible surfaces.

Fused deposition modeling (FDM) is one more solid-based rapid prototyping system. Similar to SLA, components are shaped layer by layer. This method utilizes a build platform, an extrusion nozzle and computer. In this process, the material is melted and then extruded via a special head onto the platform for the first layer and next the platform is lowered a layer and the process repeats until all layers of the model are formed.