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• 2018-12-09 07:06發(fā)布了問(wèn)答

  油與水的乳化物是什么

  油與水的乳化物是什么

  300人看過(guò)

• 2018-07-24 10:20發(fā)布了問(wèn)答

  什么是復(fù)合功能建筑材料？

  復(fù)合功能建筑材料包括哪些？

  767人看過(guò)

• 2017-01-25 00:34發(fā)布了問(wèn)答

  聽(tīng)說(shuō)日本吹風(fēng)機(jī)做的很不錯(cuò)，想代購(gòu)一個(gè)，什么牌子比較好？

  　

  504人看過(guò)

• 2015-01-06 19:58發(fā)布了問(wèn)答

  求專業(yè)人士解析一下量子點(diǎn)全色域與熒光粉高色域差別~

  　

  763人看過(guò)

• 2014-09-15 05:49發(fā)布了問(wèn)答

  【交流】請(qǐng)教做過(guò)納米銀的高手：納米銀的顏色

  請(qǐng)教做過(guò)納米銀的高手：納米銀分散液是什么顏色？我合成的有點(diǎn)褐色，不避光放置一段時(shí)間后變成淺黃色，請(qǐng)問(wèn)是什么原因？濃度50nM左右。盼指點(diǎn)！謝謝收錄本帖的淘貼專輯推薦 納米銀

  430人看過(guò)

• 2013-11-05 20:29發(fā)布了問(wèn)答

  請(qǐng)問(wèn)如何能夠制作出量子點(diǎn)。（要詳細(xì)過(guò)程）

  如何制作出量子點(diǎn)？CdSe量子點(diǎn)制備的量子點(diǎn)樣品是液態(tài)的么？為什么？

  261人看過(guò)

• 2013-03-06 20:51發(fā)布了問(wèn)答

  凈水器的什么材質(zhì)的過(guò)濾芯片能凈化礦物質(zhì)？

  買了一個(gè)安之源的活性炭過(guò)濾芯片，他們只會(huì)過(guò)濾有害物質(zhì)。不會(huì)過(guò)濾礦物質(zhì)。這是真的嗎。

  597人看過(guò)

• 2011-09-23 02:56發(fā)布了問(wèn)答

  哪里有賣機(jī)油清洗劑的？我衣服上經(jīng)常沾污一些機(jī)油，不容易洗掉。

  　

  318人看過(guò)

• 2011-06-02 20:44發(fā)布了問(wèn)答

  反絨皮弄到油跡怎么清洗?

  我的鞋子不小心弄到一點(diǎn)食用油，鞋子是棕色的，現(xiàn)在那被油跡弄到的變黑點(diǎn)了，用洗潔精和去污粉都洗不掉，而且上次有去污粉用牙刷刷，表面變顏色了，現(xiàn)在該怎么辦？

  478人看過(guò)

• 2010-12-13 22:50發(fā)布了問(wèn)答

  英文翻譯——物理專業(yè)2

  請(qǐng)幫忙翻譯這段文字QD-Protein Conjugate Preparation. Bioconjugate complexes were prepared by adding appropriate amounts of Cy3-labeled and unlabeled MBP to 100，uL of 10 mM sodium tetraborate buffer solution (pH 9). Approximately 24 pmol of D... 請(qǐng)幫忙翻譯這段文字QD-Protein Conjugate Preparation. Bioconjugate complexes were prepared by adding appropriate amounts of Cy3-labeled and unlabeled MBP to 100，uL of 10 mM sodium tetraborate buffer solution (pH 9). Approximately 24 pmol of DHLA capped QDs were added to the MBP solution and allowed to self-assemble for ~15 min at room temperature. Molar ratios of MBP-Cy3 to QDs were discretely varied among samples from 0 to 10 while the overall ratio of MBP (labeled and unlabeled) to QD was maintained at 15 (see sketch in Figure 1). The individual samples were then diluted with sodium tetraborate buffer to a total volume of 3 mL. The solutions were placed in a 10 mm optical path quartz fluorescence cuvette (FUV， Spectrocell， Oreland， PA)， and the emission spectra were measured using a SPEX Fluorolog-2 fluorimeter (Jobin Yvon/SPEX， Edison， New Jersey). All samples were excited at 430 nm， which is near the minimum of the Cy3 absorption spectrum in order to reduce interference from direct excitation of the acceptor (see Figure 2). Furthermore， control spectra collected from MBP-Cy3 conjugates in the absence of QD donors were recorded and subtracted from the solution spectra to adjust for dye emission exclusively due to direct excitation. To avoid inner filtering effects， QD conjugate preparations with optical density (OD) at the excitation line below 0.05 were used in all experiments. 展開(kāi)

  535人看過(guò)

• 2008-05-03 01:03發(fā)布了問(wèn)答

  活性炭會(huì)不會(huì)過(guò)濾掉水中的礦物質(zhì)？

  　

  330人看過(guò)

• 2006-03-03 03:52發(fā)布了問(wèn)答

  納米技術(shù)是什么

  請(qǐng)高人指點(diǎn)一下現(xiàn)在所說(shuō)的納米技術(shù)是什么意思！

  649人看過(guò)