Scientists have developed a new 3D-printed
smartphone microscope that allows users to control live microbes and play games
like Pac-Man with them. Many subjects like engineering or programming have toys
that get kids into it, but microbiology does not have that to the same degree. The
LudusScope consists of a platform for the micro-consists of a platform for the
microscope slide where Euglena – light responsive microbes – swim freely,
surrounded by four LEDs. Kids can influence the swimming direction of microbes
with a joystick that activates the LEDs. Above the platform a smartphone holder
positions the phone’s camera over a microscope eyepiece, providing a view of
the cells below. On the phone, children can run a variety of software that overlay
on top of the image of the cells.
Thursday, 13 October 2016
Wednesday, 12 October 2016
Taking Cold Shower Boosts Immunity, Relieves Stress
The benefits of taking shower in
cold water include improved immunity and circulation, stress relief, alertness
and mental clarity – but is that enough to convince you to partake in a flow of
cold water each morning? The case for icy showers has once again been buoyed by
a recent study carried out in The Netherlands. It suggests that participants
who had a cold blast at the end of their shower recovered more quickly from
illnesses, and took fewer days off work, than those who had regular showers.
Out of the study’s 3,000 participants, two thirds chose to continue having cold
showers and reported that it boosted their energy levels as much as a strong
cup of coffee. There’s also evidence that stepping into chill water can make you
feel more mentally alert; as a result of the shock you begin to breathe more
deeply which boost your heart rate, increases circulation and releases
endorphins.
This Invisible TV Is Just A Glass Pane When Switched Off
At first glance, it looks like a
glass pane in a sliding door, but at the flick of a switch a television screen
instantly appears. Turn the TV panel off, and it’s hard to tell if it was ever
there to begin with. The sci-fi style googlebox was first revealed by Japanese electronics
company Panasonic at the Las Vegas Consumer Electronics Show in January. It has
since been updated and refined. The makers of the gadget said they had swapped
the LED screen for a new OLED display that doesn’t need a backlight that doesn’t
need a backlight to give it a picture. Since then, the Japanese company has
embedded the screen into the front of a cabinet and has also improved the image
to where it is “almost indistinguishable from existing televisions”.
The screen looks like an ordinary
sheet of glass until it’s turned on and the high definition picture shimmers
into view. The OLED screen is made from a fine mesh, embedded into the glass
sliding door. While the TV image is visible even with the backlight on, once it’s
dimmed the image is clear and bright enough to be almost indistinguishable from
existing televisions. While not in use, consumers can see the vases and statues
that sit behind the television on the shelves. The TV is still a prototype, and
is unlikely to be available for at least three years, according to a Panasonic
spokesperson. Panasonic isn’t the only company that’s experimenting with
futuristic TVs. LG has a screen that rolls up like a newspaper.
Bikers May Get Airbag Helmets For Extra Cover
Airbag helmets may reduce impact of
a crash by six fold compared to traditional bike helmets, drop tests from a
height of two metres have shown. Foam helmets can and have been proven to
reduce the likelihood of skull fracture and severe brain injury. But, many falsely
believe that a bike helmet is there to protect against a concussion. Researchers
tested a new type of helmet that comes in a soft pocket worn around the neck. It
pops up, like an air bag, around a person’s head when it senses a potential
collision. Researcher said that the large size of the airbag helmet, compared
to foam bike helmets, was the likely source of its success. Being larger, it
can also be softer, allowing for a more cushioned fall. However, this cushioning
also has a potential downside. In the testing, the airbag helmet was
pre-inflated and the researchers maximized the pressure of the air inside the
helmet before each drop in order to get these results.
Solar-Powered Dress To Charge Phone
Every hour your smartphone is idle
in your pocket or bag, the sun is bathing the earth in enough energy to run the
world economy for a year. The obvious fix here is to turn every square inch of
your body into a power plant – solar power could be the ultimate accessory,
more important than purses or satchels. On 5 October, a team of researchers
said they developed a fabric that was made from cotton and two electronic fibers.
One fiber generates power from sunlight, and the other, called a “fiber super
capacitor”, stores the electrons and provides current, like a battery. The scientists
said their fiber could withstand the bending, twisting and wrapping normal to
industrial weaving.
Fixing rips in the fabric isn’t as
easy as ironing on a new patch – connecting a new swatch into a garment
represents a “delicate sewing process”. The new material has been tested at
light intensities between 70% and 120% of the sun’s average, and works in
natural and artificial light, according to researchers. The new technique can
let them weave solar fibers and power storage into “many possible patterns and
tailor them into any designed shape without losing their performance”. On the
flipside, the wired fabric isn’t waterproof. The sun doesn’t always shine,
making it only intermittent fuel. In summer, people wear sleeveless shirts and
shorts. This means less surface area and less power.
Tuesday, 11 October 2016
Now, Test Glucose With Contact Lens
Scientist has developed a new
technology that could allow non-invasive testing for glucose via a contact lens
that samples its levels in tears. Blood testing is the standard option for
checking glucose levels. There’s no noninvasive method to do this. It always requires
a blood draw. This unfortunately the state of the art. However, glucose is a
good target for optical sensing, and especially from what is known as surface-enhanced
Raman scattering spectroscopy. This is an alternative approach, in contrast to
a Raman spectroscopy based noninvasive glucose sensor researcher developed. Researchers
developed a tiny device, built from multiple layers of gold nanowires stacked
on top of a gold film and produced using solvent assisted nanotransfer printing,
which optimized the use of surface enhanced Raman scattering to take advantage
of the technique’s ability to detect small molecular samples. The device enhances
the sensing properties by creating narrow gaps within the nanostructure which
intensify the Raman signal. The contact lens concept is not unheard of – Google
has submitted a patent for a multi sensor contact lens – which is said to have
various other applications too.
Why Acne Is Likely To Keep Your Skin Young
People who suffer from acne may
have better protection against the signs of aging, such as wrinkles and
skin-thinning, a new study has claimed. Scientists have found that people who
have had acne are likely to have longer telomeres in their white blood cells. Telomeres
are repetitive nucleotide, sequences found at the end of chromosomes that
protect them from deteriorating during the process of replication. Telomeres gradually
break down and shrink as cells age, eventually leading to cell death, which is
a normal part of human growth and ageing. The study measured the length of
white blood cell telomeres in 1,205 twins from the TwinsUK cohort. A quarter of
the twins reported having experienced acne. Analyses adjusted for age,
relatedness, weight and height showed that telomere length in acne sufferers
was significantly longer, which means that white blood cells are better
protected from the usual deterioration with age.
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