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Ringel realized positive parts of semisimple Lie algebras in the framework of Ringel-Hall algebras. The main result of this thesis is to build a geometric and topological model over triangulated categories such as derived categories and stable module categories of repetitive algebras. We defines a Lie bracket by Euler characteristics of constructible subsets and thus realizes infinite dimensional Lie algebras of various types with non-degenerated bilinear form.

本文的主要结果是在导出范畴和重复代数的稳定模范畴等三角范畴水平上建立相应的几何-拓扑模型,并利用相应可构集的欧拉示性数定义了一个Hall代数的交换子乘法,从而在三角范畴水平上实现了一大类无限维李代数的整体构造,并且这类李代数本质上都具有非退化的不变双线性型。

Regarding a portable facility as a crunode in the network is the common way, and the requirement of synchronization is to exchange data between different desktop facilities and portable facilities.

通常的做法是把一台掌上设备看作是网络上的一个节点,同步的要求就是能够和不同的桌面设备以及掌上设备进行数据交换。

In this paper we combined three chromatographic separation and purification technique such as affinity chromatography, ion exchanger chromatography and hydrophobic interaction chromatography to develope a new technology of stimutaneous extraction of three enzyme from pancreatin. We optimized the technology by studying the methods of purification and assured the technology as: The crude extraction from the dissolution of Pancreatin is directly absorbed on the DEAE gelose fast flow columnEquilibrating buffer is 0.01mol/L NaoAc-HoAc buffer(pH4.5; eluting buffer is 0.2~0.35mol/LNaCl in 0.01mol/LNaoAc-HoAc buffer (pH4.5), and then be eluted by two steps to acquire the peak of kallikrein.The solution which can"t be adsorbed by DEAE gelose fast flow column is adsorbed on affinity chromatographic column Equilibrating buffer is 0.01mol/LTris-HCl buffer(pH7.5, eluting buffer is 0.5mol/LNaCl in 0.01mol/Ltris-HCl buffer(pH7.5)and then be eluted by one step to acquire the peak of trypsin.The solution which can"t be adsorbed by is pretreated with 30%~80%(NH_4)_2SO_4 fractional precipitation, the deposition of the precipitation is dissolved to beabsorbed on phenyl gelose fast flow columnhydrophobic interaction chromatography condition is Equilibrating buffer is lmol/L(NH_4_2SO_4 in 0.01mol/LNaoAc-HoAc buffer(pH4.5), eluting buffer is 0~0.6mol/L(NH_4)_2SO_4 in 0.01mol/LNaoAc-HoAc buffer (pH4.5) and then be eluted by two steps to acquire the peak of chymotrypsin.

本研究考察了各种纯化方法,将离子交换层析、亲和层析和疏水层析三种分离纯化法相结合,建立了激肽释放酶、胰蛋白酶和糜蛋白酶三酶的联产工艺:胰酶用pH4.5醋酸缓冲溶液提取后,粗提液直接上DEAE-琼脂糖快胶柱吸附平衡缓冲液:0.01mol/LNaoAc-HoAc缓冲液(pH4.5,洗脱缓冲液:0.01mol/LNaoAc-HoAc缓冲液(pH4.5)含0.2~0.35mol/LNaCl分两步洗脱,收集激肽释放酶的洗脱峰;DEAE-琼脂糖快胶的未吸附液上亲和层析柱分批吸附平衡缓冲液:0.01mol/LTris-HCl缓冲液(pH7.5,洗脱液:0.5mol/LNaCl溶液,一次洗脱,收集胰蛋白酶洗脱峰;最后,亲和层析未吸附液用30%~80%硫酸铵分级盐析处理,沉淀溶解后用上苯基—琼脂糖快胶吸附平衡缓冲液:0.01mol/LNaAc-HAc缓冲液(pH4.5含1mol/L(NH_4)_2SO_4,洗脱缓冲液:0.01mol/LNaAc-HAc缓冲液(pH4.5)含0~0.6mol/L(NH_4)_2SO_4,分两步洗脱,收集糜蛋白酶的洗脱峰。

It was found that the main active center is the iron ions which are in the exchange sites in addition to heteroatom FeZSM-5 itself.

进一步研究发现杂原子FeZSM-5分子筛催化剂上主要活性中心是处在阳离子交换位上的铁离子,同时,由于铁原子进入分子筛骨架,使杂原子FeZSM-5本身也具有一定的反应活性。

Theoretically, the retention equation is derivated for organic amphoteric compounds on cation-exchange column with hydronium ion as eluent ion, in terms of acid -base equilibrium and ion-exchange equilibrium.

首次从理论上导出了有机两性物质在阳离子交换柱上以H〓为淋洗离子时的保留关系式并用实验加以了证实,以此估算了两性物质的碱性离解常数K〓。

The present research work focuses on two aspects. On one hand, the most successful alkaloid-derived ligands have been attached to a soluble or insoluble support covalently, but additional OsO〓 is necessary to maintain the consistent catalytic activity during the reuse of supported chiral ligand in the next AD reaction. On the other hand, immobilization of osmium tetroxide based on microencapsulation, ion-exchange techniques, and osmylation of resins has made it possible to recover and reuse of the osmium, but failed to recover the chiral ligand at the same time.

目前的研究主要集中在两个方面:一方面,将手性配体共价键合到不溶或可溶性载体上制成负载手性配体,但在重复使用负载配体时必须补充OsO〓,才能保证催化活性不降低;另一方面,将OsO〓包裹在高聚物微囊内,或运用离子交换技术或共价键合的方法将OsO〓固载在树脂、硅胶或层状双金属氢氧化物材料上,但手性配体却不能同时回收。

More generally, if it admits an r-parameter volume-presenving commutable symmetry, then the reduced flow preserves the corresponding -dimensional volume form.

更一般地,在n维流形上,具有r个可交换保积对称的保积流能够约化为维商空间上的保积流。

The results showed that all of them could detect the presence of ZFY DNA sequences except a 46 XX"male"and a 46 XX hermaphrodite, our findings confirmed that Ferguson-Smith〔1966〕 forwarded the hypothesis that the X-Y intercharge model for XX maleness can be regarded as an abnormal exchange initaited in a region proximal to TDF and extending to the telomere,and,also strongly suggested that ZFY gene palyed an important role in sex determining of human.

结果除一例46XX两性畸形,一例46XX&男性&外,余均能检测到ZFY DNA序列(ZFY DNA序列存在于46XX真两性畸形和45XO Turner's综合症,在国内外尚未见报道)。证实了1966年,Ferguson-Smith提出的理论:在父源减数分裂期间,X-Y发生不等交换,导致Y染色体DNA插入性易位。XX男性是由于Y染色体上的TDF基因转移至X染色体上所致。

In Chapter 5,we obtain a boundedness results of commutators of convolution opera-tors on MK_~according to the corresponding boundedness of the sublinear operators on the homogeneous Morrey-Herz spaces.

第五章通过次线性算子在齐次Morrey-Herz空间上的有界性导出了一个卷积型交换子在MK_~上有界的结果。

The strategic alliance strategy is by nature results of changinginterfirm arrangements, which is neither different from arm's length arrangements and nor from hierarchical arrangementswithin the firm, and unsubstituted product with inside hierarchy and outside property rights transaction.

合资战略本质上是企业组织内部化战略的结果,即在组织形式上趋向于母子公司之间关系,价值创造呈降低成本导向机理;战略联盟本质上是企业间关系变化的结果,这种企业间关系以协调为特征,既不同于市场交易关系,也不同于组织内部的层级关系,是内部层级市场和外部产权交换不可替代的产物,价值创造呈潜在的利润导向机理。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。