Thursday, September 29, 2011

Types of cells in the brain Human Body Glial

Type of  CELLS in the Human Brain Body GLIAL
Glial cells make up 90 percent of the brain's cells. Glial cells are nerve cells that don't carry nerve impulses. The various glial (meaning "glue") cells perform many important functions, including: digestion of parts of dead neurons, manufacturing myelin for neurons, providing physical and nutritional support for neurons, and more. Types of glial cells include Schwann's Cells, Satellite Cells, Microglia, Oligodendroglia, and Astroglia.

There are many type of neurons. They vary in size from 4 microns (.004 mm) to 100 microns (.1 mm) in diameter. Their length varies from a fraction of an inch to several feet.

Brain tumor symptoms wiki
Symptoms of a brain tumor?
particuarly bad headaches, sight goes blurry, nausea but not actually throwing up, lack of appetite, occasional fits. pain at the back of the neck but these symptoms are common symptoms of non fatal illnesses too. it is unlikely that they will lead to a brain tumour unless you have two or more of them at the same time. But even then its most likely you have a migraine
Read more:

Brain tumor specimens taken from neurosurgery cases at the University of California, San Francisco (UCSF) Medical Center has given scientists a new window on the transformation that occurs as healthy brain cells begin to form tumors.
These are representative NG2+ cell pairs from tumor and non-neoplastic tissue stained for NG2 and EGFR. Scale bars represent 10 μM. Credit: Figure: C.Petritsch/UCSF.
Malignant Tumor Cells info
Malignant tumor cells are cancerous cells that spread and multiply, causing malignant tumors. A malignant tumor is an abnormal mass of tissue that is created due to the uncontrolled speed of cancerous cell division.
 Tumors can be classified in benign and malignant tumors. While a benign tumor is non-lethal and has a slow grow rate, malignant tumors are cancerous masses that expand very quickly and, because of their high metastasize rate, they can spread to other areas of the body, causing cancer to develop in those areas too.

Straddling Buses China Plan to start in 2012

Straddling Buses China Plan to start in  2012 The First Straddling Bus

Proposed by Shenzhen Hashi Future Parking Equipment Co., Ltd, the model looks like a subway or light-rail train bestriding the road. It is 4-4.5 m high with two levels: passengers board on the upper level while other vehicles lower than 2 m can go through under. Powered by electricity and solar energy, the bus can speed up to 60 km/h carrying 1200-1400 passengers at a time without blocking other vehicles’ way. Also it costs about 500 million yuan to build the bus and a 40-km-long path for it, only 10% of building equivalent subway. It is said that the bus can reduce traffic jams by 20-30%.
Here is the presentation by Song Youzhou, chairman of Shenzhen Hashi Future Parking Equipment Co., Ltd.
What you can see from the video is traffic jams, what you can hear is noise, and there is also invisible air pollution. At present, there are mainly 4 types of public transits in China: subway, light-rail train, BRT, and normal bus. They have advantages and disadvantages, for example, subway costs a lot and takes long time to build; BRT takes up road spaces and produces noises as well as pollution to the air. How to develop environmental-friendly public transportation? Straddling bus provides a solution. Let’s watch a demonstration.
The straddling bus combines the advantages of BRT, it is also a substitution for BRT and subway in the future. As you all know, the majority vehicle on the road is car, the shortest vehicle is also car. Normally our overpass is 4.5-5.5 m high. The highlight innovation of straddling bus is that it runs above car and under overpass. Its biggest strength is saving road spaces, efficient and high in capacity. It can reduce up to 25-30% traffic jams on main routes. Running at an average 40 km/h, it can take 1200 people at a time, which means 300 passengers per cart.
Another strength of straddling bus is its short construction life cycle: only 1 year to build 40 km. Whereas building 40-km subway will take 3 years at best. Also the straddling bus will not need the large parking lot that normal buses demand. It can park at its own stop without affecting the passage of cars. This is what the interior looks like: it has huge skylight that will eliminate passengers’ sense of depression when enter.
There are two parts in building the straddling bus. One is remodeling the road, the other is building station platforms. Two ways to remodel the road: we can go with laying rails on both sides of car lane, which save 30% energy; or we can paint two white lines on both sides and use auto-pilot technology in the bus, which will follow the lines and run stable.
There are also two ways in dealing with station platform. One is to load/unload through the sides; the other is using the built-in ladder so that passengers can go up and to the overpass through the ceiling door.
Straddling bus is completely powered by municipal electricity and solar energy system. In terms of electricity, the setting is called relay direct current electrification. The bus itself is electrical conductor, two rails built on top to allow the charging post to run along with the bus, the next charging post will be on the rails before the earlier one leaves, that is why we call it relay charging. It is new invention, not available yet in other places.
The set here is super capacitor, a device that can charge, discharge and store electricity quickly. The power it stores during the stop can support the bus till the next stop where another round of charging takes place, achieving zero toxic gas throughout the process.
About the ultrasonic waves put forth from the end of the bus, that is to keep those high cars or trucks away from entering the tunnel. Using laser ray to scan, cars get too close to the passage will activate the alarm on the bus end. Inside the bus, there are turning lights that indicate a the bus is intending to make a turn to warn the cars inside. Also radar scanning system is embedded on the walls to warn cars from getting too close to the bus wheels.
Nowadays many big cities have remodeled their traffic signaling system, to prioritize public buses, that is to say when a bus reaches a crossing, red light on the other side of the fork will turn on automatically to give buses the right of way. Our straddling bus can learn from this BRT method. The car can make the turn with the bus if that is the direction it wants to go too; if not, the red light will be on to stop the cars beneath while the bus take the turn.
The bus is 6 m in width and 4-4.5 m high. How will people get off the bus if an accident happens to such a huge bus? Here I introduce the most advanced escaping system in the world. In the case of fire or other emergencies, the escaping door will open automatically. I believe many of you have been on a plane. Planes are equipped with inflated ladder so people can slide down on it in emergency. I put the escaping concept into the straddling bus. It is the fastest way to escape.
The bus can save up to 860 ton of fuel per year, reducing 2,640 ton of carbon emission. Presently we have passed the first stage demonstration and will get through all of the technical invalidation by the end of August. Beijing’s Mentougou District is carrying out a eco-community project, it has already planned out 186 km for our straddling bus. Construction will begin at year end.
Straddling Buses will start in USA

It’s the brainchild of Song Youzhou of Shenzhen, who announced yesterday the formation of a U.S. company that will develop business links stateside. U.S. Elevated High-Speed Bus (Group) is looking for manufacturers to build the vehicle and representatives to sell it.

“The word ‘revolutionary’ is so overused, but this new bus actually is revolutionary,” said company spokesman Mark Shieh. “Relative to the cost of a subway line or other rail transit, our bus delivers extraordinary value. Aside from the low cost, the time for construction is about one third that for a subway.”
Is straddle Bus Start in India?
Is Straddling Bus Start in UK?