Current Nuclear Weapons News and Events

Current Nuclear Weapons News and Events, Nuclear Weapons News Articles.
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Lack of symmetry in qubits can't fix errors in quantum computing, might explain matter/antimatter
A team of quantum theorists seeking to cure a basic problem with quantum annealing computers--they have to run at a relatively slow pace to operate properly--found something intriguing instead. (2021-02-22)

Atomic nuclei in the quantum swing
The extremely precise control of nuclear excitations opens up possibilities of ultra-precise atomic clocks and powerful nuclear batteries. (2021-02-19)

A new piece of the HIV infection puzzle explored
Researchers from the European Molecular Biology Laboratory and Heidelberg University Hospital combine high-resolution imaging to observe the infection process in cell nuclei, opening the door for new therapeutics. (2021-02-18)

Physics of tumours: Cancer cells become fluidised and squeeze through tissue
Working with colleagues from Germany and the US, researchers at Leipzig University have achieved a breakthrough in research into how cancer cells spread. The team of biophysicists led by Professor Josef Alfons Käs, Steffen Grosser and Jürgen Lippoldt demonstrated for the first time how cells deform in order to move in dense tumour tissues and squeeze past neighbouring cells. They have now published their findings in 'Physical Review X'. (2021-02-18)

First report on mass shootings from Columbia University database
A study by researchers at Columbia University's Center of Prevention and Evaluation finds that most mass murders are not committed by individuals with serious mental illness. (2021-02-18)

CT scans of Egyptian mummy reveal new details about the death of a pivotal pharaoh
A CT scan study of the mummy of Pharaoh Seqenenre-Taa-II, an Egyptian ruler whose death eventually helped reunite the kingdom, revealed new details about how the king died. A recent paper suggests that the pharaoh died close to the battlefield and was ceremoniously executed by several people using Hyksos weapons. Additionally, the computer-processed X-rays revealed his embalmers had skillfully concealed some of the wounds, implying professional mummification of the body, despite its poor preservation. (2021-02-17)

Evolution's game of rock-paper-scissors
A group of scientists at Lehigh University led by Gregory Lang, associate professor in the Department of Biological Sciences, has recently provided empirical evidence that evolution can be nontransitive. Lang and his team identify a nontransitive evolutionary sequence through a 1,000-generation yeast evolution experiment. In the experiment, an evolved clone outcompetes a recent ancestor but loses in direct competition with a distant ancestor. (2021-02-16)

Plant as superhero during nuclear power plant accidents
A collaborative study by a group of scientists from Iwate University, The University of Tokyo and Shimane University, Japan demonstrated for the first time that two ATP binding cassette proteins ABCG33 and ABCG37 function as potassium-independent cesium uptake carriers. (2021-02-16)

Molecular imaging determines effectiveness of novel metastatic breast cancer treatment
Molecular imaging can successfully predict response to a novel treatment for ER-positive, HER2-negative metastatic breast cancer patients who are resistant to hormonal therapy. According to research published in the February issue of The Journal of Nuclear Medicine, positron emission tomography (PET) imaging using an imaging agent called 18F-fluoroestradiol can help to determine which patients could benefit from treatments that could spare them from unnecessary chemotherapy. (2021-02-16)

Light used to detect quantum information stored in 100,000 nuclear quantum bits
Researchers have found a way to use light and a single electron to communicate with a cloud of quantum bits and sense their behaviour, making it possible to detect a single quantum bit in a dense cloud. (2021-02-15)

Survey: Most Americans say they'll continue health precautions after COVID-19
A new national survey of more than 2,000 Americans by The Ohio State University Wexner Medical Center finds most plan to continue many of the pandemic precautions in the name of public health, even when the pandemic is over. (2021-02-08)

Joint radionuclide therapy-immunotherapy approach effective in prostate cancer model
A combination of radionuclide therapy and immunotherapy has proven successful in slowing the progression of prostate cancer and increasing survival time, according to new research published in the February issue of The Journal of Nuclear Medicine. The results of the murine study indicate that radionuclide therapy promotes prostate cancer immunogenicity, provoking a cellular response that makes the tumors more receptive to immunotherapy. (2021-02-08)

Battling bugs help solve mysteries of weapon evolution
Scientists at the University of Arizona outfitted bugs with body armor and pitted them against each other in staged wrestling matches, all in the name of science. The findings shed light on how evolution has shaped the arsenal of weapons in the animal kingdom. (2021-02-04)

Charge radii of exotic potassium isotopes challenge nuclear structure theory
In nuclear physics so-called magic number are such nuclear proton and/or neutron numbers, for which the nucleus is more stable compared to neighboring isotopes on the nuclear chart. An international research team studied the nuclear charge radii of potassium isotopes. Isotopes were studied by using the collinear resonance ionization spectroscopy technique. The results indicated that the potassium isotope with a neutron number of 32 does not conform with criteria of magic neutron number. The results were published in Nature Physics journal. (2021-02-04)

Dynamics of radiocesium in forests after the Fukushima disaster: Concerns and some hope
The 2011 nuclear disaster at Fukushima, Japan caused a great amount of radioactive cesium to spread to nearby forests. Now, in a chapter in the latest technical document of the International Atomic Energy Agency, researchers from Japan, in collaboration with experts in Europe, explore the dynamic flow of these radionuclides in forest ecosystems. Their compilation of data and analyses on radiocesium dynamics will help us develop better forest remediation strategies. (2021-02-03)

Study finds consensus for arming school resource officers, division on arming teachers and other staff
A new study examined public support for arming school employees. The study found consensus for arming school resource officers, but division over whether to arm teachers and nonteaching staff. The research has clear implications for policy, including the possibility that support for arming school staff may diminish over time as young people (who are less supportive) make up a larger share of voters. (2021-02-03)

Aging-US: Sulforaphane promotes C. elegans longevity and healthspan
'The results in this Aging-US research output, indicate that sulforaphane prolongs the lifespan and healthspan of C. elegans through insulin/IGF-1 signaling.' (2021-02-03)

Pollinator host-switches and fig hybridization dominate fig-wasp coevolution
Together with colleagues from 11 institutions from home and abroad, researchers from the Xishuangbanna Tropical Botanical Garden (XTBG) of the Chinese Academy of Sciences have recently shown that the fig hybridization mediated by pollinator host-switching in the obligate fig-wasp pollination system is more common than previously thought. (2021-02-02)

Paving the way for effective field theories
This special issue, published in EPJ A, presents a coherent collection of work by theoretical experts from around the world regarding the use of effective field theories. Several unanswered questions are addressed and clarified, leading to detailed assessments of the philosophical foundations of effective field theories. (2021-02-01)

Optimized LIBS technique improves analysis of nuclear reactor materials
In a new study, investigators report an optimized approach to using laser-induced breakdown spectroscopy (LIBS) for analyzing hydrogen isotopes. Their new findings could enable improved rapid identification and measurement of hydrogen and other light isotopes that are important in nuclear reactor materials and other applications. (2021-02-01)

A full-scale prototype for muon tomography
In this article of EPJ Plus, researchers build on previous studies into detection technologies and reconstruction algorithms for muon tomography, to develop a full-scale muon tomograph prototype. (2021-02-01)

Size matters: How the size of a male's weapons affects its anti-predator tactics
When males have to fight for reproductive rights, having larger weapons such as horns gives them an edge. However, this can also limit their mobility, making them more vulnerable to predators. In a recent study, scientists from Japan proved, for the first time, that males of a species adopt different anti-predator tactics--tonic immobility or escape--based on the size of their weapons, opening doors to a better understanding of the evolution of animal behaviors. (2021-01-28)

Forests with diverse tree sizes and small clearings hinder wildland fire growth
A new 3D analysis shows that wildland fires flare up in forests populated by similar-sized trees or checkerboarded by large clearings and slow down where trees are more varied. (2021-01-27)

Change of course on the journey to the island of stability
An international research team succeeded in gaining new insights into the artificially produced superheavy element flerovium, element 114, at the accelerator facilities of the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Under the leadership of Lund University in Sweden and with significant participation of Johannes Gutenberg University Mainz (JGU) as well as the Helmholtz Institute Mainz (HIM) in Germany and other partners, flerovium was produced and investigated to determine whether it has a closed proton shell. (2021-01-26)

Nuclear physicist's voyage towards a mythical island
Theories were introduced as far back as the 1960s about the possible existence of superheavy elements. Their most long-lived atomic nuclei could give rise to a so-called ''island of stability'' far beyond the element uranium. However, a new study, led by nuclear physicists at Lund University, shows that a 50-year-old nuclear physics manifesto must now be revised. (2021-01-26)

Nuclear war could trigger big El Niño and decrease seafood
A nuclear war could trigger an unprecedented El Niño-like warming episode in the equatorial Pacific Ocean, slashing algal populations by 40 percent and likely lowering the fish catch, according to a Rutgers-led study. The research, published in the journal Communications Earth & Environment, shows that turning to the oceans for food if land-based farming fails after a nuclear war is unlikely to be a successful strategy - at least in the equatorial Pacific. (2021-01-25)

Alpha particles lurk at the surface of neutron-rich nuclei
Scientists from an international collaboration have found evidence of alpha particles at the surface of neutron-rich heavy nuclei, providing new insights into the structure of neutron stars, as well as the process of alpha decay. (2021-01-21)

Expanded PET imaging time window adds flexibility for neuroendocrine tumor patients
The imaging time window of 64Cu-DOTATATE positron emission tomography/computed tomography (PET/CT) for patients with neuroendocrine neoplasms can be expanded from one hour to three hours post-injection, according to new research published in the January issue of The Journal of Nuclear Medicine. In a head-to-head comparison of scans performed at the two time intervals, there were no significant differences in the number of lesions detected, and tumor-to-normal tissue ratios remained high in all key organs. (2021-01-20)

Alcohols exhibit quantum effects
Skoltech scientists and their colleagues from the Russian Quantum Center revealed a significant role of nuclear quantum effects in the polarization of alcohol in an external electric field. The new research provides insight into the properties of liquid dielectrics. The core assumption of the model pertains to a novel understanding of dielectric polarization phenomena in polar liquids by means of nuclear quantum effects. (2021-01-19)

Helium nuclei at the surface of heavy nuclei discovered
Scientists are able to selectively knockout nucleons and preformed nuclear clusters from atomic nuclei using high-energy proton beams. In an experiment the existence of preformed helium nuclei at the surface of several tin isotopes could be identified in a reaction. The results confirm a theory, which predicts the formation of helium clusters in low-density nuclear matter and at the surface of heavy nuclei. (2021-01-15)

Exposure to violence takes a toll on the socioemotional well-being of Californians
A survey of Californians shows that exposure to violence has pervasive social and emotional impacts on people, especially when firearms are involved. (2021-01-14)

Do as the Romans: Power plant concrete strengthens with time
Nagoya University scientists find a rare mineral in nuclear power plant walls, significantly improving their strength following years of full operation. (2021-01-13)

Limits of atomic nuclei predicted
Novel calculations have enabled the study of nearly 700 isotopes between helium and iron, showing which nuclei can exist and which cannot. In an article published in Physical Review Letters, scientists from TU Darmstadt, the University of Washington, the Canadian laboratory TRIUMF, and the University of Mainz report how they simulated for the first time using innovative theoretical methods a large region of the chart of nuclides based on the theory of the strong interaction. (2021-01-13)

Potential jurors favor use of artificial intelligence in precision medicine
Physicians who follow artificial intelligence (AI) advice may be considered less liable for medical malpractice than is commonly thought, according to a new study of potential jury candidates in the U.S. Published in the January issue of The Journal of Nuclear Medicine (JNM). The study provides the first data related to physicians' potential liability for using AI in personalized medicine, which can often deviate from standard care. (2021-01-11)

How a large protein complex assembles in a cell
A team of ETH researchers led by Karsten Weis has developed a method that allows them to study the assembly process for large protein complexes in detail for the first time. As their case study, the biologists chose one of the largest cellular complexes: the nuclear pore complex in yeast cells. (2020-12-22)

Multi-messenger astronomy offers new estimates of neutron star size and universe expansion
Multi-messenger astronomy allows researchers to put new constraints on the radius of a typical neutron star and provide a novel calculation of the Hubble constant. (2020-12-17)

New theranostic approach reduces tumor volume and increases survival in NET study
A pair of copper radionuclides that target the somatostatin receptor overexpressed in neuroendocrine tumors has proven successful in identifying tumors and improving survival. According to new research published in the December issue of The Journal of Nuclear Medicine, the imaging agent 64Cu-CuSarTate produced high-quality positron emission tomography (PET) images in a mouse model of neuroendocrine tumors, while its therapeutic counterpart, 67Cu-CuSarTate, was highly effective in reducing tumor volume and extending lifespan. (2020-12-16)

New diagnostic isotope to enhance targeted alpha therapy for cancer
Researchers in the DOE Isotope Program have developed an effective radionuclide, cerium-134, as a paired analogue of actinium and thorium that can be imaged using positron emission tomography (PET). (2020-12-16)

Sights set on curbing gun crime
A community or sub-culture encouraging young men's exposure and obsession with guns - as well as ready access to firearms and drugs - can make gun violence 'all too easy', with Flinders University experts promoting a new direction on managing the global problem. Flinders criminologists conclude that the need to 'dematerialise' the attraction to gun has ''never been greater'' than ''in a post-COVID-19 world in which guns have gained greater salience in many countries''. (2020-12-15)

PET imaging tracer proves effective for diagnosing and managing rare CNS B-cell lymphoma
Positron emission tomography (PET) imaging with 68Ga-pentixafor is an effective diagnostic tool for central nervous system (CNS) B-cell lymphoma, according to a proof-of-concept study published in the December issue of The Journal of Nuclear Medicine. (2020-12-10)

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