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In the titration experiment of NMR and IR spectroscopy, we can understand how sensors binding with metal ions: the two carbonyl group and crown ether group cooperated in binding with metal ions. Furthermore, by altering the "oxygen" atoms of crown ether to "sulfur", we can change the binding affinity to the soft metal: cupper. It shows 60-fold enhancement of fluorescence.

在化合物2中，我们引进了硫原子在冠状醚中，则应对电子密度较低之金属有较好的结合能力，实验结果显示了此分子对铜离子有相当好的选择性和结合能力，萤光增加可达60倍；同时由红外光吸收光谱和核磁共振光谱滴定实验可确知，香豆素衍生物上的两个羰基对金属离子的选择性及结合上扮演相当重要的角色。

The present invention relates to a coating composition comprising; A at least one polyester oligomer prepared from reactants comprising a 20 60 wt.% of at least one polyol, b 5 30 wt.% of at least one polycarboxylic acid selected from the group of cyclic polycarboxylic acids, the esters or the anhydrides thereof, wherein the carboxyl groups are separated by 3 carbon atoms or less, and from the group of alpha , beta -saturated acyclic polycarboxylic acids, the esters or the anhydrides thereof, and c 20 60 wt % of at least one monocarboxylic acid, the sum of the wt.% indicated for the reactants,, and always being 100 wt.%, and the oligomer being a low-viscosity oligomer having a weight average molecular weight Mw of less than 5,000, and a hydroxyl number in the range of about 200 to about 400 mg KOH/g oligomer, and B at least one polyisocyanate.

本发明涉及一种包含如下组分的涂料组合物：A至少一种由包含如下成分的反应物制备的聚酯低聚物：a20-60wt％至少一种多元醇，b5-30wt％至少一种选自其中羧基被3个或更少碳原子隔开的环状多元羧酸、其酯或酸酐以及选自α，β-饱和的无环多元羧酸、其酯或酸酐的多元羧酸，以及c20-60wt％至少一种一元羧酸，其中反应物、和的wt％之和总是为100wt％，所述低聚物是重均分子量Mw低于5000且羟基值为约200-约400mg KOH/g低聚物的低粘度低聚物，以及B至少一种多异氰酸酯。

In chapter 1 ,on one hand ,we give some sufficient conditions for a finite group to be supersolvable and nilipotent by using the properties of π-supplemented subgroups;For example: Theorem 3 Let G be a group, 2 ∈π, if every subgroup of G of prime order is contained in SE, every cyclic subgroup of G of order 4 is π-supplemented in G, then G will be supersolvable.

在第一章中，一方面我们利用π-可补子群的性质给出了有限群为超可解群及幂零群的若干充分条件；例如：定理3设G是群，2∈π，如果G的每个素数阶子群包含在SE中，G的每个4阶循环子群在G中π-可补，则G为超可解群。

The East Asian Endemic Cyprinid group is a group of cyprinid fishes whose speciation may be linked to the evolution of East Asian monsoon which has been affected by uplift of the Qinghai-Tibetan plateau.

东亚特有鲤科类群是鲤科鱼类在适应青藏高原隆起过程中形成的东亚季风性气候下而分化的一个类群。

So the task of artificial contrast which was finished in scores of workdays or even hundreds of workdays before can be finished in several minutes by using this system now. The combination of dactylography with legal medicine not only can identify blood group and test ABO blood group of the left fingerprints...

指纹学与法医学技术相结合，不但可以进行血型鉴定、测定遗留指纹ABO血型，而且可以通过与法医DNA技术的结合，对于那些较为模糊或指纹特征点较少或不完整的指纹进行个人识别。

The influence of oligosaccharides biocide on bacterial colony in the stem of Chinese Cotton 12 was determined by routine separation mathod.The results of two groups experiments indicated that the number of bacterial colonies in the cotton stem,wtich were treated with the oligosaccharides,was lowerthan the control group;and it dropped significantly(8.0×107CFU/g)after treating 10 days,while the control group was 4.2×109CFU/g.This results illustrated that the oligosaccharides biocide could control the cotton damping-off,and as a equaled 0.05,the oriental difference was significant.

通过常规分离方法，测定寡聚糖生物农药对中棉12品种的棉茎体内细菌群落数量的影响。2批实验结果表明喷寡聚糖后棉茎体内细菌群落数量均低于对照，喷寡聚糖10 d后棉茎体内细菌群落数量显著下降(8.0×107CFU/g)，对照4.2×109CFU/g；寡聚糖生物农药对棉花苗期病害的防治效果实验结果表明：寡聚糖生物农药对棉花苗期立枯病有一定的防治效果，且在α=0.05水平差异显著。

The results on the effects of micronucleus in erythrocytes of Danio rerio induced by bensulfuron-methyl at different times and different concentrations showed that the MN rate of control group was 0.0103%, the highest MN rate of experimental group reached to 0.372%, it also indicated that bensulfuron-methyl herbicide had genetics toxicity to Danio rerio.

不同处理浓度和染毒时间对斑马鱼红细胞微核形成的影响试验表明，对照组红细胞微核细胞率为0.010 3%，处理组红细胞微核细胞率最高达0.372%，说明除草剂苄嘧磺隆对斑马鱼具有遗传毒性作用。

Besides protection maloperation model, this paper thought over other dependent outage models such as stuck breaker, component-group outage, station-originated outage and common cause outage; the article chose initial system state of cascading failure by using of function group decomposition technique and event tree analysis, provided simplification principle and processing method of continual fault process analysis, then proposed one new probabilistic risk assessment method for cascading failure.

该文在分析中考虑了保护误动、断路器拒动、元件组停运、电站相关停运、共因停运等相关停运模型，利用功能组分解技术和事件树分析法，选择连锁故障的初始系统状态，提出简化相继故障过程分析的依据和处理方法，进而提出一种新的连锁故障概率风险评价方法。

Methods Forty eight cases of senile dementia patients with deglutition disorder were randomly divided into control group (common diet, 24 cases) and fresubin energy fiber group (fresubin energy fiber nutrition, 24 cases). All patients were treated by comprehensive intervention therapy. The deglutition function(water-drinking test), body mass index, triceps skin fold, mid-arm circumference, mid-arm muscle circumference, hemoglobin, total protein, albumin, and the days of infection within 6 months were measured.

体例 选择合并吞咽功效障碍的老年性痴呆患者48例，随机分成瑞先组和斗劲组，接纳综合干与治疗后，不雅观察患者的营养状况，指标搜罗：体重指数、丈量肱三头肌皮褶厚度、上臂中围和臂中部肌围，以及6个月内发生相关感染的天数及其吞咽功效的改良情形(参考洼田氏饮水试验评价分级)等相关指标转变。

For example in a Yi ethnic tribe in Yunnan Province, there was a group of people who knew the common law very well and who acted as executors of the law, revered by the ethnic group as Degu or Mosa.

例如在云南省彝族部落里，有一个熟悉习惯法并作为执行者的群体，他们被本民族人尊称为"德古"或"莫萨"。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。