some n¬-acyl-n'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. the structures of synthesized compounds have been characterized by ir, 1hnmr spectral studies. the synthesized compounds 5(a-f) have been screened for antibacterial activity. the effect of the structure of the investigated compounds on the antibacterial activ...

in order to gain a better understanding of the chemistry of methanl-to-hydro-carbon conversion, it is necessary to determine the nature of the primary reaction products. experiments carried out in this work on h-zsm-11, using a continuous flow reactor linked to an on-line gas chromatograph demonstrated that ethylene and methane are the primary reaction products. the results obtained using solid...

polycyclic aromatic hydrocarbons (pahs) are a class of compounds consisting of more than twobenzene rings fused in a linear, angular, or clustered arrangement and do not contain hetero atomsor carry subsistent. pahs originate from various sources. they are primarily formed byincomplete combustion of carbon-containing fuels such as wood, coal, diesel, fat, or tobacco. thepresent study reports an...

Groundwater chemistry data are normally scarce in remote inland areas. Effective statistical approaches are highly desired to extract important information about hydrochemical processes from the limited data. This study applied a clustering approach based on the Gaussian Mixture Model (GMM) to a hydrochemical dataset of groundwater collected in the middle Heihe River Basin (HRB) of northwestern...

Hassan Sepehrmansourie was born in Hamedan, Iran in 1994. He received his B.Sc. in Applied Chemistry (2017) from Bu-Ali Sina University, Iran. He received his M.Sc.in Organic Chemistry (2019) under the supervision of Prof. Mohammad Ali Zolfigol. Also, He was also accepted for a Ph.D. in organic chemistry at the Bu-Ali Sina University in the same year. His research interest is the synthesis, cha...

The concept of metric dimension is widely applied to solve various problems in the different fields computer science and chemistry, such as networking, integer programming, robot navigation, formation chemical structuring. In this article, local fractional (LFMD) cycle-based Sierpinski networks computed with help its resolving neighborhoods all adjacent pairs vertices. addition, boundedness LFM...

mahmoud zarei was born in hamedan, iran in1986. he received his b.sc. in pure chemistry (2010) from islamic azad university arak and m.sc. in organic chemistry (2013) at bu-ali sina university, iran. he is currently working towards his ph.d. under the supervision of professor mohammad ali zolfigol. his research interest is catalysis, including the application of homogeneous and heterogeneous ca...

Saeed Baghery was born in Amol/Mazandaran (Iran) in 1985. He completed his B.Sc. in Pure chemistry in 2009 from Islamic Azad University of Amol, Mazandaran, Iran. He was graduated from M.Sc. degree under the supervision of Dr. Seyed Mohammad Vahdat in Organic Chemistry from Islamic Azad University of Amol, Mazandaran, Iran. He is currently Organic Chemistry Ph.D student under the supervision of...

Vahid Khakyzadeh was born in Hamedan, Iran. He received his B.S. degree (Pure Chemistry) and M.S. degree (Organic Chemistry) from Bu-Ali Sina University, Hamedan, Iran, at 2008, 2010 respectively under supervision of professor Mohammad Ali Zolfigol. He is currently working on his Ph. D. under the supervision of professor Mohammad Ali Zolfigol in organic chemistry. Among his recent awards, Vahid...

With the intensive research on ultrafast dynamics in physics and chemistry, single-shot measurement of ultrashort time change has become increasingly important. The most advanced oscilloscope with time-lens technique possesses subpicosecond resolution, while interferometer can probe event within one optical cycle. However, difference beyond cycle but less than time-lens’ resolution is still ina...