We report herein five new coordination polymers of general formula [LnNa(C(6)H(5)CO(2))(4)] where Ln = Y (6), Tb (7), Er (8), [DyNa(CH(3)CO(2))(4)(MeOH)] (9) and [DyNa(C(3)H(7)CO(2))(4)] (10). Single crystal structure analyses revealed that all compounds have a repeating unit containing one Ln(3+), one Na(+) and four monocarboxylate ligands (RCO(2)(-)) (R = -CH(3), -C(3)H(7), -C(6)H(5)). Compou...

Polymorphism, based on inheritance and dynamic binding in standard object-oriented languages, is one of the most powerful mechanisms available to the OO designer. It allows the system designer to customize the behavior of functions defined in particular base classes by suitably redefining, in derived classes, other functions that they invoke. At the same time, polymorphism, especially when used...

in present research, four of qajar prose works were initially selected as following: nasekh al-tavarikh of muhammad taghi lesan al-molk sepehr, masalek al-mohsenin of ‘abd al-rahim tabrizi, majma’ al-fosaha of reza gholi khan hedayat, and hezar-o-yek shab translated by ‘abd al-latif tasuji tabrizi. their most important writing and editing errors such as verbs, plural signs, words and structures...

the historical background of the dastgāh concept, and the process through which it replaced the maqām system, still remains a major question in the history of persian music. it is usually vaguely assumed that both concepts of the dastgāh and the radīf were introduced to persian music during the qajar era. the present paper is a first attempt to shed light on the issue through a historical music...

nematallaheyyeh doctrine in qajar period created some actions and reactions between the two powerful streams of jurdical and monarchy. study of the ups and downs of the triple process is one of the significant issues in the social history of the qajar era. in the present study, three streams mentioned interactions with each other, with regard to the doctrine nematallahyeh what caused of  stagna...

Let L be a quadratic lattice over a number field F . We lift the lattice L along a Zp-extension of F and investigate the growth of the number of spinor genera in the genus of L. Let Ln be the lattice obtained from L by extending scalars to the n-th layer of the Zp-extension. We show that, under various conditions on L and F , the number of spinor genera in the genus of Ln is 2 +O(1) where η is ...

Four groups of eight infants (3 weeks of age on average) were each habituated to one of four displays consisting of a grating of either low (0.4 cpd) or high (1.2 cpd) spatial frequency, whose central portion was covered up with a horizontal occluder which was either narrow (1.33 degrees) or broad (4.17 degrees). These habituation displays are referred to as LN (low spatial frequency grating an...

in terms of time, iranian mystic seyyed jaafar kashfi belongs to the era that is known as the end of the political thought era, from the perspective of decline theory. however, he is one of the great thinkers of the qajar era who in his two books entitled “tohfat al-muluk” and “mizan al-muluk” presented his political thought on the basis of mystical way. the main question in this research is wh...