We study the relations between the quaternion H-type group and the boundary of the unit ball on the two-dimensional quat......

The paper introduces the steps and methods of multi-approach,multi-level exploration of buried faults in thick Quaternar......

The environmental and biogeochemical information extracted from the sediments col- lected from the northern shelf of the......

The uplift of the Tibet Plateau resulted in large-scale Gobi and deserts in Northwest China,in which the fine particles ......

A new lathyrane diterpene glycoside,named 3β,7β,15β-trihydroxy-14-oxolathyra-5E,12E-dienyl-16-O-β-D-glucopyranoside,......

In north region of Mud city, southeast of Birjand-central east of Iran, in the position of 59/37 east longitude and 32/5......

[Objective] To study the effects of combined application of different elements on alfalfa hay yield.[Method] Potassium s......

长江三角洲北翼地区缺少较长尺度的第四纪海陆变迁及环境演变的深入探讨，深达423rn的海安县基岩标J9孔为此提供了较好的研究对象。......

用＾１５Ｎ示踪法研究了黄筋泥棉田花铃肥的５种施用技术，两年试验结果表明，以＾１５Ｎ＋饼肥＾１５Ｎ＋盖草两个处理表现较好。干旱期间耕层土壤含水量比对照增加６．８个......

通过红外光谱、饱和容量法和斜率法等方法研究季铵盐萃取硫脲的机理.结果表明,硫脲以中性分子形式被季铵盐萃取,萃取机理为中性缔......

针对三轴视觉跟踪姿态角稳定精度不高的问题，采用基于四元数的卡尔曼滤波器算法把三轴陀螺、加速度计、磁极三个不相干的三维矢量进......

用乙基氯化物（Ｏ，Ｏ－二乙基硫代磷酰氯）与不同的胺反应，以碳酸钾作缚酸剂、季铵盐作相转移催化剂，合成了六种Ｎ－取代硫代磷酰胺二乙酯，其结构经ＩＲ、......

针对传统的降维四元数旋转不变子空间算法(Dimension Reduction Quaternion Estimation of Signal Parameters via Rotational Inv......

以烯丙基缩水甘油醚(AGE)为乳胶聚合单体,制备了一种乳胶附聚型阴离子交换固定相。通过无皂化乳液聚合法,以AGE和苯乙烯(ST)为共聚......

建立了复方季铵盐戊二醛溶液中季铵盐分离鉴别方法,即以[氯仿-水（20∶1.5）的下层溶液]-甲醇（10∶3）为展开剂、浓氨试液为预平衡剂,采用......

针对新型水下检测以及作业机器人在导航精度、体积方面的要求,设计了一套基于微机电器件的组合导航系统.系统为抑制陀螺漂移而采用......

This paper aims to present, in a unified manner, algebraic techniques for linear equations which are valid on both the a......

通过大量的植物孢粉、Ｃ＾１４、水土样等品的取样测试，分析了黄河断陷盆地的形成与发展。重点研究了达拉特旗平原区主要供水目的层－第四纪地......