Wear Rate, Tribo-Corrosion, and Plastic Deformation Values of Co-Cr-Mo Alloy in Ringer Lactate Solution.

This study investigates the tribocorrosion performance of a cast Co-Cr-Mo alloy prepared using casting and electromagnetic stirring (EMS) at specific frequencies. The tribocorrosion behaviour of the alloy was evaluated when exposed to Ringer's lactate solution to optimize the EMS parameters and improve its properties. The research focuses on biomedical implant applications and explores how EMS affects alloy wear and corrosion resistance.

Scratch and Wear Behaviour of Co-Cr-Mo Alloy in Ringer's Lactate Solution.

Cobalt-chromium-molybdenum (Co-Cr-Mo) alloy is a material recommended for biomedical implants; however, to be suitable for this application, it should have good tribological properties, which are related to grain size. This paper investigates the tribological behaviour of a Co-Cr-Mo alloy produced using investment casting, together with electromagnetic stirring, to reduce its grain size. The samples were subjected to wear and scratch tests in simulated body fluid (Ringer's lactate solution).

Integrating work into the design: The case of offshore maintenance.

Background: Ergonomics in design is intended to close the gap between what is designed and the real work. This study discusses the creation of technical ergonomics requirements for the basic design stage of workshops on offshore platforms.

Objective: This paper intends to show how the ergonomics discipline contributes to integrating knowledge on the real work of the maintenance crew with the design.

The practice of ergonomics as a design discipline in the basic design of oil platforms.

Background: Ergonomics is increasingly gaining ground in projects in the energy sector, as well as in the continuous process industry, although the discipline is still framing its space in this milieu. This issue emerges from the designers' lack of familiarity with ergonomics work, especially in engineering design projects, combined with the usual expectations of organizations regarding the participation of ergonomists and the deliverables they ought to develop throughout the project.

Objective: This study aims to report the participation of a team of ergonomists in an oil platform basic design, discussing ergonomics structuring as an emerging design discipline.

Field and classroom initiatives for portable sequence-based monitoring of dengue virus in Brazil.

Brazil experienced a large dengue virus (DENV) epidemic in 2019, highlighting a continuous struggle with effective control and public health preparedness. Using Oxford Nanopore sequencing, we led field and classroom initiatives for the monitoring of DENV in Brazil, generating 227 novel genome sequences of DENV1-2 from 85 municipalities (2015-2019). This equated to an over 50% increase in the number of DENV genomes from Brazil available in public databases.

Parental Stress in Primary Caregivers of Children with Evidence of Congenital Zika Virus Infection in Northeastern Brazil.

Background: Despite the well-known role of parents as caregivers, few studies have addressed their health outcomes related to the Zika virus epidemic.

Methods: A cross-sectional study was carried out with 146 primary caregivers of children 15-26 months of age, with laboratory and/or clinical evidence of Zika infection between August and October 2017 in three Brazilian municipalities: João Pessoa and Campina Grande in the state of Paraíba and Fortaleza in the state of Ceará. Caregivers reported on their child's life and health, family circumstances and underwent screening for stress using the Parenting Stress Index-Short Form.

Association and birth prevalence of microcephaly attributable to Zika virus infection among infants in Paraíba, Brazil, in 2015-16: a case-control study.

Background: In 2015, the number of infants born with microcephaly increased in Paraíba, Brazil, after a suspected Zika virus outbreak. We did a retrospective case-control investigation to assess the association of microcephaly and Zika virus.

Methods: We enrolled cases reported to the national database for microcephaly and born between Aug 1, 2015, and Feb 1, 2016, on the basis of their birth head circumference and total body length.

Outbreak of Guillain-Barré syndrome possibly related to prior Zika virus infection, Metropolitan Region of Recife, Pernambuco, Brazil, 2015.

Objetivo: to investigate the occurrence of GBS in the Metropolitan Region of Recife, PE, Brazil, 2015.

Methods: this was a descriptive study using data from the Hospital Information System, National Pharmaceutical Services Management System and interviews; GBS cases were classified according to Brighton criteria and prior infection according to laboratory and clinical criteria.

Results: in 2015, the number of GBS hospitalizations had a threefold increase in comparison to 2014.

Physiological evaluation of the behavior and epidermis of freshwater planarians ( and sp.) exposed to stressors.

Planarians are metazoan freshwater flatworms which are free-living organisms. Their body has pluripotent stem cell promoters of tissue regeneration capacity. The water temperature and the potential of hydrogen (pH) of lentic ecosystems are important factors involved in the distribution and abundance of these animals.

Clinical-epidemiological description of live births with microcephaly in the state of Sergipe, Brazil, 2015.

Objective: to describe the clinical and epidemiological characteristics of microcephaly cases in live births in Sergipe, Brazil, and to calculate the prevalence in its municipalities.

Methods: this is a descriptive study on live births from September 1st to November 30th, 2015, with data from medical records and interviews with mothers.

Results: 83 cases of microcephaly were confirmed, with three deaths; prevalence in the 26 municipalities with confirmed cases ranged from 18 to 185/10,000 live births; the median of head circumference was 31 cm (range: 22.

Guillain-Barré syndrome and other neurological manifestations possibly related to Zika virus infection in municipalities from Bahia, Brazil, 2015.

Objective: to describe the reported cases of Guillain-Barré Syndrome (GBS) and other neurological manifestations with a history of dengue, chikungunya or Zika virus infections, in the Metropolitan Region of Salvador and in the municipality of Feira de Santana, Brazil.

Methods: this is a descriptive study with data of an investigation conducted by the epidemiological surveillance from March to August 2015; to confirm the neurological manifestations, medical diagnosis records were considered, and to prior infection, clinical and laboratory criteria were used.

Results: 138 individuals were investigated, 57 reported infectious process up to 31 days before neurological symptoms - 30 possibly due to Zika, 13 to dengue, 8 to chikungunya and 6 were inconclusive -; GBS was the most frequent neurological condition (n=46), with predominance of male sex (n=32) and the median age was 44.

Description of the first cases of Zika virus fever investigated in municipalities of the Brazilian Northeastern Region, 2015.

Objective: to confirm Zika virus circulation and discard other etiological agents in an outbreak occurred in the states of Rio Grande do Norte, Maranhão and Paraíba, in May, 2015.

Methods: this is a case series descriptive study with residents in Natal-RN, Barra do Corda-MA, São Luis-MA and João Pessoa-PB, with 20 cases in each state, presenting rash, absent or mild fever and one of the following signs/symptoms: conjunctival hyperemia, arthralgia or limb edema; RT-PCR/isolation tests for Zika, enterovirus and respiratory viruses, and serology tests (dengue, rubella and parvovirus B19) were performed.

Results: the main symptoms were rash (n=60), pruritus (n=54), and arthralgia (n=47); 51 individuals did not present fever; Zika virus was identified in 18 cases (12 in Paraíba, four in Maranhão and two in Rio Grande do Norte), and antibodies to dengue, in 14 cases.

Sharing experiences: towards an evidence based model of dengue surveillance and outbreak response in Latin America and Asia.

Background: The increasing frequency and intensity of dengue outbreaks in endemic and non-endemic countries requires a rational, evidence based response. To this end, we aimed to collate the experiences of a number of affected countries, identify strengths and limitations in dengue surveillance, outbreak preparedness, detection and response and contribute towards the development of a model contingency plan adaptable to country needs.

Methods: The study was undertaken in five Latin American (Brazil, Colombia, Dominican Republic, Mexico, Peru) and five in Asian countries (Indonesia, Malaysia, Maldives, Sri Lanka, Vietnam).