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Electric scooters have thrown in a bigger transportation net in the cities that have already legalized their use. This mode of transport, from its name, involves the use of electricity stored in batteries, unlike their fellow petrol bikes whose engines operate on fuel. It contains its own pros and cons that involve its use on the road. Important notice has been placed on the disadvantages that come with its use. The following are some of the demerits that come in handy when transiting in them.
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BRINGING THEM ON A SUBWAY
Since these electric scooters have quite heavy batteries, it would prove to be a challenge to bring them on the subway. It is a quite dominant and ground flouting mode of either personal or public transit across urban areas. They also prove to be troublesome to pedestrians who walk along with subways and bring nuisances disrupting the peace of most casual pedestrians. Being electrically operated, they contain some safety hazards, too, which are environmental. They can hardly carry heavy pillion riders along the subway as they are already substantial, and often, their tire pressure needs to be checked in a consistent span of 2 weeks or so.
LOCKING THEM UP
Since exclusive prioritization is given to cars, blind allegiance to parking space is provided to vehicles; hence the scope for locking them up is quite minimal. Since they have very few users, the prices the electric scooter users pay for locking the bikes up are quite high. They are often not given vital consideration as they also occupy more space when locking them up as compared to other bikes. They are also proven to be environmentally unfriendly due to pollution caused by the batteries; hence the space for locking them up may not be provided in a bid to minimize their use.
The speed of the electric scooters is quite low as the power obtained from the battery is regulated. The motor accessories yield less energy as the electric bike is quite substantial. The speed varies with the wattage of the cell as higher voltage, and higher charge provides a relatively more top speed, which decreases with the decrease in wattage and charge of the battery. Alongside its speed, the running range of the scooter is quite less hence needs so much care and regular maintenance to optimally acquire the service of the electric bikes in terms of speed and their running range.
The electric scooters usually have relatively tiny wheels that make them easily susceptible to crack on roads, potholes, and road debris, which may lead to the electric bikes failing or rolling over, hence causing small accidents that could be fatal. Since electronic scooter users are said to be the most vulnerable to road injuries, the small wheels require a higher level of skill in its maneuverability and artistic balance when riding them.
POWER AND PICK UP
Electric scooters have relatively less power and pick-up and can ride only over very gentle slopes like those found in flyovers, but if the hill is quite steep, the electric scooter would be useless for use in such a zone. They cannot accelerate from a stationary point and can hardly overtake any means of road transport. All these are because of their battery wattage, which is not quite efficient to enable it to have power and enough pick-up for use on the road and even on steep slopes.
HIGH INITIAL AND RUNNING COSTS
The electric scooters are way more expensive than petrol bikes as they have more complex accessories than petrol bikes. Also, the use of electric scooters could prove way more costly than petrol bikes and scooters since motors often need much care and don’t last long compared to engines of petrol bikes. The battery life of electric scooters is quite short, and its consistent replacement would result in incurring high costs. Since they have no market value, the taxes payable for operating these scooters can be relatively high.
This is the biggest challenge faced by electric scooter users when they want prospective buyers to sell their scooters. They hardly have any market value as they can prove to be quite useless after their operation lifespan of around seven years and often need a replacement for their batteries; hence, they would unlikely fetch a higher value than place it for scrap value.
Since electric scooters have proven to have demerits of its kind, they are just substantial and not fatal; hence the users have found a way and learned how to live and work with these disadvantages. For maximum service of the electric scooters, their batteries have to be replaced regularly and taken good care of by neither overusing it nor under-using it. This mode of transport is mostly for personal benefit rather than the public, as is usually the case in standard bikes.
The US researchers have discovered a class of immune cells that plays a role in miscarriage, which affects about a quarter of pregnancies.
Researchers at the University of California-San Francisco found that the recently discovered subset of cells known as extrathymic Aire-expressing cells in the immune system may prevent the mother's immune system from attacking the placenta and fetus.
The researchers showed that pregnant mice who did not have this subset of cells were twice as likely to miscarry, and in many of these pregnancies fetal growth was severely restricted.
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"When you're pregnant, the immune system is seeing the placenta for the first time in decades -- not since the mother made a placenta when she herself was a fetus," said Eva Gillis-Buck, from UCSF.
"Our research suggests that this subset of immune cells is carrying out a sort of 'secondary education' -- sometimes many years after the better-known population of the educator cells have carried out the primary education in the thymus -- teaching T cells not to attack the fetus, the placenta and other tissues involved in pregnancy," she added. The findings are published in the journal Science Immunology.
The immune system has to be educated not to attack one's own tissues and organs to prevent autoimmune disease. But pregnancy presents a unique challenge since the fetus expresses proteins found in the placenta as well as proteins whose genetics are distinct from the mother.
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"It was a conceptual leap to link Aire-expressing cells, which are critical for preventing autoimmune disease, to pregnancy," said Tippi Mackenzie, Professor of Surgery at UCSF's Center for Maternal Foetal Precision Medicine.
In the thymus, Aire-expressing cells begin interacting with other immune cells very early in life to teach them what not to attack. The thymus begins to shrink and is nearly gone by adulthood, by which time most immune cells have been educated. But as the thymus shrinks, the population of eTACs in lymph nodes and the spleen expands, the researchers explained.
The study suggests a healthy pregnancy may depend on having these cells around, they added. (IANS/KB)
The tiny emojis being shared on billions of devices worldwide can play a major role in digital communication, with most people saying that emoji compels them to feel more empathy towards others, according to an Adobe report.
Adobe's global emoji study found that emoji even helps people overcome language barriers and form connections that would otherwise be difficult to do.
"We were surprised and delighted by the discoveries made in the survey, most notably how enthusiastic respondents were for emoji as a means to express themselves," the company said in a statement.
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Emojis sometimes get criticized for being overly saccharine, but this sweetness is key when it comes to diffusing some of the heaviness of online communication.
"Many of the emoji are focused on positive emotions, so it's easy to insert them into our conversations and lighten the mood," the Adobe study said.
It's not surprising that over half of those surveyed feel more comfortable using emojis than talking on the phone or in person.
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This applies to less intense situations too. Dating, for example, can be tricky — especially when it's online or via digital apps, as it often is now.
The study also found that emoji even helps people overcome language barriers and form connections that would otherwise be difficult to do.
In celebration of World Emoji Day on Saturday, Adobe's '2021 Global Emoji Trend Report' surveyed 7,000 people in the US, the UK, Germany, France, Japan, Australia, and South Korea. (IANS/KB)
Following the grand Richard Branson show where he carried Andhra Pradesh-born Sirisha Bandla and fellow space travelers on his shoulders after successfully flying to the edge of space, it is time for Amazon Founder Jeff Bezos to applaud Sanjal Gavande, one of the key engineers who designed the New Shephard rocket set to take Bezos and the crew to space on July 20.
Billionaire Bezos is set to fly to the edge of space aboard what is touted as the world's first unpiloted suborbital flight. Born in Kalyan, Maharashtra, Gavande is a systems engineer at Blue Origin who always dreamt of designing aerospace rockets.
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After completing Bachelor's in mechanical engineering from the University of Mumbai, she flew to the US in 2011 to pursue a Master's in mechanical engineering from the Michigan Technological University. She also applied for an engineering job at the US space agency NASA but finally landed her dream job at Blue Origin
Sirisha flew to the US in 2011 to pursue a Master's in mechanical engineering from the Michigan Technological University.IANS
Bezos, his brother Mark, aviation pioneer Mary Wallace 'Wally' Funk, and other passengers are set to liftoff from west Texas and travel just beyond the edge of space on July 20. Blue Origin announced this week that Oliver Daemen, an 18-year-old high school graduate from the Netherlands, would join the crew.
Oliver is the son of millionaire Joe Daemen, Founder, and CEO of the Dutch investment company Somerset Capital Partners. Blue Origin, however, did not reveal how much Daemen paid for his son's trip to space. Bezos chose July 20 as the launch date to honor the 52nd anniversary of the Apollo 11 moon landing.
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The launch site for Blue Origin's first human flight will be in a remote location north of Van Horn, Texas, from where the firm had launched New Shepard for previous flights. Blue Origin has received final approval from the Federal Aviation Administration (FAA) to carry humans on the New Shepard rocket into space.
On July 12, Bandla touched the edge of space with three others, including Virgin Galactic's billionaire CEO Richard Branson. Bandla vaulted into space onboard VSS Unity 22. After the successful spaceflight, Branson carried the Indian-American on his shoulders while celebrating their flight to space, at Spaceport America in New Mexico. (IANS/KB)