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<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{"tag":"share_1","bdSize":32,"bdCustomStyle":"http://ats.taiwan.cn/homepage2021/css/bgBdShare2021.css"}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://103.249.53.35/gate/big5/bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>  </div> </div> <div id="bdShareBtn"></div> </div>  </div> <div class="contentArea"> <div class=TRS_Editor><p align="center">　　<img width="399" height="600" style="border-left-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-top-width: 0px" alt="" oldsrc="W020180620515729262690.jpg" src="./W020180620515729262690.jpg" /></p> <p>　　<font face="楷體,楷體_GB2312">臺灣清華大學化學系教授江昀緯說，最簡單的水分子，卻有最複雜的行為。（圖片來源：臺灣“中時電子報”）</font></p> <p>　　台灣網6月20日訊如果有天人類要去遙遠的星球太空旅行，需要冷凍數光年再復蘇，這就需要更進步的低溫保存方式。據臺灣“中時電子報”報道，臺灣清華大學化學系教授江昀緯實驗室利用電子自旋共振實驗技術ST-ESR，驗證水溶液降至-93℃的低溫下仍可有兩種不同液相存在，為細胞低溫保存技術的研究再推進一大步。</p> <p>　　由江昀緯與其指導的博士生郭雲軒共同完成的論文《水分子與蛋白質的動態關聯》，揭開了水與蛋白質互動的神秘面紗，最近登上美國化學會跨領域類頂尖期刊《ACS Central Science》，文章標題是《水“奴役”蛋白質運動嗎?》，顯示這項突破性研究成果的重要性。</p> <p>　　江昀緯說，水在低溫下並非如大眾認知的只有結冰一種樣態，光是水結冰的結晶態到目前為止就已經被發現超過21種，還有許多神奇的臨界現象。</p> <p>　　江昀緯團隊採用全臺灣僅有、價值四千多萬新台幣的電子自旋共振實驗設備ST-ESR，偵測水分子在低溫下的運動，觀察到在-33℃至-93℃的低溫下會發生“液-液臨界現象”。</p> <p>　　研究團隊還發現，調入微量甘油的水溶液在-13℃以下，就會進入“液相一”，溫度再降至-83℃“液相二”則會出現，這兩種液態相都相當穩定，但密度等性質不同，運動方式也不同。江昀緯說：“這現象似乎違反直覺，因為兩種相的組成物都一樣、都是液體，但在低溫下卻可以彼此分離，存在於蛋白質表面。”</p> <p>　　江昀緯解釋，一般的食物水果若以低溫冷凍，一旦結冰，細胞就易脹破，也就是說，結冰的固態是最不理想的保存方式，很容易造成蛋白質的損傷。未來人類若想完成數百年的太空旅行，將人體冷凍休眠的技術是關鍵，細胞一旦結冰受損，恐怕難以回復原來功能。他們的研究成果，為細胞的低溫保存提供新的思維。（台灣網王怡然）</p></div> <div class="editor f14">[責任編輯：王怡然]</div> </div>  <div class="page-number"> <script type="text/javascript"> createPageHTML(1, 0, "t20180620_11966845", "htm"); </script> </div>  </div>   <div class="content-plus"> <div 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