PSA's latest grading labels are commanding a premium, which experts think shouldn't be the case. (PSA / eBay) The reason people grade trading cards and seal them in plastic tombs in perpetuity is to ...

The scale of the money spent by the average hobbyist on Collectors brands, particularly PSA, is staggering when analyzing ...

A 1961-62 Fleer Wilt Chamberlain rookie card has been downgraded from a Gem Mint 10 to a Mint 9 by PSA. The difference in ...

Professional Sports Authenticator's parent company Collectors purchased Beckett, PSA's longtime rival in the card grading and ...

Geoff breaks down the recent PSA grading controversy, explaining what happened, why it happened, and whether concerns about conflict of interest are valid. Follow Geoff: Instagram: Twitter: TikTok: ...

Diagnosis and monitoring of complex diseases such as cancer require quantitative detection of multiple proteins. Recent work has shown that when specific biomolecular binding occurs on one surface of ...

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Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

CLI tool to bypass the PSA shortner links and return the final list of all the hosters hosting the episodes The purpose for this project is purely for educational purposes. PSARips is one of the few ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

The introduction of WHO standards for PSA assays is a step forward for improving the comparability of these tests. Our current clinical decision limits, however, were validated using traditional ...