#HCN
Live, measured metrics for the hashtag #HCN from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #hcn
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.online (Mastodon public tags API) · fetched 2026-09-28 18:52 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.online (Mastodon public search API) · fetched 2026-09-28 18:52 UTCLive pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-09-28 18:52 UTCEverything below is measured over the latest 16 public posts (spanning ~42486 hours).
Posting hours (UTC) — busiest: 05:00
Languages: English (12) · Chinese (Taiwan) (1) · Portuguese (1) · Dutch (1) · German (1)
Avg boosts / post: 2.1
Top of the latest posts
【你所不知道的焚化爐 —— 酸雨精靈氮氧化物】 氮氧化物 NOx 是形成酸雨的兩大核心主因之一，但在科學與歷史上，它與另一個主角——二氧化硫 SO2 共同分擔了這個頭銜。在現代環境中（尤其是汽機車密集的都市區域），NOx 對酸雨的「貢獻度」甚至有逐漸超越 SO2 的趨勢。 在垃圾焚化過程中，主要有兩種前驅物會生成氮氧化物NOx，分別是NH3（氨氣）和HCN（氰化氫）。NH3來自於生物質氮，包括廚餘、園林剪草、皮革、羊毛……等，NH3具有觸發「爐內自我脫硝（Self-DeNOx
Weekly Update from the Open Journal of Astrophysics 13/06/2026 It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further three papers, bringing the
Expatriates are the focus of much research in global mobility because they are often strategically important and costly. But what about the host country nationals (HCNs) they work with? Despite decades-old calls for more attention to HCNs,
#hcn across platforms
every network with a public tag surfaceFollow #hcn straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/hcn