沉淀物

First, the speed of the reaction between mud acid and rock is very fast, the effective distance of acid is short, active acid can not reach deep formation.

首先，高温下常规土酸与地层矿物反应速度极快，酸液有效作用距离短，活性酸不能到达地层深部；其次，HF与铝硅酸盐的化学反应不是简单的一次反应，其副产物氟硅酸和氟铝化物还可与铝硅酸盐发生二次反应和三次反应，形成一系列不溶性的沉淀物，对储层造成严重伤害；第三，高温情况下酸液对井下管柱及工具腐蚀性很强，对缓蚀剂性能要求高。

The stability of aloin decreased with the increase of temperature and heating time. However, the absorbency of aloin did not change with time under room temperature (20℃). The aloin was sensitive to light, and the aloe juice showed a yellowish green sediment in 2 hours after exposed to sunlight. The stability of aloin declined when the pH value arose. The aloe juice was more stable under lower concentration of sodium chloride and sucrose.

结果表明：加热的温度越高，时间越长，芦荟苷的热稳定性越差，而在室温下(20℃)芦荟苷的吸光度基本不随时间改变；芦荟苷具有光敏性，在太阳光照射下，2小时后便出现黄绿色沉淀物；芦荟溶液随着pH的升高，其稳定性下降；低浓度的氯化钠和蔗糖对芦荟汁液稳定性的维持比高浓度的效果明显。

Multistep deposition process has been adopted in the preparation of superfine inorganic composite antibacterial powder, Ag~+ as crystal nucleus, packed outside by the hydroxid and phosphate precipitate of Ti and Zr elements etc., The optimal process conditions have been found from one-factor influence tests and multi-factor orthogonal test,and the optimal process conditions were: Ag iron was imported by silver ammine, and then 100ml Titanyl sulphate solution mixing with zirconium sulfate keep hot at 90 ℃ for 30 mins, and the Zr/Ti ratio is 0.15,and Na_2HPO_4 was added in the end.

超细无机复合抗菌粉体的制备采用以Ag~+沉淀物作为晶核，外包裹Ti、Zr等金属的氢氧化物沉淀和磷酸盐沉淀物的多步沉淀工艺，并利用单因素和正交试验法对制备工艺进行了优化，其最佳工艺条件是：Ag~+以银氨络合物引入，沉淀钛锆的反应时间为0.5h，反应温度为90℃，水解反应时体系总液量为100ml、Zr/Ti为0.15，沉淀物经水洗、干燥，于700℃煅烧4.0h；即得最终产品。

The common assumption that the ratio between particulate organic carbon and particulate 234Th obtained from shallow sediment traps and filterable particles are representative of the ratio in the total particle settling flux should be treated with caution in view of well-known biases associated with tethered shallow sediment traps and the decoupling between size and settling velocity of many natural particle regimes....

在微粒有机碳和从浅薄沉淀物和可过滤颗粒中得？？？？？的第234种元素的比例是所有沉淀物熔化比例的典型代表。从众所周知的关于浅薄沉淀物的范围以及在许多天然颗粒体的大小和沉淀速率这个角度来看，这种通常的假设应谨慎对待。。。

The spotted precipitates distributes in the small pits on the stoss and the front part of the top-surface; the lamilated precipitates covers on the surface of the back part of the top-surface; there is precipitates in small amount on the lee.

在迎冰面和顶冰面前部，沉淀物呈点状位于洼坑中；在顶冰面后部，沉淀物呈片状披覆于冰床上；背冰面沉淀物少。

The culture filtrate of strain LN-176 was tested for light absorption at 260nm and 280nm, and the results showed that the protein content in the culture filtrate significantly increased. After ammonium sulphate precipitation, the supernatant and the precipitation were separated to testify their antagonistic activity, and it was found that the precipitation was inhibitory to Ustilago hordeum , but the supernatant not.

LN-176菌株的发酵液在260nm和280nm下进行吸光度测定，结果表明发酵液中蛋白质含量明显升高；发酵液经硫酸铵盐析后，取上清液和沉淀物分别做抗菌试验，发现沉淀物对青稞散黑穗病菌有拮抗活性而上清液无活性。

The desorption liquor can be used as neutralization reagent of the former coagulation precipitation process. 3The precipitate of ferrite coagulation is analyzed by XRD, EDX and FTIR. The results show that the precipitate is a noncrystal which contains As-O bond, O-As-O bond, Fe-O-Fe bond, SO_4~(2-)and -OH.

3铁盐沉砷过程中产生的沉淀物经过XRD、EDX、FTIR分析，得知为一种非晶态的化合物，化合物中含有As-O键、O-As-O键、Fe-O-Fe键、SO_4~(2-)、-OH基团，该沉淀物经过国家标准毒性浸出试验证实是一种安全无污染的固体物质。

Nanosized W-Cu powder containing 20 weight percents of Cu was prepared by a homogeneous coprecipitation process,in which Cu2WO42 / CuWO4·2H2O precipitates were first obtained by adding aqua ammonia into a liquor solution containing natrium tungstate and copper chloride and heating the solution to remove ammonia.

采用蒸氨均相共沉淀法，即加热含有Cu2+和WO42-的氨络合物溶液，使氨蒸发，获得沉淀物，然后对沉淀物进行煅烧、还原，最终制得了含Cu量为20%的W-Cu复合粉。

In fact, there is substantial controversy over whether it is better to leave contaminated sediments in place or to dredge and remove the sediments can have a serious impact on bottom-dwelling organisms, as often dramatically indicated by bottom-dwelling fish showing severe morphological impairments associated with exposure to toxic agents.

事实上，对于究竟应该把污染的沉淀物放于一处还是把它们捞取之后移到另一个地方更好一直有很大争议，就像海底的鱼当接触有毒药剂时显示严重的地貌缺陷一样，很明显的被污染的沉淀物也严重影响底层有机组织体。

Results showed that the laccase activity could be significantly improved by lignin residue. When 6 g/L lignin residue was added to culture medium in an 250 mL Erlenmeyer flask, the laccase activity reached 7005.6 IU/ml which was 5.0 times as high as that of the control whose activity was 1390.1 IU/ml.

在摇瓶条件下，当木质素沉淀物用量为6g／L时，所产漆酶活力为7005.6IU／ml，而不加木质素沉淀物时的产酶活力仅为1390.1IU／ml，酶活提高了5.0倍。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。