【正文】 在此分析的基礎(chǔ)上，可以合理的假設(shè)，高頻超聲能影響在水溶液中高分子膠束，并且，這種影響可以是對包含不穩(wěn)定化學鍵如在PEOβPTHPMA縮醛基團的聚合物顯著膠束。雖然空化效應(yīng)被減弱隨增加的超聲頻率，它不能在特別是在聚焦模式下的高的超聲波強度下被忽略。理論計算和實驗表明，超聲空化可以產(chǎn)生局部的溫度高達5000 K時，一個局部壓力高9達500個大氣壓，加熱和冷卻速率大于10 K / S。高強度聚焦超聲與焦斑的物質(zhì)比在其他地方有更強大的交互作用，并能產(chǎn)生熱和非熱效應(yīng)，這對于生物醫(yī)學治療和超聲化學反應(yīng)有用。正如上面提到的，高頻率，高強度聚焦超聲（HIFU）可以得到。將樣品通過澆鑄在干凈的云母表面的膠束溶液的滴接著干燥制得。對DLS測量之前。的角度制成。動態(tài)光散射（DLS）中的上一個布魯克海文BI200的測角儀用波長為λ=532納米的垂直偏振的入射光通過的氬激光在200毫瓦操作供給，布魯克海文 BI9000數(shù)字自相關(guān)器進行。將溶液在真空下于60℃干燥，直至水被完全除去以得到干燥的樣品。紅外光譜是在室溫下用Nicolet560傅立葉變換紅外（FTIR）光譜儀記錄的。首先，3種不同pH值（，）的緩沖溶液被用來校準pH計。超聲聚焦光束可以通過乳膠膜的滲透和作用于放置在一個管式反應(yīng)器的PEOBPTHPMA膠束溶液。39毫米的有效直徑和大約90毫米焦距的聲透鏡傳感器被安裝在一個裝滿水的水槽的底部，被指向向上超聲束被集中在一個直徑為約3毫米的圓形光斑里。該裝置的示意圖示于圖1b?？蛰d的NR在水溶液中沉淀。最后，THF通過在45℃的情況下蒸發(fā)24小時來除去。通常情況下，（THF）中，然后緩慢加入5ml水（約30微升，每30秒），以誘導(dǎo)微膠粒的形成。在本研究中使用的樣品是PEO112bPTHPMA164（組合物由1HNMR確定）。 PEObPTHPMA膠束的制備。根據(jù)日益增長的在探索超聲波來控制化學反應(yīng)方面的興趣，這一發(fā)現(xiàn)非常重要因為，因為它表明一種新的方式來開發(fā)超聲波敏感的嵌段共聚物膠束基于涉及不穩(wěn)定的化學鍵的超聲波引發(fā)的化學反應(yīng)。水解時，PEOβPTHPMA膠束是由增加的極性打亂由PTHPMA轉(zhuǎn)化為聚（甲基丙烯酸）（PMAA）（圖1）。使嵌段共聚物膠束對相對較弱的空化效應(yīng)有反應(yīng)，該聚合物應(yīng)該含有弱化學鍵，理想的機械性不穩(wěn)定和熱不穩(wěn)定的鍵對與氣蝕有關(guān)的機械和熱效應(yīng)敏感。PEOBPTHPMA的合理化使用可以由以下考慮。此外，根據(jù)外部刺激如pH變化，溫度變化，和光，兩親性嵌段共聚物的疏水四氫吡喃基甲基丙烯酸酯）（PEOBPTHPMA）形成的兩親性嵌段共聚物膠束對高頻超聲（）很敏感。 freight)成本加運費價T/T(telegraphic transfer)電匯D/P(document against payment)付款交單D/A(document against acceptance)承兌交單(certificate of origin)一般原產(chǎn)地證.(generalized system of preferences)普惠制CTN/CTNS(carton/cartons)紙箱PCE/PCS(piece/pieces)只、個、支等DL/DLS(dollar/dollars)美元DOZ/DZ(dozen)一打PKG(package)一包，一捆，一扎，一件等WT(weight)重量.(gross weight)毛重.(net weight)凈重(customs declaration)報關(guān)單EA(each)每個，各W(with)具有w/o(without)沒有FAC(facsimile)傳真IMP(import)進口EXP（export）出口MAX(maximum)最大的、最大限度的MIN(minimum)最小的，最低限度M 或MED(medium)中等，中級的M/V（merchant vessel）商船(steamship)船運MT或M/T(metric ton)公噸DOC(document)文件、單據(jù)INT（international）國際的P/L(packing list)裝箱單、明細表INV(invoice)發(fā)票PCT(percent)百分比REF（reference）參考、查價EMS（express mail special）特快傳遞STL.(style)式樣、款式、類型T或LTX或TX(telex)電傳RMB（renminbi）人民幣S/M（shipping marks）裝船標記PR或PRC(price)價格PUR(purchase)購買、購貨S/C（sales contract）銷售確認書L/C（letter of credit）信用證B/L（bill of lading）提單FOB（free on board）離岸價CIF（cost, insurance amp。variable exchange rate自駐經(jīng)營,自負盈虧responsible for their own management decisions, profits and losses 走上良性發(fā)展的軌道going on the track of sound progressshipping service pany船務(wù)公司generic products非商標(非專利)產(chǎn)品prudent monetary policy穩(wěn)健的貨幣政策deficit spending超前消費run on banks(到銀行)擠兌domestic support to agriculture對農(nóng)業(yè)的國內(nèi)支持special bonds特種債券economy of abundance富裕經(jīng)濟Animalbased protein動物源性蛋白dual purpose exports軍民兩用品出口dualuse goods and technology軍民兩用產(chǎn)品和技術(shù)NAFTA North American Free Trade Area北美自由貿(mào)易區(qū)global quota全球配額grandfather clause祖父條款A(yù)nimalderived food動物源食品EVSL(Early Voluntary Sectoral Liberalization)部門提前自愿自由化TILF(Trade and Investment Liberalization and Facilitation)貿(mào)易和投資自由化和便利化常見縮略：Camp。bogus pany平等互利、講求實效、形式多樣、共同發(fā)展的方針pursuing practical results, adopting various waysand seeking mon development/ the principle of equality, mutual benefit, efficiency, diversity and mutual development瓶頸制約 “bottleneck” restrictions企業(yè)的自我約束機制selfregulating mechanism of enterprises企業(yè)技術(shù)改造technological updating of enterprises企業(yè)虧損補貼subsidies to cover enterprise losses企業(yè)所得稅corporate ine tax千年問題、千年蟲millennium bug搶得先機take the preemptive opportunities清理、修訂screen and modify求同存異overe differences and seek mon ground商住和公益設(shè)施建設(shè)mercial, residential and public utility construction申報制度reporting system。create jobs in every possible way。Greece is said to be the cradle of Western civilization, for ancient Greece had a highly developed culture and it was from here that plenty of civilized ideas and new discoveries spread throughout ，并且一度到達過南美洲的北岸，但是他始終沒有意識到發(fā)現(xiàn)了一塊新大陸，而一直以為這塊地就是印度。Even today, no one knows with certainty how ancient Egyptians built the people even go as far as to consider that certain forms of extraterrestrial might have been ，因為古代希臘有過高度發(fā)達的文化。It was Egyptians who first used the 365day calendar, which, with certain changes, it now in use in many ，也沒有人能夠明確知道古代埃及人是怎樣建成金字塔的。During the Middle Ages, large amounts of silk were brought to the Middle East and Europe from China along the ancient Silk Road, which is still traceable ，標志著帝國主義一系列侵略中國領(lǐng)土的開端。The China’s great wall was built more than 2,000 years ago on the basis of joining together the forts built by feudal lords to protect their land against invasions by ，使得南北之間的交通相對來說比較困難，因此鐵路和公路成為了國家經(jīng)濟上必不可少的設(shè)施。the generators the station is to use will be the largest units in the ,000年到230,000年之間，能夠用火，并能制造石頭工具，是早期舊石器時期人類的一個好實例。Global climate changes, mainly seen in the gradual warming of the earth’s atmosphere, are attracting worldwide attention, for such changes could greatly impact the lives of world ，長江上的三峽發(fā)電廠是一項正在進行中的十分巨大的工程，該廠所要用的發(fā)電機將是世界上最大的機組。An island is land pletely surrounded by water。The Pacific Ocean is nearly as large as the other three bined, its deepest part being 10,973 m below sea level, a distance even greater than the height of the Earth’s tallest peak in the ，就是一塊四面環(huán)水的陸地，地球上有無數(shù)的島嶼，從最大的格陵蘭到只有幾米寬的小塊陸地不等。Unexpectedly, Silicon Valley is neither a place abundant in silicon nor a mountain has gained its name simply because it is a newly developed center of siliconbased electronics ，在地理上變化最多，其地貌包括巨大的、由沙漠覆蓋著的高原，也包括像喜馬拉雅山這樣的高山，而喜馬拉雅山的珠穆朗瑪峰是世界上最高的山峰。S of the ，硅谷既不是一個富有硅的地方，也不是一個山谷。Rubber, originally a product of Brazil in South America, spread to other countries in the latter half of the 19th , the bulk of the world’s rubber in grown between 10176?，F(xiàn)在，世界上大部分的橡膠，是生產(chǎn)在赤道南北各10176。Chinese scientist, for the first time, came to this region in July, 2004, to make scientific probes and ，春天和初夏是多雨季節(jié)，有許多日子會見到傾盆大雨，或者是跟隨著臺風而來的暴雨。its development will absolutely play a great role in speeding up China’s economic ，中國的科學家在2004年7月首次來到該地區(qū)，進行科學考察研究。The “Garden of Gardens”, Yuan Ming Yuan, which underwent 150 years of construction and renovation under five emperors in Qing