产生

In the stage of early hypha growth, spore germination, rapid filamentous growth stage and appressorium formation, the STK1 gene expression could be detected.

在产生分生孢子前、产生分生孢子时、菌丝的对数生长期和产生附着胞时都可以检测到STK1基因的表达。

Furtherly, crosses were made among fertile isolates from rice plants in Jiangsu. Only 6 of 25 crosses produced perithecia and asci, but no ascospore produced. This suggest that the frequency of sexual stage occurrence of Magnaporthe grisea was very low in the rice field in Jiangsu.

用江苏省稻瘟病菌的可育菌株进行互交，25个组合中只有6个组合能产生子囊壳和子囊，但均不产生子囊孢子，提示江苏省稻瘟病菌在田间产生健康有性后代的几率不大。

Various light resources in road lighting produce different optical biological effects which affect drivers'astuteness and traffic safety.

采用不同的道路照明光源，会产生不同的光生物效应，从而对驾驶员的机敏程度等产生影响，即对发现障碍的反应时间产生影响，并会影响道路照明安全。

Here I have designed bar code and identification procedures, one is to make ourselves understand the principle of producing barcode; the other is to adopt procedures to achieve the construction have a bar code software.

我在这里设计的条形码产生和识别的程序，一方面是为了使自己弄清条形码的产生原理；另一方面也是为了通过程序的建造来实现一种产生条形码的软件。

Suitable substrates were the key factors for xylanases production. XylanaseB was produced mainly when corn starch or beechwood xylan was used as the inducing substrate.

发酵底物是产生木聚糖酶的重要影响因素，在以玉米淀粉或山毛榉木聚糖为底物时，产生的木聚糖酶主要是木聚糖酶B，而以廉价的麦麸为底物则主要产生木聚糖酶G和B。

It assumes survival time follow exponential distribution and quality of life initial value follow beta distribution. In order to correlate present quality of life with former quality of life, each quality of life were evaluations generated from AR(1) model. In addition, we set parameters of AR(1) model between 0 and 1, calculates expected QAST from different parameter combinations.

假设存活时间服从指数分布、生活品质初始值服从Beta分布，并利用时间序列一阶自我回归过程First-Order Autoregression Process， AR(1的模型产生各次生活品质评量值，使当次的生活品质与前一次的生活品质产生相关性，并将AR(1)模型中的参数设定为介於0与1之间的值，且产生不同的组合。

The viscous torque can be calculated by a simple method and the frictional torque can be obtained by experiments. The torque dependent on the magnetic field is obtained by electromagnetic finite element analysis.

由动力粘度产生的力矩可以通过简单的方法进行计算，由摩擦产生的力矩可以通过实验测得，而由磁场产生的力矩则要通过电磁场的有限元分析得到。

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

That is to say, we could draw a conclusion through the comparison of different editions of drum words of Two Degrees Plum in Qing Dynasty Republic of China with the form, content and thought of novel, and the comparison of the form, content and thought with different editions of drum words. Our conclusion is that different type of edition of the drum words in latter Qing Dynasty times, which basically followed the traditional modes of past drum words from the formality, but the ideological content could directly reflect the vicissitudes of society and idea at that time with the times changed. The different types of texts of drum words had directly reflected the traditional entertainment involving talking and singing entertainer's thoughts (they represented the first floor people's thoughts at that time), and also had directly reflected the common and popular writers'thoughts from their adaptions(they represented at that time one kind of residential social stratum thought which increased sharply along with city expanded and resident social stratum population produced, and this thought also referred to one kind of thought after the chromolithography had entered into China in latter Qing dynasty, cultural printing propagation velocity sped up and drum words gradually became the ordinary resident's table-top reading material).This kind of thought produced along with the social vicissitudes, also impelled the entire society's forward development and the progress from the science and technology and the cultural domain.

本文即是对《二度梅》小说故事被改编为鼓词的文本进行研究的一篇论文，即通过对现存的清代民国《二度梅》鼓词的不同类型的版本与小说形式、内容、思想之间的比较，鼓词与鼓词不同类型版本之间的形式、内容、思想之间的比较，来阐述出一个结论，就是晚清时期的不同类型的鼓词版本，从形式上基本仍然沿袭了过去鼓词的传统模式，但内容思想上则随着时代变化而能够更直接地反映着当时的社会思想变迁，鼓词不同类型的版本文本直接反映了说唱艺人的思想(他们代表的是当时底层民众的思想)，也直接反映了文人改编鼓词的普通俗文人思想(他们代表了当时随着城市的扩大市民阶层人数的激增而产生的一种市民阶层的思想，当然这种思想也是指晚清石印术进入中国后文化印刷传播速度加快，鼓词逐渐成为普通市民的案头读物后而产生的一种思想来说的)，正是这种随着社会变迁产生的思想，又从科技和文化领域推动了整个社会的向前发展和进步。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。