<small id="mxhh4"><thead id="mxhh4"></thead></small><tt id="mxhh4"><menu id="mxhh4"></menu></tt>
    1. <blockquote id="mxhh4"></blockquote>
    2. <blockquote id="mxhh4"></blockquote>

    3. 首頁 > higher
      全部論文
      電力論文   |   建筑論文  |  機械論文  |  化工論文  |  石油論文  |  冶金論文  |  礦產論文  |  材料論文  |  電子論文  |  航空航天論文  |  通信論文  |  計算機論文  |  水利論文  |  地質論文  |  鐵道論文  |  汽車論文  |  管理論文  |  農業論文  |  食品論文  |  醫學論文  |  海洋論文  |  船舶論文
      • An Analysis of Liberal Education in Western Culture

        Through an analysis of liberal education's definitions and characteristics in western culture,some suggestions towards China' s higher education are put forward in the end of the paper,with the hope that improvement and innovations would occur in the Chinese higher learning system....

        2020-11-22 17:58:37瀏覽:30 liberaleducationwisdomhighqualityhigher

        查看
      • 河南省高職院校校名英文翻譯分析

        通過對河南省50所高職院校英文校名的分析,并結合嚴復的"信達雅"原則,借鑒對比國內和國外高校同類院校的校名,對河南省高職院校英文校名的英語翻譯提出了規范化建議。...

        2020-11-03 10:30:25瀏覽:18 高職院校英文校名規范化higherVocationalschoolsEnglishschoolnameStandard

        查看
      • Conversion of syngas to higher alcohols over Cu-Fe-Zr catalysts induced by ethanol

        Ethanol induced method was applied to prepare Cu-Fe-Zr catalysts for conversion of syngas to higher alcohols. The catalytic performance of the catalysts induced by ethanol was superior to that of the catalyst prepared by the conventional precipitation method. Among various procedures for ethanol induced method,it was found that incorporation of ethanol in the precipitation process was the better. After incorporation of ethanol,the crystal size of CuO decreased and the reduction of copper species became easier. The better activity of Cu-Fe-Zr catalysts prepared by ethanol induced procedures was probably caused by the higher dispersion of Cu species....

        2020-10-22 17:35:41瀏覽:16 Fe-Cu-ZrcatalystCOhydrogenationhigheralcoholsinducedbyethanol

        查看
      • 改性Fe-Cu催化劑上由合成氣合成酮和醇

        采用熔融法制備了三類改性催化劑FeCuVKMn,FeCuVKCe和FeCuVKCo,可用于有效地合成低級酮和低碳醇. 在一定的溫度范圍內,CO轉化率、C2+OH選擇性及酮和醇的收率隨反應溫度的升高而升高; FeCuVKCo表現出比其他催化劑更寬的活性溫度區間; 適量加入助劑可使Fe-Cu催化劑的催化性能顯著改善. 催化劑活性及選擇性的高低順序是FeCuVKMn》FeCuVKCo》FeCuVKCe》FeCuVK; 最高活性溫度的高低順序是FeCuVK=FeCuVKCe》FeCuVKMn》FeCuVKCo....

        2020-10-02 20:35:09瀏覽:26 低碳醇合成氣鐵-銅基催化劑higheralcoholketonesyngasiron-copperbasedcatalyst

        查看
      • 合成氣制低碳醇的經濟性分析

        介紹了國內各科研機構合成氣制低碳醇的研發現狀:從應用上看低碳醇經分離提純后各單醇組分做商品醇比混合醇組分做燃料醇更為切實可行;同時目前普遍的觀點是混合醇組分中G2-OH組分越高,項目經濟性越好,但經分離模擬,發現該項目以合成乙醇為目標最為經濟可行。...

        2020-10-02 20:35:09瀏覽:28 低碳醇燃料醇分離經濟性higheralcoholfuelseparationeconomy

        查看
      • Impact of Improving Design Factor over 0.72 on the Safety and Reliability of Gas Pipelines and Feasi

        Many years experience of the operation of high stress (>72% specified minimum yield strength,SMYS) gas pipelines and statistical analysis results of pipeline incidents showed that the operating pipelines at stress levels over 72% SMYS have not presented problems in USA and Canada,and design factor does not control incidents or the safety of pipelines.Enhancing pipeline safety management level is most important for decreasing incident rate.The application history of higher design factors in the U.S and Canada was reviewed.And the effect of higher factors to the critical flaw size,puncture resistance,change of reliability with time,risk level and the arrest toughness requirements of pipeline were analyzed hem.The comparison of pipeline failure rates and risk levels between two design factors (0.72 and 0.8) has shown that a change in design factor from 0.72 to 0.8 would bring little effect on failure rates and risk levels.On the basis of the analysis result,the application feasibility of design factor of 0.8 in China was discussed and the related suggestions were proposed.When an operator wishes to apply design factor 0.8 to gas pipeline,the following process is recommended:stress level of line pipe hydro test should be up to 100% SMYS,reliability and risk assessment at the design feasibility or conceptual stage should be conducted,Charpy impact energy should meet the need of pipeline crack arrest; and establish and execute risk based integrity management plan.The technology of pipeline steel metallurgy,line pipe fabrication and pipeline construction,and line pipe quality control level in China achieved tremendous progresses,and line pipe product standards and property indexes have come up to international advanced level.Furthermore,pipeline safety management has improved greatly in China.Consequently,the research for the feasibility of application of design factor of 0.8 in China has fundamental basis....

        2020-09-15 12:28:59瀏覽:28 gaspipelinehigherdesignfactorsafetyandreliabilityriskintegrity

        查看

      能化大數據平臺 ©2010-2022 All Rights Reserved.  
      滬ICP備14007155號-3 網站地圖 化工熱詞舊版本
      關于我們| 會員說明| 廣告合作| 聯系我們| 免責聲明| 投稿須知|

      能源化工大數據平臺-煤化工網二維碼
      在線客服
      服務郵箱

      服務郵箱

      cnmhg168@163.com

      微信咨詢
      微信
      返回頂部
      X我的網站名稱

      截屏,微信識別二維碼

      微信號:anquanhun

      (點擊微信號復制,添加好友)

        打開微信

      微信號已復制,請打開微信添加咨詢詳情!
      [!--page.stats--] 被公玩弄的年轻人妻

      <small id="mxhh4"><thead id="mxhh4"></thead></small><tt id="mxhh4"><menu id="mxhh4"></menu></tt>
        1. <blockquote id="mxhh4"></blockquote>
        2. <blockquote id="mxhh4"></blockquote>