电热原子吸收中涂层石墨管、基体改进剂及酸对锗吸光度的影响

本文对电热原子吸收测定锗时石墨管的种类、基体改进剂及酸的影响进行了试验,确定了满足微量锗测试的条件,但该方法对分析条件要求苛刻,条件稍有改变即导致较大的偏差,为现有文献中锗分析数据有较大差异提供了一个解释依据。     

原子外层空轨道相对最稳定顺序周期性规则应用

本文介绍了原子外层空轨道相对最稳定顺序周期性规则和大周期概念与元素周期系的本质联系;元素周期律(特别是第二周期性)的解释;周期系各部分的相互联系和影响;未来元素的预测等.并对元素第二周期性原因、“镧系收缩后果”等问题作出新的解释.     

对慢电子散射模型的探讨

仅以我国原子分子碰撞理论研究领域里的慢电子散射模型的应用为例子．进行了归纳、总结、探讨，以说明他建立模型所取得的成就与意义．     

原子物理学中的哲学思想探析

原子物理学是经典理论和量子力学的桥梁和转折点。从人们认识原子到量子力学的建立,新的研究方法和丰富的哲学思想是留给人们的巨大科学财富,认真进行总结和分析对学习物理学特别是现代物理学,树立科学的辩证唯物主义世界观有很大帮助。     

Transition of Rituals in the Nagasaki City Atomic Bomb Memorial Ceremony

This article focuses on rituals in the wake of a disaster, particularly those rituals that concern the dead. Previous studies have paid little attention to such rituals, which have developed and evolved over a long period of time. A diachronic case study of the Nagasaki atomic bomb memorial ceremony shows that memorial rituals gradually shift their attention from the dead to the living. The characteristics observed in this ceremony that orient towards the living can be distinguished from folk rituals, whose central object is to appease or comfort the dead, and also from political rituals, whose aim is to honor the dead and acknowledge the tragic past within a political framework. In addition to economic as well as political factors, the broadcasting of the Nagasaki ceremony on television is instrumental in the changes in these rites and the inclusion of the third-person plural subject: the “we”, appears to be vital in apprehending the experience of violent death. Relying on historical materials, photographs, and data collected by participatory observation and interviews, this article aims to show how people use symbolic practices to make meaning out of violent death.     

Walking atomic vegas: ritual,memorial, and toxic landscapes

ABSTRACT

This article proposes the use of ritualized walking to mark and remember invisible threats and the ‘slow violence’ of contaminated landscapes undergoing gradual change. To exemplify the idea, the article describes our proposal for a Plutonium Memorial design, which would be a mnemonic device for marking the location of a proposed nuclear waste storage facility buried under the iconic Las Vegas Strip. Supported with evidence that ritual is commonly used to reinforce collective conscience and memory outside the sacred realm, the core of this memorial design would be regularized and ritualized pilgrimages from one of the most important and symbolic American landscapes, Las Vegas, through the equally prominent Grand Canyon to the less well-known uranium mines in Arizona (the source of nuclear power). Though hyperbolic, the Plutonium Memorial demonstrates how an active cultural-based memorial has potential to preserve narratives around contaminated landscapes. To expand beyond this radical example we schematically speculate on other scenarios that could incorporate more representative (less extreme) haptic rituals around memorials marking slowly unfolding environmental disasters. The intention is to provide new visions for durable memorials built around culture rather than structures, which are engaged with not only the past, but also the future.     

火焰原子吸收光谱法测定大枣中微量元素

用HNO3-HClO4分解样品,用火焰原子吸收光谱法测定大枣中Cu、Zn、Se、Pb4种微量元素含量。结果显示:大枣中微量元素含量较高,Cu、Se、Zn、Pb的含量分别为3.77、8.91、29.97、1.55mg/kg,大枣所具有的众多保健作用可能与其含有的微量元素有关。火焰原子吸收光谱法简单、精确,经标准加入回收实验,各元素回收率在94.00%～100.75%之间。     

用WDMI型光栅单色仪研究钠原子光谱

用WDMI型光栅单色仪直接观测钠原子光谱双线的波长,确定了主量子数n,轨道量子数l,推算出各谱线的归属,并从谱线的裂距经过理论推证,分别计算出精细结构常数α、普朗克常数h和自旋量子数s,这3个重要常数的实测值与公认的理论值比较有较高精度.     

Kerr介质中与双模光场作用的三能级原子的偶极压缩效应

研究了一位于高QKerr介质腔中与双模相干光场作用的Λ型三能级原子的偶极压缩效应，通过数值计算，讨论了Kerr效应和单光子失谐量对原子偶极压缩的影响。结果表明，随着Kerr效应的增强，原子偶极压缩程度减弱，以至消失，而压缩时间也越来越短。但随着单光子失谐量的增加，原子偶极压缩随之增加，其压缩时间延长。     

悬浮液进样-火焰原子吸收光谱法测定芦荟中钙、铁

用悬浮液技术处理芦荟样品,建立了悬浮液进样-火焰原子吸收光谱法快速测定芦荟中钙、铁的分析方法。分别 以La3+和盐酸作为钙、铁的释放剂。对琼脂溶液用量、化学干扰、试液与空白溶液特性的一致性、背景吸收干扰及检出 限进行了考察。测定结果的相对标准偏差小于3.2%,测定结果与灰化法一致,相对误差小于±0.9%,方法简便。