نتایج جستجو برای: spectroscopic studies

تعداد نتایج: 1463794  

Journal: :Bulletin of the Chemical Society of Japan 1967

Journal: :IOSR Journal of Pharmacy (IOSRPHR) 2012

Journal: :The Journal of Chemical Physics 2020

Journal: :physical chemistry research 2016
hamid dezhampanah

interactions of cationic tetrakis (n,n´,n´´,n´´´-tetramethyltetra-3,4-pyridinoporphyrazinatocobalt(ii) (co(tmtppa)) with synthetic polynucleotides, poly(a-t), poly(g-c) and calf thymus dna have been characterized in 5 mm phosphate buffer, ph 7.2, by optical absorption and fluorescence spectroscopy. the appearance of hypochromicity effect and the red shift in uv-vis spectrum of porphyrazine was ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2002
ali reza rezvani hassan hadadzadeh

six new complexes of the type trans-[lco((do)(doh)pn)l'] where (do)(doh)pn= n2, n2'-propanediolbis (2,3-butanedione 2-imine 3-oxime), l-cl¯ and l'=mono-anaion of phenylcyanamide (pcyd), 2,5-dichlorophenylcyanamide (2,5-cl2 pcyd), 2,4-dimethyl pehylcyanamide (2,4-me2 pcyd) and l=l'=pcyd, 2,5-cl2 pcyd, 2,4-me2 pcyd, have been synthesized and characterized by elemental analysis, spectroscopy and c...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2002
amanollah aminzadeh sima shahabi l.j. walsh

ftr-raman spectra of human dental enamel, both laser-irradiated and untreated, are reported. spectra are compared with hydroxyapatite. it is evident that unlike the co2 laser, the nd/yag laser does not induce any chemical change in dental enamel.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
muhammad aqeel ashraf, mohd jamil maah, ismail yusuf,

cr(iii), co(ii), ni(ii), cu(ii) and zn(ii) salts of 2-(4-nitrophenylaminocarbonyl)benzoic acid were characterized by physical, analytical and spectroscopic studies and checked for their  in-vitro antimicrobial activity against three bacterial strains, mycobacterium smegmatis (gram +ve), escherichia coli (gram -ve), pseudomonas aeuroginosa (gram -ve) and three fungal strains, nigrospora oryzae, ...

Journal: :avicenna journal of phytomedicine 0
cheruthazhakkat sulaiman centre for medicinal plants research, arya vaidya sala kottakkal-676503, kerala, india sivadasan pillai geetha centre for medicinal plants research, arya vaidya sala kottakkal-676503, kerala, india balachandran indira centre for medicinal plants research, arya vaidya sala kottakkal-676503, kerala, india

objective: ipomoea mauritiana is used in both ayurveda and folk medicine systems. the tuberous roots are known to be diuretic, depurative, carminative, and anthelmintic. the objective of the current study was to identify phenolic antioxidants from i. mauritiana using spectrophotometric and lc-ms analysis. materials and methods: an activity-guided fractionation and purification process was used t...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2002
amonollah aminzadeh atousa aminzadeh kazem khosravy

diagnosis of infected and affected dentine is an important factor in clininal restorative treatment of dentine. in this study, the ir and raman spectra of the sound dentine, infected dentine and affected dentine are reported. the structure of infected dentine and affected dentine has been compared with the sound dentine and hydroxyapatite. it is shown while the infected dentine has lost its str...

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