What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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我幫蟑螂準備酒精好了 XD
你怕蟑螂牠怕你 研究:蟑螂被人觸碰會崩潰清理身軀
e-info.org.tw/node/242911

你怕蟑螂牠怕你 研究:蟑螂被人觸碰會崩潰清理身軀

其實蟑螂也嫌我們髒? 從小到大,生活的環境中難免會看到蒼蠅或蟑螂等昆蟲。除了目睹各種爬行和起飛外,不少人會看到牠們停在平面上搓手或搓觸角。這種搓一搓的梳理動作乍看無意義,但其實對蟑螂和許多昆蟲來說,這其實是「擦亮」感官的絕佳方式。 蟑螂觸角上有許多細微的毛孔,用於感知環境及氣味,如果被分泌物堵住,將會損害嗅覺接收的能力。圖片來源:AI生成 蟑螂搓手又梳頭不是愛美,而是為了打開感官? 行為生物學家博羅茲基(Katalin Böröczky)及蕭爾(Coby Schal)等人在《美國國家科學院院刊》(PNAS)上的研究顯示,如果阻止美洲蟑螂梳理自己的觸角,經顯微鏡檢視,可以看到未清潔的觸角上,堆積著一層自體分泌的「表皮碳氫化合物」(CHCs),讓整個表面看起來十分平滑。 據他們觀察,在24小時內,未經清潔的觸角上堆積的表皮碳氫化合物,是有清潔過的三至四倍。「少量的表皮碳氫化合物對蟑螂等昆蟲來說不可或缺,這是避免牠們流失水分的重要物質。」蕭爾表示。 不過,由表皮碳氫化合物堆成的平滑表面,卻不是蟑螂所樂見的。 因為蟑螂原本的觸角上有許多細微的毛孔,用於感知環境及氣味,如果被分泌的表皮碳氫化合堵住,會損害嗅覺接收的能力。 這就像是人類的眼睛被矇住、鼻子被塞住一樣,由於感官受限,無法準確找到要走的路和辨識周遭環境。這也是為什麼蟑螂會需要頻繁地梳理自己的原因。 當觸角表面沾染到油脂、灰塵、分泌物甚至是人類皮膚上的化學殘留物,牠們會立即展開「清洗程序」:前腳不停搓揉,口器細細舔拭,像在給觸角做全套清潔護理。 梳理動作不是只有蟑螂才會,不同昆蟲各有不同梳法 不只人人喊打的蟑螂,梳理(grooming)這個動作,本身就是動物身上常見的行為,例如貓舔自己的毛髮,猴子幫同伴梳毛等。 其他昆蟲一樣會規律梳理自己,除了清除身上的碎屑、病原體外,牠們也和蟑螂一樣,也會透過梳理,來清掉觸角上隨時間累積的表皮碳氫化合物。因為如果不清理,蟑螂、蒼蠅、螞蟻等昆蟲,觸角上的表皮碳氫化合物也會增加,進而影響到牠們的反應靈敏度及感知能力。 然而,不同昆蟲各有自己清潔梳理的方式。 例如美洲蟑螂及德國蟑螂,是利用前腳將對側觸角拉至口器,用有點像是把多跑出來的捲筒衛生紙慢慢捲回去的方式,從最根部清到尖端。 賓州弓背蟻會透過前腳的特殊結構來清潔同側觸角,後續再用口器清潔前腳。而大家最常看到在搓手的家蠅,則不會透過口器,而是直接用前腳來梳自己。 觀察乍看違反直覺的行為,可能對害蟲防治有幫助? 「昆蟲會清除觸角上的異物,這很符合直覺,但要了解他們梳理自己,是為了移除自己分泌的物質,這可能不見得那麼直覺。」蕭爾表示。不過無論如何,這項研究發現的證據十分明確,那就是許多昆蟲都會透過梳理自己,以維持外來異物及自身分泌物的平衡。 這個研究結果對害蟲防治開了扇窗。有鑒於蟑螂等昆蟲的梳理行為,如果將殺蟲劑的噴霧或粉塵改鎖定附著在牠們的觸角上,蟑螂就有可能會因為不斷理毛的行為,將藥劑迅速攝入體內。這種殺蟲方法,或許比依賴殺蟲劑穿透他們厚實的外殼更有效。 ※ 本文經授權轉載自《關鍵評論網》,原文標題〈研究:蟑螂被人類觸碰後會崩潰清理身軀,因為人的油脂會害死牠〉。不適用CC共創授權條款。 

e-info.org.tw · 環境資訊中心

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올해 개인적 예언 : 새해부터는 새 사람이 되겠습니다! 2월부터는 새 사람이 되겠습니다! 3월부터는 진짜 새 사람이 되겠습니다! 4월부터는 다시 태어나는 마음으로 살겠습니다! 5월부터는 달라지겠습니다! 6월부터는 진짜 달라지겠슺니다! 7월부터는 뭐야 벌써 한해가 반도 안 남았자나? 걍 살어 8월은 덥당 히히 9월은 아직도 덥당 히히 10월은 왜 아직 덥지 히히히 11월은 으헤헤헤엣취! 뭐야 갑자기 개추워 12월은 아니 뭐했다고 한해가 다 갔냐ㅜ 내년부턴 진짜 새사람 된다 (반복)

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Friend randomly sent me a link to typ.ing cuz he thought it was cool. He got a new keyboard recently and really liked it. Got a result of 99wpm! I was impressed and decided to give it a try for the lolz. Last time I measured my typing speed I remember something like... 50? Got 72 😂 I guess my typing speed probably got better after switching to Dvorak and a Kinesis keyboard.

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'허락보다는 용서가 쉽다' 따위 개소리하던 플스도 결국 깔끔하게 포기하고 가족 마케팅ㅋㅋㅋ PC(not Personal Computer)는 자본주의의 산물입니다 아시겠습니까?

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Nově objevená exoplaneta, nacházející se relativně blízko (146 světelných let), má asi 51% šanci nacházet se v obyvatelné zóně své hvězdy. Hodně by záviselo na složení a hustotě atmosféry - pravděpodobnost, že klima planety připomíná spíš Mars, než Zemi, je poměrně velká.

Planeta HD 137010 b byla objevena analýzou starších dat observatoře Kepler.

Planety na vzdálenějších oběžných drahách, podobných Zemi, je daleko těžší v datových sadách identifikovat. Přechod této planety přes pozorovatelný kotouč svojí mateřské hvězdy trvá 10 dní (v případě Země by to bylo 13 dnů)

astrobiology.com/2026/01/exopl

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대체 산지인 남미 지역 ← 보고 잠깐 뇌가 고장났어요 카카오는 원래 남미가 원산지잖아 아프리카가 대체 산지인데 대체 산지가 더 커진 것 뿐이잖아요?!

RE: https://bsky.app/profile/did:plc:a6qvfkbrohedqy3dt6k5mdv6/post/3mdwojnfndk27

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물을 끓여 터빈을 돌린다는 점에서 심지어 원자력 발전소도 증기기관인 셈인데, 중국에서 물 대신 초임계 이산화탄소를 쓰는 엔진을 만들어 현장에 배치. 훨씬 효율적이고 터빈 크기도 작다고. 원자력발전소에 쓰면 안전성이 올라간다고도 한다. www.scmp.com/news/china/s...

Nuclear tech milestone: China’...

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대체 산지인 남미 지역 ← 보고 잠깐 뇌가 고장났어요 카카오는 원래 남미가 원산지잖아 아프리카가 대체 산지인데 대체 산지가 더 커진 것 뿐이잖아요?!

RE: https://bsky.app/profile/did:plc:a6qvfkbrohedqy3dt6k5mdv6/post/3mdwojnfndk27

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코코아 가격 1년새 67% 하락…"초콜릿은 왜 안 내리나" n.news.naver.com/mnews/articl... 코코아 선물 가격 톤당 4000달러 선, 최고점 대비 '3분의 1토막' 급등 당시 제과업체 일제히 제품 가격 인상, 롯데웰푸드 2차례 올려 대체 산지인 남미 지역의 코코아 재배 급증이 가격 안정화에 기여했다.

코코아 가격 1년새 67% 하락…"초콜릿은 왜 안 내리...

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任天堂慶賀榜單
Nintendo Switch 2
持續保持史上銷售最快的遊戲機紀錄
短短半年銷量就高達1737萬!!!
已超越WiiU的生涯銷量1356萬

所以可能要任天堂今天就宣布停產
才能符合認為NS2是WiiU2的期待了🤪
#任天堂

May be an image of video games, videogame controller and text that says '電玩史上最速 1500萬 …'
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고양고양이가 하루 아침에 바뀌었던 거 기억하시나요? 그 바람에 마스코트 업체가 팔길이 없어져 울었단 사실을 아시나요? 그 가여운 악성재고가 되어버린 고양고양이들과 업체를 도울 길이 있단 걸? 사람들이 서로 연결되면 길이 있다! 펌) 해당 제작 업체와 연락이 닿아 금일 오후 8시부터 퓨서 자사몰에서 고양고양이 키링 2종 마우스패드 1종 재고 판매가 시작될 예정입니다! bebravefuseo.com 출처 x.com/bebravefuseo...

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Alexander Venner,
currently studying at the Max Planck Institute for Astronomy,
picked his way by hand through the data collected by a now-retired NASA space-based telescope called Kepler,
which was used to examine the sky for exoplanets during a survey of 500,000 stars that ended 8 years ago.

Datasets like these are huge, and often combed through with search algorithms,
but the PhD student managed what others did not by rolling up his sleeves, so to speak.

“It was completely missed,” Mr. Venner told Science Magazine about his discovery, presented at the Rocky Worlds conference in Groningen.

“The best way to detect it was to actually just look."

At just 146 light years away, it’s close enough for Kepler to have recorded the presence of such a small planet,
and for the most powerful telescopes of the day to record it in great detail.

Scientists look for exoplanets by centering a telescope on a distant star and waiting to see  a dip in the star’s light,
indicating there’s something orbiting the star large enough to reduce the light signal—a planet.

This is called the transit method.

The first man to ever identify an exoplanet this way concluded shortly after there must be millions of them.

Indeed, the number of known planets beyond our solar system has passed 6,000,
-- yet those which are Earth-like in orbit and mass number merely a few dozen.

Most known exoplanets are large and hot,
making for easy detection because of the larger dips in light described earlier.

Smaller, Earth-sized, rocky worlds orbiting within their star’s habitable zone are not only of the greatest interest to scientists, they’re also much harder to spot, since they’re cooler and smaller.

Search algorithms passed over its faint signal in the Kepler data.

Venner came across the data through the "Planet Hunters" project
which recruits citizen scientists and volunteer enthusiasts to search through data from Kepler and other planet-hunting telescopes to look for signals left behind by larger surveys.

The exoplanet orbits a
"K-dwarf star" designated
.

This planet is called

goodnewsnetwork.org/citizen-sc

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Wer Radwege sät, wird Radverkehr ernten. 🚴🚴

investiert in den Ausbau von Radinfrastruktur. Und das wirkt: Aktuelle Zahlen zeigen, dass der Radverkehr zunimmt. 🧡 Der Autoverkehr dagegen nimmt ab.

Verkehrssenator Anjes Tjarks sagt: „Wir arbeiten daran, die Alternativen zum eigenen Auto so attraktiv zu gestalten, dass sie die bessere Wahl für immer mehr Bewohner unserer Stadt sind.“

Mehr dazu: sueddeutsche.de/wirtschaft/ver

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