background and objective: reduced fat cheese often exhibits poor sensory quality due to the reduction of fat, which plays a critical role in flavor and texture. therefore, there is the challenge to produce a reduced fat cheese with improved sensory attributes and texture that is also comparable to its full-fat counterpart. the main objective of this research was to investigate the effect of dif...

b ackground : tuberculosis is a crucial health problem. establishing a rapid, reliable and still inexpensive diagnostic method for tuberculosis seems to be substantial in developing countries where tb has very high incidence rate . methods:   an indirect  enzyme-linked  immunosorbent  assay (elisa )   was established to detect serum antibodies against mycobacterium  tuberculosis. three kinds of...

BACKGROUND Chromium (VI) has toxic and carcinogenic effects. So, determination and speciation of chromium in environmental samples is very important in view of health hazards. In this study, solid phase extraction (SPE) based on bulky amine-functionalized bimodal mesoporous silica nanoparticles (NH2-UVM-7) as a novel nanoadsorbent was applied for preconcentration and speciation of chromium (III...

In this study a new method for Pb determination in water using solid phase extraction coupled to a flow injection system and flame atomic absorption spectrometry was developed. The sorbent used for Pb preconcentration and extraction was silica gel chemically modified with niobium(V) oxide. Flow and chemical variables of the system were optimized through a multivariate procedure. The factors sel...

1-(2-pyridylazo) 2-naphtol (PAN) impregnated Ambersorb 563 resin was used as solid phase extractor of copper, nickel, cadmium, lead, chromium and cobalt ions in aqueous solutions prior to their atomic absorption spectrometric determinations. The parameters including pH, sample volume, matrix effects were also investigated. The relative standard deviation (R.S.D.) of the combined method of sampl...

A new method for Ag determination in water samples using solid phase extraction (SPE) coupled to a flow injection system and flame atomic absorption spectrometry was developed. The sorbent used for Ag preconcentration and extraction was the termite digestion product. Flow and chemical variables of the system were optimized through a multivariate procedure. The factors selected were adsorbent ma...

The synthesis and characterization of solid complexes for pantoprazole sodium sesquihydrate (PNZ) with Cd(II), Hg(II) and Zn(II) metals in molar ratios M:L = 1:2 was studied. The complexes are stable in the solid state and are soluble only in DMF and DMSO. The metal complexes were characterized by elemental analysis, molar conductivity measurements, magnetic susceptibility, UV spectrophotometry...

Abstract This paper analyzes thermo-optical reactions of the PCM-based glass element which has capability to store thermal energy together with a variable transparency level through storage process corresponding phase change. Optical properties are determined by transition at given boundary conditions over time. Special uncommon changes occur during its internal processes, from liquid solid and...

objective(s):the present study reports the development and validation of a sensitive and rapid extraction method beside high performance liquid chromatographic method for the determination of crocetin in human serum. materials and methods:the hplc method was carried out by using a c18 reversed-phase column and a mobile phase composed of methanol/water/acetic acid (85:14.5:0.5 v/v/v) at the flow...

carbon disulfide is used predominantly in the manufacture. it has affects the nervous system. in this study, the applicability of spme as a passive sampler for determination of carbon disulphide in air was studied. effect of sampler and environmental parameters on uptake of carbon disulphide was studied as well. four fibers were tested to select the best sampler for determine carbon disulfide i...