查询词典 negative ion

Objective To investigate the affect on the biologic activity of hepatoma SMMC-7721 cell line of negative air ion in vitro.

目的探讨空气负离子对体外培养的肝癌SMMC-7721细胞生物学活性的影响。

A new method based on GC/MS with negative chemical ion for determination of chloramphenicol is studied.

用GC MS建立一个高灵敏度、快速测定氯霉素的新方法。

The intermediate-basic volcanic rocks with SiO2 content less than 57.48 wt% are high in Al2O3(20.22-16.34 wt%) and K2O, enriched in large ion lithophile elements, show obvious Nb, Ta negative anomaly, these are same to the basalts which formed in island arc. The andesite, dacite and rhyolite rocks with SiO2 content between 62.11-75.19 wt%, are similar with the I-type granitic rocks formed in island arc in their geochemistry. It is suggested that the Jueluotage area of East Tianshan was in island arc setting during Late Carboniferous, when the subduction of the ancient Asian Ocean was in progress.

其中w(SiO2)小于57.48%的中基性火山岩具有高w(Al2O3)(16.34%~20.22%)，较富钾，富集大离子亲石元素，具明显的Nb、Ta负异常；w(SiO2)介于62.11%~75.19%之间的安山岩、英安岩和流纹岩岩石化学特征与准铝质的Ⅰ型花岗质岩石相似，其地球化学特征也反映出岛弧花岗岩的特点，表明东天山觉罗塔格地区路白山一带在晚石炭世仍处于古亚洲洋向南俯冲的岛弧环境。

We have conducted a comparison for detecting pathogen of doubtable infectious canine hepatitis and canine viral enteritis in clinical investigation with ion catch electron microscopy and direct negative staining electron microscopy.

本研究应用离子捕获电镜技术和直接负染电镜技术比较检测了临床上疑似为犬传染性肝炎和犬细小病毒性肠炎的犬送检样品。

As to kaolinite, it is hydrogen bond that breaks, which provides the broken surface with permanent negative charge because of the isomorphic exchange of lattice ion.

2通过对工业淀粉进行氧化和醚化改性，制得了羧甲基淀粉、氧肟酸淀粉、阳离子淀粉和双醛淀粉。

Water-rock interaction demonstrates that, a gold-boring formation , i. e., a set of light metamorphic clastic gritstone, sandy slate, and tuffaceous slate in Wuqiang Runnel Formation, Ban Stream Group, act as the source of gold deposits in South-West Hunan. The gold is originally derived from volcanic eruption materials in Wuling-Xuefeng period; for the typical single gold deposit such as Mobin, which is short of sulphide, chlorine is very important in the metallogenic process; sulphur and chlorine perform as the major negative ions to form complex ions with Au throughout the gold activation and migration movement. The complex ion of chlorine and gold may keep stable in a wide range of temperature; the physical-chemical conditions in typical geothermal fluid system are of deciding significance for gold activation, migration and precipitation.

特定体系的水岩实验证实了漠滨及整个湘西南金矿的成矿元素Au和伴生元素主要源于赋矿围岩-板溪群五强溪组的一套浅变质碎屑砂岩、砂质板岩和凝灰质板岩；首次突破传统认识，证明氯在中低温热液体系中能与Au形成稳定络合物的形式进行运移，因此氯在本区Au成矿过程中起着相当重要的作用；成矿热液流体中Au主要以金硫、金氯络合物形式在溶液中迁移，阴离子∑S、Cl〓对金的活化、迁移及沉淀起主导作用，Au的伴生元素As、Sb在热液体系中与Au形成金锑、金砷络合物有利于金的进一步活化、迁移及沉淀；中低温热液流体成矿过程中，体系的物理化学参数对Au的活化、迁移及沉淀富集起决定性作用。

The plasma source ion implantation device consists of pulsed negative high voltage power, hot cathode arc discharge system, vacuum chamber and target stage, vacuum system and monitor system.

等离子体源离子注入装置由脉冲负高压源系统、热阴极弧放电系统、真空室及样品台、真空系统和监测系统等五部分组成。

The pH of the blood is the negative logarithm of the hydrogen ion concentration at any given time .

血液的pH值是指任一时间H+浓度的负对数。

Toshiba developed the lithium ion battery unit which could charge rapidly, besides the characteristics of small, large capacity, it used fixed technology which was able to cause the nanometer level particle homogenizing, might cause the lithium ion be adsorbed evenly on the negative terminal of the battery, could charged to 80% of its capacity in one minute, 6 minutes more was possible to fill the electricity.

东芝开发的可急速充电锂离子蓄电池组，除了小型、大容量的特点之外，采用了能使纳米级微粒均一化固定技术，可使锂离子均匀地吸附在蓄电池负极上，能在一分钟之内充电至其容量的80%，再经6分钟便可充满电。

The powder of effectively inducing negative ions was prepared by adding rear earth oxide as dispersant in the tourmaline powder. A building coating was made from latex, the powder and other stuffings. The coating could effectively induce negative air ion through the water molecular colliding the tourmaline particle surface in the coating.

利用电气石电极特性，电解水分子，以稀土氧化物为电气石粉体的分散剂开发了高效产生空气负离子材料及空气负离子内墙涂料。

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。