藻类

It was determined that photosynthesis of algae is the principal reason of the pH value increment.

经研究确定水体中藻类的光合作用是pH升高的主要原因。

The higher amount of gammacerane, relatively low value of Pr/Ph (pristane vs. phytane) and presence of dinosterane all suggest that the lake during the period of Qingshankou 1st formation deposition was subjected to salinity stratification, strong reducing deposition environment, and the potential marine transgression. The shales of Qingshankou 2nd3rd formations mainly contain typeI and typeII kerogens.

青一段泥岩有机质类型主要为Ⅰ型，较高的甾烷含量反映以藻类输入为主，较高的伽马蜡烷和低的Pr/Ph及甲藻甾烷的存在反映该时期水体具有盐度分层和强还原的沉积环境，可能与海侵有关。

Protista In some classifications, a kingdom of simple eukayotic organisms including the algae and protozoans.

原生生物：指在一些分类中，简单真核生物的一个界，包括藻类和原生动物。

Algae are simple, generally aquatic plantlike organisms in the kingdom Protista.

藻类是真核生物界中简单、普通的水生类似植物的有机体。

The Culture Collection of Algae and Protozoa is the longest established of the world's major protistan service culture collections.

藻类和原生动物收藏是世界上最早建立的主要原生生物培养物的服务性收藏。

Description: The Culture Collection of Algae and Protozoa is the longest established of the world's major protistan service culture collections.

网站描述：藻类和原生动物收藏是世界上最早建立的主要原生生物培养物的服务性收藏。

Across the country, millions of tons of raw sewage, industrial waste and fertilizer runoff have turned lakes into algae-covered cesspools.

在全国各地，上百万吨未经处理的污水、工业废水和农药残留物将湖泊变成了藻类泛滥的污水池。

Using BG11 as base media,the toxic effects of heavy metal Cu2+on alga Microcystis aeruginosa were studied according to the change in growth,chlorophyll-a,photosynthesis release oxygen and respire exhaust oxygen of the M.aeruginosa under different Cu2+ concentrations in the experiment conditions.

以BG11为基础培养基研究了实验室条件下重金属Cu2+在不同质量浓度下对铜绿微囊藻的急性毒性效应。试验结果表明，Cu2+对藻类的抑制效应随Cu2+质量浓度的增加而增加：质量浓度为0.3~1.2 mg/L的Cu2+对铜绿微囊藻生长的抑制作用不显著，且48 h后出现藻细胞密度反弹现象，杀藻效果不理想。

The detection of retene indicated that it is not the unique indicator of higher plants.

惹烯及相关的中间产物在藻类热解产物中的检出，说明它不是高等植物的专一指标。

Retene originated from algae perhaps has same evolution path with that derived from terrestrial higher plants.

源自低等生物藻类的惹烯可能与来自陆源高等植物的惹烯有着相同的演化途径。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。