搜索结果: 1-15 共查到“知识库 SIMS”相关记录22条 . 查询时间(0.062 秒)
白云石广泛见于各类地质样品中，如碳酸盐岩、大理岩和热液脉等。值得注意的是，白云石也是地幔来源的金伯利岩和碳酸岩等高温岩石的常见矿物，这些幔源岩石携带了深部地幔的信息、且常伴生具有重要经济价值的矿产资源（如金刚石矿、稀土矿等）。据研究，以我国的白云鄂博、美国的Mountain Pass、澳大利亚的Mount Weld等为代表的大多数具有经济价值的稀土矿床与火成碳酸岩关系密切。因此，白云石的氧同位素可...
中条山地区绛县群和中条群沉积时限：夹层斜长角闪 岩SIMS锆石Ｕ-Ｐb年代学证据
中条山 绛县群 中条群 斜长角闪岩
2015/6/17
中条山地区出露大量早前寒武纪岩石，是认识华北克拉通晚太古代至早元古代大地构造演化的关键地区。绛县
群变质陆缘碎屑火山岩及中条群变质陆缘碎屑碳酸盐岩建造是该区最主要的地层单元，同时也是一系列铜矿床的赋矿围
岩。目前，对于二者的形成时代仍缺乏直接证据。本文通过高精度的二次离子质谱锆石 ＵＰｂ定年，厘定了绛县群和中条群
中的斜长角闪岩夹层分别形成于 ～２１８９Ｍａ和 ～２０８６Ｍａ。结合已有...
New graduate nurse transition into practice : psychometric testing of Sims Factor H Assessment Scale
New Graduate Nurse Transition into Practice
2015/1/19
Factor H is a newly identified phenomenon which describes a constellation of attributes of the new graduate nurse reflecting personality traits, intellectual abilities, and clinical judgment. In a pre...
Cladosporium: Causal agent of scab in purple passion fruit or gulupa (Passiflora edulis Sims.)
Pathogenicity Passiflora Incubation Latency
2013/2/28
The Scab of purple passion fruit or gulupa (Passiflora edulis Sims.) is a serious disease, affecting all aerial organs of the plant, but also to reducing the visual quality of the fruits, which reduce...
白干湖矿田东北部出露钾长花岗岩和二长花岗岩, 具有相近的成岩年龄和相似的地球化学特征, 表明为同源演化的复式岩体。利用SIMS方法获得二者锆石U-Pb谐和年龄是422±3 Ma和421±3.7 Ma, 为晚志留世。岩石主量元素地球化学特征二者表现为弱过铝质(A/CNK为0.99~1.02)或准铝质(A/CNK为0.92~0.94)、高钾(K2O/Na2O分别为1.08~1.31和1.03~1.22...
ToF-SIMS Investigations on Dental Implant Materials and Adsorbed Protein Films
Group for Interfaces Nano Materials Biophysics
2011/9/15
Biofilms play an important role in the health sector, in bioanalytics, in the food industry and in engineering science because the adsorption of organic molecules can alter the physical, biological a...
Ratio Estimation in SIMS Analysis
secondary ion mass spectrometry, ratio, isotope measurement, statistics,bias
2011/9/9
The determination of an isotope ratio by secondary ion mass spectrometry (SIMS) traditionally involves averaging a number of ratios collected over the course of a measurement. We show that this method...
麦兹火山-沉积盆地康布铁堡组的年龄及其东界,以及阿尔泰南缘早泥盆世火山活动往东往北延伸的范围仍然没有确定; 康布铁堡组火山岩的源岩及其形成的构造环境还有待阐明。近年来在麦兹盆地东侧发现了萨吾斯铅锌矿床,矿床赋存于康布铁堡组火山岩,与别斯萨拉玢岩体密切有关。本研究对萨吾斯铅锌矿床的康布铁堡组流纹岩和别斯萨拉玢岩进行了SIMS锆石U-Pb定年以及主微量元素组成测定,以期回答上述问题。流纹岩锆石的18个...
BF2+注入多晶硅栅的SIMS分析
二氟化硼 硅栅 离子注入
2009/9/1
文本采用SIMS技术,分析了BF2+注入多晶硅栅退火前后F原子在多晶硅和SiO2中的迁移特性。结果表明,80keV,2×1015和5×1015cm-2 BF2+注入多晶硅栅经过900℃,30min退火后,部分F原子已扩散到SiO2中。F在多晶硅和SiO2中的迁移行为呈现不规则的特性,这归因于损伤缺陷和键缺陷对F原子的富集作用。
乙硫醇与金作用的TOF-SIMS研究
乙硫醇 金 TOF-SIMS
2009/4/7
Using the Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS), the interface interaction between ethyl mercaptan and gold is observed. A series of gold-sulfur cluster ions are shown on the mass ...
The Chemical Analysis of Wood Using ToF-SIMS
ToF-SIMS lignin extractives surface analysis cell wall
2009/3/6
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is a powerful technique that provides chemical information about the surface of a solid sample and does not need any pretreatments. The signi...
The Structure of Thin Films of Polyaniline/Polystyrene Polymer Blends Studied by SIMS
Thin Films Polyaniline/Polystyrene
2009/2/10
The Structure of Thin Films of Polyaniline/Polystyrene Polymer Blends Studied by SIMS.
基于SIMS/GPS的汽车运动状态组合测量系统
汽车 位置姿态 SIMS/GPS组合测量
2009/1/16
建立了汽车基本坐标系并推导捷联惯性位置姿态测量基本算法，从工程易实现角度给出了中低精度SIMS和载波相位模式差分GPS在位置/速度/航向角间接反馈松散组合模式下的误差状态方程和量测方程，基于改进自适应Kalman滤波器对测量模型进行了仿真，并对组建系统进行了实车试验验证。分析表明，仿真结果和实车试验结果一致性好，测量模型满足实际汽车主动安全性试验要求。