Fused aromatic networks with the different spatial arrangement of structural units

a structural survey of the polish posters

تصویرسازی قابلیتهای فراوانی را دارا است

the effect of task cognitive complexity and time limit on the performance of the learners with different proficiency levels in second language writing skill

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

Cyclobutene - Fused Aromatic Molecules

The Diels-Alder cycloaddition of dimethyl-1 ,2-cyclobutenedicarboxylate to a 1,3-diene results in the formation of an adduct which can subsequently be decarboxylated and dehydrogenated to provide a cyclobutene-fused benzenoid system. The use of · appropriate dienes has led to the preparation of a series of paraand metabis-annelated benzenes. Variations in the 1H and C NMR and in the UV spectra ...

Analysis of the effect of spatial arrangement on the level of acoustic comfort in contemporary apartment housing units (Case study: Apartment housing in Tabriz)

Introduction: What is neglected by designers and even users in today's housing, especially apartment housing in Iranian cities, are various aspects of physical comfort, including sound comfort. Noise is defined as unwanted noise, in other words, extra noise is an annoyance in the living and working environment. This ambient noise should be controlled as much as possible and reduced to an accep...

evaluation of the spatial arrangement of the biologic structure