From the ancient pyramids to modern buildings, various three-dimensional (3-D) structures have been formed by packing shaped objects together. At the macroscale, the shape of objects is fixed and thus dictates how they can be arranged. For example, bricks attached by mortar retain their elongated rectangular shape. But at the nanoscale, the shape of objects can be modified to some extent when they are coated with organic molecules, such as polymers, surfactants (surface-active agents), and DNA. These molecules essentially create a "soft" shell around otherwise "hard," or rigid, nano-objects. When the nano-objects pack together, their original shape may not be entirely preserved because the shell is flexible—a kind of nanoscale sculpturing.
* This article was originally published here
Sunday 19 May 2019
Mercedes want to abandon combustion engines by 2039
German giant Mercedes-Benz said Monday it wants to stop selling traditional combustion engine cars by 2039 and plans for its new vehicles sold worldwide by that time to be carbon-neutral.
* This article was originally published here
* This article was originally published here
When an aircraft landing system is made to enter the spoofing zone
Just what the airplane passenger who is always skittish does not want to hear: Radio navigation on planes for landing purposes is not secure; signals can be hacked.
* This article was originally published here
* This article was originally published here
Button batteries can rapidly damage stomach lining before symptoms appear
Damage to the lining of the stomach can occur quickly when children swallow button batteries; therefore, clinicians should consider prompt endoscopic removal, even when the child is symptom free and the battery has passed safely through the narrow esophagus, according to research presented at Digestive Disease Week (DDW) 2019. The recommendations represent a change from current practice of watching and waiting.
* This article was originally published here
* This article was originally published here
Samsung at foundry event talks about 3nm, MBCFET developments
"The nanometer process deals with the space between the transistors mounted on a substrate at a nanometer level," said Pulse.
* This article was originally published here
* This article was originally published here
Here's why your internet may be delivered by a drone someday soon
As the pilotless flying wing came in for a landing, winds suddenly picked up. Facebook Inc.'s Aquila drone—powered by the sun and wider than a Boeing 737 jetliner—struggled to adjust. Just before landing, part of the right wing broke off.
* This article was originally published here
* This article was originally published here
Avelumab and axitinib approved for treatment of renal cell carcinoma
(HealthDay)—Avelumab (BAVENCIO) was approved this week for first-line treatment of advanced renal cell carcinoma (RCC) in combination with axitinib, the U.S. Food and Drug Administration announced.
* This article was originally published here
* This article was originally published here
A social perception scheme for behavior planning of autonomous cars
To navigate dynamic environments, autonomous vehicles (AVs) should be able to process all information available to them and use it to generate effective driving strategies. Researchers at the University of California, Berkeley, have recently proposed a social perception scheme for planning the behavior of autonomous cars, which could help to develop AVs that are better equipped to deal with uncertainty in their surrounding environment.
* This article was originally published here
* This article was originally published here
A new era in 3-D printing
In the mid-15th century, a new technology that would change the course of history was invented. Johannes Gutenberg's printing press, with its movable type, promoted the dissemination of information and ideas that is widely recognized as a major contributing factor for the Renaissance.
* This article was originally published here
* This article was originally published here
Tobacco and e-cigarette promotions spark teens' use of nicotine products, study finds
Owning items that promote e-cigarettes and other alternative tobacco products doubles the likelihood that a young person will try these products, a new study led by the Stanford University School of Medicine has found. The finding illustrates the influence of such marketing on teenagers.
* This article was originally published here
* This article was originally published here
Researchers develop novel framework for tracking developments in optical sensors
Plasmonics and photonics have been drawing attention in both academia and industry due to their use in an extensive range of applications, one of which includes optical sensing. The development of optical sensing technology not only contributes to the scientific research community as a versatile tool, but also offers substantial commercial value for smart city and Internet of Things (IOT) applications due to its energy efficiency, lightweight, small size and suitability for remote sensing. Reinforcing its significance, Scientific American identified plasmonic sensing as one of the top 10 emerging technologies of 2018.
* This article was originally published here
* This article was originally published here
Eating ultra-processed foods will make you gain weight. Here's the scientific proof
For four weeks, 20 healthy volunteers checked into a research center hospital and were served a variety of tempting meals: cinnamon french toast, stir-fry beef with broccoli and onions, turkey quesadillas and shrimp scampi. Researchers scrutinized everything that was eaten and came away with the first hard evidence to support a long-held suspicion: Heavily processed foods could be a leading factor in America's obesity epidemic.
* This article was originally published here
* This article was originally published here
EU adopts powers to respond to cyberattacks
The European Union on Friday adopted powers to punish those outside the bloc who launch cyberattacks that cripple hospitals and banks, sway elections and steal company secrets or funds.
* This article was originally published here
* This article was originally published here
First anticoagulant approved for preventing VTE recurrence in children
(HealthDay)—Fragmin (dalteparin sodium) injection has been granted the first approval for subcutaneous use in preventing recurrence of symptomatic venous thromboembolism (VTE) in children aged 1 month or older, the U.S. Food and Drug Administration announced.
* This article was originally published here
* This article was originally published here
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