多酸的

There are 65 species of Chinese herbs with confirmed anti-HBV activityd, in which 16 probable active constituents are pointed out. They are arene, ketone derivatives, alicyclic carboxylic acid, aromatic carboxylic acid, ester, lactone, cyanide derivatives, heterocycle derivatives, carotenoids, anthraquinones, flavonoids, vegetable tannin, alkaloid, terpenoids, steroids and protein. Among them, the complexes of flavonoids, terpenoids, steroids and alkaloids are more abundant.

确定了具有抗乙肝病毒活性的中草药品种65种，其中含可能活性成分共16种，即芳烃、酮类衍生物、脂环族羧酸、芳香族羧酸、酯、内酯、氰类衍生物、杂环衍生物、类胡萝卜素、蒽醌类、黄酮类、植物鞣质、生物碱、萜类、甾类和蛋白质，而16种中以黄酮类、萜类、甾类和生物碱类成分为多。

The trial use of M-6 in Xifeng Luzhou-flavor liquor had achieved satisfactory effects compared with contrast samples: evident increment of ethyl caproate content, pure and mellow liquor flavor, enjoyable liquor aftertaste and clean liquor body, and better liquor quality.

在酿酒生产试用中，加红曲霉M-6生产的麸曲发酵酒比对照酒己酸乙酯高2倍多；在西凤浓香酒生产中试用效果比较明显，产酒己酸乙酯增高，酒窖香纯正浓郁、酒体醇厚爽净、回味好，质量优于对照样。

The former is to prepare polymolybdates coordinated' directly by organic ligands using Na2MoO4 and MoO3 precursors; The latter plays emphasis on exploiting a simple and effective routine to synthesize Keggin polytungstates in which the transition metal or Si acts as the heteratom by reaction precursor Na2WO4.We have synthesized a 4,4'-bipyridine bridging dumbbell-like polymolybdates a metatungs...

前者主要是制备有机配体键合的多金属钼酸盐；后者重点是探索出一个简易、有效的合成过渡金属或主族元素硅作杂原子的Keggin多金属钨酸盐的方法，然后通过变换过渡金属或有机配体的种类探讨对产物结构的影响，再对所得化合物的结构和组成通过物理测试手段进行表征，同时研究其在光、电、磁等方面的性质。

On the basis of molecular design and assembly, the polyoxometalate compounds supported by Keggin, Dawson, lacunary Keggin, and Silverton-type etc. polyanions on the basis of well-known and novel polyanions as building blocks were successfully synthesized by the hydrothermal technique, which are"decorated"or"bridged"by organic N-donor and/or O-donor ligands. The study on synthetic conditions and rules for these hybrid compounds and characterization by X-ray crystallography, spectroscopic, thermal, electrochemical and magnetic properties are carried out.

本文主要利用水热合成方法，从分子设计及组装的思想出发，借助不同N和含O的有机配体对多金属氧酸盐阴离子结构进行&修饰&或&桥连&，合成了一些以饱和Keggin结构、饱和Dawson结构、缺位Keggin结构和Silverton结构等阴离子为构筑模块的多金属氧酸盐化合物，研究了这些化合物的合成条件及规律并对它们的晶体结构、谱学性质、热性质以及磁性质进行了研究。

Prophenoloxidase is a key enzyme for mediating melanotic encapsulation of oocysts,which may be transformed into active phenoloxidase by limiting proteolysis.

而前酚氧化酶(Prophenoloxidase，PPO)是介导卵囊黑化包被反应的一种关键酶，活化后可催化酪氨酸羟基化为二羟基苯基丙氨酸，二羟基苯基丙氨酸和多巴胺可进一步氧化为具有活性的苯醌活性，苯醌即可介导蛋白交联并聚合成黑色素层固定、隔离或杀死入侵的病原体。

In the adipose tissue of obese pigs,the percentagesof myristic acid(C14:0),linoleic(C18:2)and linolenic acid(C18:3)were lower(P＜0.01),and that of palmitate(C16:0)and stearic acid(C18:0)were higher(P＜0.01),the percentages of the total SFA washigher,and that of total UFA and total PUFA were lower,than thatof lean lean pigs respectively.

肥胖型猪脂肪中豆蔻酸、亚油酸和亚麻酸含量较低(P＜0.01)，而棕榈酸(C16：0)和硬脂酸(C18：0)含量则较高。含量最多的油酸差异不明显。从各类脂肪酸总量来看，脂肪型猪的SFA含量较高，而UFA和PUFA含量较低(P＜0.01)。尤其是PUFA的差异最为明显。并进一步探讨了这种差异对脂肪最终品质的影响。

Watermelon has more citrulline in the edible part than previously believed, he says.

卡城德州农工大学水果蔬菜发展中心负责人哲学博士对Bhimu Patil对 WebMD的记者说：&我们早就了解西瓜含有瓜氨酸，但直到最近，科学家们还认为大部分的瓜氨酸是在瓜皮里，其实西瓜的瓜瓤含有更多的瓜氨酸。&

Japonicus infected by BMNV (baculoviral mid-gut gland necrosis virus ) were determined quantitatively by gas chromatography. Results: C16∶0 (20.64%), C18∶1 (23.07%) and C18∶2 (21.72%) were found to be the major fatty acids in mid-gut gland of healthy P.

结果： 养殖健康斑节对虾中肠腺中的饱和脂肪酸以棕榈酸为主（20.64%），一烯酸以油酸含量最高（23.07%），多烯酸则以亚油酸所占的比重最大（21.72%），这3种脂肪酸的总量达65.43%。

The volatile compositions in liquid CO2 hop extract or compressed hop of homemade SA-1 hop were analyzed by headspace so- lid-phase micro extraction. Multiple indexes including total resin, soft resin, hard resin,α-acid,β-acid, and polyphenols in SA-1 hop were measured and then the parameters of SA-1 influencing beer brewing were compared with foreign quality hop SAAZ.

采用顶空固相微萃取方法对国产香型啤酒花品种札一的压缩花和液态CO2浸膏中的挥发性成分进行了分析，并测定了该啤酒花品种的总树脂、软树脂、硬树脂、α-酸、β-酸和啤酒花多酚等多项指标，并与国外优质香型花SAAZ的各项影响酿造性能的参数进行了比较。

Lid-phase micro extraction. Multiple indexes including total resin, soft resin, hard resin,α-acid,β-acid, and polyphenols in SA-1 hop were measured and then the parameters of SA-1 influencing beer brewing were compared with foreign quality hop SAAZ. The results suggested that SA-1 hop had lower content of α-acid（3.40 % w/w,its content of β-acid was 3.50 % and co-humulone ratio was 23.92 % rel.

采用顶空固相微萃取方法对国产香型啤酒花品种札一的压缩花和液态CO2浸膏中的挥发性成分进行了分析，并测定了该啤酒花品种的总树脂、软树脂、硬树脂、α-酸、β-酸和啤酒花多酚等多项指标，并与国外优质香型花SAAZ的各项影响酿造性能的参数进行了比较。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。