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Sometimes someone comes in and they' ve dropped a specimen and it' s in pieces, and you see the look on their faces, and so you never know what' s going to come in, really. One problem though is a constant battle. Head of Conservation Chris Collins needs to save thousands of specimens from being blown apart by an affliction known as pyrite decay. A yellow, and yellowish green colour powders are where the pyrite has oxidised and deteriorated. This specimen is defined by the ribs and already we' re losing some of the rib structure in it, so this has to be treated as soon as possible. Chris is using a pioneering technique to stop these fossils from being turned into dust. So in this fume cupboard we got an ammonia gas environment, and we' re gonna put this specimen to the ammonia gas. This is a specimen I did earlier on, and you can see the deterioration has now been stopped in this, so now we have to take this specimen and put it straight away into oxygenfree environment. |
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yǒu shí hou rén men jìn lái zhè lǐ, tā men de biāo běn diào zài dì shàng, sì fēn wǔ liè. nǐ gāi kàn kàn tā men de biǎo qíng, nǐ yǒng yuǎn cāi bú dào xià yī ge bìng rén shì shén me yàng. yǒu yí gè wèn tí shì xiǎo zǔ de sù dí, wéi hù zǔ zǔ zhǎng kè lǐ sī kē lín sī, xū yào bì miǎn shàng qiān huà shí zhōng de huáng tiě kuàng fǔ shí zuò yòng, bì miǎn huà shí sì fēn wǔ liè, zhèi xiē huáng sè hé huáng lǜ sè de fěn mò, shì bèi huáng tiě yǎng huà fǔ shí de hén jī. zhè gè shì gè mài zhuàng biāo běn, xiàn zài yǐ jīng yǒu yī bù fen mài zhuàng jié gòu bèi fǔ shí. zhè gè biāo běn yào jǐn kuài hù lǐ, kè lǐ sī zì yǒu yī tào duì fù fǔ shí fáng zhǐ huà shí bēng jiě de bàn fǎ. zhè gè yān chú lǐ chōng mǎn le ān qì, wǒ men jiāng yòng ān qì xūn chuī biāo běn. zhè shì wǒ zhī qián chǔ lǐ de biāo běn, nǐ kě yǐ kàn dào fǔ shí yǐ jīng tíng zhǐ le, wǒ men xiàn zài lì kè yào bǎ zhè gè biāo běn cún fàng zài wú yǎng huán jìng zhōng. |