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If you think you are not the same person after a long shift, the science of being right. The reason is in the brain

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Fatigue can affect us in different ways and the different contexts, it is something that we have surely perceived in our own meats, trying to remain awake at night, studying before an exam or during a prolonged trip. Also, it is likely, we have noticed it after a work day that for some reason we can have lengthened. Significant changes. A study has detected Neurological changes in professionals prolonged working hours. The study was conducted in health professionals who faced days above 52 hours per week. “The overfracha can induce neuroadotative changes that can affect cognitive and emotional health,” Explain the team responsible for the study. Although it is a pilot study, which implies caution when drawing conclusions, the work provides new evidence on the impact of excess work on our well -being and in our productivity. The price of excess work. The global cost of excess work It is considerable. Beyond conventional occupational hazards, overfracha It has been related with an increase in the risk associated with cardiovascular diseases or metabolic disorders, among other problems. Recently, A study Posted in the magazine Environment International He estimated in almost 750,000 deaths attributable to excess work in 2016. This resulted in the loss of more than 23 million years of life adjusted by disability (Daly) linked to certain cardiovascular diseases. Excess work, marked in the brain. In addition to physiological problems, excess work can also cause mental health problems. In an effort to better understand their neurological context, the team responsible for the new study began studying the brain of professionals in a field, that of medicine, where marathon days are relatively common. The team He turned to the Gachon Regional Cohort (Grocs) to obtain certain data, which complemented with magnetic resonance scanning, for which they had a total of 110 participants, the majority sanitary. 32 of the participants (28%) met the requirements to be included in the group of those who worked in excess, while the rest would have “standard” days. To study the changes, the team resorted to a technique called voxel -based morphometry (VBM), a useful technique when identifying and comparing regional differences in the gray matter of the brain. Changes in 17 brain regions. They ran into significant changes in some regions related to executive function and emotional regulation. An example cited by the team is in A 19% increase In the volume of the average frontal turn, an area involved in key cognitive functions. The analysis allowed to detect increases in 17 regions of the brain. One of these areas was the upper frontal turn, an area involved in attention, planning and decision making. Another area of ​​interest was the insula, key zone in the integration of sensory stimuli and engines, but also in emotional processing and understanding of the social context, the team points out. The details of the study were published In an article In the magazine Occupational & Environmental Medicine. Small scale. The team itself warns that there are limitations that imply the need to be cautious in the interpretation of the results. For example, this is a pilot study on a limited sample of participants. In addition, experimental and control groups are not random, which implies a possibility of self -selection and with it a possible bias in the analysis. In Xataka | Productivity dysmorphia: toxic productivity that makes you believe that you never work enough Image | National Cancer Institute

Alzheimer’s starts long before its symptoms. And we have discovered one of its first mechanisms

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We generally associate Alzheimer’s disease with memory loss since this is probably its most visible symptom. However, it is still what we do not know about the biological processes that unleash these symptoms. Piece by piece, we are solving this immense puzzle. New mechanism. A team in which researchers from the Severo Ochoa Molecular Biology Center (CBM-CSIC-UAM) participate He has discovered A mechanism linked to the early development of Alzheimer’s disease. The key component of this mechanism is in a protein called SFRP1. Astrocytes and SFRP1. As described by the team responsible for the finding, in the origin of the mechanism are brain cells called astrocytes. Astrocytes They are glial cells (A type of nerve cell) that for a while we thought were “assistants” of neurons but whose relevance we are seeing grow. In a mice -based model, the new study has shown that these cells could play an important role in the appearance of Alzheimer’s through an “excessive” production of the SFRP1 protein. This protein is one of the compounds involved in the regulation of communication between different cells during development, but in later stages of life its excess may imply risks. A “jam” in the brain. As the equipment continues, the accumulation of the SFRP1 protein in the adult brain is associated with chronic inflammatory processes associated with aging, and also to Alzheimer’s own disease. The problem arises when this excess blocks the activity of the adam10 enzyme, which plays a key role in maintaining the proper functioning of neuronal connections. “This blockage generates an imbalance that deteriorates synaptic plasticity, an essential cell mechanism to form and consolidate memories that allows neurons to regulate their connectivity in response to different stimuli,” They explain in a press release. Long -term synaptic potentiation. The accumulation of the SFRP1 protein would thus be interfering with a process called LTP or long -term synaptic potentiation. This is a “fundamental” process for learning and memory, the team stands out. A vital process in brain plasticity, that is, that allows the neuronal connections that are most frequently used to be reinforced, something indispensable when consolidating new memories. The details of the study have been published In an article In the magazine Cell Reports. A possible trigger. The fight against Alzheimer’s is a fight against the clock. The appearance of its most easily noticeable effects is associated with lesions already irreversible in the brain, so the only remaining route of action is to delay the advance of the disease. The techniques focused on detecting the internal signs of the disease, mainly the accumulation of amyloid plaques in the brain can allow us to advance ourselves to the appearance of the external symptoms of the disease. Now, the new study Open a road To get into stages still prior to the disease. “The increase of SFRP1 in early stages seems to act as an active engine of pathology, not as a simple companion of other degenerative processes,” Explain in the press release Guadalupe Pereyra, co -author of the study. Beyond rodents. Like any study in mice, extrapolating its conclusions can be complicated, so studies that validate what you have learned and the degree to which it is applicable to the development of the disease in humans will be needed. Converting what has learned into new therapeutic pathways will not be simple either, but this type of advance can help us in different ways. First, because understanding the disease and its mechanisms is essential in order to find a future cure; and second, since in the fight against their symptoms, Early detection It is a very important advantage. In Xataka | If the question is how to hunt the Alzheimer Image | CSIC

The cardinals have given themselves a last feast before the conclave. The menu that began in 1274 can last too long

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He conclave that will take the cardinals to the election of the new Pope can be eternalized. The story, as we will see below, is full of examples that give us an idea of ​​what can happen when those doors are closed. To get an idea, the meeting that ended with the announcement of Gregorio X took Almost three yearsso much that they even removed the roof to Encourage them To make a decision. In that context, the menu in food can be made very heavy. What do future potatoes eat. For more than 750 years, foods served during papal conclaves have been subject to strict rules seeking to preserve the Absolute confidentiality of the choice process. What at first glance may seem like a lower logistics detail (feeding 135 cardinals for days, weeks or years of confinement) is, in fact, a part deeply ritualized and guarded of the most secret event of the Catholic Church. The food, like the word, can communicate, and it is precisely that potential that has motivated a system of almost obsessive control It prevents, for example, that closed cakes, whole chickens or drinks in opaque containers are served. In past times, an empanada could hide an encrypted message or a dirty napkin could bring news abroad. Today, concerns focus more on electronic devices, but the logic of surveillance It remains intact. What the cardinals eat, how they eat it and who is still part of a complex symbolic and practical framework that protects the White smoke mystery. Millenary tradition. The BBC counted That the origin of these restrictions dates back to 1274, when Pope Gregory X, after suffering in his own flesh the longest conclave in history (1268–1271), It imposed severe norms to avoid stagnations: absolute isolation and progressive rationing. If after three days there was no consensus, the cardinals would receive only one meal a day, and after eight, only bread and water. Although these rules softened in the fourteenth century, with Clemente VI Authorizing three -stroke meals, the essence of control remained. The food ceased to be a privilege and became part of the confinement ritual. During the Renaissance, the famous chef Bartolomeo Scappi (considered the first media chef in history) described in detail the CULINARY PROTOCOL OF CONCLAVE that chose the Pope July III: Meals Transported by shifts raffled, reviewed by tasters, delivered through a RUOTA (A kind of mural tourniquet that prevented visual contact between chefs and cardinals) and supervised by the Swiss and Italian guard. Nothing was left to chance: food was simple but abundant, and napkins, inspected one by one. The Sistine Chapel, the place where the conclave is celebrated Austera meals. In contrast to the Renaissance sophistication described by SCAPPI (salads, fruits, charcuterie, wine and fresh water, all served in private cells decorated with silk), the current church has opted for a Freekness messageaccording to Pope’s style Francisco. For the conclave that begins on May 7, they will be the nuns of the Domus Sanctae Marthae Those who prepare simple dishes of Lazio’s kitchen and Abruzzo: minestrone, spaghetti, arrosticini and boiled vegetables. Despite the change in preparation, the intention is the same: that nothing between or leaves without supervision. The kitchen remains a place of potential risk, and its surveillance, a ritual need. In fact, some of it we already saw in the movie Conclavewhere this tension is dramatized by showing the kitchen as the true intrigues center, and where human interaction continues to occur even when everything else is silent. Obviously, the film cannot be taken as an exact reflection of reality, but it is right in a key: in these events where the word is limited, everyday gestures (such as sharing a dish or lifting a drink) charge a Extraordinary meaning. From luxury to duty. For all this too, before being held, many cardinals occur One last taste In his Roman favorite restaurants, such as AL PASSETTO DI BORGOa few meters from the Basilica of San Pedro. There, some have orders already famous: lasagna for Donald Wuerl, grilled squid for Francesco Coccopalmerio. We talk about dinners loaded with that possible future nostalgia: the last free meal before plunging into the ritual atmosphere of the conclave, where each bite is observed and each measured spoon. That contrast between freedom and control, between the bustle of the Roman dining room and the silence of the papal refectory, not only defines the passage towards the isolation, but also highlights The symbolic weight that has food as a threshold between the outside world and the sacred closure. Surveillance that endures. Although today is not afraid to the poison As in the Renaissance, and the priority is no longer to avoid a popular riot for a stagnant choice, the logic of Total isolation continues. Food surveillance, even with modern resources, maintains the original philosophy: prevent interference, protect the stealth, and preserve the holiness of the process. The fact that a cardinal leaves the refectory and between the Sistine chapel with a full stomach but the mind focused only on its vote, is not accidental. The food cannot distract, nor can it become a vehicle of external influences. Therefore, even if the stuffed chickens are no longer reviewed in search of secret messages, in the Vatican It continues to sweep In search of microphones and hidden devices. A church metaphor. If you want also, food surveillance is not only a matter of security, but a Identity expression same of the Church. In a moment of transition, when the future spiritual leader of 1.4 billion Of Catholics is at stake, each gesture is ritualized. From that perspective, eating ceases to be a biological need to become a liturgical act of containment, discipline and community. The Conclave table, therefore, is not only a place of livelihood, but of Communion and Secret. Of course, quite possibly also and while the cardinals prepare to choose the successor, their Excellences They will remember That last dish of lasagna in Rome. Image | Catholic Church, Gloria … Read more

The Chinese solution that should not take long to arrive in Spain

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In any corner of China – a restaurant, the reception of a hotel, each plant of that same hotel, a subway station, a neighborhood store – it is impossible not to stumble upon a box full of PowerBanks. They are everywhere and work simply: escapes a QR code with Wechat either Alipay, An external battery is released, and you can take it to load your mobile anywhere. It is not even necessary to return it in the same place: it is enough to find another station of the same supplier, an easy thing when there are literally thousands deployed in the cities. 88 PowerBanks at the Wuhu train station. Image: Xataka. Behind this little logistics miracle are companies like Meituan, Energy Monster, Xiaodian, Jiedian or Soudian. Companies that not only operate portable battery rental networks, but also created An almost invisible infrastructure, perfectly adapted to mobile dependence of modern Chinese life. The price is as modest as the service is ubiquitous: it usually is around 1 and 8 yuan per hour (from 0.12 to 1 euro), with a daily stop that rarely exceeds 50 yuan (about 6.5 euros), especially in high -transit areas. Some companies require a reimbursable deposit, which ranges between 50 and 200 yuan (6 to 24 euros), although many platforms have eliminated this requirement for their verified users. Do like us on this trip and Stay connected whatever your destination. Always navigate at high speed and With unlimited data with the ESIM from Holafly and forget about unpleasant surprises on the bill. Easy to install, keeping your physical Sim card to receive calls and No positions of Roaming. And with a 5 % discount! Council offered by the brand What if someone decides not to return the battery? Nothing dramatic, but does not go free either. In most services, such as Volt+, if the battery is not returned in 48 hours, an amount is automatically charged that usually surrounds 99 yuanes (about 12 euros) through the linked account. So, The rent becomes de facto In a forced purchase: you stay the PowerBankand they charge you for her. In addition, the penalty may vary if returned in another city other than the rental, or if the battery is returned damaged. 12 PowerBanks in a hotel that had the same box on its 33 plants. Image: Xataka. Image: Xataka. 8 PowerBanks next to the cash register of a restaurant. Image: Xataka. Another pair of boxes from different suppliers in another restaurant. Image: Xataka. Another great Powerbanks reserve in Shanghai. Image: Xataka. Image: Xataka. At the Shanghai train station. Image: Xataka. This ecosystem is not only useful for the user. The shops that house the stations receive a small commission for each rentalin addition to increasing the flow of customers, something that We have already seen in Spain with the neighborhood stores converted into packages collection points. It has become a new layer of urban services. Parallelism with Spain is inevitable. In our country, the implementation of Digital DNI This year, the progressive disappearance of physical cards – payment, loyalty, even driving card– They draw A scenario in which the mobile is not only accessory, but the core of our operational identity. It is no longer about not being able to call or send a message: running out of battery if we get used to leaving the portfolio at home is not being able to pay for anything, not being able to climb a train, not being able to be accredited before an authority. Just as China has converted battery rent into a trivialized need, Spain seems to integrate similar infrastructure if you want to sustain its transition to a 100% mobile life. And it would be logical to think that we will soon see stations of PowerBanks In coffee shops, gyms, bars or sporting events under an affordable micropago model. Years ago We talk to a Belgian company that proposed thisbut he hasn’t had so much tour. A future without physical wallets It implies a new, much more mundane risk: running out of battery will not be a condemnation of ilocalization or boredom, but a personal collapse. And as in so many other things, China already takes us a few advantage loaders. In Xataka | We have visited the Shenzhen falsification market: China is at another level when it comes to copying other products Outstanding image | Xataka

What happened so that in the long term we lost the race

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At the moment USA and China monopolize all the prominence in the field of Quantum computers. His struggle for world supremacy has many ramifications, and, precisely, Quantum technologies They embody one of them. Both countries have reached Quantum supremacyand, on paper, they are also the most developed in the still premature field of quantum telecommunications. However, this story did not start with them. He was born in Europe. And he did it at a time when quantum computers had already been outlined from a theoretical point of view, but seemed unfeasible. Everything changed in 1995. That year the Spanish physicist Ignacio Cirac and the Austrian physical veteran Peter Zoller They published the article which is unanimously considered the cornerstone that supports the birth of quantum computing as we currently contemplate it. Without their work in all likelihood, current quantum computers would not exist. Or, at least, they would have arrived later. It all started with Cirac and Zoller The roads of these two researchers crossed in the early 90s. Ignacio Cirac had finished the physics career at the Complutense University of Madrid in 1988 and decided to travel to the US to complete his doctorate with the prestigious physicist Peter Zoller. His collaboration was very fruitful From the first moment, so together they began working in such promising fields, and, at the same time, as complex, as quantum cryptography or teleport. Other researchers had proposed before them the possibility of building a quantum computer, but nobody knew how to do it. At that time no physique knew what the right strategy was to put a quantum computer. Zoller and Cirac did know In 1994 Cirac and Zoller attended a conference in which other researchers explained the enormous potential they had from a strictly theoretical point of view quantum computers. However, at that time No physique knew what the right strategy was To set up one of these machines. Zoller and Cirac surveys inspiration shortly after witnessing that conference, and realized that they had found a way to build a machine capable of carrying out calculations with quantum bits or cubits. His scientific article was published in Physical Review Letters on May 15, 1995. They titled ‘Quantum Computations with Cold Trapped Ins’ (Quantum computing with cold ions), and, despite their exoticism, many other physicists immediately realized that what Cirac and Zoller proposed had a huge potential. If we intend to set a date to identify the germ that gave rise to the birth of quantum computers it seems reasonable to accept what should be the day in which the text of these two European physicists saw the light. In any case, one of his greatest successes was his ability to gather the world of abstract theories of quantum computing in which other physicists worked before them with atomic physics, molecular physics and optics. In fact, the title of your scientific text already contains one of the types of cubits most advanced currently available: Quantum bits of ion traps. Honeywell or Ionq are two of the companies that have collected their witness and several decades later they have managed to put this type of quantum machines ready. The recognition of the scientific community soon arrived. Zoller and Cirac were consolidated as two central figures in the formation of international research groups, and, above all, both were actively involved in the constitution of European Quantum Technologies Development Programs. Zoller collaborates closely since the beginning of the 2000 with the Institute for Inns Information and Quantum Optics (Austria). And Cirac has directed since 2001 the theoretical division of the Max Planck Institute of Quantum Optics housed in Garching, a peaceful town located a few kilometers from Munich (Germany). Europe has failed to transfer its academic leadership to the industry The thrust of Ignacio Cirac, Peter Zoller and many other scientists with whom they have worked has not been enough to deliver industrial leadership to Europe in the field of quantum computers. Currently the old continent remains a world power in research thanks to the work that the groups of Quantum Physics of the University of Technology of Delft, in the Netherlands; the Max Planck Institute of Quantum Optics, in Germany; the Federal Polytechnic School of Zurich, in Switzerland; the Center for Quantum Technologies of Paris, in France; the National Center for Quantum Computing, in the United Kingdom; or the Institute of Fotonic Sciences, in Spain, among other academic institutions. Leadership in scientific research does not necessarily guarantee industrial leadership in those applications derived from these technical innovations But it is not enough. Leadership in scientific research does not necessarily guarantee industrial leadership in those applications derived from these technical innovations. This is the big problem that Europe has had. He has not managed to transfer his academic leadership to the industry. During The conversation I held In October 2019 with Juan José García Ripoll, a researcher of the Fundamental Physics Institute of the Higher Council for Scientific Research (CSIC) that develops its research activity within the Quantum Information Group and Fundamentals of Quantum Theory, this physicist explained to me why Europe does not rivate today with the USA or China, when you could do it. As we have seen, the old continent had the scientific advantage in this field, but lost it because within just five years a few international companies and laboratories invested a lot of money in strengthening a few groups and got an exponential advance in this area. This reminds us how important it is to observe that it is strategically interesting and not lose that track. This field was built by Europe. Just two and a half decades He stayed behind. “Probably the fault is of our scientific fabric, and, above all, of our business fabric, which is less innovative and costs him more to get into this type of risky lines,” Juan José García Ripoll holds. In Europe there are companies that are dedicated to quantum computers. The Austrian Alpine Quantum Technologies, the Finnish IQM, the British Oxford … Read more

Meta has a very long history by replicating rival applications to become gold. Edits is the most recent case

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If you have opened Instagram throughout the day, you are likely to find reels or stories talking about Editsthe new finish line focused on short video edition. It was an expected response to Capcutmore than welcome to offer an alternative to an application that barely had rivals in the market. Beyond the app, which is still a free Capcut clone with less functions (at least in this initial easy), the key point of this launch attends to a strategy that has been running for years: copying to kill. Edits arrives at the right time. Instagram has had a lot of time to launch a video editing application. But, as usual, he has done it with him Timming more precise possible. In mid -January the government of Donald Trump Baneaba Tiktok And, next to her, Capcut. Just a few hours after the baneo, Tiktok He returned to apps stores with an extension that is still in force. But little or nothing was discussed that Capcut was never available again. It has been right now, in full uncertainty what will happen to the apps of Bytedance (company behind Tiktok and Capcut), when Meta has decided to launch edits. The goal only cares about creators. Content creators are the pillar that supports apps such as Instagram and Tiktok. And there is quite curious data in this regard, according to data from Sefici. The Nanoinfluencers (less than 10,000 followers), have a 5%participation rate, the highest. The microinfluencers (from 10,000 to 100,000 followers), 4%. The macroinfluencers, with more than 100,000 followers, are 7% in participation. Why is it important to understand this? Because in the business model of this social network there are many users consuming content (and advertising), but few creating. And it cannot be consumed if there is nothing created. And want to take them to your land. Capcut is the third more downloaded application in iOS worldwide (nine million downloads) and the ninth on Android (18 million downloads). In combined, 27 million users and the seventh application worldwide, above Telegram, Snapchat and Threads. They are barbarian figures for a video editing app. Instagram has especially optimized edits so that the videos uploaded from this app have the highest quality. Additionally, it has integrated creator statistics into the app itself so that creators have access to the panel from edits. Something very similar to what Tiktok does with Tiktok Studio. It is a shout to heaven so that creators stop using the bytedance tools (payment in the case of Capcut Pro) and begin to move towards the finish lines. Copy to kill. There is something that Meta knows how to do very well: copy functions. He did it in 2016 by launching Instagram Stories, A frontal blow (an almost accurate copy) of Snapchatbut integrated into an app with many more functions. Instagram Stories did not take Snapchat in superior active users, becoming one of the main monetization tools of the platform. Today, an ad is displayed every three stories. Next to nothing. In the case of Tiktok, Reels He has not managed to steal user base. But, again, Meta took the opportunity to copy a winning and emerging idea (the videos in short format), to get a new monetization tool. A golden opportunity. Today, Instagram is still the only real competition for Tiktok. If the app fails to survive in the United States, victory will be overwhelming (it is its second market outside of China). And there, as usual, goal will be prepared to bring all the functions and tools that were already present on the rival platform. Image | Xataka In Xataka | Instagram Reels: 21 tricks and functions to get the entire game to this alternative to Tiktok

We have been discussing whether it is a good idea or not bassinally during long flights. Crews are clear

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May not reach the level of the debate of whether the tortilla It must or should not carry onionbut when we talk about airplanes there are A dilemma that arises in virtually long flights: barefoot or not barefoot? Is it justified to take off your shoes to make a transoceanic flight of more than eight hours more? Is it uncivic? Is it unsafe? To start, do companies allow it? The debate jumps From time to time In networks. And surprising analysis and Surveys That is good to keep present. Travel and shoes. If you take the train or plane frequently, especially for long journeys, you will have seen it A few times (You may even do it yourself): There are passengers who, according to the trip, take off the shoes to be more comfortable. There are those that stay in socks. And others that directly leave their naked foot. It is a relatively common stamp. Just as it is to see how other passengers from the car or plane begin to look at those feet with anger. Click on the image to go to Tweet. A figure: 56%. It may seem a minor issue, but the flights (and train trips) with or without shoes is relevant enough for companies that have dedicated themselves to studying the topic thoroughly. An example is the Kayak platform, which in 2023 published A report with “the tacit rules” of air trips in which he collected the opinions of passengers on issues such as the use of support and players or telephone calls One of the issues he asked in his survey was the footwear in the planes. Are you okay if the flight is long? He obtained two answers, to each more striking. The first is that at least among the Americans there is no A clear opinion on whether it is correct or not take off your shoes on the plane. 56% believe that passengers must remain shoes, but as Slide Kayak itself That supposes that there is another 44% that differs from that opinion. Moreover, according to their data one in five people believe that it is fine to go to cleaning without shoes. Socks, the red line. In what is much more unanimity is that, although a traveler removes the shoes, heels or shoes, what he should never do is get the socks. 76% Of the surveyed by kayak it does not see that people dare of that garment in the airplanes. The percentage exceeds even those who consider that phone calls should not be made inside the plane or that to listen to music or watch movies you have to wear headphones. “It is unpleasant”. In other countries opinions are much more categorical. A while ago Jetstar made a similar survey Among more than 20,000 travelers and found that the majority “unworthy” that there are people who walk barefoot through the airport. The idea only convinces 6% of Australians and 9% of the Japanese. “An airport or plane is not a private living room,” says Zarife Hardy, responsible for the Australian School of label. “Remove your shoes in crowded spaces is coach for others.” In your opinion, you can get your shoes acceptable if we talk about long journeys, during which the traveler spends hours and hours in her seat, but Zariffe remembers That does not mean that I should be with the naked foot. “Wait for the plane to be flying and wear socks or slippers,” he advises. Education question … and personal hygiene. There is another reason why we should think twice if we should get our shoes on a plane. We may win comfort, but in the long run you can carry more serious problems. Especially if we are still barefoot when we want to go to cleaning. “On long -term flights I have realized that people (often children) walk barefoot towards or inside the bathroom,” Explain Jagdish Khubchandani, Professor of Public Health at New Mexico State University. “It is a very antihigienic trend with infection potential if someone has cuts or wounds.” “Sometimes it’s not water”. In case there were doubts about it, Leysha Pérez, regional flight assistant, even went further in An interview with Business Insider in which I explained why moving barefoot through a plane may not be the best idea in the world: “Sometimes what you see on the bathroom floor is not water. Surely body fluids are what you step on.” There are airline crew that directly They confess That “they would never” go barefoot to a bathroom, however long the flight is. “Walking on the barefoot or socks is disgusting,” They underline. And what do companies say? There are cases where traveling barefoot is not even an option. The reason: the airlines themselves prohibit it in their use policies. For example, American Airlines establishes Clearly that all its clients must dress in “appropriate” aboard their ships, and if there were doubts about it adds: “No bare feet or offensive garments are allowed.” Something similar occurs with Hawaiian Airlines, which remember that your staff can refuse to transport a client if you do not meet “the Hawaiian standards of clothing.” And that, clarifies, implies wearing “safety” shoes. Images | Kenny Eliason (UNSPLASH) In Xataka | We have been binding to the suitcases to identify them at the airport for years. Your employees warn that it is a bad idea

Astronauts have become very different from space after a long period outside the planet

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In June 2024, NASA Astronauts Butch Wilmore and Suni Williams arrived at the International Space Station for a mission of 8 to 10 days. However, the Starlliner ship problems They delayed their return Until March 2025286 days later. What began as a short stay became more than nine months of microgravity, which It can have deep effects In the body of astronauts: muscle atrophy, loss of bone density, cardiovascular alterations, vision and stress problems. This was its appearance before being thrown into the space in the Starliner ship: And this is its appearance when returning in the Crew Dragon ship that rescued them: Decades of aging Both NASA Like ESA They have studied in depth the effects of exposure to space and microgravity on the human body. One of the most common is the loss of muscle and bone mass. In the International Space Station there is no severity that forces the muscles and bones to work to sustain the body, so the tissues begin to weaken due to disuse. Astronauts lose about 1% bone mineral density for each month that pass in space. Their muscles, especially those of the legs and back, end up atrophy, hence they have trouble standing after landing on earth. To mitigate this effect, the ISS crew are subjected to railway routines: two hours a day on the running tape, static bicycle or resistance exercises. But it is not enough: a study published in Scientific Reports revealed that a stay of more than six months in space can cause bone losses equivalent to decades of aging on Earth. It is common for astronauts to have a greater risk of fractures due to the lower resistance of their bones, as if they were elderly. For Butch and Suni, with an expected bone loss of 9-10%, NASA has established An intensive 45 -day physical rehabilitation program. Even so, for many astronauts the recovery is incomplete even one year after returning. It is lacking two to four years for the muscles of a person to fully recover their original strength after a prolonged mission. Effects of microgravity Upon floating, body fluids are redistributed to the upper body, since gravity does not throw them towards the feet. This causes the swollen face feature seen in astronauts aboard the ISS. But it also has internal consequences: the body interprets that there is excess fluid and reduces total blood volume. With less blood volume and without the need to pump against gravity, the cardiovascular system relaxes. The heart can lose weight of its muscle walls and blood pressure tends to fall. Upon returning to the ground, this adjustment sometimes cause dizziness or even fainting (orthostatic hypotension), since gravity takes the blood again to the legs, and the bodyIt takes time to fall. Astronauts often use special compression suits or increase fluid and salt intake before the reentry to minimize these symptoms. Even so, it is common for them to remain seated, as happened with Butch and Suni when you get off the Crew Dragon, waiting for your body to be rebuilt. Another important physical effect discovered in the last decades of space exploration It is the so-called neuro-ocular syndrome associated with space flights (Sans). Without gravitational attraction, the displacement of fluids to the head can increase intracranial pressure, which in turn slightly deforms eye balloons and compresses the optic nerve. Many astronauts in prolonged stays report changes in their visual acuity: they can develop temporary farsightedness (difficulty seeing closely), which means that their eyes change under internal pressure. In long -term missions, More than 70% of astronauts They have come to suffer Sans. NASA Astronaut Scott Kelly, who spent a year in space and then be compared to his twin brother Markdeveloped an edema of the optic nerve and changes in the retina. Prolonged ungrampidity and the closed environment of the ISS also They affect the immune system of astronautscausing changes in the distribution of white blood cells and in the Expression of certain immune genes In response to the extreme environment. Paradoxically, living in the sterilized environment of ISS can weaken the immune response over time: by not exposing yourself to so many everyday pathogens, the immune system lowers the guard. Cutaneous eruptions, allergies and even reactivation of latent viruses (such as herpes) have been observed due to the decrease in defenses. Radiation and nine months of stress At the same time, prolonged missions astronauts accumulate significant exposure to Solar radiation and cosmic raysnot having the atmosphere as a protective shield. However, a nine -month stay is within the acceptable limits of NASA, since the ISS orbit the Earth only 400 km of altitude. Cell damage It will be a much greater problem In future long -term space flights to the moon and Mars. More worrying are the Psychological effects of prolonged confinement in a space station that orbits the earth 16 times a day. The schedules are not a problem because the ISS follows a strict time routine with the time of the Greenwich meridian. But the lack of natural cycles of light and dark can alter biological rhythms, cause sleep deprivation or reduce cognitive performance. In the end, what can happen more invoice is the psychological experience of being working in a confined environment, far from the family and with a handful of classmates from different countries. In the case of Butch Wilmore and Suni Williams, this situation was aggravated by uncertainty: its mission was extended due to technical problems, for a long time without a clear return date. Hence Wilmore’s daughter will mention stress Like a problem. The good news is that most body changes in space are not permanent. Approximately 95% of physiological alterations return to normal in the weeks after return. Astronauts typically recover their balance and ability to walk in a few days, fluid distribution is rapidly normalized and sleep disorders tend to improve by reestablishing terrestrial cycles. As for psychological sequelae, career astronauts are chosen for their predisposition to be rendered under … Read more

Its protagonists are humanoid robots and goes for long

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China is openly promoting the development of humanoid robots as its next great technological revolution after its success with electric cars. A few days ago, according to NikkeiShenzen activated a plan that includes financing and political support to promote advances in components, AI chips and biomimetic technologies. Why is it important. It is a movement that coincides and much with Elon Musk’s plans with Tesla, whose Optimus robot It could begin its production at the end of this year, first for internal use and then to market from 2026. This convergence has a lot to do with the entrance of Tesla in China and the effect it had when transforming its electric car industry. In figures. 56% of the 100 traded companies dedicated to robotics are based in China, according to A Morgan Stanley report. In addition, 45% of companies that customize robots for the end user are Chinese. The context. This plan is accompanied by several similar initiatives since 2023. Shanghai wants to create a 1 billion yuan robotics industry (about 137,000 million dollars) this year. While, Beijing has announced a fund of 13,000 million dollars for robotics and a humanoid innovation center. Paul Gong, head of automotive research at UBS Investment Bank, Describe To Musk as the “spiritual leader” of the sector, a paper that also played with electric vehicles. “The introduction of the concept of humanoid robot has led many Chinese companies to explore this address,” he says. The threat. The intensification of geopolitical tensions could have consequences. Lu Hanchen, director of Shenzhen Gaogong Industry Research, warns that the United States could restrict the export of optimus robots to China and block the entry of Chinese humanoid robots into the US market, referring to concerns about data security and data management. And now what? According to Bernstein Research projectionshumanoid robots could reach: By 2025: less than 10 million units for entertainment, R&D and education. By 2028: tens of millions for specific tasks in general environments. By 2035: more than 100 million for general tasks in hospitals and restaurants. By 2050: more than 1,000 million performing most human work. The collaboration with Chinese suppliers will be basic for Tesla. At the same time, Chinese companies will move trying to reduce foreign component dependence. It is an interesting paradox: Washington and Beijing have an increasingly tense relationship, but at the same time their industrial ecosystems remain intertwined. The race for humanoid robots is intuited as another scenario in which mutual dependence and atrocious competition between both blocks will have to live together. And the figure of Musk will win integers in that clash. In Xataka | Unitree is one of the Chinese technological jewels. He wants to do with robots the same thing Xiaomi did with mobiles Outstanding image | UNITREE

A long -term battery watch and wireless headphones

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If you usually play sports and you had time thinking about buying a clock and headphones to accompany you in your workouts, in Amazon we have found a perfect and cheap pack. Now you can get the Huawei Watch GT 5 and the Freebuds 5i On offer, by 229 euros. The savings you get with this pack is 65 euros. Huawei Watch Gt 5 41 + Freebuds 5i * Some price may have changed from the last review An ideal accessory pack for your smartphone This Huawei Watch GT 5 which stands out for bringing health monitoring to another level. Your screen is type 1.43 inches AMOLED and offers sharp resolution. In addition, its design is minimalist, so it is ideal to carry both in your training and in situations that require an apex of elegance. This smartwatch Integrates an advanced Trusen 5.0+ sensor, which continuously measures heart rate. It also has blood oxygen monitor (SPO2). Offers More than 100 sports modes and its GPS is high precision. As for Freebuds 5ithey are wireless headphones with 10 mm diaphragm. They are compatible with iOS and Android devices and connect by Bluetooth 5.2. Its autonomy is up to 6 hours with the cancellation of active noise and can be extended until 18.5 hours with the load case. Some straps to change the style of this watch Ruentech spare strap for huawei watch gt5 41mm * Some price may have changed from the last review Ruentech Compatible metal strap for Huawei Watch GT5 41mm * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Images | Huawei and Freepik In Xataka | Smartwatch with NFC: the best smart watches to pay what we have analyzed In Xataka | The best smartwatch: their analysis and videos are here

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