#σκόρδο #σκόρδα #διατροφή Τι Θα Συμβεί Στο Σώμα Με 1 Σκόρδο Την Ημέρα (Ασπίδα Υγείας)!

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Τι Θα Συμβεί Στο Σώμα Με 1 Σκόρδο Την Ημέρα (Ασπίδα Υγείας)!

1/9/2021

#παντζάρια #διατροφή #υγεία Τι Θα Συμβεί Στο Σώμα Αν Τρώτε Παντζάρια (Υπερτροφή)!

 

#παντζάρια #διατροφή #υγεία

Τι Θα Συμβεί Στο Σώμα Αν Τρώτε Παντζάρια (Υπερτροφή)!

1/9/2021

 

The bots are not as fair-minded as they seem

28 May 2021 James Dacey

Artificial intelligence (AI) technologies are designed to replicate human capabilities, and in some cases improve upon them. Lifelike robots are physical examples of AI technology, but it is the digital AI systems that already have a ubiquitous influence on our daily lives – from facial recognition software to decision-making tools used by banks, recruiters and the police. Too often, these systems can reflect preexisting social inequalities.

 

Nanomechanical qubit could be highly stable

25 Aug 2021 Isabelle Dumé

Robust oscillator The nanomechanical resonator. (Courtesy: F. Pistolesi/University of Bordeaux)

A quantum bit based on a vibrating carbon nanotube and a pair of quantum dots could be unusually resistant to noise. Although the new nanomechanical qubit is currently at the proposal stage, calculations by Fabio Pistolesi of the French National Centre for Scientific Research (CNRS) at the University of Bordeaux and colleagues in the US and Spain indicate that its so-called “decoherence time” – a measure of how long fragile quantum information can survive in a noisy environment – would be remarkably long, making it an attractive platform for quantum computing.

 

Blood test detects brain tumours at an early stage

31 Aug 2021 Tami Freeman

Rapid response: A cost-effective spectroscopic liquid biopsy can identify both small and low-grade gliomas. (Courtesy: Dxcover)

Detecting a brain tumour at the earliest possible stage enables faster treatment and safer surgery, which are essential to improve the patient’s chance of a good clinical outcome. But brain tumour diagnosis is a difficult task, as common symptoms such as headaches or memory change are not specific to cancer. As such, many tumours remain undetected until they are larger or of a higher grade. A research team in the UK has now demonstrated that spectroscopic liquid biopsy can detect both small and low-grade gliomas – and could increase the likelihood of early diagnosis.

 

Flexible X-ray detector constructed without harmful heavy metals

29 Aug 2021

High detection sensitivity: A flexible metal–organic framework is incorporated into a prototype wearable X-ray detector. (Courtesy: adapted from Nano Letters 10.1021/acs.nanolett.1c02336, 2021)

A wearable, flexible X-ray detector that is constructed without using harmful heavy metals has been developed by researchers from China and the US. The prototype, which is made from metal–organic frameworks layered with gold electrodes and plastic, could provide a safer and more environmentally friendly route to the next generation of radiology devices.

 

Low-dose radiation plus immunotherapy can eliminate metastatic cancer in mice

24 Aug 2021

86Y-NM600 uptake in mice with a single B78, NXS2 or 4T1 tumour (arrowheads). (Courtesy: Sci. Transl. Med. 13:eabb3631)

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. That’s the conclusion of a study by researchers at the University of Pittsburgh School of Medicine and the University of Wisconsin-Madison. Their findings, published in Science Translational Medicine, may lead to a new method for treating metastatic cancer, particularly for immunologically “cold” tumours that do not respond to immunotherapy.

 

Were high-energy neutrinos from a supernova detected 34 years ago?

31 Aug 2021

Burning bright: image of SN1987A taken by the European Southern Observatory’s Schmidt Telescope. (Courtesy: ESO)

Data collected more than thirty years ago contain what could be evidence of high-energy neutrinos generated by a supernova. That is the claim of Yuichi Oyama, a physicist at the KEK research institute in Japan, who worked on one of two experiments that he says appear to have intercepted such particles from the SN1987A event but which did not release the relevant data at the time. The find could help explain the origin of the most energetic cosmic rays, but other experts reckon the evidence does not stack up.

 

Solar polarization paradox resolved at last

27 Aug 2021

Light source Image of the solar atmosphere showing a coronal mass ejection. (Courtesy: NASA/SDO)

A paradox that puzzled a generation of solar and atomic physicists – and occasionally pitted theories from one field against the other – has been resolved. The paradox concerns the polarization of light at a specific point in the solar spectrum, and previous attempts to explain it required either an extreme reduction in the Sun’s magnetic field (which solar physicists deemed unlikely) or changes to the physics of atom-photon interactions (which atomic physicists did not observe).

Πως Να Απαλλαγείτε Από ΔΥΣΚΟΙΛΙΟΤΗΤΑ; 14 ΦΥΣΙΚΟΙ ΤΡΟΠΟΙ ΑΝΤΙΜΕΤΩΠΙΣΗΣ

Πως Να Απαλλαγείτε Από ΔΥΣΚΟΙΛΙΟΤΗΤΑ; 14 ΦΥΣΙΚΟΙ ΤΡΟΠΟΙ ΑΝΤΙΜΕΤΩΠΙΣΗΣ

απο ακαδημεια υγειας 29/8/2021

 

Electron interaction with heavy nucleus calculated from first principles

24 Aug 2021

Effective theorists: Sonia Bacca (left), Bijaya Acharya (centre) and Joanna Sobczyk. (Courtesy: Sabrina Hopp/Angelika Stehle)

The interaction between an electron and a calcium-40 nucleus has been calculated from first principles for the first time. Physicists in Germany and the US led by Joanna Sobczyk, Sonia Bacca and Bijaya Acharya at Johannes Gutenberg University Mainz used “chiral effective field theory” to account for the complex interactions that occur when an electron scatters from calcium-40 nuclei and validated their model using data from experiments.

 

An illustrated guide to relativity

27 Aug 2021 Laura Hiscott

Taken from the August 2021 issue of Physics World where it first appeared under the headline "Relativity, at top speed". Members of the Institute of Physics can enjoy the full issue via the Physics World app.

Train of thinking Thought experiments involving trains are a helpful way of exploring Einstein’s theory of relativity. (Courtesy: iStock/Leonid Andronov)

Laura Hiscott reviews Reimagining Time: a Light-Speed Tour of Einstein’s Theory of Relativity by Tanya Bub and Jeffrey Bub. Einstein’s special theory of relativity may be the best example there is of fact being stranger than fiction. I don’t know what human imagination could have conjured such a bizarre construct, unprompted by hard experimental data.

 

Finnish BNCT pioneers set their sights on clinical translation to the hospital campus

27 Aug 2021 Sponsored by Siemens Healthineers

Clinical translation: the new BNCT treatment room at Helsinki University Hospital, showing the beam-shaping assembly (left), robotic couch (centre) and in-room CT scanner (right). (Courtesy: Neutron Therapeutics)

Helsinki University Hospital is working with industry partners to realize the clinical potential of boron neutron capture therapy (BNCT) for complex cancer treatments. Boron neutron capture therapy (BNCT) is a biologically guided radiotherapy modality that has shown significant promise in clinical trials for the treatment of malignant brain tumours and locally recurrent head-and-neck cancers – complex indications that are difficult to address using conventional radiotherapy techniques. Now, clinicians and physicists at Helsinki University Hospital in Finland – supported by a network of industry partners including Neutron Therapeutics, Siemens Healthineers and BEC – are aiming to take BNCT into the clinical mainstream by exploiting a compact, accelerator-based neutron source that forms part of a purpose-built treatment unit within Helsinki’s Comprehensive Cancer Center.

 

Trapped-ion crystal makes an ultra-precise quantum sensor

25 Aug 2021 Oliver Stockdale

Quantum crystal: A quantum sensor built from a collection of beryllium ions (red spheres) in a Penning trap. (Courtesy: Steve Burrows)

An ultra-precise quantum sensor based on trapped beryllium ions is up to 20 times better at detecting weak electric fields than previous atomic devices. By introducing entanglement between the collective motion of the ions and their electronic spin, a collaboration led by the US National Institute of Standards and Technology (NIST) demonstrated that the ion displacement sensitivity in the presence of an electric field was an order of magnitude greater than for classical protocols with trapped ions. With further improvements, the technology could even be used in the search for dark matter.

Quantum sensors can detect and measure signals that are undetectable with their classical counterparts. They are thus a promising tool in many areas of fundamental science, including biological imaging as well as physics. Of the many different systems being pursued as quantum sensors, trapped ions could be particularly favourable due to experimenters’ precise control over their parameters and their ability to introduce entanglement into the system.

 

How to build an artificial brain, future is bright for hybrid perovskite solar cells

26 Aug 2021 Hamish Johnston

The human brain can do tasks such as image recognition much more efficiently than a computer. This is why Kwabena Boahen is developing an electronic architecture called Neurogrid, which mimics how our brains process information. In this episode of the Physics World Weekly podcast, the Stanford University researcher explains how he and his colleagues are blending analogue and digital technologies to create neuromorphic computers of the future.

 

lectronic gadgets can interfere with pacemakers and defibrillators, study reveals

26 Aug 2021

Distance matters: a new study recommends that devices such as mobile phones should be kept at least 15 cm from implanted pacemakers and defibrillators. (Courtesy: iStock/grinvalds)

Modern consumer electronics can produce magnetic fields strong enough to interfere with implemented medical devices, but the effect only poses a low risk to patients. That is the conclusion of Seth Seidman and colleagues at the US Food and Drug Administration’s Centre for Devices and Radiological Health , who measured variations in magnetic field strength at varying distances from the latest models of a smartphone and a smart watch. Based on their findings, the researchers suggest that these electronics should be kept at least 15 cm away from implanted devices.

 

ESTRO 2021 combines online access with live conference

26 Aug 2021 Sponsored by Physics World corporate partners

ESTRO 2021 will offer onsite or virtual access. (Courtesy: iStock/izusek)

The annual congress of the European Society for Radiation Oncology, taking place on 27–31 August, will enable delegates to participate in person or via an interactive digital platform.

The organizers of ESTRO 2021 will once again welcome delegates to join its live conference in Madrid, Spain, while also offering full digital access to anyone unable to attend in person. Running from 27 to 31 August, the event will enable both onsite and online delegates to share knowledge, interact with speakers and other attendees, and learn about the latest technical innovations.

 

‘Tuneable tuna’ makes a better robotic swimmer

26 Aug 2021

Efficient swimmer Qiang Zhong and Dan Quinn with their swimming robot in the test tank. (Courtesy: Yicong Fu, University of Virginia)

Giving fish-like robots adjustable tails makes them much more efficient swimmers, scientists in the US have discovered. As well as providing insight into how real fish swim, the researchers say their findings could enable the development of swimming robots that can carry out more complex missions than is possible with current technologies.

Real fish swim efficiently over a wide range of speeds. Biologists have long suspected that this is partly because they actively tune the stiffness of their tails to accommodate different conditions. However, while various evidence hints at such speed-dependent tail stiffening, it is hard to measure it directly, says Qiang Zhong, an engineer at the University of Virginia.

 

Supersolidity enters a second dimension

18 Aug 2021

Supersolid result Physicists have produced a two-dimensional supersolid quantum gas in the laboratory for the first time. (Courtesy: IQOQI Innsbruck/Harald Ritsch)

Atoms in a Bose-Einstein condensate (BEC) can exist in a mysterious “supersolid” state in two dimensions, researchers in Austria have shown. The work, which builds on research from 2019 demonstrating supersolidity in one dimension, opens the way to hitherto impossible tests of theoretical predictions about this long-unexplained phenomenon.

Supersolidity is a counterintuitive state of matter that was first predicted in 1957 by the theoretical physicist Eugene Gross. At temperatures near absolute zero, Gross reasoned that vacancies in crystals of bulk solid helium-4 could condense into a superfluid that would flow through the solid. Gross’ original conjecture remains unproven: a purported 2004 discovery was, in 2012, shown by the same researchers to be the result of experimental error. Subsequent studies have produced nothing definitive.

 

Nobel laureates call for ‘urgent’ action on the climate ahead of the G7 summit

10 Jun 2021

Sea view: leaders belonging to the world’s richest seven countries, known as the G7, are meeting this weeked in Carbis Bay, Cornwall, UK. (Courtesy: Shirokazen/CC BY 2.0)

Global leaders must take “urgent” action to halve emissions of greenhouse gases and reverse the loss of nature by 2030. That is according to a group of 126 Nobel laureates – including physics laureates Georg Bednorz, Steven Chu, Konstantin Novoselov and James Peebles – and others who have released a statement claiming that “time is running out to prevent irreversible changes” to the climate. The document was presented to António Guterres, United Nations General Secretary, and British Prime Minister Boris Johnson just days before a meeting of leaders belonging to some of the world’s richest countries, known as the G7, which is taking place this weekend in Cornwall, UK.

 

Balloon-borne telescope will ‘weigh’ the universe, remembering John Enderby

12 Aug 2021 Hamish Johnston

If you built a very expensive telescope, would you hitch it to a balloon and fly it 40 km above the surface of the Earth? That is what Mohamed Shaaban at the University of Toronto and an international team will do next year when they launch their SuperBIT telescope on NASA’s superpressure balloon. Shabaan explains why the team is putting their telescope on a balloon and how the instrument will be used it to study gravitational lensing, which could improve our understanding of how much dark matter there is in the universe.

 

Physics-themed holidays, meet the next director of the European Spallation Source

05 Aug 2021 Hamish Johnston

It is summer holiday season, at least here in the northern hemisphere, and hardworking physicists deserve a break. In this episode of the Physics World Weekly podcast, editors chat about holiday hotspots for physicists including Isaac Newton’s home and dark skies parks for stargazing.

 

Shape memory scaffolds support soft-tissue healing

18 Aug 2021 Katie Fegan

The 4Degra resins can be printed into scaffolds with a range of pore sizes and mechanical properties. (Courtesy: CC BY 4.0/A Weems et al Nat. Commun. 10.1038/s41467-021-23956-6)

Scientists from the University of Birmingham and the University of Warwick have unveiled a new class of polymeric four-dimensional (4D) printable resins for use in soft-tissue engineering.

 

Cuprate superconductors contain a strange component

17 Aug 2021 Isabelle Dumé

Electrons exhibiting maximal dissipation in the normal state before passing into a state of minimal dissipation in the superconducting state. Courtesy: Erik van Heumen (Amsterdam)

Nobody really understands why cuprates – highly-doped copper oxides – are high-temperature superconductors, and researchers in the UK and the Netherlands have now discovered that the materials don’t conform to conventional theories in their metallic state either. Instead, the researchers suggest that cuprates may contain a mix of “strange” and conventional metallic components, but this only poses a further question: which component is responsible for the cuprates’ superconductivity?

 

Scientists watch 2D material defects evolve in real time

16 Aug 2021 Isabelle Dumé

Propagation of a single-domain 'island'.(Courtesy: 2D Materials)

Material structures are rarely perfect, but researchers at the Japan Advanced Institute of Science and Technology (JAIST) have now identified a way to make them more so. By monitoring in real time how defects called dislocations evolve in a 2D form of silicon, the researchers uncovered a way of “healing” these defects that could yield fresh insights into how to accommodate similar irregularities in other nanomaterials.

 

10 Σημάδια Που Δείχνουν Πως Τα Νεφρά Δεν Λειτουργούν Σωστά!

Τι Θα Συμβεί Στο Σώμα, Αν Τρώτε Κάθε Μέρα Καρπούζι;AvatarΑκαδημία Υγείας04/08/2021

 ΑΠΟ ΑΚΑΔΗΜΙΑ ΥΓΕΙΑΣ 21/8/2021

Τι Θα Συμβεί Στο Σώμα, Αν Τρώτε Κάθε Μέρα Καρπούζι;

Ακαδημία Υγείας04/08/2021

3 ΝΕΑ ΑΡΧΕΙΑ ΠΛΗΡΟΦΟΡΙΑΚΆ ΓΙΑ ΤΗΝ ΕΞΈΛΙΞΗ ΤΗΣ ΜΕΤΑΛΛΑΞΗΣ ΔΕΛΤΑ ΣΤΟΝ ΠΛΑΝΗΤΗ

 3 ΝΕΑ ΑΡΧΕΙΑ ΠΛΗΡΟΦΟΡΙΑΚΆ ΓΙΑ ΤΗΝ ΕΞΈΛΙΞΗ ΤΗΣ ΜΕΤΑΛΛΑΞΗΣ ΔΕΛΤΑ ΣΤΟΝ ΠΛΑΝΗΤΗ - ΓΙΑ ΝΑ ΑΝΟΙΞΕΤΕ ΚΑΙ ΝΑ ΔΙΑΒΑΣΕΤΕ ΤΑ ΑΡΧΕΙΑ ΓΙΑ ΤΗΝ ΜΕΤΑΛΛΑΞΗ ΔΕΛΤΑ ΠΑΤΗΣΤΕ ΠΆΝΩ ΣΤΟ ΑΝΤΊΣΤΟΙΧΟ ΑΡΧΕΙΟ.

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