It was found that the DTCS can achieve a maximum adsorption capac

It was found that the DTCS can achieve a maximum adsorption capacity at pH value of 5.0. In such solution, the adsorption kinetics showed two stages, which involved in different molecular mechanisms. The first was a fast stage. It lasted for about 60 min. In the stage, over 80% of maximum adsorption occurred and a Cr(VI)-DTC ester formed. The ester was stable in the first hour, and then the Cr(VI) reduction took place in the second stage. The reduction of Cr(VI)

was coupled with the oxidation of DTC, producing elemental sulfur and sulfonate. The formed Cr(III) still fixed in the oxidized DTCS without lost of adsorption capacity. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“We studied the influence of deep levels in GaN buffer and AlGaN Selleck YAP-TEAD Inhibitor 1 barrier layer on capacitance-voltage characteristics of the AlGaN/GaN structure. Deep level states were assumed to be both donor and acceptor type and were modeled with discrete peak distribution in energy with certain

energy distance from the conduction-band minimum for acceptor-type states or valence-band maximum for donor states. For all the cases studied, the presence of the deep levels in the structure influenced selleck chemicals mainly the capacitance plateau of the curves and caused the appearance of the capacitance valley. In addition, the deep levels in AlGaN shifted the capacitance curves to more negative voltages, and the deep levels in GaN changed the slope of capacitance decrease after two-dimensional electron-gas depletion. (C) 2011 American Institute of Physics. [doi:10.1063/1.3643000]“
“Purpose: Infections are one of the most commonly found conditions in oral and maxillofacial surgery practice. They always represent a risk to patients regardless of whether they are of odontogenic origin or not, and if not treated at an early stage they may rapidly evolve and spread to adjacent anatomical structures, leading to Selleckchem S3I-201 serious complications and, occasionally, to death. For this reason, the objective of this study was to retrospectively analyze data from patients with infections

attended by the Department of Oral and Maxillofacial Surgery of the Piracicaba Dental School at the State University of Campinas-Unicamp.

Patients and Methods: in accordance with date and inclusion criteria, sampling comprised 210 patient reports from January 1999 to March 2007. Patients’ demographic data reviewed were gender, age, signs and symptoms, facial spaces affected, and therapy adopted.

Results: The mean age of patients was 30 years old (SD = 16.6), and the main origin of infections was odontogenic (79.31%); principal signs and symptoms were trismus (43.33%), fever (28.10%), and dysphagia (25.24%). The main facial spaces affected were the buccal mandibular space (50.00%), submandibular space (31.90%), and buccal maxillary space (19.05%). Surgical drainage was carried out in 46.67% of cases, and 10.

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