Two-State Reactivity: Personal Recounting of its Conception and Future Prospects

This essay tells the story of the conception of the Two-State Reactivity (TSR) notion. Since scientific career is part of life's flow, the story blends sub-stories of scientific colleagues and events. This is also a story of a beguiling paradigm, which has started from a puzzling reactivity of the diatomic oxidant FeO⁺, has continued to larger oxidants, like the active species of Cytochrome P450 and of nonheme enzymes, and its extension to reductive processes. Finally, the essay discusses prospects of experimental probing of the reactive spin-state, and of the transition state constitution for these reactions by means of tunneling-augmented kinetic isotope effects.     

纳米TiO2光触媒薄膜的制备及改性研究进展

根据近年来光催化技术的研究成果,从3个方面综述了纳米TiO2薄膜光触媒薄膜的研究进展:制备工艺、影响TiO2薄膜光催化活性的因素和改善其光催化效率的方法.最后,对目前TiO2光触媒研究中存在的主要问题和发展前景进行了简要评述和展望.     

Reactivity to a laboratory stressor among individuals with bipolar I disorder in full or partial remission.

Strong links have been documented between life events and the course of bipolar disorder. Laboratory studies of stress provide an opportunity to understand the mechanisms involved in reactivity to stressors, but few such studies have been done in the bipolar field. In the current study, 28 people with bipolar I disorder in full or partial remission and 40 people with no history of a mood disorder were randomly assigned to 1 of 3 conditions involving different levels of failure feedback on a concept formation task. Confidence, affective reactions, and performance on a subsequent anagram task were assessed. Results provide tentative support for reactivity to the stressor among the bipolar group, although reactivity was limited to impaired anagram performance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Arousal of negative emotions and symptom-specific reactivity in chronic low back pain patients.

Anger may have greater effects on chronic pain severity than other negative emotions and may do so by increasing muscle tension near the site of injury (symptom-specific reactivity). For patients with chronic low back pain (CLBP), relevant muscles are lower paraspinals (LP). Ninety-four CLBP patients and 79 controls underwent anger and sadness recall interviews. EMG and cardiovascular activity were recorded. Patients exhibited greater LP tension increases during anger and slower recovery than controls. Only patients showed greater LP reactivity during anger than sadness. For both groups, trapezius reactivity during anger and sadness did not differ. LP reactivity to anger correlated with everyday pain severity for patients. Anger-induced symptom-specific LP reactivity may be linked to chronic pain aggravation among CLBP patients. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

焦炭的钝化处理及其机理

 用浸泡的方法将H3BO3、Na2CO3、CaCl2、FeCl3等负载于焦炭中,并用SEM、EDS、XPS对浸泡硼酸后的焦炭结构和形貌进行了表征,对浸泡硼酸后的焦炭与二氧化碳的反应性、抵抗碱和铁的侵蚀能力、深层反应以及硼的钝化机理等进行了研究。结果表明：通过浸泡可以将不同浓度的矿物质负载于焦炭中,且B的最终存在形式是B2O3;碱和铁的存在可以加速焦炭的溶损反应,硼的存在可以抑制焦炭的溶损反应,并具有明显的抵抗或屏蔽碱、铁的侵蚀能力。     

石灰反应活性对漂粉精生产的影响

本文介绍了生产漂粉精的主要原因石灰的反应活性对生产的重要影响,包括过程控制、原料消耗和产品质量等。     

玉米秸秆木质素的去甲基化/羟乙基化复合改性研究

利用亚硫酸钠和乙二醛对玉米秸秆木质素进行去甲基化/羟乙基化复合改性,以提高木质素的羟基含量和反应活性。通过FT-IR、TG、DSC以及乙酰化滴定等技术研究了木质素复合改性效果。结果表明:经过去甲基化/羟乙基化复合改性后的玉米秸秆木质素具有优异的活性,其总羟基质量分数较原料木质素提升了88.33%,酚羟基提升了14.70%,反应活性得到明显增强。FT-IR表征发现:复合改性从多方面提升了木质素的羟基含量,对羟基含量的增加有着较为显著的效果。热重和DSC表征发现:复合改性木质素(G-DL)相较于原料木质素降解得更加彻底,其放热峰出现在77℃,放热量达459.82 J/g,反应活性较去甲基化木质素(DL)和原料木质素更高。     

Calcium addition in straw gasification

The present work focuses on the influence of calcium addition in gasification. The inorganic-organic element interaction as well as the detailed inorganic-inorganic elements interaction has been studied. The effect of calcium addition as calcium sugar/molasses solutions to straw significantly affected the ash chemistry and the ash sintering tendency but much less the char reactivity. Thermo balance test are made and high-temperature X-ray diffraction measurements are performed, the experimental results indicate that with calcium addition major inorganic-inorganic reactions take place very late in the char conversion process. Comprehensive global equilibrium calculations predicted important characteristics of the inorganic ash residue. Equilibrium calculations predict the formation of liquid salt if sufficient amounts of Ca are added and according to experiments as well as calculations calcium binds silicon primarily as calcium silicates and less as potassium calcium silicates.     

磷矿的反应活性及其评价方法研究

介绍评价磷矿反应活性的实验装置;用磷矿在一定浓度酸液中,在一定温度、一定反应时间下的分解率表示磷矿的反应活性。实验研究了不同因素对磷矿反应活性的影响,并测试了11种磷矿的反应活性指数及抗硫酸的阻缓性能。评价方法与实验结果均具有参考价值。     

丙烯腈/醋酸乙烯酯/甲基丙烯磺酸钠三元水相共聚体系竞聚率的研究

根据该AN/VAC/SMAS三元共聚体系特征,根据竞聚率计算的原理,融合二元共聚和三元共聚的基础理论,利用核磁共振技术测定共聚物组成,用Mayo-lewis共聚物组成方程拟合实验数据计算竞聚率.同时研究了AN/VAC/SMAS三元水相共聚反应体系的特征,测定了该三元共聚体系表现竞聚率.