挥发的
- 与 挥发的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The structure and morphology of CNTs which have been purified and not yet, were characterized by TEM, SEM, XRD, Raman, TG-DTA, BET, IR. The results indicated that when the stokehole reaction temperature was 1170℃,the decompose temperature of Ferrocene was 150℃,he volatilize temperature of Benzene was 50 ℃, hydric flow rate was 270ml/min, the concentration of thiophene was 1% and the reaction time was 20 minutes, the CNTs with single-walled and multi-walled were prepared. The diameters of the single-walled CNTs are in the range of 0.08~1.15nm, and that of the multi-walled CNTs are in the range of 40~120nm.
结果表明:炉膛反应温度1170℃、二茂铁的分解温度150℃、苯的挥发温度50℃、氢气的流量270ml/min、吩体积分数1.00/100ml苯、反应时间20min时,可以得到碳纳米管,既有单壁管又有多壁管,单壁管的内径分布在0.881.15nm之间,多壁管的直径分布在40120nm之间;纯化后的碳纳米管比表面积增加,管壁光滑,而且产生了大量的含氧官能团,有利于在水溶液中的分散。
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The AVS-SEM distribution in the sediments of Guanting Reservoir and Yongding River was studied and the metal concentration in the water above the sediments and the pore water was measured. Based on the results, the reaction between the sediments and metal ions were discussed and the heavy metal pollution of the sediments in Guanting Reservoir and Yongding River was evaluated preliminarily.
官厅水库沉积物,由于处于缺氧性环境,沉积物中的酸可挥发性硫化物控制着大多数金属离子在沉积物和孔隙水两相间的分配,本文通过现场采样,分析了官厅水库和永定河沉积物中的AVS—SEM的分布,同时测定了沉积物上覆水以及部分样点的孔隙水中的重金属浓度,探讨了沉积物与重金属离子的作用;并根据采样分析结果对官厅水库及永定河沉积物中的重金属污染做了初步评价。
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Electroantennogram responses to several chemical volatiles of soybean plant were investigated for the following four species of insects: 1 Aphis craccivora Koch and Macrosiphum avenae; 2 Lysiphlebus fabarum Marshall, the common nature enemy of Aphis glycines Matsumura which is the pest insect of soybean plant, and of A.craccivora which is not the pest insect of soybean plant; 3 Aphidius picipes Nees, the nature enemy of M.avenae which is not the pest insect of soybean plant.
研究了下列害虫和寄生天敌种类对大豆植株中提取的某些挥发性次生化合物及其不同组合混合相的触角电位反应: 1豆蚜Aphis craccivora Koch和麦长管蚜Macrosiphum avenae;2为害大豆植株的大豆蚜Aphis glycines Matsumura和不为害大豆植株的豆蚜二者所共有的寄生天敌豆柄瘤蚜茧蜂Lysiphlebus fabarum Marshall; 3不为害大豆植株的麦长管蚜的寄生天敌燕麦蚜茧蜂Aphidius picipes Nees。
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The steam distillation. 2.Rotary evaporation distillation, 3.supercritical extraction for the extraction of volatile oil oriental arborvitae, the experiment results showed, 1.the best conditions for the extraction by rotary evaporation are NG:water:ethanol=l:4:4 sawdust under the conditions 50 ° C in temperature, atmospheric pressure 0.1 Pa, extract maximum extraction rate of 90 minutes.
对不同方法提取得到的侧柏挥发性物质的粗提物进行了的触角电位测定和行为测定,确定了利用水蒸气蒸馏、旋转蒸发蒸馏、超临界萃取三种方法进行侧柏挥发油的提取,并通过试验得到旋转蒸发仪萃取的最佳方法为:在木屑:水:乙醇=1:4:4;50℃温度;0.1个大气压的条件下,提取90min的提取率最高。
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The results showed that most of the microbes could be inactivated for the ultra high pressure treatment, the accumulation of total volatile basic nitrogen was restrained, and the change of pH value was delayed. The shelf life of white shrimp was prolonged with the enhancement of high pressure. High pressure treatment could make fresh shrimp with boiled flavor in some degree. Trements of 400 Mpa and 600 MPa aggravated blackening. However, melanotic reaction was not observed during the whole storage of shrimp treated by 700 MPa. High pressure could change the metabolizing of ATP and its metabolites, but did not impact the metabolic pathway of AMP decomposition.
结果表明:超高压处理可以有效地杀灭南美白对虾中绝大多数微生物,抑制贮藏过程中挥发性盐基氮的积累,延缓pH值的变化,从而延长南美白对虾的货架期,且处理压力越高延长效果越显著;超高压处理会给鲜虾带来不同程度上的煮熟虾的风味;400 MPa和600 MPa处理使虾在冷藏过程的黑变提前,而700 MPa处理可以完全抑制南美白对虾黑变现象的发生;超高压能够改变腺苷三磷酸及其代谢产物的代谢情况,但不影响腺苷酸的代谢途径。
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The mechanical properties of coal filled polymer composites The mechanical properties of coal/PP composites were investigated, and the effects of coal rank, particle size, surface modification of coupling and alkylation were discussed. The results show that the anthracite and bituminous coal all can be used as filler of plastic after pretreatment of part devolatilization and surface modification; The modulus of composites increase with the content of coal filler; The coupling agent is of no effect for reinforcing the coal/PP composites, except that there are new oxygenous function group forming on the surface in the process of pulverizing; The F-C alkylation reinforce coal (under 10μm)/PP composites obviously.
4煤填充高分子复合材料力学性能超细煤粉填充聚丙烯复合材料力学性能的研究结果表明,烟煤和无烟煤经过脱除部分挥发分的预处理后,都可用于与塑料共混制备复合材料;偶联剂改性对低变质程度烟煤/聚丙烯复合材料的力学性能基本不起改善作用,而对于经气流超细粉碎后的小粒径高变质程度烟煤及无烟煤则有一定的增强作用;烷基化改性在煤表面接枝了烷基,使平均粒径小于10μm的煤/聚丙烯复合材料拉伸屈服强度普遍提高,煤填充高分子复合材料可在较高含煤量情况下维持良好的力学性能。
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The pyrogenation relationship equation among staying time, temperature and the rate of volatile is acquired.
数值分析固态医疗垃圾在SMW-CFBC燃烧时,首次采用关联矩模型和PDF模型相结合的模型来确定存在组分浓度脉动、温度和反应度脉动情况下紊流燃烧速率,同时,考虑垃圾颗粒的挥发析出反应所引起的变质量对流体或气相中湍流的作用,颗粒变质量过程对气相中湍流反应的影响;有反应的颗粒相自身的影响问题;湍流对颗粒反应的影响。
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Flame retardants may interrupt or change the decomposition process in several ways:(1)they may melt at relatively low temperatures and resolidify in the form of a foam, which serves as a barrier to heat transfer from the flame to the substrate;(2) they may be converted upon heating into acids or bases, which catalyze the decomposition of the substrate at lower temperatures than are required for the formation of volatile combustibles;(3 ) they may decompose orsublime upon heating to release large amounts of nonflammable vapors which exclude oxygen from the flame; or (4) they may react with chemicakl species within the flame to stop the combustion reaction.
阻燃剂可以从几个方面干涉或改变织物的分解过程:(1)阻燃剂在相对较低的温度时会熔化,然后重新固化成泡沫状,这样就形成了一个屏障,阻止了从火焰向织物的热传递。(2)阻燃剂受热时会分解成酸或碱,这些酸或碱在低于可生成挥发性可燃物的温度下可以催化织物的分解。(3)阻燃剂在受热时会分解或升华,同时释放出大量不可燃气体,这就阻止了氧气对火焰的供应。(4)阻燃剂可以与火焰中的化学物质起反应,使燃烧反应终止。
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In oxygen deficient high temperiture combustion, the amount of volatic material evolved influene the conversion of sulfur in coal, high volatile content restrains the oxidation of pyrite and iron sulfide , which causes compavatively large amount of iron sulfide left in char. At the condition of air coefficient α=0.4, the sulfur conversion is up to 87% for SHONGZHAO anthracite coal, 72% for FORGCHANG bituminous coal, and the conversion is compeleted within 0.5 see.
在高温贫氧状态下燃烧,煤中硫的释出率高于煤的燃烧率,高挥发份将抑制黄铁矿的氧化释放出来,即影响煤中硫的释出率,在过量空气系数为40%时,松澡无烟煤能达到87%的硫的释出率,丰城烟煤达到72%的硫的释出率。
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The SPC-2S fraction with 30% EtOH were constituted epicatechin and epicatechin gallate ester ;The SPC-2S fraction with 50% EtOH contained epicatechin and dimeric procyanidins, another SPC-3S contained epicatechin ,dimeric procyanidins and trimeric procyanidns ;Dimeric procyanidins and trimeric procyanidns constitute SPC-5S fraction;monomer dimer trimer tetramer pentamer of procyanidins were the major fractions in 70% acetone elute solution.
1和 2.01:1,也以添加0.1%SPC酒样中两者的比例最为协调;对小曲酒中酸的影响表现为,添加SPC后有利于降低酒样中乙酸的含量,各酒样中乙酸的量随着SPC添加量高粱外种皮中原花青素及其对小曲白酒挥发性成分影响机制研究的增加而降低;对醛类的影响为,添加SPC可降低酒样中糠醛的含量,其中以添加 0.1%SPC酒样中含量最低,为对照组的39.3%,而4个酒样中乙醛含量则无明显差别;低SPC添加量有降低酒样中杂醇油含量的趋势。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。