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extinguishing mechanism    
相关语句
  灭火机理
    Through determination of relations of different intermixtures to parameters,such as foaming multiple,time for 90% of flame control,extinguishing time,time for anti-fever and others, the extinguishing mechanism was defined.
    通过测定不同混合液与粘度、沉淀物、发泡倍数、90%火焰控制时间、灭火时间、抗烧时间等灭火指标的关系,分析了剩余污泥水解液的灭火机理
短句来源
  灭火机理
    Through determination of relations of different intermixtures to parameters,such as foaming multiple,time for 90% of flame control,extinguishing time,time for anti-fever and others, the extinguishing mechanism was defined.
    通过测定不同混合液与粘度、沉淀物、发泡倍数、90%火焰控制时间、灭火时间、抗烧时间等灭火指标的关系,分析了剩余污泥水解液的灭火机理
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  extinguishing mechanism
Fire-extinguishing mechanism and energy procedure by high velocity airflow
      
The reason for this is that the primary extinguishing mechanism is the evaporation of the droplets in the flame zone.
      
The extinguishing mechanism that dominates varies with the type of fuel involved and the ventilation conditions.
      
The extinguishing mechanism by which the halons extinguish fires is not yet fully understood.
      
The fire may also be extinguished by cooling the fuel, but as with class A fires, this is not the main extinguishing mechanism of water mist.
      
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The effects of povidone-iodine and isothiozolone on the Phaeocystis globosa's chlorophyl α, protein and SOD enzyme were studied, and the modality of the algae cell was observed by SEM to understand the extinguishing mechanism of algaecide. The result showed that povidone-iodine and isothiozolone can react with the Phaeocystis globosa's chlorophyl α, protein and SOD enzyme to destroy the metobolism of the cell and kill the cell.

 通过研究碘伏和异噻唑啉酮对球形棕囊藻叶绿素α、蛋白质和超氧物歧化酶(SOD)的影响,并使用扫描电子显微镜观察棕囊藻的形态结构的破坏情况,初步探讨了这两种除藻剂单独作用和复配使用时灭杀球形棕囊藻的机理.实验研究结果表明,碘伏和异噻唑啉酮通过与藻类的叶绿素、蛋白质和酶等反应,使细胞代谢异常,从而杀死藻体.

Cupric glutamate was studied as a novel algicide for marine harmful algae and hexadecyltrimethyleamine bromide(HDTMAB) as an accelerant.The studies on the extinguishment of Alexandrium sp.by cupric sulfate or cupric glutamate showed that cupric glutamate had a higher extinguishing rate than cupric sulfate.Cupric glutamate had an excellent ability to inhibit the growth of Alexandrium sp.,but the inhibition efficiency did not increase with higher cupric glutamate concentration.HDTMAB could stimulate the extinguishments...

Cupric glutamate was studied as a novel algicide for marine harmful algae and hexadecyltrimethyleamine bromide(HDTMAB) as an accelerant.The studies on the extinguishment of Alexandrium sp.by cupric sulfate or cupric glutamate showed that cupric glutamate had a higher extinguishing rate than cupric sulfate.Cupric glutamate had an excellent ability to inhibit the growth of Alexandrium sp.,but the inhibition efficiency did not increase with higher cupric glutamate concentration.HDTMAB could stimulate the extinguishments by cupric glutamate obviously.There was a positive correlation between concentration of HDTMAB and increasing effect.Study of the mechanism of the extinguishment of Alexandrium sp.showed that cupric glutamate stimulated the production of MDA and reduced the content of sulfhydryl group.The lipid peroxidation level in cells was higher under cupric glutamate-surfactant joint operation than cupric glutamate alone.In addition of the content of sulfhydryl group decreased significantly,plasma membrane permeability of leaked cell solution was increased.These indicated the extinguishing mechanism: the cell membrane was damaged followed by the inhibition of the cell growth.

对一种新的赤潮杀灭剂谷氨酸铜及促进剂阳离子表面活性剂十六烷基三甲基溴化铵(HDT-MAB)进行了初步研究.比较了硫酸铜及谷氨酸铜对亚历山大藻的去除效果;结果表明,谷氨酸铜对亚历山大藻的灭杀效率优于硫酸铜,谷氨酸铜可明显抑制亚历山大藻细胞的生长,但抑制作用并不随谷氨酸铜浓度加大而增强,HDTAMB可明显促进谷氨酸铜对亚历山大藻的去除,且促进作用基本随着HDTMAB浓度的提高而增强.对谷氨酸铜和HDTMAB杀灭赤潮的机制进行了初步探讨;研究发现,谷氨酸铜可促使藻细胞MDA含量升高,并使巯基含量下降,且在谷氨酸铜和HDT-MAB复合作用下,膜脂过氧化水平大大高于单纯谷氨酸铜作用下的水平,细胞中巯基含量显著降低,细胞膜透性增大,这表明谷氨酸铜和HDTMAB杀灭赤潮的机制是使藻细胞膜受到损伤,进而抑制藻细胞生长.

Excess sludge in a wastewater treatment plant in Wuhan was used as the material for research.The sludge was hydrolyzed by the acids and alkalis with different concentrations in different periods of time to obtain the intermixture which includes hydrolysis protein,fatty acid,carbohydrate and other soluble organic and inorganic materials.The protein content in different intermixtures was determined.The best conditions of hydrolyzing excess sludge were acquired.Experiments indicate that the technique of hydrolyzing...

Excess sludge in a wastewater treatment plant in Wuhan was used as the material for research.The sludge was hydrolyzed by the acids and alkalis with different concentrations in different periods of time to obtain the intermixture which includes hydrolysis protein,fatty acid,carbohydrate and other soluble organic and inorganic materials.The protein content in different intermixtures was determined.The best conditions of hydrolyzing excess sludge were acquired.Experiments indicate that the technique of hydrolyzing excess sludge by NaOH is not feasible because hydrolysis fluid can not be filtered.HCl can hydrolyze excess sludge and its hydrolysis is the most effective at pH of 1.0 with protein content of(59.2)%,but its foaming multiple is smaller at the same time.CaO can hydrolyze excess sludge and the foaming multiple of protein intermixture is higher,but the time of hydrolysis takes longer with low protein content.Excess sludge can be best hydrolyzed by the techniques of CaO(25%) and NaOH(5%).The protein content in the intermixture is higher,and the time of hydrolysis is shorter.The study also shows that the shorter the hydrolysis time of intermixture,the higher the foaming multiple.Through determination of relations of different intermixtures to parameters,such as foaming multiple,time for 90% of flame control,extinguishing time,time for anti-fever and others, the extinguishing mechanism was defined.Hydrolysis protein of excess sludge can be used for preparing foam extinguishing agent,and its extinguishing parameters can reach the national standard(GA 219-1999).The technology can achieve the reuse of excess sludge,thus avoiding the secondary pollution of excess sludge and the environmental pollution from chemical extinguishing agents.

以武汉市某污水处理厂的剩余污泥为材料,在不同酸、碱浓度以及不同时间条件下对其进行水解,以制备含水解蛋白质、脂肪酸、糖类等可溶性有机物及无机物的混合液,并分析、测定了所制备混合液的蛋白质含量,探讨了影响剩余污泥水解的因素。试验结果表明,当采用NaOH水解剩余污泥时,所产水解液为膏状,不能过滤,因而不适合采用;而HC l可水解剩余污泥,且pH值为1.0时的水解效果最好,蛋白质含量高(59.2%),但所制备的蛋白质混合液的发泡倍数相对较小(7.0倍);CaO水解剩余污泥的效果较好,所制备蛋白质混合液的发泡倍数较高(7.6倍),但所需时间较长,且蛋白质含量不高、CaO用量较大;将CaO(25%,相对于干污泥的投加量)与NaOH(5%,相对干污泥的投加量)混合使用的效果最好,不仅水解时间短,而且所得水解液可过滤、蛋白质含量高。经过测定同一蛋白质样品在不同水解时间下的灭火参数发现,水解时间越短则其发泡倍数越高。通过测定不同混合液与粘度、沉淀物、发泡倍数、90%火焰控制时间、灭火时间、抗烧时间等灭火指标的关系,分析了剩余污泥水解液的灭火机理。结果表明,剩余污泥水解液属于空气泡沫灭火剂,其灭火指标达到了国家标准(GA 219...

以武汉市某污水处理厂的剩余污泥为材料,在不同酸、碱浓度以及不同时间条件下对其进行水解,以制备含水解蛋白质、脂肪酸、糖类等可溶性有机物及无机物的混合液,并分析、测定了所制备混合液的蛋白质含量,探讨了影响剩余污泥水解的因素。试验结果表明,当采用NaOH水解剩余污泥时,所产水解液为膏状,不能过滤,因而不适合采用;而HC l可水解剩余污泥,且pH值为1.0时的水解效果最好,蛋白质含量高(59.2%),但所制备的蛋白质混合液的发泡倍数相对较小(7.0倍);CaO水解剩余污泥的效果较好,所制备蛋白质混合液的发泡倍数较高(7.6倍),但所需时间较长,且蛋白质含量不高、CaO用量较大;将CaO(25%,相对于干污泥的投加量)与NaOH(5%,相对干污泥的投加量)混合使用的效果最好,不仅水解时间短,而且所得水解液可过滤、蛋白质含量高。经过测定同一蛋白质样品在不同水解时间下的灭火参数发现,水解时间越短则其发泡倍数越高。通过测定不同混合液与粘度、沉淀物、发泡倍数、90%火焰控制时间、灭火时间、抗烧时间等灭火指标的关系,分析了剩余污泥水解液的灭火机理。结果表明,剩余污泥水解液属于空气泡沫灭火剂,其灭火指标达到了国家标准(GA 219—1999)。此技术可实现剩余污泥的再利用,既避免了剩余污泥的二次污染,又可克服使用化学泡沫灭火剂时对环境的污染。

 
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