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The radical scavenging activity of Laminaria japonica pigments was studied by the DPPH2,2-Diphenyl~(-1-picrylhydrazylassay. The total pigments showed a strong DPPH radical scavenging activity of 65.819% with the concentration of 0.52mg.ml~(-1). The DPPH radical scavenging activity of fucoxanthin was 19.85% with the concentration of 0.27mg.ml~(-1). The antimicrobial activity of pigment in Laminaria japonica was studied by the method of round paper. The results showed that the pigment extracts have activity against Escherichia coli, Pseudomonas aeruginosa, Saricina flava and Saccharomyes cerevisia. The antibacterial activity of total pigments for Saccharomyes cerevisia was the strongest with an inhibition diameter of 18.9 mm; and the antibacterial activity of fucoxanthin for Saricina flava was also much significant with an inhibition diameter of 10.2 mm.

测定了它们对自由基的清除率和对四种细菌的抑菌效果,研究结果表明,总色素和褐藻黄素的浓度与自由基清除率成正比,当总色素浓度为0.52mg.ml~(-1)时,清除率达到65.819%,高于陆生植物黑米色素和紫甘薯色素;当褐藻黄素浓度为0.27mg.ml~(-1)时,自由基清除率达到19.85%,低于紫苏色素、紫甘蓝色素、黑米色素、紫甘薯色素;对大肠杆菌、绿脓杆菌、八叠球菌、金黄葡萄球菌的抑菌实验结果显示,海带总色素对金黄葡萄球菌的抑菌活性最强,抑菌圈直径为18.9mm;褐藻黄素对八叠球菌的抑菌活性相对较强,抑菌圈直径为10.2mm。

The effects of different concentrations of Cu2+(0.01, 0.1, 1, 10, 50, 100, 200 mg/L) in BG11 on the growth, morphostructure and physiological characteristics of Chlorococcum sp.

研究了不同浓度的Cu2+(0.01,0.1,1,10,50,100,200 mg/L)对绿球藻Chlorococcum sp。

The growth and physiological change of Chlorococcum sp. under different nitrogen concentrations were studied adopting the standard method of algal bioassay.

采用藻类生物测试标准方法研究了不同氮浓度条件下绿球藻Chlorococcum sp。

The chlorophyll contents and photosynthesis decreased gradually with the increasing of Cu2+ concentration. The respiration rose gradually in the range of 0.01~10 mg/L Cu2+ and fell gently over 10 mg/L. These results indicated that Chlorococcum sp.

在1 mg/L Cu2+浓度下,绿球藻对Cu2+的去除率最高为90.5%;叶绿素含量及光合作用强度随Cu2+浓度的升高逐渐降低;呼吸强度在0.01~10 mg/L Cu2+浓度范围内逐渐升高,大于10 mg/L Cu2+则逐渐降低。

The obtained results show:After applying Yelükang ball fertilizer,the active iron in the chlorotic fruit tree leaves increased by 8.7%~20.2%,the chlorophyll content of apple tree increased by 18%;the chlorotic degree of fruit trees decreased 2~3 scales,the yield per tree increased by 56%~89%.

研究结果表明:施用叶绿康球肥可使失绿果树叶片的活性铁提高8.7%~20.2%,苹果叶片的叶绿素含量提高18%;果树失绿程度降低2~3级,果实单产提高56%~89%。

Through field survey and laboratory analysis,the efficiency of the ball fertilizer on greenless recovering of fruit tree leaves,on mineral elements and chlorophyll contents in leaves,as well as fruit yield and apple quality were studied.

用叶绿康球肥在苹果、梨、桃和李树上进行大田对比试验,通过田间调查和室内分析,研究了球肥对果树叶片的复绿效果、对叶内矿质营养元素及叶绿素含量的影响以及对果树的增产效果和改善苹果品质的作用等。

Flinn plots show that, both garnet and omphacite are belong to constriction ellipsoid, which is stretching strain, being similar with the result of omphacite fabric.

6付林图解表明,绿辉石和石榴子石均属于收缩型椭球,拉伸型应变,这与绿辉石组构测定结果一致。

Sagittarius, each female constructs a tunnel after she has mated and then packs it with the stuff in the form of a brooding ball, on which she lays her eggs. Her mate guards the entrance, fighting other males to stop them entering the tunnel and cuckolding him.

举箭嗡蜣螂为例,每只雌性蜣螂在交配后就会建洞穴,在球状物上产卵,然后把带卵的球状物塞满整个洞穴,其伴侣则守护洞穴出入口,对抗其它雄性蜣螂阻止他们入侵,也避免自己被戴绿帽。

The dry alga glomerules be homogenated with bead mill homogenizer for assay of total lipid and every fatty acid content each by chloroform methanol...

每一纲的微藻脂肪酸组成都有各自特点,绿藻纲中 1 6∶0、1 6∶1(n - 7)、1 8∶1 (n - 9)含量较高,但微绿球藻中 1 6∶1 (n- 7)、2 0∶5(n - 3)含量远高于其他绿藻;金藻纲中含大量1 4∶0、1 6∶0、1 8∶3(n - 3)、2 2∶6(n - 3);硅藻纲中 1 4∶0、1 6∶0、1 6∶1 (n - 7)、EPA含量较高;黄藻纲的异胶藻富含1 6∶0、1 6∶1 (n - 7)和EPA。

Picoplankton were more important in the open water areas than in the nutrient repleted coastal waters.

总的看来,海流、水团的性质越接近大洋,超微型浮游生物在生态系统中的地位相对越重要,而原绿球藻在生物量和生产力上的相对贡献也越大。

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