Showing papers by "University of Tabriz published in 2006"
TL;DR: The findings in this study shows that an increase in the current density up to 60-80 A m(-2) enhanced the color removal efficiency, the electrolysis time was 5 min and the range of pH was determined between 5.5 and 8.5 for two mentioned dye solutions.
564 citations
TL;DR: In this article, a quantum chemical study of the corrosion inhibition efficiency of the Schiff bases on Al in molar HCl was carried out and the results showed that the inhibition efficiency increases with decreasing in temperature and increasing in concentration of Schiff base.
207 citations
TL;DR: An artificial neural networks (ANN) model was developed to predict the performance of decolorization efficiency by EC process based on experimental data obtained in a laboratory batch reactor and a comparison between the predicted results of the designed ANN model and experimental data was conducted.
160 citations
TL;DR: In this article, the effect of polyethylene glycols structure on the inhibition efficiency of carbon steel corrosion at 25°C in 0.5N hydrochloric acid as corroding solution was evaluated by weight loss method and polarization and electrochemical impedance spectroscopy (EIS) techniques.
153 citations
TL;DR: A 2‐stage suspension cell culture of Taxus baccata L. uses modified B5 medium in order to improve cell growth as well as productivity and two different concentrations of several elicitors were added to the biomass growth medium with the aim of improving cellular productivity.
151 citations
TL;DR: In this article, the applicability of Prigogine-Flory-Patterson (PFP) theory for binary mixtures of 1-n-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) or 1 -n- butyl- 3methyloride tetrafluoroborate ([BF4]) in methanol and acetonitrile as function of composition under atmospheric pressure at T = (298.15 to 318.15)
138 citations
TL;DR: In this paper, internal microstrain of an iron-resin composite produced by powder metallurgy has been calculated using the Williamson-Hall method, and the results show that there are regular and similar changes of coercivity and hysteresis loss.
117 citations
TL;DR: In this article, the effects of NaCl salinity and N on the growth, ion concentrations and photosynthesis (Pn) in three olive (Olea europaea L.) cultivars (Mission, Manzanillo and Zard) were investigated.
113 citations
TL;DR: In this article, the effect of simple shearing versus mixing at similar levels of work input, on the microstructure and uniaxial extensional properties of two doughs prepared from flours of different strengths was investigated.
110 citations
TL;DR: In this article, the voltage-metric behavior of isoniazid (INZ) at an overoxidized polypyrrole (OPPy) modified glassy carbon electrode was investigated.
104 citations
TL;DR: In this paper, the inhibitory action of self-assembled films derived from two ligands Schiff bases, including N,N′-ethylen-bis (salicylidenimine) and N, N′-ortho-phenylen-, bis-bis, on copper surface has been studied by electrochemical techniques in chloride and acidic solutions.
TL;DR: In this paper, the authors focused mainly on the prediction of regional evapotranspiration (ET) of 7 months of active crop growth season (April�October) and two main objectives were: (i) prediction of mean monthly and annually ET0 in Iran using the suitable method from three selected candidates, which are Hargreaves adjusted in 1985, adjusted Thornthwaite and Linacre methods, and (ii) study of spatial variation of annual ET0.
TL;DR: Development of an electrochemical DNA biosensor based on a human interleukine-2 (IL-2) gene probe, using a pencil graphite electrode (PGE) as transducer and methylene blue (MB) as electroactive label is described.
Journal Article•
TL;DR: In the authors' opinion, this preliminary result warrant further studies in order to show the efficacy of MB-PDT in control of OLP for a longer period of time.
Abstract: Oral lichen planus (OLP) is a common chronic disease of uncertain origin. Many patients with OLP are refractory to all available therapies. The photodynamic therapy (PDT) was used as a possible alternative method in the treatment of lichen planus. Two patients with five oral lichen planus lesions were treated using topical PDT mediated by methylene blue (MB-PDT). The patients were followed up on sessions 3, 7, 15 days and 1 to 9 months after PDT. Clinical improvement was achieved in four lesions. Two lesions showed complete remission, and another two lesions had about 50% clinically improvement 3-9 months after a single session of PDT. No response detected in one lesion. MB-PDT blue seems to be an effective alternative treatment for control of OLP. In our opinion, this preliminary result warrant further studies in order to show the efficacy of MB-PDT in control of OLP for a longer period of time.
TL;DR: UV alone cannot be an efficient method for decolorization of AR27 in comparison with UV/H(2)O( 2) process, therefore the first term of the model can be neglected.
TL;DR: In this paper, doped lead-borate glasses were prepared from the melts in appropriate proportions of PbO2, H3BO3 and (15-40 mol%) CdO mixture in the temperature range 700-950°C.
Abstract: Cadmium doped lead-borate glasses were prepared from the melts in appropriate proportions of PbO2, H3BO3 and (15–40 mol%) CdO mixture in the temperature range 700–950°C. The infrared spectra of the glasses in the range 400–4000 cm-1 show their structures. No boroxol ring formation was observed in the structure of these glasses. Furthermore, doped cadmium atoms were not seen in tetrahedral coordination. But the conversion of three-fold to four-fold coordination of boron atoms in the structure of glasses was observed.
TL;DR: In this paper, the effect of plasticizers on thermal properties of resins was investigated by dynamic oscillatory tests at −100 to 150 degrees C. No crystallization and melting peaks related to zein and plasticizers were observed.
TL;DR: A new class of second derivative multistep methods is presented that takes advantage of calling for the solution of algebraic equations with the same coefficient matrix in each step using IOM to solve the resulting linear systems.
TL;DR: In this article, a three-component reaction of aldimines using aldehydes and anilines with ketones under solvent-free conditions is described, and the reaction proceeds rapidly and affords the corresponding β-amino ketones in good to high yields with good to excellent stereoselectivities.
TL;DR: The techniques of the supply voltage sag compensation in a distribution feeder are presented and a new concept of restoration technique is suggested to inject minimum energy for a given apparent power of DVR.
TL;DR: In this article, the density and speed of sound measurements have been made on the systems containing the ionic liquid 1-n-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) and some organic solvents having a wide range of dielectric constants.
TL;DR: In this article, a mathematical model which describes the static and dynamic operations of a pilot plant furnace was developed to predict the steady-state profiles of temperature, pressure and products yield.
01 Jan 2006-Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering
TL;DR: In this paper, the decolorization of the solution containing a common textile and leather dye, C.I. Acid Red 14 (AR14), at pH 3 by hydrogen peroxide photolysis, Fenton-like and photo-Fenton processes was studied.
Abstract: The decolorization of the solution containing a common textile and leather dye, C.I. Acid Red 14 (AR14), at pH 3 by hydrogen peroxide photolysis, Fenton, Fenton-like and photo-Fenton processes was studied. The dark and light reactions were carried out in stirred batch photoreactor equipped with an UV-C lamp (30 W) as UV light source. The experiments showed that the dye was resistant to the UV illumination, but was oxidized when one of Fe(II), Fe(III) and H2O2 compounds was present. It was also found that UV light irradiation can accelerate significantly the rate of AR14 decolorization in the presence of Fe(III)/H2O2 or Fe(II)/H2O2, comparing to that in the dark. The effect of different system variables like initial concentration of the azo dye, effect of UV light irradiation, initial concentration of Fe(II) or Fe(III) and added oxalate ion has been investigated. The results showed that the decolorization efficiency of AR14 at the reaction time of 2 min follows the decreasing order: UV/H2O2/Fe(III)/oxalate...
05 Dec 2006-Journal of Environmental Science and Health Part B-pesticides Food Contaminants and Agricultural Wastes
TL;DR: In this article, the degradation rate of erioglaucine was not so high when the photolysis was carried out in the absence of TiO2 and it was negligible in the presence of UV light.
Abstract: The present work mainly deals with photocatalytic degradation of a herbicide, erioglaucine, in water in the presence of TiO2 nanoparticles (Degussa P-25) under ultraviolet (UV) light illumination (30 W). The degradation rate of erioglaucine was not so high when the photolysis was carried out in the absence of TiO2 and it was negligible in the absence of UV light. We have studied the influence of the basic photocatalytic parameters such as pH of the solution, amount of TiO2, irradiation time and initial concentration of erioglaucine on the photodegradation efficiency of erioglaucine. A kinetic model is applied for the photocatalytic oxidation by the UV/TiO2 system. Experimental results indicated that the photocatalytic degradation process could be explained in terms of the Langmuir–Hinshelwood kinetic model. The values of the adsorption equilibrium constant, K, and the second order kinetic rate constant, k, were 0.116 ppm− 1 and 0.984 ppm min− 1, respectively. In this work, we also compared the reactivity ...
TL;DR: Root mycorrhizal colonization was positively correlated with RWC, LWP, shoot N and K, and seed weight, implying improvement of plant water and nutritional status as a result of colonization, suggesting that drought avoidance is main mechanism of this plant-microbe association in alleviation of water stress in soybean.
Abstract: Mycorrhizal symbiosis can potentially improve water uptake by plants. In a controlled pot culture experiment, soybean plants were inoculated with two species of arbuscular mycorrhizal fungi, Glomus mosseae (Gm) or Glomus etunicatum (Ge), or left non-inoculated (NM) as control in a sterile soil. Four levels of soil moisture (Field capacity, 0.85 FC, 0.7 FC, 0.6 FC) in the presence or absence of the Bradyrhizobium japonicum, were applied to the pots. Relative water content (RWC) of leaf at both plant growth stages (flowering and seed maturation) decreased with the dryness of soil; RWC was higher in all mycorrhizal than non-mycorrhizal plants irrespective of soil moisture level. At the lowest moisture level (0.6 FC) Ge was more efficient than Gm in maintaining high leaf RWC. Leaf water potential (LWP) had the same trend as RWC in flowering stage but it was not significantly influenced by decrease in soil moisture to 0.7 FC during seed maturation stage. Seed and shoot dry weights were affected negatively by drought stress. Mycorrhizal plants, however had significantly higher seed and shoot dry weights than non-mycorrhizal plants at all moisture levels except for seed weight at 0.6 FC. Root mycorrhizal colonization was positively correlated with RWC, LWP, shoot N and K, and seed weight, implying improvement of plant water and nutritional status as a result of colonization. Regardless of moisture treatments, bacterial inoculation caused a significant enhancement in N content and the highest N occurred in rhizobial inoculated plants at 0.85 FC and 0.7 FC. Shoot K was enhanced considerably by both bacterial and fungal inoculations, particularly in plants with dual inoculations where the highest shoot K levels were found. The relatively higher shoot and seed dry weights in plants inoculated with both G. etunicatum and B. japonicum could be ascribed to their higher RWC and LWP, suggesting that drought avoidance is main mechanism of this plant-microbe association in alleviation of water stress in soybean.
TL;DR: In this paper, the effect of ammonium:nitrate (NH4:NO3) ratio in nutrient solution on growth, photosynthesis (Pn), yield, and fruit quality attributes in hydroponically grown strawberry (Fragaria × ananassa Duch) cvs.
Abstract: The effect of ammonium:nitrate (NH4:NO3) ratio in nutrient solution on growth, photosynthesis (Pn), yield, and fruit quality attributes in hydroponically grown strawberry (Fragaria × ananassa Duch) cvs. ‘Camarosa’ and ‘Selva’ was evaluated. There were four nutrient solutions of differing NH4:NO3 ratios as follows: 0:100, 25:75, 50:50, and 75:25. Plants grown in solution with 75% NH4 had lower leaf fresh and dry weights and leaf area than those with 25% NH4 in both cultivars. High ratios of NH4 and NO3 in the solution always reduced the yield. The yield was increased by 38% and 84% in ‘Camarosa’ and ‘Selva,’ respectively, when the plants were grown in the 25NH4:75NO3 solution compared with plants grown in a higher NH4 ratio solution. The increased yield at the 25 NH4:75NO3 ratio was the result of the increase in fruit size, i.e., length and fresh weight of fruits. Plants grown in the 25NH4:75NO3 solution had the highest rate of Pn, while those grown in 75NH4:25NO3 solution had the lowest Pn rates ...
TL;DR: The distribution of genetic polymorphisms suggests the existence of distinct endemic regions of L. major in Iran and shows the potential of the PCR-SSCP method for assessing genetic heterogeneity within L.major.
TL;DR: A combination of FEM and other methods (such as state-space, which can compensate the above-mentioned drawbacks) can be used as a precise, flexible and widely applicable technique for fault diagnosis of faulty induction motors.
Abstract: Statistics show that 80% of faults are due to eccentricity in induction motors, promoting many research efforts still devoted to the eccentricity in these motors. This paper classifies different common faults in the stator and rotor. It then presents analysis techniques for faulty induction motors. Four more applied methods in the diagnosis and detection of faults in induction motors are investigated and critiqued. The finite difference method is introduced, and its drawbacks are noted. An equivalent magnetic circuit method is then discussed as a fast but less accurate method. The reduced accuracy of the latter method is due to neglect of the spatial harmonics, the relationship between these harmonics, and time harmonics, and particularly non-linearity of the magnetic materials. An analytical method of winding functions is investigated for the analysis of faulty induction motors. This method also neglects the spatial harmonics and their relationship with time harmonics, which could considerably influence ...
TL;DR: Benyi et al. as discussed by the authors showed that any function with ( [ d / 2 ] + 1 ) -times bounded derivatives is a Fourier multiplier for all modulation spaces M p, q ( R d ) with p ∈ ( 1, ∞ ) and q ∈ [ 1, ∞ ].
TL;DR: In this article, the effects of the incoherent pumping field and spontaneously generated coherence (SGC) on the phase control of group velocity were studied and the effect of a relative phase between probe and coupling fields on the absorption and the dispersion were discussed.
Abstract: This paper studies the effects of the incoherent pumping field and the spontaneously generated coherence (SGC) on the phase control of group velocity. The effects of a relative phase between probe and coupling fields on the absorption and the dispersion are then discussed. It is shown that the phase dependence of the group velocity not only depends on the existence of the SGC, but also depends on the existence of the incoherent pump field. We show that for the weak probe field, and in the presence of SGC, the existence of the incoherent pump field is a necessary condition for the phase control of the dispersion, the absorption and the group index.