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  1. Article: Sugarcane-Biorefinery.

    Vaz, Sílvio

    Advances in biochemical engineering/biotechnology

    2017  Volume 166, Page(s) 125–136

    Abstract: Concepts such as biorefinery and green chemistry focus on the usage of biomass, as with the oil value chain. However, it can cause less negative impact on the environment. A biorefinery based on sugarcane (Saccharum spp.) as feedstock is an example, ... ...

    Abstract Concepts such as biorefinery and green chemistry focus on the usage of biomass, as with the oil value chain. However, it can cause less negative impact on the environment. A biorefinery based on sugarcane (Saccharum spp.) as feedstock is an example, because it can integrate into the same physical space, of processes for obtaining biofuels (ethanol), chemicals (from sugars or ethanol), electricity, and heat.The use of sugarcane as feedstock for biorefineries is dictated by its potential to supply sugars, ethanol, natural polymers or macromolecules, organic matter, and other compounds and materials. By means of conversion processes (chemical, biochemical, and thermochemical), sugarcane biomass can be transformed into high-value bioproducts to replace petrochemicals, as a bioeconomy model.
    MeSH term(s) Biofuels ; Biomass ; Ethanol ; Saccharum
    Chemical Substances Biofuels ; Ethanol (3K9958V90M)
    Language English
    Publishing date 2017-03-16
    Publishing country Germany
    Document type Journal Article
    ISSN 0724-6145
    ISSN 0724-6145
    DOI 10.1007/10_2016_70
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  2. Article ; Online: A dynamically-consistent nonstandard finite difference scheme for the SICA model.

    Vaz, Sandra / Torres, Delfim F M

    Mathematical biosciences and engineering : MBE

    2021  Volume 18, Issue 4, Page(s) 4552–4571

    Abstract: In this work, we derive a nonstandard finite difference scheme for the SICA (Susceptible-Infected-Chronic-AIDS) model and analyze the dynamical properties of the discretized system. We prove that the discretized model is dynamically consistent with the ... ...

    Abstract In this work, we derive a nonstandard finite difference scheme for the SICA (Susceptible-Infected-Chronic-AIDS) model and analyze the dynamical properties of the discretized system. We prove that the discretized model is dynamically consistent with the continuous, maintaining the essential properties of the standard SICA model, namely, the positivity and boundedness of the solutions, equilibrium points, and their local and global stability.
    Language English
    Publishing date 2021-07-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2265126-3
    ISSN 1551-0018 ; 1551-0018
    ISSN (online) 1551-0018
    ISSN 1551-0018
    DOI 10.3934/mbe.2021231
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  3. Book ; Online: Discrete-Time System of an Intracellular Delayed HIV Model with CTL Immune Response

    Vaz, Sandra / Torres, Delfim F. M.

    2022  

    Abstract: In [Math. Comput. Sci. 12 (2018), no. 2, 111--127], a delayed model describing the dynamics of the Human Immunodeficiency Virus (HIV) with Cytotoxic T Lymphocytes (CTL) immune response is investigated by Allali, Harroudi and Torres. Here, we propose a ... ...

    Abstract In [Math. Comput. Sci. 12 (2018), no. 2, 111--127], a delayed model describing the dynamics of the Human Immunodeficiency Virus (HIV) with Cytotoxic T Lymphocytes (CTL) immune response is investigated by Allali, Harroudi and Torres. Here, we propose a discrete-time version of that model, which includes four nonlinear difference equations describing the evolution of uninfected, infected, free HIV viruses, and CTL immune response cells and includes intracellular delay. Using suitable Lyapunov functions, we prove the global stability of the disease free equilibrium point and of the two endemic equilibrium points. We finalize by making some simulations and showing, numerically, the consistence of the obtained theoretical results.

    Comment: This is a preprint whose final form is published by Springer Nature Switzerland AG in the book 'Dynamic Control and Optimization'
    Keywords Mathematics - Dynamical Systems ; Quantitative Biology - Quantitative Methods
    Publishing date 2022-05-04
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Co-occurrence of phonological traits in orthographic replacement of sonorant phonemes.

    Vaz, Suellen / Chacon, Lourenço

    CoDAS

    2020  Volume 32, Issue 2, Page(s) e20180205

    Abstract: Purpose: This short presentation aims to indicate phonological features inherent to the sonorant consonant class (nasals and liquids) that might be relatively problematic in the orthographic records of these phonemes.: Methods: orthographic ... ...

    Title translation Coocorrência de traços fonológicos em substituições ortográficas de fonemas soantes.
    Abstract Purpose: This short presentation aims to indicate phonological features inherent to the sonorant consonant class (nasals and liquids) that might be relatively problematic in the orthographic records of these phonemes.
    Methods: orthographic replacement in text compositions from children in the first grade of elementary school was analyzed. Data analysis was performed according to the Padrão de Aquisição de Contrastes (PAC).
    Results: Results reveal that replacement was distributed between the two classes, and within each subclass, relatively unstable phonological contrasts were detected in the orthographic records of these phonemes.
    Conclusion: This relative instability of contrasts pointed out phonological issues, as well as issues related to the orthographic complexity of each these segments, thus indicating a non-direct relation between speech and spelling.
    MeSH term(s) Child ; Child Language ; Handwriting ; Humans ; Phonetics ; Speech
    Language English
    Publishing date 2020-03-23
    Publishing country Brazil
    Document type Journal Article
    ISSN 2317-1782
    ISSN (online) 2317-1782
    DOI 10.1590/2317-1782/20192018205
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  5. Article ; Online: Corrigendum to

    Weselman, Tammy / Naseri, Chiara / Vaz, Sharmila / Beilby, Janet / Garswood, Luke / O'Connell, Hilary / Hill, Anne-Marie

    Australian journal of primary health

    2024  Volume 30

    Language English
    Publishing date 2024-04-02
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2566332-X
    ISSN 1836-7399 ; 1448-7527
    ISSN (online) 1836-7399
    ISSN 1448-7527
    DOI 10.1071/PY22153_CO
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  6. Article: Structural aortic wall abnormalities following the Nikaidoh operation, which could be reversible and include a healing process.

    Yacoub, Magdi H / Afifi, Ahmed / Hosny, Hatem / Mahgoub, Ahmed / Nagy, Mohamed / Vaz, Sanida / Sarathchandra, Padmini / Latif, Najma

    Global cardiology science & practice

    2024  Volume 2024, Issue 1, Page(s) e202403

    Abstract: The Nikaidoh operation continues to be used for patients with transposition of the great arteries, ventricular septal defect and left ventricular outflow tract obstruction. We recently reported structural and functional changes in the aortic root during ... ...

    Abstract The Nikaidoh operation continues to be used for patients with transposition of the great arteries, ventricular septal defect and left ventricular outflow tract obstruction. We recently reported structural and functional changes in the aortic root during the follow-up of a patient who underwent the Nikaidoh operation. These changes necessitated re-operation. The pathophysiology of these changes and their potential for reversibility have not yet been studied. In this communication, we describe the extensive structural changes in the aortic wall of the same patient.
    Language English
    Publishing date 2024-01-03
    Publishing country Qatar
    Document type Case Reports
    ZDB-ID 2738381-7
    ISSN 2305-7823
    ISSN 2305-7823
    DOI 10.21542/gcsp.2024.3
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  7. Article ; Online: Comparison of different measuring methods in the assessment of the ISNT rule and its variants in a normal population: A cross-sectional study.

    Soares, Ivo / Gravito-Soares, Marta / Gravito-Soares, Elisa / Vaz, Sandra / Almeida, Vasco

    Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)

    2023  Volume 43, Issue 5, Page(s) 1190–1202

    Abstract: Purpose: The aim of this study was to compare five different neuroretinal rim (NRR) measurement methods, based on quadrants and NRR widths, in the assessment of the ISNT (inferior (I) > superior (S) > nasal (N) > temporal (T)) rule, and its variants IST ...

    Abstract Purpose: The aim of this study was to compare five different neuroretinal rim (NRR) measurement methods, based on quadrants and NRR widths, in the assessment of the ISNT (inferior (I) > superior (S) > nasal (N) > temporal (T)) rule, and its variants IST (inferior (I) > superior (S) > temporal (S)) rule, IS (inferior (I) > superior (S)) rule and T (temporal is the thinnest) rule in a normal population. Factors influencing compliance with this rule and its variants were also evaluated.
    Methods: Stereoscopic fundus images were analysed through a dichoptic viewing system. Two graders labelled the optic disc and cup, as well as the fovea. Custom-made software automatically determined the limits of the optic disc and cup and examined the ISNT rule and its variants using several NRR measurement methods.
    Results: Sixty-nine subjects with normal eyes were enrolled. For the various NRR measuring methods, the percentage of eyes following the rules, that is, validity ranges were 0.0%-15.9% for the ISNT rule, 31.9%-59.4% for the IST rule, 46.4%-59.4% for the IS rule and 50.7%-100.0% for the T rule. Significant intra-measurement agreement ranges were IST (κ = 0.50-0.85), IS (κ = 0.68-1.00) and T (κ = 0.24-0.77). Only the IST and IS rules achieved significant inter-measurement agreement (κ = 0.47-1.00). After multivariate and receiver operating characteristic (ROC) curve analyses, the vertical cup position cup
    Conclusions: Only the IST and IS rules are valid for the same normal subjects. The most important factor affecting the validity of the ISNT rule and its variants was the anatomical cup position. NRR measurement agreements based on NRR quadrants exhibited larger validity and better agreement. The IST and IS rules can be combined with the alternative SIT (superior (S) > inferior (I) > temporal (T)) and SI (superior (S) > inferior (I)) rules to detect almost all normal subjects.
    MeSH term(s) Humans ; Cross-Sectional Studies ; Tomography, Optical Coherence/methods ; Optic Disk ; ROC Curve ; Retinal Ganglion Cells ; Intraocular Pressure
    Language English
    Publishing date 2023-05-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 604564-9
    ISSN 1475-1313 ; 0275-5408
    ISSN (online) 1475-1313
    ISSN 0275-5408
    DOI 10.1111/opo.13171
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  8. Article ; Online: Firefly (Coleoptera, Lampyridae) species from the Atlantic Forest hotspot, Brazil

    Vaz, Stephanie / Mendes, Mari / Khattar, Gabriel / Macedo, Margarete / Ronquillo, Cristina / Zarzo-Arias, Alejandra / Hortal, Joaquín / Silveira, Luiz

    Biodiversity Data Journal. 2023 Mar. 23, v. 11 p.e101000-

    2023  

    Abstract: We compiled a database of firefly species records from the Atlantic Forest hotspot in Brazil and made it available at GBIF. Data were gathered from literature and from several key entomological collections, including: Coleção entomológica Prof. José ... ...

    Abstract We compiled a database of firefly species records from the Atlantic Forest hotspot in Brazil and made it available at GBIF. Data were gathered from literature and from several key entomological collections, including: Coleção entomológica Prof. José Alfredo Pinheiro Dutra (DZRJ/UFRJ) and Coleção do Laboratório de Ecologia de Insetos from Universidade Federal do Rio de Janeiro (CLEI/UFRJ); Coleção Entomológica do Instituto Oswaldo Cruz (CEIOC); Museu de Zoologia da Universidade de São Paulo (MZSP); Coleção Entomológica Pe. Jesus Santiago Moure from Universidade Federal do Paraná (DZUP/UFPR); and Coleção Entomológica from Universidade Federal Rural de Pernambuco (UFRPE). This database represents the largest contribution to a public repository of recorded occurrences from Neotropical fireflies. This dataset shows the occurrence and abundance of firefly species in the Atlantic Forest hotspot. Firefly species endemic to this biome are also present and considered in the study. These data can assist scientific and societal needs, by supporting future research projects and conservation decision-making.
    Keywords Lampyridae ; Neotropics ; biodiversity ; data collection ; databases ; decision making ; ecosystems ; forests ; Brazil ; dataset ; species occurrences ; endemism ; rainforest ; South America
    Language English
    Dates of publication 2023-0323
    Publishing place Pensoft Publishers
    Document type Article ; Online
    ZDB-ID 2736709-5
    ISSN 1314-2828
    ISSN 1314-2828
    DOI 10.3897/BDJ.11.e101000
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  9. Article ; Online: The association between delayed amniotomy and adverse outcomes in labor induction.

    Battarbee, Ashley N / Vaz, Sharon / Stamilio, David M

    European journal of obstetrics, gynecology, and reproductive biology

    2020  Volume 247, Page(s) 85–89

    Abstract: Objective: To assess if delayed amniotomy during labor induction is associated with adverse delivery outcomes.: Study design: Retrospective cohort study of women with a viable, singleton gestation who underwent labor induction at a tertiary-care ... ...

    Abstract Objective: To assess if delayed amniotomy during labor induction is associated with adverse delivery outcomes.
    Study design: Retrospective cohort study of women with a viable, singleton gestation who underwent labor induction at a tertiary-care hospital (4/2014-3/2017). Women were excluded if oxytocin was not used or if spontaneous rupture of membranes (ROM) occurred ≤8 h after oxytocin initiation. The primary outcome was cesarean delivery, and secondary outcomes included postpartum hemorrhage, maternal infectious morbidity, neonatal 5-min Apgar score <7, and neonatal intensive care unit admission. Women were compared by timing of amniotomy: delayed (ROM > 8 h after oxytocin initiation) versus not delayed. Multivariable logistic regression was used to estimate the association between delayed amniotomy and study outcomes.
    Results: Of 2081 women who met inclusion criteria, 1125 (before 54%) had delayed amniotomy. Women with delayed amniotomy had ROM 12.7 h (IQR 10.0, 17.9) after oxytocin versus 5.0 h (IQR 3.7, 6.5) without delayed amniotomy. In multivariable regression, delayed amniotomy was associated with increasingly higher odds of cesarean as maternal obesity severity increased (aOR 1.58, 95 %CI 1.24-2.03 at BMI 30 kg/m
    Conclusion: Delayed amniotomy >8 h after starting oxytocin for labor induction was associated with higher odds of cesarean delivery. Significant delay in ROM should be avoided during labor induction.
    MeSH term(s) Adult ; Amniotomy/adverse effects ; Amniotomy/methods ; Body Mass Index ; Case-Control Studies ; Cesarean Section/statistics & numerical data ; Female ; Humans ; Infant, Newborn ; Male ; Oxytocin/administration & dosage ; Postpartum Hemorrhage/epidemiology ; Postpartum Hemorrhage/etiology ; Pregnancy ; Pregnancy Outcome/epidemiology ; Retrospective Studies ; Time Factors ; Young Adult
    Chemical Substances Oxytocin (50-56-6)
    Language English
    Publishing date 2020-02-05
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 190605-7
    ISSN 1872-7654 ; 0301-2115 ; 0028-2243
    ISSN (online) 1872-7654
    ISSN 0301-2115 ; 0028-2243
    DOI 10.1016/j.ejogrb.2020.02.002
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 837: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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  10. Article: [Macrovipera lebetina obtusa Snake Venom as a Modulator of Antitumor Effect in S-180 Sarcoma Mouse Model].

    Ghazaryan, N / Movsisyan, N / Macedo, J C / Vaz, S / Ayvazyan, N / Pardo, L / Logarinho, E

    Molekuliarnaia biologiia

    2021  Volume 55, Issue 3, Page(s) 468–477

    Abstract: Macrovipera lebetina obtusa (MLO) is a venomous snake endemic to Middle East. Here we describe the therapeutic potential of the MLO snake venom. In S-180 sarcoma-bearing mouse model, we showed that the MLO snake venom inhibits tumour growth by 50%. In ... ...

    Abstract Macrovipera lebetina obtusa (MLO) is a venomous snake endemic to Middle East. Here we describe the therapeutic potential of the MLO snake venom. In S-180 sarcoma-bearing mouse model, we showed that the MLO snake venom inhibits tumour growth by 50%. In human dermal microvascular endothelial cells (HMVEC-D), treatment with the MLO snake venom lead to an increase of expression levels of the vascular endothelial growth factor (VEGF), while the level of the expression of caspase 8 did not change. In HMVEC-D cells MLO snake venom induces necroptosis, rather than apoptosis. In the chick embryo chorioallantoic membrane (CAM) assay, exposure to MLO snake venom inhibited bFGF-induced angiogenesis by 22%. Taken together, these results indicate that the MLO snake venom has a potent cytotoxic activity. Regulated necroptic cell death pathway, which is engaged by MLO snake venom, may become a promising novel target for antitumor therapies.
    MeSH term(s) Animals ; Chick Embryo ; Endothelial Cells ; Mice ; Sarcoma/drug therapy ; Vascular Endothelial Growth Factor A ; Viper Venoms ; Viperidae
    Chemical Substances Vascular Endothelial Growth Factor A ; Viper Venoms
    Language Russian
    Publishing date 2021-04-29
    Publishing country Russia (Federation)
    Document type Journal Article
    ZDB-ID 213542-5
    ISSN 0026-8984
    ISSN 0026-8984
    DOI 10.31857/S0026898421030071
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