400 - 432 exothermic peak in dta curve of remainders and 460 - 490 weight loss peak in dtg curve appeared at the decaying process in oasis ecosystem , but did n ' t appear in desert ecosystem . the weight loss rate of dta 300 peak was correlative to qv outstandingly ; the weight loss rate of dta 450 peak was not correlative to qv 绿洲生态条件下，腐解过程中玉米秸和大豆秸的dta曲线中出现了400 - 432的小放热峰， dtg曲线中出现了460 - 498的小失重峰，而荒漠生态条件下则没有出现。
The mechanism of dual activation reactive milling is discussed . according to the mechanism , the mechanical activation from ma and thermal activation from the second high - exothermic reaction system ( ti - c ) are utilized for synthesizing of nanometer - sized tic powder from low - cost tio2 powders . in the process , the mechanical activation is a fundamental 在“双重激活反应研磨”机制中，利用ma过程中的机械激活作用以及所引入的ti - c高放热反应体系所带来的热激活作用，以低成本的tio _ 2为原料合成纳米tic粉末。
High performance concrete is a good example of the application of high performance cement - based materials . superplasticizer has played the vital roles in the high performance of concrete . the systematical study on the rheological characteristics 、 hydration exothermic reaction 、 electrical property 、 early microstructure and shrinkage performance of the fresh cement paste with different superplasticizers were conducted in order to analyze the impact of superplasticizer to the hydration process of cement , by researching the different property of fresh cement with superplasticizer 本文选择掺有不同类型高效减水剂的新拌水泥浆体的流变特征、水化热性能、电性能、早期微观结构以及收缩性能等作为研究课题,旨在通过系统地研究含高效减水剂的新拌水泥浆体的各项性能,分析高效减水剂对水泥水化过程的影响,指导水泥、混凝土及减水剂的生产实践。
The concrete added organic water - reduce and plastic agent , called yj , would improve concrete workability , and reduce slump loss , decrease the exothermic rate at the early stage and postpone the arrival time of the highest temperature . lt is compatible to cement well , and had good retarding property , and some air - entrained effect 81mpa提高到3 28mpa ； 28d抗压强度比为135 ；拌和物工作性能优良。应用klfs ，成功配制出c50 c70复合抗裂防渗高性能混凝土，并在实际工程中得到应用。
Noticing that strong exothermic reaction due to large negative enthalpy of mixing can occur among major components of ti - zr - based quasicrystal alloy systems and zr - based bulk amorphous alloy systems , we developed for the first time a new technique for fabricating both ti - zr - ni systems quasicrystal materials and zr - al - ni - cu systems amorphous - based composite materials using laser - induced self - propagating reaction synthesis ( lsrs ) 注意到构成ti - zr基准晶合金体系和zr基大块非晶合金体系的主要组元之间具有很大的负混合焓，因而能够发生很强的放热反应。利用这一特点，我们首次开展了激光诱导自蔓延反应合成ti - zr - ni系准晶材料和zr - al - ni - cu系非晶复合材料的探索研究。
This paper discussed the thermal equilibrium and critical condition in exothermic reaction system , and deduced the values of dynamic parameters such as the judging criterion for thermal runaway , the ignition temperature and extinction temperature in the critical state of thermal runaway when there is no consumption of reaction materials 摘要讨论化学放热系统的热稳定性和临界条件，用化学反应物无消耗的假设推导化学放热系统热失控（热爆炸）时的动力学参数临界值，得到热失控的判据、临界点火温度和熄火温度。
