...生命科学-科研基金网 关键词：相位问题；蛋白质直接法；分子置换；蛋白质折叠；二级结构预测 [gap=2069]Keywords：phase problem; direct methods in protein crystallography; molecular replacement; protein fold..
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After solving the "phase problem" by electron crystallography,intensity extracted from 2-D SAXS pattern has been attempted to achieve averageelectron density map for a bimodal mesoporous carbon, showing the general structuraland formation mechanism difference to CMK-5 materials.
在应用电子结晶学解决“相位问题”之后，我们另外通过拟合小角X射线散射图提取衍射峰强度的办法，来获取电子密度分布图。 由此分析了一类双级介孔碳材料和CMK-5结构上的差别，以及讨论其合成机理的不同。
参考来源 - 有序多孔材料的控制合成及其结构解析·2,447,543篇论文数据，部分数据来源于NoteExpress
但电压模型中的纯积分环节存在直流偏置和初始相位问题。
But the pure integrator of the voltage model has some disadvantages like DC bias and initial phase problems.
由单强度测量来恢复相位问题，也有过讨论，可以利用解析函数特有性质或应用取样定理来实现相位恢复。
The phase retrieval problem from single intensity measurement was also discussed in terms of the properties of analytical function or under consideration of sampling theorem.
边合成边测序的高通量基因测序技术存在一个相位问题，即碱基合成的先后顺序会出现“超前”和“延迟”。
The high-throughput genome sequencing has a phase problem, i. e. "exceeding" or "delaying", which appears in the order of bases synthesizing.
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