Questões para Concursos

For the first time, 2025 will see quantum computers leave labs and research institutions and actually deploy into the networks and data centers of real-world customers. For quantum computing companies, this will be a real test of steel. It’s one thing to have a groundbreaking, powerful quantum computer that only works on its very best day — when the lab conditions are perfect and when the team of PhDs operating it are at the top of their game. But the reality is that quantum computers need to work on their worst days too — in the real world, in real organizations. The quantum computing companies that land on top will be the ones that have built for this challenge since day one. People tend to hear the words “quantum computing” and jump straight to science fiction or the multiverse. And while it seems daunting, we’ve actually reached a point where the “quantum” part of quantum computing is the easiest bit — it’s the “computing” that is inherently complex. For those on the front lines of building powerful quantum computers, this means it’s no longer a physics challenge — it’s an engineering one. Companies won’t need to know the ins and outs of quantum computers in order to leverage its unprecedented power — they’ll simply benefit from its ability to solve the problems that could never be solved on classical computers. Internet: (adapted).

For the first time, 2025 will see quantum computers leave labs and research institutions and actually deploy into the networks and data centers of real-world customers. For quantum computing companies, this will be a real test of steel. It’s one thing to have a groundbreaking, powerful quantum computer that only works on its very best day — when the lab conditions are perfect and when the team of PhDs operating it are at the top of their game. But the reality is that quantum computers need to work on their worst days too — in the real world, in real organizations. The quantum computing companies that land on top will be the ones that have built for this challenge since day one. People tend to hear the words “quantum computing” and jump straight to science fiction or the multiverse. And while it seems daunting, we’ve actually reached a point where the “quantum” part of quantum computing is the easiest bit — it’s the “computing” that is inherently complex. For those on the front lines of building powerful quantum computers, this means it’s no longer a physics challenge — it’s an engineering one. Companies won’t need to know the ins and outs of quantum computers in order to leverage its unprecedented power — they’ll simply benefit from its ability to solve the problems that could never be solved on classical computers. Internet: (adapted).

Researchers have unveiled long “hidden” and finely detailed tattoo designs on the skin of ancient mummies from Peru, a study reports. Tattoos were a prevalent art form in pre-Hispanic South America, as attested by the discovery of mummified human remains in the region with preserved skin decoration that date back centuries, and even millennia. While such body art works can provide insights into ancient cultures, tattoos are known to fade and bleed over time — a process compounded in mummies by the decay of the body. This often means that the original designs are difficult to make out. In the latest study, published in the journal Proceedings of the National Academy of Sciences , a team of researchers used a technique known as laser-stimulated fluorescence (LSF) to examine tattoos on mummified individuals belonging to the pre-Hispanic Chancay culture of what is now coastal Peru. The mummified remains that team of researchers examined were originally discovered in 1981 at the Cerro Colorado cemetery archaeological site in the Huaura Valley of Peru. The LSF technique revealed “exceptionally fine” and previously unknown details of the ancient tattoos. The team managed to identify intricate geometric and zoomorphic (representing animal forms) designs that were “very surprising” because they demonstrate a higher degree of artistic complexity than any other existing Chancay artwork, including on pottery and the culture's renowned textiles. The art of tattooing was clearly important to the Chancay, as evidenced by the high proportion of tattooed individuals among known mummified remains from the ancient culture. Hidden Tattoos Revealed on 750-Year-Old Ancient Mummies: ‘Very Surprising’. Internet: (adapted).

Researchers have unveiled long “hidden” and finely detailed tattoo designs on the skin of ancient mummies from Peru, a study reports. Tattoos were a prevalent art form in pre-Hispanic South America, as attested by the discovery of mummified human remains in the region with preserved skin decoration that date back centuries, and even millennia. While such body art works can provide insights into ancient cultures, tattoos are known to fade and bleed over time — a process compounded in mummies by the decay of the body. This often means that the original designs are difficult to make out. In the latest study, published in the journal Proceedings of the National Academy of Sciences , a team of researchers used a technique known as laser-stimulated fluorescence (LSF) to examine tattoos on mummified individuals belonging to the pre-Hispanic Chancay culture of what is now coastal Peru. The mummified remains that team of researchers examined were originally discovered in 1981 at the Cerro Colorado cemetery archaeological site in the Huaura Valley of Peru. The LSF technique revealed “exceptionally fine” and previously unknown details of the ancient tattoos. The team managed to identify intricate geometric and zoomorphic (representing animal forms) designs that were “very surprising” because they demonstrate a higher degree of artistic complexity than any other existing Chancay artwork, including on pottery and the culture's renowned textiles. The art of tattooing was clearly important to the Chancay, as evidenced by the high proportion of tattooed individuals among known mummified remains from the ancient culture. Hidden Tattoos Revealed on 750-Year-Old Ancient Mummies: ‘Very Surprising’. Internet: (adapted).

Climate change poses significant challenges to cattle farming, a sector vital to global food security. Among the most pressing concerns is the increasing frequency and intensity of droughts. Reduced rainfall diminishes pasture quality and availability, limiting feed for livestock and increasing water scarcity. This can lead to decreased animal growth rates, reduced milk production, and increased mortality rates. Moreover, prolonged droughts can contribute to desertification, shrinking available grazing land and forcing farmers to adopt costly alternative feeding strategies. Beyond drought, other climate-related impacts include heat stress, which can significantly impact animal health and productivity. Rising temperatures can exacerbate heat stress, leading to decreased feed intake, reduced fertility, and increased mortality in livestock. Furthermore, extreme weather events, such as heavy rainfall and flooding, can cause infrastructure damage, contaminate water sources, and lead to the loss of livestock. The cattle farming sector itself contributes to climate change through greenhouse gas emissions, primarily methane produced during animal digestion and nitrous oxide from manure management. Deforestation for pasture expansion also releases significant amounts of carbon dioxide. To address these challenges, a multi-pronged approach is crucial. • Genetic selection: Breeding programs focused on developing drought-resistant livestock breeds are vital. and heat-tolerant • Sustainable feeding strategies: Implementing precision feeding techniques, improving feed efficiency, and exploring alternative drought-resistant forage livestock resilience. feed sources, varieties, such as can enhance • Integrated farming systems: Integrating crop and livestock production, such as through agroforestry systems, can improve soil health, enhance water retention, and reduce greenhouse gas emissions. • Technological innovations: Utilizing technologies such as precision livestock farming, remote sensing for pasture monitoring, and renewable energy sources can improve resource efficiency and reduce the environmental footprint of cattle production. Furthermore, strong policy support, including incentives for sustainable farming practices, investments in research and development, and improved access to climate information services, are essential for the long-term sustainability of the cattle farming sector. Addressing the challenges posed by climate change requires a collaborative effort involving farmers, researchers, policymakers, and consumers. By embracing innovative solutions, prioritizing sustainable practices, and fostering a collective understanding of the importance of climate-resilient livestock production, we can ensure a future when this vital sector continues to thrive while minimizing its environmental impact. Internet: (adapted).

Climate change poses significant challenges to cattle farming, a sector vital to global food security. Among the most pressing concerns is the increasing frequency and intensity of droughts. Reduced rainfall diminishes pasture quality and availability, limiting feed for livestock and increasing water scarcity. This can lead to decreased animal growth rates, reduced milk production, and increased mortality rates. Moreover, prolonged droughts can contribute to desertification, shrinking available grazing land and forcing farmers to adopt costly alternative feeding strategies. Beyond drought, other climate-related impacts include heat stress, which can significantly impact animal health and productivity. Rising temperatures can exacerbate heat stress, leading to decreased feed intake, reduced fertility, and increased mortality in livestock. Furthermore, extreme weather events, such as heavy rainfall and flooding, can cause infrastructure damage, contaminate water sources, and lead to the loss of livestock. The cattle farming sector itself contributes to climate change through greenhouse gas emissions, primarily methane produced during animal digestion and nitrous oxide from manure management. Deforestation for pasture expansion also releases significant amounts of carbon dioxide. To address these challenges, a multi-pronged approach is crucial. • Genetic selection: Breeding programs focused on developing drought-resistant livestock breeds are vital. and heat-tolerant • Sustainable feeding strategies: Implementing precision feeding techniques, improving feed efficiency, and exploring alternative drought-resistant forage livestock resilience. feed sources, varieties, such as can enhance • Integrated farming systems: Integrating crop and livestock production, such as through agroforestry systems, can improve soil health, enhance water retention, and reduce greenhouse gas emissions. • Technological innovations: Utilizing technologies such as precision livestock farming, remote sensing for pasture monitoring, and renewable energy sources can improve resource efficiency and reduce the environmental footprint of cattle production. Furthermore, strong policy support, including incentives for sustainable farming practices, investments in research and development, and improved access to climate information services, are essential for the long-term sustainability of the cattle farming sector. Addressing the challenges posed by climate change requires a collaborative effort involving farmers, researchers, policymakers, and consumers. By embracing innovative solutions, prioritizing sustainable practices, and fostering a collective understanding of the importance of climate-resilient livestock production, we can ensure a future when this vital sector continues to thrive while minimizing its environmental impact. Internet: (adapted).

Climate change poses significant challenges to cattle farming, a sector vital to global food security. Among the most pressing concerns is the increasing frequency and intensity of droughts. Reduced rainfall diminishes pasture quality and availability, limiting feed for livestock and increasing water scarcity. This can lead to decreased animal growth rates, reduced milk production, and increased mortality rates. Moreover, prolonged droughts can contribute to desertification, shrinking available grazing land and forcing farmers to adopt costly alternative feeding strategies. Beyond drought, other climate-related impacts include heat stress, which can significantly impact animal health and productivity. Rising temperatures can exacerbate heat stress, leading to decreased feed intake, reduced fertility, and increased mortality in livestock. Furthermore, extreme weather events, such as heavy rainfall and flooding, can cause infrastructure damage, contaminate water sources, and lead to the loss of livestock. The cattle farming sector itself contributes to climate change through greenhouse gas emissions, primarily methane produced during animal digestion and nitrous oxide from manure management. Deforestation for pasture expansion also releases significant amounts of carbon dioxide. To address these challenges, a multi-pronged approach is crucial. • Genetic selection: Breeding programs focused on developing drought-resistant livestock breeds are vital. and heat-tolerant • Sustainable feeding strategies: Implementing precision feeding techniques, improving feed efficiency, and exploring alternative drought-resistant forage livestock resilience. feed sources, varieties, such as can enhance • Integrated farming systems: Integrating crop and livestock production, such as through agroforestry systems, can improve soil health, enhance water retention, and reduce greenhouse gas emissions. • Technological innovations: Utilizing technologies such as precision livestock farming, remote sensing for pasture monitoring, and renewable energy sources can improve resource efficiency and reduce the environmental footprint of cattle production. Furthermore, strong policy support, including incentives for sustainable farming practices, investments in research and development, and improved access to climate information services, are essential for the long-term sustainability of the cattle farming sector. Addressing the challenges posed by climate change requires a collaborative effort involving farmers, researchers, policymakers, and consumers. By embracing innovative solutions, prioritizing sustainable practices, and fostering a collective understanding of the importance of climate-resilient livestock production, we can ensure a future when this vital sector continues to thrive while minimizing its environmental impact. Internet: (adapted).

Climate change poses significant challenges to cattle farming, a sector vital to global food security. Among the most pressing concerns is the increasing frequency and intensity of droughts. Reduced rainfall diminishes pasture quality and availability, limiting feed for livestock and increasing water scarcity. This can lead to decreased animal growth rates, reduced milk production, and increased mortality rates. Moreover, prolonged droughts can contribute to desertification, shrinking available grazing land and forcing farmers to adopt costly alternative feeding strategies. Beyond drought, other climate-related impacts include heat stress, which can significantly impact animal health and productivity. Rising temperatures can exacerbate heat stress, leading to decreased feed intake, reduced fertility, and increased mortality in livestock. Furthermore, extreme weather events, such as heavy rainfall and flooding, can cause infrastructure damage, contaminate water sources, and lead to the loss of livestock. The cattle farming sector itself contributes to climate change through greenhouse gas emissions, primarily methane produced during animal digestion and nitrous oxide from manure management. Deforestation for pasture expansion also releases significant amounts of carbon dioxide. To address these challenges, a multi-pronged approach is crucial. • Genetic selection: Breeding programs focused on developing drought-resistant livestock breeds are vital. and heat-tolerant • Sustainable feeding strategies: Implementing precision feeding techniques, improving feed efficiency, and exploring alternative drought-resistant forage livestock resilience. feed sources, varieties, such as can enhance • Integrated farming systems: Integrating crop and livestock production, such as through agroforestry systems, can improve soil health, enhance water retention, and reduce greenhouse gas emissions. • Technological innovations: Utilizing technologies such as precision livestock farming, remote sensing for pasture monitoring, and renewable energy sources can improve resource efficiency and reduce the environmental footprint of cattle production. Furthermore, strong policy support, including incentives for sustainable farming practices, investments in research and development, and improved access to climate information services, are essential for the long-term sustainability of the cattle farming sector. Addressing the challenges posed by climate change requires a collaborative effort involving farmers, researchers, policymakers, and consumers. By embracing innovative solutions, prioritizing sustainable practices, and fostering a collective understanding of the importance of climate-resilient livestock production, we can ensure a future when this vital sector continues to thrive while minimizing its environmental impact. Internet: (adapted).

Climate change poses significant challenges to cattle farming, a sector vital to global food security. Among the most pressing concerns is the increasing frequency and intensity of droughts. Reduced rainfall diminishes pasture quality and availability, limiting feed for livestock and increasing water scarcity. This can lead to decreased animal growth rates, reduced milk production, and increased mortality rates. Moreover, prolonged droughts can contribute to desertification, shrinking available grazing land and forcing farmers to adopt costly alternative feeding strategies. Beyond drought, other climate-related impacts include heat stress, which can significantly impact animal health and productivity. Rising temperatures can exacerbate heat stress, leading to decreased feed intake, reduced fertility, and increased mortality in livestock. Furthermore, extreme weather events, such as heavy rainfall and flooding, can cause infrastructure damage, contaminate water sources, and lead to the loss of livestock. The cattle farming sector itself contributes to climate change through greenhouse gas emissions, primarily methane produced during animal digestion and nitrous oxide from manure management. Deforestation for pasture expansion also releases significant amounts of carbon dioxide. To address these challenges, a multi-pronged approach is crucial. • Genetic selection: Breeding programs focused on developing drought-resistant livestock breeds are vital. and heat-tolerant • Sustainable feeding strategies: Implementing precision feeding techniques, improving feed efficiency, and exploring alternative drought-resistant forage livestock resilience. feed sources, varieties, such as can enhance • Integrated farming systems: Integrating crop and livestock production, such as through agroforestry systems, can improve soil health, enhance water retention, and reduce greenhouse gas emissions. • Technological innovations: Utilizing technologies such as precision livestock farming, remote sensing for pasture monitoring, and renewable energy sources can improve resource efficiency and reduce the environmental footprint of cattle production. Furthermore, strong policy support, including incentives for sustainable farming practices, investments in research and development, and improved access to climate information services, are essential for the long-term sustainability of the cattle farming sector. Addressing the challenges posed by climate change requires a collaborative effort involving farmers, researchers, policymakers, and consumers. By embracing innovative solutions, prioritizing sustainable practices, and fostering a collective understanding of the importance of climate-resilient livestock production, we can ensure a future when this vital sector continues to thrive while minimizing its environmental impact. Internet: (adapted).

Grain poisoning of cattle and sheep Grain poisoning, also known as grain overload or lactic acidosis, is usually the result of stock consuming large quantities of grain or pellets to which they are unaccustomed. Pasture-fed cows or feedlot cattle not yet adapted to grain may become acutely ill or die after eating only moderate amounts of grain, whereas stock accustomed to diets high in grain content may consume large amounts of grain with little or no effect. Some circumstances under which grain poisoning can occur include: accidental access to grain stores; stock access to stubble paddocks containing excess grain after harvest; stock access to standing crops; cattle and sheep on feedlot rations without proper introduction; and grain feeding during drought without proper introduction. How is it caused? Grain and finely ground carbohydrate (such as found in pellets) is rapidly fermented by bacteria in the rumen, producing large quantities of lactic acid, which lowers the pH in the rumen. The build-up of acid has effects on the animal such as: there is a decrease in the numbers of useful bacteria in the rumen and an increase in the amount of acid-producing bacteria (causing further build-up of acid in the rumen), rumen contractions cease, lactic acid draws fluid into the rumen from the tissues and blood, resulting in dehydration, and, in severe cases, the blood may become more acid, resulting in heart failure, kidney failure and or even death. Grains with a higher fibre content, such as oats and sorghum, are safer to feed than, for example, wheat and barley, since the fibre slows the rate of digestion. Cracking grain increases the rate of digestion of the starch and consequently may increase the risk of grain poisoning. Any factor that causes variation in the intake of grain, or variation in the availability of carbohydrate, may lead to grain poisoning problems. For example, an unpalatable additive or inclement weather may put cattle off their feed on one day, but then they gorge the next day. The effects of grain poisoning may be worsened if the animal is also suffering from cold stress. It is a wise precaution to increase the proportion of roughage fed during particularly cold weather. Other sources of carbohydrates, such as apples, grapes, bread, baker’s dough and incompletely fermented brewer’s grain, can also cause poisoning if eaten in excess. Internet: (adapted).