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In order to achieve a high concentration and high productivity of exopolysaccharide from Auricularia auricula, the effect of pH on the performance of EPS production in submerged fermentation was investigated. It was showed that the maximum yield of EPS （7.54 g/L） was obtained at pH 5.5, but the mycelial growth rate was enhanced at pH 5.0 and the maximum dry cell weight was

为了实现黑木耳深层发酵生产胞外多糖的高产量和高生产强度的统一，在7L发酵罐中研究不同pH对A.auricula分批发酵生产黑木耳多糖的影响。A.auricula细胞生长的最适pH为5.0，而黑木耳胞外多糖合成的最适pH为5.5。

The distributor plate at the bottom of the column. A constant high flow rate and head of water in the column and at the eductor inlet is maintained by circulating it through a pump and storage tank, in a closed loop.

用内环流中的泵和储水罐中的循环水来维持气馏柱和喷射口部分恒定的高速水流。

Results show that the best value of w is 7~10% and 5~7%, i is 0.08~0.2 A/cm^2 and 0.03~0.05 A/cm^2 respectively, during the electrolysis fluorination of pyridine and tributylamine; the addition of N-butyl mercaptan into the organic mixture can stabilize electrolysis process with its mass fraction 15~20% at best; impulse current polarization work status of low load is helpful to the electrolysis process and reduces corrosion rate of anode; electrolysis temperature is suitable at 0~20℃; electrobath can use electrolyte inner circulation structure, exterior circulation structure or blending structure.

结果表明：吡啶和N-三丁胺电解氟化的最佳值w分别为7%~10%和5%~7%，i分别为0.08~0.2A/平方公分和0.03~0.05A/平方公分；有机混合物中添加N-丁基硫醇可稳定电解过程，其质量分数最佳为15%~20%；采用低负荷的脉冲电流极化工况有利电解过程，降低阳极的腐蚀速度；电解温度0~20℃为宜；电解槽可采用电解液内循环、外循环结构，或其混合结构。

The results of in situ DRIFTS on propylene oxidation show that the allyl species originated from α-H abstraction of propylene were located at the wavenumbers of 1454 cm~(-1) and 1427 cm~(-1). The rate-determining step is the abstraction of an α-H abstraction from a lattice oxygen linked to a bismuth ion to form a π-allyl intermediate coordinated to a molybdenum ion. The metal-oxo group then attacks the allyl intermediate forming a σ-bonded oxygen-allyl species, which is in a rapid equilibrium with the π- bonded species. The σ-bonded species then transforms to acrolein by further abstraction of α-H. Such species as formate, carboxylate, carbonate transform to deep oxidation products. The acetone was derived from propylene by an enolic species at lower temperatures.

丙烯氧化反应体系的原位漫反射红外光谱研究结果表明，由丙烯脱氢生成的烯丙基中间物种吸收峰在1454cm~(-1)和1427cm~(-1)处；基于此提出了较完整的丙烯氧化反应网络：丙烯选择氧化生成丙烯醛主要经历丙烯脱除甲基上的一个H，生成烯丙基物种，该物种嵌氧生成σ-O络合物，脱氢得到丙烯醛前驱体，脱附生成丙烯醛；完全氧化产物是由催化剂表面上生成甲酸盐、羧酸盐、碳酸盐等形式的中间物种转化而成；较低反应温度下丙烯氧化生成丙酮，通过烯醇式中间物种氧化生成丙酮前驱体得到。

Results: At five weeks, the radiographically and manually determined fusion rate for autologous bone graft was 50％(4/8animals), compared with 100％ and 50％(8/8 and 4/8 anilmals) for groups in which fusions were done by using allograft and xenograft augumented with rhBMP-2. Xenograft+HA used in posterolateral intertransverse arthrodesis yielded a fusion rate of 0％(0/8 animals).

结果：手动试验示：1、自体髂骨组即对照组融合率为50％：2、各实验组融合率分别为：同种冷冻干燥异体骨+rhBMP-2组为100％；异种冷冻干燥骨+rhBMP-2组为50％；异种冷冻干燥骨+HA组为0％。X软片示：1、自体髂骨组即对照组X线评分均值为2.75分，融合率为62.5％；2、各实验组结果分别为：同种冷冻干燥异体骨+rhBMP-2组X线评分均值为4分，融合率为100％：异种冷冻干燥骨+rhBMP-2组X线评分均值为2.62分，融合率为62.5％。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

When the temperature was at 25℃, the EFS30 OPS two-step method had a blastocyst rate of 62.22%, the highest rate in all groups. After the morulae cultured from thawed embryos from the best straw group and OPS group were transferred, all groups have obtained offspring.

在25℃温度条件下细管法和OPS二步法玻璃化冷冻后的小鼠2-细胞胚胎，经培养发育至囊胚后，用H33342染色，在荧光显微镜下观察并进行细胞计数。

Reached slightly higher iodine delivery rates with a 300 mg l/ml iopromide solution than with 370 mgI/ml or iopamidol 370 mgl/ml.10The advantage of less concentrated (e.g. 300 mgl/ml) over more concentrated low osmolar contrast media in respect of injection and iodine delivery rates at room temperature and at 37°C was confirmed.11,12 In vivo, a slightly slower intravenous injection of concentrated contrast media may be compensated or even overcompensated because a higher concentration may be maintained after dilution by a given rate of blood flow.

到达递送以这 300 毫克 l│毫升 iopromide 解决评估的些微比较高的碘超过与 370 mgI│毫升或 iopamidol 370 mgl│毫升。10个比较不集中的（举例来说 300 mgl│毫升）结束更集中的低 osmolar 差别媒体的利益在注入和碘递送率方面在室温和 37 °C 被确认了。11，12在活泼地，一个集中差别媒体的些微比较慢静脉内注入可能被偿还或者平坦的 overcompensated 因为较高的集中可能在稀释之后被血流程的给定比率所维护。

This overstates the true growth rate because it includes government purchases, but official household surveys suggest that real spending is growing at a still-impressive rate of 9%.

这些夸大了真实的增长，因为它包括了政府销售，但是官方家庭调查表明真实的消费以仍然给人留下深刻印象的9%增长。

So the little impudent fellow would waste many an ear in a forenoon; till at last, seizing some longer and plumper one,considerably bigger than himself, and skilfully balancing it, he would set out with it to the woods, like a tiger with a buffalo, by the same zig-zag course and frequent pauses, scratching along with it as if it were too heavy for him and falling all the while, making its fall a diagonal between a perpendicular and horizontal, being determined to put it through at any rate;—— a singularly frivolous and whimsical fellow;—— and so he would get off with it to where he lived, perhaps carry it to the top of a pine tree forty or fifty rods distant, and I would afterwards find the cobs strewn about the woods in various directions.

就是这样，这个唐突的家伙一个上午就糟蹋了好些玉米穗；直到最后，它攫起了最长最大的一支，比它自己还大得多，很灵巧地背了就走，回森林去，好像一只老虎背了一只水牛，却还是弯弯曲曲地走，走走又停停，辛辛苦苦前进，好像那玉米穗太重，老是掉落，它让王米穗处在介乎垂直线与地平线之间的对角线状态，决心要把它拿到目的地去；——一个少见的这样轻桃而三心二意的家伙；——这样它把玉米穗带到它住的地方，也许是四五十杆之外的一棵松树的顶上去了，事后我总可以看见，那穗轴被乱掷在森林各处。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。