Publications by authors named "Marcia de Carvalho"

Statement Of Problem: Computer-guided implant surgery facilitated by intraoral scanning may enhance the efficiency of the digital workflow. However, it is necessary to assess technique accuracy to evaluate the accuracy of implant placement.

Purpose: The purpose of this clinical study was to evaluate the accuracy of a virtual computer-aided design and computer-aided manufacturing (CAD-CAM) static guided surgery technique associated with intraoral scanning in partially edentulous participants by analyzing the overlap among preoperative and postoperative cone beam computed tomography (CBCT) scans, virtual planning, and the guided surgery performed.

View Article and Find Full Text PDF

A sequential design strategy was applied to optimize the secretion of pectinases by a strain, from Brazilian sugarcane liquor vat, on passion fruit residue flour (PFRF), through solid-state fermentation (SSF). A factorial design was performed to determine the influence variables and two rotational central composite designs were executed. The validated experimental result was of 7.

View Article and Find Full Text PDF

In the agricultural industry, advances in optical imaging technologies based on rapid and non-destructive approaches have contributed to increase food production for the growing population. The present study employed autofluorescence-spectral imaging and machine learning algorithms to develop distinct models for classification of soybean seeds differing in physiological quality after artificial aging. Autofluorescence signals from the 365/400 nm excitation-emission combination (that exhibited a perfect correlation with the total phenols in the embryo) were efficiently able to segregate treatments.

View Article and Find Full Text PDF

This study aimed to investigate the characteristics related to SARS-CoV-2 in Luanda, Angola. A total of 622 individuals were screened for SARS-CoV-2 from January to September 2020. Chi-square and logistic regression were used to identify the relationship between sociodemographic characteristics and SARS-CoV-2.

View Article and Find Full Text PDF

Objective: This study aimed to investigate the use of texture analysis for characterization of radicular cysts and periapical granulomas and to assess its efficacy to differentiate between both lesions with histological diagnosis.

Methods: Cone beam computed tomography (CBCT) images were obtained from 19 patients with 25 periapical lesions (14 radicular cysts and 11 periapical granulomas) confirmed by biopsy. Regions of interest were created in the lesions from which 11 texture parameters were calculated.

View Article and Find Full Text PDF

The scope of this article is to apply a trans-disciplinary socio-ecological approach to discuss the super-determination of health in rural areas of the southern Amazon region from a case study developed in Humaitá in the State of Amazonas in Brazil. Field data were collected using ethnographic techniques applied during three expeditions in Humaitá's rural area between 2012 and 2014. Based on the 'socio-ecological metabolism' analytical category, a descriptive and theoretical analysis of four crucial components in the process of super-determination of local health are presented: (1) the composition of the local rural population; (2) fixed and changing territorial aspects; (3) construction of socio-ecological identities; (4) ethnic conflict between Indians and non-Indians.

View Article and Find Full Text PDF

Objective: Acute kidney injury is a common complication in critically ill patients, and the RIFLE, AKIN and KDIGO criteria are used to classify these patients. The present study's aim was to compare these criteria as predictors of mortality in critically ill patients.

Methods: Prospective cohort study using medical records as the source of data.

View Article and Find Full Text PDF

Samples of sewage from a university hospital and a chemistry technical school were analysed for the percentage of bacterial tolerance to chromium (Cr), silver (Ag) and mercury (Hg). Additionally, we investigated the effect of these metals on pigmentation and on some enzymatic activities of the metal tolerant strains isolated, as well as antimicrobial resistance in some metal tolerant Enterobacteriaceae strains. Tolerance to Cr was observed mainly in Gram positive bacteria while in the case of Ag and Hg the tolerant bacteria were predominately Gram negative.

View Article and Find Full Text PDF

The innate immune system represents the first line of host defense against pathogens. Genetics factors regulating the immune responses play a role in the susceptibility to infectious diseases, such as tuberculosis (TB). We analyzed MBL2 promoter and exon 1 functional single nucleotide polymorphisms (SNPs) in a group of 155TB patients and 148 healthy controls in order to evaluate their influence on the onset of infection and TB development.

View Article and Find Full Text PDF

The prevalence of breastfeeding has increased over the past two decades in Brazil, as a result of public breastfeeding policies. The scope of this paper is to analyze the correlation between the increase in the prevalence of breastfeeding and hospitalization rates due to diarrhea. It is an epidemiological ecological study, based on secondary data from Brazilian Capital Cities and the Federal District.

View Article and Find Full Text PDF

Objective: Assess the impact of activities by the nongovernmental organization Refazer in support of medical care for children at social risk.

Methods: A longitudinal study was conducted of 77 patients from Rio de Janeiro in treatment at the Fernandes Figueira Institute and supported by Refazer. The assessment period was two years, one before and the other during the intervention period while being supported by the NGO.

View Article and Find Full Text PDF

Objectives: To determine the effects of low-dose transdermal hormone therapy (HT) on systolic (SBP) and diastolic (DBP) blood pressure (BP) evaluated by 24-h ambulatory blood pressure monitoring (ABPM) in hypertensive postmenopausal women.

Methods: The study was conducted on 24 hypertensive postmenopausal women aged, on average, 54 years and under treatment with enalapril maleate (10-20 mg/day) combined or not with hydrochlorothiazide (25 mg/day). Thirteen women used a transdermal adhesive containing estradiol and norethisterone (25 and 125 mug active substance/day, respectively) and 11 did not receive HT.

View Article and Find Full Text PDF