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In today's experiment you will make a boomerang and learn about the aerodynamics that give boomerangs their special properties.

今天的实验中，你将自己动手做一个回力标，并了解回力标这种特质的空气动力学原理。

We optimized reaction system for labelling-antibody in which the optimal amount of the purified anti-Stx2B IgG conjugated with colloidal gold beads was 60μg/mL, the purified antibody for E.coli O157 was 57μg/mL, the optimal pH was 8.2, the size of colloidal gold partical was 20nm, the optimization of stabilizing agent was BSA, the optimization buffer was boracic acid buffer with pH 8.2, the optimization of preserving fluid and eluant was boracic acid buffer with pH 8.2 including 5mM NaCl-1%BSA, confining liquid for NC membrane was 0.01% PBST with 3%BSA, the amount of polyclonal antibody against E.coli O157 and Stx2 conjugated with colloidal gold beads for conjugate pad was 3μg respectively, the amount of anti-Stx monoclonal antibody for test line was 0.1μg and 1μg for E.coli O157, the amount of goat anti rabbit IgG for control line of both GICA were 1μg.

测定了胶体金颗粒的最优化反应体系：胶体金颗粒的大小为20nm；抗体与胶体金溶液结合的最佳pH约为8.2；最佳蛋白结合量分别为抗大肠杆菌O157 IgG为57μg/mL，抗重组Stx2B IgG为60μg/mL；最佳稳定剂为BSA；最佳缓冲液为pH8.2硼酸溶液；最佳金标保存液和洗涤液为5mM NaCl-1%BSA的pH 8.2的硼酸缓冲液；NC膜的封闭液为3%BSA的0.01mol/L PBST；Stx2试纸条和大肠杆菌O157试纸条的质控线上的羊抗兔IgG的多克隆抗体最佳点样量均为1μg，其检测线的抗Stx2的单克隆抗体的点样量为0.1μg、抗大肠杆菌O157的单克隆抗体的点样量为1μg，结合垫上的金标抗大肠杆菌O157和重组Stx2B多克隆抗体点样量均为3μg。

Bottled beer appealing by many factors, including labelling technology, operators, wine bottles, quality viscose and label.

瓶装啤酒的贴标效果由众多因素决定，包括贴标技术、操作人员、酒瓶、粘胶剂和标签质量。

To investigate the lead toxicity on water caltrop, activities of superoxide dismutase and peroxidase, ultrastructure in leaves of seedlings, treated with different concentration of lead solution, were analyzed.

不同浓度Pb(上标 2+)溶液处理菱幼苗后，考察了菱幼苗的超氧化物歧化酶、过氧化物酶以及叶细胞亚显微结构出现的变化，并初步探讨了Pb(上标 2+)的毒性机理。

Objective To investigate the eliminating ability of catechin to eliminate O(superscript - subscript 2) and OH.

目的：研究儿茶素直接捕获O(上标-下标 2)与OH的能力。

The asymptotic behavior of the weak solution is obtained when an enthalpy function is made in L(superscript 2 subscript +) and a differential inequality is proved after using Cauchy inequality, Poincare inequality and the definition of weak solution.

在L(上标2 下标+)空间上构造了一个熵函数，利用带ε的Cauchy不等式和poincare不等式及弱解的定义，推导出了此函数满足的一个微分方程不等式，通过求解微分方程，证明了弱解的渐近性问题。

Solid superacid SO(superscript 2- subscript 4)/Fe2O3 was prepared and used as a green catalyst to replace traditional vitriol in synthesis of cellulose acetate.

合成了固体超强酸SO(上标 2-下标 4)/Fe2O3，并将其用作浓硫酸的绿色替代催化剂进行纤维素的醋酸酯化反应。

With the catalyst TiO2/SO(superscript 2- subscript 4), 2, 4, N-trinitroanilinoacetic acid was synthesized from chlorobenzene and glycine with yield of 71.6%.

以纳米固体酸TiO2/SO(上标 2-下标 4)为催化剂，氯苯和氨基乙酸为原料直接合成了2，4，N-三硝基苯胺基乙酸，收率为71.6%。

The Chondrite normalized REE pattern shows typical enrichment of LREE, with ∑REE peaking up to 318 mg kg^(-1) in central layer of the profile. Both Ce and Eu have a similar trend of variation in the profile, i.e. positive anomaly-negative anomaly-positive anomaly from bottom to top. The highest ∑REE value occurs where negative Ce and Eu anomaly and relatively higher Fe(superscript 2+)/Fe(superscript 3+) values also occur.

剖面稀土元素分布型式为轻稀土富集型，∑REE在风化壳中部达到最高值318 mg kg^(-1)，剖面上Ce和Eu均呈正异常－负异常－正异常变化趋势，∑REE最高值出现在Ce和Eu负异常和Fe(上标 2+/Fe(上标 3+)较高层位，∑REE与Fe2O3显著正相关。

MIP and NIP were used as a solid-phase adsorbent, respectively. The type and amount of the eluting agent were optimized. The recoveries of standard addition are in the range of 86.7%~ 97.7%, with precision of 1.2%~ 3.8%. It has provided reference for the determination of citrinin.

两者分别作为固相吸附剂，通过洗脱剂种类和用量等优化后，在大米的加标回收实验中，样品的加标回收率在86.7%~97.7%之间，相对标准偏差在1.2%~3.8%之间，得到了比较理想的回收率，为桔青霉素的检测提供了参考。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。