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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
Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications. Anastasia Vlasova/Getty Images "For Telegram, accountability has always been a problem, which is why it was so popular even before the full-scale war with far-right extremists and terrorists from all over the world," she told AFP from her safe house outside the Ukrainian capital. At this point, however, Durov had already been working on Telegram with his brother, and further planned a mobile-first social network with an explicit focus on anti-censorship. Later in April, he told TechCrunch that he had left Russia and had “no plans to go back,” saying that the nation was currently “incompatible with internet business at the moment.” He added later that he was looking for a country that matched his libertarian ideals to base his next startup. "There are several million Russians who can lift their head up from propaganda and try to look for other sources, and I'd say that most look for it on Telegram," he said.
from tw
