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yield     
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  收率
    The up-sizing technology of supercritical CO2 extraction of grape seed oil was studied in this paper. The optimizing technical parameters are: extracting pressure at 25 MPa,extracting temperature at 45℃,CO2 flow rate at 40 kg/h. the extraction yield is 8.92%,which is less than the result of lab.
    本文对超临界CO2萃取葡萄籽油的放大工艺进行了研究,其中试优化工艺参数为萃取压力25MPa,萃取温度为45℃,CO2流量为40kgCO2/h,葡萄籽油的萃取收率为8.92%,较小试有所下降。
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    Results:The colour value of purple cabbage pigment could reach(E1%1cm520nm)87.06,the yield is 0.27%.
    结果:按本实验确定的工艺,制得紫甘蓝色素色价(E11%cm520nm)为87.06,固形物收率为0.27%。
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    The yield of SE in this process was higher than 78% and the total ester content was above 91%.
    该工艺合成SE收率在78%以上,SE总酯质量分数在91%以上。
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    The extraction techniques of SOD(cell wall broken by isopropyl alcohol and secondary purification by propanone) were investigated. The best extraction conditions were as follows: 90 % isopropyl alcohol concentration,extraction time 120 min,pH value as 7.0,the yield of crude enzyme liquid as 73 %,and the specific enzymatic activity of SOD was 3048.7 u/mg.
    研究了利用异丙醇破壁、丙酮二次纯化提取SOD生产工艺,最佳提取条件为:异丙醇浓度为90%、时间120min、pH7.0,粗酶液的收率为73%,所得SOD的酶比活为3048.7u/mg。
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    The optimal conditions were: material quantity105 kg, temperature 170 ℃, spray rate 3.5 kg/h , and under these conditions the yield of protein powder was 96 %.
    通过实验得到最佳工艺条件为:投料量105kg、热风入口温度170℃、卵磷脂溶液喷雾速度3.5kg/h,在此条件下蛋白粉造粒的收率为96%。
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    The factors of time, temperature which influence saponification were simply studied. The optimum conditions for saponification: 1h, 60℃. Under these conditions, a fatty acid yield of 93.2% was obtained, and the product contained 5.72% EPA, 10.55% DHA and 4.83% DPA.
    研究了3种因素即皂化时间、乙醇/水(v/v)比例和皂化温度对海狗油皂化效果的影响,结果显示较好的皂化条件为皂化时间1h、乙醇/水(v/v)比例6∶1、皂化温度60℃,在此条件下脂肪酸的产率为93.2%,其中含EPA5.72%、DHA10.55%和DPA4.83%。
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    The optimum conditions were reaction temperature 37℃, pH 4.5~5.5, the concentration of LA 0.1%, inoculation dosage 5%~7% and incubation time 24h. Under the optimum conditions the yield of CLA was 31.2%.
    其优化条件为:培养温度37℃、pH值4.5~5.5、LA浓度0.1%、接种量5%~7%、培养时间24h,此时CLA产率达31.2%。
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    By microwave radition,the proper condition of extracting pectin from the passion skin were as follows:the ratio of solvent to material was 15mL/g,and then extracted 3.5min with microwave radiation under 320W at pH2.5.The yield was got 2.84%.
    通过正交实验确定最佳工艺条件为:液料比15mL/g,微波功率320W,微波提取时间3.5min,pH2.5。 在此条件下,果胶产率为2.84%
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    The compositions of essential oil from the aerial parts of coriander by the ultrasound extraction(UE) in ethyl ether as solvent in 0.284% yield were analyzed by GC-MS,and 70 components were identified,which accounting for 93.634% of total oil.
    以乙醚为溶剂,采用超声波法萃取香菜,以0.284%产率获得了香菜芳香精油,用GC-MS对精油进行了成分分析,解析出70种物质,占精油93.634%。
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    Studies on the relationship between the yield maltase and liquefaction degree of starch
    麦芽糖产率与淀粉液化程度关系的研究
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    Study on High Yield Pulp Reinforced Polyamide Resin Composite
    高得纸浆增强聚酰胺树脂复合材料的研究
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    Scientific Design and Follow-up Management Bring Trial Reeling Closer to the Unit Yield Cocoon Consumption
    科学设计跟踪管理提高缫折试实缫符合
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    STUDY ON FREEZE CRYSTALLIZATION TREATMENT OF EFFLUENT FROM HIGH YIELD PULPING
    高得浆废水冷冻结晶处理研究
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    A Study on the Napole Yield of Pork
    猪肉拿破的研究
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    Steam Explosion High Yield Pulping of Aspen
    汽蒸爆破法制杨木高得
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  得率
    Study on High Yield Pulp Reinforced Polyamide Resin Composite
    高得率纸浆增强聚酰胺树脂复合材料的研究
短句来源
    STUDY ON FREEZE CRYSTALLIZATION TREATMENT OF EFFLUENT FROM HIGH YIELD PULPING
    高得率浆废水冷冻结晶处理研究
短句来源
    Steam Explosion High Yield Pulping of Aspen
    汽蒸爆破法制杨木高得率
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    Review of the Technology of Producing Sack Paper with High Yield Kraft Pulp
    KP高得率木浆生产纸袋纸的技术
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    After enzymatic treatment by adding neutral proteinase,the protein content could be effectively decreased. Under the conditions of enzyme addition 48 AU/kg,temperature 50℃,pH 7,ratio of solvent to material 1:50 and time 60 min,the protein residue in the starch could be reduced to about 0.6% and the starch yield was 60.26%.
    经加中性蛋白酶处理后能有效地降低燕麦淀粉中残留蛋白质的含量,加酶量48 AU/kg,温度50℃,液固比6,pH值为7.0,时间60 m in时,燕麦淀粉中蛋白质的残留量可降为0.6%左右,淀粉得率60.26%。
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  yield
We also prove that some unimodular wavelets yield unconditional bases in Lp(?).
      
The same technique of proof is also applied to yield an existence result for A-dilation MRA subspace wavelets.
      
In most applications, it is this overcompleteness that is exploited to yield a decomposition that is more stable, more robust, or more compact than is possible using nonredundant systems.
      
This article shows that those abstract results yield an array of new implications for irregular Gabor frames.
      
The base-catalyzed condensation of thioureas (1-3a-i) with acetone was carried out in the presence of bromine to afford the corresponding 1-(isomeric methyl) benzoyl-3-aryl-4-methyl-imidazole-2-thiones (4-6a-i) in good yield.
      
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1. α-amylase, saccharifying enzyme, maltase and limit dextrinase have been tested in this research work. According to the results of more than 10 experiments, the following conclusions may be made: (a)Although Asp. oryzae, No. 7 possesses greatest liquifying power, the aleohol yield by using this mold as saccharifying agent is lowest among all the molds tested. It is obvious that, there is no direct relationship between α-amylase value and alcohol yield. (b) Maltase value of Asp. oryzae No.7 is much...

1. α-amylase, saccharifying enzyme, maltase and limit dextrinase have been tested in this research work. According to the results of more than 10 experiments, the following conclusions may be made: (a)Although Asp. oryzae, No. 7 possesses greatest liquifying power, the aleohol yield by using this mold as saccharifying agent is lowest among all the molds tested. It is obvious that, there is no direct relationship between α-amylase value and alcohol yield. (b) Maltase value of Asp. oryzae No.7 is much lower than that of other molds, for example, mal-tase value of Asp. niger, NRRL 330 is 7.24,while that of Asp. oryzae, No.7 is only 0.06. The alcohol yield of the latter is about 20% less than that of the former. in other words, the higher the maltase value, the higher the alcohol yield. This conclusion is obviously in agreement with previous investiga- tions. When the saccharifying value is high, the limit dextrinase value is also high. But the inter-relationship between limit dextrinase and alcohol yield requires further investigation. 2. Concerning the selection of mold suitable for submerged culture, Asp. niger, No. 2 is the best one, according to the results of 1st and 2nd period of our experiments; while Asp. niger, NRRL 330 isnext to Asp. niger No. 2. 3. Concerning the selection of culture medium, 3 kinds of media: (1) potato powder 8%, NaNO_2 0.3%, HCl (37%) 0.1%; (2) maize 5%, rice bran 1%, wheat bran 1.5%; (3) distillers solubles 3.5% maize 5%,(pH 5.0) have been adopted. Among these media, No. 2 is the best, No. 1 is next and No.3 is not suitable for Asp. niger, No. 2.

酒精的用途很大,无论在国防工业上、医药卫生上以及其他有关工业上都需要大量酒精。另一方面,我国土法制酒,淀粉利用率很低,因此,浪费大量粮食。最近中央倡议“白酒酒精化”,就是用酒精配制白酒,因为新法造酒的淀粉利用率较高,可以节约很多粮食。此后酒精工业对国民经济的关系更大,我们科学工作者的任务也更繁重。

As the result of a series of experiments, the following conclusions can be made: 1. The optimum pH of saccharifying enzyme and maltase of the submerged culture of Aspergillusniger, NRRL 330 is between 3 and 5 at the temperature below 60℃. At any value of pH, the optimumtemp. is 60℃. At higher temp. the sensitivity of these amylases toward pH will be greater. Beyondthe optimum pH range, the saccharifying enzyme and maltase are much more stable at the acid sidethan at the alkaline side. When pH is over 6, the...

As the result of a series of experiments, the following conclusions can be made: 1. The optimum pH of saccharifying enzyme and maltase of the submerged culture of Aspergillusniger, NRRL 330 is between 3 and 5 at the temperature below 60℃. At any value of pH, the optimumtemp. is 60℃. At higher temp. the sensitivity of these amylases toward pH will be greater. Beyondthe optimum pH range, the saccharifying enzyme and maltase are much more stable at the acid sidethan at the alkaline side. When pH is over 6, the activities of the saccharifying enzyme and maltasedecrease greatly; at pH 7, as the temp. increasing to 70℃, they almost lose their activities. 2. The optimum pH of the dextrinizing enzyme of the submerged culture of Asp. niger is alsobetween 3 and 5. The optimum temp. is 60-70℃. At the optimum pH, the dextrinizing enzyme increasesin direct proportion with the temp. Same as saccharifying enzyme its sensitivity toward pH increaseswhen the temp. is higher. 3. From the results of the experiments ncerning the thermal resistance of saccharifying enzymeof submerged-culture of Asp. niger and A. oryzae, we know that the thermal resistance of the formeris much stronger than that of the latter. When treated at 50℃ for 3 hrs, the saccharifying activity of A. niger lost only by 10%, whilethat of A. oryzae by 70%. When Asp. niger, NRRL 330 is treated at 60℃ for 1 hr., only 35% of thesaccharifying activity is lost; while at the same condition, 80% of the saccharifying activity of A. oryzaewill be lost. In the manufacture of alcohol, amylase which acquires stronger thermal resistance always givebetter results. If the thermal resistance of amylase is strong, the saccharifying temp. of the mash may be higher.Concerning this point the following advantages may be mentioned: (1) At higher temp. the decrease in the viscosity of the mash and the increase in the rate ofsaccharification are both favorable for the fermentation process. (2) Prevention of bacterial contamination at higher temp. of saccharification results higheralcohol yield. (3) Having acquired greater thermal resistance, the saccharifying enzyme during and after thesaccharification process will be negligibly destroyed, which in turn will not effect much of its effectiveness. 4. By using Kitahara's method of fractional quantitative analysis to decide the type of amylasescontaining in the submerged culture of A. niger and A. oryzae, the following results are obtained: At the value of pH 2.5, the saccharifying activity of A. oryzae is entirely lost, so the amylase ofA. oryzae may belong to α-type. Although the pH is lowered to 2.5, the liquifying power of A. niger, NRRL 330 is only slightlyeffected. In this case, A. niger, NRRL 330, perhaps contains an acid fast liquifying enzyme, which, onthe contrary, being destroyed at pH 7 (55℃), is different from the ordinary α-amylase. Moreover, the saccharifying enzyme of A. niger is only slightly effected at pH 7 (55℃). It isobvious that this amylase is not the same as the ordinary β-amylase. At pH7 (55℃ 15 min), ere is no great influence on maltase activity of A. niger. But this resultdiffers from Kitahara's report appreciably. From the above experiments, we can see that the acid resisting power of amylases of A. nigeris much stronger than that of A. oryzae.

由淀粉质原料制造酒精以液体麯为糖化剂时,对于液体麯所含各种淀发酶的特性,必须彻底明了,方能确定糖化所需的最适温度、时间与pH值,否则淀粉酶在制造过程中受到损害,结果将大大影响淀粉利用率。本试验中,黑麯霉以Asp.niger,NRRL 330为菌种,黄麯霉以Asp.oryzae,No.7为菌种。报告内容分为:Ⅰ温度、pH对于黑麯霉的液麯糖化酶的影响。Ⅱ温度、pH对于黑麯霉的液麯α淀粉酶的影响。Ⅲ温度、pH对于黑麯霉的液麯麦芽糖酶的影响。Ⅳ黑麯霉的液麯麦芽糖酶的最适温度。Ⅴ黑麯霉的液麯黄麯霉的液麯淀粉酶的耐热性比较试验,Ⅵ黑麯霉、黄麯霉的液麯淀粉酶类型的研究。

This paper is a report of a preliminary survey on a new process of ramie yarn production. It includes six parts: Part Ⅰ, Mechanical Decortication: A new machine for decortication has been designed in the light of experiences of hand decorticating preraling in villages for years.. The quality of the fibre decorticated by this newly designed machine is satisfactory. Part Ⅱ, Chemical Degumming: A new process for degumming ramie fibre has been worked out. The recipe used is tabulated as follows:— Sodium Hydroxide……18...

This paper is a report of a preliminary survey on a new process of ramie yarn production. It includes six parts: Part Ⅰ, Mechanical Decortication: A new machine for decortication has been designed in the light of experiences of hand decorticating preraling in villages for years.. The quality of the fibre decorticated by this newly designed machine is satisfactory. Part Ⅱ, Chemical Degumming: A new process for degumming ramie fibre has been worked out. The recipe used is tabulated as follows:— Sodium Hydroxide……18 grms./per litre Lamepon A……6 grms./per litre Sodium Hydrosulphate……6 grms./per litre Bath Ratio……1: 20 The fibre is boiled under normal atmospheric pressure. The time may be shortened to 30 minutes, in case alkaline treatment is used. Part Ⅲ, The Ultrasenie Method of Washing and Stamping: When the ultrasonic method is adopted, it only takes 10 to 15 minutes to complete the washing and stamping process. It is also suggested that chemical and ultrasonic methods combined in treating the fibre may be practical as well. Part Ⅳ, Auto-circular Carding Machine: The possibility to increase the line yield about 50-60% by improving the existing machine is investigated. Part Ⅴ, Supper High Drafting System: A super high drafting system using four lines of rollers is designed and has been tested in a small scale with a draft of 98.7. The result is good. Part Ⅵ, Fibre Proprieties Change: The use of different chemical reagents in changing the fibre proprieties was described. By immersing the degummed fibre in a bath of 25° Be' NaOH at 30℃, the elongation rate of fibre treated is increased from 2.1% to 10.8%.

本文系綜合研究苧蔴新工艺的初步試驗报告。文中第一部份系根据我国麻农手工剝麻的試驗,提出新型剝麻机的設計方案。已制成的新型剝麻机剝麻質量良好。文中第二部份提出了化学快速脱膠的新配方,新配方的成分为: NaOH(100%) 18克/升 NaHSO_3 6克/升雷米邦A 6克/升浴比 1:20 根据新配方处理原麻,可在常压下进行煮練和汽蒸,碱处理时間可縮短至30分鐘。文中第三部份提出应用超声波来替代脫膠时的打洗过程,超声波作用时間为10~15分鐘,文中提出了煮煉与超声波同时作用的可能性。文中第四部份探討了自动圓梳机提高梳成率至50%的可能性。文中第五部份提出了四罗拉控制管式超大牽伸的設計方案,按設計方案改裝的超大牽伸裝置已經小样試驗,在牽伸倍数为98.7倍的情况下,成紗品質良好。文中第六部份系叙述用不同化学試剂对苧麻纤維变性的試驗情况,用25°Be′NaOH溶液处理精干麻5分鐘(溫度30℃),可使單纤維伸長率从2.1%增加至10.8%。

 
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