Nā Kūleʻa Kūʻai Mākēneki Ka Honua (250318)

ʻO ka mākeke Spot Kina - Rare Earth Magnet Materials i kēlā me kēia lā, no ke kuhikuhi wale ʻana!

▌Kiʻi kiʻi mākeke

Pr-Nd Alloy

• Lahui o keia manawa: 543,000 – 547,000
• Kūʻai Kūʻai: Paʻa me nā loli haiki

ʻO Dy-Fe Alloy

• Lahui o keia manawa: 1,630,000 – 1,650,000
• Kūʻai Kūʻai: Kākoʻo ke koi ikaika i ka piʻi ʻana

Nā Mākēneki Superconducting ma MRI: Ka pololei a me ka hana hou (598 chars)
Ke hilinaʻi nei nā mea nānā MRI o kēia manawa i nā coils superconducting niobium-titanium (NbTi) i hoʻoluʻu ʻia e ka helium wai e hoʻoulu ai i nā māla 1.5-7T. Nā holomua koʻikoʻi:

• ʻO ka homogeneity kahua: Hoʻoponopono nā wili ʻālohilohi ≤0.5ppm me ka hoʻohana ʻana i ka palapala palapala B₀ manawa maoli (TR=2ms)
• Hooponopono kinai: Hoʻopau nā pahu hoʻomaha hoʻomaha nui i ka ikehu 15MJ i 0.3s i ka wā o ka pau ʻole o ka coil
• Cryogenics: Mālama nā cryocoolers pani ʻia i ka 4.2K me <10⁻⁶ W/㎡ leaka wela.

Nā hōʻailona hana:

• Nb₃Sn wili: Loaʻa iā 21T @ 15K (Brookhaven Lab 2024), hiki i ka ultra-high-field MRI
• Pūnaehana Zero-boiloff: E kūʻai i 1500L helium no 10+ mau makahiki ma o ka pahu hau hoʻoheheʻe magnetic (NASA-deriger tech)
• Kiʻi kiʻi hoʻokele AI: Hoʻokumu hou ka aʻo hohonu i ka 0.5mm切片图像 mai 50% ʻikepili maka (缩短扫描时间42%)

Ka hihia ʻoihana: ʻO ka ʻōnaehana 7T Terra ʻo Siemens e hōʻemi i ka walaʻau acoustic i 85dB (vs. 110dB常规MRI) ma o ka hoʻopau ʻana i ka vibration ikaika, e hoʻonui ana i ka hōʻoluʻolu o ka maʻi.