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Covid-19 is a respiratory infection that damages the lungs. New evidence has emerged that Covid-19 also causes damage to the heart even with no preexisting conditions:

Objective To explore the association between cardiac injury and mortality in patients with COVID-19.

Design, Setting, and Participants This cohort study was conducted from January 20, 2020, to February 10, 2020, in a single center at Renmin Hospital of Wuhan University, Wuhan, China; the final date of follow-up was February 15, 2020. All consecutive inpatients with laboratory-confirmed COVID-19 were included in this study.

Main Outcomes and Measures Clinical laboratory, radiological, and treatment data were collected and analyzed. Outcomes of patients with and without cardiac injury were compared. The association between cardiac injury and mortality was analyzed.

Continue reading “Association of Cardiac Injury With Mortality in Hospitalized Patients With COVID-19 in Wuhan, China” | >

Qualcomm is getting ready to usher in a new generation of super low-power Bluetooth earbud chips.

The QCC514X and the QCC304X will support Qualcomm’s TrueWireless Mirroring technology. This means that wireless connectivity is secured with a single earbud that is paired with another. When the user removes the primary earbud, the other mirroring bud takes over the connection without any interruption.

The units will also support active control, or noise cancellation, bringing the popular feature commonly found on high-end units to mid-priced and entry-level buds. Qualcomm says its hybrid ANC feature allows for ambient noise leak-through that allows substantial but not total external noise suppression. That makes it easier for users to speak with others while wearing the buds or to more easily hear car horns or alarms.

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In recent years, researchers worldwide have been trying to develop sensors that could replicate humans’ sense of touch in robots and enhance their manipulation skills. While some of these sensors achieved remarkable results, most existing solutions have small sensitive fields or can only gather images with low-resolutions.

A team of researchers at UC Berkeley recently developed a new multi-directional tactile sensor, called OmniTact, that overcomes some of the limitations of previously developed sensors. OmniTact, presented in a paper pre-published on arXiv and set to be presented at ICRA 2020, acts as an artificial fingertip that allows robots to sense the properties of objects it is holding or manipulating.

“Our lab recognized the need for a sensor for general robotic manipulation tasks with expanded capabilities than current ,” Frederik Ebert, one of the researchers who carried out the study, told TechXplore. ‘“Existing tactile sensors are either flat, have small sensitive fields or only provide low-resolution signals. For example, the GelSight sensor provides high resolution (i.e., 400×400 pixel) images but is large and flat, providing sensitivity on only one side, while the OptoForce sensor is curved, but only provides force readings at a single point.”

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Micro aerial vehicles (MAVs) could have numerous useful applications, for instance, assisting humans in completing warehouse inventories or search and rescue missions. While many companies worldwide have already started producing and using MAVs, some of these flying robots still have considerable limitations.

To work most effectively, MAVs should be supported by an efficient pose estimation system. This is a system or method that can calculate a drone’s position and attitude, which can then be used to control its flight, adjust its speed and aid its navigation while it is operating autonomously and when controlled remotely.

Researchers at Huazhong University of Science and Technology in China have recently developed a new system for the pose estimation of MAVs in indoor environments. Their new approach, outlined in a paper pre-published on arXIv and set to be published in IEEE Transactions on Industrial Electronics, leverages existing WiFi infrastructure to enable more effective navigation in small and agile drones.

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The Army has a message for its retirees: Uncle Sam wants you to help fight the novel coronavirus.

A message sent by Defense Finance and Accounting Services, which processes and dispenses retiree pay, asked troops who had previously served in specific health care specialties to consider “re-joining the team” to address the current pandemic crisis. It’s signed by Lt. Gen. Thomas Seamands, deputy chief of staff for U.S. Army Personnel, G-1.

“We need to hear from you STAT!” reads the message, obtained by Military.com.

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Photo: EPNAC

TAMPA, Fla. — When Special Operations Command set out to create what would be popularly known as the ‘Iron Man suit’ seven years ago, developers assumed that the state-of-the-art in body armor would not improve much over the next few years.

That assumption led the command down a development path that would actually make the Tactical Assault Light Operator Suit resemble the comic book hero with heavy armor from head to toe and a power system and exoskeleton needed to help the operator move in the bulky suit.

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When asked, “What kind of superpower would you like to have,” most of us say “invisibility.” Even Derek Jeter. Invisibility, like the ability to fly, is the stuff of childhood dreams. And for decades, cloaking devices have been a favorite plot device of science-fiction and fantasy classics like “Star Trek,” “Harry Potter” and “Doctor Who.”

Today, the F-35 strike fighter jet makes this fantasy a reality, as it navigates airspace with the most advanced powers of hide and seek. Its multiple stealth devices – radar-absorbing materials and internal infrared sensors – comprise the ultimate invisibility cloak. In the F-35 and elsewhere, stealth and cloaking technologies have become more comprehensive and durable, with applications for military and other industries. This is what happens when science meets imagination.

“With improvements, tanks or planes can be cloaked from human observation, car trunks can be made see-through, blind spots can be cloaked to be seen easily or cloaking can even be used as art or included for architectural effects,” said Joseph Choi, a researcher with the University of Rochester’s Institute of Optics.

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