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Firsdy, using the linear matrix inequality method and the concept of finite-time boundness, some sufficient conditions of finite-time boundedness for the linear discrete systems with uncertain exogenous disturbance were derived.

针对一类不确定线性离散系统有限时间观测器最优设计问题，利用线性矩阵不等式方法以及有限时间有界的概念，给出了具有不确定外部扰动输入的线性离散系统有限时间有界的充分条件。

To explore the effects of exogenous nitrogen input on the enzyme activity of Calamagrostis angustifolia during litter decomposition in a freshwater marsh, we supplied dissolved NH4NO3 (N0:0; N1:6 g·m-2·a-1;N2:12 g·m-2·a-1) to field plots on the Sanjiang Plain and determined the enzyme activities of litter decomposition within 160 d using litter bags.

以三江平原沼泽湿地典型湿地植物小叶章枯落物为研究对象，采用分解袋法研究了不同外源氮输入(N1、 N2分别为 6 、12g·m-2·a-1)对小叶章枯落物分解过程酶活性的影响，并设置对照区（N0，0 g· m-2·a-1）进行比较。

The main points were as follows:Influence of exogenous Fe3+, Fe2+ on LOX catalysis was studied as viewed from chemicobiology for the first time.

具体研究内容、实验主要结果及结论为：首次从化学生物学视角研究外源Fe2+、Fe3+等对LOX结构及其催化进程的影响。

Study the activity of inducible nitric oxide synthase in the liver of rabbits infected with Eimeria stiedai, the concentration of nitric oxide in the serum、the coccidian oosysts per gram feces ,Score the pathologies according to anatomic structures of rabiits'livers and micoscopic pathological changes. So as to study the effect of exogenous NO and NOS of the rabbits infected with E.stiedai. The results showed that when the rabbits were infected with E.stiedai, the activity of iNOS in the liver and the concentration of NO in the serum gradually increased and they both reached the peak after 12 days in the control group , GTN and GSNO groups.

为了探讨外源性一氧化氮和一氧化氮合酶在家兔球虫感染时的作用，本试验以腹腔注射的途径给予感染斯氏艾美耳球虫的家兔NO供体硝酸甘油和亚硝基谷胱甘肽，对球虫感染家兔诱导型一氧化氮合酶活性、血清中NO的浓度、每克粪便的球虫卵囊数、肝的剖检和镜下病变及其病变计分进行了研究。

Objective to evaluate the functional recovery of acute spinal cord injuried rats treated with exogenous wnt-3a signal protein administration and to explore its mechanism.methods moderate spinal cord contusion injury was made in 40 adult sprague dawley rats at t10.twenty rats served as contusion controls(group 1).twenty rats were treated with wnt-3a for three days after injury (group 2).the functional recovery of the rats was observed through basso,beattie,bresnahan open field locomotor score.rats were killed at 14 or 28 days after injury,then spinal cords were removed for histopathological examinations,and the expression of the bromodeoxyuridine plus neural cell markers was stained with immunohistochemical method.results rats of two groups receiving a contusive injury recovered substantial function within 1 week.by 28 days,rats in groups 2 scored 7.0 points better on the bbb scores than rats in group 1 group 2=16.94,after 28 days vs.

目的 研究外源性wnt-3a信号蛋白对脊髓损伤的修复作用，并探讨其作用机制。方法取40只成年雌性sd大鼠在t10节段制备适度脊髓挫伤模型。随机从中取20只为损伤对照组(group 1)，另外20只为损伤治疗组(group 2)。脊髓损伤3天后用wnt-3a蛋白治疗。这些大鼠的功能恢复通过basso、beattie、bresnahan开放视野运动评分来观察。这些大鼠分批在损伤后14天或28天被处死，取出损伤节段脊髓用来组织病理学检查，同时用5-溴脱氧尿嘧啶核苷和神经细胞标记物进行免疫组化染色。结果两组大鼠在伤后一周运动功能有明显的恢复。不过，到损伤后28天，我们观察发现，损伤治疗组中的大鼠bbb评分比损伤对照组中的评分高出7.0分左右(group 2∶16.94±1.18，group 1∶9.89±1.29；p.05)，光镜和电镜检查发现wnt-3a蛋白对髓鞘形成和轴突再生有一定的修复效果。

Firstly, the recombinant engineering technology related vaccine preparation was set up, including: 1. the gene knock-out based on linear DNA target molecular in vivo; 2. the selection and counterselection technology of exogenous gene knock in definite site on chromosome; 3. the Gap-repair clone technology in vivo; 4. the recombination technology of single-chain DNA and the overlapping primer; 5. Set up the new selection and counterselection technology of neo-E.

本研究首先建立与疫苗制备相关的重组工程技术包括：①基于线型DNA打靶分子的大肠杆菌体内基因剔除技术，②选择与反选择外源基因定位敲入染色体上特定位点技术，③Gap-repair体内克隆技术，④单链DNA重组技术和重叠引物介导的DNA重组技术，⑤建立&抗生素-酶切位点&选择反选择技术新技术。

The cells satisfy the criteria of postnatal somatic stem cell. 2. DPSCs could be transduced by retrovirus-mediated Deltal gene transfer and expressed functional exogenous Delta1 protein.

采用逆转录病毒基因转移技术可以将Delta1基因导入体外培养的人牙髓干细胞，并有功能性外源Delta1蛋白表达。

In addition, like ascorbic acid, an important reducing substrate for H2O2 removal, but unlike diphenylene iodonium, an inhibitor of the H2O2-generating enzyme NADPH oxidase, PD98059 and TFP not only reduced exogenous H2O2 levels in guard cells in light, but also eliminated the H2O2 that had been generated during a dark period and promoted stomatal opening.

另外，和H2O2的产生有关的NADPH氧化酶的抑制剂二苯基碘的作用效果不同，而和H2O2的清除剂抗坏血酸的作用效果类似，PD98059和TFP不仅能够降低光下保卫细胞的外加的H2O2水准，而且还能清除由黑暗条件诱导的已经产生的H2O2，并能引起气孔开放。

AIM: To inverstigate the effects of exogenous Znmetallothionein on antioxidative function and gene expression of SOD in weaning piglets. METHODS: Eighteen piglets (Duroc×Landrace×Yorkshire) were selected and divided into 3 groups (1, 2 and 3) randomly.

目的：用仔猪作模型，研究经锌元素诱导的外源性金属硫蛋白对机体抗氧化功能和超氧化物歧化酶基因表达的影响。

In order to improve the ability of degrading anthracene and the survival of exogenous bacteria An, protoplast electrofusion was performed between An which can degrade anthracene effectively and Tu which has high survival ability, and then a fusant with specific properties was selected from the regenerated colonies.

为了提高外源蒽降解菌An降解蒽的能力和存活能力，采用原生质体电融合技术，在蒽降解菌An和土生优势菌Tu之间实行了原生质体电融合，并从再生的融合子F中筛选到具有特定性状的后代菌株。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。