Qualitative reports of problems in cohabiting relationships: Comparisons to married and dating relationships.

Although previous research has demonstrated increased relationship distress and separation for cohabiting couples, little is known about specific problems cohabiting individuals encounter in comparison to dating and married individuals. This study examines open-ended reports of 1,252 individuals' (220 dating, 231 cohabiting, and 801 married) relationship concerns using a detailed, reliable coding system. The top 5 areas considered most problematic by cohabiting individuals were problems in specific areas of their current relationship, individual problems, general communication, arguments, and emotional affection–distance. Dating and cohabiting individuals reported similar frequencies of global problems except that cohabiting individuals reported more problems with arguments and fewer problems with relationship commitment. Married and cohabiting individuals had more differences in their reports of relationship concerns; results suggested that cohabiting relationships tended to be both more vibrant and more volatile than marital relationships. However, most differences between relationship types were no longer significant after controlling for individuals' relationship and demographic characteristics. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

释光探源

释光技术用于年龄测定的依据是磷光体能够储存辐射的能量,但磷光体对不同辐射种类的能量吸收效率和释光响应各不相同,因此释光测定年龄这一技术本身要求各种学科知识的支撑,有些知识甚至是本学科都尚未深入研究的。作者简述了释光测年技术的历史,并以自身的实践阐述在对释光的认识过程中所必须具备的知识。还以长石为例,叙述了在自行开发的BG2003释光谱仪上新进行的研究工作。     

祁连—秦岭造山带交接部位25亿年 碎屑锆石的发现及其地质意义

对来自祁连与秦岭造山带交接部位秦安地区葫芦河流域的“葫芦河群”浅变质砂岩中大量碎屑锆石的 LA-ICP-MSU-Pb测年结果发现,其中含有年龄为2302～2578Ma的锆石颗粒。这些锆石年龄均十分谐和,且 阴极发光图象上显示具有典型岩浆型振荡环带结构和岩浆成因锆石的w(Th)/w(U)为0.11～1.42,表明这些 锆石为新太古代末期构造岩浆作用的产物。这些锆石是该区域迄今发现的最古老的锆石,表明祁连与秦岭造山 带交接部位可能存在比陇山岩群和秦岭岩群更古老的陆壳。     

成藏年代学研究现状

成藏年代学 是当代石油地质学的一个前沿领域,现已形成油藏地球化学、包裹体测温法、同位素测年法、有机岩石学方法、饱和压力-露点压力法、油气水界面追溯法等多种研究方法或技术。以塔里木盆地为例,分析了这些方法在油气成藏年代学研究中的应用问题,认为现有的成藏年代学研究方法特别是流体包裹体和自生伊利石K-Ar同位素测年等新方法和新技术尽管在成藏年代学研究方面具有很好的应用前景,但对于油气藏形成较复杂的叠合盆地的成藏年代和成藏史研究而言,尚需采用多种方法综合研究。     

Emotional convergence between people over time.

The authors propose that people in relationships become emotionally similar over time--as this similarity would help coordinate the thoughts and behaviors of the relationship partners, increase their mutual understanding, and foster their social cohesion. Using laboratory procedures to induce and assess emotional response, the authors found that dating partners (Study 1) and college roommates (Studies 2 and 3) became more similar in their emotional responses over the course of a year. Further, relationship partners with less power made more of the change necessary for convergence to occur. Consistent with the proposed benefits of emotional similarity, relationships whose partners were more emotionally similar were more cohesive and less likely to dissolve. Discussion focuses on implications of emotional convergence and on potential mechanisms. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

低本底~(14)C年龄测定的自动数据获取和处理

本文介绍的低本底~(14)C年龄测定的自动数据获取与处理装置能直接给出样品,~(14)C年龄、年龄的标准偏差。实现了测量、数据处理和换样全自动化。     

电子自旋共振年代学的新进展

本文着重介绍电子自族共振(ESR)年代学方面近两年来有关的国际会议概况和研究进展。     

测量磁单极子通量的天然白云母的裂变径迹年龄测定

当自然界中的磁单极子穿过地壳时,磁单极子—原子核结合体在云母中形成径迹。选用新疆白云母作为探测器,测得云母的裂变径迹年龄为(129±8)×10~6a,可以认为白云母的裂变径迹年龄即为它记录磁单极子—原子核结合体径迹年龄的近似值。     

一种实验室热释光断代装置

本文介绍了一套应用国内外仪器组合起来的热释光断代装置。该装置灵敏度高、本底低、稳定性好。用微机自动获取和处理数据,速度快,结果准确。     

牙化石ESR测年信号特性的研究

用电子自旋共振方法考察了动物牙化石样品测年信号的来源和性质。通过与纯物质的比较和使用正电子湮没技术进行的研究表明牙化石珐琅样品顺磁中心是由ＰＯ４＾３－离子产生的Ｆ中心所形成。