In his book Contra Toda Censura (Against All Censorship, in a literal translation, no official English translation available), the diplomat Gustavo Maulstach warns us that we are living in times of reversal of this trend with "an increasing number of people abandoning the fundamental read more principle of freedom of expression in favor of a belief

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In recent years, the performance of perovskite solar cells (PSCs) has made a significant growth of about 25.5%.Nonetheless, the long-term stability of these cells for industrial production is still a major concern.One of the important reasons for the instability and degradation of the perovskite layer is its sensitivity toward moisture, oxygen, lac

Real-time monitoring pure energy jeans of wire rope tension is of great significance to the safe operation of mine hoist.Due to the longitudinal and lateral coupling vibration of wire ropes during the operation of hoist, there are high frequency components in measured tension signals of wire ropes, which cannot effectively characterize the actual l