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Category Archives: Science

Hong Kong lawyer declared brain dead awakes after calls to pull plug

08 Monday Apr 2013

Posted by Bette Cox in Science, World News

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miracles

In a time when nearly all international news is “bad news,” we need an article like this to remind us: there is a God who loves us, and an enemy out to kill us. Even in a coma, Suzanne Chin’s knowledge of God’s Word and trust in her loving Lord were powerful weapons.

China Daily Mail online
8 April 2013

suzanne-chin-john-alabasterPhoto: Suzanne Chin and her husband John Alabaster.

Lawyer Suzanne Chin is convinced that what happened to her four years ago is nothing short of a miracle.

The mother of two was living and working in Hong Kong when she suffered a heart attack, was hospitalised in a coma and declared brain dead.

The head of the intensive care unit, two neurologists and a cardiologist told her husband to prepare for the worst. Soon, he was advised to take her off life support because, simply put, there was no hope.

Then, three days after she was admitted, she woke up from her coma. She recovered within a week and left the hospital. Today, she is living in Singapore, still working as a lawyer, still a wife and mum. She is well, and she is alive.

Chief Justice Sundaresh Menon recalled her remarkable story in a speech earlier this month on euthanasia and assisted dying. When The Sunday Times contacted Ms Chin for her story, she agreed only to answer questions via e-mail.

Her husband, private investor John Alabaster, described what he went through too and said one thing was clear to him throughout their ordeal: “I did not talk to my children about switching off the life support simply because it was not an option for me.”

But first, this is what happened to them in April 2009.

April 20 started out as just another morning in their household. The usual scramble to get the children off to school before Ms Chin took off on her usual morning hike with her dog.

But a few minutes after leaving home, she returned. She was in no pain but felt something was amiss. It was after she showered that she felt something was wrong and alerted her husband.

“The last thing I remember was expressly forbidding him from calling an ambulance,” she said.

She was taken unconscious to hospital and sent to the ICU. She had no history of heart problems, but had suffered a cardiac arrest.

It was a huge shock for her husband. One day, everything had been normal for the couple, both in their 40s, and their children then aged 12, and seven. The next day, she was in a coma and it looked very bad.

The specialists told Mr Alabaster she had suffered brain stem death and he had to prepare himself for “letting her go”. “In their opinion – and they were very firm – there was absolutely no chance of any sort of recovery,” he recalled.

The next day, a doctor asked him if he had thought about it because his wife was neurologically lifeless, a valve in her heart had been severely damaged and there was no point keeping her alive.

Things looked “worse than bleak” but he refused to say yes to switching off his wife’s life support, even though the doctor had been well intentioned. “But his demeanour when I told him of my decision to reject his opinion was one of patronising incredulity coupled with an unsaid ‘oh, you’ll come around’,” he said.

On the third day, she revived.

Ms Chin opened her eyes to see her husband bending over her, then she realised they were not at home, and noticed the wires and tubes stuck all over her body.

“I realised that I was in a hospital and with tears in his eyes, my husband said that everything was going to be all right,” she said. “Within a very few hours, I was able to grasp a marker pen and I was able slowly to converse with the people around me.”

What remains vivid is what she described as a recurring vision during the lost days when she was in a coma.

She said: “I saw myself lying on a bed unable to move or speak. A man appeared by my side. He did not seem overtly threatening in any way but something in me sensed that he was not good.

“He told me that if I wanted to move or speak, all I would have to do was to follow him. I demanded that he leave me alone, but he would not go away. Over and over again I repeated this. I also prayed without ceasing.

“After a while, the man faded away. This vision repeated several times, but on what turned out to be the last occasion, the man started to get angry. He threatened to ‘take’ my daughter if I refused to ‘follow’ him. Again, I was resolute and unyielding, telling him he had no power over me as I was a child of God.

“It was at that moment that I woke from my coma to see my husband John standing by my bed.”

People she has related this to have asked if it might have been a dream. She said: “What is amazing is that this happened at a time when medically, I had been pronounced as being brain dead.”

Ms Chin’s recovery from first opening her eyes to sitting up with her feet over the side of the bed took just 36 hours.

“Not one doctor who treated me while in hospital or subsequently any specialist that I have seen since, either in Hong Kong or later in Singapore, has been able to account for the speed of my recovery or that I was able to come back from that hopeless position at all,” she said.

“There is no doubt that I had suffered massive brain damage resulting in brain stem death. If one looks at the situation rationally and logically, there is no explanation for what happened. I truly believe that this was a miracle from God and that I have been blessed with a second chance.”

Ms Chin and her husband said that while both are Christians, neither was committed or active in church at the time.

It was her brother, Dr Alan Chin, a Singapore doctor and a fervent Christian, who flew to Hong Kong, prayed with Mr Alabaster when she appeared the worst and believed that she would pull through.

Dr Chin told The Sunday Times he was shocked to find his sister diagnosed with brain stem death. “My medical training told me there was no hope, but my faith in God said that there was hope in Jesus Christ,” he said.

Mr Alabaster recalled mounting pressure from the medical staff treating his wife to “put Suzanne – and ourselves – out of our misery by switching off machines that were keeping her alive.” Even when she made an occasional twitch, they quashed his hopes by insisting that it was purely a reflex. Their talk always returned to “saying goodbye” and “letting go”.

“I, on the other hand, hopefully and prayerfully saw in these very slight movements a base from which to see further progress,” he said. They made him wonder if his brother-in-law could be right, that she would be healed.

What was also distressing was that as news of Ms Chin’s sudden illness spread, many of her friends from Hong Kong and elsewhere began arriving at her bedside, and Mr Alabaster knew that from talking to the medical staff, they too expected the worst.

What was hardest for him though, was talking to his daughter and son about their mother.

“I had told them that Mum was sick and in the infirmary – that was understandable to them as they had both been born at the same hospital,” he said.

He tried to put up a cheerful front and hoped to slowly break the news that they might lose their mother. But soon friends and family were arriving and he had to tell them she was seriously ill.

But he never told them about switching off the life support.

“It wasn’t that it was a choice I did not want to face, it was just not something I could or would ever sanction. The point was not that the person on that bed connected to all those austere machines was my wife.

“It was more fundamental than that… If that machine were to be turned off, all hope would vanish and I only had God and hope to rely on.”

Then, as suddenly as she had taken ill, Ms Chin made a recovery that astounded the doctors and nurses. “But their confusion and bafflement was juxtaposed with the amazement, relief and total ecstasy that my children and I were feeling as, by God’s grace, we had got our Suzanne back.

“Ten days after the attack she was as good as new. The tear in her heart valve that was so obvious on several ECGs and the ensuing poor heart performance was totally healed. This restoration, I am told, cannot happen without open heart surgery as heart valves do not repair by themselves.

“Suzanne’s brain activity was totally back to normal and from that day to this has never had even the slightest relapse.”

In the days that followed her recovery, Ms Chin learnt about all that had happened and how her doctors were convinced there was no hope and it would be best to let her die, but her brother was so sure she would live.

She said: “It pains me to think about what my husband, my children, my family and friends went through. It was a tremendously difficult time for all of them. Yet when faced with such a difficult decision, they chose to fight for me. Without their faith, I would not be here today, able to recount this story.”

http://chinadailymail.com/2013/04/08/hong-kong-lawyer-declared-brain-dead-awakes-after-calls-to-pull-plug/

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Beam me up, Scotty? Telepresence robots let employees ‘beam’ into work

30 Sunday Dec 2012

Posted by Bette Cox in Science, Technology

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Tags

robots

telepresencerobotSenior software engineer Josh Faust, seen on screen, navigates his company’s office, Suitable Technologies in Palo Alto, Calif., using a Beam system, as fellow engineer Stephanie Lee, at right, works on a project.

The Associated Press 23 December 2012
PALO ALTO, Calif. —

Engineer Dallas Goecker attends meetings, jokes with colleagues and roams the office building just like other employees at his company in Silicon Valley.

But Goecker isn’t in California. He’s more than 2,300 miles away, working at home in Seymour, Ind.

It’s all made possible by the Beam — a mobile videoconferencing machine that he can drive around the Palo Alto offices and workshops of Suitable Technologies. The 5-foot-tall device, topped with a large video screen, gives him a physical presence that makes him and his colleagues feel like he’s actually there.

“This gives you that casual interaction that you’re used to at work,” Goecker said, speaking on a Beam. “I’m sitting in my desk area with everybody else. I’m part of their conversations and their socializing.”

Suitable Technologies, which makes the Beam, is now one of more than a dozen companies that sell so-called telepresence robots. These remote-controlled machines are equipped with video cameras, speakers, microphones and wheels that allow users to see, hear, talk and “walk” in faraway locations.

More and more employees are working remotely, thanks to computers, smartphones, email, instant messaging and videoconferencing. But those technologies are no substitute for actually being in the office, where casual face-to-face conversations allow for easy collaboration and camaraderie.

Telepresence-robot makers are trying to bridge that gap with wheeled machines — controlled over wireless Internet connections — that give remote workers a physical presence in the workplace.

These robotic stand-ins are still a long way from going mainstream, with only a small number of organizations starting to use them. The machines can be expensive, difficult to navigate or even get stuck if they venture into areas with poor Internet connectivity. Stairs can be lethal, and nontechies might find them too strange to use regularly.

“There are still a lot of questions, but I think the potential is really great,” said Pamela Hinds, co-director of Stanford University’s Center on Work, Technology, & Organization. “I don’t think face-to-face is going away, but the question is, how much face-to-face can be replaced by this technology?”

Technology watchers say these machines — sometimes called remote presence devices — could be used for many purposes. They could let managers inspect overseas factories, salespeople greet store customers, family members check on elderly relatives or art lovers tour foreign museums.

Some physicians are already seeing patients in remote hospitals with the RP-VITA robot co-developed by Santa-Barbara, Calif.-based InTouch Health and iRobot, the Bedford, Mass.-based maker of the Roomba vacuum.

The global market for telepresence robots is projected to reach $13 billion by 2017, said Philip Solis, research director for emerging technologies at ABI Research. The robots have attracted the attention of Russian venture capitalist Dimitry Grishin, who runs a $25 million fund that invests in early-stage robotics companies.

“It’s difficult to predict how big it will be, but I definitely see a lot of opportunity,” Grishin said. “Eventually it can be in each home and each office.”

His Grishin Robotics fund recently invested $250,000 in a startup called Double Robotics. The Sunnyvale, Calif., company started selling a Segway-like device called the Double that holds an Apple iPad, which has a built-in videoconferencing system called FaceTime.

The Double can be controlled remotely from an iPad or iPhone.

So far, Double Robotics has sold more than 800 units that cost $1,999 each, said co-founder Mark DeVidts.

The Beam got its start as a side project at Willow Garage, a robotics company in Menlo Park where Goecker worked as an engineer.

A few years ago, he moved back to his native Indiana to raise his family, but he found it difficult to collaborate with engineering colleagues using videoconferencing systems.

“I was struggling with really being part of the team,” Goecker said. “They were doing all sorts of wonderful things with robotics. It was hard for me to participate.”

So Goecker and his colleagues created their own telepresence robot. The result: the Beam and a new company to develop and market it.

At $16,000 each, the Beam isn’t cheap. But Suitable Technologies says it was designed with features that make “pilots” and “locals” feel the remote worker is physically in the room: powerful speakers, highly sensitive microphones and robust wireless connectivity.

The company began shipping Beams last month, mostly to tech companies with widely dispersed engineering teams, officials said.

“Being there in person is really complicated — commuting there, flying there, all the different ways people have to get there. Beam allows you to be there without all that hassle,” said CEO Scott Hassan, beaming in from his office at Willow Garage in nearby Menlo Park, Calif.

Not surprisingly, Suitable Technologies has fully embraced the Beam as a workplace tool.

On any given day, up to half of its 25 employees “beam” into work, with employees on Beams sitting next to their flesh-and-blood colleagues and even joining them for lunch in the cafeteria.

Software engineer Josh Faust beams in daily from Hawaii, where he moved to surf, and plans to spend the winter hitting the slopes in Lake Tahoe.

He can’t play pingpong or eat the free, catered lunches in Palo Alto, but he otherwise feels like he’s part of the team.

“I’m trying to figure out where exactly I want to live. This allows me to do that without any of the instability of trying to find a different job,” Faust said, speaking on a Beam from Kaanapali, Hawaii. “It’s pretty amazing.”

http://www.foxnews.com/tech/2012/12/23/employees-are-beaming-into-work-using-telepresence-robots/

For more about the Beam, click https://www.suitabletech.com/

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Scientists develop spray-on batteries, paint-on solar cells

21 Saturday Jul 2012

Posted by Bette Cox in Science, Technology

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Tags

Paint-on solar cells, Spray-on batteries, technology

One of my interests is the invention or discovery of new technology. Here are recent reports about two of those: (1) Spray-on batteries, which could be used in conjunction with (2) Paint-on solar cells.

Scientists develop spray-on batteries
NewsDaily.com

Image from CNET article, see link at bottom of first article below.

“The researchers tested the device using nine bathroom tiles coated with the paint and connected to each other. When they were charged, the batteries powered a set of light-emitting diodes for six hours, providing a steady 2.4 volts.”

LONDON, June 28, 2012 (Reuters) — Scientists in the United States have developed a paint that can store and deliver electrical power just like a battery.

Traditional lithium-ion batteries power most portable electronics. They are already pretty compact but limited to rectangular or cylindrical blocks.

Researchers at Rice University in Houston, Texas, have come up with a technique to break down each element of the traditional battery and incorporate it into a liquid that can be spray-painted in layers on virtually any surface.

“This means traditional packaging for batteries has given way to a much more flexible approach that allows all kinds of new design and integration possibilities for storage devices,” said Pulickel Ajayan, who leads the team on the project.

The rechargeable battery is made from spray-painted layers, with each representing the components of a traditional battery: two current collectors, a cathode, an anode and a polymer separator in the middle.

The paint layers were airbrushed onto ceramics, glass and stainless steel, and on diverse shapes such as the curved surface of a ceramic mug, to test how well they bond.

One limitation of the technology is in the use of difficult-to-handle liquid electrolytes and the need for a dry and oxygen-free environment when making the new device.

The researchers are looking for components that would allow construction in the open air for a more efficient production process and greater commercial viability.

Neelam Singh, who worked on the project, believes the technology could be integrated with solar cells to give any surface a stand-alone energy capture and storage capability.

The researchers tested the device using nine bathroom tiles coated with the paint and connected to each other. When they were charged, the batteries powered a set of light-emitting diodes for six hours, providing a steady 2.4 volts. The results of the study were published on Thursday in the journal Nature Scientific Reports.

http://www.newsdaily.com/stories/bre85r13l-us-batteries-paint/

For a video presentation and other information, also see:
http://news.cnet.com/8301-17938_105-57463096-1/spray-on-battery-makes-power-paintable/?part=rss&subj=crave&tag=title&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A%20cnet%2FpRza%20%28Crave%29

————————————————————
Paint-On Solar Cells Developed
ScienceDaily.com

Paint-on Solar CellImagine if the next coat of paint you put on the outside of your home generates electricity from light — electricity that can be used to power the appliances and equipment on the inside.

A team of researchers at the University of Notre Dame have made a major advance toward this vision by creating an inexpensive “solar paint” that uses  semiconducting nanoparticles to produce energy.

“We want to do something transformative, to move beyond current silicon-based solar technology,” says Prashant Kamat, John A. Zahm Professor of Science in Chemistry and Biochemistry and an investigator in Notre Dame’s Center for Nano Science and Technology (NDnano), who leads the research.

“By incorporating power-producing nanoparticles, called quantum dots, into a spreadable compound, we’ve made a one-coat solar paint that can be applied to any conductive surface without special equipment.”

The team’s search for the new material, described in the journal ACS Nano, centered on nano-sized particles of titanium dioxide, which were coated with either cadmium sulfide or cadmium selenide. The particles were then suspended in a water-alcohol mixture to create a paste.

When the paste was brushed onto a transparent conducting material and exposed to light, it created electricity.

“The best light-to-energy conversion efficiency we’ve reached so far is 1 percent, which is well behind the usual 10 to 15 percent efficiency of commercial silicon solar cells,” explains Kamat.

“But this paint can be made cheaply and in large quantities. If we can improve the efficiency somewhat, we may be able to make a real difference in meeting energy needs in the future.”

“That’s why we’ve christened the new paint, Sun-Believable,” he adds. Kamat and his team also plan to study ways to improve the stability of the new material.

NDnano is one of the leading nanotechnology centers in the world. Its mission is to study and manipulate the properties of materials and devices, as well as their interfaces with living systems, at the nano-scale.

This research was funded by the Department of Energy’s Office of Basic Energy Sciences.

http://www.sciencedaily.com/releases/2011/12/111221211324.htm

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