abstract self compacting concrete (scc) is a new construction material in the world. the aim of this research is to construct self compacting concrete with high compressive strength using combination of nano silica and micro silica. for this purpose, nano silica, micro silica, portland cement type 2, superplasticizer (sp), and gravel and sand have been used. three different groups of samples wi...

objectives: a reduction in bond strength of composite to bleached enamel has been reported immediately after bleaching treatment. application of some antioxidant agents may decrease the adverse effects of whitening agents on bond strength and enhance composite bond to enamel. this study aimed to assess the effect of green tea, sodium ascorbate, sage and grape seed extract on bond strength of co...

â â â  avicenna and the arabic phonetics â â â â â  * mahmood shakib ansari â  * * alireza yusofi â â â  abstract â  avicenna, the iranian philosopher and sage, mostly famous for his scientific works such as law and the shifa has done some studies in arabic phonetics as well. besides pointing to some physical aspects of sounds in the above mentioned books, he has also written a monograph in ara...

â â â  features of didactic poetry from jaheli epoch to â  the present time â â â â â  javad gholamali zadeh* â  kobra roshanfekr** â â â  abstract â  one of the four types of poetry in the literature world is didactic. the purpose of didactic poetry primarily is to teach points about the world and the hereafter. didactic poetry has specific features that make it different from other types. thi...

â  â  â€˜eghterab’ in iraqi emigrants' poetry: the case of ahmad matar â â â jafar delshad * â seyyed adnan eshkewaree ** â  â abstractâ  the word ‘eghterab’ in human sciences has different concepts which could be classified into three groups: 1) westernization and tending to western culture or being alien with eastern authenticity 2) nostalgia and homesickness caused by being away f...

simulation and contrivance in hariri’s maghamat shaker amery * â  â abstractâ in the fourth century after hijra (a.h), many kinds of rhetoric arts became common and popular in literary texts. in that cultural atmosphere, the maghamat emerged. badi al-zaman al-hamadani was the first to write the maghamat in arabic literature in the second half of the fourth century (a.h). the principal recurre...

introduction: kisspeptin-13 (kp-13) is a novel endogenous factor, increases synaptic transmission and is involved in several behavioral functions such as anxiety, locomotion, epilepsy and avoidance learning. however, the role of this peptide on cognition has not been well clarified yet. here we studied the effect of kisspeptin-13 pretreatment on spatial learning and also interaction with cholin...

introduction: dopamine plays an important role in the central nervous system for modulating food intake. dopamine receptors are distributed within the hypothalamus, and expression of d1 receptors is significant in hypothalamic paraventricular nucleus (pvn). therefore, the aim of this study was to find if pvn-microinjected skf38393, d1 receptor agonist, may modulate food intake. methods: guide c...

introduction: aggressive behavior is a major issue in the field of mental health. pharmacotherapy is often used for the treatment of violent individuals. a neurochemical system most consistently linked with aggression is the gabaergic system. the aim of the present investigation was to examine the effect of muscimol (gabaa agonist) 250 and 500 ng/rat and picrotoxin (gabaa antagonist) 1.5 and 3 ...

introduction: herbal medicine and medical plants such as ziziphus vulgaris l. are widely used for treatment of diseases such as diabetes mellitus. in the present study, we have investigated effects of alcoholic extracts of z. vulgaris fruit on serum glucose, triglycerides, ldl, hdl and activities of aminotransferase enzymes in streptozocin (stz)- induced diabetic adult male rats. methods: herba...