指示生物

From the viewpoint of protecting aquatic biotope, fish is deemed as target of river aquatic biology.

从保护河道内水生生物的角度出发，以鱼类为河道水生生物的指示物种。

A negative abnormal of δ〓C,δ〓O values and positive abnormal of 〓Sr/〓Sr values from the fossiliferous section of the Lowest Cambrian Meishucun Formation implies life depopulation and following explosion of life across the Precambrian\Cambrian boundary.

在前寒武纪-寒武纪界限附近，δ〓C，δ〓O的负异常及〓Sr/〓Sr的正异常暗示了震旦纪到寒武纪之间发生的生物灭绝事件，而随之出现的δ〓C，δ〓O的正异常，则可能指示了寒武纪初的生物大爆发。

The H value was calculated to be 0.246 using Shannon-Wiener diversity index method.By aquatic reservoir evaluation criteria, combined with the type and density of zooplankton,it could be clearly determined that the water quality was seriously polluted and eutrophic.4.Comprehensive assessment of water quality:Affected by the influxion of sewage, slow flow velocity,high contents of nitrogen and phosphorus,the quantities of both zooplankton and phytoplankton at 1st point were relatively high,with the appearance of various indicator species of water pollution.

计算Shannon-Wiener多样性指数法得出H值为0.246，通过水库水生生物评价标准，结合浮游动物种类和密度，可以很清楚判定水质为污染严重，已经呈富营养化。4水质综合评价：排污口1号采样点受生活污水的大量排入的影响，且水流流速缓慢，水中氮磷含量高，因而浮游动物和浮游藻类数量都很高，而且出现很多污染生物指示种，综合分析该水层水质属污染严重的富营养化。

Based on the classifying, identifying and counting of protozoan and metazoan, the relationship between microfauna community structure and operation performance of WWTP was discussed in detail, which might be used to indicate and assess the WWTP and be benefited to build control system oriented sludge population optimization.

在介绍微型生物分类、鉴定、计数的基础上详细阐述了微型生物种群结构与污水处理厂运行状态的相关性与内在联系，力求为今后利用微型生物种群结构特性来指示、评价污水处理厂的运行奠定基础，并对此方面的研究方向进行了展望。

Since operation variables of activated sludge process have distinct effects on the microfauna communities (here defined as protozoan and metazoan), their community structure can be used to indicate and assess the WWTP operation performance.

活性污泥工艺运行状态对微型生物的种群结构具有显著影响，可利用微型生物种群结构来指示和评价污水处理厂运行，且有利于建立面向种群优化的控制系统。

Distribution of biogenic silica content in surface sediments from deep water areas showed that it could not only reflect the paleoproductivity of siliceous micropaleontology in surface waters, but also indicate the strong or feeble upwelling. Thus, it was further confirmed that using biogenic silica content in sediments to trace upwelling and its change was effective and reliable. The analyzed result showed that radiolaria and poriferous specula have more contribution for biogenic opal, comparing with diatom in surface sediments from the northern studied area, probably owing to the diatom dissolved easily away and eaten by other organisms with little effort.

深水区表层沉积物中生物硅的含量分布表明，其不仅能反映出表层水体中硅质生物的古生产力水平，而且还能指示上升流的强弱，从而进一步证实了利用沉积物中生物硅含量来追踪上升流发育和变化的有效性与可信度研究结果还显示，在研究区域中北部表层沉积生物硅中放射虫和海绵骨针较硅藻占有更大的比重，这可能是由于硅藻易被溶解并易被其他生物体摄食的缘故。

Porcine hemoglobin polymer is made in imitation as the substtitute for blood product. Pseudorabies virus is chosen as the enveloped DNA model virus and the Porcine Parvovirus is chosen as the nonenveloped DNA model virus. Complete DNA sequences of these two kinds of virus are analyzed and specific fragments are selected as examinable targets. Establish a new method based on real time PCR combined with cell infection assay to evaluate virus clearance efficiency in blood product.A new method is established to remove the virus from blood product.

本研究以戊二醛聚合猪血红蛋白模拟血液制品，选取PRV、PPV分别作为血液制品中有包膜DNA指示病毒和无包膜DNA指示病毒，针对特定两种指示病毒PRV、PPV，进行了生物信息学分析，选取特定片段作为扩增靶点进行检测，建立了一种基于实时荧光定量PCR技术的检测方法，联合病毒的细胞感染力实验，用以评价血液制品中指示病毒的灭活去除效率。

Biogenic silica content was determined in 25 surface sediment samples from the southern South China Sea to study its distribution and its modern oceanic environmental significance, which may provide further scientific evidence for paleoceanography explaination.

对南海南部25个表层沉积样进行了生物硅的测定分析，试图揭示南海南部表层沉积生物硅的分布及其对现代海洋环境的指示意义，以便为古海洋学研究提供进一步的科学依据。

The paper discusses the change regulation, characteristics and designation function of the biological phase on the biological membrane of the organism contact - oxidizing system on the conditions of high concentration of NH3 - N and low concentration of BODS, and advices are given for the adjustment and supervision of the similar biological disposing system of industrial dirty water.

本研究探讨了在高浓度NH_3-N、低BOD_5条件下，生物接触氧化系统中，生物膜上生物相的变化规律、特点及其指示作用，以期为类似工业污水生物处理系统的调试与运行管理提供参考。

It is worth noting that the old steranes and the so far oldest gammacerane was detected in the 1. 8Ga shales from Chuanlinggou Formation, which denote the presences of eucaryotes and protozoans respectively.

值得一提的是在剖面串岭沟组约1.8Ga的页岩中发现了指示真核生物存在的古老甾烷和指示原生动物存在的目前所知的最古老的伽马蜡烷。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。