尾样的

The following conclusions have been made in this paper.(1) Based on CO_2 flux data of eddy covariance, variation characteristics of gross primary productivity in four flux observation stations were studied, which are an alpine meadow, an alpine shrub meadow, a swamp alpine meadow and a steppe alpine meadow at Dongxiong. The results show that photosynthetic capacity of the alpine meadow is the highest, and the annual total GPP is 652.2g C/m~2. Daily-differencing approach is used to analyze the random error of CO_2 fluxes measurements. The results show that the distribution of random error follows more closely follows a double-exponential, rather than a normal distribution, capturing the high peak and thick tail, and the random error varies with environment variables, which violates the assumptions for the ordinary least squares fitting with normality and homoscedasticity, consequently, we introduce maximum likelihood method for parameter optimization.

本文主要在以下几个方面开展工作并获得了一些认知和结论：(1)通过分析样带区域内高寒草甸、高寒灌丛、沼泽化湿地和草原化高寒草甸四个通量观测站点草地生态系统总初级生产力变化特征，研究结果表明HBBT矮嵩草草甸生态系统植被光合作用能力较强，年GPP总量为652.2 gC/m~2，明显高于其他三种生态系统；通过利用"单塔日变化法"获得四站点通量观测数据随机误差，结果表明通量观测随机误差概率分布呈现尖峰厚尾的特征，与正态分布相比，更服从双边指数分布，进一步分析表明通量观测随机误差随环境变量(风速、温度和光合有效辐射)的变化而变化，这违背了普通最小二乘法进行生态过程模型参数优化正态分布且误差同质的假设，因此本研究中引入最大似然法进行生态过程模型参数优化。

However, there is little discussion on reliability evaluation of nonworking redundant systems such as cold and warm stand-by systems in literature, especially there is no discussion in case of medium and small sample size.

本文结合总装备部九五预研重点课题《小子样系统可靠性综合方法研究》和我国工程实际，较系统地研究了常见各种贮备系统的可靠性评估问题，包括冷备和温备两种贮备类型，指数型和Weibull型两类部件，完全可靠、成败型和指数型三种开关，以及定数、定时、和定总时截尾三种指数型试验数据。对上述各种常见情况下的贮备系统，分别给出系统可靠度函数及其点估计，并用WCF方法导出了可靠度置信下限。

Methods: Human leukemia cell line K562 was treated with different concentrations of WM. The proliferation of K562 cells was examined by MTT assay. DNA damage in K562 cells was examined by single cell gel electrophoresis assay, and apoptosis of K562 cells was detected by Annexin V-FITC/PI double staining. The expressions of total Akt, phosphorate Akt, and NF-κB p65 mRNA and protein were detected by RT-PCR and Western blotting, respectively.

以不同浓度的渥曼青霉素作用于人类髓细胞白血病细胞K562，采用MTT法检测细胞增殖活性，单细胞凝胶电泳技术检测细胞DNA损伤形成的"彗星"样拖尾现象，Annexin V FITC/PI双标法检测细胞凋亡，Western blotting、RT-PCR检测渥曼青霉素作用K562细胞后总Akt和磷酸化Akt以及NF-κB基因及蛋白表达水平的变化。

An electron microscopic study of resting cysts and their organelles in Paraurostyla weissei has revealed that:⑴The cyst wall is composed of four layers named from outside to inside:ectocyst,mesocyst,endocyst,and granular layer.The granular layer is delimited by the cell pellicle.Both the layer and pellicle contain a few vesicles.

为研究纤毛虫休眠状态下细胞的分化及其胞器的特征，本文以透射电镜术显示，魏氏拟尾柱虫休眠包囊中，颗粒层壁内有小泡，表膜位置也偶见小泡样结构，大部分线粒体以多个相互聚集在一起，自噬泡将线粒体等胞器包裹在内经历消化过程，细胞内膜系统十分发达。

Result:(1)Tau prevented neurons against Mn toxicity of low and middle concentrations. The ideal conditions can reach upon 4. 5 mM Tau added just, nearly no apoptosis cells could be detected.(2)The percentages of apoptosis intogether were lower than those in Mn just , being concentration-dependent relations with Taurine levels.(3)Mn induced DNA damage of neurons with dose-depedent, The higher of Mn concentration, the lengther of the comet tail and the higher percent comet-like cells. Tau incubated could weaken significantly the lesions of Mn towards DNA on the degree.

结果：(1)牛磺酸对中低剂量锰的毒性有一定的拮抗作用，单独加入牛磺酸效果最好剂量是4.5mM，视野下几乎不见凋亡细胞；(2)牛磺酸干预后培养神经细胞凋亡率低于相同剂量的单纯锰培养细胞组，且与牛磺酸浓度呈剂量依赖性；(3)锰引起培养神经细胞DNA损伤，表现在彗星尾长增加，彗星样细胞百分率增加；加入牛磺酸干预后，可明显改善锰造成的培养神经细胞DNA损伤。

There are no marks of punctuation, but the skilled reader was guided into the sense by stichometric, or verse-like, arrangement into coda and commata, which correspond roughly to the principal and dependent clauses of a sentence.

有没有标志的标点符号，但熟练的读者被引导到意识，由stichometric ，或韵文样，安排到尾波和commata ，对应大致本金并依赖第一个句子。

Results The ten specific areas comprising hippocampus, parahippocampal gyrus, entohinal cortex, amygdale, the head of the caudate nucleus, middle temporal gyrus, cingulated gyrus, inferior parietal lobule, insula and dorsolateral prefrontal cortex could completely differentiate AD from normal controls by back-propagation neural network with eighteen training samples.

结果 海马、海马旁回、内嗅皮层、杏仁体、尾状核头部、颞中回、扣带回、顶下小叶、岛叶和前额背外侧区域，在训练样本数为18的情况下，利用神经网络能够达到100%的判别效果。

The rush is on for silky sharks and yellowtail snappers to get their share of food tossed out of a dive boat into Cuba's coastal waters.

意译：在丝样鲨和黄尾鲱鱼进行一场匆匆的突袭，它们要得到来自一艘在古巴海岸水域投下的食物。

Results Well-resolved,reproducible 2-DE patterns of SGC7901/VCR and SGC7901 were established.Silver staining was better when protein sample amount was low,overloaded protein will interfere resolution of the maps.Gels stained with colloidal Coomassie brilliant blue had more protein spots numbers and abundance without apparent trails when increased loading protein sample.

结果 获得了背景清晰、重复性好的双向凝胶电泳图谱，两种染色凝胶相比，硝酸银染色在样品少时显示更佳，过量则影响图像质量，而胶体考马斯亮蓝染色在上样量增加时的凝胶蛋白质点数目及丰度均增加，并无明显拖尾。

objective to investigate staining methods for two-dimensional gel(2-de)electrophoresis in multidrug resistance of gastric cancer.methods cultured vincristine-resistant human gastric cancer cell line sgc7901/vcr and its parental cell line sgc7901.variant amount protein of those cells were separated by 2-de.gels were stained with silver nitrate or colloidal coomassie brilliant blue,and scanned by image scanner.results well-resolved,reproducible 2-de patterns of sgc7901/vcr and sgc7901 were established.silver staining was better when protein sample amount was low,overloaded protein will interfere resolution of the maps.gels stained with colloidal coomassie brilliant blue had more protein spots numbers and abundance without apparent trails when increased loading protein sample.conclusion two staining methods were influenced largely by the sum of protein samples,properly selection may be helpful for further study with proteomics in multidrug resistance of gastric cancer.

低甲氧基果胶的胶凝机理及防止预凝胶。。。他扎罗汀凝胶与克林霉素凝胶治疗痤疮。。。注射隆乳后经乳晕切口取出聚丙烯酰胺。。。目的分析利用蛋白质组学方法研究胃癌耐药相关蛋白质中双向电泳凝胶的染色显示。方法培养胃癌细胞sgc7901和长春新碱诱导的耐药胃癌细胞sgc7901/vcr，用双向凝胶电泳技术分离总蛋白，银染及胶体考马斯亮蓝染色，image scanner扫描仪扫描凝胶。结果获得了背景清晰、重复性好的双向凝胶电泳图谱，两种染色凝胶相比，硝酸银染色在样品少时显示更佳，过量则影响图像质量，而胶体考马斯亮蓝染色在上样量增加时的凝胶蛋白质点数目及丰度均增加，并无明显拖尾。结论两种显色方法受样品量影响较大，恰当选用有利于通过蛋白质组学研究胃癌耐药机制工作的进一步开展。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐