Publications by authors named "Rozenfeld S"

One of the main barriers to MEC applicability is the bacterial anode. Usually, the bacterial anode contains non-exoelectrogenic bacteria that act as a physical barrier by settling on the anode surface and displacing the exoelectrogenic microorganisms. Those non-exoelectrogens can also compete with exoelectrogenic microorganisms for nutrients and reduce hydrogen production.

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The bacterial anode in microbial fuel cells was modified by increasing the biofilm's adhesion to the anode material using kaolin and graphite nanoparticles. The MFCs were inoculated with , kaolin (12.5 g·L), and three different concentrations of graphite (0.

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This study demonstrates the adverse effects of water in exhaled breath samples on the accuracy of breath biomarker analysis when using gas chromatography. The presence of water in exhaled breath significantly modifies the retention times and peak areas of compounds, particularly for low-boiling, early eluting compounds. To tackle this issue, a two-step approach is introduced.

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Adverse drug events (ADEs) are harmful events caused by medication, and some of which can lead to death. Death records are an important source of information when using codes from the 10th revision of the International Classification of Diseases (ICD-10) suggestive of ADE. This study aimed to identify the ADEs registered in Brazililian Mortality Information System (SIM), analyzing data distribution by year, age group, and type of event.

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Background: A Pain Plan was formulated for all patients undergoing elective spine surgery at our institution. It was based on prior opioid experiences and developed collaboratively between the patient and the surgeon at a preoperative clinic visit. Category 1 patients had no previous opioid experience, Category 2 patients had remote previous opioid experience with acceptable pain control and no side effects, Category 3 patients had remote previous opioid experience with unacceptable pain control and/or side effects, and Category 4 patients had opioid use leading up to surgery.

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Microbial electrolysis cells (MECs) are an emerging technology capable of harvesting part of the potential chemical energy in organic compounds while producing hydrogen. One of the main obstacles in MECs is the bacterial anode, which usually contains mixed cultures. Non-exoelectrogens can act as a physical barrier by settling on the anode surface and displacing the exoelectrogenic microorganisms.

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Introduction: The Pain Plan was developed collaboratively and implemented a unique systematic approach to reduce opioid usage in elective spine surgery.

Methods: This was a retrospective cohort study comparing patients who underwent elective spine surgery before and after Pain Plan implementation. The Pain Plan was implemented on May 1, 2019.

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In traumatic brain injury (TBI), the initial injury phase is followed by a secondary phase that contributes to neurodegeneration, yet the mechanisms leading to neuropathology in vivo remain to be elucidated. To address this question, we developed a Drosophila head-specific model for TBI termed Drosophila Closed Head Injury (dCHI), where well-controlled, nonpenetrating strikes are delivered to the head of unanesthetized flies. This assay recapitulates many TBI phenotypes, including increased mortality, impaired motor control, fragmented sleep, and increased neuronal cell death.

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Aim: The objective of this case report was to present a rare case of simultaneous multiple internal root resorption (IRR) in four mandibular incisors and discuss the possible etiology and suitable armamentarium for its treatment based on different morphological considerations.

Background: IRR in permanent dentition is a rare pathological condition and its etiology is not yet fully understood. Very few cases of multiple IRR were reported.

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Dispersal affects the spatial distribution and population structure of species. Dispersal is often male-biased in mammals while female-biased in birds, with the notable exception of the Anatidae. In this study, we tested genetic evidence for sex-biased dispersal (SBD) in the Swan Goose , an Asian endemic and IUCN vulnerable species, which has been increasingly restricted to breeding on Mongolian steppe wetlands.

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Bioaugmentation is a bioremediation option based on increasing the natural in-situ microbial population that possesses the ability to degrade the contaminating pollutant. In this study, a diesel-degrading consortium was obtained from an oil-contaminated soil. The diesel-degrading consortium was grown on wood waste that was plasma-pretreated.

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This descriptive, ecological study of clonazepam consumption in Rio de Janeiro State (RJ) estimated use prevalence from 2009 to 2013 using data from the National Controlled Product Management System operated by Brazil's health surveillance agency, Anvisa. Consumption was measured by total population and by population over 18 years old, using the standardised Daily Defined Doses of 8 mg (anticonvulsant) and 1 mg (sedative-hypnotic). The municipalities of the Rio de Janeiro Metropolitan Region were grouped by Human Development Index (HDI) and GINI index, subjected to cluster analysis and ranked by clonazepam consumption.

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Studies of adverse drug events (ADEs) are important in order not to jeopardize the positive impact of pharmacotherapy. These events have substantial impact on the population morbidity profiles, and increasing health system operating costs. Administrative databases are an important source of information for public health purposes and for identifying ADEs.

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The most widely reported catalyst in microbial electrochemical cells (MEC) cathodes is platinum (Pt). The disadvantages of Pt include its high cost and sensitivity to various molecules. In this research an exfoliated molybdenum di-sulfide (MoS-EF) catalyst was synthesized.

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The degree of inhospitable terrain encountered by migrating birds can dramatically affect migration strategies and their evolution as well as influence the way we develop our contemporary flyway conservation responses to protect them. We used telemetry data from 44 tagged individuals of four large-bodied, Arctic breeding waterbird species (two geese, a swan and one crane species) to show for the first time that these birds fly non-stop over the Far East taiga forest, despite their differing ecologies and migration routes. This implies a lack of suitable taiga refuelling habitats for these long-distance migrants.

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Background: Adverse drug events (ADEs) are one of the most frequent causes of patient harm resulting from medical interventions, especially among inpatients. This study aimed to evaluate the incidence of ADEs and characterise them in terms of degree of harm, medication implicated and patient symptoms, at a Brazilian university hospital.

Methods: This is a retrospective study of chart review.

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The aim of this study was to estimate the prevalence of potential interactions between antihypertensives and other drugs. A household survey was conducted with individuals 60 years or older residing in Rio de Janeiro, Brazil. Potential moderately or very severe drug-drug interactions with antihypertensives, documented as suspected, probable or established, were identified.

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What Is Known And Objective: Studies in a number of countries have shown that adverse drug events (ADE) occur frequently among hospital inpatients. The objective of this study was to conduct a systematic review of observational studies of the frequency of ADE in adult inpatients and to examine factors associated with observed heterogeneity in the reported results.

Methods: The systematic review included observational studies, which identified and analysed ADE during hospitalization of adult inpatients.

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Objective: To estimate the frequency of and to characterize the adverse drug events at a terciary care hospital.

Methods: A retrospective review was carried out of 128 medical records from a hospital in Rio de Janeiro in 2007, representing 2,092 patients. The instrument used was a list of triggers, such as antidotes, abnormal laboratory analysis results and sudden suspension of treatment, among others.

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Objectives: This study aimed to characterize and estimate the frequency of adverse reactions to antituberculosis drugs in the population treated at the Centro de Saúde Escola Germano Sinval Faria, a primary health care clinic in Manguinhos, Rio de Janeiro City, and to explore the relationship between adverse drug reactions and some of the patients' demographic and health characteristics.

Methods: This descriptive study was conducted via patient record review of incident cases between 2004 and 2008.

Results: Of the 176 patients studied, 41.

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Adverse drug events (ADE) are important causes of impairment of the quality of care for inpatients and therefore should be identified and characterized. Thus, lists of triggers were developed, including the proposal by the Institute for Healthcare Improvement. We analyzed the application of these triggers in a university hospital, with the cooperation of pharmacy and medical students, field training, standardized forms and manuals.

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Concern over the harmful effects of drug use by the elderly has motivated studies aimed at identifying problems in such utilization. This was a household survey with retirees aged > 60 years living in Belo Horizonte, Minas Gerais State, Brazil, in 2003, who reported having a diagnosis of diabetes and/or hypertension. Quality of anti-hypertensive and anti-diabetic medication was measured by redundancy, combinations of drugs, and inappropriate drugs.

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