The purpose of using single purpose credit card

The single purpose credit card is a credit card that can be used in only one store, since these cards have limited usage.

These credit cards are given by the stores. This credit cannot be used at any other store. But, if a store has a chain or of other stores, the card can be used in other stores.

Many departmental stores and gas chains issue such credit cards

Examples: Few companies that offer a single purpose credit card are:

  • Kohl’s
  • Home Depot
  • BP
  • Shell
  • JC Penney
  • Macy’s
  • Gap
  • Old Navy

Rate of Interest of Single purpose credit card

The nature of paying interest is similar to the regular credit cards. The only difference is that this card cannot be used in any and every store. These credit cards offered by the stores make shopping easier and tempting, firstly, by giving goods on credit and secondly, by offering various discount schemes, for those who use the card. Often the interest rates charged on ‘single purpose credit cards’ are more than the ‘general purpose credit cards’. This is how the companies make their profit.

Advantages to the Store

  • Increased Sales: Customers using single purpose credit cards do not have to pay for the purchase, each time they go shopping.
  • Prevents Consumer Flight: Customers are attracted to the discount schemes and they prefer buying from this store only.
  • Increased Profits: With the increase of the sale of the goods the store makes good profit.
  • Reduced Losses: As the store gets the scope of selecting goods as per their consumers taste, this reduces the chances of losses even when goods are sold on credit.

Advantages to the Consumer

  • Schemes and Discounts: They can avail discounts and schemes.
  • In Times of Cash Crunch: If he is out of money, he can use the card and purchase whatever he wants.

Polymer batteries for next-generation electronics


Scientists from the University of Leeds believe that there is a new kind of polymer gel which can be used in order get a good performance from the rechargeable lithium batteries, without cutting down on performance.

Ian Wards FRS, a Physics professor at the University of Leeds has had developed a technology which includes the new polymer gel, and this has been licensed to the American company, Polystor Energy Corporation, that is now testing the batteries in order to figure out which how they can use this technology in the commercialization of cells, which can be used in the portable consumer electronics.

Professor Ward says that this gel can easily replace the liquid electrolytes which are currently used in the rechargeable lithium cells. Also the gel can be made into a thin film by fully automating a process which is fast, efficient and has a low cost as well.

Lots of portable consumer devices are laptops, digital cameras, MP3 players and mobile phones swear by the use of rechargeable lithium-ion batteries these days. The tradition batteries of this variety usually have a porous polymer film separator plus liquid chemical filler. This allows the lithium ion carrying charges to flow the power easily, as well as be a barrier to stop short circuiting.

The new polymer gel that been developed does not need this separator, says Ian Wards. They come up with patented manufacturing process called extrusion/lamination where it is kept between an anode and a cathode at the speed of ten m per minute. This makes it highly conductive strip which is only nanometers thick.

The polymer film which comes from this can be cut down into any required size, and this brings about the fully-automated process, that is cost effective and safe as well. The lamination fixes these electrodes together, thereby eliminating any chances inflammation by the liquid electrolyte and flammable solvent.

The polymer gel is going to be one of its kinds, we are told. Even though it looks like a gel, Ian Wards says, it is really 70% liquid, for it is used with the same principle of making a jelly. Here’s hoping the test results come out positive.

Can you extend the battery life of your Android set when its basically very low?

You feel disappointed when your phone suddenly runs out of battery charge and you can’t contact anyone. Don’t’ be sad, to avoid such an unexpected situation to arrive you may take a little more care about your phone before living home. Just follow some simple tips and your phone work for long hours

How to stretch the phone battery?

  • Just when you see that you are left with only 10% of the battery power, start conserving power immediately. Just power down your phone and periodically switch it on for checking messages and emails. Turn of as many power eating services you can, such as stop, Wi-Fi, GPRS, 3G and VoIP services such as Skype. Turn off as many as you can.
  • Some power eating applications can also be running in the background and it might be not in your knowledge. Touch all the running applications you don’t need running. Many are auto-update apps such as Facebook, email, Twitter, RSS readers and instant messengers.
  • Large touch screens also eat up lot of power for performing. Reduce the brightness of the screen as much as you can, reduce it to dim and this will help in power consumption.
  • And when you are using an Android phone and you will have to use your phone as a modem, just do it by tethering it to the laptop with the USB cable. It still uses a fair share of battery but considerably less than the hotspot.

Condition Your Battery for Longer Life

Use rechargeable batteries as they can last long. One of the best ways to do this is to reduce the battery once every month. Do this by using the phone heavily. Leave loads of apps running and even leave the media player on along with the GPS and 3G. This heavy usage will condition your battery for heavy use.

PVDF Belt :converts air flow from human breath into electricity

American researchers are always curious to know more to invent better devices. Recently, they have made an electronic apparatus which can turn the breathable air into electricity. Human respiration process can be recycled to generate electricity which will be used to power the biomedical devices. There is no necessity of the plantation of ion batteries to activate the biomedical devices. This ultra modern electricity generating unit is much more eco-friendly and functional.

Xudong Wang, the well known researcher at University of Wisconsin-Madison, has made an attempt to upgrade this device to produce electricity using the air flow which ensures respiration process of humans.

It is important to note that humans conduct respiration in slow but steadfast way. The air flow rate is generally low. However if one installs this nano-scale medical device to generate energy, he will be able to provide energy/electricity to the small biomedical devices.

Xudong’s research team has manufactured PVDF belt which is more flexible, dynamic and being capable of harvesting energy making proper usage of airflow. PVDF belt will have an excellent operating system.

If the PVDF belt is invented and launched into the market successfully, there will be no necessity of plantation of any lithium battery into the biomedical devices. This energy efficient belt will gear up the electricity for the activation of power generating belts. You will have better options to generate power. Even according to experts, it will not be difficult to power the musical infotainment using this power generating unit. However, still experiment is on to upgrade the power belt using more user-friendly technology.

Masao Kaneko who is a researcher at the institute of Biophotochemonics located in Japan claims that in medical science, this type of biomedical belt will come handy to lessen the expenses to some extent. Human respiration will be properly recycled to waste breathable air for the production of eco-friendly energy which is not detrimental to the health of humans.

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