H2BPMPBD和AP协同萃取Ln(Ⅲ)的研究

研究了1,4-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)丁二酮-[1,4](H2BPMPBD,简为H2A)和氨基比林(AP)的氯仿溶液从硝酸介质中对Ln( )的协同萃取。用斜率法确定了萃合物的组成为LaA·HA·(AP)2,考察了萃取剂浓度和溶液酸度对萃取机理的影响,测定了半萃取pH1/2值和萃取反应平衡常数Ks.e.,求得了反应的焓变和熵变。     

火炬树叶的抗氧化性及其与Vc协同作用的研究

为研究火炬树叶的抗氧化性及其与Vc、柠檬酸的协同作用,本文以猪油为底物,采用高温诱导使其发生脂质过氧化反应,测定体系的过氧化值,结果表明:火炬树叶甲醇提取物可有效延缓猪油脂质过氧化反应,适量加入Vc可提高其抗氧化性。     

An Investigation of Passivatior of Cerium for Red Copper

The paperis studied and probed into the cerium application in the passivators of red copper. Through the experimentation of single factor we knoew that ithas remarkable quality influence among red copper passivators by Ce3 , determined that there is obvious function in its small content. And we educed a best technology through the orthogonal test. Research shows: there are obvious changes in the molecular structure of the passivating films after adding the Ce compounds and anticorrosive performance is improved.     

苯并三氮唑羧酸衍生物和磷酸三丁酯的摩擦学协同性能

合成了一种新型无磷苯并三氮唑衍生物（BTB），利用四球摩擦磨损试验机考察了单剂BTB、磷酸三丁酯（TBP）以及不同配比的BTB和TBP的复合添加剂在液体石蜡中的摩擦磨损性能；用带散射能谱的扫描电镜分析了磨损表面形貌和元素分布。结果表明：所合成的BTB添加剂能提高基础油的承栽能力和减摩、抗磨性能，并且与TBP具有协同作用；在摩擦过程中发生物理、化学吸附的同时，与金属表面发生摩擦化学反应，生成一层复合膜，从而起到了极压抗磨作用。     

烧结混合机细颗粒物蒸汽相变凝并及水浴协同治理

分析了蒸汽相变凝并及水浴协同治理技术。A钢铁厂烧结一次混合机采用该技术改造后,工作环境明显改善,车间环境空气颗粒物质量浓度大幅降低,设备各项运行参数良好,排放质量浓度满足钢铁企业超低排放指标限值要求。     

Synergistic Flame-retardant Effect and Mechanism of Nitrogen–Phosphorus-Containing Compounds for Glass Fiber-reinforced Polyamide 66

The system based on aluminum phosphinate (OP) and melamine polyphosphate was applied in flame-retardant glass fiber-reinforced polyamide 66. From a qualitative and quantitative point of view, the incorporation of OP played a positive role in obtaining the homodisperse of flame-retardant particles throughout the composites. A two-step cooling mode during the degradation process was established to play an effective role in absorbing heat to retard the flame spread rate and provide enough time for barrier generation. In condensed phase, the cross-linked structure formed in residue promoted the construction of the high-quality barrier layer.     

Applications of percolation theory to fungal spread with synergy

There is increasing interest in the use of the percolation paradigm to analyse and predict the progress of disease spreading in spatially structured populations of animals and plants. The wider utility of the approach has been limited, however, by several restrictive assumptions, foremost of which is a strict requirement for simple nearest-neighbour transmission, in which the disease history of an individual is influenced only by that of its neighbours. In a recent paper, the percolation paradigm has been generalized to incorporate synergistic interactions in host infectivity and susceptibility, and the impact of these interactions on the invasive dynamics of an epidemic has been demonstrated. In the current paper, we elicit evidence that such synergistic interactions may underlie transmission dynamics in real-world systems by first formulating a model for the spread of a ubiquitous parasitic and saprotrophic fungus through replicated populations of nutrient sites and subsequently fitting and testing the model using data from experimental microcosms. Using Bayesian computational methods for model fitting, we demonstrate that synergistic interactions are necessary to explain the dynamics observed in the replicate experiments. The broader implications of this work in identifying disease-control strategies that deflect epidemics from invasive to non-invasive regimes are discussed.     

Synergistic effects of high pressure processing and slightly acidic electrolysed water on the inactivation of Bacillus cereus spores

Bacillus spores are concerns for their resistance to heat, high pressure processing (HPP), and disinfectants. We examined the effects of HPP and slightly acidic electrolysed water (SAEW) on inactivation of B. cereus spores. Spores' suspensions were prepared with 2‐(N‐morpholino) ethanesulfonic acid (MES) buffer or SAEW with available chlorine content (ACC) of 24, 35, 44 or 55 mg L^?1, and then subjected to HPP. The individual effects of HPP or SAEW on spores were negligible (<1.0 log CFU mL^?1). With factorial design and anova analysis, HPP + SAEW treatment was shown to have significantly positive effects on spores’ inactivation. The optimal conditions were 300 MPa HPP + SAEW with 44 mg L^?1 ACC or 200 MPa HPP + SAEW with 44 mg L^?1 ACC + 500 MPa HPP, producing reductions of 3.27 and 3.99 log CFU mL^?1, respectively. HPP + SAEW have potentials to serve as two effective hurdle techniques for inactivating B. cereus spores.     

密胺树脂强化“脱硫石膏-玻纤”的成型过程与机制

为了资源化利用烟气脱硫产生的工业废弃物脱硫石膏,以密胺树脂强化的脱硫石膏-纤维复合体系为研究对象,将密胺树脂固化成型条件与石膏的水化成型过程进行匹配与优化,发展出具有优异综合性能的石膏复合板材.结果表明:密胺树脂的固化交联与石膏晶须生长过程的合理匹配与协同,既有助于形成有机-无机紧密结合,同时也有助于加强脱硫石膏晶须与玻璃纤维之间的附着,促进实现密胺树脂对材料性能的强化;石膏复合板的抗折强度不低于18 MPa,抗压强度大于25 MPa,弹性模量大于6500 MPa,24 h吸水率低于3.0%,主要性能超过传统的水泥或硅酸钙类型的基础板材,具有明显的技术及市场开发前景.     

Preparation and performance of waterborne polyurethane coatings based on the synergistic flame retardant of ferrocene,phosphorus and nitrogen

A synergistic reactive flame-retardant polyol (AFeDH) containing ferrocene, phosphorus, and nitrogen elements was synthesized from ferro-formaldehyde, 5-amino-1,3, 4-thiadiazole-2-mercaptan, 9,10-dihydro-9-oxa-10-phos-phaphenanthrene-10-oxide and hydroxyl terminated polybutadiene acrylonitrile, and then applied for flame retarding waterborne polyurethane (WPU). The chemical structures of intermediates and final products were well characterized to confirm the successful preparation of ternary P-N-Fe flame retardant. The effects of incorporated AFeDH on thermal stability, flame retardancy and mechanical properties of AFeDH/WPU films were systematically studied. The results indicated that LOI value increased with the increase amount of AFeDH, while the value then decreased as the loading content above 6 wt%. This increase in flame retardancy results from the competition between the catalytic degradation of iron and the catalytic carbonization. Benefiting from the good synergistic effects among each element of AFeDH, the WPU/AFeDH films perform the decreased heat release and smoke production. Moreover, the flame retardant films also show the enhanced tensile strength of 33.8 MPa and elongation at break of 763.3%. Therefore, this novel halogen-free flame retardant shows an excellent synergistic effect among P, N, and Fe elements, which has a great potential in the application of flame retardant WPU.