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Showing posts with label Development. Show all posts
Showing posts with label Development. Show all posts

Development of sealed lead-acid batteries

Written By anfaku01 on Monday, July 11, 2011 | 3:01 AM

The battery in one way or the other form, known in existence since 1800. But it was only in 1859, Gaston Plante prototype lead acid finally evolved into the modern sealed lead-acid batteries. For the first 100 years after the creation of PLANTE, he served as the sole source of power. During the 1920s popular electric cars were powered by lead acid units.

While the lead acid batteries were found to be inefficient, because the energy/unit was low, while only 0.03 kWh per kg. Although the original lead acid units were considered not suitable for the environment because of the presence of lead, further research led to the development of sealed lead-acid batteries. This is more environmentally friendly than glass bottles, tires, cans of beer and soft drink cans.

The construction of a sealed lead-acid batteries

Now they are used in many industries such as automobile engines, medical equipment, aviation, electronics, telecommunications, solar and garden equipment. These batteries are made of a combination of chemical ingredients which react with lead sheets placed in the body of the battery. The chemicals include calcium, lead, arsenic, sulfuric acid electrolyte, oxide of lead, Tin and lead sulfate.

Other components sealed lead acid batteries are batteries which has a flat safety vent high integrity Terminal printing, positive and negative plates, inner plastic container, retention, and lead the grid, enclosed in a metal can. These batteries are also lead wires, which are mainly copper wire with insulation and are encoded with the red and black colors. Lead wires have their tips, dipped in wax, but removes the wax before using them.

Advantages of sealed lead-acid batteries

Advantages of using sealed them, especially if they have a base, lead Tin chemical are as follows:

* There is a larger power these batteries per unit weight.

* The cycle life of these batteries range between 200 and 300.

* Waiting life sealed lead acid batteries may go up to 15 years.

* These batteries provide high stable voltage due to their low internal resistance. They also allow greater flexibility, because if there is a flat discharge, discharge and recharge times very quickly.

* Temperature range in which you can operate these batteries is significant, ranging from-60 ° C to + 80 degrees Celsius. Similarly, the atmospheric pressure range for transactions — a vacuum to 8 atmospheres.

* Added their quality, they are very tolerant of shock and vibration, reliable external construction.

* These batteries twice as ecologically as cans of beer; aluminum soft drink glass bottles, newspapers and tires because almost all battery lead is recycled.

Recent improvements in the production of iron batteries sealed lead the introduction of Li-ion technology, in which energy/weight ratio is almost 0.16 kW/kg. Electrolyte consists of lithium salt in an organic solvent. Although not very dangerous if handled properly lithium salts, they are difficult to recycle and their production is extremely carbon. Thus this method is not very favorable.

Significant changes have occurred in a sealed lead-acid batteries, and they are now used in many areas of industry. They are harmless to the environment because almost the entire lead content can be recycled.


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3:01 AM | 0 comments

Advance your career with online Web development courses

Written By anfaku01 on Friday, July 1, 2011 | 6:37 PM

Those who wish to eventually start a career in Web design or Web development significantly benefit from web development courses. These lessons teach the skills needed to develop in this vocation. Some of these capabilities include programming, design and marketing. So much of a student who is looking for a cross-cutting programme, covering technology and business can benefit from this training programme.

As this program has a great focus on computer technology, students who did well in computer courses in the past will take precedence. In addition, students who are interested in learning how the Internet works can have a key advantage in the completion of these courses and obtain career.

The future of Web designers and would like to take courses in web development, to be able to discover the skills needed to develop in the area. Most courses have programming such as Java, object oriented programming and Web development. These classes usually have a lot of project work. This is because it is not possible to know the material of remembering only. A lot of learning comes from actual coding.

The same is true of many courses design too. Nobody learns design, learning and memory. The training is given to design projects that can be quite time intensive as well. Students going to get into Web development needs to be ready to perform a great deal of work in the learning process.

Students have many options in view of the web design courses. Many community colleges have courses design in addition to relevant programming classes. These courses are normally offered University Bachelor's degree. So you can take some of these courses somewhere else and pass them as college credit towards a Web design or Web site design.

The main problem with these courses will be to determine whether or not they are equal to courses at degree granting institution. To optimize the probability to obtain recognition of transfer credit, the student should have the curriculum and coursework only if evidence of equivalency is required. Luckily programming and design courses are pretty similar from school to school, so no matter where are courses.

Whenever a student completes courses development web, it will be found many skills necessary to become get into web development career. First student can learn a lot of modern computer technologies such as Java, JavaScript, and CSS. In addition, the student will also acquire knowledge in the field of graphic design and Web too.

Among the most important things about this training programme is a significant part of the learning comes from practical projects, which are very similar to your work in the field. Many of the activities of the class are reminiscent of real projects, which will be very helpful to go to work.

Many technology courses in major universities are similar, but each principal definitely have their differences.  The best way to find out which major announce requires that you accept the course of development of web courses on information technology and computer science courses.  This will make it easy to pick up finally in a major.


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6:37 PM | 0 comments

Development of sealed lead-acid batteries

Written By anfaku01 on Thursday, June 23, 2011 | 1:12 AM

Batteries in one way or the other form, known in existence since 1800. But it was only in 1859, Gaston Plante has created a prototype lead acid, finally evolved into modern sealed lead-acid batteries. For the first 100 years after the creation of PLANTE, he served as the sole source of energy to the battery. During the 1920s popular electric cars were powered by lead acid units.

While the lead acid batteries were found to be inefficient, because the power/weight ratio was low, while only 0.03 kW/kg. Although the original lead acid units were considered not suitable for the environment because of the presence of lead, further investigation led to the development of sealed lead-acid batteries. It's better than glass bottles, tires, cans of beer and soft drink cans.

Construction of sealed lead-acid batteries

Currently they are used in many industries such as automobile engines, medical equipment, aviation, electronics, telecommunications, solar and garden equipment. These batteries are made from combinations of chemical ingredients which react with lead sheets that are placed inside a battery. The chemicals include lead, arsenic, sulfuric acid electrolyte, calcium oxide of lead, Tin and lead sulfate.

Other components sealed lead acid batteries are batteries which has a vent-security high integrity Terminal printing, positive and negative plates, inner plastic container, a separator, and holds the lead grid in metal can liners. These batteries are lead wires, which are basically turned out to be copper wire with insulation and are encoded with the red and black colors. Lead wires have their ends, dipped in wax, but before using the wax is removed.

Advantages of sealed lead-acid batteries

Advantages of using sealed them, especially if they have a base, lead tin chemicals are as follows:

* There is a larger power per unit weight of those batteries.

* The cycle life of these batteries range between 200 and 300.

* Waiting life sealed lead acid batteries may go up to 15 years.

* These batteries provide high stable voltage due to their low internal resistance. They also allow greater flexibility, because if there is a flat line in execution and recharge times very quickly.

* Temperature range in which you can operate these batteries is significant, ranging from-60 ° C to + 80 degrees Celsius. Similarly, the atmospheric pressure range for operations is vacuum in eight atmospheres.

* Added their quality, they are very tolerant, shock and vibration due to their rugged external design.

* These batteries, doubled, enabling both cans of beer; aluminum soft drink glass bottles, newspapers and tires, because almost all battery lead is recycled.

Latest development in iron production closed technology is rechargeable Li-ion, in which energy/weight ratio is almost 0.16 kW/kg. Electrolyte consists of lithium salt in an organic solvent. Although lithium salts, not very dangerous, if properly, they are difficult to recycle and their production is extremely carbon. Thus this method is not very favorable.

Significant changes have taken place in sealed lead-acid batteries, and they are now used in many industries. They are the environment, since almost the entire lead content may be disposed of.


View the original article here

1:12 AM | 0 comments

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