Adsorption, aggregation and sedimentation of titanium …
Here, the adsorption, aggregation and sedimentation of TiO 2 nanoparticles (TiO 2 NPs) and nanotubes (TiO 2 NTs) were investigated in the presence of Elliott Soil humic acid …
Evaluation of the local kinetics of a colloidal system …
This work presents a numerical solution to determine the concentration profiles of a colloidal system formed by titanium dioxide (TiO 2 ) particles in water as a function of the time and the …
[PDF] COMBINED BIOLOGICAL-PHOTOCATALYTIC …
To shorten the biological treating time and to examine the effect of electrolytes in a model water on the photocatalytic treatment, the combined biological-photocatalytic treatment was evaluated for removal of a mixture (total: 100 mg L -1, each: 25 mg L -1 ) of 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,5-trichlorophenol (2,4,5-TCP), and pentachlorophenol (PCP) in …
Photocatalytic degradation of phenol by visible light …
Photocatalytic degradation of phenol by visible light-responsive iron-doped TiO2 and spontaneous sedimentation of the TiO2 particles. @article{Nahar2006PhotocatalyticDO, title={Photocatalytic degradation of phenol by visible light-responsive iron-doped TiO2 and spontaneous sedimentation of the TiO2 particles.}, author={Mst.
Photocatalytic degradation of phenol by visible light …
Dive into the research topics of 'Photocatalytic degradation of phenol by visible light-responsive iron-doped TiO 2 and spontaneous sedimentation of the TiO 2 particles'. Together they form a unique fingerprint. Sort by ... Titanium dioxide 25%. Calcination 24%. X ray photoelectron spectroscopy 23%. Molar ratio 23%. Electrons 19%. Crystals 19% ...
Increasing the Efficiency of Spontaneous Sedimentation for …
The aim of this study was to evaluate the association between a longer sedimentation time, the reading of a larger number of slides, and the collection of multiple samples on the efficiency of the spontaneous sedimentation technique. Twenty-two patients with a previous parasitological exam positive for intestinal protozoa were recruited to collect new fecal …
(PDF) Dispersion and stability of titanium dioxide nanoparticles …
The increasing applications of titanium dioxide (TiO(2)) nanoparticles raise concerns about their potential environmental impacts. To investigate the fate and transport of TiO(2) nanoparticles in ...
Parasitological stool sample exam by spontaneous …
Introduction: Spontaneous sedimentation is an important procedure for stool examination. A modification of this technique using conical tubes was performed and evaluated.
COMBINED BIOLOGICAL-PHOTOCATALYTIC TREATMENT …
Abstract. Read online. To shorten the biological treating time and to examine the effect of electrolytes in a model water on the photocatalytic treatment, the combined biological-photocatalytic treatment was evaluated for removal of a mixture (total: 100 mg L-1, each: 25 mg L-1) of 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,5-trichlorophenol (2,4,5-TCP), …
Effects of material properties on sedimentation and …
This study investigated the sedimentation and aggregation kinetics of titanium dioxide (TiO(2)) nanoparticles with varying material properties (i.e., crystallinity, morphology, …
Comparison of the performance of two spontaneous sedimentation …
This is the first study on repeatability and accuracy (using a Bayesian approach) of two spontaneous sedimentation techniques. These results suggest underdiagnosis of little dense parasitic forms due to technical limitations in both tests. We conclude that the combined study of repeatability, concordance and accuracy is a key strategy for ...
Published 28 March 2019 Journal of Parasitology
spontaneous sedimentation technique. In the spontaneous sedimentation technique (Lutz, 1919) modified, the samples were left for sedimentation in 200 ml glass cups for 24 hr in the refrigerator, in order to prevent the degradation of protozoa parasites. Three microscope slides were prepared from each sample. In the centrifuge-flotation technique,
[Spontaneous sedimentation in tube technique (SSTT) for …
Spontaneous sedimentation showed a higher yield (50.9%) in comparison with the direct exam (23.2%) or the fl otation technique with zinc sulphatel (25.9%) and it was more effi cient in the detection of cysts of protozoa and eggs of intestinal helminths. Conclusions. The technique of spontaneous sedimentation in tube is confi rmed to be a high ...
[Spontaneous sedimentation in tube technique (SSTT) for …
Objective: The objective of this study was to evaluate the diagnostic efficacy of the Spontaneous Sedimentation in Tube Technique (SSTT) described by Tello, in comparison with the direct smear and other concentration techniques, when it is used to determine the prevalence of intestinal parasites in field and laboratory studies in rural areas of the Andean Region.
Sedimentation and Reuse of Titanium Dioxide: Application to …
Titanium dioxide (TiO 2) sedimentation, enhanced through charge neutralization and coagulation/flocculation with metal salts and polymers, was investigated to evaluate the …
Highly effective and inexpensive parasitological technique …
Millions of low-income people in the world are affected by intestinal parasites. Inexpensive, simple, and effective techniques for diagnosis are necessary. The spontaneous sedimentation technique in tube (SSTT), for application in poor healthcare settings and under field-work conditions, was described 25 years ago in Peru by Tello. The advantages of the SSTT are its …
Spontaneous nucleation on flat surface by depletion …
Sedimentation forms polycrystalline colloidal crystal on a at surface, and above the threshold polymer concentration, ratio of the spontaneous nucleation increases, resulting in a decrease in the
Highly effective and inexpensive parasitological technique …
The spontaneous sedimentation technique in tube (SSTT), for application in poor healthcare settings and under field-work conditions, was described 25 years ago in Peru by Tello. The advantages of the SSTT are its ability to detect the majority of intestinal parasites, including eggs, larvae, cysts, and trophozoites, and its low cost.
Posterior Titanium Screw Fixation without Debridement of …
Posterior titanium fixation in the treatment of spontaneous PSD of the thoracolumbar spine 471 art and management algorithm. Eur Spine J 2013;22: 2787-99. Roberto T, Daniele M, Martina C, Tiziano de G, Roberto D. Treatment of thoracolumbar spinal infections through anterolateral approaches using expandable titanium mesh cage for spine ...
Andrea BRUNELLI
Agglomeration and sedimentation of titanium dioxide nanoparticles (n-TiO 2) in synthetic and real waters. A Brunelli, G Pojana, S Callegaro, A Marcomini ... Residual beta-cell function and spontaneous clinical remission in type 1 diabetes mellitus: the role of puberty. R Bonfanti, E Bognetti, F Meschi, A Brunelli, MC Riva, MR Pastore ...
TiO2 sedimentation, spontaneous and in the Jar …
Download scientific diagram | TiO2 sedimentation, spontaneous and in the Jar Test, at pH adjusted to 7.0 and without the addition of aluminum sulfate.
Parasitological stool sample exam by spontaneous …
Introduction: Spontaneous sedimentation is an important procedure for stool examination. A modification of this technique using conical tubes was performed and evaluated. Methods: Fifty fecal samples were processed in sedimentation glass and in polypropylene conical tubes. Another 50 samples were used for quantitative evaluation of protozoan cysts.
COMBINED BIOLOGICAL-PHOTOCATALYTIC TREATMENT …
combined biological-photocatalytic treatment for the mineralization of a mixture of chlorophenols in an electrolyte-containing model water and spontaneous sedimentation of titanium dioxide | suryaman | indonesian journal of chemistry 21662 40748 1 pb
Posterior Titanium Screw Fixation without Debridement of …
Study Design: Retrospective study. Purpose: The aim of our study was to analyze the safety and effectiveness of posterior pedicle screw fixation for treatment of pyo-genic spondylodiscitis (PSD) without formal debridement of the infected tissue.
Posterior Titanium Screw Fixation without Debridement of …
Posterior screw fixation with titanium instrumentation was safe and effective in terms of stability and restoration of neurological impairment. Fixation also rapidly reduced back pain. Posterior Titanium Screw Fixation without Debridement of Infected Tissue for the Treatment of Thoracolumbar Spontaneous Pyogenic Spondylodiscitis
Comparison on aggregation and sedimentation of titanium …
Aggregation and sedimentation are of significant importance to the safe applications of nanomaterials. In this study, aggregation and sedimentation of three homologous nanomaterials, titanium dioxide (TiO 2), titanate nanotubes (TNs), and titanate nanotubes–TiO 2 (TNs–TiO 2) were systematically studied under various aqueous conditions.The influences of …
Increasing the Efficiency of Spontaneous Sedimentation for …
The aim of this study was to evaluate the association between a longer sedimentation time, the reading of a larger number of slides, and the collection of multiple samples on the efficiency of the spontaneous sedimentation technique. Twenty-two patients …
Adsorption, aggregation and sedimentation of titanium …
Environmental behavior, bioavailability and risks posed by TiO 2, nanomaterials (TiO 2 NMs) in surface waters are affected by morphologies of the particles and geochemistry, including pH, inorganic and organic matter. Here, the adsorption, aggregation and sedimentation of TiO 2 nanoparticles (TiO 2 NPs) and nanotubes (TiO 2 NTs) were investigated in the …
TiO2 nanoparticle dispersions in water and nonaqueous …
Hansen Solubility Parameters (HSP) have been shown to be an effective approach for rationalizing and predicting the stability of titanium dioxide nanoparticles (TiO 2 NPs) …
Comparison of the performance of two spontaneous sedimentation
The spontaneous sedimentation technique (SST) (also known as the Lutz technique or the Hoffman, Pons and Janer technique) is a traditional test widely used for clinical diagnosis and epidemiological surveys in Brazil and, also, Venezuela (Brandelli et al., 2011; Carvalho et al., 2012; de Souza et al., 2007; Devera et al., 2008a,b; Pinheiro et ...