铀的光度分析进展

对20世纪90年代以来的光度法测定铀进行了综述。内容涉及常规光度法，催化动力学光度法，流动注射光度法，化学发光法和荧光光度法。参考文献82篇。     

镧的光度分析进展

综述了近10多年来镧的常规光度法、紫外光度法、催化动力学光度法和化学发光法研究状况.参考文献35篇.     

碲的光度分析进展

文章综述了碲的光度分析进展。参考文献２２篇。     

铬光度分析的进展

综述了近年来 ( 1996～ 2 0 0 1)国内铬光度分析的进展 ,包括分光光度法、动力学光度法及流动注射光度法测定铬 ,引文 5 0篇。     

锇的光度分析进展

本文综述了测定锇的常规光度法、催化动力学光度法、化学发光法、紫外光度法和流动注射光度法等分析方法的进展。     

我国铜光度分析的进展

按普通光度法、双波长光度法、三波长光度法、萃取光度法、浮选光度法、动力学光度法、流动注射光度法、计算光度法、荧光光度法综述了近年来 (1998～ 2 0 0 1)我国铜光度分析的进展 ,引文 14 7篇。     

近年来铬光度分析的某些进展

综述了近年来(2002—2004年)国内铬的光度法研究进展,重点介绍了铬的吸光光度法、动力学光度法、流动注射光度法及共振光散射光度法的某些进展。引用文献46篇。     

钇的光度分析进展

对钇的光度分析方法,包括常规光度法、化学发光法、流动注射力学法和荧光光度法等近些年的进展进行了综述,参考文献52篇。     

锶的光度分析进展

系统地综述了锶的光度分析进展，文献３１条。     

锌光度分析的进展

综述了近年来锌的吸光光度法，导数光度法，荧光光度法，流动洲央求我度法以及计算数学光度法等光度分析方法的进展及其在锌测定中的应用。     

光度法测定铈的研究进展

综述了近10多年来常规光度法、催化动力学光度法、化学光度法、紫外光度法、流动注射光度法和荧光光度法测定铈的研究结果.指出在常规光度法中,碱性染料类二安替比林甲烷类显色剂灵敏度最高,但受高价离子干扰严重;化学发光光度法、流动注射光度法和催化动力学光度法测定铈的应用较少,应加强研究.     

铽的光度分析进展

综合介绍了近10a来测定铽的荧光法的研究状况，指出应加强其它铽的分析方法的研究及新荧光试剂的合成研究。     

微量钐对银铜基合金再结晶的影响

研究了在银铜基合金中添加轻稀土元素钐对合金再结晶温度、再结晶激活能及再结晶速度的影响，并与添加重稀土元素钆的情况进行了比较。结果表明：在Ａｇ－Ｃｕ合金中添加０．２ｗｔ％Ｓｍ后，其再结晶温度比含铜量相同的Ａｇ－Ｃｕ和Ａｇ－Ｃｕ－０．２Ｇｄ合金均有大幅度提高；再结晶激活能高于相应的Ａｇ－Ｃｕ合金，但比Ａｇ－Ｃｕ－０．２Ｇｄ合金低；再结晶速度快于Ａｇ－Ｃｕ－０．２Ｇｄ合金且与Ａｇ－Ｃｕ合金相近。     

铌的光度分析试剂及其在光度分析中的应用

铌的分析测定对于航天、电子、通讯、能源等行业的发展都具有重大意义。近年来各种新试剂、新方法的不断涌现，使铌的光度分析有了新的进展。通过对铌的光度分析试剂予以综述，重点介绍了各类显色剂及其显色反应体系、相应光度分析方法的最大吸收波长、摩尔吸光系数、检测限、干扰情况及其应用。     

Effects of Samarium on Liver and Kidney of Rats

Spraque-Dawley(SD)big rats with weaning weight of (195±15) g were randomly divided into 4 groups with 8 males and 8 females each group. One group drank de-ionized water served as control and also used for analysis with the background. The other three groups were cultured for five months by drinking de-ionized water with 3.0, 4.5 and 6.0 mg·L-1 Sm (NO3)3, respectively. Compared with the rats in control, it is found that the organs of the treated rats are apparently pathologically changed, such as liver swell, lung intumescence, peritoneum conglutination and hardness. Especially, in the high Sm group, the pathological percentage in liver and lung is up to 30%. The pathological changes in liver and lung show that rare earth Sm does hazard biological effects to animals. With increasing Sm concentration, the weight rate of organ/body has a tendency of increasing; the activity of superoxide dismutase (SOD) in liver and kidney decreases, but the maglonydiadehyde (MDA) concentration increases, indicating the abilities of anti-oxidation and the lipid per-oxidation inhibition degenerate, which leads to hard pathological changes in organs. Moreover, the relative weight rate of organ/body, the activity of SOD and the MDA concentration are remarkably lager in liver than in kidney and other organs, suggesting that the biological effect of Sm on liver is the greatest and Sm has a high affinity for liver.     

Influence of Samarium on Learning and Memory Function of Rats

Sixty-four Spraque-Dawley(SD)big rats with weaning weight of (195±15) g were randomly divided into 4 groups with 8 males and 8 females each group. One group drunk with de-ionized water served as control and was also used for analysis of the background. The other three groups rats were raised by de-ionized water containing low, middle and high concentrations of Sm for four months, then learning and memory tests were carried out in Y-electric maze. Compared with the control rats, the learning and memory of rats in low and middle groups shows a deterioration trend, exhibiting the function degradation of rats' brain. It may results from the rare earth elements through blood-brain barrier affecting the normal physiological functions of rats' brain. In addition, the activity of superoxide dismutase (SOD) in rats' brain decreases, while the content of malondialdehyde (MDA) concentration increases. The decreased SOD activity and the increased MDA mean the degeneration the ability of anti-oxidation in rats' brain, which are accordance with the degradation of learning and memory function of rats in low and middle Sm groups.     

镧热还原氧化钐过程冶金动力学分析

讨论了镧热还原氧化钐过程的动力学环节,分析了还原过程镧—钐合金存在的可能性,采用反证法确定了制备金属钐温度下的动力学控速环节。依据确定的控速环节,很好地解释了相关文献工艺条件实验的结果。     

Luminescent Properties of Samarium Ion in Calcium Molybdate

Trivalent samarium ion (Sm^3 ) activated calcium molybdate (CaMoO4) phosphor was prepared by solid-state reaction in air. The XRD pattern of the powder CaMoO4: Sm shows that the CaMoO4: Sm single phase is developed fully through our preparation procedure. The excitation spectrum of CaMoO4: Sm is composed of a broad absorption of host and some sharp lines of the f-f transition absorption of Sm^3 . Illustrated in photoluminescence spectrum, CaMoO4 doped with Sm^3 displays orange red emission that is ascribed to the inner 4f^5 electron transitions ^6H7/2(orange)and ^6H9/2(red)of Sm^3 . Different from the sites of Sm^3 in CdWO4, the Sm^3 ions substitute for the Ca^2 and form only one type emission center in the CaMoO4 crystal lattice.