The miniaturization of spectrometer opens a new application area with real-time and on-site measurements.The Fourier transform spectrometer(FTS)is much attractive considering its particular advantages among the approa...The miniaturization of spectrometer opens a new application area with real-time and on-site measurements.The Fourier transform spectrometer(FTS)is much attractive considering its particular advantages among the approaches.This paper reviews the current status of micro FTS in worldwide and describes its developments;In addition,analyzed are the key problems in designing and fabricating FTS to be settled during the miniaturization.Finally,a novel model of micro FTS with no moving parts is proposed and analyzed,which may provide new concepts for the design of spectrometers.展开更多
Spectrometer is an essential and necessary optical element used for measuring the chemical components and content of the matter. The development of miniature spectrometers can be traced back to 1980s. The development ...Spectrometer is an essential and necessary optical element used for measuring the chemical components and content of the matter. The development of miniature spectrometers can be traced back to 1980s. The development state and different manufacturing methods of micro-spectrometers are presented. Finally, we analyze the miniaturization trend of spectrometers. Some groundwork for the scientific research is offered by introducing micro-spectrometers development.展开更多
以壳聚糖(chitosan,CTS)和乳清分离蛋白(whey protein isolate,WPI)为成膜基质,制备壳聚糖-乳清分离蛋白复合膜(chitosan/whey protein isolate composite fi lm,CWF),并分析CWF的理化性质。通过测定CWF的拉伸强度、断裂延伸率、水蒸气...以壳聚糖(chitosan,CTS)和乳清分离蛋白(whey protein isolate,WPI)为成膜基质,制备壳聚糖-乳清分离蛋白复合膜(chitosan/whey protein isolate composite fi lm,CWF),并分析CWF的理化性质。通过测定CWF的拉伸强度、断裂延伸率、水蒸气透过率、透明度,优化CWF的成膜条件为CTS脱乙酰度90%、分子质量300 kD,成膜液pH 3,甘油添加量1.5%,WPI添加量0.5%。CWF的机械性能和剥离性比CTS膜显著改善,WVP和透明度有良好的改善。扫描电镜分析显示CWF的横截面更规则、均匀,且外观为均匀半透明膜。傅里叶红外光谱扫描结果显示CTS、WPI制备CWF时在其分子之间形成了强烈的相互作用,二者有良好的相容性。展开更多
检测微生物采油(MEOR)过程采出液中的有机物组成特征是研究微生物采油机理的重要方法。针对MEOR采出液中有机物组成复杂,生物表面活性剂组成分析困难的特点,采用傅里叶变换离子回旋共振质谱仪(FT-ICR-MS)对新疆六中区微生物驱油过程中3...检测微生物采油(MEOR)过程采出液中的有机物组成特征是研究微生物采油机理的重要方法。针对MEOR采出液中有机物组成复杂,生物表面活性剂组成分析困难的特点,采用傅里叶变换离子回旋共振质谱仪(FT-ICR-MS)对新疆六中区微生物驱油过程中3口采油井不同时期采出液中的含氧极性化合物组成进行研究。检测到样品中含氧极性化合物含量最高的为O2、O3、O4、O7、O9类化合物,在微生物驱替过程中,样品中的O7和O9类化合物含量升高,检测到的鼠李糖脂有C 16 H 30 O 7、C 18 H 34 O 7、C 14 H 26 O 7、C 18 H 30 O 7、C 14 H 26 O 7、C 24 H 44 O 9,主要为O7和O9类的单鼠李糖脂。结果表明研究区块微生物驱油过程中激活的内源微生物能够在地层环境中代谢产生鼠李糖脂,随着微生物驱油的进行,鼠李糖脂的种类变多。展开更多
基金National Natural Science Fundation of China(60578036)
文摘The miniaturization of spectrometer opens a new application area with real-time and on-site measurements.The Fourier transform spectrometer(FTS)is much attractive considering its particular advantages among the approaches.This paper reviews the current status of micro FTS in worldwide and describes its developments;In addition,analyzed are the key problems in designing and fabricating FTS to be settled during the miniaturization.Finally,a novel model of micro FTS with no moving parts is proposed and analyzed,which may provide new concepts for the design of spectrometers.
文摘Spectrometer is an essential and necessary optical element used for measuring the chemical components and content of the matter. The development of miniature spectrometers can be traced back to 1980s. The development state and different manufacturing methods of micro-spectrometers are presented. Finally, we analyze the miniaturization trend of spectrometers. Some groundwork for the scientific research is offered by introducing micro-spectrometers development.
文摘以壳聚糖(chitosan,CTS)和乳清分离蛋白(whey protein isolate,WPI)为成膜基质,制备壳聚糖-乳清分离蛋白复合膜(chitosan/whey protein isolate composite fi lm,CWF),并分析CWF的理化性质。通过测定CWF的拉伸强度、断裂延伸率、水蒸气透过率、透明度,优化CWF的成膜条件为CTS脱乙酰度90%、分子质量300 kD,成膜液pH 3,甘油添加量1.5%,WPI添加量0.5%。CWF的机械性能和剥离性比CTS膜显著改善,WVP和透明度有良好的改善。扫描电镜分析显示CWF的横截面更规则、均匀,且外观为均匀半透明膜。傅里叶红外光谱扫描结果显示CTS、WPI制备CWF时在其分子之间形成了强烈的相互作用,二者有良好的相容性。
文摘检测微生物采油(MEOR)过程采出液中的有机物组成特征是研究微生物采油机理的重要方法。针对MEOR采出液中有机物组成复杂,生物表面活性剂组成分析困难的特点,采用傅里叶变换离子回旋共振质谱仪(FT-ICR-MS)对新疆六中区微生物驱油过程中3口采油井不同时期采出液中的含氧极性化合物组成进行研究。检测到样品中含氧极性化合物含量最高的为O2、O3、O4、O7、O9类化合物,在微生物驱替过程中,样品中的O7和O9类化合物含量升高,检测到的鼠李糖脂有C 16 H 30 O 7、C 18 H 34 O 7、C 14 H 26 O 7、C 18 H 30 O 7、C 14 H 26 O 7、C 24 H 44 O 9,主要为O7和O9类的单鼠李糖脂。结果表明研究区块微生物驱油过程中激活的内源微生物能够在地层环境中代谢产生鼠李糖脂,随着微生物驱油的进行,鼠李糖脂的种类变多。
