二溴羟基苯基荧光酮光度法测定钢中锡

在 0.4～ 0.6mol/LH2 SO4 介质中 ,有乳化剂OP存在下 ,锡与二溴羟基苯基荧光酮形成稳定的 1∶3有色络合物 ,其极大吸收在 5 10～ 5 15nm波长处 ,摩尔吸光系数ε=1.2× 10 5,锡质量浓度在 0～ 0 .4μg/mL范围内符合比尔定律。钢铁材料中主要存在的铁、铜不影响本法的结果 ,只有钼、钛、钨有干扰 ,其中钼的影响可用盐酸羟胺将其还原成低价钼后消除 ,而钛、钨在碳钢、低合金钢中含量甚微可不予考虑 ,所拟方法成功地用于上述钢中钼的测定。     

二溴羟基苯基荧光酮分光光度法测定钛

在 0.0 12mol/L左右的邻苯二甲酸氢钾和硫酸介质中 ,钛与二溴羟基苯基荧光酮 (DBHPF)及溴化十六烷基吡啶 (CPB)生成 1∶2∶2的绿色络合物 ,其最大吸收波长在 6 2 0nm ,表观摩尔吸光系数ε =1.5 3×10 5,钛含量在 0～ 7 0 μg/2 5mL符合比尔定律 ,方法快速简便 ,适合于铬镍钢及铝合金中微量钛的测定     

钛-3,5-二溴水杨基荧光酮-表面活性剂显色体系的研究及应用

本文研究了钛 3 ,5-二溴水杨基荧光酮 (DBSF) 吐温 60三元络合物的显色反应条件及应用。结果表明 ,在 0.0 48～0.0 64mol/L盐酸介质中 ,形成了摩尔比为Ti ∶DBSF∶Tween 80 =1∶2∶4的三元络合物 ,最大吸收在 54 1nm波长处 ,表观摩尔吸光系数为 1.74× 1 0 5 ,钛含量在 0～ 1 1 μg/ 2 5mL遵守比尔定律 ,方法灵敏 ,选择性较高 ,操作简便 ,可不经分离直接测定钢铁样品中微量钛 ,结果满意。     

吐温80存在下钛与3,5-二溴水杨基荧光酮显色反应的研究及应用

研究了吐温 80存在下,钛与3,5-二溴水杨基荧光酮显色反应的条件。结果表明,在0.10mol/LH2SO4中,钛与显色剂形成稳定的1∶2橙红色胶束络合物,络合物稳定48h以上,λmax=539.2nm,ε539.2=2.76×105,钛含量在0～15μg/25mL范围符合比尔定律。方法快速,准确,选择性好,用于测定合金钢中微量钛,结果满意。     

二溴邻硝基偶氮胂分光光度法测定微量铂

研究了溴化十六烷基三甲铵(CTMAB)存在下,铂(Ⅱ)与3-[(2-胂酸苯基)偶氮]-6-[(4,6-二溴-2-硝基苯)偶氮]-4,5-二羟基-2,7-苯二磺酸(即二溴邻硝基偶氮胂)的显色反应,建立了一种测定微量铂的光度分析法。试验表明,在pH6.5的HAc-NaAc缓冲溶液中,铂与二溴邻硝基偶氮胂形成组成比1∶3的紫红色络合物,该络合物的最大吸收峰位于526nm,表观摩尔吸光系数ε=1.12×105L.mol-1.cm-1。在10mL显色溶液中,铂量在0.03～14μg范围内符合比尔定律。方法已用于铂催     

钛(Ⅳ)—偶氮氯膦mA—盐酸羟胺—OP—吐温80体系的研究

研究了题示的多元络合物的最佳形成条件,其显色后ε可达4×10~5以上,是迄今测定钛灵敏度最高的分光光度法。     

二安替比林甲烷分光光度法测定金属硅中钛

研究了硫酸驱除高氯酸和二安替比林甲烷-钛(Ⅳ)显色反应条件,建立了二安替比林甲烷分光光度法测定金属硅中钛含量的方法。实验表明,于1.6 mol/L盐酸介质中,二安替比林甲烷与钛(Ⅳ)形成1∶3黄色络合物;钛量在5.00~100.00μg/50 m L范围内符合比尔定律;钛的检出限按空白值3倍标准偏差计算得0.0047μg/m L;ε_(388)=1.48×10~4L/mol·cm;试液中其他共存离子不干扰测定。于5个不同实验室应用实验方法测定3个标准样品中钛的结果均与标准值吻合;按照实验方法测定2个标准样品中钛的结果与X射线荧光光谱法的测定值均基本一致,方法用于金属硅标准样品和实际样品中0.0014%~0.30%钛的测定,相对标准偏差(RSD,n=22)为1.6%~4.6%。     

钒-9(3,5-溴)水杨基荧光酮-溴化十六烷基三甲基铵显色反应的应用

研究了钒-9(3,5-二溴)水杨基荧光酮-CTMAB三元络合物的显色反应条件。在pH55的六次甲基四胺-HCl缓冲溶液中,钒与试剂形成1∶2的络合物,其最大吸收波长λmax=557nm,表观摩尔吸光系数ε=181×105,钒含量在0～9μg/25mL范围内符合比尔定律。采用适当的分离手段,测定了钢样中的微量钒,结果满意。     

4,5—二溴苯基萤光酮—钛—十六烷基三甲基溴化铵三元络合物测定岩石矿物中钛

在表面活性剂存在下,钛和三羟基萤光酮类试剂能形成灵敏度很高的络合物。本文对4,5—二溴苯基萤光酮—钛(Ⅳ)十六烷基三甲基溴化铵(CTMAB)三元络合物体系做了系统的研究,结果表明:该三元络合物最大吸收在570nm波长处,表观摩尔吸光系数为1.09×10~5,二氧化钛0～12微克/25毫升,符合比尔定律。有色溶液可稳定2小时。形成三元络合物的最佳条件是:酸度pH1～1.2N硫酸,动物胶用量1～2毫升(1％),CTMAB1～4毫升(0.5％),4,5—二溴苯基萤光酮4～6毫升(0.5％乙醇溶液),乙醇5～8毫     

三元协萃体系机理的研究—PMBP-DAMP-DPSO-Er(ClO_4)_3-C_6H_5CH_3体系

本文研究了1—苯基—3—甲基—4—苯甲酰基吡唑酮—5(PMBP或HA)与甲基膦酸二异戊酯(DAMP)和二苯基亚砜(DPSO)三元混合萃取剂的甲苯溶液在高氯酸介质中对Er(Ⅱ)的协同萃取。测得了三元协萃络合物的组成为ErA_3·DAMP·DPSO,三元协萃平衡常数K_(311)=4.6×10~3。讨论了三元协萃络合物的可能结构式。同时还研究了PMBP与DAMP二元混合萃取剂的甲苯溶液对Er(Ⅱ)的协同萃取。测得了二元协萃络合物的组成分别为ErA_3·DAMP及ErA_3·2DAMP,二元协萃平衡常数分别为K_(31)=1.65×10~2(ErA_3·DAMP)及K_(32)=7.1×10~3(ErA_3·2DAMP)。     

深云立交桥梁检测及加固改造

根据深云立交桥梁的检测结果，对该桥目前的整体状况、工作状态，及其使用情况做出综合评价，对桥的病害原因进行了分析，并提出合理的加固方案。     

《儿子与情人》的语码转换与男女二元对立

劳伦斯小说《儿子与情人》一个鲜明的语言特色就是标准英语和当地方言频繁的语码转换。莫瑞尔用方言来对抗妻子,而妻子坚持用标准英语,偶尔也用方言来讽刺、挖苦丈夫。语码转换反映了劳伦斯男女二元对立的哲学思想。     

材料科学技术转型发展与钢铁创新基础设施的建设

摘要：在第4次工业革命浪潮的推动下,钢铁科学与技术正在经历数字化、智能化转型。钢铁行业全流程各工序均为“黑箱”,为多场、多相、多变的巨系统,具有复杂相关关系和遗传效应等。这些不确定性带来了巨大的挑战。挑战和机遇并存。这些不确定性提供了智能化和数字化技术的应用场景资源;钢铁行业极为丰富的大数据提供了挖掘其中蕴含客观规律的数据资源;现代的数据科学、智能技术为解决不确定性问题提供了强大的手段。以数据为中心,以工业互联网为载体,以实验工具、数字数据、计算工具为支撑,建设钢铁企业材料创新基础设施,将可以大幅度提高研发效率,降低研发成本,有力地支撑钢铁材料科学与技术的转型发展。实验工具平台除了传统的实验室仪器装备和中试装备之外,实际生产线被作为主要的实验工具。这些实验工具提供丰富、精准、写实的历史数据和现实生产数据,特别是生产线装备提供实际生产大数据,蕴含着生产过程中的全部规律,是极宝贵的数据资源。利用机器学习、深度学习等现代数据挖掘技术为计算工具,对这些数据资源进行处理、分析、计算,将数据转换为高保真度模型,可以得到具有“原位分析能力”的数字孪生。在工业互联网的总体架构下,以数字孪生为核心,组成信息物理系统,构建起基于数据自动流动的状态感知、实时分析、科学决策、精准执行的闭环赋能体系,解决生产制造、应用服务过程中的复杂性和不确定性问题,提高资源配置效率,实现资源优化,对材料行业转型发展提供关键技术支撑。虚实映射、实时交互、精准控制的信息物理系统与材料创新基础设施合二为一,以材料创新基础设施为基盘,形成具有“原位分析能力”的数字孪生,建设钢铁生产全流程、一体化的信息物理系统,必将推进钢铁行业智能制造蓬勃开展和数字化、智能化转型。     

Status and solidarity in social comparison: Agentic and communal values and vertical and horizontal directions.

Social comparison involves positioning the self relative to others on a vertical or status dimension (ranging from upward to downward comparisons) and a horizontal or solidarity dimension (ranging from contrastive to connective comparisons). Across 3 studies in which 389 undergraduates recorded everyday social comparisons (n = 4,417), downward and connective comparisons were rated as more helpful and mood enhancing than upward and contrastive comparisons. The effects of horizontal comparisons were greater for people for whom solidarity was an important value; however, the effects of vertical comparisons were not greater for people who valued status. The roles of the comparison target, topic, and situation were also explored; for example, noticing undesirable features of the target enhanced status but undermined solidarity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Praise and Blame and Robinson.

Daniel Robinson suggests that much of the civil and criminal law "serves as the institutionalized form of praise and blame". Indeed it does. Pulling at this thread of Robinson's tapestry leads the reader straightaway to a host of truths about how law and morality not only intersect, but work together in harmony. "[L]aw", Robinson says, is a "vivid expression of deeper and impenetrably complex moral theories". This essay explores several of these harmonies, but focuses on two. One is that political society must be seen as the cooperation of free persons according to law, which persons hold common moral understandings. The second has to do with retribution as the moral justifying aim of punishing criminals. The author goes beyond Robinson's limited praise of retribution, and shows that some central features of our practice of punishment are understandable only within the retributive framework. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Voices of fear and anxiety and sadness and depression: The effects of speech rate and loudness on fear and anxiety and sadness and depression.

Two studies investigated the role of expressive vocal behavior (specifically, speech rate and loudness) in fear and anxiety and in sadness and depression. In the 1st study, participants spoke about personally experienced fear and anxiety-arousing and neutral events using 3 different voice styles: fast and loud, normal, and slow and soft. In the 2nd study, participants spoke about personally experienced sad or depressing and neutral events using the same 3 voice styles. In both studies, the participants' highest levels of subjective affective and cardiovascular (CV) arousal occurred when they spoke about the emotional events in a mood-congruent voice style: fast and loud in the case of fear and anxiety, and slow and soft in the case of sadness or depression. Mood-incongruent voice styles canceled the heightened levels of CV arousal normally associated with these negative emotions. The voice-style manipulation had no significant effect on the participants' levels of CV arousal during the neutral discussions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

钢铁产品交易与展示平台的设计与应用

为解决单个企业的信息化投资风险、从整体上降低企业信息化投入,针对大邱庄钢铁产业的类型特点,设计了一种新型信息化公共服务平台。详细阐述了钢铁产品展示及交易平台的建设内容及系统开发技术。该平台集产品展示、信息查询、用户管理功能于一体,实现了全自动、全智能的在线管理和维护,适用于中小型企业。该平台的应用最大化地发挥了大邱庄的产业优势,对大邱庄工业园区的宣传和市场开拓起到了一定的作用。     

Aging and negative affect: The rise and fall and rise of anxiety and depression symptoms.

The relationship between aging and negative affect is dynamic and complex. Although prior studies have often cited lower prevalence rates of anxiety and mood disorders among older individuals, these studies may miss the dynamic relationship between symptoms and aging. To evaluate a nonlinear model of the relationship between aging and negative affect, the author examined measures of neuroticism, anxiety, and depression symptoms in a cross-sectional, community sample (N = 335), ages 18 to 93. Results indicated a curvilinear relationship, with mean symptom levels increasing during early adulthood (until the mid-30s) and then showing a small decline until older adulthood (the mid-70s), when symptoms again increase with age. (PsycINFO Database Record (c) 2010 APA, all rights reserved)