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New scientific information has yielded insights, including updates to our understanding of, and ability to model, the atmosphere, and the studies of the long-term effects of radiation on affected populations have yielded new information.
By examining possible trajectories for global economic development, technology adoption, and policy actions, the driving forces behind emissions, these scenarios help us assess a range of potential climate futures. levels of cooperation or competition among countries, technology adoption, and inequality) in terms of radiative forcing.
An international team of physicists has created what might seem like a contradiction in terms: a non-radiating source of electromagnetism. Maxwell’s equations tell us that accelerating charges radiate energy in the form of electromagnetic waves. cm above the non-radiating source prototype.
The team, led by Dongfang Zhang and Franz Kärtner at the Center for Free-Electron Laser Science in Hamburg, created their instrument by compressing bunches of electrons to ultra-short durations, using millimetre-wavelength terahertz radiation. Laser combo opens up futuristic terahertz technology. Terahertz manipulation.
The device, designed by John Monro III, managing director of Montrose Technology Inc, and simulated by Medich’s research group, delivers a more conformal treatment to ocular tumours than conventional brachytherapy approaches. The device would also shorten treatment from one to two weeks to less than 10 minutes. What is brachytherapy?
CT-free PET reduces radiation dose. But the CT scan performed alongside to obtain attenuation maps can deliver a substantial radiation dose, negating these low-dose benefits. The lutetium in the scintillator contains a small amount – less than 3% – of the radioisotope 176 Lu, which emits background radiation during the scan.
A highly efficient way to convert optical photons into terahertz radiation has been developed by researchers in the US and Germany. Terahertz radiation falls between infrared light and microwaves in the electromagnetic spectrum and has a range of potential applications including security scanning and medical imaging.
A wide range of technologies are available to reduce human intervention and increase efficiency in various tasks. Citing the ESTRO 2022 programme, she noted that many researchers are already developing adaptation and personalization for every part of the radiation treatment chain. Rogue One (to five) . And how low can we go?
As space missions venture ever further afield, spacecraft will inevitably be exposed to greater amounts of cosmic radiation that can damage or even destroy their onboard electronics. Cosmic radiation is ionizing radiation made up of a mixture of heavy ions and cosmic rays (high-energy protons, electron and atomic nuclei).
Targeted radionuclide therapy (TRT) can increase the effectiveness of immunotherapy, helping to eradicate metastatic cancer in mice even when the radiation dose is too low to destroy the cancer outright. NM600 can be used for both diagnostic imaging ( 86 Y-NM600) or delivery of therapeutic radiation ( 90 Y-NM600). 13:eabb3631).
What’s exercising management and educators specifically is the extent to which the core expertise and domain knowledge of radiotherapy physicists should evolve to reflect – and, in so doing, best support – the relentless progress of artificial intelligence (AI) and machine-learning technologies within the radiation oncology workflow.
There have been enormous improvements in radiation therapy over the last 20 years. During his studies at KIT (Karlsruhe Institute of Technology) he gained broad experience in different workflows in radiation therapy while analysing them. Want to take part in this webinar? Join the audience.
In radiation therapy, patient safety starts and ends with independent QA, a comprehensive programme of machine, patient-specific and workflow checks for identifying – and mitigating – human and system errors in an expanding universe of complex treatment variables. Jeff Kapatoes, Sun Nuclear Corporation.
Some scientists worry that studying how to shade the Earth from some of the sun’s heat is a slippery slope toward deployment of ‘solar radiation management’ without fully understanding the risks.
Because children are more sensitive to ionizing radiation than adults, using the lowest possible radiation dose to obtain diagnostic quality images is the goal of every radiology professional performing paediatric CT. Technology advances improve imaging for paediatric patients.
While neither idea was ever implemented, both were examples of a “technosignature” or a “technomarker” – a tell-tale indication of past or present technological activity, pointing out the existence of an advanced planetary civilization. Frank is looking at what kind of signature a planet’s technology might leave in its spectra.
An electromagnetic analogue for a black hole laser – a system that could theoretically amplify Hawking radiation from the event horizon of a black hole and make it observable – has been proposed by Haruna Katayama of Hiroshima University in Japan. If built, the device could even advance technologies such as quantum computing.
On the morning of Wednesday 3 February 2021, the research reactor at the National Institute of Standards and Technology (NIST), just outside Washington, DC, was starting to come back online after routine maintenance. No indications of elevated radiation levels outside the building.” Shortly after 9 a.m.,
Investment and incentives for clean technologies under the Inflation Reduction Act. Solar radiation management If I’ve missed something you think is really important to US climate policy, I guess that only goes to prove my point about the breadth and depth of the field. SEC rules on disclosure of climate-related risks.
To achieve this, biomedical researchers in Japan have teamed up with their colleagues in astronomy to adapt technology used in space observations for biomedical research. The post Researchers exploit astronomy technology for biomedical imaging appeared first on Physics World. In images of 125 I (in the 26–29?keV
“I’d like to reflect on the relationship between the successes we’ve had with physics and technology – and the relative neglect of the biology – in radiation therapy.” I’ve no doubt that we have the technical ability, but do we have the required understanding of the body’s response to the radiation to move this frontier further?”.
The first thermophotovoltaic cells with an efficiency of more than 40% – higher than any existing solid-state heat engine, and exceeding even the average efficiency of turbine-based power generation – have been fabricated by researchers at the Massachusetts Institute of Technology (MIT) and the US National Renewable Energy Laboratory (NREL).
Radiotherapy plays an essential role in the management of cancer, with roughly half of all cancer patients receiving radiation as part of their treatment. Each of these steps helped to improve dose coverage of the tumour being targeted, while reducing unwanted radiation being delivered to normal tissues within the body.
But the nuclear tests, and particularly the atmospheric tests, were enormously destructive to the land and communities that were exposed to their explosive power and radiation. The use of nuclear weapons would have catastrophic humanitarian, environmental and geopolitical consequences.
In particular, they consider how to boost the chances of a particle experiencing the Unruh effect by exposing it to electromagnetic radiation as it is accelerated. This is resonant absorption, of the kind that any atom would undergo when exposed to radiation of the right frequency.
A collaborative team from the University of California, Davis and Hamamatsu Photonics has now developed radiation detectors with an average coincidence timing resolution of 32 ps. First author Sun Il Kwon and colleagues achieved dPEI by combining three technology innovations. They report their findings in Nature Photonics.
Effectively mitigating it will require a multifaceted approach that incorporates technological solutions as well as behaviour change at the governmental, corporate and individual levels. Hari Chohan , nuclear radiation analyst, UK Atomic Energy Authority. Rosemary Pickering , senior sustainable business analyst, Farfetch.
NIF can also be used to generate x-rays and gamma-rays which are used to study radiation hardness of weapons components and assemblies. At the same time, NIF is part of a new technological arms race. As with so many technological breakthroughs, the most powerful can also be the most destructive. A bumpy road to fusion.
Workers in facilities that produce and use EtO as well as people living near facilities that release it into the atmosphere are at risk of unsafe exposures even when the facilities are using the best available technologies to handle and contain it. Have I been exposed to ethylene oxide?
This is due in no small part to the “ nuclear bros ”: an active and seemingly tireless group of nuclear power advocates who dominate social media discussions on energy by promoting SMRs and other “advanced” nuclear technologies as the only real solution for the climate crisis.
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Physicists at the Royal Institute of Technology in Stockholm, Sweden, have developed a new technique to rapidly detect and characterize so-called special nuclear materials like plutonium and enriched uranium. The team members demonstrated their new technique using a prototype radiation portal monitor they developed in their laboratory.
Precision radiation-medicine specialist Elekta has long been a main-mover in the field of adaptive radiotherapy (ART), in which delivered dose is monitored for clinical acceptability and modified as needed during the course of treatment. Valentina Vanoni: “ART is a new paradigm in radiation oncology.” The adaptive mindset.
Recent innovations of computer calculation and artificial intelligence in radiotherapy resulted in rapid advancements in various aspects in cancer treatment such as treatment planning, patient-specific quality assurance, radiation dosimetry, and education for patients and radiation staff.
The efficiency of some radiation detectors can be boosted by adding nanostructure arrays to scintillator materials. Scintillation occurs in a range of materials – solid, liquid and gas – when they are exposed to ionizing radiation. Unified theory.
With a single radiation treatment, a patient’s irregular heartbeat will be corrected; but there’s a catch. He and his collaborators developed an algorithm that tracks the diaphragm – the predominant driver of internal organ motion during a radiation treatment – in real-time using low-energy X-rays. Courtesy: Phys.
Rectennas (short for rectifying antennas) consist of two parts: an antenna, which absorbs electromagnetic radiation, and a diode, which converts the absorbed energy into direct current. If you can capture heat radiating into deep space, then you can get power anytime, anywhere,” he says. “The
Photon-counting technology enables dramatic improvements in diagnostic imaging, including increased resolution and a reduction in radiation dose by up to 45% over conventional CT detectors. Speaking at a media briefing, Fischer described the main differences between conventional and photon-counting CT technology.
One of the most promising applications of artificial intelligence technologies is the identification of tumors from high-resolution medical imagery. While the use of CT technology helps preserve specimens and generate very useful data, the images themselves present their own challenges. Read original article ?
In this episode of the Physics World Weekly podcast, the space physicist Xiaojia Zhang explains how whistler waves in Earth’s radiation belts are accelerating high-energy electrons towards the North and South poles.
The convergence of big-data analytics with secure and scalable cloud-based data storage presents an inflection point in radiation oncology – an opportunity to reimagine operational best practice in the planning, delivery and management of radiation therapy while personalizing cancer treatment to meet the clinical needs of individual patients.
South Africa has completed the construction of two new nuclear labs that will be used to train students and develop novel nuclear-physics detector technology. The UK’s Science and Technology Funding Council provided £500,000 from its Global Challenge Research Fund to the project while South African universities also financially contributed.
According to the American Institute of Physics, a new ultra-thin solar cell technology could help with the creation of radiation-resistant solar cells.
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