Недавно мы вас спрашивали, для чего нужны эти ключевые компоненты нефтехимии. Версии были разные, и лишь одна соответствует правде.
Итак, катализаторы ускоряют химические реакции во много раз.
Благодаря им многие процессы становятся в принципе возможными. Например, каталитическое получение такого ценного мономера, как пропилен, позволяет также с применением катализаторов получить полиэтилен. Из него делают пакеты, плёнки, бутылки и даже упаковки для лекарств.
Подробнее о катализаторах рассказываем в карточках.
Недавно мы вас спрашивали, для чего нужны эти ключевые компоненты нефтехимии. Версии были разные, и лишь одна соответствует правде.
Итак, катализаторы ускоряют химические реакции во много раз.
Благодаря им многие процессы становятся в принципе возможными. Например, каталитическое получение такого ценного мономера, как пропилен, позволяет также с применением катализаторов получить полиэтилен. Из него делают пакеты, плёнки, бутылки и даже упаковки для лекарств.
Подробнее о катализаторах рассказываем в карточках.
"Someone posing as a Ukrainian citizen just joins the chat and starts spreading misinformation, or gathers data, like the location of shelters," Tsekhanovska said, noting how false messages have urged Ukrainians to turn off their phones at a specific time of night, citing cybersafety. At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion. Markets continued to grapple with the economic and corporate earnings implications relating to the Russia-Ukraine conflict. “We have a ton of uncertainty right now,” said Stephanie Link, chief investment strategist and portfolio manager at Hightower Advisors. “We’re dealing with a war, we’re dealing with inflation. We don’t know what it means to earnings.” He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information. Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders.
from ua
