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Topics - shahina

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33
Allied Health Science / Healthy Fluids
« on: March 13, 2016, 02:04:38 PM »

Staying hydrated helps us to improve your oxygen levels. Water molecules or H2O are made of two hydrogen atoms and one oxygen atom. Drinking enough water will help us to stay hydrated and increase the oxygen in blood.
Other fluids like FRESH JUICES AND SMOOTHIES might be a good choice. Because fresh fruits and vegetables are full of vitamins, minerals and antioxidants, juicing them can help us to  receive their benefits in a more easily digestible form.

34
Science Discussion Forum / Brains Cleans Toxins During Sleep
« on: March 13, 2016, 01:56:48 PM »

While the brain sleeps, it clears out harmful toxins, the flow of cerebrospinal fluid in the brain increases and washes away harmful waste proteins that build up between brain cells during waking hours.

The scientists noticed that during sleep, the system that circulates cerebrospinal fluid through the brain and nervous system pumps fluid into the brain and removes fluid from the brain in a very rapid pace. During sleep brain cells shrank, making it easier for fluid to circulate.
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Science Discussion Forum / 3D PRINTED ORGANS
« on: March 09, 2015, 11:33:23 AM »


3D printing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created. Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object.

Dying patients could someday receive a 3D-printed organ made from their own cells rather than wait on long lists for the short supply of organ transplants. Such a futuristic dream remains far from reality, but university labs and private companies have already taken the first careful steps by using 3D-printing technology to build tiny chunks of organs.

Regenerative medicine has already implanted lab-grown skin, tracheas and bladders into patients — body parts grown slowly through a combination of artificial scaffolds and living human cells. By comparison, 3D-printing technology offers both greater speed and computer-guided precision in printing living cells layer by layer to make replacement skin, body parts and perhaps eventually organs such as hearts, livers and kidneys.

36
Nutrition and Food Engineering / MASHROOM RECIPE
« on: March 09, 2015, 11:25:40 AM »
MASHROOM RECIPE

Nowadays mashrooms are available in our country. Fresh and dried both forms are available in the superstores.
We can use these in noodles, soups or making gravy. Here a recipe is given for gravy.

1. Heat the butter in a large frying pan. Add mushrooms  and season with salt and pepper. Cook, until the mushrooms are slightly browned and soft.

2. Reduce the heat to medium, sprinkle in the flour, and stir to coat the mushrooms. Cook, stirring occasionally, until the flour is lightly toasted, about 3 minutes.

3. Slowly pour in CHICKEN stock  until smooth. Bring to a boil and cook, stirring occasionally.

4. Then blend  IN blender. Taste and season with salt and pepper as needed.

37
Science Discussion Forum / LAB GROWN CORNEA
« on: March 09, 2015, 11:04:50 AM »
Artificial corneas grown in the laboratory have been transplanted into patient's eyes for the first time in an operation in the year 2010 that offers hope to millions of partially sighted people.

The new technique involves growing human tissue or collagen in the laboratory and then shaping it using a contact lens mould. Damaged and scarred tissue from the front of the eye is then removed and the "biosynthetic" replacement is stitched in its place. Eventually existing cells and nerves in the eye grow over the artificial cornea incorporating it fully into the eye.

The first trials of the operation have shown that it is just as successful as live tissue transplantation and in some cases patients have had their sight fully restored.

38
Science Discussion Forum / Bionic Vision
« on: March 09, 2015, 10:53:29 AM »


The bionic vision system consists of a camera, attached to a pair of glasses, which transmits high-frequency radio signals to a microchip implanted in the eye. Electrodes on the implanted chip convert these signals into electrical impulses to stimulate cells in the retina that connect to the optic nerve. These impulses are then passed down along the optic nerve to the vision processing centres of the brain, where they are interpreted as an image.

To benefit from this technology, patients need to have a functional visual pathway from the retina to the brain along the optic nerve, as well as some intact retinal cells. As such, the two medical conditions that this technology aims to address are retinitis pigmentosa and age-related macular degeneration.

39
Science Discussion Forum / PLAQUE AND CAVITIES
« on: March 09, 2015, 10:34:55 AM »


We have lot of bacterias in our mouth which is a normal thing. While some of the bacteria can be harmful, most are not and some are even helpful.

Certain types of bacteria, however, can attach themselves to hard surfaces like the enamel that covers teeth. If they’re not removed, they multiply and grow in number until a colony forms. More bacteria of different types attach to the colony already growing on the tooth enamel. Proteins that are present in saliva (spit) also mix in and the bacteria colony becomes a whitish film on the tooth.This film is called plaque, and it’s what causes cavities.

The plaque that forms on  teeth and doesn’t get washed away by saliva or brushed away by toothbrush produces acid as it eats up sugar. This acid is produced inside the plaque and can’t be easily washed away by saliva. The acid dissolves the minerals that make tooth enamel hard. The surface of the enamel becomes porous – tiny holes appear. After a while, the acid causes the tiny holes in the enamel to get bigger until one large hole appears. This is a cavity.

40
Science Discussion Forum / Teeth inflammation
« on: March 09, 2015, 10:20:25 AM »

Root canal treatment, is needed when tooth pulp as shown in attached figure becomes inflamed or infected. The causes could be deep tooth decay, repeated dental procedures on one tooth (replacing a large filling, for example), or traumatic damage such as a crack, chip or even a root fracture. Gum disease can also give rise to root canal problems necessitating root canal treatment.

Any of these issues can result in acute inflammation of the pulp, which causes swelling and pressure inside the tooth, leading to tooth pain and, eventually, irreversible damage to the pulp. Once the pulp dies, the pain may subside initially, sometimes to return as an painful infection spreading into the periapical tissues, particularly the bone. It could also become a chronic (long-standing) infection with symptoms ranging from mild to severe.

41
Science Discussion Forum / Why Does Tooth Pulp Need to Be Removed?
« on: March 09, 2015, 10:10:06 AM »



When a tooth's nerve tissue or pulp is damaged, it breaks down and bacteria begin to multiply within the pulp chamber. The bacteria and other decayed debris can cause an infection or abscessed tooth. An abscess is a pus-filled pocket that forms at the end of the roots of the tooth. An abscess occurs when the infection spreads all the way past the ends of the roots of the tooth. In addition to an abscess, an infection in the root canal of a tooth can cause:

Swelling that may spread to other areas of the face, neck, or head
Bone loss around the tip of the root
Drainage problems extending outward from the root. A hole can occur through the side of the tooth with drainage into the gums or through the cheek with drainage into the skin.

42
Science Discussion Forum / What is a Root Canal?
« on: March 09, 2015, 10:06:10 AM »

What is a Root Canal?

 A root canal is a treatment used to repair and save a tooth that is badly decayed or becomes infected. During a root canal procedure, the nerve and pulp are removed and the inside of the tooth is cleaned and sealed. Without treatment, the tissue surrounding the tooth will become infected and abscesses may form.

"Root canal" is the term used to describe the natural cavity within the center of the tooth. The pulp or pulp chamber is the soft area within the root canal. The tooth's nerve lies within the root canal.

A tooth's nerve is not vitally important to a tooth's health and function after the tooth has emerged through the gums. Its only function is sensory -- to provide the sensation of hot or cold. The presence or absence of a nerve will not affect the day-to-day functioning of the tooth.


43
Science Discussion Forum / Sensitive Teeth and LASER
« on: March 09, 2015, 09:51:37 AM »

Sensitive Teeth and Fluoride Treatments

Lasers can help people who suffer from sensitive teeth. When combined with a fluoride treatment, certain dental lasers can reduce sensitivity for up to 12 months. The effectiveness of this treatment depends on the type of laser used, and varies according to each individual patient.

Dental lasers assist in the uptake of fluoride within teeth. These enhanced laser fluoride treatments are longer lasting and provide better protection for your teeth against decay.

44
Science Discussion Forum / PHOTO-ACTIVATED DISINFECTION
« on: March 09, 2015, 09:49:24 AM »


PHOTO-ACTIVATED DISINFECTION

Dental lasers are very good at targeting the bacteria which cause gum disease. A quick laser treatment can be very effective in treating gum disease and promoting healing. The same applies to infected root canals. Dental lasers can be used to control infection and promote accelerated healing.

A laser is used to activate a solution that kills oral bacteria and can help deliver minimally-invasive procedures.

45
Science Discussion Forum / DENTAL FEELING WITH LASER
« on: March 09, 2015, 09:46:46 AM »


The greatest benefit of laser fillings is that needles and drills are usually not required! This means no more high-pitched drilling noises and no more numb lips. Occasionally, a laser dentist will need to use a drill – for instance to remove amalgam. Also, a needle may sometimes be necessary for some patients, especially those with highly sensitive teeth. However, because lasers are effective in reducing sensitivity, those with sensitive teeth will benefit from reduced sensitivity after the filling.

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