Background: Methadone maintenance has received little scientific attention regarding neurocognitive effects. This study is aimed to assess the neuropsychological performance of methadone maintenance patients (MMP) compared to those healthy controls. Methods: Thirty-five MMP and 35 healthy controls, matched for age, gender, education and employment status, examined on a battery of tests aimed at...

In this paper metal-assisted chemical etching has been applied to pattern porous silicon regions and silicon nanohole arrays in submicron period simply by using positive photoresist as a mask layer. In order to define silicon nanostructures, Metal-assisted chemical etching (MaCE) was carried out with silver catalyst. Provided solution (or materiel) in combination with laser interference lithogr...

The Study of river water quality interation with lakes and dam reservoirs is important from anexploitation point of view. When river water with different densities enters a lake or dam reservoir,underflow density current phenomenon occurs. Because of the density, so understandingdifferent arrays of this phenomenon Seems necessary for checking erosion and sedimentationprocesses and their managem...

visual memory (1) Non-verbal 0.45 (.26) 1.73 Animal test (1) Verbal 0.43 (.23) 1.87 Arithmetic task (2) Verbal 0.65 (.16) 4.05*** Auditory digit sequence (6) Verbal 0.55 (.16) 3.46** Auditory serial addition task (1) Verbal 1.41 (.40) 3.53*** Backward digit span (14) Verbal 0.63 (.12) 5.34*** Backward letter span (1) Verbal 0.83 (.26) 3.19** California Verbal Learning Test (1) Verbal 0.18 (.16)...