三十烷

Compounds were identified by NMR etc, and they are veraflorizine 1, ebeinone 2, verticinone 3, isoverticine 4, trilinolein 5, phenanthrene 6, 2,5-dimethoxy-1,4-benzoquinone 7, tetradecane 8. All of them were isolated from this plant for the first time.

从安徽舒城县产舒城贝母的干燥鳞茎中分离得到了14个单体化合物，应用核磁共振等手段鉴定了8个化合物的结构，其中4个化合物为异甾体生物碱，4个为非生物碱，分别为：veraflorizine 1、鄂贝乙素2、浙贝乙素3、异浙贝甲素4、三亚麻油酸甘油酯5、菲6、2，5—二甲氧基苯醌(2，5-dimethoxy-1，4-benzoquinone)7和正十四烷8，这些化合物均为首次从该植物中分离得到。

A series of tri-block copolymers of styrene/tetradecyl methyl acrylate/3-methacryloxyl-propyl thimethoxyl silane was synthesized by atom transfer radical polymerization. The structures of those copolymers were characterized by means of gel permeation chromatography, infrared spectrum, and nuclear magnetic resonance (1H-NMR). Effect of tri-block copolymers on the mechanical properties of glass fiber/polypropylene composites was also investigated.

采用原子转移自由基聚合法合成了一系列新的三嵌段共聚物大分子偶联剂聚苯乙烯－b-聚甲基丙烯酸十四酯－b-聚3-甲基丙烯酰氧基丙基三甲氧基硅烷，通过凝胶渗透色谱、红外光谱和核磁共振(1H-NMR)证实了其结构，并研究了其对玻璃纤维／聚丙烯复合材料力学性能的影响。

An expansion monomer 3, 9-dihydroxymethyl-di (6-methyl-5 -hydroxyl)-2- heptanone-1, 5, 7, 11tetraoxaspiro [5, 5] undecane was synthesized and its volume change during polymerization is about +3.04%. Its prepolymer was also synthesized by toluene 2, 4-diisocyanide with it.

由三经甲基丙烷合成了螺环原碳酸酯单体3'、9'－二羟甲基－3'，9'-二乙基－1，5，7，11－-四氧杂螺环[5、5]十一烷单体（体积膨胀率＋3.04%）以及它的预聚物，并用其来改性环氧树脂B-63。

Relative retentions of 12 S-compounds on 4 different liquid phases were given.

给出了十二种硫化物在沙鱼烷、苯二甲酸二壬酯、磷酸三甲苯酯及亚氨基二丙腈四种柱子上的相对保留值。

Surfactant p-octyl polyethylene glycol phenyl ether (Triton X-100) or cetyltrimethylammonium bromide was mixed with n-hexane, n-hexanol, and water for preparing reverse microemulsion.

分别以聚乙二醇辛基苯基醚(Triton X-100)或十六烷基三甲基溴化铵为表面活性剂，与正己烷、正己醇和水构成反相微乳液。

Their extraction properties have been studied by metal picrates liquid-liquid extraction and the results show:By using three thio-heterocyclic compounds, twelve novel derivatives of thioalkoxycalix[4]arenes on the lower rim have been synthesized and structurally characterized by 1H NMR、13C NMR、IR and MS.

本文采用三种巯基杂环化合物对杯芳烃下沿进行修饰，得到了下沿含有杂环硫烷氧基的杯芳烃系类系列衍生物，并利用~1H NMR、~(13)C NMR、IR和MS对所合成的十二个未见文献报道的新化合物进行了结构表征。

The preparation,measure and tribological performance of ZnO nano-particles and octidecyltrichlorosilane self-assembled molecular film is studied in this paper. The main conclusions are reached as followed.

本文对ZnO纳米微粒及三氯十八硅烷(octidecyltrichlorosilane，简称OTS)自组装分子膜的制备、表征及摩擦学性能进行了研究，得出的主要结论如下：1。

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。