成核

The reaction process in methanol solvent can be deduced from the computational results with CPCM solvent model and the supermolecular handling, namely the reaction involves four steps in the methanol solvent. The nucleophilic addition of trimethylamine to acraldehyde generates an enolate. Nucleophilic attack of the enolate on the aldehyde forms the carbon-carbon bond, followed by the proton-transfer process and the further elimination generating the product and liberating the trimethylamine catalyst.

对于CH3OH对反应体系的影响，可以综合考虑CPCM溶剂模型及超分子模型下的研究结果，即CH3OH溶剂中反应按四步进行，催化剂三甲胺首先与丙烯醛发生亲核加成，生成的两性离子中间体与甲醛发生类似于Aldol的醛醇缩合，形成碳-碳键，之后发生分子内质子转移，最后经E1cb消除得到产物，并释放催化剂三甲胺。

On the top of each nucleus lay a Golgi body-mitochondria area which later developed into an acrosome.

核的顶部出现一个高尔基-线粒体区，顶体由高尔基液泡演变而成。

2The studies on the appearance typomorphism, physical typomorphism, inner structure typomorphism and chemical typomorphism of the zircon and garnet, and the result of U-Pb isotopic age dating of zircon indicate that the zircons are meta-morphogenic genesis but two or three of them are magmatic genesis and most meta-morphogenic zircons have a basic magmatic zircon core which was generated in Stage of Yanshand and Indo-Chinese epoch. The genesis and origin of the garnet is very complicated. The garnets are main almandine with high Fe and Mg content and were proposed their souce rocks are mostly regional mid-degree-metamorphic rocks.

2研究锆石和石榴石的形貌标型、物性标型、内部结构标型以及成分标型特征和锆石U-Pb同位素测年结果表明，锆石除少数几个为岩浆锆石外，绝大多数是变质锆石，且中间多有形成于燕山-印支期的基性岩岩浆锆石残核；石榴石的成因及来源是比较复杂的，以铁铝榴石为主，且铁铝榴石中Fe、Mg的含量较高，推测其源区母岩主要以中级区域变质岩为主。

The nature of the nuclear transformation could be firmly established: the aluminium atom, for example, captures the alpha particle and is transformed, after expelling the proton, into an atom of silicon .

核蜕变的性质因此得到确立。例如，铝原子俘获。粒子，并在排出质子后蜕变成硅原子。

Myoblast differentiation and fusion in multinucleated muscle cells was studied in myoblasts growth in culture. The content ofcalpastatin in muscle wonld be related to cell membrane fusion.

在成肌细胞培养中，成肌细胞融合并分化形成多核肌细胞，其中钙激活酶抑制蛋白的含量与细胞膜的融合相关。

The largest chemical shifts were observed for the proton 1.48 ppm adjacent to the central pyridinium ring and para-protons 1.47 ppm with respect to the nitrogen of pyridinium.

在最终的亲核加成化合物2-F的芳香族区中的这些化学位移与9，10二氢-9-甲氧基-9-(4甲氧基苯基)-10-甲基吖啶的对应物是一致的，17b 这被证明是与过量的MeOH形成的9-苯基吖啶盐的加成化合物（支持信息中的图S7）。

Some useful fluorine-containing intermedi-ates were synthesized by the reaction of activated methylenecompounds or silyl enol ether with 2,2-dihydropolyfluoro-alkanoates or 2-hydropolyfluoroalk-2-enoates in the presenceof different bases.

进一步研究表明，在氢化钠的作用下，苯乙腈，苄基苯基甲酮也可以与2-氢多氟-2-烯酸乙酯发生亲核加成反应，苄基苯基甲酮的加成中间体经多聚磷酸环化，得到了间位氟烷基取代的α-萘酚衍生物。

To explore the existence and dynamic changes of the Golgi body-like structure in the log-phase and encysting trophozoites (6, 12, 18 hours) of Giardia lamblia, these trophozoites were stained with C6-NBD ceramide, a specific marker for Golgi body in eukaryotic cells, and then they were observed with fluorescence microscopy.

目的 探讨类高尔基体结构在蓝氏贾第鞭毛虫滋养体和成囊不同时段的存在情况及其动态变化机理。方法用可特异性标记真核细胞高尔基体的荧光染料C6-NBD神经酰胺，标记有活性的蓝氏贾第鞭毛虫滋养体及成囊6、12、18h虫体，并用荧光显微镜观察。

Multilayer latex particles with carboxylic polymer as core, polymer with low glass transition temperature and film-formable under room temperature as shell, and lightly crosslinked polymer as intermediate layer were prepared with unsaturated carboxylic monomers by multistage seed emulsion polymerization. Finally, the room-temperature-film-formable polymer particles with hollow structure were obtained via the alkali treatment to the multilayer latex particles.

采用羧基单体进行多阶段的种于乳液聚合，制备了内核为带羧基的聚合物、最外层为易成膜的低玻璃化温度聚合物、中间为轻度交联中间隔离层的多层核壳结构乳胶粒，最后通过碱处理制成了具有室温成膜性的中空结构聚合物微粒。

CAS radiation technology services company in Shanghai of the Chinese Academy of Sciences, the Ministry of radiation technology company in Shanghai's technology subsidiary, and the Chinese Academy of Sciences radiation technology company in 1989 by the Chinese Academy of Sciences of Nuclear Science and Physical and Chemical led the organization of the Chinese Academy of Sciences, owned by high-energy physics Shanghai by the atomic nucleus, Lanzhou Modern Physics, Plasma Physics in Hefei, the Changchun Applied Chemistry, Hefei Chinese Scientific and Technical University jointly established a joint venture and technical input, built for the cable factory in Yantai, Changshu Cable Factory, Liyang Cable Factory, Huaian cable factory Electronic contracting, such as the establishment of a special radiation cross-linking cable production lines and a number of radiation center and computer and new materials production base, by the relevant State Council ministries and provincial and municipal leaders on the importance and recognition, that was the first national high-tech Enterprise units, radiation technology company in 2002 to reform the merger into a new high-tech companies, and the Shanghai Technology Services Division of the Department of independent legal entities and by relying on the Chinese nuclear radiation and high-tech base for the successful trial production of 200-nanometer tetrafluoroethylene Ethylene special engineering plastics ultra-fine powder, consisting mainly expected to add new type of dispersing agent, detergent, antioxidant Kangfu agent, the preparation of a motor vehicle and vessel efficient use of lubricating oil additives series.

中国科学院辐射技术公司上海服务部系原中国科学院辐射技术公司在上海的技术子公司，而中国科学院辐射技术公司是1989年由中科院数理化局核科学处牵头组织中国科学院所属的高能物理所，上海原子核所、兰州近代物理所、合肥等离子物理所、长春应用化学所、合肥中国科技大学共同合资并投入技术建立的，建成后为烟台电缆厂、常熟电缆厂、溧阳电缆厂、淮安电缆厂等承包建立了电子辐照交联特种电缆生产线和一批辐照中心和计算机及新材料生产基地，受到国务院有关部委和有关省市领导的重视和表扬，并被国家认定的第一批高技术企业单位，2002年辐射技术公司进行体制改革合并成新的高技术公司，而上海技术服务部系独立法人单位并依托中科院原子核所辐照基地的高新技术及试制成功的200纳米聚四氟乙烯特种工程塑料超细粉，以此为主料加上新型的分散剂、清净剂、抗氧抗腐剂等，配制成汽车用和船舶用的高效润滑油系列添加剂。

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％。