Yesterday, President Obama declared that we had "national emergency" related to the jobs situation in America. Today, in response, Senate majority Leader Harry Reid (D-NV) took action by bringing up a bike paths bill.
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The laser hair removal and pulsed light hair removal are methods of permanent hair removal. The methods based on laser or light are sometimes called photo-depilation.
Some machines use a lamp called xenon flash lamp that emits a spectrum of light (intense pulsed light or IPL).
Treatments with the lamp flash are sometimes referred to as laser hair removal but don't really have the results as laser.
The basic principle of laser hair removal is the "selective thermolysis". The laser causes damage in localized areas by burning and emitting black hair without burning the rest of the skin. The light is absorbed by the black areas called chromophores.
The laser hair removal targets melanin mainly. There are two types of melanin: eumelanin (which gives black hair) and pheomelanine (which gives red hair, the color of Asian skin and freckles).
If the hair contains less melanin, the laser is less effective. It is for this reason that people with gray, red or blonde hair are not good indications for laser hair treatments.
On the other hand, if the skin contains more melanin, the chances are lower that the laser can make the difference between the skin and hair.
For this reason, black people can not use this technique.
A light skin and dark hair is the best combination for laser removal.
For other photo types, the only solution is the electric depilation.
Laser technology is used for a growing number of beauty treatments including hair removal, the relissage of the skin to reduce wrinkles or treat scars caused by acne, removing blemishes and pigment processing vascular lesions. It also uses laser to remove tattoos.
If you plan to use one of these techniques, it is important that you examine the risks and potential benefits.
The hazards and the effects of laser hair treatment:
Even when the laser is chosen for a given treatment, there is a risk of temporary as an immediate pain, reddening of the skin, bruising and swelling. Some lasers are equipped with cooling devices to reduce the risk.
Other side effects may also occur as the formation of blisters, burns and infection. In some cases the skin may become lighter or darker, but these complications are rarely permanent.
If the laser is not well chosen or that the technique is not well done, the results could not be obtained and a permanent scar may form. There is also a risk of eye damage if you do not protect adequately the eyes during the laser treatment.
For hair removal, the laser targets the melanin of the hair follicle. For the reduction of wrinkles and the treatment of scars caused by acne, the target device damages the cells that are near the surface of the skin. The results are similar to the tightening of the skin obtained with conventional techniques for relissage of the skin, such as chemical peeling and mechanical abrasion.
The main side effect is the risk of burns if you are tanned when the laser heats the surface area of skin rich in melanin. That is why it is not right to follow the laser treatment sessions without sun protection.
Our advice to limit the dangers of your laser hair removal:
o Make sure that the person operating the laser has the training and experience required for the efficient and safe removal.
o If you use laser hair removal, no tan before and after treatment.
o Make sure you protect your eyes, and ask questions about cooling the skin during laser treatments.
o Make the right choice of hair removal according to your skin and the area.
o Check the wavelength of the beam of energy that targets the tissue and the power setting of the device.
This technique is also not recommended for people with hormonal imbalance.
The results of laser treatments are not guaranteed:
The aesthetic laser techniques can be costly and you may be disappointed with the result if you are not a good candidate or if you have unrealistic expectations. For example, hair removal is more effective in people who have fair skin and dark hairs. This technique is not so effective in people with blonde, red, gray or white hair or the ones with dark skin. Most people must pay for multiple sessions to get good results. According to the operator and the type of laser used, the hair removal could be permanent (30%), but there is no guarantee that the technique will work for everyone or all parts of the body.
Author presents information on range of products like ultra hair away, ingrow go, hair inhibitor solutions and other permanent hair removal products like the rio scan laser to get the desired results in the privacy of home along with the valuable tips to remove unwanted hair.
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It will save a lot of time and effort if you determine the type of laser you need for your application before shopping around. This article will lead you through the "mysteries" of lasers to your final selection. We will not go through the technical theories of how a laser works, but what lasers are used for what applications. We will determine the proper choices for Marking, Engraving, Cutting, Welding, and Scribing.
There are many types of lasers, each having different characteristics and differing interactions with various materials. We need to know the lasers output wavelength, average power, peak power, pulse rate, beam quality, and beam size. It will also help us to understand the conversion efficiency and consumable requirements of a particular laser to evaluate the operating cost.
The following are the various types of lasers we will be considering for the applications I mentioned above:
The CO2 Laser, with a wavelength of 10,600 nm (nanometers), reacts best with organic materials, wood, plastic, paper, glass and fabrics but can be used for metal applications at the higher power levels. With output power levels from 10-Watts to 25-Kilowatts, these lasers can be used for marking, engraving, cutting, welding and scribing. Metals are very reflective to the wavelength of CO2 Lasers and they do not work well for marking metals due to the lower power levels required for marking. CO2 Lasers can operate in the continuous wave (CW) mode or a pulsed mode. However, the peak power in the pulse mode generally never exceeds twice the CW power.
The latest CO2 lasers, 10-watts to 500-watts are generally RF excited diffusion cooled and sealed units. 10-100-watt CO2 lasers are air cooled and water cooled at power levels above 100-watts. With the water cooling requirement, a refrigerated water chiller is generally necessary. A CO2 laser is approximately 10% efficient, so 90% of the input power is dissipated in heat that needs to be removed from the laser by either air or water cooling, thus further decreasing the wall plug efficiency. At power levels over 500-watts, CO2 lasers need to be provided with a laser make-up gas (the lasing medium) to maintain the output power level of the laser. This make-up gas is a consumable and adds to the operating cost. The sealed lower power CO2 lasers generally can last 3 to 5 years before needing to be recharged with gas.
The "Q" Switched Nd:YAG or Vanadate Laser with a wavelength of 1,060 nm is best used for marking and scribing applications. These lasers react well with metals, ceramics, and plastics for marking applications. The average output power levels of these lasers generally range from 5-watts to 100-watts, and the newer units are diode pumped (excited) rather than flash lamp pumped. The unique feature of this Nd:YAG laser is the "Q" Switch which turns the laser beam on and off at frequencies from 1 kHz to 50 kHz.
On the off cycle, the diodes continue to pump energy into the laser crystal so that when the beam is turned on again it releases a very high peak power pulse in the multi-kilowatt range. This high peak power pulse quickly breaks down the surface of the material being marked and virtually vaporizes it. These higher power pulses also help in producing a contrasting color when marking plastics.
The Diode Pumped Nd:YAG lasers are generally water cooled via small refrigerated chillers to maintain laser output power stability and cool the diodes and laser rod. The solid state Nd:YAG or Vanadate laser rod (crystal) is the lasing medium and will last indefinitely if cared for properly. The laser pumping diodes will generally last from 10,000 to 20,000 hours before replacement is required. The most frequent maintenance required is a change of water, water filter, and anti-algae compound in the closed loop refrigerated chiller's water circuit every 3 months. Laser optics will also have to be cleaned periodically.
The "Q" Switched Nd:YAG and Vanadate lasers can also be frequency doubled to 532 nm (green), frequency tripled to 355 nm (ultraviolet), and frequency quadrupled to 266 nm (deep ultraviolet). The shorter the wavelength the smaller the spot size that the laser beam can be focused to. However, for each conversion to a shorter wavelength, the laser power is significantly decreased and the laser price tag is significantly increased. These shorter wavelengths are generally needed when processing micro-electronic devices that require the finest detail or resolution that can be achieved.
The Pulsed Nd:YAG Laser with a wavelength of 1,060 nm is suited to intricate metal welding, cutting, and drilling applications. The average power level of these lasers range from 15-watts to 600-watts and are flash lamp pumped. The pulse rates are generally 1 to 25 pulses per second for lasers with power levels up to 50-watts and 1 to 1000 pulses per second for the highest power lasers. The main feature of the Pulsed Nd:YAG laser is its high energy per pulse which can be up to 80 joules for the highest power laser. This laser functions by using overlapping precisely controlled laser pulses to control the progression of the cut or weld, and in the case of drilling several pulses can be delivered in the same location. For cutting and drilling applications, a high pressure small orifice coaxial gas assist nozzle is used to help remove the molten material from the cut path or drill hole. In the case of welding, a larger orifice lower pressure coaxial nozzle is used to deliver a blanket of inert gas cover to the molten weld area to prevent oxidation.
Because the Pulsed Nd:YAG laser uses a broad spectrum flash lamp for laser pumping (excitation), it is fairly inefficient at converting the electrical input power to laser power. It has an efficiency of approximately 3%. These lasers are water cooled at the low end via air/water heat exchangers and at the higher power levels by refrigerated chillers. The flash lamps require changing every 500 to 1000 hours of operation. Higher maintenance costs are associated with changing flash lamps, aligning and cleaning optics, and maintaining the water purity in the closed loop chiller systems. All of this said, it is still the only laser that can be used for certain applications.
The Fiber Laser, with a wavelength of 1,060 nm, is the newest laser on the block. It is diode pumped and has power output levels from 5-watts to 10 plus kilowatts. From 5 to 20-watts, it can be "Q" switched for marking and scribing applications including plastics. At the higher power CW mode of operation, it can be used very effectively for metal cutting and welding applications. The beam quality of the Fiber laser is generally better than other 1,060 nm lasers so it will process parts faster for any given power level. The laser beam is delivered to the work piece via small diameter fiber cable with a focusing head so it is very flexible when trying to fit it into tight quarters or moving the laser beam at high speeds on an X-Y-Z Axis Gantry System. One laser can also share its laser beam with several workstations by switching the beam from one fiber optic cable to another.
The Fiber laser has a wall plug efficiency of nearly 30%. This means it will take the least amount of electrical power to operate for any given power level. Pump diode lifetimes in excess of 100,000 hours are projected. This is truly a maintenance free laser. Fiber lasers from 5-watts to 100-watts are air cooled and over 100-watts are water cooled. Because of the higher efficiency of the fiber laser, the refrigerated chiller size can be smaller than other types of lasers operating at similar power levels.
Cutting, Welding and Marking capabilities of the several laser types mentioned above:
1. Low power CO2 lasers are used for marking and engraving wood, plastic, paper, fabric, and other organic materials. These lasers can also cut paper and wood up to 1/8" thick.
2. High power CO2 lasers are used to cut wood up to 2" thick and steel up to 5/8" thick. They can also weld steel up to 1/2" thick.
3. "Q" switched Nd:YAG and Vanadate lasers are used for marking and scribing metals, plastics, ceramics and other dense materials.
4. Pulsed Nd:YAG lasers are used for intricate cutting and welding applications and also used for hermetically sealing small electronic device enclosures and medical implant devices. They can also be used for the intricate cutting of blood vessel stents. Other higher power applications include the drilling of cooling holes in high temperature turbine engine blades and vanes.
5. Low power "Q" Switched Fiber lasers are used for marking metals and plastics. They can also be used to scribe solar cells and ceramic materials.
6. High power Fiber lasers are used to cut and weld metals. They can cut metals up to 1" thick and weld metals up to 5/8" thick.
There are many other applications that these lasers can be used for other than the ones listed above. You should now be prepared to approach either a laser manufacturer or laser systems manufacturer that produces the laser type you feel would be required for your application. Most all manufacturers will process evaluation samples at no charge to verify the results you are looking for. Other information that they will need is your desired production rate, your part handling preferences, and automation required.
Robert Holland is the Technical Advisor for allthelasers .com. Allthelasers.com is a depository for information and links to help users find the appropriate laser systems and component vendors to fill their laser requirements. Mr. Holland has held various laser related management, engineering, and sales positions for laser and laser systems manufacturers since entering the industry in 1972. He has a thorough knowledge of industrial high production laser systems and their applications.
Visit Laser Marking [http://www.allthelasers.com] or call (386) 232-4186
© 2006 by allthelasers.com. Free for unlimited distribution as long as this copyright notice and link to web site are in place.
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For a website to be successful, one of the most important things it needs to have a lot of is traffic. Traffic basically just means the number of people who view your site. It is pretty obvious to figure out that the traffic you have coming into your site will ultimately determine the success of your site; the more traffic coming in, the more money there is to be made. However, it can sometimes prove to be quite tricky to get more traffic; complicated methods are sometimes needed to do this. This is when most people implement the aid of an SEO company to ultimately help improve traffic.
The basic goal of an SEO company is to help your website become as prominent as possible by implementing methods to help your site rank high among search engines, hence the elongated meaning of SEO; which is "Search Engine Optimization." SEO companies have grown quite a bit and are becoming more and more popular, which also means there are going to be SEO companies out there that are better than others. This is causing a lot of people to ask, "What should I look for before choosing an SEO company?"
The first and most obvious thing to look for is the use of white hat methods. While that is a general rule of thumb, there are actually quite a few companies (some legit, others not) that will implement black hat SEO methods rather than white hat methods. Black hat methods will work and increase your search engine ranking, but there is no telling as to how long these methods will work as they are more deceptive and go against search engine guidelines. Once a website is found by a search engine, which has been using black hat SEO methods, that website could potentially be banned. White hat SEO methods comply with all of the guidelines put forth by search engines and can rightfully get you in the search engine rankings.
No SEO company can guarantee a certain ranking within search engines, so it would most likely be a better idea to avoid SEO companies that guarantee a specific ranking. It could happen that an SEO company gets your website within a certain rank, but it is never guaranteed. That company may get your website within a specific rank with less popular search engines rather than the most popular ones. Also, be on the lookout for SEO companies that use the term "auto-submit." Basically what that means is that they will spam your website and nobody likes spam, so it would be a good idea to steer clear of that.
The most obvious thing to keep in mind (that also applies to most aspects in like) is the term, "You get what you pay for." This seems to be the case with SEO companies as well, if the company offers their SEO services at an extremely low price, then you probably should not expect too much in the way of results. SEO companies that charge a higher rate will usually produce better results; this does not mean you have to find the most expensive SEO company out there, just certainly not the cheapest one. If you keep that along with the rest of the previously stated information, then you should end up utilizing the services of an excellent SEO company.
For more information on Dc Seo please visit
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SEO is the only way to become popular and successful online and to get success in any online business. Hence, bloggers and webmasters are trying hard to develop new SEO strategies each day and to improve their current SEO strategies as well. Those online business owners and bloggers who understands the importance of SEO for their online business but do not have enough SEO knowledge or experience, are hiring the SEO consultant or SEO firm to work for them.
However, selecting good SEO company or hiring some one for your all SEO need is not the solution if you are not much aware of SEO strategies and latest internet marketing facts. For example do you know the following internet marketing facts?
SEO strategies are continuously changing with time, so those strategies working best in past may not work in present time or may also harm your overall SEO.
Some SEO strategies being said as best by SEO companies are just waste of the time and may only result in very poor link-profile.
SEO is not the bread butter that you just achieve and eat. It is life long process and requires too much dedication and effort to well maintain your website ranking.
Why you must be aware of SEO strategies?
SEO firms generally offers very attractive SEO packages like
Thousand backlinks just for few dollars.
Article directory submission to hundreds of directories.
Blog comment to hundreds of similar niche blog.
Thousands of social media bookmarking and profile backlinks etc...
According to SEO experts all the above strategies are not much of useful and may lead to waste of your time and money, infect the best and genuine SEO company will offer you some thing like
Quality Content writing in your niche.
Manual Article submission to high PR directories.
On page optimization and keyword analysis.
How SEO Company may make you believe that they done enough for what you paid?
Generally, SEO Company will show their SEO results by showing numbers of backlinks to your site in Google webmaster tools or some other similar SEO analysis tool or they will give you the report containing the links to where they submitted your content or bookmarked your link. But you might not know that Thousands of useless backlinks can be easily generated with link building farms and automated directory submission. Most of the time all these will be considered as SPAM, and you will never come to know about it.
Some company uses latest black hat SEO strategies to make you rank higher in Google and will show you instant results in Google search engine also, but those black has SEO strategies are for instant only, you will soon get harmed from them and your link will again drop down after few months or few weeks.
Learn Your self SEO Strategies and become expert in how to Make Money Online blogging.
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Getting full-service SEO packages is no joke; with prices ranging from $150 to $1,500 per month, it's a significant investment to make for your website. The definition for 'full-service SEO package,' however, can vary as much as its price. Different SEO companies include different services and guarantees in their respective packages. There are, however, certain SEO techniques that no Internet marketing package should go without.
Pre-Analysis: Planning for the Campaign
Although you could just get any set of services at random, packages from real professional SEO companies usually include some pre-analysis. That group of services usually answers questions that are critical to your SEO project such as
o How popular is your site? How popular could your site be?
o Who are your primary competitors? Do they have an advantage with regard to SEO?
o Do you have marketing advantages that aren't being maximized?
o Are your goals realistic? What's necessary to achieve them? How long will that take?
It might seem like answering these questions would merely be a minor quibble, but it will set the path that your project will take. These services are very important if you're serious about achieving a certain goal with your site.
On-Site Analysis: Maximizing What's There
Now, it's possible that your site already has certain marketing content that you're just not maximizing. You should ask for these services because they could turn that existing content into big assets for your SEO project. This group of SEO services usually includes
o Creation of meta tags in your site's HTML code
o Editing of robot.txt files for best search engine results
o Creation of XML sitemaps for better crawling by search spiders
Because these services require a high level of expertise, not all service providers manage to provide them. The SEO package you eventually get, however, should include all these items to achieve maximum impact.
Off-Site Marketing: The Meat of the Matter
Central to all SEO packages are the off-site marketing techniques, which form the core of most Internet marketing projects. That's because these SEO strategies will address multiple areas of your marketing scheme. Off-site marketing often includes things like
o Writing a number of unique articles and then manually submitting them to top article sites
o Submission of your site's URL to various web directories, known as manual directory submissions
o Contextual link building with the use of niche blogs or hub pages
o SEO Copywriting for improved search engine crawling and conversion
o Making some guest posts at popular blogs of your niche. It'd brand your business and website while giving you quality backlinks.
o Advertising in related niche forums
o Link bait articles - These articles are written on hot concepts related to your niche and industry. They're usually picked up by various publishers and this helps you increase your link popularity.
You'll notice that the products in this group of services will interact not just with the search engines, but also directly with your market and site visitors. Aside from explicitly looking for these same services, you should also make sure to get them from a well-established, quality-conscious professional SEO company.
Updates and Support: The Invisible Factor
While this group can't exactly be called SEO services, they're just as important once your project begins. Regular updates and progress reports will help you gauge how well your project is going, if additional components are necessary or if certain things have already become superfluous. Some of the questions you should ask SEO companies are
o How often will they update you, and through what means?
o How and when can you ask for additional support once the project starts?
o Will the company give you reports, breakdowns and detailed analyses of your project progress?
These value-added services will make it easier for you to keep track of your project and keep your project on track. You should always ask about what each company offers in this category because only the really good companies can offer you thorough services in this respect.
When you canvass for a full-service SEO package for your site, look for all the services listed above. That way, you'll be getting the most out of your investment and making sure that you're really getting a full set of SEO services.
Sunita Biddu is an internet marketer and successfully running professional SEO and marketing company that offers powerful contextual link building service, unique article marketing service, and full-service SEO packages to help website owners achieve top search engine rankings. She is the CEO of copywriting company Content Axis, Inc. that provides premium quality copywriting services. While providing top rate and affordable SEO services, she also writes helpful guides on powerful yet ethical SEO strategies. To know more about the services, spare few minutes at SEO-Peace.com
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