新型包膜尿素的制备及其特性的研究

以桐油为主要成膜物质制备新型包膜尿素。研究结果表明，包膜后尿素颗粒的粒径分布更加均匀，有外密封层时可在包膜尿素表面形成连续致密的包膜，包膜尿素因之获得逐步释放特性。使用溶解率和无土柱淋溶率可以评价包膜尿素的养份释放特性。     

包裹型缓释肥料生产技术实验研究

通过一系列的实验室研究和小型试验 ,选出了成本低、效果较好的包裹控释材料和粘结剂 ,提出了制造包裹型缓释肥料的生产工艺。对小试生产的包裹型缓释肥料进行缓释性评价 ,结果表明 :肥料的缓释性良好 ,工艺简便易行 ,生产成本低。     

油价临界点理论、方法及应用初探

提出油价临界点概念,解决如何在波动油价下,选择具有一定规模的石油项目.通过油价临界点的应用,石油公司能够准确判断石油项目的投资机会,科学调整石油项目的经营规模,合理把握国际油价波动的影响,为提高项目抗风险能力提供科学依据.     

Status of aqueous surfactant phase science

Recent phase studies of several surfactant-water systems, using new or refined methods, have revealed significant errors in earlier phase diagrams. These diagrams had been determined largely using methods based on the isoplethal phase studies principle. This principle has inherent limitations which do not exist in isothermal methods. Isothermal nuclear magnetic resonance and refined calorimetric methods have been extensively used in recent surfactant phase studies. Methods based on the new lyotrope gradient (swelling) principle show great promise as a means of improving the efficiency and quality of surfactant phase studies.     

Impacts of new technologies on media usage and social behaviour in domestic environments

Technological infrastructure at home is changing continuously and is becoming increasingly interconnected. Media devices, including the TV set, provide access to the Internet and offer manifold opportunities to consume media on demand. Additionally, personal devices, such as smartphones, also enable flexible consumption and sharing of media. Questions about how these technologies change the user's media usage and how these changes affect the social structure of a household, however, remain largely unanswered. In order to gain insight into the adoption of new technologies into daily routines, we explored these changes in respect of people's media usage in a qualitative long-term Living Lab study. We will present findings regarding personal routines, flexible integration of new devices into existing practices, influences on households as social systems and related issues in device access and collective use. We will highlight potentials and conflicts regarding device shifts and roles; restrictions in device access; social influences in the living room; and individual changes in media consumption.     

Mechanism for the reduction of NOx on Rh/sulfated titanias

Titanias of different surface areas have been sulfated and used as supports of Rh oxide for the selective catalytic reduction of nitrogen oxides. Only the sulfation of TiO₂ of large surface areas gives strong Br?nsted acid sites, retaining pyridine up to 773 K. Low surface area anatase is unable to retain sulfates. The catalytic activities measured at 523 K, increase with the number of acid sites, and then reach a plateau, showing the intervention of acidity in the SCR. This is true only for Rh but not for Pt. The investigation of the elemental steps on Rh/sulfated TiO₂ by in situ diffuse reflectance spectroscopy permits to clarify a few points: the oxidation of propene, presumably to acetaldehyde, occurs by the reaction with nitrates adsorbed on the support. The further oxidation of this intermediate by NO₂ yields an isocyanate, which can be hydrolysed to ammonia.     

双机共用尾水调压室阻力系数试验研究

主要对水流在流入和流出调压室时,其流量比、阻抗孔面积和运行机组数目的变化对调压室阻力系数的影响开展了研究,并对双机共用尾水调压室的物理模型进行了水工试验。试验结果表明,调压室的阻力系数会随着流量比的增大和阻抗孔面积的减小而增大。其中,在分流工况时,双机运行的调压室阻力系数比单机运行的调压室阻力系数要大;在合流工况时,单机运行的调压室阻力系数与双机运行时的相差无几。试验结果可为类似型式的尾水调压室的设计与研究提供借鉴及参考。     

常温微量氯气吸附剂的制备及其性能研究

本实验用一次等量浸渍法制备氯气吸附剂,通过分光光度法测定进出口的微量Cl2并重点分析了影响氯气吸附剂性能的一些评价参数,对于改进测定方法,准确测定微量氯气,提高Cl2吸附剂的净化性能都具有十分重要的意义。     

Computer-supported mindfulness: Evaluation of a mobile thought distancing application on naive meditators

The last 2 decades have seen a constantly increasing interest in mindfulness, due to its positive effects on health and well-being. Recently, a number of mobile applications aimed at supporting people in practicing mindfulness techniques have appeared, but their efficacy has not been formally evaluated yet. In this paper, we first introduce the reader to mindfulness techniques, traditional as well as computer-based. Then, we propose and evaluate a mobile application (called AEON) aimed at helping users in practicing thought distancing, i.e. a mindfulness technique that requires one not to react in response to his/her thoughts but to be aware of them and observe them while they go away. AEON allows the user to enter his/her thoughts and visualize them as written in ink on a parchment placed under water. By touching the screen, the user can interact with the water and produce waves that progressively dissolve each written thought. We evaluate AEON on a sample of naive meditators (i.e. people with no or minimal experience with meditation), contrasting it with two traditional thought distancing techniques that are not computer-based. The first traditional technique requires users to mentally visualize their thoughts as printed on clouds and observe them as they pass by, while the second requires users to write their thoughts on cards, then pick up the cards one at a time, look at them and toss them into a wastepaper basket. AEON obtained better results in terms of achieved mindfulness, perceived level of difficulty and degree of pleasantness. Since practicing mindfulness tends to be difficult for naive meditators, these results suggest that AEON can be a novel and effective way to help them approach mindfulness.     

绿色环保橡胶硫化配方研究

针对硫磺、促进剂M(2-巯基苯并噻唑)在橡胶制品加工中对环境的污染和对工人健康的危害，研究了硫磺、硫化剂DCP(过氧化二异丙苯)、硫化促进刑M、促进剂CZ(N-环己基-2-苯并噻唑次磺酰胺)在橡胶制品加工中的应用，从环保的角度进行了新的配方设计，并进行了性能测试。结果表明：同等务件下，生产相同的产品胶板，使用硫化剂DCP及促进剂CZ的制品综合性能要优于使用硫磺和促进刑M的制品，且有利于环保。