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Best Air Purifiers

Picking the best air purifier is a very difficult decision since the need of each allergy or asthma situation has different needs.  Adding to this tough task is different allergens and different types of home pollutions are removed in different ways.  Below are some comparisons of some of the more popular type of air purifiers.

Air Purifiers with HEPA (High Energy Particle Arresting) filters were originally developed for the atomic energy commission and are used in commercial clean rooms to remove particles of dust and other airborne pollution. This is a paper or polymer sheet with very tiny holes that allow airflow to pass though the material but not very much else. The holes are so small you need a lot of surface area for a reasonable amount of airflow to pass though the material.  It is because of this that the medium is always folded in an accordion or zigzag fashion to get a lot of surface area in a small area. There is also a mixed version of the technology that one manufacturer uses where the holes in the HEPA filter are slightly larger to promote more airflow but the air is charged with electrostatic wands.  Which then attracts any of the smaller particles that get thru the holes. HEPA Filters work well in the home for trapping particulates.  The disadvantage is that the filters must be changed regularly (every 6-months to 5-years depending on the manufacturer).  Before purchasing you would also want to review how much air by-passes the filter, fan noise, how long the filter is good for and finally price of both original unit and replacement filters.  The review of any HEPA unit depends on the efficiency (how much air by-passes the filter), fan noise, filter life and price.

UV air purifiers use ultraviolet light.  Ultraviolet light in the right intensity destroys the DNA of microorganisms such as bacteria and viruses.   The disadvantage of a UV air purifier is that removes very few gas pollutants and no air particles.  It would be necessary then to purchase a UV air purifier along with another type or one that combines with another filter system.

Ion Generator Air Purifiers are small air purifier devices that put out a stream of negatively charged Ions.  These ions charge particulate pollution and when the particle bumps up against something it sticks due to the electronic charge.  These devices are used on US submarines and in the poultry industry to keep the feather dust down.
These air purifiers do what they say but there are some very distinct disadvantages.  Particulates end up on your walls so your walls turn black near the device.  Secondly, since they typically do not have a fan they only work in a localized area.  They also do nothing for gas pollution and some may put off some dangerous Ozone.

You can see just with the 3 examples above there are differences in air purifiers.  Research and comparison shopping is necessary to find the right purifier for your specific case.  Do not allow promotional hype to sway your judgment, picking the wrong air purifier is as bad as not having one at all.

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Wish For Bangladesh

Wish For Bangladesh

Bangladesh Informations

Bangladesh emerged as an independent and sovereign country in 1971 following a ninemonth war of liberation. It is one of the largest deltas of the world with a total area of 147,570 sq. km. With a unique communal harmony, Bangladesh has a population of about 142 million, making it one of the densely populated countries of the world. The majority (about 88%) of the people are Muslim. Over 98% of the people speak in Bangla. English, however, is widely spoken. The country is covered with a network of rivers and canals forming a maze of interconnecting channels.
Bangladesh has a glorious history and rich heritage. Once it was known as ‘Sonar Bangla’ or the Golden Bengal. The territory now constituting Bangladesh was under the Muslim rule for over five and a half centuries from 1201 to 1757 AD. Subsequently, it came under the British rule following the defeat of the sovereign ruler, Nawab Sirajuddaula, at the battle of Palassey on 23 June, 1757. The British ruled over the Indian sub-continent including this territory for nearly 190 years from 1757 to 1947. During that period, Bangladesh was a part of the British Indian provinces of Bengal and Assam. With the termination of British rule in August 1947, the sub-continent was partitioned into India and Pakistan. Bangladesh formed a part of Pakistan and was called ‘East Pakistan’. It remained so for about 24 years from August 14, 1947 to March 25, 1971. Bangladesh liberated on December 16, 1971 following the victory of the War of Liberation and appeared on the world map as an independent and sovereign country.The country is the pioneer in micro-credit concept for poverty reduction, which brought the Nobel Prize in Peace for the country in 2006. The founder of world reputed Grameen Bank Professor Dr. Muhammad Yunus is the Nobel laureate.

The Natural Beauty Of Bangladesh

Have you thought of a dream holiday where you see yourself on that very attractive magical coastline with very beautiful features like those in the fairy tales? Did you know that such features really exist on this very planet?

Talking of wonderful eye-catching sites let us take a trip to the North Eastern part of south Asia and land safely in one of the most beautiful countries on the planet: Bangladesh. The country is surrounded by some of the most prominent geographical features studied worldwide. To the north of Bangladesh are the famous Himalayas while the bay of the Bengal borders her from the South. To her East is the hilly region of Tripura, India and Myanmar. Finally to her West lies the west Bengal. Together these features form a low lying plain in between that is the country in their midst; Bangladesh.

The plain between all these features has plenty of rivers flowing across it forming a nice natural beautiful pattern of rivers and streams network. Padma, Meghna, Kamafull and Brahmaputra are the major rivers in this very beautiful land.

History goes hand in hand with the Natural Beauty of Bangladesh. Talking of historical sites she has quite a number of rich archeological sites to offer. This includes the Paharpur, Maianamati, Sonargaon among many others.

It also has a historical mosques and monuments. The sixty Dome mosque built in the 15th century is the largest historical in Bangladesh as well as the words heritage is situated in Bagerhat. It is also upheld for an outstanding architectural value. However, the Shait Gombuj mosque is the most magnificent and the largest brick mosque surviving in the country.

Bangladesh is not just named a natural beauty for nothing this is a title that it has fought for through its great and eye catching extraordinary features. She happens to be the home to the world's longest natural beach in the whole world. The land is mainly covered by plant cover as most of the people practice Agriculture.

Apart from the natural beauty of Bangladesh brought forth by the flora in the country, the country also has a great deal of wildlife. She is the home of the dhole; the most endangered Asiatic top predator that is on the edge of extinction. It also has the Asian elephant which is the largest mammal. Finally she has the Bengal tiger which is the national animal of the country. The next time you thinking of spending time in a beautiful place where you will be able to watch and appreciate nature's beauty, think of Bangladesh.