浓度

When the proportion of amino acid and Fe~(3+) is above 2, the photoreduction reaction of Fe~(3+) at the early stage exhibits a first-order reaction kinetic pattern, but remains nearly stable after 100 min.

在氨基酸与铁浓度配比大于2的情况下，在铁-氨基酸盐配合物的光还原反应初期铁浓度的增长符合一级动力学反应规律，100 min后浓度趋于稳定。

Simultaneously, the exports of ionization rate and nonionzed concentration are set up as a powerful tool for studying thoroughly the freeze-out effect. dN〓/dp and dN〓/dn are neglected in the linearized equation system of the iteration methods of Newton and Gummel, due to having lower 15 orders or more than dN〓/dn and dN〓/dp, thus the computing effort is cut down with no effect on precision. A new cut-off technique is adopted to accelerate the convergence speed, about twice reduced for Newton iteration method and six times or so for Gummel iteration method. The approximate formulae of Fermi-Dirac statistics are also put forward with simpler form and higher precision. 3. A term dependent on time is added to the electron and hole current succession equations respectively. It is only this model that conservation of charge in transient analysis and alternating small-signal analysis at low temperature can be kept by. 4. The performance of SE-PISCES is explained by the simulation example of PISCES-2B, diode.

研究了低温半导体器件模拟的数值方法：对载流子浓度进行了新的归一化；编制了不考虑掺杂所引进的内建电场时的电离率计算程序；由于低温杂质电离率随偏压状态而变化，为此编制了每次求解迭代时的电离浓度计算程序，并将其插入到求解迭代程序中；同时，设置了杂质电离率和未电离杂质浓度的出口点，为更深入地研究冻析效应提供了有力工具；在Newton迭代法和Gummel迭代法的线性化方程组中忽略了dN〓/dp、dN〓/dn，是因为它们比dN〓/dn、dN〓/dp低15个数量级以上，这样减小了计算量又不影响模拟精度；对Newton迭代法和Gummel迭代法采取了新的截断技术，提高了收敛速度，Newton法迭代法和两次左右，Gummel法减少六次左右；给出了表达式更简单而精度更高的Fermi-Dirac积分近似计算公式。

Taking the friction into account and based on the empirical relation for flow friction in circular tube, the paper developed a correlation for the friction factor of gas-solid flow in riser.

参照圆管中的单相流动，考虑提升管几何参数和操作参数的影响，通过定量分析提升管内气固悬浮物与管壁间的摩擦，提出了对表观颗粒浓度的修正式，修正浓度与实际浓度吻合良好。

The Pb accumulation of garden verbena growing in 1000 mg kg-1 were 65.1±9.1 mg kg-l, and it can remove 651±128 μg plant-1. Although Pb accumulation of garden verbena did not reach the threshold concentration of 1000 mg kg-l of hyperaccumulator, but the concentration of Pb in the plant are much higher than that of general plants.

美女樱种植於铅1000 mg kg-1处理时累积铅浓度达65.1±9.1 mg kg-l，其铅移除量为651±128 μg plant-1，虽然累积铅浓度未达超级累积植物之标准(1000 mg kg-l)，铅移除量也不如预期的高，但已比一般植物有明显偏高之铅浓度与吸收量。

No significant difference in SAA concentration was observed among the heifers during cold and warm seasons.

定SAA的基础值范围为0-43.7g/mL，此与6 头分娩后健康母牛之平均SAA浓度(26.2±2.5g/mL)无显著差异，但两者与18头产后子宫炎母牛之平均SAA浓度(85.4±9.0g/mL)有极显著的差异(。01)，显示乳牛SAA浓度可作为乳牛疾病炎症反应之指标。

The results showed that the carrot of different genotypes responded differently with the plant growth regulators. There was no significant difference on the three kinds of callus inducing medium for cultivar Linfeng. In contrast, the rate of embryogenic callus and the number of resistant plants in cultivar Japanese black filed five inch was raised with increasing plant growth regulator concentration.

结果显示：不同基因型胡萝卜的分化对激素浓度的反应不同，林丰改良五寸参在3种培养基上的胚性愈伤率差异不显著；日本新黑田五寸参胚性愈伤率和每个外植体分化的抗性株数随激素浓度的提高而呈上升趋势，2，4-D和6-BA浓度为1.0mg/L时胚性愈伤率和每个外植体分化的抗性株数最高，分别为87.50%和59株；日本新黑田五寸参以bar基因为标记基因、PPT作筛选剂时，分化较好。

Areas under theplasma acetaminophen concentration versus time curve,peak concentrations, and time to peak concentrationfor 50 mL and 300 mL ingestions were compared.

比较饮用50mL 和300mL 后，对乙酰氨基酚血浆浓度－时间曲线下面积、峰浓度到达峰浓度的时间。

A ink business card printing and membership card making insufficient concentration can be found at the four-colour, plus secondary as RGV, so that the secondary color of the left and right with the 2.0 to 2.2, so how to do well in addition to the four-colour shade, RGV special overlap in promoting concentration but does not produce the wrong network and the color interference, is an important work.

油墨制卡和会员卡制作浓度不敷题目，可以在四色之外，增上二不主色如RGV不一色，使二不主色具有2.0到2.2把握浓度，因此如何怠工好四色之外RGV出格色版，在重叠洋有晋升浓度功用，又不爆发错网及色彩帮助的不良本体，是处事上次要标的目的。

The extraction kinetics behaviors of technetium in TcO_4~-/HNO_3/TBP-kerosine, TcO_4~-/HNO_3-Zr/TBP- kerosine, TcO~4~-/HNO_3~-U/TBP- kerosine and TcO_4~-/HNO_3-Zr-U/TBP-kerosine system were studied by the device above.

已报道的锝萃取热力学研究表明，在Purex流程中对锝萃取行为影响最显著的因素是硝酸浓度、锆浓度以及铀浓度。

Larches of different ages have different net photosynthetic rate: the photosynthetic capacity of the young ones are bigger than that of the old ones; the stand density do not affect the net photosynthetic rate obviously; as far as the different stand classes are concerned, the diurnal changes of net photosynthetic rate is closely related to the photosynthetic active radiation. For the different layers of the crowns, there are greater ecological factors (illumination intensity, temperature, humidity etc.) on the upper layers than on the lower layers: the CO2 concentration of the lower layers is greater than that of the upper layers, which is indeed an exception; the net photosynthetic rate on the upper layers of the crown is generally greater than that of the lower layers. It showed that the CO2 concentration is not a main factor in the natural changing range of the CO2 concentration. Different directions of the crown have different photosynthetic active radiation, which is generally like exposed to the sun﹥North﹥in the shade of crown. However, the changes of net photosynthetic rate are not quite the same, which is North﹥exposed to the sun﹥in the shade of crown.

不同年龄的兴安落叶松净光合速率不同，年龄小的个体光合能力高于年龄大的个体；群团密度与净光合速率没有显著的相关关系；而对不同分级木，净光合速率日进程变化规律与光合有效辐射有着密切的联系；林内树冠不同层次各生态因子有上层大于下层的趋势，而CO2浓度在下层的含量高于上层，净光合速率上层普遍大于下层，说明在林内自然CO2浓度变幅内，CO2浓度不是主要因子；兴安落叶松树冠不同方向的光合有效辐射不同，一般向阳﹥北向﹥背阴，而净光合速率变化有北向﹥向阳﹥背阴的趋势。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。