经济耐候钢的研究

系统研究了Mn、Cu含量及腐蚀环境体系对协同作用的影响,并利用电化学测试、扫描电镜、XRD等材料分析技术对带锈电极的腐蚀行为、锈层组成、结构和性质进行了深入分析,阐述了Mn-Cu合金化协同作用的机制;利用Mn-Cu合金化的协同作用,成功开发出Mn-Cu型经济耐候钢和实现工业化试生产。实验表明：热轧Mn-Cu钢具有良好的耐候性,其耐候性略优于传统的09CuPTiRE和SPA-H耐候钢。     

Al、Cr元素对Mg2Ni储氢合金的协同改性研究：（I）对组织结构的影响

采用烧结-机械球磨二步法制备了Mg2Ni（A2B）、Mg1.7Al0.3Ni、Mg2Ni0.8Cr0.2、Mg1.8Al0.2Ni0.8Cr0.2储氢合金材料，采用XRD和SEM研究了A侧取代元素舢和B侧取代元素Cr的加入对Mg2Ni储氢合金组织结构的影响。研究结果表明：Al、Cr元素的同时存在产生了协同改性作用，Cr元素的存在会抑制Al元素与Ni元素之间形成Al3Ni2非吸氢相，能促使Mg、Al、Ni反应形成Mg3AlNi2吸氢相；Al元素的存在会抑制Cr元素与Ni元素形成δ-[Cr，Ni]非吸氢相。     

钢结构柱脚抗剪键设计方法研究

为确定钢结构柱脚中抗剪键的设计难题，考虑抗剪键与混凝土的协同作用效应，基于Timoshenko梁理论，分别按混凝土应力 应变关系的线弹性和非线性模型推导了抗剪键设计埋深的微分方程.对非线性模型的微分方程采用Galerkin法简化为代数方程，通过数值计算得到了抗剪键的理论埋深值，并建立了可供实际应用的计算表格.计算结果表明，按线弹性理论计算的抗剪键埋深偏小，偏于不安全.抗剪键的设计埋深主要与抗剪键的截面有效回转半径、考虑抗剪键与混凝土相对刚度的抵抗惯性矩及抗剪键承担的剪力大小等3个因素有关     

环状磷腈/聚磷酸铵/三聚氰胺膨胀阻燃环氧树脂研究

本文以DOPO衍生物六(4-DOPO羟甲基苯氧基)环三磷腈(DOPOMPC)、聚磷酸铵(APP)以及三聚氰胺(MEL)形成复配膨胀体系(IFR)阻燃环氧树脂.采用极限氧指数(LOI)、水平、垂直燃烧(UL-94)方法研究了IFR体系对环氧树脂体系阻燃性能影响,通过锥形量热(CONE)研究了体系燃烧特性,通过扫描电子显微镜(SEM)对体系成炭情况进行观察.结果表明,IFR膨胀阻燃体系对环氧树脂具有良好的协同阻燃作用,其中8%DOPOMPC/8%APP/4%MEL(EP3)体系LOI值较纯EP(EP0)提高37.8%;各项燃烧参数也得到了改善,热释放速率峰值(pk-HRR)、有效燃烧热平均值(av-EHC)、比消光面积平均值(av-SEA)及一氧化碳释放速率平均值(av-CO)相对于10%DOPOMPC/10%APP/EP(EP1)分别降低了53.8%、84.4%、57.7%和75.8%;拉伸强度、弯曲强度和冲击强度较EP1分别提高了1.3倍、79.4%和2.5倍;宏观拍摄和扫描电镜结果表明EP3膨胀炭层连续、均匀、致密,阻燃效果良好.     

硼-磷-氮协效膨胀型阻燃剂的合成与性能研究

以三聚氰胺(MEL)、磷酸(PA)、硼酸(BA)等为原料,合成了三聚氰胺磷酸盐(MP)和三聚氰胺硼酸盐(MB)中间体,以及三聚氰胺磷酸硼酸盐(MPB)硼-磷-氮协效"三位一体"膨胀型阻燃剂,用红外光谱和元素分析等方法对合成产物的结构和组成进行了表征,确定了阻燃剂合成的最佳条件。探讨了MPB的元素组成对MPB阻燃环氧树脂复合材料氧指数的影响,以及MPB的协同阻燃机理。结果表明:合成MP时,三聚氰胺和磷酸的最佳摩尔比为1:0.5;合成MB时,三聚氰胺和硼酸的最佳摩尔比为10:1;合成MPB-1(以MP为中间体)的最佳质量比为w(MP):w(BA)=3:1;合成MPB-2(以MB为中间体)的最佳质量比为w(MB):w(PA)=0.92:1。MPB-2对环氧树脂的阻燃性能优于MPB-1,这是由于MPB-2中元素组成均衡,使得B-P-N协效作用明显。     

阻燃电线套管专用料的研究

探讨了聚氯乙烯各种阻燃剂的阻燃机理，研究了各种阻烯剂的没用量对制品氧指数及机械性能的影响。确定了半硬质阻燃聚氯乙烯套管的优化配方。     

A New Validation of Relevant Substances for the Evaluation of Beer Aging Depending on the Employed Boiling System

During the last years changes in aging indicators have been observed, supposedly resulting from modern brewing technology. The Research Brewery Weihenstephan (Forschungsbrauerei Weihenstephan) offers excellent opportunities for comparing different modern wort boiling systems under semi‐industrial conditions. Employing three different boiling systems, nine brews were produced. The resulting worts were compared regarding the most common wort parameters. Furthermore the influence of the different boiling systems on aging indicators in the resulting beers was analyzed using a newly developed mass spectrometry‐based method. The decrease in the total amount of aging indicators in industrial beers over the last years is very likely the result of lower thermal intake in modern brewhouse equipment. The total amount of aging indicators is sufficient to describe the differences in modern boiling systems. In summary, 2‐furfural dominates all other indicators in terms of thermal influence. 2‐Furfuryl ethyl ether can be suggested as good indicator of aging as postulated by Eichhorn, whereas β‐damascenone is questionable as an aging indicator. Supplementary experiments were carried out to investigate the role of the aging indicators as stale flavour components. Because of synergistic effects, many stale flavour compounds act as aroma compounds and not only as indicators.     

结合鞣机理研究——协同效应与顺序性

协同效应是制革结合鞣的一个重要特征，它与各鞣剂加入的顺序有关。本文研究了几种金属盐与植物鞣剂结合鞣革，由于鞣剂间加入顺序不同，获得革的耐湿热稳定性不同。这被认为与各鞣剂和胶原之间是否能够形成某种有效的构型有关。     

椰子油乙氧基化物与阴离子表面活性剂协同效应研究

摘要：对椰子油乙氧基化物-30EO（COE-30）与直链烷基苯磺酸（LAS）、脂肪醇聚氧乙烯醚硫酸钠（AES-2）及脂肪醇聚氧乙烯醚羧酸钠（AEC-5）复配的二元体系进行研究,运用非理想溶液理论计算混合胶束和混合吸附层的组成及二者在混合胶束和混合吸附层中协同作用参数。结果表明,复配体系在混合胶束和混合吸附层显示出较强的协同作用,混合胶束中作用参数|βm|= 2~6,混合吸附层中作用参数|βσ|= 2~6。三个复配体系在形成胶束能力和降低表面张力效率方面存在协同增效作用,同时COE-30/AES-2和COE-30/AEC-5体系在降低表面张力能力方面也存在协同增效作用。     

Examination of a Structural Model of Peptidomimicry by Cyclic Acyldepsipeptide Antibiotics in Their Interaction with the ClpP Peptidase

The cyclic acyldepsipeptide (ADEP) antibiotics act by binding the ClpP peptidase and dysregulating its activity. Their exocyclic N‐acylphenylalanine is thought to structurally mimic the ClpP‐binding, (I/L)GF tripeptide loop of the peptidase's accessory ATPases. We found that ADEP analogues with exocyclic N‐acyl tripeptides or dipeptides resembling the (I/L)GF motif were weak ClpP activators and had no bioactivity. In contrast, ADEP analogues possessing difluorophenylalanine N‐capped with methyl‐branched acyl groups—like the side chains of residues in the (I/L)GF motifs—were superior to the parent ADEP with respect to both ClpP activation and bioactivity. We contend that the ADEP's N‐acylphenylalanine moiety is not simply a stand‐in for the ATPases' (I/L)GF motif; it likely has physicochemical properties that are better suited for ClpP binding. Further, our finding that the methyl‐branching on the acyl group of the ADEPs improves activity opens new avenues for optimization.