نتایج جستجو برای: chemistry cycle

تعداد نتایج: 379390  

Journal: :iranian journal of catalysis 2013
maryam mashhadinezhad

maryam mashhadinezhad was born in rasht, guilan, i. r. iran. she received her b. sc in chemistry in 2009 from the university of guilan and her m.sc. in organic chemistry in 2011 from the same university. she is studying under the supervision of dr. farhad shirini for her ph. d. her research interests include the use of heterogeneous catalysts in organic reactions.

Mahmoud Zarei was born in Hamedan, Iran in 1986. 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. Also, he received his Ph.D. in organic chemistry (2017) under the supervision of Prof. Mohammad Ali Zolfigol. He is currently working towards his postdoctoral under the supervision of Prof. Mohamm...

طباخ شعبانی, امیر علی,

Content of iron cations in three biotite specimens of true trioctahedral mica were determined by Mössbauer spectroscopy, electron microprobe and wet-chemistry methods. International certified reference materials were analyzed simultaneously with micas to evaluate the accuracy of the wet-chemistry method. High precision Mössbauer spectroscopic Fe3+/Fe2+ ratios coupled with the electron microprob...

Journal: :int. journal of mining & geo-engineering 2015
asghar azizi seid ziaoddin shafaei mohammad noaparast mohammad karamoozian

ball mills are common grinding equipment in mineral processing industries. ball wear results from three mechanisms namely impact, abrasion and corrosion. of these, the corrosion mechanism is the least investigated, due to its chemical-electrochemical nature. therefore, the aims of this research were to investigate the grinding chemistry influence (slurry ph, solid percentage, water chemistry an...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

ABSTRACT Determining the habitability and interpreting atmospheric spectra of exoplanets requires understanding their physics chemistry. We use a 3-D coupled climate-chemistry model, Met Office Unified Model with UK Chemistry Aerosols framework, to study emergence lightning its chemical impact on tidally-locked Earth-like exoplanets. simulate atmosphere Proxima Centauri b orbiting in Habitable ...

Nitro catechols via 2 hydroxyl group and a nitro group have a wide range of functions including reagents form stable complexes with more than 40 elements in the fields of analytical chemistry, biochemistry, coordination chemistry, environmental chemistry, atrium exploration, organic chemistry, pharmacy, etc. Moreover, the nitro to amine recovery has a potential function in different fields. In ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
ramdane salhi

the main aim of this research is to determine optimal leaching conditions; eh, ph and complexing agent concentrations, for recovery of copper from hydroxide sludges such as those produced by electroplating shops, metal finishers, treatment of acid mine drainage, and industrial wastewater in general. this has been preceded by a theoretical approach and numerical and computer calculation. potenti...

Journal: :BioTechniques 1996
L T Parker H Zakeri Q Deng S Spurgeon P Y Kwok D A Nickerson

Taq DNA polymerases in which the phenylalanine is substituted by a tyrosine at position 667 (Taq F667Y) are members of a new class of DNA polymerases that incorporate chain-terminating dideoxyribonucleoside triphosphates (ddNTPs) much more efficiently than the wild-type Taq DNA polymerase. Improved incorporation of ddNTPs into DNA during cycle sequencing using AmpliTaq DNA polymerase, FS (Taq-F...

2012
Qiang Ma Hansheng Guo Roy G. Gordon Francisco Zaera

Given the high stability of amidines, they have long been considered good choices as bidentate ligands in organometallic compounds. Early uses of metal amidinates have been reported in catalysis to promote polymerizations and other related reactions. 3 More recently, metal amidinates have been developed as promising precursors for the deposition of solid thin films. 8 They have proven particula...

2003
Aaron L. Swanson Nicola J. Blake Frank Flocke Donald R. Blake F. Sherwood Rowland

[1] We report measurements of light (C2–C4) nonmethane hydrocarbons (NMHCs) and C1–C4 alkyl nitrates made at Summit, Greenland, over a full annual cycle (June 1997– 1998). The remoteness of the Summit camp from industrial source regions resulted in trends of these trace gases that showed a clear seasonal variation with low variability. Variability (calculated as the percentage 1-sigma deviation...

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