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♦️ولکانیزاسیون: پرمصرف‌ترین و معمول‌ترین عامل ولکانش، گوگرد می‌باشد که با اکثر لاستیک‌های سیرنشده وارد واکنش شده و تولید فراورده ولکانیده می‌کند. گوگرد به دو آرایش رومبیک و بی‌شکل وجود دارد. دو عنصر سلنیم و تلوریم نیز قادر هستند محصولات ولکانیده تولید کنند. سلنیم و تلوریم در جایی‌که مقاومت گرمایی عالی مورد نیاز است جایگزین گوگرد می‌شوند. این مواد زمان پخت (ولکانش) را کاهش داده و خواص فراورده را بهبود می‌بخشند. @materials_parspajouhaan
♦️ولکانیزاسیون: پرمصرف‌ترین و معمول‌ترین عامل ولکانش، گوگرد می‌باشد که با اکثر لاستیک‌های سیرنشده وارد واکنش شده و تولید فراورده ولکانیده می‌کند. گوگرد به دو آرایش رومبیک و بی‌شکل وجود دارد. دو عنصر سلنیم و تلوریم نیز قادر هستند محصولات ولکانیده تولید کنند. سلنیم و تلوریم در جایی‌که مقاومت گرمایی عالی مورد نیاز است جایگزین گوگرد می‌شوند. این مواد زمان پخت (ولکانش) را کاهش داده و خواص فراورده را بهبود می‌بخشند. @materials_parspajouhaan
In 2014, Pavel Durov fled the country after allies of the Kremlin took control of the social networking site most know just as VK. Russia's intelligence agency had asked Durov to turn over the data of anti-Kremlin protesters. Durov refused to do so. The company maintains that it cannot act against individual or group chats, which are “private amongst their participants,” but it will respond to requests in relation to sticker sets, channels and bots which are publicly available. During the invasion of Ukraine, Pavel Durov has wrestled with this issue a lot more prominently than he has before. Channels like Donbass Insider and Bellum Acta, as reported by Foreign Policy, started pumping out pro-Russian propaganda as the invasion began. So much so that the Ukrainian National Security and Defense Council issued a statement labeling which accounts are Russian-backed. Ukrainian officials, in potential violation of the Geneva Convention, have shared imagery of dead and captured Russian soldiers on the platform. In February 2014, the Ukrainian people ousted pro-Russian president Viktor Yanukovych, prompting Russia to invade and annex the Crimean peninsula. By the start of April, Pavel Durov had given his notice, with TechCrunch saying at the time that the CEO had resisted pressure to suppress pages criticizing the Russian government. 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. "Russians are really disconnected from the reality of what happening to their country," Andrey said. "So Telegram has become essential for understanding what's going on to the Russian-speaking world."
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