二十一烷

The common chemical constituents were juniper camphor,1,3,3-trimethylcyclohex-1-ene-4-carboxaldehyde,borneol,α-curcumene,α-bisabolol,cis-caryophyllene,benzyl benzoate,methyl β,β-dimethylbenzenepropanoic acid ester,2,4-decadienal and heneicosane in the essential oil of the five cultivars' Hangjuhua.Among them,juniper camphor is most which were composed of 11.96%,10.51%,10.95%,13.28% and 10.77% of the total essential oil,and methyl β,β-dimethylbenzenepropanoic acid ester is second,which were composed of 1.51%,1.86%,2.52%,4.89% and 2.51% of the total essential oil,respectively.

5种栽培类型杭菊花挥发油中共有成分为1，3，3-三甲基环己-1-烯-4-甲醛、冰片、α-姜黄烯、α-甜没药萜醇、顺式石竹烯、桧脑、安息香酸苄酯、β，β-二甲基苯丙酸甲酯、2，4-癸二烯醛和二十一烷；其中桧脑含量最高，分别占挥发油总量的11.96%，10.51%，10.95%，13.28%和10.77%，为5种栽培类型杭菊花挥发油中最具特征的成分；其次是β，β-二甲基苯丙酸甲酯，分别占挥发油总量的1.51%，1.86%，2.52%，4.89%和2.51%。

To study the analysis method of samples including a combination of dimethylformamide, undecane and butanone in the air of workshop.

［目的］研究工作场所环境空气中二甲基甲酰胺、十一烷和丁酮混合物一次吸附、一次分离的定量分析方法。

We found that the bromohexadecane canbe transformed into dotriacontane in good yield under heating in thepresence of 〓,This is a new method for manufacturing dotriacontane.

在实验过程中发现在氧化银催化下，溴代十六烷加热发生偶联反应生成正三十二烷，这是一种制备正三十二烷的新方法。

SM6 and SM7 of uncrystal were analyzed through GC-MS, the results showedthat SM6 main contained unsaturated fatty aldehyde with fragrance, i.e.-2,4-decadienal(58%), tetradecanoic acid (55.78%), 2-decenal(50%), Phthalic acid isobutylundecyl ester(47%), 2, 4-Decadienal(41%), 2-Undecenal (31%), 2-Methyl-Z,Z-3, 13-octadecadi-enol(18.84%), and SM7 contained saturation alkanes, i.e. 1, 2-Benzenedicarboxylic acid, butyl cyclohexyl ester(23.90%), Triacontane(22.63%),Nonacosane(21.04%), Heptadecane(18.84%), Octacosane(13.58%). Toxicological experiments were done to insure the pigment safety.

并对紫红丝膜菌色素非晶体部分的黄色油状物SM6和紫色粉末物SM7作了GC-MS分析，结果显示SM6中主要为具有香气成分的不饱和脂肪醛，其中含量较高的依次为：-2，4-癸二烯醛(58％)、十四烷酸(55.78％)、2-癸烯醛(50％)、邻苯二甲酸异丁基十一烷酯(47％)、2，4-癸二烯(41％)、2-十一碳烯醛(31％)、2-甲基-Z，Z-3，13-十八碳二烯酸(18.45％)等；SM7中主要为饱和直链烷烃，其中含量较高的依次为：1，2-苯二羧酸丁基环己酯(23.90％)、三十烷(22.63％)、二十九烷(21.04％)、十七烷(18.84％)、二十八烷(13.58％)。

All indexes in cluytyl alcohol preparation group were better than pyroracemic acid and creatine group. Conclusions: Cluytyl alcohol preparation could enhance blood glucose contents, inhibit protein decomposition, advance sere testosterone levels and prevent myocardial damage. Therefore, Cluytyl alcohol preparation is a ideal drug of eliminating movement fatigue.

二十八烷醇制剂在提高运动性疲劳大鼠血糖水平，抑制蛋白分解，提高血清睾酮水平及防止心肌损伤等方面具有重要作用，是一种理想的抗运动疲劳营养补剂。

The measurement of apparent volume change is described during cure reaction of a new spiro ortho -carbonate, 3, 9, di (p-methooxybenzyl)- 1, 5, 7, 11-tetraoxspiro (5,5) undecaneand epoxy resin, and the volume expansion ratio of this new monomer is culcu-lated,and its applications are approached.

叙述了新的螺环化合物3，9-二-1，5，7，11-四氧杂螺环[5，5]十一烷与环氧树脂进行固化反应时，其表现体积变化率的侧定方法，推算了这种新单体的体积膨胀率。

A method is introduced for quantitative determination of 1,2-dichloride ethylane by gas chromatography with PEG-20M chromatographic column,FID and using undecane as internal standard.

介绍用气相色谱仪、以PEG-20M色谱柱和FID检测器对1，2-二氯乙烷进行的一种定量测定方法，其内标物选用正十一烷。

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。

The compound 3, 9-bis (2＇, 4＇, 6＇-tribromophoxy)-2, 4, 8, 10-traoxa -3, 9-dip- hosphospiro [5.5] undecane -3, 9-dioxide (HFR-1) was prepared with pentaeryth- ritol, phosphorus oxychloride and 2, 4, 6-tribromophenoxy soldium by esterifica- tion and condensation reaction.

以三溴苯酚钠、三氯氧磷、季戊四醇为原料，通过酯化和缩合两步反应合成了阻燃剂3，9-双(2'，4'，6'三溴苯氧基)-2，4，8，10-四氧代-3，9-二磷螺环-3，9-二氧[5.5]十一烷。

Octacosanol through the molecular distillation technology and high-vacuum separation technology at bee wax and rice bran extract, octacosanol the treatment of excessive calcium osteoporosis, treatment of high cholesterol and high LDL blood type as well as to promote blood and activation of cell cycle, and enhance endurance, energy and stamina, and many other physiological functions; taurine are the first in 1827 at the Ox bile found in a special amino acid, commonly found in natural biology of the human body in vivo an essential nutritional elements, known as "the fulcrum of the body's health balance."

二十八烷醇是通过分子蒸馏技术和高真空分离技术在蜂腊和米糠中提取，二十八烷醇对治疗血钙过多的骨质疏松，治疗高胆固醇和高脂蛋白血型以及促进血液循环和活化细胞，增强耐力、精力和体力等众多的生理功能；牛磺酸是1827年首先在牛的胆汁中发现的一种特殊氨基酸，普遍存在于自然界的生物体内人体内一种必不可少的营养元素，被誉为&人体平衡的健康支点&。

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％。