Abstract Gerodermia osteodysplastica hereditaria was diagnosed in three Mexican brothers 6, 7, and 8 years old, respectively, who had the distinct facial appearance with sagging cheeks, premature wrinkling of skin face, abdomen, dorsum hands feet; malocelusion, span greater than height; hyperextensibility; winging scapulae; stooped posture kyphoscoliosis; protuberant abdomen; pes planus. Radiologically they generalized osteoporosis, platyspondily due to multiple compression fractures,...

Currently, azo dye Carmoisine is an additive that widely used in the food processing industry sector. However, limited biodegradability environment has become a major concern regarding removal of dye. In this study, degradation (acid red 14) aqueous solution was studied by using sequenced process electro-oxidation-plasma at atmospheric pressure (EO-PAP). Both efficiency and effectiveness were compared individually. To ascertain behavior over process, variations its physical characteristics...

Abstract Optical emission spectroscopy was used to study the glow discharge of CO 2 in pressure range 0.2 1.2 mTorr, power 160 W and a flux 35 psi. The bands lines were measured using monochromator wavelength 200 900 nm. species observed C (A 3 Π g – X '3 u ) at 435.7nm (C' 1 b 369.2 nm; O (b Σ + ‐ 628.2; (a' Π) 674.7 339.3 289.2 353.2 ( B 391.7 Σ) 577.7 A 327.2 We that intensities have an almost constant behavior as function 0.6 followed by increasing behavior. electron temperature ion...

The variations in the physical and chemical parameters involved degradation of dye Acid Black 52 (AB52) using plasma were analyzed. plasma, or electrical discharge, was generated gas-liquid interface at atmospheric pressure a dc power supply. system configuration comprised two tungsten electrodes: cathode is immersed solution while anode fixed above surface with gap 5 mm, where generated. absorbance, total organic carbon, oxygen demand, pH variation, conductivity, optical emission spectrum,...

A DC glow discharge produced in N2 gas can generate several species that are important different applications, such as the modification of surface properties materials. low-pressure apparatus was used for analysis Ar–N2 mixture at a total pressure 2.0 Torr, power 20 W and 40 l/min flow rate gases. The emission bands were measured wavelength range 200–1100 nm. principal elements N2, N 2+ Ar I. electron temperature found 1.72–2.08 eV, ion density order 1010 cm−3.

Optical emission spectroscopy was used to study a gas mixture glow discharge of CO2 and N2 at total pressure 1.2 Torr, power 100 W flow 16.5 L/min. The bands were measured in the wavelength range 200 nm 900 nm. principal species observed O2+ (A2Πu → X2Πg), CO+ (A2Π X2Σ), N2+ (B2Σu+ X2Σg+), CO2+ X2Π), N2(C3Πu B3Πg), O2(b1Σg+ X3Σg−), CO (a'3Σ a3Π). behavior band intensities as function percentage is consistent with recent Monte Carlo simulations. electron temperature ion density determined by...

Electric discharge between two electrically charged surfaces occurs at a well-defined, gas-dependent combination of atmospheric pressure and the distance those surfaces, as described by Paschen's law. The understanding when will occur in an Ar is essential basic knowledge. A glow apparatus was used this experiment range 2.0 Torr 12 Torr, power 20 W 40 l/min flow rate gases. optical emission spectroscopy carried out wavelength 200 to 1100 nm. Here, we present experimentally measured plasma...

This study analyses the glow discharge of He and N2 mixture at pressure 2.0 Torr, power 10 W, flow rate 16.5 l/min, by using optical emission spectroscopy mass spectrometry. The bands were measured in wavelength range 200–1100 nm. principal species observed N2+ (B2Σ+u→X2Σ+g), (C3Πu→B3Πg), He, which are good agreement with results Besides, electron temperature ion density determined a double Langmuir probe. Results indicate that is 1.55–2.93 eV, concentration order 1010 cm−3. experimental for...

The decolorization of the Basic violet I (BVI) dye when interacted with a corona discharge is studied in present work, taking account two systems, batch and flux. current voltage were measured during whole process which plasma was generated, an applied power 51.9 167.72 W where transport gas air. A reactor flow used, 500 5000 mL samples treated, respectively. Optical emission spectra (OES) oxidizing species ·OH at wavelengths 307.597 310.148 nm, associated A2∑+ – X2Π transition. absorption...

DC generated Ar–CO2 discharge for plasma mixtures at 2.0 Torr is investigated to evaluate the variation in electron temperature and density, energy distribution function, population densities of reactive atomic, molecular, ionic species CO2–Ar plasmas as a function Ar percentage mixtures. Optical emission spectroscopy quadrupole mass spectrometry are used determine mode percentage. The observed were CO2, O2, CO, O, C2, Ar, which agree very well with observation. In addition, single Langmuir...

Abstract In the search to mitigate ecological footprint originated by construction industry, elaboration of green concrete is an alternative. However, it necessary study material and determine if requires a treatment prior its incorporation into mixture. Natural fibers Typha Dominguensis were extracted analyzed in winter summer seasons. A process de-lignification with H2O2 was carried out observe transformations morphological, chemical structural properties. It found that physicochemical...

Optical emission spectroscopy was applied for plasma characterization during erosion of substrates asphaltene. The amount 100 mg asphaltene carefully to an electrode and exposed air glow discharge at a pressure 1.0 Torr. generated in stainless steel chamber by AC generator with frequency 60 Hz output power about W. electron temperature found be 6.88 eV, the ion density is 3.5 × 1016 cm−3. As plasma, surface etched. from molecular bands CS2, O3, N2+, NO, O2, CS, S2, CN, C7H7, C2, H2, C2−,...

This work characterizes the degradation of textile dye azo Acid Black 52 by measuring several physical and chemical parameters. A corona plasma was created at atmospheric pressure applied on liquid-air interface water samples containing dye. 1.0 mM ferrous sulfate (FeSO4) added to solution, for a total volume 250 mL. For each treatment, number parameters were quantified. These voltage, current, temperature, loss volume, pH, electrical conductivity, concentration, optical mission spectra,...

Ethanol plasma produced in low pressure with constant flux has been characterized situ by optical emission spectroscopy (OES) and a Langmuir probe. From these methods, hydrogen carbon monoxide are the main products from ethanol decomposition plasma. In addition, C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , OH, CH, O <sup xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> H xmlns:xlink="http://www.w3.org/1999/xlink">α</sub> species...

The solubility of a crystalline layered silicate, δ-Na2Si2O5, has been evaluated and compared with that alpha phase (α-Na2Si2O5) an amorphous silicate the same composition. Experiments were carried out at 293, 313, 333 K. It was found on raising temperature from 293 to K, large increase in occurred for all silicates studied, whereas increasing time 30 180 min had less marked effect. Interactions between deionized tap water are discussed. determined taking into account alkaline earth metal...