recycle statues of emperors

In the British Museum it is preserved a bust from the 1st century of the emperor Vespasian with a fascinating secret. In reality it does not show us Vespasian, but rather Nero. Or at least it was until a sculptor took out his chisel to alter the features of Nero, one of the rulers with worst reputation of Rome, and resemble those of Vespasian. It is not a unique case. We preserve many other imperial busts that initially portrayed one leader and over time were ‘re-sculpted’ to give him the appearance of another. One word: re-carve. Some time ago, archaeologists Francesca Bologna and Raffaella Bucolo set themselves a task that was as fascinating as it was complicated: to better understand when, how and, above all, why the recarving, the Roman practice of ‘re-carving’ sculptures of emperors to alter their appearance. That what was initially a bust of Caligula or Nero became another of Claudius or Vespasian, to name two real examples. One figure: 2,028. To better understand this habit, they analyzed 2,028 works, sculptures of Roman emperors made over three centuries, between 27 BC and 285 AD The exhibition is interesting not only because of the broad period it covers. The researchers also wanted to include a broad list of heroes, ranging from Gaius Julius Caesar Augustusfounder of the Roman Empire, until beyond Marcus Aurelius Claudius Gothicusnoting in each case the new and ‘recycled’ pieces. Their conclusions have been collected in a paper recently published in Journal of Roman Archeology. Why did they do it? The million dollar question. When answering it, the experts have raised above all a question of time and resources. That is, Roman sculptors would use ancient busts for a strictly practical reason and in order to reuse their materials and cut delivery times. In your article Bologna and Bucolo point out, however, that the phenomenon was probably much more “complex” and was influenced by both strictly technical and other “ideological” aspects. One of the first conclusions that both experts obtained is that the recarving It was not always practiced with the same frequency nor was it equally supported in all corners of the vast Roman Empire. For example, during the time of the Antonines The ‘recycling’ of busts was abandoned for a very simple reason: during that time (2nd century AD) fashion led rulers to wear thick beards and voluminous hair, an aesthetic very different from their dynastic predecessors. Julio-Claudiana and Flavia. Is that important? Yes. Because it is one thing to remove excess marble and another (very different and more unfeasible) to create it where there is none. As the sculptures of previous emperors did not leave enough material to recreate those beards and thick hair, the ‘re-sculpture’ was temporarily abandoned “for mainly technical reasons” during the Antonine era. Nor was it very common in periods of crisis in which emperors quickly succeeded one another on the throne, leaving no room for sculptors to ‘recycle’ the busts that were saved from pickaxe or mutilation. It matters who… and where. one of the conclusions The most surprising things that archaeologists have come to is that the ‘recycling’ of busts was not equally frequent throughout the Empire. Bologna and Bucolo calculate that of all the sculptures they analyzed, only 8% It shows signs of having been ‘re-sculpted’ to alter its identity. That is the general percentage, but it does not mean that it is extendable to the entire territory of the Empire. In the city of Rome it was somewhat higher (11%) and in other regions, such as Asia Minor or North Africa, it did not even reach 5%. If there is a territory that stands out, however, for the frequency of recarving It’s Iberiawhere that data shoots up to 19%. The unknown. That makes Hispania the region in which more likely it was that a sculpture of a fallen emperor passed through the workshop to be altered. Especially during the years of the Julio-Claudian and Flavian dynasties. The reason? One possibility is the different tunes of local elites. For example, there were portraits of Caligula that were converted into others of Augustus, a previous emperor of happier memory. The data from Rome, Africa and Asia Minor also have different explanations: the influence of political propaganda, the abundance of marble and specialized workshops or the existence of artisans. The punishment of punishments. One of the most interesting ideas that the researchers come up with is that the ‘recycling’ of busts connects with a well-known practice in Rome, the damnatio memoriae. The term may not sound familiar to you, but it means “condemnation of memory” and experts equate it with a kind of “posthumous cancel culture”. What does that mean? That when you wanted to punish a public official there was a particularly effective way to do it, even more bloody than simple execution: his mark was erased from history in a way so evident, so manifestly intentional, that it made it clear to future generations that that character should be reprobated. That is to say, his name was not suppressed in a discreet way, but in such a way that the void it left was clear. The case of Crispus. In an article published in 2024 in The ConversationMichael Hanaghan, of the Australian Catholic University, shares an illustrative example: in 326 AD the Emperor Constantine had his son Crispus executed, supposedly upon learning that he had seduced Constantine’s own wife… and at the time Constantine’s stepmother. Crispus. Although he was his firstborn, Constantine wanted to give him an exemplary punishment. And that didn’t just happen because of its execution. The name of Crispus was removed of monuments such as a preserved landmark in Brescia that Hanaghan came across during a visit to a museum. “This is not a secret erasure of someone’s name, but a public display of erasure.” “Clear memory”. Bologna and Bucolo point out that this practice is behind at least certain cases of ‘recycling’ of Roman busts. Its purpose was “to erase … Read more

The big problem with nuclear energy has always been its waste. Russia can now recycle them up to five times

A nuclear reactor operating for 60 years using a closed system of three circulating fuel loads, subjected to cleaning processes and specific recharges in each cycle. What until recently seemed like an unattainable technical utopia for the energy industry is the reality that Russia’s latest technological breakthrough points to. The historic Achilles heel of nuclear fission—radioactive waste—is about to take a radical turn to become an almost inexhaustible resource. The magnitude of the test. The press release of Atom Media explains that Unit 1 of the Balakovo nuclear power plant (operated by Rosatom’s energy division) has just made history. They have successfully removed the last three lead test assemblies from an innovative fuel dubbed REMIX. These groups have completed three operating cycles of 18 months each. We are talking about 54 months performing at maximum capacity in a Russian commercial reactor type VVER-1000, thus exhausting its standard useful life. This puts the finishing touch to a demanding pilot program which started at the end of 2021 when the first six experimental rods were introduced into the reactor core. The resounding success. The most impressive thing about this milestone is not just that the fuel works, but where it works. Unlike other experiments designed for new generation fast reactors, REMIX fuel can be used in light water thermal reactors already operating massively around the planet. And without the need to modify its design or add costly security measures. The rehearsal went flawlessly. Yuri Ryzhkov, deputy chief engineer of the Balakovo power plant, detailed: “After each cycle, the fuel rods and structural elements were inspected using the television camera of the refueling machine. No deviations were detected during operation; neutron, physical and service characteristics remained within the design limits.” The science behind REMIX. But what exactly is this material? REMIX comes from Regenerated Mixture (Regenerated Mixture). Instead of using the usual natural enriched uranium, Russian scientists have created a matrix pellet that mixes regenerated uranium and plutonium (both recovered from already spent and reprocessed nuclear fuel), seasoned with some fresh enriched uranium. The technical key to the process is in the proportion: it maintains a very low level of plutonium, up to 1.5%. Thanks to this exact formulation, its neutron spectrum is practically identical to that of standard fuel. For practical purposes, the reactor core behaves the same and does not even “notice” the difference. The cleaning process. It is the circular economy taken to the atomic extreme. The magazine World Nuclear Newyes explains that this recycling cycle can be repeated up to five times. With each pass, the industry reprocesses the material to separate the useful uranium and plutonium from the fission products, which constitute the true radioactive waste. This useless waste is extracted and vitrified (encapsulated in glass) to be permanently and safely buried in geological deposits, while the useful fuel mixture is reintroduced into the reactor. The vision of the balanced cycle. Now it’s time for the laboratory and certification phase, where the irradiated material, now resting in cooling pools, will travel to the Atomic Reactor Research Institute in Dimitrovgrad for exhaustive analysis. Alexander Ugryumov, Vice President of R&D at TVEL (Rosatom’s fuel subsidiary), He announced that after these studies They will be able to bring the product to the market. The next evolutionary step will be to test mixtures with depleted uranium and up to 5% plutonium. All this is part of what Rosatom has called the “Balanced Nuclear Fuel Cycle” (NFC). The goal is to drastically reduce the volume and danger of radioactive waste, solving the historic problem of long-term storage for future generations and guaranteeing a truly sustainable production system. An impact on a global scale. Although the technical success is undeniable and the operational milestone in a commercial reactor is demonstrated, the mass adoption of this technology on a global level will largely depend on the commercialization costs and the economic viability of large-scale reprocessing; factors that the industry must demonstrate after the current qualification phase. However, if Rosatom manages to market REMIX at competitive prices, the global energy situation could take an unprecedented turn. We are not talking about a niche experiment. The data provided by Atom Media illustrate this magnitude: TVEL currently supplies fuel to more than 70 power reactors in 15 countries. Today, one in six reactors in the world operates with its technology. Moving from a linear “use and bury” industry to a closed loop where nuclear resources have multiple lives would not only dramatically expand the planet’s energy reserves, but could forever redefine the ecological viability of nuclear energy. Image | atom Xataka | The US has to make a crucial decision in Iran: exit without destroying its nuclear capabilities or a terrestrial “armaggedon”

the first pilot line to recycle rare earth magnets

Europe has learned an uncomfortable lesson in recent years: the energy transition does not depend only on political will or investments in renewables, but on materials that it does not control. After achieving —not without difficulties— reduce its dependence on Russian gas, the European Union is facing now to a deeper, more structural vulnerability: China’s near-absolute dominance over critical metals and, in particular, rare earth permanent magnets. Without these magnets there are no electric cars, no wind turbines, no advanced robotics, nor much of the defense industry. However, France has taken a step that goes beyond political discourse and can turn the tables. The inauguration of a pioneering pilot line. The Orano group and the Alternative Energies and Atomic Energy Commission (CEA) inaugurated at the CEA-Liten facilities in Grenoble, a pilot line dedicated to the recycling and remanufacturing of high-performance permanent magnets from rare earths. As Orano explained, The infrastructure has a pilot capacity of up to four tons and is equipped with technologies representative of an industrial scale, operated by a joint Orano–CEA team. The technical results of the project are expected by the end of 2026, with a view to subsequent large-scale implementation by an external industrial operator. A response to a critical dependency. The importance of the project goes far beyond its technical dimension. Permanent magnets based on neodymium-iron-boron have become key pieces for the European industrial future, but today the EU matters more than 95% of those you need. and the demand it doesn’t stop growing: The market has grown from around 250,000 tonnes of magnets this year to around 350,000 in 2030, with a growing proportion of high-performance applications. The problem is not only volume, but control of the value chain. China not only concentrates a good part of the world reserves of rare earthsbut between 70% and 90% of its processing and up to 99% in the case of heavy rare earths. This gives it a capacity for geopolitical pressure that has already translated into export restrictions and real supply interruptions for European industries. In this context, the Grenoble pilot line is fully part of the Critical Raw Materials Actwhich sets the goal that at least 25% of critical raw materials are recycled in Europe by 2030. “Short circuit” recycling. This is what the technological core of the project is called. Unlike traditional recycling – the so-called “long loop” – this approach allows rare earths to be recovered directly in metallic form from magnets at the end of their useful life, without going through complex chemical steps of dissolution, reoxidation and reconstitution. “This recycling offers an optimal compromise between magnetic performance, circularity and decarbonization,” explains Benoît Richebé, project manager for Rare Earths and Magnet Recycling at Orano, in statements collected by El Periódico de la Energía. The approach allows critical metals to be directly reused and reconstructed new high-performance magnets, suitable for demanding applications such as electric vehicle traction motors or offshore wind turbines. Orano defends, however, a hybrid approach. According to Richebé, short loop and long loop recycling are complementary, and Europe must be able to have both to build a flexible and resilient industry. The mixture of secondary raw materials with new alloys ensures maximum technical performance. Beyond the pilot. Currently, the recycling rate of rare earth magnets in Europe is just 1%, according to data cited by the German Mineral Resources Agency (DERA). For years, the combination of low prices for Chinese primary products and irregular availability of waste has slowed the development of a large-scale recycling industry. However, how RawMaterials collectsthe largest magnet recycling plant in Eastern Europe, operated by Heraeusand in the south of France the company Caremag plans to establish a rare earth recycling and refining plant in the coming years. However, here comes the key point: the Orano and CEA project is also supported by two collaborative consortia financed by France and the European Union —Magellan 1 and Magnolia 2—, which develop complementary technologies for the manufacture of magnets from recycled critical metals. One of the differentiating elements of the project is the application of Orano’s nuclear know-how to the magnets industry: powder metallurgy, processes in controlled atmospheres, sintering and management of highly regulated facilities. Experiences accumulated in plants such as Orano Melox, dedicated to nuclear fuel recycling, are now transferred to a key sector for electrification. A crack in the monopoly. France is not going to compete with China in production volume of rare earths or magnets in the short term. But with this pilot line, something perhaps more important has begun to be disputed: the control of industrial knowledge and processes. As Benoît Richebé summarizes“mastering the recycling of magnets will be essential for the ecological, digital and technological transitions.” It is not just about materials, but about industrial sovereignty. If the pilot meets its objectives and the processes are successfully transferred to an industrial scale, Europe could recover part of a value chain that it lost decades ago. In a world where critical metals have become instruments of power, recycling magnets is not just an environmental solution: it is a strategic act. Image | Unsplash Xataka | Europe no longer depends on Russian gas: it depends on something more difficult to replace

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