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The results showed that temperature rise would inhibit their esterification capacity, ethyl caproate-producing capability of raw zymin of 1# high-temperature monascus improved with the prolong of the esterification time when ethanol concentration was 4 %vol and caproic acid content was 4 mL, and when ethanol concentration and caproic acid content was within proper range, caproic acid content had more effects on the formation of ethyl caproate by raw zymin than ethanol concentration.

结果表明,温度相对升高对其酯化力的形成有一定的抑制作用;高温型红曲1#酯化菌株粗酶制剂的酯化力在乙醇浓度为4 %vol、己酸含量为4 mL时,产生己酸乙酯的能力随酯化时间的延长而增强;在适宜的乙醇浓度和己酸含量范围内,己酸含量对酯化酶粗酶制剂己酸乙酯生成影响比乙醇含量的影响大。

The problem of a curved rigid line or crack crossing the interface of the circular inclusion are studied by the principal part analysis method of Cauchy type integral equation. The singular stress index at the intersection and the singular stress at the angular regions near the intersection are obtained. The singular stress coefficients of rigid line at intersection and the stress intensity factors of crack at intersection are defined by using the singular stress.

利用Cauchy型奇异积分方程的主部分析方法对曲线型刚性线和曲线裂纹和圆夹杂界面的相交问题进行了研究,得出刚性线以及裂纹和界面交点处的奇性应力指数以及交点处角形域内的奇性应力,并利用奇性应力分别定义了刚性线在交点处的应力奇异因子和裂纹在交点处的应力强度因子。

A systematic study on computing the integral curvature line on NURBS surface is presented. Discrete normal is used to simplify calculation of the second fundamental form of the surface, resulting in accelerating the Euler iteration process in solving the differential equation of curvature line. Discrete points on the curvature line are then obtained and approximated by an explicitly presented B-spline curve on the NURBS surface using singular mixed interpolation and capable of controlling the error within a given tolerance.

对NURBS曲面的曲率线的积分进行了系统的公式推导,并利用NURBS曲面的离散法向量有效地简化了曲面第二基本量的计算,加速了Euler法迭代求解曲率线微分方程的过程;在求得曲率线上的离散点集以后,应用奇异混合插值技术,在可控精度内把曲率线用显式直接表示为位于NURBS曲面上的B样条曲线。

However, the solutions of the Cauchy problem of the nonlinear hyperbolic system generally develop singularities in finite time even if the initial data are small and smooth.For this reason, solutions must be found in the space of discontinuous functions. Therefore, one can not directly use the classical analytic techniques that predominate in the theory of partial differential equations of other types. Instead, we construct approximate solutions via the singular perturbation methods. By using the compactness of the approximate solutions, we can obtain the existence of the solutions of original system.

然而一般而言,即使是在初值很小且光滑的情况下,非线性双曲型守恒律的Cauchy问题的解在有限时间内也会出现奇异性,为此,我们必须在不连续函数空间中寻找上述问题的解,因此对这类问题的研究,我们也不可能直接利用在其它类型的偏微分方程中占主导地位的解析方法来解决问题,而是通过奇异扰动法构造近似解,由近似解的紧性得到原问题解的存在性。

Study on manufacture and properties of binderless board from steam exploded Phyllostachys heterocycla var.

研究了22、26、33 kg/cm2爆破压力,5 min蒸煮时间对毛竹无胶粘剂蒸爆板的制造和特性的影响,结果表明,无胶板的静曲强度、弹性模量和内结合强度与板材密度普遍呈紧密的线性正相关。

Spikelets with 1 floret (to 3 in Duthiea ), terete or laterally compressed, disarticulating above glumes; rachilla extension usually absent (present in Stephanachne , Sinochasea , and Duthiea ); glumes equaling or longer than floret, persistent, hyaline to membranous, 1–7-veined; floret callus obtuse to pungent; lemma rounded on back, membranous to leathery, firmer than glumes, often indurated at maturity, 3–9-veined, often enclosing palea, apex entire or 2-toothed, awned from apex or between teeth; awn straight or geniculate, glabrous, pubescent or plumose; palea subequal to lemma, hyaline to membranous, usually 2-veined (5–7-veined in Psammochloa ) but not keeled, apex usually acute.

小穗具1小花(对3在Duthiea里),圆柱状的或侧面压扁,高于颖片脱节;小穗轴扩展通常无(在Stephanachne,Sinochasea 和Duthiea里提出);颖片等长或更长于小花,宿存,到膜质,1-7脉;对刺激愚蠢的小花结茧;外稃在后面上绕行,膜质到革质,比颖片坚定,芒直或者膝曲,无毛,青春期或者羽状;内稃近等长于外稃,透明的到膜质,通常2脉的(在Psammochloa里的5-7脉)但不是翻转,先端通常厉害。

The winkling model in the process of drawing was developed on the base of Hills bifurcation-point bulking theory, which became the theoretical basis of the analysis of flange wrinkle and side-wall wrinkle.

本文在Hill分叉点失稳的能量法则的基础上建立了半球形零件拉深成形的皱曲模型,该模型是分析内皱及外皱的理论依据。

It shows that the exhaust resistance at the wind blast end reduces obviously, driven by the 800mA/12V small scale draught fan, average exhausting speed reaching above 4m/s, fairly enough to satisfy the air conditioner's demand for new wind volume. Meanwhile, the conic section of the horizontal profile and the linear design of the longitudinal profile of the exhaust end inner cavity and wind shroud for each outlet greatly reduce the flowed out exhaust, effectively lowering the wind blowing feel of the air conditioner user by playing the function of air diffusion.

经过计算和实际测试表明,该装置的送风末端风口阻力明显减小,在800mA/12V小型风机驱动下,出口平均风速可达4m/s以上,足以满足空调对象的新风量要求;同时,横截面采用2次曲线型设计、纵截面采用流线型的送风末端内腔和出口均风罩使气流流出后风速迅速衰减,起到散流器的作用,有效降低了空调对象的吹风感。

While Yankee infielders like Wang's style, he is tinkering with a pitch that could change him into a strikeout artist.

当洋基的内野手们都相当适应王建民的投球风格时,他则正在试图打造一个足以将他转变为一位三振大师的武器,他想要学习如何投曲球,希望能因此拥有一种球速较滑球更慢的武器,&无论是伸卡球或是滑球,我目前所使用的球路都是走刚猛路线&王建民说道

Based on the understanding of buckling mechanism, mechanical analytic model and simulation by FEM, the rational method and model of the tension setting for continuous annealing line are developed with a software and good effect is obtained.

基于对带钢&热飘曲&形成机理的新的认识和力学分析模型及有限元数值仿真结果,建立了一套合理的连续退火炉内带钢张力设定的方法和模型,并开发了张力设定软件供工厂使用,取得明显效果。

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