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1)  GFα-closure operator
GFα-闭包算子
2)  closure operator
闭包算子
1.
On the relations between poset matroids and closure operators;
关于偏序集拟阵与闭包算子的关系
2.
The rank function is introduced for poset greedoids on the base of poset matroids,and the closure operators are defined and a series of properties of closure operaters of poset greedoids are discussed.
在偏序集拟阵的基础上,引入了偏序集广义拟阵的函数,定义了偏序集广义拟阵的闭包算子,讨论了偏序集广义拟阵的一系列性质。
3)  closure operators
闭包算子
1.
The canonical extension of Zadeh-Fuzzy closure operators;
Zadeh-Fuzzy闭包算子的规范扩张
2.
An Extension Principle for L Fuzzy Closure Operators;
L-Fuzzy闭包算子的扩张原理
3.
On the basis of interior operators, closure operators and approximate operators, the compound and overlapping compound of interior operators, closure operators and approximate operators are studied in reflexives and transitive rough sets.
在内部算子、闭包算子和近似算子概念的基础上,研究了内部算子、闭包算子与自反传递 粗集中近似算子的复合以及交叉复合,得到了它们之间的一些关系。
4)  operator closure
算子闭包
5)  GFα-closed set
GFα-闭集
6)  pseudo-closure operator
伪闭包算子
1.
It is proved that the set of all open pretopologies,pseudo-interior operators and pseudo-closure operators on L are all complete lattices which are isomorphic to each other,the set of all pseudo-boundary operators and closed pretopologies on L are complete lattices which are isomorphic to each other.
在有逆序对合对应"′"的完备格(或称为DeMorgan代数)L上定义了开预拓扑、边界、伪内部算子和伪边界算子,并证明了L上的所有开预拓扑,所有伪内部算子和所有伪闭包算子构成了彼此同构的完备格。
2.
It is proved that closed pretopologies and pseudo-closure operators on a complete lattice are corresponding one by one.
引入了预拓扑分子格的概念(它是拓扑分子格的推广),并证明了完备格上的闭预拓扑和伪闭包算子是一一对应的。
3.
Firstly, we discuss some properties of two pairs of generalized approximation operators, and the relations among the topologies generated by generalized approximation operators, relative operators and pseudo-closure operators.
首先,本文探讨两对广义近似算子所具有的性质;广义近似算子、相对算子以及一个伪闭包算子所诱导的拓扑之间的关系;以及这些拓扑所具有的性质,比如连通性、分离性、可数性等。
补充资料:α,α,α,α',α',α'-六氯对二甲苯
分子式:C8H4Cl6
分子量:312.84
CAS号:68-36-0

性质:白色针状或粉末状结晶。熔点108-110℃。溶于二甲苯、石油醚、乙醇、植物油,不溶于水。无味,有特殊臭味,遇光、碱会缓慢分解而呈酸性。

制备方法:以混二甲苯为原料,先用98%硫酸磺化,使间二甲苯生成间二甲苯磺酸盐。从磺化反应物中分离出含邻、对二甲苯的油层,水洗、干燥,减压蒸馏出邻、对二甲苯。间二甲苯磺酸盐经水解可得副产品间二甲苯。由邻、对二甲苯经氯化即得1,4-双(三氯甲基)苯:在反应锅中投入邻、对二甲苯,再加入过氧化苯甲酰和三乙醇胺。加热到70℃后,在光照射下导入氯气,于70-80℃反应6h,再升温至100-120℃继续反应,至反应液相对密度达到1.560-1.580(65℃),即为反应终点,停止通氯,减压脱除余氯。降温至5℃,过滤,洗涤得粗品,重结晶,活性炭脱色得成品。

用途:抗血吸虫病药物。对肝吸虫病、阿米巴原虫病、疟疾以及肠道线虫有一定疗效。但对神经系统的不良反应较多见,且延迟反应持续较久。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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