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• Known for crafting one of the world’s first posture-correcting seats, centering on the concept of “sitting on your ischium bones,” ayur-chair’s products are designed to help relieve lower back tension, as well as improve the sitter’s posture and concentration.

• The Florida Keys Mosquito Control District (FKMCD) operation started in earnest with several DC-3 and smaller aircraft dispersing adulticide around Monroe County, which spans hundreds of small islands in addition to the larger inhabited islands making up the Florida Keys. Many of the keys comprise marshland, a prime breeding ground for mosquitos.

• To reduce mosquito activity and the risk of West Nile virus, the Health Department will conduct an adulticide treatment in Brooklyn.

• Adult mosquito trapping, surveillance, larvicide and adulticide treatments have been underway throughout the town since June and will continue to the end of the season, which is typically through August.

• An aircraft releases aerial application of larvicide and adulticide to keep mosquitoes contained at Craney Island dredged material management area in Portsmouth, Virginia. Hampton Roads consistently ranks high among the nation’s worst regions for mosquito populations, according to the Virginia Mosquito Control Association. (U.S. Army file photo)

• The Town contracts a professional company to set out traps, collect and test for West Nile Virus (WNV) and should WNV be identified, larvicide and adulticide as necessary. Town staff will be actively looking for areas of mosquito breeding and treating those areas as necessary. Residents and businesses can help the Town by looking for areas mentioned below and eliminating sources and habitats for mosquitoes.

• At the beginning, he wanted to be a megaphone for what he learned at university: he wanted to enable people who were not able to attend to learn the same things he did. His ambitions, however, became more and more political.  With his art, he tries to provide a new form of platform for political discussion: “we need a way to talk about this stuff that isn’t awkward, that isn’t antagonistic. And podcasting is a canvas [for that]”. 

• The digital distribution of on-demand audio content — commonly known as podcasting — has been growing steadily in recent years. To analyse industry potential in the Caribbean and improve career opportunities for young content creators, the EU-funded UNESCO programme Transcultura: Integrating Cuba, the Caribbean and the European Union through Culture and Creativity organised the online debate ‘Waves between the Caribbean and Europe: Connecting Creative audiences through Podcasts’ on 22 September 2023.

• Similar to LIGO, LISA will detect gravitational waves by bouncing laser light along extended arms, measuring the minuscule variations in arms length. But while LIGO has arms just 4 kilometers long, LISA could have arms millions of kilometers long. Where LIGO can detect powerful transient bursts of gravitational waves with frequencies under a kilohertz, such as the mergers of black holes, LISA will detect millihertz waves and will be able to detect not just black hole mergers, but the gradual inspiraling of supermassive black holes and possibly even the remnant gravitational waves of the big bang.

• Astronomers from Australia and Taiwan report the discovery of millihertz quasi-periodic oscillations in a neutron-star low-mass X-ray binary known as 1RXS J180408.9−342058. The discovery, detailed in a paper published September 3 on the arXiv preprint server, could help astronomers better understand the nature and behavior of X-ray binary sources.

• Although scientists have observed ambient seismic noise for more than a century, free oscillations of Earth — vibrations with frequencies of 2 to 7 millihertz that are continuous and persist globally — were not discerned until the aftermath of the magnitude-9.5 earthquake that struck Chile in 1960, when scientists recorded standing waves in the solid earth. At the time, it was thought that Earth’s free oscillations were faint residual tectonic tremors left over from large earthquakes and that the phenomenon was transient.

• Given that these orbits last approximately 20 days, the passing of gravitational waves in the microhertz frequency range impact them particularly. Blas and Jenkins ascertained that these systems could also be potential detectors of these types of gravitational waves.

• This new temperature is six times lower than the previous record and marks the first time a gas was cooled below one nanokelvin (one billionth of a degree). At absolute zero (-273? Celsius or -460? Fahrenheit), all motion stops, except for tiny atomic vibrations, since the cooling process has extracted all energy from the particles.

• This new temperature is six times lower than the previous record, and marks the first time that a gas was cooled below 1 nanokelvin (1 billionth of a degree). At absolute zero (-273 deg Celsius or -460 deg Fahrenheit), all motion stops, except for tiny atomic vibrations, since the cooling process has extracted all energy from the particles. By improving cooling methods, scientists have succeeded in getting closer to absolute zero.

• OPTIMA is a 4.5-year three-phase program that will involve several contractors, so additional contracts are expected. In the project's first phase, Georgia Tech seeks to develop a low-energy single-transistor-size multiply compute element with 1 femtojoule per bit energy to data ratio, five-nanosecond read speed, six F2 nominal size, and 1,010 read endurance.

• Important working principles of a biological synapse have been emulated, such as paired-pulse facilitation (PPF), short-term plasticity (STP), long-term plasticity (LTP), spike-timing dependent plasticity (STDP), and spike-rate dependent plasticity (SRDP). Most amazingly, energy consumption of the device can be reduced to a femtojoule level per synaptic event, which is a value magnitudes lower than previous reports. It rivals that of a biological synapse. In addition, the organic artificial synapse devices not only provide a new research direction in neuromorphic electronics but even open a new era of organic electronics.

• A more ambitious goal is to get the energy of the learning pulses to match that of the artificial neuron’s output pulses. Right now, each output voltage spike carries less than one attojoule of energy. But it takes at least 3 attojoules to budge the nanoclusters and cause learning. So, for now, learning has to happen “off-line” because one neuron can’t teach another without assistance. (Even so, once trained, the system would operate faster and with lower energy than any other.)

• Todd Ditmire, director of the High Intensity Laser Science Group at the University of Texas at Austin, reported at this week’s meeting that a new type of glass should be able to handle the intense pulses of light needed to create an exawatt laser. The glass would be doped and used to create devices called amplifiers–when light from a laser shines on the glass amplifier, ions in the glass absorb the light and re-emit it at higher energy. “The glass is just a host–it’s a transparent material that holds the ions,” says Ditmire.

• Ditmire says his near-petawatt laser outruns NIF’s laser, and he even has plans for making it more powerful by using some special laser glass which can amplify the power to 100 kJ, about 500 times more. Building an exawatt laser would take up to 10 years to achieve, with proper governmental and private funding, he says.

• "This bolometer does that accurately and reliably at 1 femtowatt or below. That's a trillion times less power than used in typical power calibrations."