原子外层空轨道相对最稳定顺序及周期性规则

本文提出原子外层空轨道相对稳定性可作为电子填充的粗略判据;给出由中性原子轨道能数据直接导出原子外层轨道相对最稳定顺序的图表及周期性规则;用以简明、清晰、合理地推引解释元素基组态和解释元素周期律。提出在中心势场模型基础上推引全部元素基组态的方法。     

Effect of feeding cereal-legume diets to rats on in vitro absorption of45Ca

Summary The in vitro absorption of calcium from the duodenum was significantly less in a group of rats fed on a wheat diet than in a group fed a wheat and Bengal gram (7030) diet.     

紫苏微量元素的测定

利用火焰原子吸收涨研究了紫苏根、茎、叶中８种微量元素的含量,并通过实验拟定了各待测元素的最佳分析条件,呼元素的回收率在９６－１０５％之间,相对偏差小于６％,方法快速、准确、实用性强、同时,对紫苏的药理作用进行了探讨,为办的开发提供实验依据。     

电化学原子层外延及Te,CD元素欠电势沉积研究

阐述了一种处延沉积化合物半导体的新方法－电化学原子层外延（ＥＣＡＬＥ）并对其基础欠电势沉积（ＵＰＤ）进行了讨论,着重研究了Ⅱ,Ⅳ族元素Ｃｄ,Ｔｅ的电化学欠电势沉积,根据电化学循环伏安曲线,研究了Ｔｅ和Ｃｄ在Ｓｉ－Ａｕ（１１１）基片上以及交替生长过程中ＵＰＤ沉积电位及相应覆盖度值,由此确定了在Ｓｉ－Ａｕ（１１１）衬底上交替沉积Ｔｅ,Ｃｄ原子层的方法,在此基础上,初步进行了多次交替沉积,并用ＡＦＭ与Ａ     

C60溶液,孤立分子及薄膜形态电子态结构分析

系统地给出了Ｃ６０在固态薄膜及不同有机溶液形态下的常规吸收光谱和三同商吸收光谱,确定了各相关光学跃迁能量,并通过对可见区电子－－振动光谱结构的指认分析,给出了有机溶液形态下Ｃ６０的能隙,基于Ｍａｘｗｅｌｌ－Ｇａｒｎｅｔｔ有效介质模型理论,由不同有机溶剂形态下Ｃ６０电子态能级结构参数外推获得了Ｃ６０孤立分子的本征电子态能级结构参数,从而为详细了解和研究Ｃ６０分子不同形态下电子态结构的变化提供了较完整     

High-precision timing of the Quaternary standard samples with thermal ionization mass spectrometry (TIMS) U-series method

Two national stalagmite standard (GBW04412, GBW04413) and one international coral standard (RKM_4) have been determined by using thermal ionization mass spectrometry (TIMS) method. The values of ( 234 U/ 238 U) act , ( 230 Th/ 234 U) act and age are all consistent in error range with the standard values obtained by using α spectrometry.     

Osmium isotope determination on mantle-derived peridotite xenoliths from Panshishan with N-TIMS

The¹⁸⁷Os/¹⁸⁸Os ratios of spinel lherzolite xenoliths from Panshishan determined with N-TIMS are lower than that of the primitive mantle, which shows depleted mantle characteristics. Their positive correlation with Al₂O₃/MgO suggests that the geochemical behavior of trace elements Re and Os is similar to that of Al₂O₃ and MgO respectively during the magmatic evolution and Re-Os isotopic system is largely immune to mantle metasomatism. A model age of 2.8–3.4 Ga obtained by¹⁸⁷Os/¹⁸⁸Os-Al₂O₃/ MgO correlation might represent the homogeneous age of the mantle lithosphere beneath the area.     

Preparation and optical properties of solid solution semiconductor (Zn x Cd1−x S) doped silica glasses

Semiconductor(Zn_xCd_1−x S) doped silica glasses were prepared by Sol-Gel process andin situ growth technique. The structure of the materials was characterized by X-ray diffraction technique, the particle size of semiconductor crystallites from X-ray patterns was estimated less than 10 nm. From absorption spectra, it is obtained that the absorption edges shifted to short wavelength direction when Zn contents increased, and the absorption edge can be adjusted from 2.46 eV to 2.96 eV by controlling Zn contents. The third-order nonlinear optical susceptibility was studied at 532 nm with 8 ns pulse laser by degenerate four wave mixing (DFWM) technique.     

玻璃池窑的计算机辅助设计 I.燃油蓄热室流液洞马蹄焰玻璃池窑

用理论和实践经验相结合的方法,采用ＢｏｒｌａｄｎＣ＋＋语言设计了一个燃油蓄热室流液洞马蹄焰玻璃池窑,用ＡｕｔｏＣＡＤ１２．０版软件包绘制了三张窑炉图（平面图、横剖面图、纵剖面图）。     

化学活性表面的分形研究

利用近十年来兴起的分形几何学,对固体表面进行了研究,指出固体表面的粗糙程度及不规则性可以用分形维数给予很好的定量描述,并给出了测定化学活性固体表面分形维数的方法。