ΦΥΣΙΚΗ Β ΛΥΚΕΙΟΥ ΠΡΟΣΝΑΤΟΛΙΣΜΟΥ ΘΕΤΙΚΩΝ ΣΠΟΥΔΩΝ - (ΘΕΩΡΙΑ: ΘΕΡΜΙΚΕΣ ΜΗΧΑΝΕΣ ΚΑΙ ΤΥΠΟΙ ΜΗΧΑΝΩΝ)

ΦΥΣΙΚΗ Β ΛΥΚΕΙΟΥ ΠΡΟΣΝΑΤΟΛΙΣΜΟΥ ΘΕΤΙΚΩΝ ΣΠΟΥΔΩΝ - (ΘΕΩΡΙΑ: ΘΕΡΜΙΚΕΣ ΜΗΧΑΝΕΣ ΚΑΙ ΤΥΠΟΙ ΜΗΧΑΝΩΝ)

Βρέθηκε η θεραπεία του καρκίνου;

1711

SHARES

Η θεραπεία θα είναι αποτελεσματική από την πρώτη ημέρα

Μία ολοκληρωμένη θεραπεία για όλους τους τύπους καρκίνων ισχυρίζεται ότι είναι πιθανό να αναπτύξει μια ομάδα Ισραηλινών επιστημόνων, σύμφωνα με δημοσίευμα της Jerusalem Post.

«Πιστεύουμε ότι θα είμαστε σε θέση μέσα σε έναν χρόνο να παρουσιάσουμε μια ολοκληρωμένη θεραπεία για τον καρκίνο» δήλωσε στην εφημερίδα ο Dan Aridor, πρόεδρος του διοικητικού συμβουλίου της εταιρείας Accelerated Evolution Biotechnologies, που αναπτύσσει τη νέα θεραπεία. 

«Η θεραπεία μας για τον καρκίνο θα είναι αποτελεσματική από την πρώτη κιόλας μέρα χορήγησής της, θα διαρκεί μερικές εβδομάδες και θα έχει ελάχιστες ή και καθόλου παρενέργειες. Επίσης το κόστος της θα είναι αρκετά χαμηλότερο από τις άλλες θεραπείες που είναι διαθέσιμες στην αγορά», συμπλήρωσε, προσθέτοντας ότι θα είναι εξατομικευμένη για κάθε ασθενή.

Η θεραπεία ονομάζεται MuTaTo, (από τα αρχικά της φράσης "multi-target toxin"). Το φάρμακο λειτουργεί ως αντιβιοτικό κατά του καρκίνου και χρησιμοποιεί έναν συνδυασμό πεπτιδίων που καταπολεμούν τον καρκίνο και μια τοξίνη που «σκοτώνει» στοχευμένα καρκινικά κύτταρα.

Οι Ισραηλινοί επιστήμονες εξέτασαν γιατί τα προηγούμενα φάρμακα για τον καρκίνο απέτυχαν.

Ένας λόγος για τον οποίο αποτυγχάνουν τα φάρμακα κατά του καρκίνου είναι επειδή επιτίθενται μόνο σε ένα συγκεκριμένο στόχο μέσα ή πάνω σε ένα καρκινικό κύτταρο κάθε φορά. Οι μεταλλάξεις στα καρκινικά κύτταρα καθιστούν τα αντικαρκινικά φάρμακα αναποτελεσματικά.

Ωστόσο, το MuTaTo χρησιμοποιεί αρκετά καρκινικά στοχευμένα πεπτίδια ταυτόχρονα σε ένα μόνο καρκινικό κύτταρο, μαζί με μια τοξίνη που καταστρέφει τον καρκίνο.

Squeezed graphene becomes a superconductor

28 Jan 2019

Come together: squeezing bilayer graphene can induce superconductivity. (Courtesy: Shutterstock/Mopic)

Twisted bilayer graphene can be made into a superconductor by simply squeezing the two layers closer together – according to an international team of physicists. Observation of the effect confirms a key prediction about the causes of correlated electron phenomena in bilayer graphene and could potentially help to unravel the puzzle of unconventional superconductivity.

This effect was predicted several years ago by independent teams in Chile and the US, who calculated that when two layers are twisted by a “magic angle” of about 1.1° relative to each other, “flat bands” occur, in which the kinetic energy of the electrons is almost independent of their momentum.Graphene is a sheet of carbon just one atom thick and its remarkable electronic properties have captivated physicists since the free-standing material was first isolated in 2004. While much work has been done on the properties of electrons within graphene sheets, researchers have also become interested in the weak coupling that occurs between electrons in bilayers of graphene.

The quantum Y2K moment

03 Dec 2018 Margaret Harris

The advent of quantum computers threatens many of the encryption systems that keep online communications secure and make e-commerce possible. Margaret Harrisinvestigates plans to make the Internet safe for the quantum era

(Courtesy: Shutterstock/jijomathaidesigners )

Winfried Hensinger wants to build a computer the size of a football pitch. He’s aware that the idea may be a tough sell. Scientists and engineers have laboured for decades to transform the room-sized machines of the 1940s and 1950s into devices that fit on a desk, in the palm of your hand, and even – as with a chip unveiled at IBM last March – inside a grain of salt. Why would anyone take such a gigantic step backwards?

The answer lies in the architecture of Hensinger’s proposed machine. Instead of performing calculations with classical 0s and 1s, the computer he and colleagues at the University of Sussex in the UK hope to build would exploit the quantum properties of a billion ytterbium ions. Hensinger’s blueprint calls for these ions to be kept aloof from their environment with magnets and individually shuttled into interaction zones within a vast grid of microfabricated traps, using a field of microwave radiation to control their movements. The result, he says, would be a computer that can unravel “tremendously complicated problems that would take billions of years to solve on even the fastest supercomputers”.

Your pathway to a future in nuclear science

21 Sep 2018 Sponsored by NTEC

Postgraduate training that is personalized, flexible and taught by experts – that is what’s on offer from the Nuclear Technology Education Consortium (NTEC), whose novel courses aim to create the UK’s next generation of nuclear experts, with the skills to secure a sustainable and safe nuclear industry

Hands on: an NTEC student operating the VR-1 Reactor at the Czech Technical University.

“What we offer is a vocational programme, the whole goal of which is to support the nuclear industry,” says John Roberts of The University of Manchester. NTEC was formed in 2005 to tackle concerns that not enough students were graduating from UK universities to meet the needs of the nuclear sector, be it in operation, decommissioning or new build. It was set up following detailed consultations with the whole of the UK nuclear sector including businesses, regulators, the Ministry of Defence, the Nuclear Decommissioning Authority, government departments and the Cogent Sector Skills Council.

Seven institutions – the universities of Birmingham, Central Lancashire, Leeds, Liverpool, Manchester and Sheffield, as well as the Nuclear Department of the Defence Academy – provide 14 different modules that are directly taught, with nine of these also available in a distance-learning format. Students graduate with an MSc, a postgraduate certificate, a diploma or a continuous professional development (CPD) accreditation.

Real-time measurements reveal chaotic vibration in carbon nanotubes

28 Jan 2019 Alex Petkov

Carbon nanotube over optical microcavity (Credit: Nature)

Scientists in the US have used a novel photonic microscope to make the first real-time observations of thermal vibrations in carbon nanotubes (CNTs). Their results reveal a rich dynamical regime that has not yet been explored in these miniature resonators, including weakly chaotic behaviour and quasi-periodic modulations that yield a long-range coherence about three orders of magnitude higher than previously reported.

Scientists have long been interested in the mechanical vibrations of CNTs for use in applications such as nanoscale biosensors, but probing these dynamics has proved challenging. Standard electrical techniques tend to produce noise, while electron microscopes can cause unwanted material deposition on CNTs at room temperature. Even optical detection presents a problem as the tiny optical cross-section of CNTs causes most light to pass straight through them without any significant interaction.

Wearable patch measures sweat in extreme environments

26 Jan 2019

Photo by Jim De Ramos from Pexels

A research team led by John Rogers at Northwestern University in the US has unveiled a thin and robust sweat sensor that is capable of monitoring hydration during exercise. The circular patch, with a width of just 30 mm, works underwater and in dry, arid environments – which makes it ideal for monitoring fluid loss during swimming, triathlons, ultramarathons and many other endurance sports.

Since people sweat at different rates, it is very difficult to know how much fluid athletes lose through perspiration. This can be a major problem, as drinking too much water can lead to hyponatremia, which in acute cases can cause headaches, seizures or even coma. Meanwhile, drinking too little risks hypohydration, which can produce extreme symptoms that include delirium as well as increased risk of heat stroke and death.