乌梁素海及其周边地区水源补给关系同位素研究

野外采集乌梁素海及其周边区域的水样和土壤样品,测定样品的δD、δ18 O和ρ（TDS）,并以采自南京燕子矶的黄土为样本进行室内降水入渗试验,测试每个土壤样品的含水率和ρ（TDS）。根据试验结果,对乌梁素海以北的色尔腾山地区的降水入渗情况进行分析,对乌梁素海湖水补给来源进行同位素分析,对乌梁素海湖泊周围地下水进行TDS分析。结果表明,乌梁素海以北的色尔腾山地区的大气降水在入渗的过程中大量蒸发,无法有效入渗补给地下水,降水并不是当地地下水的主要补给源,而比当地降水中的氘氧同位素值更负的稳定外部补给源是当地地下水的主要补给源;泉水、井水的δD和δ18 O值比当地降水明显贫化,也表明大气降水并非是地下水的补给源;地下水是乌梁素海的主要补给源,河套灌区排水渠中的水的主要来源是深循环地下水,狼山—日喀则隐伏断裂带中可能存在渗漏通道,西藏内流区的渗漏水通过该通道补给到了内蒙古高原。     

《污水排入城镇下水道水质标准》刍议

将《污水排人城镇下水道水质标准》（CJ343—2010）与国家及地方其他相关标准进行了比较,对CJ343—2010中的几个控制指标限值的合理性进行了分析,建议将总溶解性固体（TDS）、氯化物、硫酸盐3项指标列为推荐性指标,并阐述了相关理由;建议对CJ343--2010中总铜的排放限值进行修改,并对涉及标准交叉问题进行说明,以加强立法的协调和统一．     

TDS法在均质油藏早期试井中的应用

目前试并解释方法主要是图版拟合法,其在求取地层和井简参数时较为繁琐,且解释得到的结果具有多解性.对于低渗透油藏,由于储层物性较差,要获得质量很好的试井曲线难度较大.而且由于测试时间的限制,很多试井曲线都观察不到晚期径向流动阶段,而图版拟合法对于这种情形无法进行合理解释.介绍TDS法在均质无限大油藏的应用,TDS法对晚期径向流动阶段观察不到的情形进行了解释.     

Surface chemistry and catalysis studies on the palladium-boron system in the semihydrogenation of alkynes

A new, supported Pd-B/SiO₂ catalyst characterized by its high bond- and stereo-selectivity in semihydrogenation of -CC- triple bond is reported. To elucidate its mode of action a model system, Pd(111)-B, was exposed to H₂, C₂H₂ or C₂H₄ and then investigated by means of AES-LEED-TDS methods. We conclude that there is a geometric blockage of Pd active surface sites by boron adspecies, that their total number diminishes and that the distribution of particular surface ensembles changes.     

滦河入海口三角洲地区地下水及土壤盐度分析

为了解滦河入海口三角洲地区地下水盐度及土壤盐渍化情况,对该区域进行了地下取水、取土测试。共布置17个浅层地下水取样点、53个深层地下水取样点及20个土壤取样点,测试水样的TDS及土壤中水溶盐的易溶盐总量,K~+,Na~+,Ca~(2+),Mg~(2+),Cl~-,SO_4~(2-),HCO_3~-,CO_3~(2-)。研究结果表明:研究区范围内淡水区域占总研究区域的50%;深层地下水TDS差异较小,且均为淡水;盐渍土类型多为氯盐渍土和亚氯盐渍土;土壤易溶盐总量整体上在各个深度处由西北向东南逐渐增加,土壤盐度的影响因素是浅层地下水;土壤易溶盐含量在局部(位置)较低。研究结果可为地下水资源及土壤资源开发利用提供一定参考。     

TDS协议分析与漏洞检测

对应用于Microsoft SQL Server 2000的未公开协议TDS8．0进行研究分析,通过批量发送和接收TDS数据包,分析TDS协议的通信规则和各种类型的TDS包结构,总结整个TDS协议的报文结构。在协议分析的基础上,研究Microsoft SQL Server 2000体系结构和存在的安全漏洞,编写漏洞测试程序,验证TDS8.0协议并找出其中存在的安全问题。     

基质型经皮给药缓释贴片的体外释放研究

研究了基质中雌二醇 (E2 )的质量分数wE 对透皮贴片的释放影响。实验结果表明E2 的释放度在wE 为 1 5 %～ 3%是相近的 ,不受wE 的影响 ;wE 提高 1倍 ,累计释药量平均提高 80 %。动力学研究表明 ,前 12h内 ,释放度满足Higuchi公式 ,即与t1/2 成线性关系 ;12h后与t0 .7成线性关系 ,为非Fick扩散     

通过LAN控制TDS3032B实现脉冲参数测量

针对如何通过TDS3032B示波器的LAN接口,实现脉冲频率、脉冲宽度、脉冲延时测量问题,本文描述了利用VISA函数通过LAN接口,在LabVIEW8．5开发环境下,根据测量功能的不同,发送不同的程控命令码,实现脉冲参数测量程序设计方法,该方法节约了购买Tektronix TDS3GV模块的经费,充分开发利用了仪器本身资源,达到了通过GPIB接口控制示波器的同样效果,读者可以直接利用程序中的原代码,避免程序设计中繁琐调试过程。应用证明此方法简单实用,对程序设计者具有参考借鉴价值。     

Dutch consumers do not hesitate: Capturing implicit ‘no dominance’ durations using Hold-down Temporal Dominance methodologies for Sensations (TDS) and Emotions (TDE)

In the ‘classic’ Temporal Dominance (TD) method, panellists are instructed to select a dominant attribute, which remains dominant until another attribute is selected. This procedure does not allow recording ‘no dominance (ND)’. ND periods can occur because of indecisive selection behaviour due to hesitation or uncertainty about attribute selection and time needed to switch from one attribute to another. ND periods may create noise in TD data. ND can be recorded implicitly using a ‘Hold-down’ procedure, where panellists actively hold down the attribute button that is perceived dominant, but release it when no longer dominant. The ‘Hold-down’ procedure allows subjects to report indecisive behaviour simply by not holding down a button. This study compared the ‘classic’ and ‘Hold-down’ TD methodologies. One hundred and thirty-seven participants evaluated four dark chocolates in two sessions, one for sensory (TDS) and one for emotion (TDE) evaluations. Participants employed either classic (n = 68) or Hold-down (n = 69) TD following a between subjects design. Similar dominance rates and dynamic evolutions of attributes during consumption were observed for both methods. ND durations between attribute selections were shorter than 1 s during sensory and emotion evaluations. Such short ND durations unlikely reflect periods of true hesitation, but rather reflect the time needed to switch between dominant attributes. No evidence is found for Hold-down TD outperforming classic TD in terms of sensitivity and discrimination ability. In conclusion, irrespective of the conceptual likelihood regarding the occurrence of ‘no dominance’ periods, the present study failed to demonstrate moments of hesitation using the ‘Hold-down’ procedure.