查询词典 arsenic

The accumulative quantity of arsenic in earthworms were relative to the content of arsenic in soil.

说明蚯蚓是土壤中洛克沙胂污染的较好的指示生物。

In contaminated water, the high toxicity element arsenic is one of the contaminants prior to control, thus arsenic pollution in drinking water and how to remove arsenate from water have attracted much attention.

中文摘要：砷是高毒元素，是水体中优先控制的污染物之一，因此饮用水中砷的污染及其去除方法成为环境领域研究的热门话题。

With the use of an additive and treatment of technical phosphorus by dilute nitric acid, the arsenic content in the phosphorus can be reduced from 19010-6 to 3.010-6, thus 95% of arsenic is removed.

通过使用添加剂，用稀硝酸溶液处理工业黄磷，可使黄磷中砷含量由190×10－6降至3.0×10－6，脱砷率达95％。

Objective: To study synergistic effect with Ascorbic acid on arsenic trioxide inducing human Hepatocarcinoma cell apoptosis, and provide theoretical basis for promoting human Hepatocarcinoma cell apoptosis induced by arsenic trioxide.

目的：探讨抗干血酸对三氧化二砷诱导人肝癌细胞凋亡的协同效应，为改善三氧化二砷临床治疗人肝癌细胞提供理论基础。

Hydride Generation-Atomic Fluorescence Spectrometry was applied to determine the concentrations of inorganic arsenic, trivalent arsenic As(superscript 3+ and pentavalent arsenic As(superscript 5+.

目的 应用氢化物发生－原子荧光分析技术测定砷中毒病人尿液中总无机砷、三价砷As

The practice of producing Arsenic using the ways of pyrogenic and wet process and the method of producing metallic Arsenic and high purity Arsenic at home and abroad have been studied.

讨论了国内外用火法和湿法方法生产白砷的实践，以及金属砷和高纯砷的制取方法。

A compartmented soil-glass bead culture system was used to investigate characteristics of arsenic accumulation in iron plaque and in mature rice plants irrigated using water with arsenic in greenhouse. Arsenic was supplied as a solution of Na3AsO4·12H2O at the following stages: tillering, stem elongation, booting, flowering and grain filling.

采用土壤-玻璃珠联合培养的方式，选择2个氧化能力不同的水稻品种YY-1、94D-64和采自浙江富阳的土壤（砷的本底值为13.8 mg·kg-1），并设灌溉清水和含砷水2个处理（即在分蘖期、拔节期、孕穗期、开花期和灌浆期5个生育阶段灌溉含砷污水，随灌溉水进入土壤中砷的浓度为3.2 mg·kg-1），研究了砷在土壤-根表铁氧化物-水稻系统中的累积规律以及土壤和灌溉水对水稻秸秆和籽粒富集砷的贡献程度。

Under low arsenic treatment (10 mg·kg-1), more arsenic was translocated from roots to stalks and leaves, whereas no changes were found for these in other arsenic treatments.

两个品种水稻各部位砷的转运系数在低砷处理时（10 mg·kg-1）出现显著的升高，而在其他处理条件下保持不变。

A field trial for plant density has been used for practical remediation in 2004 and 2005, it has four treatments, 10 cm×10 cm、20 cm×20 cm、10 cm×40 cm and 40 cm×40 cm, respectively. The results were follows: the optimization plant density was 20 cm×20 cm; Peteris vittata L. was a herbaceous plant fit to adequacy increased density for enhancing the biomass and removalling of arsenic; with increased the plant density, the plant were accumulated more proportion arsenic in their fronds, and then made promote the efficiency of arsenic removal from contaminated soils.(2) It was a complicated pyrolysis course for plant incineration.

1在10cm×10cm、20cm×20cm、10cm×40cm与40cm×40cm 4个种植密度下，利用蜈蚣草对砷污染土壤进行了2年的田间实际修复，得出如下结论：蜈蚣草是一种适宜于密植的草本植物，具有通过提高栽培密度来提高其地上部生物产量的潜力；同时蜈蚣草密植有利于促使其吸收的砷向地上部富集，从而有利于进一步提高其对砷污染土壤的修复能力；综合考虑修复过程中的收获方式、经济成本与可操作性，在4个密度处理中密度20cm×20cm为蜈蚣草的最佳栽培密度。

Generally speaking, most of arsenic in coal are associated with arsenic-bearing pyrite, and arsenic contents of pyrite are related to origin or genetic type of pyrite.

一般而言，煤中大部分砷存在于含砷黄铁矿中，含砷黄铁矿中的砷含量与黄铁矿的成因或类型有关。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。