下水平

We analyse the probability of success in deception by malicious groups of receivers, discuss the threshould schemes with limited the number of malicious receivers, give the calculation formule of probability of successful attacks in any transmitted information, and information - theoretic lower bounds,show the size of the secret key space for each participation under the securiey level, provide the construction about the authentication schemes.

第三部分提出了动态会议认证系统，利用动态会议系统的特点，引入验证密钥集，我们运用熵函数，交互信息量及概率分布等方法，对限制内部欺骗者个数的情况进行了分析，得出了欺骗者对系统实施各种攻击成功概率的计算公式及信息论下界，说明了系统在某一安全水平下，各用户应掌握的密钥量。

These are main problems of eutrophication.In this paper we selected alga that suits to grow under different concentration of nutrition, after selecting seed, domesticating, culturing alga purely in the lab, we gained Hydrodictyon reticulatum and microalga, most of which are Miorocystis and chlorella.

本文选取在不同营养水平条件下适合生长的藻类物种，在实验室进行选种、驯化和纯化培养，得到水网藻和微藻(主要为微囊藻Miorocystis、小球藻chlorella)；以实验室培养的生长速度快、生产能力高的水网藻为原料，制备一系列环境友好性光敏物质——叶绿素及其衍生物，运用光敏氧化分光光度法测定活性氧(O_2~-，H_2O_2，·OH，和~1O_2)，根据其光敏产生活性氧效率，进行光敏物质的筛选；选用叶绿素铜及其钠盐，以微藻为实验控制对象，以Cu~(2+)作培养对照，在相同光照、营养条件下进行控藻实验。

The comparison between nitrogen and phosphorus show that the key role of the infiltrative quantity of moisture is nitrogen.

氮磷肥对下渗水累积量存在交互作用，随着施氮水平的增加，磷对土壤下渗水量的增加作用更加明显。

Results of dynamometer tests demonstrate that, the method of intermitted injection can effectively reduce the HC emission and the fuel consumption during idling operation; injectors with high pressure and small lift can provide better fuel atomization, resulting in less HC emission and fuel consumption during light load operations.

发动机台架试验研究结果表明，在怠速工况下，隔次喷射可以有效降低发动机的燃油消耗油量和HC排放水平；在低速低负荷工况下，大压力、小升程的喷油器，通过更好的雾化，可以更好的改善HC排放和燃油消耗。

Adult rats are divided into control group, intrapericardial injection group and negative group, sublingual vein injection group and negative group. 6ds after transfection, issues of heart, liver, lung and kidney are stained with X-gal to observe transfection to myocardium and non-target transfection. 3. CaN Aβ gene silencing in vivo. Adult rats are divided into Control group, hypertrophy model group, intrapericardial injection group and negative group, sublingual vein injection group and negative group.

二整体动物水平上探讨心肌有效转染途径：以PLacZ为报告基因，将成年大鼠分为空白对照纽(生理盐水心包腔内注射后超声导入)；转染质粒心包腔内注射组及其阴性对照组：质粒+微泡+酶的混合物心包腔内注射，超声导入；转染质粒舌下静脉注射组及其阴性对照组：质粒+微泡混合液经舌下静脉注射，超声导入。

The test results showed that: Young Modulus of undisturbed Kitan clay is much bigger than that of reconstituted one under the same stress level; Young Modulus of the same clay under high strain rate is bigger than that of small strain rate; Undisturbed Kitan clay showed perfect linear elastic property within small strain smaller than 0.01

试验结果显示：在相同应力水平条件下，未扰动Kitan粘土的杨氏模量大于重塑土；对于同一种粘土，在应变率大的情况下，它的杨氏模量同样大；在应变小于0.01%时，未扰动Kitan粘土呈线弹性。

ResultsBoth culture temperature and lumination braught about manifest effect on the induction of cell growth and secondary metabolite accumulation by oxalate.

结果光照和培养温度对草酸的诱导效果有很大影响，其中在12 h/d的光照下， 0.01～1 mmol·L-1的草酸对细胞生长和皂苷积累都有促进作用，而10 mmol·L-1的草酸对多糖积累有促进作用；在4个温度(22，24，26和28℃)水平下，随着培养温度的升高，添加草酸对细胞生长的抑制作用增强，但有利于多糖和皂苷的积累。

How to ensure this new structure to be in elastic state under frequent earthqu ake, be mendable under design earthquake and not collapse under infrequent earthquake, especially the last item, is the problem to be solved imminently in engineering field. Center around this problem, 5 aspects of investigation are carried out as following:(1) The experiment of seismic performance of ASCCs in this new frame structure has not been reported, in order to study this problem, 9 ASCC specimens with shear steel plate are tested subjected to the horizontal low cyclic loading, in which, the shear span ratio is 3 and axial compression ratio is different. The hysteretic curves of 9 specimens are obtained. The seismic performance indexes such as energy dissipation, stiffness degradation, strength degradation, skeleton curves and ductility of this kind of column are acquired, and the seismic fortification measures including ultimate values of axial compression ratio under different seismic degree are suggested.

1新型框架结构中所采用的角钢混凝土柱抗震性能的试验研究尚未见报道，针对这一问题，本文进行了9根剪跨比为3、不同轴压比、采用钢板箍的角钢混凝土柱在水平低周反复荷载作用下的试验研究，获得了9根试验柱的滞回曲线，考察了该类柱的耗能、刚度退化、抗力衰减、骨架曲线及延性等抗震性能指标，建议了角钢混凝土柱在不同抗震等级下的轴压比限值等抗震构造措施。

Under the condition of varying , the ratio between noise levels in local sensors, this dissertation derives the analytic expression of performance of the centralized OS-CFAR detection for and local signal-to-noise ratio in nonhomogenous background.

本文在局部传感器背景噪声功率水平间的相对比例系数变化情况下，推导出了集中式 OS-CFAR 检测在且局部观测信噪比条件下在非均匀杂波背景中检测性能的解析表达式。

There was a stable and relatively low expression level for Lbα1 and a progressive expression pattern for Lbα8 among the 1st,2nd,3rd,and 4th nymphal stages.5 Development and reproduction of L.decolor as a function of temperatureThe developmental rate,survival,intrinsic rate of increase,net reproductive rate(R_0),mean generation time,and population doubling time of L.decolor population were evaluated at eight constant temperatures.

Lb a1在1龄、2龄、3龄、4龄若虫及成虫中的表达水平分别是Lb a8的2.03、2.55、4.77、6.54、和5.28倍，且它们之间的差异均达到显著水平(P＜0.05)。5温度对无色书虱发育和繁殖的影响通过比较无色书虱在不同温度条件下的发育速率、存活率、内禀增长率等生命参数以明确无色书虱在不同温度条件下的发生发展规律。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失