Publications by authors named "Alan Costa"

Soil organic carbon is critical to reducing anthropogenic CO emissions, highlighting the importance of carbon sequestration on agricultural lands. No-till agricultural practices have been shown to be effective in improving soil quality and sequestering carbon, thereby supporting global efforts to mitigate climate change. Based on the edaphoclimatic conditions of the region, five reference areas were selected, with different characteristics in terms of conditions (A1, A2, A3, A4, and A5) in 5 different farms in the municipality of Rio Verde, GO, Brazil.

View Article and Find Full Text PDF

L. is a potential source of raw material for biodiesel fuel due to the high oil content in its grains. In Brazil, this species is cultivated in the low rainfall off-season, which limits the productivity of the crop.

View Article and Find Full Text PDF

Introduction: In today's world, digital technologies have become pervasive, impacting every aspect of our lives. Even in subjects such as Health and Physical Education (HPE), which traditionally emphasizes experiential, active, and corporeal learning, there is a growing interest in the role and influence of new technologies. These technologies not only have the potential to transform human movement and health cultures, but they also offer valuable tools to facilitate teachers' work and enhance student learning.

View Article and Find Full Text PDF

Background: Laparoscopic cholecystectomy (LC) is the current standard of treatment for surgical gallbladder removal as it has an overall improved post-operative recovery compared to Open Cholecystectomy (OC). This has resulted in the loss of exposure to surgical trainees and the associated technical skills and decision-making required to convert to OC. The aim of this study is to provide construct validity to the proposition that cadaveric simulation can be used successfully to teach and learn open cholecystectomy.

View Article and Find Full Text PDF

Chagas disease is a Neglected Tropical Disease with limited and ineffective therapy. In a search for new anti-trypanosomal compounds, we investigated the potential of the metabolites from the bacteria living in the corals and sediments of the southeastern Brazilian coast. Three corals, , , and sediments yielded 11 bacterial strains that were fully identified by MALDI-ToF/MS or gene sequencing, resulting in six genera-, , , , and To conduct this study, EtOAc extracts were prepared and tested against The crude extracts showed IC values ranging from 15 to 51 μg/mL against the trypomastigotes.

View Article and Find Full Text PDF

(1) Background: To evaluate the epidemiological profile of people who use drugs at the PrEP outpatient clinic of the University Hospital of Brasília; (2) Methods: Cross-sectional study with a review of data from medical records referring to the first medical consultation. The prevalence ratio was calculated using a Poisson regression model with robust variance; (3) Results: A total of 53% of subjects reported drug use in the last 3 months. The unadjusted prevalence ratio of drug use in trans women was PR: 9.

View Article and Find Full Text PDF

Several protocols have been used with computer-aided design and computer-aided manufacture (CAD-CAM) prostheses after image-guided implant surgery based on a prosthetically driven surgical plan. For delayed approaches, a CAD-CAM custom healing abutment can be manufactured before the surgery and installed immediately after implant placement. However, information on the use of emergence profile segmentation on which to base the digital design and on the use of low-cost 3-dimensional printers to produce custom healing abutments are lacking.

View Article and Find Full Text PDF

Water deficit (WD) combined with high temperature (HT) is the major factor limiting agriculture worldwide, and it is predicted to become worse according to the current climate change scenario. It is thus important to understand how current cultivated crops respond to these stress conditions. Here we investigated how four soybean cultivars respond to WD and HT isolated or in combination at metabolic, physiological, and anatomical levels.

View Article and Find Full Text PDF

Background: Early identification of bleeding at the scene of an injury is important for triage and timely treatment of injured patients and transport to an appropriate facility. The aim of the study is to compare the performance of different bleeding scores.

Methods: We examined data from the Swiss Trauma Registry for the years 2015-2019.

View Article and Find Full Text PDF

The emergence and spread of multidrug-resistant (MDR) enterococci and other Gram-positive bacteria represents a severe problem due to the lack of effective therapeutic alternatives. Natural products have long been an important source of new antibacterial scaffolds and can play a key role in the current antibiotic crisis. Enterococci are predominantly non-pathogenic gastrointestinal commensal bacteria, but among them, Enterococcus faecalis and Enterococcus faecium represent the species that account for most clinically relevant infections.

View Article and Find Full Text PDF
Article Synopsis
  • Soybean is facing productivity challenges due to increased drought conditions, prompting research into using arbuscular mycorrhizal fungi (AMF) as a way to help combat drought stress.
  • In a study, two soybean cultivars (Anta82 and Desafio) were tested under drought stress with and without AMF inoculation to assess their physiological and morphological responses.
  • The findings showed that AMF helped improve growth and physiological traits in both soybean cultivars under drought conditions, making their performance comparable to well-watered plants.
View Article and Find Full Text PDF

Background: Soybean is the main oilseed crop grown in the world; however, drought stress affects its growth and physiology, reducing its yield. The objective of this study was to characterize the physiological, metabolic, and genetic aspects that determine differential resistance to water deficit in soybean genotypes.

Methods: Three soybean genotypes were used in this study, two lineages (L11644 and L13241), and one cultivar (EMBRAPA 48-C48).

View Article and Find Full Text PDF

The cause of appendicitis is unknown. A review is presented across diverse sources relating to the biology of the appendix and its perturbations. A mechanistic model of the function of the appendix is presented, and its application to the syndromes and consequences of appendicitis is described.

View Article and Find Full Text PDF

Biodiversity in the Brazilian Cerrado biome has been declining sharply with the continued expansion of agriculture and the excessive use of herbicides. Thus, the aim of this study was to evaluate the morphophysiological and biochemical responses in plants to various doses of the herbicide 2,4-D. Specific biomarkers that characterize the phytoindicator potential of this species were determined.

View Article and Find Full Text PDF

Background: Significant improvements in breast cancer survival have been made in the past few decades in many developed countries including Australia with a five-year relative survival of 90%. The aim of the present study is to obtain a brief estimate of the relative importance of demographic factors such as rurality, socio-economic standard and ethnicity versus traditional risk factors for women diagnosed with breast cancer in Far North Queensland, Australia.

Methods: This was a retrospective longitudinal study of all women diagnosed with their first episode of breast cancer in 1999-2013 in Far North Queensland, Australia.

View Article and Find Full Text PDF

Background: Appendicitis is a leading cause of surgical hospital admission. To date, there have been no published epidemiological studies describing appendicitis in tropical and remote Australia and none specifically documenting appendicitis in Indigenous Australians. This descriptive study used available state data to investigate appendicitis across Far North Queensland (FNQ).

View Article and Find Full Text PDF

Marginal bone loss around immediately placed implants may compromise esthetic outcomes in the anterior maxilla. The relatively recent socket-shield technique of partial extraction therapy has been described as being useful to maintain the structure of peri-implant tissues. The present technique report introduced a digital workflow to perform image-guided implant placement after partial extraction therapy.

View Article and Find Full Text PDF

Staphylococcus aureus is the one of the most successful modern pathogens. The same bacterium that lives as a skin and mucosal commensal can be transmitted in health-care and community-settings and causes severe infections. Thus, there is a great challenge for a discovery of novel anti-Staphylococcus aureus compounds, which should act against resistant strains.

View Article and Find Full Text PDF

Background: The Anatomy of Surgical Exposure (ASE) is a cadaver-based operative surgery simulation course that aims to teach techniques and exposures commonly used in open surgical operations. In this study, we used a validated tool to determine efficacy of assessing skills acquisition in the simulated environment. Our aims were to investigate if the ASE course improves the candidates' surgical performance, and to assess if the validated Objective Structured Assessment of Technical Skill (OSATS) template could be a useful tool for assessing technical skills.

View Article and Find Full Text PDF

Introduction: Surgical informed consent (SIC) to procedures is necessary to ensure patient autonomy is adequately respected. It is also necessary to protect doctors, and their institutions, from claims of negligence. While SIC is often acquired by senior consultants, it also commonly falls to the junior doctors on a team to ensure SIC is adequately acquired and documented.

View Article and Find Full Text PDF

Background: Sepsis commonly causes intensive care unit (ICU) mortality, yet early identification of adults with sepsis at risk of dying in the ICU remains a challenge.

Objective: The aim of the study was to derive a mortality prediction model (MPM) to assist ICU clinicians and researchers as a clinical decision support tool for adults with sepsis within 4 h of ICU admission.

Methods: A cohort study was performed using 500 consecutive admissions between 2014 and 2018 to an Australian tertiary ICU, who were aged ≥18 years and had sepsis.

View Article and Find Full Text PDF

Little is known about the role of light intensity in modulating plant responses to stress due to water deficit (WD). Thus, the objective of this study was to determine the WD and contrasting irradiance effects on the physiology, anatomy, and grain yield of soybean plants. The experimental design was a randomized block in a growth chamber and a 2 × 2 factorial treatment arrangement: 90% (well-watered, WW) and 40% (WD) of soil field capacities (FC); and 750 (medium irradiance, MI) and 1500 (higher irradiance, HI) μmol (photons) m  s irradiance.

View Article and Find Full Text PDF

Fungicides are widely used to control diseases in soybean crops. We hypothesized that fungicides applied to healthy soybean plants compromise the plant's physiology, affect the reproductive process and reduce crop productivity. We aimed to evaluate the photosynthetic process, pollen grain viability and yield components of soybean plants exposed to three commercial fungicides.

View Article and Find Full Text PDF