Search results for: C. Ferreira

Items from 1 to 20 out of 1,139 results

article

Quantifying and mapping species threat abatement opportunities to support national target setting

Louise Mair, Eduardo Amorim, Monira Bicalho, Thomas M. Brooks, more

Conservation Biology > 37 > 1 > n/a - n/a

The successful implementation of the Convention on Biological Diversity's post‐2020 Global Biodiversity Framework will rely on effective translation of targets from global to national level and increased engagement across diverse sectors of society. Species conservation targets require policy support measures that can be applied to a diversity of taxonomic groups, that link action targets to outcome...

article

Tiny steps towards greater knowledge: An osteological review with novel data on the Atlantic Forest toadlets of the Brachycephalus ephippium species group

Manuella Folly, Cyro de Luna‐Dias, Ingrid R. Miguel, Julio C. Ferreira, more

Acta Zoologica > 104 > 1 > 71 - 105

Brachycephalus is a small, endemic genus of anurans that occur throughout the Brazilian Atlantic Forest. Recent analyses corroborated the monophyly of two species groups within this genus (B. ephippium and B. pernix), whereas the B. didactylus group appears to be polyphyletic. Herein, we compare and describe the skeletal system of all species from the Brachycephalus ephippium species group. We investigated...

article

Squaraine Dyes Derived from Indolenine and Benzo[e]indole as Potential Fluorescent Probes for HSA Detection and Antifungal Agents

Vanessa S. D. Gomes, João C. C. Ferreira, Renato E. F. Boto, Paulo Almeida, more

Photochemistry and Photobiology > 98 > 6 > 1402 - 1417

Four squaraine dyes derived from 2,3,3‐trimethylindolenine and 1,1,2‐trimethyl‐1H‐benzo[e]indole with different combinations of barbituric groups attach to the central ring, having ester groups and alkyl chains in the nitrogen atoms of heterocyclic rings were synthesized. These dyes were fully characterized, and their photophysical behavior was studied in ethanol and phosphate‐buffered solution. Absorption...

article

Air‐assisted spraying and electrically charged droplets for Bemisia tabaci control in soybeans

Gabriela Pelegrini, Antônio M Souza, Pedro HU Ferreira, Gabriel G Monteiro, more

Pest Management Science > 78 > 11 > 4618 - 4627

BACKGROUND The improvement of surface coverage and plant protection products deposition can be obtained by electrifying droplets, which are strongly attracted by plants, including the abaxial part of the leaves. Moreover, air assistance improves droplet penetration into the crop canopy, especially in the lower third of the plants. These technologies can help control soybean (Glycine max) whitefly,...

article

Advancing engineering education: Using the three‐phase methodology to teach IoT

Raphael M. Assumpção, Pedro R. Chaves, Luiz C. Ferreira, Paulo Cardieri, more

Computer Applications in Engineering Education > 30 > 5 > 1547 - 1560

The multidisciplinary aspect of Internet of Things (IoT) requires teaching approaches that can support this characteristic. Research has shown that inductive teaching methods can contribute to deeper learning. The development of the three‐phase methodology (TpM), an approach that guides the many disciplines involved in the creation of IoT solutions, precipitated the development of strategies for its...

article

An automated treatment planning strategy for highly noncoplanar radiotherapy arc trajectories

P. Carrasqueira, H. Rocha, J. M. Dias, T. Ventura, more

International Transactions in Operational Research > 30 > 1 > 206 - 223

Radiation therapy is a technology‐driven cancer treatment modality that has experienced significant advances over the last decades, due to multidisciplinary contributions that include engineering and computing. Recent technological developments allow the use of noncoplanar volumetric modulated arc therapy (VMAT), one of the most recent photon treatment techniques, in clinical practice. In this work,...

article

An automated bi‐level optimization approach for IMRT

P. Carrasqueira, M. J. Alves, J. M. Dias, H. Rocha, more

International Transactions in Operational Research > 30 > 1 > 224 - 238

Intensity‐modulated radiation therapy is used worldwide to treat cancer patients. The objective of this treatment is to deliver a prescribed radiation dose to the tumor while sparing, as much as possible, all the healthy tissues, especially organs at risk (OAR). This means that the planning of a radiotherapy treatment should take into consideration conflicting objectives: to be able to spare as much...

article

The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study

COVIDSurg Collaborative, Michel Adamina, Adesoji Ademuyiwa, Adewale Adisa, more

Colorectal Disease > 24 > 6 > 708 - 726

Aim The SARS‐CoV‐2 pandemic has provided a unique opportunity to explore the impact of surgical delays on cancer resectability. This study aimed to compare resectability for colorectal cancer patients undergoing delayed versus non‐delayed surgery. Methods This was an international prospective cohort study of consecutive colorectal cancer patients with a decision for curative surgery (January–April...

article

Modeling Communicable Diseases, Human Mobility, and Epidemics: A Review

David Soriano‐Paños, Wesley Cota, Silvio C. Ferreira, Gourab Ghoshal, more

Annalen der Physik > 534 > 6 > n/a - n/a

The spatiotemporal propagation patterns of recent infectious diseases, originated as localized epidemic outbreaks and eventually becoming global pandemics, are highly influenced by human mobility. Case exportation from endemic areas to the rest of the countries has become unavoidable because of the striking growth of the global mobility network, helping to overcome the physical distance existing between...

article

Vertical integration in healthcare: What does literature say about improvements on quality, access, efficiency, and costs containment?

Guilherme C. Amado, Diogo C. Ferreira, Alexandre M. Nunes

The International Journal of Health Planning and Management > 37 > 3 > 1252 - 1298

Introduction Vertical integration models involve integrating services from different levels of care (e.g., primary care, acute care, post‐acute care). Therefore, one of their main objectives is to increase continuity of care, potentially improving outcomes like efficiency, quality, and access or even enabling cost containment. Objectives This study conducts a literature review and aims at contributing...

article

Influence of offshore oil and gas structures on seascape ecological connectivity

Dianne L. McLean, Luciana C. Ferreira, Jessica A. Benthuysen, Karen J. Miller, more

Global Change Biology > 28 > 11 > 3515 - 3536

Offshore platforms, subsea pipelines, wells and related fixed structures supporting the oil and gas (O&G) industry are prevalent in oceans across the globe, with many approaching the end of their operational life and requiring decommissioning. Although structures can possess high ecological diversity and productivity, information on how they interact with broader ecological processes remains unclear...

article

Effectiveness of a new rutin Cu(II) complex in the prevention of lipid peroxidation and hepatotoxicity in hypercholesterolemic rats

Daniel A. F. Oliveira, Susana N. Diniz, Regina M. S. Pereira, Ivair D. Gonçalves, more

Journal of Food Biochemistry > 46 > 3 > n/a - n/a

A new rutin copper(II) complex (R‐Cu2) was prepared and characterized by spectroscopic methods and elemental analysis. The effects of rutin and R‐Cu2 were evaluated on the prevention of hypercholesterolemia in animals feed with high‐cholesterol diet (HCD) for 8 weeks. The animals (n = 5) were neither fed with HCD nor treated (control group), or were treated with vehicle, 10 mg/kg simvastatin, rutin...

article

A TpM‐based collaborative system to teach IoT

Luiz Carlos B. C. Ferreira, Renan Yamaguti, Omar Carvalho Branquinho, Paulo Cardieri

Computer Applications in Engineering Education > 30 > 1 > 292 - 303

The Internet of Things (IoT) is a multidisciplinary field involving different areas of knowledge. The development of IoT solutions depends on the integration and collaborative work between professionals from all of these areas. This has led to the development of methodologies to teach IoT, such as the three‐phase methodology (TpM). This study presents a collaborative system that operationalizes the...

article

Gene–gene interactions in the protein kinase C/endothelial nitric oxide synthase axis impact the hypotensive effects of propofol

Gustavo H. Oliveira‐Paula, Daniela A. Pereira, Lucas C. Pinheiro, Graziele C. Ferreira, more

Basic & Clinical Pharmacology & Toxicology > 130 > 2 > 277 - 287

Anaesthesia with propofol is frequently associated with hypotension, which is at least partially attributable to increased nitric oxide (NO) formation derived from the activation of protein kinase C (PKC)/endothelial NO synthase (NOS3) axis. In this cross‐sectional study, we tested whether PRKCA (which encodes PKCα) polymorphisms, or haplotypes, and interactions among PRKCA and NOS3 polymorphisms...

article

Disentangling climatic and nest predator impact on reproductive output reveals adverse high‐temperature effects regardless of helper number in an arid‐region cooperative bird

Pietro B. D’Amelio, André C. Ferreira, Rita Fortuna, Matthieu Paquet, more

Ecology Letters > 25 > 1 > 151 - 162

Climate exerts a major influence on reproductive processes, and an understanding of the mechanisms involved and which factors might mitigate adverse weather is fundamental under the ongoing climate change. Here, we study how weather and nest predation influence reproductive output in a social species, and examine whether larger group sizes can mitigate the adverse effects of these factors. We used...

article

Evolutionary disruption in the pollination system of Vanilla (Orchidaceae)

E. R. Pansarin, A. W. C. Ferreira, Z.‐X. Ren

Plant Biology > 24 > 1 > 157 - 167

Pollination of the pantropical Vanilla has been linked to melittophily and food deception. Here we investigated the role of flower traits on the reproduction of Neotropical Vanilla. We also studied the evolution of pollination systems in order to understand the origin of production of flower resources and the diversification of pollinators in this orchid genus. Our study was founded on data of...

article

Influence of unreported HIV prophylaxis on the kinetics of post‐blood donation HIV seroconversion

Anna S. Nishiya, Nanci A. Salles, Cesar Almeida‐Neto, Steven S. Witkin, more

Transfusion > 61 > 12 > 3488 - 3492

Background In 2020, of 110,000 blood donors screened for HIV exposure two individuals were identified who were viral RNA‐positive but seronegative. One of the donors, borderline negative in a pooled screening test for HIV RNA, utilized antiretroviral drugs as post‐exposure, pre‐donation prophylaxis. The kinetics of subsequent HIV seropositivity in both donors are described. Study Design and Methods...

article

A remote emulation environment for the teaching of low‐power wireless communications

Pedro R. Chaves, Raphael M. Assumpção, Luiz C. Ferreira, Paulo Cardieri, more

Computer Applications in Engineering Education > 29 > 6 > 1453 - 1464

The Covid‐19 pandemic has brought about new challenges to educational institutions around the world, as there has been a sudden interest in distance‐learning solutions in the offering of disciplines, including the science and technology ones. Distance‐learning will have a direct impact on the training of professionals that will develop the bespoke Internet of Things (IoT) solutions that homes, offices,...

article

Accelerated aging effects in composites used as repair for pipes in oil industry

Mirella L. da Rocha, Maraisa C. de O. Leite, Evans P. da C. Ferreira, José D. D. Melo, more

Polymer Composites > 42 > 11 > 5918 - 5929

Composites are often employed as repair materials for steel pipelines in the oil industry. Nevertheless, it is known that polymer matrix composites age through service life due to exposure to environmental factors, leading to a decrease in the durability of these repairs. In this work, alterations in glass fiber–epoxy composites aged for 1440, 2880, and 4320 h were studied in two different aging conditions:...

article

Global drivers of avian haemosporidian infections vary across zoogeographical regions

Alan Fecchio, Nicholas J. Clark, Jeffrey A. Bell, Heather R. Skeen, more

Global Ecology and Biogeography > 30 > 12 > 2393 - 2406

Aim Macroecological analyses provide valuable insights into factors that influence how parasites are distributed across space and among hosts. Amid large uncertainties that arise when generalizing from local and regional findings, hierarchical approaches applied to global datasets are required to determine whether drivers of parasite infection patterns vary across scales. We assessed global patterns...

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Search results for: C. Ferreira

Quantifying and mapping species threat abatement opportunities to support national target setting

Tiny steps towards greater knowledge: An osteological review with novel data on the Atlantic Forest toadlets of the Brachycephalus ephippium species group

Squaraine Dyes Derived from Indolenine and Benzo[e]indole as Potential Fluorescent Probes for HSA Detection and Antifungal Agents

Air‐assisted spraying and electrically charged droplets for Bemisia tabaci control in soybeans

Advancing engineering education: Using the three‐phase methodology to teach IoT

An automated treatment planning strategy for highly noncoplanar radiotherapy arc trajectories

An automated bi‐level optimization approach for IMRT

The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study

Modeling Communicable Diseases, Human Mobility, and Epidemics: A Review

Vertical integration in healthcare: What does literature say about improvements on quality, access, efficiency, and costs containment?

Influence of offshore oil and gas structures on seascape ecological connectivity

Effectiveness of a new rutin Cu(II) complex in the prevention of lipid peroxidation and hepatotoxicity in hypercholesterolemic rats

A TpM‐based collaborative system to teach IoT

Gene–gene interactions in the protein kinase C/endothelial nitric oxide synthase axis impact the hypotensive effects of propofol

Disentangling climatic and nest predator impact on reproductive output reveals adverse high‐temperature effects regardless of helper number in an arid‐region cooperative bird

Evolutionary disruption in the pollination system of Vanilla (Orchidaceae)

Influence of unreported HIV prophylaxis on the kinetics of post‐blood donation HIV seroconversion

A remote emulation environment for the teaching of low‐power wireless communications

Accelerated aging effects in composites used as repair for pipes in oil industry

Global drivers of avian haemosporidian infections vary across zoogeographical regions

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