The hidden secrets of Egyptian
mummies, some up to 3,000 years old, have been virtually unwrapped and
reconstructed for the first time using scanning technology in a joint British-Australian
exhibition. Three-dimensional images of six mummies aged between 900BC and
140-180AD from ancient Egypt, which have been held at the British Museum but
never physically unwrapped, give an insight into what it was like to live along
the Nile River thousands of years ago. Researchers are revealing details of all
their physical remains as well as the embalming material used by the embalmers
like never before. A dual-energy computed tomography scanner at UK’s Royal
Brompton Hospital – only a handful are in operation around the world – was used
to obtain thousands of slices of images of the mummies, with volumetric
software then harnessed to create 3D models. It allows visitors to virtually
peel back the layers of history through interactive 3D visualizations of the CT
scans. Researchers have been able to image the arteries of the mummies and able
to look at whether they are suffering from diseases which many people are
suffering from today, such as cardiovascular diseases. They hope to image the
soft tissues at the cellular level to look at whether there’s any change or to
find evidence, for example, of cardiovascular diseases but also things like
cancer. The scans found that one of mummies, Tamut, a priest’s daughter from
900BC, had plaque in her arteries. Three dimensional printing was also used to
recreate amulets fond during scans of her mummified remains.
Wednesday, 14 December 2016
Tequila Plant May Inspire Drought Resistant Crops
Agave – the cactus like plant used
to make tequila – can survive the driest of conditions by “breathing” at night,
scientist has found. Now, they hope to harness the plant’s reverse “body clock”
to engineer drought-resistant crops that can adapt to changing climate. Researchers
from Newcastle University found for the first time that the stomata – or “breathing”
pores – on the Agave’s leaves remain shutting during the day to minimize water
loss. Most plants keep their stomata open during the day so they can take in
carbon dioxide and use the sunlight for photosynthesis. Thus, they lose water
rapidly through evaporation. In the so-called CAM plants – Crassulacean Acid
Metabolism plants like the Agave – several of the genes controlling stomata
opening have had their abundance rescheduled or ‘flipped’ from being more
abundant during the day to more abundant at night. Storing the carbon from the
CO2 taken up overnight, the plants photosynthesis in the day like others but
are able to carry out the process without opening their stomata.
Barcodes Help Families Track Elderly Members
A Japanese city has introduced a
novel way to keep track of senior citizens with dementia who are prone to
getting lost – tagging their fingers and toes with scanable barcodes. A company
in Iruma, north of Tokyo, has developed tiny nail stickers, each of which
carries a unique identity number to help concerned families find missing loved
ones, according to the city’s social welfare office. The adhesive QR-coded seals for nails – part of
a free service launched this month and a first in Japan – measure just one centimeter
(0.4 inches) in size. Being able to attach the seals on nails is a great
advantage. There are already ID stickers for clothes or shoes but dementia
patients are not always wearing those items. If an elderly person becomes
disoriented, police will find the local city hall, its telephone number and the
wearer’s ID all embedded in the QR code. The chips remain attached for an
average of two weeks- even if they get wet – the official said, citing recent
trials. Japan is grappling with a rapidly ageing population. Senior citizens
expected to make up 40% of the population around 2060. Last month, Japanese
police started offering noodle discounts at local restaurants to elderly
citizens who agreed to hand in their driving licenses. The offer followed a
series of deadly accidents involving elderly drivers – a growing problem in a
country where 4.8 million people aged 75 of older hold a license.
Your Child's Toy Could Be A Threat To Privacy
European Union and US consumer
watchdogs announced on 6 December they are filing complaints against a clutch
of smart toys that can “spy” on children and their homes, for allegedly
breaching privacy and data protection laws. The complaints target smart toys My
Friend Cayla, i-QUE Intelligent Robot and Hello Barbie, according to the
European Consumer Organisation BEUC and US groups like the Electronic Privacy
Information Centre (EPIC). Complaints are being filed with French and other
European authorities as well as the US Federal Trade Commission.
Internet-connected Cayla and i-QUE, manufactured by Los Angeles- based Genesis
Toys, hook up with a user via a phone or tablet while Hello Barbie links to the
internet through Wi-Fi, said the consultancy Bouvet on behalf of the Norwegian
Consumer Council. Hello Barbie is not sold in Europe. By purpose and design,
these toys record and collect the private conversation of young children
without any limitations on collection, use or disclosure of this personal information
concerns toys that spy. The toys subject young children to ongoing surveillance
and are deployed in homes across the United States without any meaningful data
protection standards. They pose an imminent and immediate threat to the safety
and security of children in the United States. BEUC, citing the study
commissioned by the Norwegian Consumer Council, expressed security concerns. With
simple steps, anyone can take control of the toys through a mobile phone. This makes
it possible to talk and listen through the toy without having physical access
to the toy. It alleged the terms breach the EU Unfair Contract Terms Directive
and the EU data protection directive and possibly the toy safety directive. Anything
the child tells the doll is transferred to the US-based company Nuance Communications,
who specializes in speech recognition technologies. The company reserves the
right to share this information with other third parties, and to use speech
data for a wide variety of purposes. The toys are embedded with pre-programmed
phrases, where they endorse different commercial products.
Monday, 12 December 2016
Google To Switch To Green Energy Entirely In 2017
Last year, Google consumed as much
energy as the city of San Francisco. The online giant said on 6 December that
all of its data centers around the world will be entirely powered with renewable
energy sources sometime next year. This is not to say that Google computers
will consume nothing but wind and solar power. Google gets electricity from a
power company, which operates an energy grid supplied by hydroelectric dams,
natural gas, and coal and wind power. Over the last decade, Google has made
deals with renewable producers, guaranteeing to buy the energy they produce
with their wind turbines and solar cells. With those guarantees, companies can
obtain bank financing to build more turbines. The power created by the renewable
is plugged into the utility grid, so that Google’s usage presents no net
consumption of fossil fuels and the pool of electricity gets a larger share of
renewable sources. Unlike carbon based power wind supply prices do not
fluctuate. The more renewable energy it buys, the cheaper those sources get. About
25% of USs’ electricity goes to businesses, and companies like Google are now
about 2 percentage points of that. Google operates eight businesses and runs on
13 data centers. The 5.7 terawatt hours of electricity Google consumed in 2015
is equal to output of two 500 megawatt coal plants. That is enough for 140,000
person towns.
A Robotic Hand Almost As Good As Real
Scientists have developed a robotic
hand that can be controlled with the mind, allowing people with certain types
of spinal injuries to perform everyday tasks, such as using a fork or drinking
from a cup. The low-cost device was tested in Spain on six people with quadriplegia
that affects one’s ability to grasp or manipulate objects. By wearing a cap that
measures electric brain activity and eye movement, the users were able to send
signals to a computer that controlled the glove like device attached to their hand.
Participants were able to perform daily activities better with the robotic hand
than without it, according to results published on 6 December in the journal
Science Robotics. The principle of using brain-controlled robotic aids to
assist people with quadriplegia isn’t new. But many existing systems require
implants, which can cause health problems, or use wet gel to transmit signals
from the scalp to the electrodes. The gel needs to be washed out of the user’s
hair afterwards, making it impractical in daily life. The participants, who had
previously expressed difficulty in performing everyday tasks without
assistance, rater the system as reliable and practical, and did not indicate
any discomfort during or after use. It took the participants just 10 minutes to
learn how to use the system before they were able to carry out tasks such as picking
up chips or signing a document. There were some limitations to the system
though. Users had to have sufficient function in their shoulder and arm to
reach out with the robotic hand. And mounting the system required another person’s
help.
Friday, 9 December 2016
China Fires 'Mist Cannon' To Fight Air Pollution
As smog continued to blanket
Beijing and many cities in China, engineers pressed in pollution-fighting
artillery called “mist canon”, a large machine mounted on a truck that sprays
water to dilute the haze. The machines were initially used at construction
sites and mines to reduce dust. Now engineers have improved the machines to
make them release tinier droplets of mist for combating fine airborne
particles, said Xu Yuexin, an engineer with Beijing Capital Group Boom sound
Environment Science & Technology Co Ltd. the truck works by nebulising
water into tiny particles, with diameter in microns, the same as PM 2.5 and PM
10 and spraying them into the air. Then they combine with dust and fine
particles to fall to the ground. Experts have found the mist canons have their
limits. They are the only one of the measures being taken. In October, China
deployed the world’s largest outdoor air purifier designed by a Dutch engineer
in Beijing to combat smog. The capital issued its second-highest warning
against air pollution, an orange alert, on 1 December. The mist cannon trucks
are being used to spray in the mornings, and do so more frequently, some three
to five times, during smoggy days. Authorities also spray special chemicals on
the roads through regular watering vehicles once a week. The spray absorbs and
consolidates the dust and pollutants from vehicle exhaust.
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