نتایج جستجو برای: zinc ii oxide

تعداد نتایج: 798527  

Journal: :avicenna journal of medical biotechnology 0

background: antibiotic resistant bacteria can be considered as a main problem in infection management. zinc oxide nanoparticles (zno nps), individually or in combination with antibiotics, can be considered as good candidates for struggling against drug resistant bacteria. methods: in this study, zinc oxide nanoparticles were synthesized using sol-gel method in low temperature as a cost effectiv...

Journal: :تولید گیاهان زراعی 0
فریده بهبودی فارغ التحصیل کارشناسی ارشد گروه زراعت، دانشگاه تهران ایرج اله دادی دانشیار گروه زراعت، دانشگاه تهران ابراهیم محمدی گل تپه استاد گروه بیماری شناسی گیاهی، دانشگاه تربیت مدرس، تهران

in order to study the effect of vermicompost containing copper oxide and zinc oxide nanoparticles on was beans, in an experiment factorial were done based on a randomized complete block design in three replications. the experiment treatment were as follows: nanoparticles in 4 levels (0, 0.4, 0.8 and 1.2 g/kg weight of substrate), vermicompost in 3 levels (2.5, 5 and 7.5 g/kg-1 weight of substra...

Journal: :Acta Crystallographica Section E Structure Reports Online 2007

Journal: :journal of medical bacteriology 0
amirhossein mirhashemi dental research center, dentistry research institute , department of orthodontics, tehran university of medical sciences, tehran, ir iran. abbas bahador department of microbiology, school of medicine, tehran university of medical sciences, tehran, ir iran. mohammadzaman kassaee department of chemistry, tarbiat modarres university, tehran, ir iran. ghazaleh daryakenari department of esthetic and restorative dentistry, dental school, babol university of medical sciences, babol, ir iran. mohammadsadegh ahmad-akhoundi dental research center, dentistry research institute , department of orthodontics, tehran university of medical sciences, tehran, ir iran. ahmad sodagar dental research center, dentistry research institute , department of orthodontics, tehran university of medical sciences, tehran, ir iran.

background : incidence of  white  spots due  to  demineralization of  enamel  and  gingival problems  is  an  unacceptable  result  of  orthodontic  treatment.  plaque  accumulation  and bacterial biofilm growth are responsible for these phenomena. the resin-based dental composites used as bonding agents in orthodontics play a major role in mentioned problems. as recent researches assert the an...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2002

2009
I. Milošev T. Kosec

The formation of protective layers on copper, zinc and copper-zinc (Cu-10Zn and Cu-40Zn) alloys at open circuit potential in aerated, near neutral 0.5 M NaCl solution containing benzotriazole (BTA) was studied using potentiodynamic measurements, electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS). The addition of benzotriazole affects the dissolution of the m...

Journal: :علوم و تکنولوژی پلیمر 0
غلامرضا بخشنده قاسم نادری علی ابوالفتحی مهدی باریکانی علی پروین محمدحسین آسترکی

elastomer compound based on nr/br was prepared using different kinds of nano-zno and zno. the effect of zinc oxide as an activator of sulfur cure on the mechanical and morphological properties of the compound was studied. the result of the mechanical properties showed that the tensile strength, elongation-at-break, resilience, and abrasion resistance of the compound prepared by zno (4 phr) are ...

Journal: :international journal of nanoscience and nanotechnology 2010
m. movahedi , a. r. mahjoub i. yavari e. kowsari

in this paper, synthesis of the flower-like zinc oxide was performed using microwave assisted dicationic ionic liquid [mmp(im)2 ]br2 . the polycrystalline flower-like zinc oxide nanostructure was obtained when a suitable mole ratio (ionic liquid /zinc acetate) and short duration microwave was used. x-ray diffraction (xrd), scanning electron microscopy (sem), and photoluminescence (pl) spectra w...

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

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