[PDF] Top 20 Investigación en comunicación: vigencia y prospectiva

... butyl calix(6)arene, hexaacetato calix(6)arene and hexabenzoyl derivatives were prepared in various diluents such as xylene and cyclohexane, etc by diluting it to the known volume with the ... See full document

... The study was implemented for several variation in concentration of solute as well as variation in ...The viscometric and thermodynamic parameters enthalpy, entropy and Gibbs’ free energy were also ... See full document

... [4] T.Kaliyappan, S.Rajagopan,P.Kannan, J. Appl. Polym. Sci., 2004 , 91(1), 494. [5] T. S.Pitchumony, M.Palaniandava, Inorganica Chimica Acta, 2002, 337, 420. [6] M.Shaikha, M. Shafiqb, M. Farooquic, J. Adv. Sci. ... See full document

... systematic study of Sodium Chloride solution has been done by us at different concentration at 2 MHz frequency and 297 K ...our study reveals that ultrasonic velocity, density, viscosity and other ... See full document

... Figure 6 Examples of SEM images of dried samples. The representative photographs were selected for each tested sample. In contrast to the samples (a, b), the samples (c, d) contain a major part of the nanopowder ... See full document

... of viscometric measurements of crumb slurry in water using a promylograph was confirmed as a sufficiently rapid method for the evaluation of bakery product ... See full document

... In this work we investigated the optimization conditions for removal of Cr(III) ions by MnO 2 /MWCNT nanocomposite that we reach to a fairly good results. We investigated the adsorption in a wide range of pH to identify ... See full document

... The gum exudates of Azadirachta indica A. Juss. Meliaceae was collected locally and identified taxonomically and authenticated by the Botanical Survey of India (BSI), Coimbatore, Tamil Nadu, India. Laboratory grade ... See full document

... The decreasing heat value of the blend as the biodiesel proportion of the blend increases can be accounted for by the presence of oxygen atoms contained in the[r] ... See full document

... this study was to obtain structural relationship with the electron energy using the QSAR And electron energy levels for the four other nanotubes were predicted on the basis of this ... See full document

... Thermodynamic Study and Mathematical Modeling of Adsorption of Cobalt(ll) ions on Biopolymers based of Sugarcane Bagasse.. S.ELANZA 1 , H.TAOUIL 2, 3 , A.[r] ... See full document

... present in different minerals, vitamins, enzymes and proteins. Copper sulphate is very important transition metal salt in agriculture, public health, decorative trades, mining, paint, petroleum and textile industries. On ... See full document

... One of the resin say, Carboxymethyl Phenol-formaldehyde resin having versatile applications. Its carboxymethyl derivatives designated as carboxymethyl Phenol formaldehyde resin (CMPF) has been reported for application ... See full document

... their study to describe the isotherms. Another study showed that MWCNTs had potential applications for trihalomethane removal from drinking water, and both Langmuir and Freundlich models fitted the ... See full document

... Acetyl derivative of Calixarene is a neutral extractant, capable of extracting uncharged metal complexes in aqueous solution under particular conditions and also charged metal ions and complexes. At the lower pH Hf(IV) ... See full document

... To identify the effect of temperature, 0.005 g of MnO 2 /MWCNT nanocomposite was added to 10 ml of Cr(III) solution with concentration of 10 mg/L at PH 5 and the experiments were carried out at temperatures of 35, 45, 55 ... See full document

... When a pure solid or liquid dissolves in a solvent, the entropy of the substance increases (carbonates are an exception - they interact with water and actually bring MORE order to the [r] ... See full document

... Analysis and processing of available information on the magnitude of the enthalpy of formation of Al-Ce IM systems allowed to derive the expressing equations of the dependence of the thermodynamic characteristics ... See full document

... of calix[4]arene С­97 as a separate ligand into the ligand binding site of myosin subfragment­1 suggests that residues asp 320 , asn 321 , leu 676 and gln 678 may be involved in fixa­ tion of calix[4]­arene ... See full document

... To have an economical dyeing process, the dyebath should be well exhausted and the final concentration of dye on fiber at equilibrium must be at very high percentage of exhaustion. Adsorption isotherms provide useful ... See full document