Publications by authors named "Rafael C da Silva"

In honey bees, appetitive motivation is primarily driven by the needs of the colony rather than individual needs. The regulation of appetitive behavior is achieved through the coordinated action of neuropeptides, hormones and biogenic amines, which integrate multiple signals to ensure appropriate appetitive responses. Dopamine signalling underpins a food-related wanting system that is sensitive to aversive experiences.

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Aims And Objectives: Evaluate the effect of IV line labels on nurses' identification of high-alert medications in a simulated scenario of multiple infusions for critically ill patients.

Design: Randomised crossover simulation experimental study.

Methods: A study was conducted on 29 nurses working in intensive care for over 6 months.

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The evidence on products for the prevention of radiodermatitis is limited. The primary objective was to analyse the effectiveness of the spray skin protectant 'non-burning barrier film' in the prevention of radiodermatitis with moist desquamation in patients with the anal canal and rectal cancer followed in nursing consultations compared to a standardised moisturiser based on Calendula officinalis and Aloe barbadensis. Single-blind randomised clinical trial.

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In myrmecophilous organisms, which live in symbiosis with ants, cuticular hydrocarbons (CHCs) play a pivotal role in interspecific communication and defense against chemical-oriented predators. Although these interactions form complex information webs, little is known about the influence of biotic environmental factors on the CHC profiles of myrmecophiles. Here, we analyzed the effect of different host plants and tending ants on the larval CHC profile of Synargis calyce (Lepidoptera: Riodinidae), a polyphagous species with facultative myrmecophily.

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Nitrogen (N) is an essential nutrient for plants, and the sources from which it is obtained can differently affect their entire development as well as stress responses. Distinct inorganic N sources (nitrate and ammonium) can lead to fluctuations in the nitric oxide (NO) levels and thus interfere with nitric oxide (NO)-mediated responses. These could lead to changes in reactive oxygen species (ROS) homeostasis, hormone synthesis and signaling, and post-translational modifications of key proteins.

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Aims And Objectives: To analyse the process of elaborating social representations about pressure injury preventive measures by the nursing team (nurses and nurse technicians) and how this process relates to preventive practices for hospitalized patients.

Design: Qualitative study, with the application of the theory of social representations in its procedural methodological approach.

Methods: The study was carried out in an inpatient clinic of a public hospital in the state of Rondônia, Brazil.

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Background: Labelling is a strategy that contributes to the correct and faster identification of drugs, minimizing misidentification. There is a gap in knowledge on optimal labelling standards for intravenous (IV) devices applied to the care of critically ill patients.

Aim: The goal of this article was to map existing knowledge on the labelling of IV drug delivery devices in critically ill patients for the prevention of medication errors.

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Chemical communication plays a major role in regulating social dynamics in social insect colonies. The most studied class of chemical compounds are the cuticular hydrocarbons (CHCs), compounds with high molecular weight that cover the insect body. CHCs are used in nestmate recognition and to signal reproductive status.

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An observational study was developed with 108 nursing professionals who managed vascular access devices in 4 intensive care units of a university hospital in Rio de Janeiro, Brazil. The objective was to analyze the practice of the nursing staff in performing flushing for the maintenance of vascular access devices in critically ill patients. Data were collected by observing the flushing procedure using a structured checklist and analyzed using descriptive and inferential statistics.

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Aim: to compare the effect of rapid cycle deliberate practice simulation training with skill-training simulation on peripheral intravenous catheter insertion for Licensed Practical Nurses.

Background: The use of peripheral intravenous catheters is associated with high rates of complications, although it is widely used in clinical practice. Training strategies to ensure good performance can minimize the risks inherent to this procedure.

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Oral squamous cell carcinoma (OSCC) is a worldwide public health problem, with high morbidity and mortality rates. The development of new drugs to treat OSCC is paramount. plant species have shown many biological activities.

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Cuticular hydrocarbons (CHCs) are often used in the chemical communication among social insects. CHCs can be used in nestmate recognition and as queen pheromones, the latter allows the regulation of the reproductive division of labor. In the common wasp Vespula vulgaris, CHCs and egg-marking hydrocarbons are caste-specific, being hydrocarbon queen pheromones and egg maternity signals.

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In contrast to extensive investigations on bee cognition, the cognitive capacities of wasps remain largely unexplored despite their key role as pollinators and predators of insect pests. Here we studied learning and memory in the neotropical wasp using a Pavlovian conditioning in which harnessed wasps respond with conditioned movements of their mouthparts to a learned odorant. We focused on the different castes, sexes, and ages coexisting within a nest and found that adults of .

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Granulomatosis with polyangiitis (GPA) is a systemic disease that has variable clinical expression. GPA is the most common antineutrophilic cytoplasmic antibody(ANCA)-associated vasculitis (AAV). Diffuse alveolar hemorrhage (DAH) is one of the least common pulmonary manifestations in patients with GPA.

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Background: Support surfaces variables, such as size, material, and density, can determine chest compression depth in cardiopulmonary resuscitation.

Objective: to analyze the force required to do a high-quality chest compression concerning different surfaces in CPR.

Method: This experimental study was developed using a Little Anne manikin and a mechanical device to perform chest compressions.

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Pelidnota luridipes Blanchard (1850) is a tropical beetle of the family Scarabaeidae, whose larvae live on wood without parental care. Microbiota of mid- and hindgut of larvae was evaluated by culture-dependent and independent methods, and the results show a diverse microbiota, with most species of bacteria and fungi shared between midgut and hindgut. We isolated 272 bacterial and 29 yeast isolates, identified in 57 and 7 species, respectively, while using metabarcoding, we accessed 1,481 and 267 OTUs of bacteria and fungi, respectively.

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Introduction: Cytomegalovirus (CMV) infection is common among patients with human immunodeficiency virus (HIV) infection. Gastrointestinal (GI) involvement with tumor like lesion is a rare presentation. Our patient presented with rectal pain and findings concerning for malignancy.

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Fibroepithelial stromal polyps (FEPs) are benign tumors of the integumentary system with mesodermal origin. They are commonly found over the skin. Rarely, they can be found in the nipple.

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Objective: to determine the prevalence of radiodermatitis, severity grades and predictive factors of its occurrence in patients with anal and rectal cancer followed up by the nursing consultation, and to analyze the association of severity grades of radiodermatitis with temporary radiotherapy interruption.

Method: a quantitative, cross-sectional and retrospective study, carried out with 112 medical records of patients with anal and rectal cancer undergoing curative radiotherapy followed up in the nursing consultation. Data were collected using a form and analyzed using analytical and inferential statistics.

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Wasps (Vespidae) are important organisms to understand the evolution of social behaviour. Wasps show different levels of sociality, which includes solitary to highly eusocial organisms. In social insect species, queens and workers differ in physiology and morphology.

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Hepatic portal venous gas (HPVG) is a condition where air embolization from disrupted intestinal mucosa reaches the portal system. It is an uncommon finding and denotes severity. This report describes HPVG as a rare and lethal complication of enteral nutrition.

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Background: Brain paracoccidioidomycosis (PCM) or neuroparacoccidioidomycosis (NPCM) is a fungal infection of the central nervous system (CNS) caused by , a dimorphic fungus. The CNS involvement is through bloodstream dissemination. The association between NPCM and systemic lupus erythematous (SLE) is rare.

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A contained ruptured mycotic abdominal aneurysm is one of the complications of infective endocarditis. It is a complication that physicians should entertain when patients with infective endocarditis present with a complaint of back pain. This case report aims to increase the awareness of the possibility of a rupture of a small size abdominal mycotic aneurysm.

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In social insects, it has been suggested that reproduction and the production of particular fertility-linked cuticular hydrocarbons (CHC) may be under shared juvenile hormone (JH) control, and this could have been key in predisposing such cues to later evolve into full-fledged queen pheromone signals. However, to date, only few studies have experimentally tested this "hormonal pleiotropy" hypothesis. Here, we formally test this hypothesis using data from four species of Polistine wasps, , , , and , and experimental treatments with JH using the JH analogue methoprene and the anti-JH precocene.

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