THE CO-PRECIPITATION OF VANADIC ACID WITH AMMONIUM PHOSPHOMOLYBDATE.1

The precipitation and protection of vanadic acid by serum-proteins.

A comparative study on the dispersion of CuO-ZnO-Al2O3 nanoparticles over HZSM-5 via batch co-precipitation, semibatch co- precipitation and combined co-precipitation-ultrasound methods

A series of CuO-ZnO-Al2O3 nanoparticles over HZSM-5 were successfully prepared using different methods of batch co-precipitation, semibatch co-precipitation and combined co-precipitation-ultrasound. Nitrates of copper, zinc and aluminum were used as precursors, while Na-ZSM-5 was employed as composite support and sodium carbonate was used as precipitant agent. The effects of preparation methods...

Precipitation of lutein and co-precipitation of lutein and poly-lactic acid with the supercritical anti-solvent process

The supercritical anti-solvent (SAS) process has been used to re-crystallize lutein from ethyl acetate solutions. The influence of several process arameters (pressure, temperature, initial concentration, CO2 and solution flowrates) on the particle size and morphology have been studied. The esults have been compared to these obtained with other carotenoids ( -carotene and lycopene) with similar ...

determinant of the hankel matrix with binomial entries

abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.

study of dna interaction with ethylenediaminetetraacetic acid and sesamol food additives

برهمکنش dnaتیموس گاوی طبیعی (ct-dna) با اتیلن دی آمین تترااستات (edta)در بافرtris-hcl با 8/7 ph ( دراین ph،edta به نمک دی سدیم تبدیل می شود) وسسامول در بافر tris-hcl با4/7 ph مورد بررسی قرار گرفته است. edta و سسامول استفاده فراوانی در تکنولوژی غذایی و صنعت شیمیایی دارند. مدل اتصال dna مربوط بهedta بوسیله اسپکتروفتومتری جذب، دورنگ نمایی حلقوی(cd)، ویسکومتری وژل الکتروفورز بررسی شده است. طیفuv ...