Archive for the 'Articles' category

Self Assembly Of Nano Fiber Gel

October 26, 2008 7:49 pm

This decade has faced all tremendous improvement in the field of science and technology and no doubt this is the best ever era of human life!! With so many innovative ideas and techniques popping up in the people’s mind, they trigger the scientist to make a new development every second is the base for such vast changes and developments in our life. Not only computers have made an impact on the people’s mind even the different branches in science and technology have found to have impressed people in order to make them live their life at more ease.

In such regard, nano technology is one main branch which has found to have got various dimensions with more people researching on it and working for its proper usage and development!! With this field emerging as a substitute and replacement to the ancient practices used till now, this has gained a lot of importance and is welcomed by all. Thus they are used in all field including the medical science where using this we could prepare many saving life drugs. Thus when we consider the nano fiber gel, it has been found out that the self assembly of the nano fiber gel has special properties by which it could release drugs which are nothing but the anti-inflammatory agents. They prevent the formation of inflammation in any part of the body and many researches are still in progress with respect to the self assembly of nano fiber gel.

The main aim of the research which is being undergone is that the amphiphilic molecules are formed from the drugs and these molecules are capable of self assemble leading to the elimination of other external carrier to deliver the drugs. Many leading specialists in United States are involved in this project of self assembly of nano fiber gel and they take rigorous efforts to make it successful!! Also other specialists say that the gel degradation takes place by triggering of the enzymes which plays a very vital role in delivering the drugs properly to the specified organ.

When we look at this self assembly of nano fiber gel in detail we would be able to realize that these gelling agents are involved in having a control in both the growth as well as the structure of the fiber networks. Choosing the proper solvent and also the conditions where the process is going to be held are major factors which are to be considered in any nano fiber field. When the assembly takes place, it results in a network which is three dimensional and also where the molecules are very stable and clear. Certain factors like the temperature, the arte of cooling are essential to be considered while considering the growth of nano fibers.

Thus to put everything in a nut shell, the self assembly of the nano fiber gel is one upcoming field which is under research and has the potential to create massive development in the field of health and medicines and also under proper working condition they are found to be very fruitful!‼

Cochlear Implants

September 3, 2008 1:54 pm

Cochlear implant is an electronic device used by a person to get the sense of a sound if he/she is profoundly deaf or has got difficulties in hearing or sensing sounds. This device is implanted surgically on human beings. Their functioning is different from that of the hearing aids. In the case of hearing aids, it only amplifies the sound in the surroundings. But cochlear implant stimulates the functioning of auditory nerves inside the cochlea, hence the name. This stimulation is done by the application of an electric pulse generated from an electric field. It is also known by other name, ‘bionic ear’.

The different external parts of this electronic device include RF transmitter, speech processor and a microphone. The important internal part is the RF receiver. This receiver is implanted under the skin of the skull.

When the external RF transmitter sends any signal to the RF receiver inside, the signal will be further transmitted into the electrodes which are implanted in the cochlea surgically. The level of sensitivity can be adjusted externally with the help of the speech processor provided.  The process of selective filtering of the sound is done by the speech processor. The sound from the environment is picked up with the help of the microphone provided externally. There will be about 22 electrodes arranged in the form of an array in the cochlea. These electrodes act as the carrier of electric impulse from the receiver to the nerves.

The transmitter consists of a coil which is held by the magnet. It is placed behind the ear. The receiver also contains a magnet. Thus there will be an attraction between the receiver and transmitter due to the presence of these magnets, which holds them together. The signals are transmitted by using the principle of electromagnetic induction. This device cannot help you to cure deafness or hearing impairment but can act as a substitute for hearing. Cochlea implant can be fixed only if there is presence of auditory nerve inside. By using this device individual can interact with people easily.

The person must remove the external equipment when he goes for a shower as it may damage the device or may be unsafe for the person. So, proper care must be taken while using the device. Cochlear implant is also used in cases of temporary hearing losses. People with mild hearing losses will not be recommended to use this device. Instead they can use the ordinary hearing aid.

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