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复配气相缓蚀剂对多种金属大气腐蚀的综合保护作用研究
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作者 韩兴存 林德雨 张金伟 《材料保护》 CAS CSCD 北大核心 2019年第1期40-43,112共5页
为了应对海洋大气环境中电子设备容易被腐蚀的难题,制备了一种复配气相缓蚀剂。通过半封闭空间挥发减量试验、缓蚀膜疏水性表征、模拟环境和海洋大气环境试验等评价了复配气相缓蚀剂对钢、T2紫铜、黄铜、银、铝等电子设备常用金属的气... 为了应对海洋大气环境中电子设备容易被腐蚀的难题,制备了一种复配气相缓蚀剂。通过半封闭空间挥发减量试验、缓蚀膜疏水性表征、模拟环境和海洋大气环境试验等评价了复配气相缓蚀剂对钢、T2紫铜、黄铜、银、铝等电子设备常用金属的气相缓蚀性能。结果表明:复配气相缓蚀剂对以上金属均具有显著的缓蚀作用,其中对钢的缓蚀率为86.9%,对T2紫铜为58.7%,对黄铜为96.2%,对银和铝在模拟腐蚀环境中具有一级气相缓蚀能力,是一种性能优良的电子设备多金属大气腐蚀综合防护材料。 展开更多
关键词 气相缓蚀剂 复配 大气腐蚀 电子设备
不同级配类型增韧型环氧沥青混合料路用性能研究
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作者 刘攀 李璐 +1 位作者 盛兴跃 郝增恒 《公路》 北大核心 2019年第3期38-42,共5页
针对环氧沥青材料在钢桥面铺装中的应用,制备了增韧型环氧沥青混合料,并研究了5种级配类型对增韧型环氧沥青混合料马歇尔性能、高温稳定性、低温抗裂性、水稳定性能、抗疲劳性能及抗滑性能的影响。试验结果表明,级配类型对增韧型环氧沥... 针对环氧沥青材料在钢桥面铺装中的应用,制备了增韧型环氧沥青混合料,并研究了5种级配类型对增韧型环氧沥青混合料马歇尔性能、高温稳定性、低温抗裂性、水稳定性能、抗疲劳性能及抗滑性能的影响。试验结果表明,级配类型对增韧型环氧沥青混合料的抗滑性能影响较大,对混合料的其他路用性能影响较小,不同级配类型下的混合料均具有良好的路用性能。增韧型环氧沥青混合料能够满足钢桥面铺装对材料性能的要求。 展开更多
关键词 增韧型环氧沥青 混合料 级配 路用性能 钢桥面铺装
Eutectic mixture promoted CO2 sorption on MgO-TiO2 composite at elevated temperature
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作者 Vishwanath Hiremath Monica Louise T.Trivino Jeong Gil Seo 《环境科学学报:英文版》 SCIE EI CAS CSCD 2019年第2期80-88,共9页
The development of carbon dioxide (CO2) sorbents that can operate at elevated temperatures is significant for the advancement of pre-combustion capture technologies. Recently, promoter-based systems composed of alkali... The development of carbon dioxide (CO2) sorbents that can operate at elevated temperatures is significant for the advancement of pre-combustion capture technologies. Recently, promoter-based systems composed of alkali/alkaline earth metal nitrates and/or carbonates have been considered as next-generation solid sorbents due to their improved CO2 uptake and kinetics. However, obtaining stable MgO sorbents against temperature swing regeneration still remained challenging. Herein, we report MgO-TiO2 solid sorbents promoted by eutectic mixture (KNO3 and LiNO3) for elevated temperature CO2 sorption. The developed sorbents show improved CO2 sorption capacity, which may be attributed to the alternative CO2 sorption pathway provided by the ionization of highly dispersed MgO in the eutectic mixture. The MgO-TiO2 framework was also shown to assist in retaining the MgO configuration by constraining its interaction with CO2. Furthermore, it is demonstrated that constructing composite structures is essential to improve the CO2 sorption characteristics, mainly recyclability, at elevated temperatures. The developed promoter integrated sorbents showed exceptionally high CO2 sorption capacity of > 30 wt.% at an elevated temperature (300°C) with pronounced stability under temperature swing operation. 展开更多
关键词 MgO-TiO2 COMPOSITE Elevated temperature CO2 capture EUTECTIC mixture promoter MGO stability
Weed growth,herbicide efficacy,and rice productivity in dry seeded paddy field under different wheat stubble management methods 预览
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作者 Muhammad Zia-Ul-Haq Abdul Khaliq +4 位作者 Qiang Sheng Amar Matloob Saddam Hussain Saba Fatima Zeshan Aslam 《农业科学学报:英文版》 SCIE CAS CSCD 2019年第4期907-926,共20页
To ascertain the influence of wheat stubble management options and chemical weed control methods on weed growth and productivity of dry direct-seeded fine rice,a two years’field study was undertaken at the Agronomic ... To ascertain the influence of wheat stubble management options and chemical weed control methods on weed growth and productivity of dry direct-seeded fine rice,a two years’field study was undertaken at the Agronomic Research Farm,University of Agriculture,Faisalabad,Pakistan in 2013 and 2014.Different wheat stubble management methods,viz.,incorporation,burning and retention were executed during seed-bed preparation.While,herbicide treatments comprised of a weed check,weed free,pendimethalin followed by tank mixture of fenoxaprop p-ethyl+ethoxysulfuron ethyl,and bispyribac sodium followed by tank mixture of fenoxaprop p-ethyl+ethoxysulfuron ethyl.Results revealed that weed control efficacy of both herbicide treatments ranged from 84 to 94%.Herbicide treatments significantly reduced weed density(88–90%)and dry weight(86–88%),while improved the rice growth attributes compared with weed check.Application of bispyribac sodium followed by tank mixture of fenoxaprop p-ethyl+ethoxysulfuron ethyl in stubble retention recorded 226 and 273%increase in kernel yield over weedy check in 2013 and 2014,respectively.In stubble incorporation,pendimethalin followed by tank mixture of fenoxaprop p-ethyl+ethoxysulfuron ethyl was more effective in increasing(256–293%)rice yields over weedy check.Among different treatment combinations,the maximum net benefits(1 397.49–1 472.22 USD ha–1),net returns(636–700 USD ha–1),benefit cost ratio(1.77–1.83)and marginal rate of return(2 187–2 330%)were recorded with the application of bispyribac sodium followed by fenoxaprop p-ethyl+ethoxysulfuron ethyl in stubble retention.In crux,application of bispyribac sodium followed by tank mixture of fenoxaprop p-ethyl+ethoxysulfuron ethyl in stubble retention is efficient approach to control weeds,and get maximum rice productivity and net economic returns under dry seeded system. 展开更多
关键词 HERBICIDE mixture weedy check STUBBLE management WEEDS density and DRY weight DSR
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热碱-分步酶水解-厌氧消化工艺处理秸秆畜粪混合物料及其甲烷高值化条件
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作者 卞爱琴 远野 +5 位作者 张璐璐 付强 陈天明 何磊 丁成 王爱杰 《环境科学》 EI CAS CSCD 北大核心 2019年第2期1003-1010,共8页
为获得秸秆畜粪混合物料在厌氧消化过程中的甲烷高值化产出,提出了一种新型'热碱-分步酶水解-厌氧消化'组合工艺.以玉米秸秆和牛粪混合物料作为实验对象,考察物料中纤维素、半纤维素、蛋白质获得高溶出效率的热碱预处理条件;分... 为获得秸秆畜粪混合物料在厌氧消化过程中的甲烷高值化产出,提出了一种新型'热碱-分步酶水解-厌氧消化'组合工艺.以玉米秸秆和牛粪混合物料作为实验对象,考察物料中纤维素、半纤维素、蛋白质获得高溶出效率的热碱预处理条件;分步投加纤维素酶和蛋白酶的剂量及水解时间;热碱预处理后的混合浆液和热碱-酶水解后的混合水解液厌氧消化甲烷产率及产气周期.结果表明,在80℃和0. 5%Na OH碱用量条件下,纤维素、半纤维素和蛋白质的溶出效率(%TS)最高,与未预处理相比(对照组),分别提高24. 84%、12. 24%和8. 92%;分步酶水解的过程和条件为:先投加80 U·g-1的纤维素酶水解18 h,再投加20 U·g-1的蛋白酶水解4 h,纤维素和蛋白质的水解效率可分别达到74. 08%和74. 01%,获得的水解液中糖类提高12~32倍;在厌氧消化阶段,热碱-酶水解后的水解液甲烷产量最高值可达750 m L·h-1,产气周期50 h,相比于热碱预处理后的底物消化(对照组),产甲烷效率提高了约14倍,产气周期缩短了约17 d.热碱-酶水解预处理能有效地解除混合物料厌氧消化过程的水解限速,研究结果可以为开发高效的农业废弃物能源高值化利用技术提供参考依据. 展开更多
关键词 秸秆畜粪 混合物料 热碱预处理 酶水解 厌氧消化 甲烷产率
爆炸气体或蒸气混合物的类别判定 预览
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作者 黄旭 《石油化工设计》 CAS 2019年第2期73-74,I0004共3页
石油化工企业的生产装置在生产过程中会产生大量爆炸危险气体,需要选择合理的防爆电气及其他设备以保证工艺的装置安全生产。根据现行国内、外标准规范的要求,结合工程示例,研究分析了可燃性爆炸危险介质混合物的分类方法,给出对于含有... 石油化工企业的生产装置在生产过程中会产生大量爆炸危险气体,需要选择合理的防爆电气及其他设备以保证工艺的装置安全生产。根据现行国内、外标准规范的要求,结合工程示例,研究分析了可燃性爆炸危险介质混合物的分类方法,给出对于含有氢气的爆炸危险气体的计算公式,并得出不是含有氢气的可燃性爆炸危险介质混合物都应为ⅡC的分类。 展开更多
关键词 爆炸 混合物 最大试验安全间隙 最小点燃电流比
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啶酰菌胺与烯肟菌酯复配对灰葡萄孢的毒力增效作用
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作者 牛慧慧 赵建江 +3 位作者 韩秀英 王文桥 毕秋艳 马志强 《农药》 CAS CSCD 北大核心 2019年第1期61-64,共4页
[目的]明确啶酰菌胺与烯肟菌酯复配对灰葡萄孢的毒力增效作用。[方法]采用菌丝生长速率法测定2种药不同配比对灰葡萄孢的毒力;采用孢子萌发法和离体叶片法测定最佳组合对灰葡萄孢的毒力并进行田间试验。[结果] 2者以6∶1复配时增效最明... [目的]明确啶酰菌胺与烯肟菌酯复配对灰葡萄孢的毒力增效作用。[方法]采用菌丝生长速率法测定2种药不同配比对灰葡萄孢的毒力;采用孢子萌发法和离体叶片法测定最佳组合对灰葡萄孢的毒力并进行田间试验。[结果] 2者以6∶1复配时增效最明显,对孢子萌发和其他菌株的菌落扩展,对灰霉病的保护和治疗作用均显示增效;在剂量为250~350 g a.i./hm^2时,对灰霉病的防效高于80%。[结论]啶酰菌胺与烯肟菌酯复配对灰霉病防效高,可用于灰霉病的防治。 展开更多
关键词 灰葡萄孢 啶酰菌胺 烯肟菌酯 混配 增效作用
Tribo-charging of binary mixtures composed of coarse and fine particles in gas-solid pipe flow
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作者 Haifeng Wang Farzam Fotovat +1 位作者 Xiaotao T. Bi John R. Grace 《中国颗粒学报:英文版》 SCIE EI CAS CSCD 2019年第2期101-109,共9页
Experiments were conducted to investigate the effect of adding fines on the tribo-charging of coarse glass beads. Four types of fines, i.e., copper, stainless steel, uncoated and silver-coated fine glass beads, mixed ... Experiments were conducted to investigate the effect of adding fines on the tribo-charging of coarse glass beads. Four types of fines, i.e., copper, stainless steel, uncoated and silver-coated fine glass beads, mixed w让h 240-830 μm glass beads were conveyed by air through a stainless-steel spiral pipe acting as a tribo-charger. Regardless of the type or electrical conductivity of the fine particles tested, adding small amounts of fines (up to 10wt%) to coarse glass beads resulted in a sharp increase in the mass and surface charge densities of the particles. In gen eral, the profiles of the mass and surface charge den sides of the fine-coarse particle mixtures as a function of the mixture composition were determined by the relative magnitude of contact potential differences and the total surface areas of all the comp on ents. The domi nant particle tri bo-electrification mecha nism switched from coarse particle-wall con tacts to fine particle-wall contacts when the fines weight percentage in the mixture exceeded 10%. A model was developed to predict the mass charge density of bi nary mixtures as a function of the mixture composition. 展开更多
关键词 Tribo-charging ELECTROSTATICS FINE particles BINARY MIXTURE GAS-SOLID flow
烧结混合料水分自动控制系统的开发及应用
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作者 谭奇兵 文虹力 +2 位作者 蒋杰 黄俊程 李宗社 《烧结球团》 北大核心 2019年第2期18-23,68共7页
混合料水分在烧结过程中有着制粒和导热的作用,水分的控制一直是烧结生产中关注的重点。为了更好地对混合料水分进行控制,开发了一种以红外水分分析仪、微波水分分析仪及变频水泵等作为硬件基础,以PID控制、前馈控制、反馈控制等来实现... 混合料水分在烧结过程中有着制粒和导热的作用,水分的控制一直是烧结生产中关注的重点。为了更好地对混合料水分进行控制,开发了一种以红外水分分析仪、微波水分分析仪及变频水泵等作为硬件基础,以PID控制、前馈控制、反馈控制等来实现水分实时监测和闭环自动调节的水分自动控制系统。主要从硬件组成及工作原理、设计、应用效果等方面对该系统进行了阐述,并对其在柳钢3~#360 m^2烧结机的应用情况进行了介绍。该系统投入使用后,水分目标值稳定率(±0.2%)由85.3%提高到95.7%,烧结矿转鼓指数稳定率(>75%)由95.6%提高到98.9%,FeO稳定率(±1.0%)由96.7%提高到了98.8%,利用系数由1.478t/(m^2·h)提高到了1.537t/(m^2·h),有效地减少了混合料水分的波动,改善了烧结矿的产、质量指标。 展开更多
关键词 烧结 混合料 水分 自动控制 开发及应用
Effects of seed mixture sowing with transgenic Bt rice and its parental line on the population dynamics of target stemborers and leafrollers, and non-target planthoppers
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作者 Zhuo Li Li-Kun Li +3 位作者 Bin Liu Long Wang Megha N. Parajulee Fa-Jun Chen 《昆虫科学:英文版》 SCIE CAS CSCD 2019年第4期777-794,共18页
The widespread planting of insect-resistant crops has caused a dramatic shift in agricultural landscapes, thus raising concerns about the potential impacts on both target and non-target pests. In this study, we examin... The widespread planting of insect-resistant crops has caused a dramatic shift in agricultural landscapes, thus raising concerns about the potential impacts on both target and non-target pests. In this study, we examined the potential effects of intra-specific seed mixture sowing with transgenic Bt rice (Bt) and its parental non-transgenic line (Nt)(100% Bt rice [Bt100], 5% Nt+95% Bt [Nt05Bt95], 10% Nt+90% Bt [Nt|0Bt90], 20% Nt+80% Bt [Nt2oBtso], 40% Nt+60% Bt [Nt4oBt6O] and 100% Nt rice [Ntjoo]) on target and non-target pests in a 2-year field trial in southern China. The occurrence of target pests, Sesamia inf evens. Chilo suppressalis and Cnaphalocrocis medinalis, decreased with the increased ratio of Bt rice, and the mixture ratios with more than 90% Bt rice (Btjoo and Nt()5Bt95) significantly increased the pest suppression efficiency, with the lowest occurrences of non-target planthoppers, Nilaparvata lugens and Sogatella jurcijera in Ntioo and NtosBtgs. Furthermore, there were no significant differences in 1000?grain dry weight and grain dry weight per 100 plants between Btjoo and NtosBtgs,Seed mixture sowing of Bt rice with <10%(especially 5%) of its parent line was sufficient to overcome potential compliance issues that exist with the use of block or structured refuge to provide most effective control of both target and non-target pests without compromising the grain yield. It is also expected that the strategy of seed mixture sowing with transgenic Bt rice and the nontransgenic parental line would provide rice yield stability while decreasing the insecticide use frequency in rice production. 展开更多
关键词 cultivar diversity occurrence and damage seed mixture SOWING TARGET and non-target pests TRANSGENIC Bt rice yield
Extending the EMMS/bubbling model to fluidization of binary particle mixture:Formulation and steady-state validation
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作者 Nouman Ahmad Yujie Tian +3 位作者 Bona Lu Kun Hong Haifeng Wang Wei Wang 《中国化学工程学报:英文版》 SCIE EI CAS CSCD 2019年第1期54-62,共9页
The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this study.The dense and dilute phases are considered to comprise of two... The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this study.The dense and dilute phases are considered to comprise of two types of particles differing in size and/or density.Governing equations and the stability condition are then formulated and solved by using an optimization numerical scheme.The effects of bubble diameter are first investigated and a suitable bubble diameter correlation is chosen.Preliminary validation for steady state behavior shows the extended model can fairly capture the overall hydrodynamic behaviors in terms of volume fraction of bubbles and average bed voidage for both monodisperse and binary particle systems.This encourages us to integrate this model with CFD for more validations in the future. 展开更多
关键词 EMMS BINARY mixture FLUIDIZATION MESOSCALE structure
高速公路Superpave路面施工中的应用要点 预览
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作者 李岩青 《山西建筑》 2019年第7期158-160,共3页
对Superpave设计方法与马歇尔设计方法进行了比较,介绍了Superpave混合料的特性和优势,分析了Superpave混合料在拌制、铺摊、碾压等各工序中质量控制的要点,说明了该路面具有的良好路用性能,是解决路面早期损坏特别是车辙病害的有效途径。
关键词 SUPERPAVE路面 混合料 碾压
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冷拌环氧沥青混合料路用性能的室内试验
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作者 王俊彦 李洋 +3 位作者 顾帆 杨梦林 陈东风 顾伟峰 《材料科学与工程学报》 CAS CSCD 北大核心 2019年第2期296-299,338共5页
通过室内试验研究了三种国产冷拌环氧沥青胶结料的粘度-时间变化规律和力学性质,以及混合料的高低温性能、抗水损害和疲劳性能等路用性能。研究结果表明,冷拌环氧沥青胶结料性能优良,其混合料具有优良的路用性能,适合钢桥面铺装。
关键词 公路钢桥面铺装 冷拌环氧沥青 混合料 力学性质 路用性能
1D TOCSY技术应用于氨基醇混合物的选择性检测
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作者 张何 黄桂兰 袁铃 《分析试验室》 CAS CSCD 北大核心 2019年第2期222-229,共8页
对一维全相关谱(1D TOCSY)技术分析高背景干扰下3种痕量氨基醇混合物(三乙醇胺、N-甲基二乙醇胺、2-二异丙基氨基乙醇)进行了研究。优化了脉冲序列、整形脉冲、混合时间等关键实验参数,实现对3种痕量氨基醇化合物相关峰的指认和结构鉴定... 对一维全相关谱(1D TOCSY)技术分析高背景干扰下3种痕量氨基醇混合物(三乙醇胺、N-甲基二乙醇胺、2-二异丙基氨基乙醇)进行了研究。优化了脉冲序列、整形脉冲、混合时间等关键实验参数,实现对3种痕量氨基醇化合物相关峰的指认和结构鉴定,方法检测限为5μg/mL。在三乙醇胺的氢谱信号完全被掩盖或干扰的情况下,讨论了利用1D TOCSY定量分析三乙醇胺的可行性。将建立的1D TOCSY方法成功应用于国际禁止化学武器组织(OPCW)第42次水平考试的盲样分析。与1D NOESY方法相比,1D TOCSY方法在实现选择性检测的同时,具有更高的检测灵敏度,有利于痕量分析。 展开更多
关键词 选择性激发 一维全相关谱 氨基醇 混合物
Intertidal area classification with generalized extreme value distribution and Markov random field in quad-polarimetric synthetic aperture radar imagery
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作者 Ting-ting JIN Xiao-qiang SHE +1 位作者 Xiao-lan QIU Bin LEI 《信息与电子工程前沿:英文版》 SCIE EI CSCD 2019年第2期253-264,共12页
Classification of intertidal area in synthetic aperture radar(SAR) images is an important yet challenging issue when considering the complicatedly and dramatically changing features of tidal fluctuation. The difficult... Classification of intertidal area in synthetic aperture radar(SAR) images is an important yet challenging issue when considering the complicatedly and dramatically changing features of tidal fluctuation. The difficulty of intertidal area classification is compounded because a high proportion of this area is frequently flooded by water, making statistical modeling methods with spatial contextual information often ineffective. Because polarimetric entropy and anisotropy play significant roles in characterizing intertidal areas, in this paper we propose a novel unsupervised contextual classification algorithm. The key point of the method is to combine the generalized extreme value(GEV) statistical model of the polarization features and the Markov random field(MRF) for contextual smoothing. A goodness-of-fit test is added to determine the significance of the components of the statistical model. The final classification results are obtained by effectively combining the results of polarimetric entropy and anisotropy. Experimental results of the polarimetric data obtained by the Chinese Gaofen-3 SAR satellite demonstrate the feasibility and superiority of the proposed classification algorithm. 展开更多
关键词 INTERTIDAL CLASSIFICATION Polarimetric synthetic APERTURE radar Finite MIXTURE MODEL Markov random field Generalized extreme value MODEL
西瓜枯萎病病原菌鉴定及药剂联合增效作用 预览
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作者 王开成 《湖北农业科学》 2019年第14期59-61,82共4页
采用PDA培养基和PD培养基,对西瓜病株病原菌进行分离、培养,经致病性测定,形态学及r DNA-ITS测序,鉴定其致病菌为尖孢镰刀菌(Fusarium oxysporum)。采用菌丝生长速率法测定85%氨基寡糖素和97%咪鲜胺对西瓜尖孢镰孢菌的共毒系数。结果显... 采用PDA培养基和PD培养基,对西瓜病株病原菌进行分离、培养,经致病性测定,形态学及r DNA-ITS测序,鉴定其致病菌为尖孢镰刀菌(Fusarium oxysporum)。采用菌丝生长速率法测定85%氨基寡糖素和97%咪鲜胺对西瓜尖孢镰孢菌的共毒系数。结果显示,85%氨基寡糖素∶97%咪鲜胺=3∶1时,增效作用最好,共毒系数为167.88,对西瓜枯萎病菌菌丝具有很好的抑制效果。 展开更多
关键词 西瓜枯萎病菌(Fusarium oxysporum) 杀菌剂 联合作用 混配
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微腔对含单个费米子杂质Bose-Josephson结隧穿动力学的影响
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作者 雷林霖 谭磊 《量子光学学报》 北大核心 2019年第1期73-79,共7页
本文研究含有一个费米子杂质的玻色爱因斯坦凝聚体在光学微腔作用下的隧穿动力学性质,探讨腔对单粒子隧穿过程的影响。从光学微腔与双阱中玻色子-费米子混合凝聚体耦合体系的哈密顿量出发,推导出与光学腔耦合强度有关的粒子隧穿基态能... 本文研究含有一个费米子杂质的玻色爱因斯坦凝聚体在光学微腔作用下的隧穿动力学性质,探讨腔对单粒子隧穿过程的影响。从光学微腔与双阱中玻色子-费米子混合凝聚体耦合体系的哈密顿量出发,推导出与光学腔耦合强度有关的粒子隧穿基态能级差的解析表达式以及相对粒子数差的期望值。研究结果表明:光学腔与原子的耦合强度能够影响优先隧穿的粒子种类以及粒子隧穿的阶梯图形。 展开更多
关键词 光学微腔 玻色子 费米子 混合物 隧穿动力学
不同润湿剂对陶瓷结合剂CBN砂轮成型料性能的影响 预览
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作者 李鹤南 王志起 +3 位作者 刘宾 孙鹏辉 王朝富 席耀辉 《金刚石与磨料磨具工程》 CAS 北大核心 2019年第1期27-30,共4页
润湿剂直接影响陶瓷结合剂CBN砂轮成型料的可成型性,进而影响砂轮组织的均匀性。实验以糊精液作对比,探讨聚乙烯醇缩丁醛(PVB)乙醇溶液、聚丙烯酰胺(PAM)水溶液、聚乙二醇(PEG–6000)水溶液、异丁烯–马来酸酐共聚物(ISOBAM–110)水溶液... 润湿剂直接影响陶瓷结合剂CBN砂轮成型料的可成型性,进而影响砂轮组织的均匀性。实验以糊精液作对比,探讨聚乙烯醇缩丁醛(PVB)乙醇溶液、聚丙烯酰胺(PAM)水溶液、聚乙二醇(PEG–6000)水溶液、异丁烯–马来酸酐共聚物(ISOBAM–110)水溶液4种新型润湿剂对陶瓷结合剂CBN砂轮成型料混合均匀性、松装密度、湿坯强度和组织均匀性的影响。结果表明:ISOBAM–110水溶液和PAM水溶液所混成型料均匀一致,各项性能较糊精液均有明显改善,二者松装密度较糊精液的分别提升46.59%和51.14%,湿坯强度分别提升17.71%和35.08%,砂轮不均匀率分别降低23.75%和8.75%。 展开更多
关键词 润湿剂 陶瓷结合剂CBN砂轮 成型性能 成型料
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EGCG复配微乳液的抗氧化活性研究
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作者 王伟伟 江和源 +2 位作者 张建勇 苏威 施莉婷 《食品科技》 CAS 北大核心 2019年第3期256-260,共5页
研究以EGCG微乳为原料,以单因素试验为基础,考察不同的复配剂种类、复配剂浓度和复配温度,分析各因素对EGCG微乳抗氧化和清除自由基活性的影响。结果表明:EGCG微乳的较佳复配剂为没食子酸丙酯,复配剂浓度为(0.01~0.1)mg/mL时微乳液的总... 研究以EGCG微乳为原料,以单因素试验为基础,考察不同的复配剂种类、复配剂浓度和复配温度,分析各因素对EGCG微乳抗氧化和清除自由基活性的影响。结果表明:EGCG微乳的较佳复配剂为没食子酸丙酯,复配剂浓度为(0.01~0.1)mg/mL时微乳液的总抗氧化能力呈线性提高趋势,在(25~65)℃时复配温度对EGCG微乳液的总抗氧化能力无显著影响。综上所述,复配工艺是EGCG扩大应用范围的有效方式,优选复配剂能够提高EGCG微乳的抗氧化和清除自由基活性。 展开更多
关键词 微乳 复配剂 没食子酸丙酯 总抗氧化能力
烧结混合机各功能区的研究与优化 预览
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作者 包文琦 《山东冶金》 CAS 2019年第3期6-7,共2页
针对莱钢烧结生产中混匀料的水分受季节性影响较大的现状,根据混匀料水分状况,合理优化混合机内3个功能区的位置分布,使混匀料和其他矿料充分混匀,烧结矿质量更加稳定,取得了较好的效果。
关键词 烧结混合机 混合料 水分 混匀
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