Carbon spheres were applied as templates to synthesize titanium dioxide hollow spheres. The purified with either ethanol or acetone, and the effects of this treatment on properties resulting titania investigated. photocatalytic activity catalysts was measured via decomposition phenol model pollutant under visible light irradiation. It found that solvent used for purification carbon had a surpri...

Heterogeneous template-induced nucleation is a promising way to regulate protein crystallization events and could be employed for purification processes crystallographic studies. Protein process with graphite graphene oxide, as heterogeneous templates, were investigated. More than 640 hanging drops different concentrations of Lysozyme (30, 50, 70, 100 mg/mL) NaCl (0.7, 0.9, 1.1, 1.3, 1.5 M) cry...

Glucansucrase (GS) belongs to the GH70 family, which not only can synthesize exopolysaccharides (EPSs) with different physicochemical properties through glucosyl transglycosylation (by hydrolyzing sucrose) but also produce oligosaccharides. Different strains GSs, catalyze synthesis of EPS glycosidic bond structures; these EPSs have biological functions. As an important enzymatic tool, GS has gr...

in this paper, design and construction of a tactile sensor for measuring contact-force is presented. mechanism of measuring contact-force in this tactile sensor is based on impedance changing of piezoelectric crystal and voltage of different points in circuit as a result of applying force on the crystal. by considering a specific point in the circuit and recording the changes of its voltage, ma...

background: similar to the thermoluminescence (tl) spectra, the optical parameters variations can also be used in tl crystals for dosimetry purposes. these optical parameters can include absorption, transmission and reflection coefficients. materials and methods: single crystals of kbr and kcl which have been used in this research were grown from laboratory grade extra pure precursor powders. c...

TiCl4, ammonia, inorganic salts as raw material, nanometer composite-crystal TiO2 powders were synthesized by two-step chemical method. Precursors were crystallized with different phase and stable composite-crystal TiO2 with anatase and rutile phase was prepared at low temperature. Quantitative control of crystal phase was realized. Remarkable factors includ...