离心的

The invention discloses an InP quantum point preparing method, comprising the steps of:(1) mixing InCl3 with trioctylphosphine oxide, and preserving heat at 90-110DEG C to prepare a solution whose In content is 0.1-0.3mol/L;(2) raising temperature to 130-180DEG C, and charging argon gas;(3) injecting PSi(CH333 into InCl3-TOPO compound in the molar ratio of 1 to 1-1 to 2;(4) when the solution color turns into transparent red or orange, raising temperature to 260-270DEG C and preserving heat;(5) lowering temperature to 90-110DEG C and injecting dodecyl amine, decyl amine or mercaptan;(6) dissolving reacting mixture in nonpolar solvent to form transparent colloidal solution, then adding in polar solution until the colloidal solution is muddy, and centrifugally separating and obtaining deposits and supernatant; and (7) centrifugally separating the supernatant, where the above steps (1)-(5) are performed.

本发明公开了一种InP量子点的制备方法，其步骤为：①将InCl 3 与三辛基氧膦混合，在90～110℃保温制得In含量为0.1～0.3mol/L的溶液；②升温到130～180℃，通入氩气；③将PSi(CH 3 3 3 注射入InCl 3 -TOPO复合物中，其摩尔比为1∶1～1∶2；④待溶液颜色变为透明的红色或橙红色，将升温260～270℃保温；⑤降温到90～110℃，注入十二胺、癸胺或硫醇；⑥将反应混合物溶于非极性溶剂，形成透明的胶体溶液，然后加入极性溶剂，直至胶体溶液出现混浊状，然后离心分离获得沉积物和上层清液；⑦取上层清液进行离心分离。上述步骤①～⑤在保护气氛下进行。

The centrifugal tendency of a planet and the counterpressure arising from the centrifugal tendency of the other matter composing the vortex.

轨道乃由於行星的离心倾向，以及由於组合成涡漩的其它物质之离心倾向之反压力，两者之间的平衡而构成的。

Based on the comprehensive analysis and studies to main types of domestic and foreign equipments, it makes a design to the main parameter s of this new - type coal slurry centrifugal dehydrator.

阐述了筛篮倾角为20°的LLL1030新型煤泥离心脱水机的结构和主要技术特征，在综合分析国内、外主要设备类型的基础上，对该新型煤泥离心脱水机的主要参数进行了设计。

A study on these noun-centered exocentric constructions will not only deepen our understanding of Chinese phrases, rethink about the phrase-standarded opinions in the research of Chinese grammar, but also enrich and develop the theories of exocentric-endocentric construction and decategorization of nouns and then gain quite profound sense in these theories themselves and the applications of them.

研究这些名核离心结构不仅能深化我们对短语的认识，促使我们重新思考现代汉语语法研究中的短语本位论，更能丰富和发展离心结构、向心结构理论和名词非范畴化理论，深化相关的理论研究，具有相当明显的应用意义。

Bacteria which concentration more than or equal to 10~2/ml in CSF can be enriched effectively by means of centrifugalization when the relative centrifugal force is 5753xg and centrifugalization time is 15min and the rate of positive cultivation of pathogenic bacteria in clinical specimen can be improved by centrifugalization with high speed.

离心法不能使脑脊液中浓度低于10~2/ml的细菌浓集；在离心力5753×g离心时间为15分钟的离心条件下，采用离心法能使脑脊液中浓度大于等于10~2/ml的细菌得到最佳浓集，提高临床标本中细菌培养的阳性率。

This paper studied the post-treatment process of polyvinylidene fluoride emulsion consisting of coagulation, washing-up, centrifugalization and drying procedure.

结果表明，用凝聚剂破乳、离心分离的PVDF乳液后处理工艺是可行的，凝聚效果明显，凝集粒径达到了28—32μm；离心分离完全，洗涤母液的电导率小于5μS/cm，制得的PVDF制品色泽纯白。

Methods: A 5ml bone marrow was extracted from the lilac of human volunteers. By Percoll fluid and density gradient centrifugation, the MSC was obtained; after the cells filled the bottom of vessel, subcultured them, when they subculture in third generation, redigested them, 500 R/min centrifugate, alter the completed medium to chemical definition medium, examined the form change and prolifration of cells by invert microscope, toluidine blue stain、immunocytochemical stain and RT-PCR to test the type Ⅱ collagen mRNA and proteoglycan.

取健康成人髂后上棘处骨髓5ml，经percoll液分离后密度梯度离心，〓／ml密度接种培养，观察原代细胞的贴壁、增殖状况，细胞长满瓶底后进行传代培养；传至第三代细胞，重新消化后以500转／分钟轻度离心5分钟，〓／ml接种，改用化学限定培养基代替完全培养基培养，倒置显微镜观察细胞生长情况及形态变化，甲苯胺蓝染色观察诱导细胞合成细胞外基质中的蛋白多糖，免疫细胞化学染色检测ECM中Ⅱ胶原的蛋白合成，RT-PCR鉴定诱导细胞Ⅱ胶原mRNA的表达。

The present invention features that one kind of aerobiota is first used to ferment glucose, saccharified starch liquid, enzymolyzed cellulose liquid and other carbohydrate to produce glycerin, and one other kind of anerobic microbe is then used to convert glycerin into propylene glycol.

本发明的特征在于首先使用一种好氧微生物菌种发酵如葡萄糖、淀粉糖化液、纤维素酶解液等碳水化合物产生甘油，进而再通过另一种厌氧微生物菌种将甘油转化为1，3－丙二醇，其中第一步发酵所得到的发酵液可离心或过滤除去菌体，清液可直接进入第二步发酵或者经浓缩后作为第二步发酵的批式流加液，部分菌体可在连续发酵时循环使用；第一步发酵液也可不离心经灭菌后再进行第二步发酵。

Then a single blade of fan is used to analyze the effects of different length of blade and different chord length of blade on its inherent frequency for the purpose of the study in the course of design.

然后由离心风扇单个叶片入手，研究了叶片长度、叶片弦长对风扇单个叶片的固有频率的影响规律，为下一步研究离心风扇的结构参数提供了依据和思路。

Through differential centrifugation and sucrose density gradient centrifugation,tono plast vesicles were isolated from suspension-cultured Populus euphratica cells broken by mortar and pestIe,blender or ultrasonic homogenizer.The sensitivities of H+-ATPase to NO-3,VO3-4 andNaN3,as well proton pnmping activities of membrane-bound pyrophosphatases demonstrated that tonoplast vesicles mainly distributed on the interface of 0％～25％of sucrose.

为进一步研究液泡膜及H+-ATP酶在胡杨抵御盐胁迫中所起的作用，比较了研磨、捣碎和超声破碎三种细胞破碎方法，从悬浮培养的胡杨细胞中制备液泡膜微囊的效果；并用差速离心和不连续蔗糖密度梯度离心纯化了胡杨液泡膜微囊。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。