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These artifacts degrade quality of the result image, make the detecting and locating of the functional active region more complicated.

这些伪影降低了图像的分辨率，影响了功能激活区域的检测，极大降低了图像的临床诊断价值。

Because xanthene derivatives can degrade rapidly in the natural environment, thus, they can be developed as algaecide. The mechanism to kill the algae needs further research.

由于呫吨类化合物能在自然环境中迅速降解，残留度低，显示了一定的作为环境友好型灭藻剂开发的潜能。

Alginate lyase can degrade alginates into oligosaccharide s , and it's a kind of important tool enzyme .

褐藻胶裂解酶能裂解褐藻胶制备寡糖，是一种重要的工具酶。

In active noise control applications, the existence of disturbance can significantly degrade performance of ANC systems.

中文摘要在实际的主动噪音控制系统应用中，干扰讯号的存在会破坏系统的性能。

The calculations show that the approximation for the birefringence and the rotatory property of interaction material leads to an error in the optimum incident angle for TeO2 more than 10%, a diviation in fa-λ0 relation from experiment results, and make the spectral resolution and angular aperture of the device to be degrade.

结果指出，在该波长下，对晶体双折射取近似表达式和不计入晶体的旋光特性，对光波最佳入射角θi的选取(在θi小于60°的范围内)，将引入大于10%的误差，这个误差由于涉及到是否满足动量匹配条件，因此会对器件的性能有直接的影响。

H2O2 was dropped into the anolyte to produce Fenton reagent, which could degrade organic compounds and decrease the concentration of COD.

实验结果表明，模拟废水中的氨氮透过率达80%，垃圾渗滤液中氨氮浓度和COD，由原来的1982和2248mg/L分别降至200和127mg/L。

H2O2 was dropped into the anolyte to produce Fenton reagent, which could degrade organic compounds and decrease the concentration of CODCr.

实验结果表明，模拟废水中的氨氮透过率达80％，垃圾渗滤液中氨氮浓度和CODCr由原来的1982和2248 mg／L分别降至200和127 mg／L。

The experimental results were followed:(1) LY402 could degrade chlordane in an aerobic environment. The percent of chlordane degradation at 1.0 mg /L was more than 94% after 4 days at 30℃. When exposed to a concentration as high as 10.0 mg/L, LY402 could still degrade 61% of chlordane. There was no obvious difference between cis-chlordane and trans-chlordane in the mixture on biotransformation rate.

实验结果表明：(1)在好氧条件下，LY402能够有效降解氯丹，对于1mg/L的顺式氯丹和反式氯丹混合物，在30℃下，经过4天的好氧降解，其总降解率接近95%，进一步将氯丹混合物的总量增加到10.0mg/L，其4天的总生物降解速率仍然能够达到64%，其中，顺式氯丹和反式氯丹的生物降解速率没有明显区别。

The result makes clear, in the belt of 22 rivers appearance that evaluates in place, be in natural, close nature, degrade the reach of condition of natural, artificialize occupies total river to grow respectively 4.5%, 18.2%, 68.2% suffer factitious interference on the whole with river of dwell of 9.1%; wild goose more serious, be in degrade natural state.

结果表明，在所评价的22个河样带中，处于自然、近自然、退化自然、人工化状态的河段分别占总河长的4.5%、18.2%、68.2%和9.1%；雁栖河总体上受人为干扰较严重，处于退化自然状态。

Experimental results show the best conditions with the highest ability to degrade thiuram and TM1 has the highest ability to degrade thiuram among the three bacteria.

将3株单菌按一定方式混合制成T1、T2、T3、T4 4组混菌，用单菌降解秋兰姆的最优条件对4组混菌进行降解性能实验，其中混菌T1对秋兰姆降解率最高，降解率可达95.77%。

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。