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起死回生藥?
Dead could be brought 'back to life' in groundbreaking project By Sarah Knapton, Science Editor
A groundbreaking trial to see if it is possible to regenerate the brains of dead people, has won approval from health watchdogs.
Indian specialist Dr Himanshu Bansal, working with Biotech companies Revita Life Sciences and Bioquark Inc, has been granted ethical permission to recruit 20 patients who have been declared clinically dead from a traumatic brain injury, to test whether parts of their central nervous system can be brought back to life.
Scientists will use a combination of therapies, which include injecting the brain with stem cells and a cocktail of peptides, as well as deploying lasers and nerve stimulation techniques which have been shown to bring patients out of comas.
The trial participants will have been certified dead and only kept alive through life support. They will be monitored for several months using brain imaging equipment to look for signs of regeneration, particularly in the upper spinal cord - the lowest region of the brain stem which controls independent breathing and heartbeat.
The team believes that the brain stem cells may be able to erase their history and re-start life again, based on their surrounding tissue – a process seen in the animal kingdom in creatures like salamanders who can regrow entire limbs.
Dr Ira Pastor, the CEO of Bioquark Inc. said: “This represents the first trial of its kind and another step towards the eventual reversal of death in our lifetime.
“We just received approval for our first 20 subjects and we hope to start recruiting patients immediately from this first site – we are working with the hospital now to identify families where there may be a religious or medical barrier to organ donation.
"To undertake such a complex initiative, we are combining biologic regenerative medicine tools with other existing medical devices typically used for stimulation of the central nervous system, in patients with other severe disorders of consciousness.
“We hope to see results within the first two to three months."
Q:
Is it possible dead could be brought 'back to life?
Would you like to try bring-life-back drug if you needed?
The meaning of death: how do we know someone is no longer alive?
If you were waking up from a 10-year coma?
If there was anti-ageing drug could make humans live to 120? What would you do?
What if you were suffer from a traumatic brain injury and lost memory?
What are the tips to live a long life?
It is possible to live forever?
“羊群效應”促團購成功
A new study into the group-buying mechanisms http://englishelc.hk
We might like to think we’re not influenced by other people, but a new study into the group-buying mechanisms – like those used on coupon sites such as Groupon and LivingSocial – reveals that telling buyers who come later to the offer how many have already signed up increases the number of purchasers. Researchers at the University of Toronto’s Rotman School of Management wanted to understand why group buying sites that have entered the market recently have enjoyed greater success than those operating a decade ago, such as Mercata and MobShop. Earlier attempts typically left potential buyers waiting for days before confirming whether or not they had got the offer they had signed up for. ‘We think one of the reasons group-buying has been successful recently is because of the short time horizon,’ says Rotman Professor Ming Hu, who co-wrote the study with Professor Mengze Shi and PhD student Jiahua Wu. ‘It allows for a herding effect.’ Another reason is the use of an information structure that discloses to later arrivals how many have already signed onto the deal. Researchers looked at two ways of designing the purchasing mechanism for a group buy: a simultaneous mechanism, where no one knows how many buyers have come before them, and a sequential mechanism, where a second group of buyers has the advantage of knowing the size of the first group. The researchers’ analytical model shows the most successful mechanism is the sequential one because it eliminates uncertainty for those coming later to the deal, and improves the confidence of those who sign on early, as they’re able to track the numbers of those who come after them. ‘That boosts confidence,’ says Professor Hu, who teaches operations management. Deals for “luxury” services, versus everyday items, work better in a group buy scenario because they offer consumers a greater benefit.
Q:
Did you buy any stuff from group buying sites?
Do you know what sheep effect is (or herd behavior)?
What is group buying?
Have you ever try group buying?
What are the pros and cons of group buying?
What are the pros and cons of online shopping?
What are the tips to get a discount on anything?
What factors trigger your buying desires?
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