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The main component of ramie glial was pectin, hemicellulose and lignin; The single factor on degumming of ramie test was respectively analyzed with a high vigorous of pectinase KDN and TZ-888 compound enzyme (mainly xylanase and mannanase on the pH value, bath ratio, dosage of enzyme, metal ions, temperature and time.The orthogonal test of L9(34 were done by bath ratio, dosage of enzyme, temperature and time. The results showed that the best compages of KDN pectinase on degumming was 1∶12 of bath ratio,pH 8.6,1 mmol/L Mg2+,300 IU/g of KDN pectinase,35℃、6 h;the best compages of TZ-888 compound enzyme on degumming was 1∶18 of bath ratio,pH 4.0,1 mmol/L Ca2+, 500 IU/g of TZ-888 compound enzyme,45 ℃,6 h.
摘 要:本研究根据苎麻胶质的主要成分为果胶、半纤维素和木质素,用高活性的KDN果胶酶和TZ-888复合酶(主要是木聚糖酶和甘露聚糖酶)从pH值、浴比、酶用量、金属离子、温度、脱胶时间等方面进行单因素试验,然后选取影响显著的浴比、酶用量、温度,时间进行四因素三水平的脱胶试验,结果表明鲜麻采用KDN果胶酶脱胶最佳组合为浴比1:18,pH 8.6, 1 mmoL/L Mg2+,酶用量300 IU/g,温度35 ℃、时间6 h时处理,TZ-888复合酶脱胶最佳组为浴比1:12,pH 4.0, 1 mmoL/L Ca2+,酶用量500 IU/g,温度45 ℃,时间6 h进行脱胶为优化的试验条件。
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The main component of ramie glial was pectin, hemicellulose and lignin; The single factor on degumming of ramie test was respectively analyzed with a high vigorous of pectinase KDN and TZ-888 compound enzyme (mainly xylanase and mannanase on the pH value, bath ratio, dosage of enzyme, metal ions, temperature and time.The orthogonal test of L9(34 were done by bath ratio, dosage of enzyme, temperature and time. The results showed that the best compages of KDN pectinase on dry ramie degumming was 1∶12 of bath ratio,pH 8.6,1 mmol/L Mg2+,20 IU/g of KDN pectinase,4℃、4h;the best compages of TZ-888 compound enzyme on degumming was 1∶18 of bath ratio,pH 4.0,1 mmol/L Ca2+, 300 IU/g of TZ-888 compound enzyme,40 ℃,5 h.
摘 要:本研究根据苎麻胶质的主要成分为果胶、半纤维素和木质素,用高活性的KDN果胶酶和TZ-888复合酶(主要是木聚糖酶和甘露聚糖酶)从pH值、浴比、酶用量、金属离子、温度、脱胶时间等方面进行单因素试验,然后选取影响显著的浴比、酶用量、温度,时间进行四因素三水平的脱胶试验,结果表明干苎麻采用KDN果胶酶脱胶最佳组合为浴比1:12,pH 8.6, 1 mmoL/L Mg2+,酶用量200 IU/g,温度45 ℃、时间4 h时处理,TZ-888复合酶脱胶最佳组为浴比1:18,pH 4.0, 1 mmoL/L Ca2+,酶用量300 IU/g,温度40 ℃,时间5h进行脱胶为优化的试验条件。
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Firstly, the 3D solid model of the analyzed object is built directly in the FEM software ANSYS 8.0 without using other CAD software. The influence of the side sizes of solid elements on computing results and the influence of coupling ways between different parts on the modal parameters are researched by simply modeling. And a new connecting method about joints in ANSYS is proposed and applied to finite element modeling of the test-bed for spindle system. Furthermore, several different computing techniques for modal parameters extraction are compared in solving the finite element model of spindle system test-bed. Many modal solutions are also done to achieve the relationships between the whole or part stiffness value and computed modal parameters. The laws about joint rigid parameters" influences on modal parameters are discussed by means of altering their values for conjoint parts. And by changing local rigid parameter values, the different location selections" influence on computed modal parameters is also studied.
本文通过使用ANSYS 8.0软件直接建立研究对象的实体结构模型,而没有借助其他的CAD软件;通过构建简单的模型研究实体单元边长大小对计算结果的影响,部件之间不同的联结方式对模态参数的影响,探讨在ANSYS中实现结合部的方法,提出一种新的联结方法,并建立主轴系统试验台的有限元模型;对建立的主轴系统试验台有限元模型求解,比较几种不同模态提取方法;通过改变结合部联结单元的刚度参数进行的计算,寻找联结刚度对模态参数变化的影响规律;改变局部联结单元的刚度参数,研究刚度值位置差异对计算模态参数的影响。
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Four scores are reported for the ACT Mathematics Test: a total test score based on all 60 questions, a sub score in Pre-Algebra/Elementary Algebra based on 24 questions, a sub score in Intermediate Algebra/Coordinate Geometry based on 18 questions, and a sub score in Plane Geometry/Trigonometry based on 18 questions.
ACT 数学测试共包括4项成绩:基于全部60个问题的总分数,基于24个问题检测初等代数/初等数学的技能分数,基于18个问题检测中等代数/坐标几何的技能分数,以及基于18个问题检测平面几何/三角函数的技能分数。
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Large numbers of test data which is systemic, credible, exact and detailed was acquired during the processing of these two scientific research item and settlement value and theoretical analysis on trial section was done together with the test and research on the site. The connection between the rule of settlement in the transition zone and the parameter such as groundsill, transmogrification modulus, material and density was studied based on comparing true settlement value in trial section with settlement value of theoretical calculation by frame analysis software. And it will help the farther research on design and construction about road-bridge transition zone.
同时在两个科研项目开展过程中,取得了大量系统、详实、可靠的试验数据,并结合现场试验研究工作,在室内开展了深入细致的过渡段沉降变形数值计算和理论分析研究,运用有限元分析软件,对过渡段的沉降变形进行了仿真数值模拟计算,与现场实测数据进行了对比分析,全面考察了过渡段地基土层与变形模量、路堤填料与压实密度等参数对过渡段沉降变形的影响规律,为进一步研究路桥过渡段的设计和施工可以提供借鉴。
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The company's products used by the fabric, is the company's own design and production of worsted fabrics radiation, soft texture, permeability, and washable, radiation effects through国家技术监督局Identification Test Center in Shanghai (Shanghai, China, the United States of using the Test Center Test Association of ASTM D4935-99 standard test results show that on Sonneratia weft fabric used by the radiation, electromagnetic shielding efficiency up to 99.99 percent).
公司产品所采用的面料,是公司自行设计生产的精纺防辐射面料,质地柔软、透气性好,耐水洗,防辐射效果通过国家技术监督局上海测试中心鉴定(中国上海测试中心采用美国材料试验协会ASTM D4935-99标准的检测,结果表明上海桑纬所采用防辐射面料,电磁屏蔽效率可达99.99%)。
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The applicability of this constitutive model is evaluated with the simulations of material tests conducted by Sasaki et al., includes (1)Uniaxially constant strain amplitude cyclic test,(2)Fast in tension/Slow in compression constant strain amplitude cyclic test,(3)Slow-fast-slow constant strain amplitude cyclic test,(4)Cyclic strain with tensile hold time test. Simulations based on this constitutive model have a good agreement with (1),(2) and (3), proofs that it can describe the cyclic stress-strain behavior of 60Sn/40Pb solder very well.
为验证本模式之能力,本文选择Sasaki等人之实验为对象,分别对60Sn/40Pb焊锡在(1)定应变振幅之循环单轴负荷实验、(2)拉伸快/压缩慢之定应变振幅循环负荷实验、(3)慢-快-慢之定应变振幅循环负荷实验、(4)拉伸应力保持之循环应变实验下的材料行为进行模拟,由(1)、(2)及(3)之结果证明本模式对60Sn/40Pb焊锡循环应力-应变整体行为具有理想的描述能力,并对循环塑性应变范围与应力范围之值有准确的预估。
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The main influence factors to shear strength test result was systenatically studied by the contrast test,including test machine,shear clamp,distance between shear blade edge,clearance fit between test sample and shear hole,shear rate,effect of machining on sample's outer surface.
通过对比试验,全面系统地研究了剪切强度的主要影响因素:试验设备、剪切夹具、刀口间隙、试样与剪切孔间隙、剪切速度以及试样的表面机加工对钛合金丝材剪切强度的定量影响。
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On the basis of the analysis of the influence of the object oriented language to software test, this article discusses the tactic and technology for object oriented software test, and proposes an idea and method to test the class as a basic test unit.
本文在分析面向对象程序设计语言对软件测试影响的基础上,讨论了面向对象软件测试的测试策略及测试技术,提出了将对类层的测试作为基本的单元测试的思想和方法。
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The study found that free-stage has no effect on performance, to be end as soon as possible; the pressure and oil-filling time in oil-filled stage are the key, which directly determines the speediness of the starting; slipping-stage decides the comfort of the starting, and the friction coefficient is important for this stage, synchronous engaging-stage don't product slipping loss, and don't impact the jerk of the vehicle, needing to be finished fast. According to control object and evaluate guidelines, the fuzzy control algorithm is developed and different experiments verify the correction of algorithm.5 With the debug of CVT control software, the experiment is finished in two years which includes test bench experiment, 60℃high temperature test in Tulufan of Sinkiang province, 4647 meters high altitude test at Kunlun mountains, as well as the minimum temperature of -32℃test at Heihe.
根据控制目标及评价指标,开发了湿式离合器接合过程模糊控制算法,各类试验证实了算法的有效性。5湿式离合器的起步试验伴随CVT控制软件的调试,历时二年,经过台架试验,新疆吐鲁番环境温度高达60℃的高温标定试验,昆仑山口海拔高度4647米的高原标定试验,以及黑河最低温度为-32℃严寒标定试验,所取得的研究成果对离合器软件开发和标定流程具有很好的借鉴意义和工程应用价值。6自动变速器起步离合器的标定是软件产品开发的核心技术。
- 推荐网络例句
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And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.
47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。
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Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.
提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。
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Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...
嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。