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Leaves. Result: Extraction temperature had effect on total flavonoids yield, and ethanol concentration had more obvious effect than extraction temperature. The more natural storage time, the less total flavonoids content, and the average descent rate was 24.74% per year. The flavonoids content from Lithocarpus polystachyus Rehd. gathered between August and October was the highest. The total flavonoids content was higher in the new leaves of Lithocarpus polystachyus Rehd.

结果：乙醇体积分数对总黄酮提取量有显著影响，提取温度对总黄酮提取量有影响；多穗柯自然存放时间越长，总黄酮含量越低，平均每年下降24.74%；不同季节采摘的多穗柯其总黄酮含量以8~10月最高；经对怀化多穗柯嫩叶和老叶中总黄酮的提取测定表明，多穗柯中嫩叶总黄酮含量最高，二年生最低。

Therewas a significant characteristic of the vertical distribution of soil enzyme activity,the relationship analysis indicated that there was a significant positive relationshipbetween the catalase activity and OM,and total N,and effective P、K,and ex-changible Mg,there was a negative relationship between the catalase activity andBase Situatiou percentage,and Total Contents of Base;the activity of the polyphe-nol oxidase was positively related with OM,and negatively related with total N andexchangible Ca clearly;The urease activity decreased with CPR increasing,and thechange of the former two kinds of soil enzyme actirity was not significantly withCPR increasing,It is possible to be related with maned disturbance frequently.

随着代次增加，有机质和交换性Ca下降明显；土壤的CEC和交换性酸分别下降了8.8—16.1%和6.8—18.5%，因此，其养分总量亦逐代降低，其中有机质下降幅度最大；土壤酶的活性具有明显的垂直分布特征，相关分析表明，过氧化氢酶活性与土壤OM、全N、有效P、K和交换性Mg有极显著的正相关，而与盐基总量、盐基饱和度呈明显的负相关。多酚氧化酶活性与OM呈显著负相关，与全N、交换性Ca有显著相关。脲酶活性则有随连栽代次增加而有下降趋势，前两种酶在代次之间变化不明显，可能与频繁的土壤干扰有关。

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。

The results were as follows the change of vitamin C content was a "trial apex"-shape curve, higher in young fruit,incrustation and maturation stages, lower in other periods; the total acid content was the highest in young fruit, after that, it decreased rapidly, maintained lower level, and reached lowest when the fruit matured; the total content of soluble sugar inosculated with the fruit development, it was high when the fruit development was quick, and low when the fruit development was slow; before 59 d after anthesis, the reducing sugar content was high in the total content of soluble sugar and after that ,the nonreducing sugar content was high; before 45 d after anthesis, free amino acid content was obviously correlated with protein content, and they inosculated with the fruit development;4559 d after anthesis, free amino acid content increased quickly, and protein content decreased gradually, this was also the most shaping period of the embryo and endosperm.

结果表明，Vc含量呈&三峰&型曲线，幼果时、硬核后和成熟时较高，其他时期较低；有机酸含量以幼果期最高，以后迅速下降并维持较低水平，果实成熟时含量最低；可溶性总糖含量与果实发育状况基本相吻合，果实发育速度快时含量较高，慢时较低；在谢花后59 d以前，可溶性糖以还原糖为主，之后以非还原糖为主；游离氨基酸和蛋白质含量，在谢花后45 d以前两者呈高度相关，且与果实生长速度相吻合，谢花后4559 d是胚和胚乳的主要形成期，此期游离氨基酸含量迅速增加，蛋白质含量持续下降。西北林学院学报21卷第5期张传来等金光杏梅果实发育期间主要营养成分动态变化研究

Total N increased significantly in the rhizosphere, hut total P and total K decreased. However, the available N, P and K in the rhizosphere behaved in an opposite way: with available N decreased but available P and available K increased in the rhizosphere except fur Phragmites communis Trin. Deficit of available N is the most significant, and accumulation of available P and available K were the least for Salsola nitraria Pall. among all seven halophytes.

在所有研究植物中，根际土壤中全N含量比土体的含量高，但全P和全K含量却比土体的含量低；根际土壤中有效态养分的变化则与全态相反，根际土壤中的有效N含量比土体中的都显著降低，除芦苇外，其他六种盐生植物根际土壤中有效P和有效K的含量都高于土体，但有效P的富集不及有效K富集的程度高。

This paper compared two kinds of rose families sorbus of different effective spots of total flavonids content. We get a better process of total flavonoids abstraction from the branch of Sorbus tianschanica,.Under the best process of total flavnoids ,two flavnoids were isolated from them. Preliminary affirmed two kinds of compounds belong to flavanone, two kinds of structure just substituent had a dissimilarity separately. This thesis was a part of a national natural science fund to subsidize.

除此，本论文还对新疆天山花楸的枝干总黄酮的提取工艺进行了研究，得到了最佳提取工艺，在最佳提取工艺的条件下对新疆天山花楸的枝干进行了系统的提取和硅胶柱层析，得到两种化合物，初步认定两种化合物属于二氢黄酮类，两种化合物的结构相似，只是个别取代基有所不同，本论文是国家自然科学基金资助项目。

The experimental results shows, if the ratio between MS-1 and OP-10 rangs from 1:1 to 3:l,and the total dosage of them is about 20% of Octamethylcyclotetrasiloxane (D4 ) in quality, we can obtain a kind of stable seeded emulsion of organic silicone modified acrylic ester emulsion. At the same time, if the ratio between MS-1 and Tetramethylammonium Chlorideis l:1.7,the total dosage is about 50% of D4 in quality; the ratio between MS-1 and Cetyltrimethylammonium Chlorineis 7:1, the total dosage is about 25% of D4 in quality,we can also obtain stable seeded emulsions. But if the complex emulsifier system is made of TMAC and OP-10, MS-1 and Peregal O or CTAC and Span-80, we can not synthesize any kind of satisfactory seeded emulsions.

实验结果表明：当MS-1与OP-10的质量比为1：1～3：1，总用量为八甲基环四硅氧烷(D_4)的20％左右时，可合成稳定性良好的硅丙种子乳液；MS-1与四甲基氯化铵的质量比为1：1.7，总用量为D_4的50％左右，MS-1与十六烷基三甲基氯化铵的质量比为7：1，总用量为D_4的25％左右时，亦能得到稳定的硅丙种子乳液；而TMAC与OP-10、MS-1与Peregal O以及CTAC与Span-80的复合体系作为乳化剂时均不能得到满意的硅丙种子乳液。

Different variabiles in economic system interact with each other. The long-term stability is analyzed on the basis of Gansu Province's GDP, total sum of expenditure, total sum of investment, and total sum of exports, and the thort=term fluctutation is analyzed on the basis of variables in ECM. Thus, the reality of Gansu Province's economy is revealed and corresponding countermeasures are put forward in a broad sense.

经济系统各变量之间相互制约、相互促进，以甘肃GDP、消费总额、投资总额和出口总额作为一个系统，检验该系统各变量之间是否存在协整关系，即研究系统各变量之间的&长期&稳定关系，进而基于ECM模型研究系统各变量的&短期&波动，揭示甘肃经济的本质特征，并提出相应的宏观经济政策建议。

Total work days, total overtime hours and total overtime hours on rest daysthe timecard for easy checking.

把上班的总天数，平时加班的总时数，休息日加班的总时数清楚写在工卡上，方便算工资和检查。

Total work days total overtime hours and total overtime hours on rest days should be clearly stated in the timecard for easy checking.

把上班的总天数，平时加班的总时数，休息日加班的总时数清晰写在工卡上，方便算工资和检查。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。