PubAg

Main content area

You searched for: Author "Ramos, Ana" Remove constraint Author: "Ramos, Ana" Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
Start Over

Search

78  Search Results

« Previous | 1 - 20 of 78 |
Number of results to display per page

Search Results

1. A theoretical study on municipal solid waste plasma gasification

Author:
Ramos, Ana,   et al.   ; Tavares, Raquel; Rouboa, Abel;     Show all 3 Authors
Source:
Waste management 2019 v.90 pp. 37-45
ISSN:
0956-053X
Subject:
air; gasification; hydrogen production; model validation; models; mole fraction; municipal solid waste; oxygen; steam; synthesis gas; temperature; waste management
Abstract:
... Gasification is an innovative and effective process which reduces the amount of waste produced by society and affords a synthetic gas with diverse applicability. In this plasma gasification study at high temperatures, a previously developed Aspen Plus model was used for municipal solid waste (MSW). The study is focused on the behavior of the equivalence ratio (ER), steam to MSW (S/MSW) ratio and g ...
DOI:
10.1016/j.wasman.2019.03.051

2. Development of a carboxymethyl xylan film containing licorice essential oil with antioxidant properties to inhibit the growth of foodborne pathogens

Author:
Ramos, Ana,   et al.   ; Luís, Ângelo; Pereira, Luísa; Domingues, Fernanda;     Show all 4 Authors
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.111 pp. 218-225
ISSN:
0023-6438
Subject:
Enterococcus faecalis; Fourier transform infrared spectroscopy; Listeria monocytogenes; ambient temperature; antioxidant activity; antioxidants; biodegradability; contact angle; edible films; essential oils; food pathogens; free radicals; licorice; lipid peroxidation; optical properties; shelf life; storage time; xylan
Abstract:
... Antioxidant and antibacterial edible films based on carboxymethyl xylan with licorice essential oil incorporated were successfully developed. The films were prepared by the casting method and characterized using FTIR. The grammage, thickness, contact angle, mechanical and optical properties of the films were measured, together with the evaluation of their antioxidant, antibacterial and anti-biofil ...
DOI:
10.1016/j.lwt.2019.05.040

3. Wastewater treatment for nutrient removal with Ecuadorian native microalgae

Author:
Ramos, Ana,   et al.   ; Benítez, María Belén; Champagne, Pascale; Torres, Andres F.; Ochoa-Herrera, Valeria;     Show all 5 Authors
Source:
Environmental technology 2019 v.40 no.22 pp. 2977-2985
ISSN:
1479-487X
Subject:
Chlorella; aeration; agitation; algae culture; environmental technology; microalgae; nitrogen; nutrients; phosphorus; photobioreactors; wastewater; wastewater treatment; Ecuador
Abstract:
... The aim of this project was to study the feasibility of utilizing native microalgae for the removal of nitrogen and phosphorus, as a potential secondary wastewater treatment process in Ecuador. Agitation and aeration batch experiments were conducted using synthetic secondary wastewater effluent, to determine nitrogen and phosphorus removal efficiencies by a native Ecuadorian microalgal strain. Exp ...
DOI:
10.1080/09593330.2018.1459874

4. An Eulerian model for forest residues gasification in a plasma gasifier

Author:
Ramos, Ana,   et al.   ; Ismail, Tamer M.; Monteiro, Eliseu; El-Salam, M. Abd; Rouboa, Abel;     Show all 5 Authors
Source:
Energy 2019 v.182 pp. 1069-1083
ISSN:
0360-5442
Subject:
biomass; carbon; carbon dioxide; carbon monoxide; chemical engineering; chemical reactions; gasification; heat transfer; hydrogen; mathematical models; methane; model validation; nitrogen; plant residues; producer gas; temperature; turbulent flow
Abstract:
... A new mathematical model for plasma gasification was adopted and added to the COMMENT homemade code. The COMMENT code is dedicated to coupled transfer applications in the fields of thermal, fluid mechanics and chemical engineering, both solid and gaseous states being assessed. Phenomena like continuity, species transport, heat transfer, turbulence and chemical reactions were taken into account. Pl ...
DOI:
10.1016/j.energy.2019.06.070

5. Blood droplets on functionalized surfaces: Chemical, roughness and superhydrophobic effects

Author:
Ramos, Ana Paula,   et al.   ; do Nascimento, Rodney Marcelo; Ciancaglini, Pietro; Hernandes, Antônio Carlos;     Show all 4 Authors
Source:
Colloids and surfaces 2019 v.574 pp. 188-196
ISSN:
0927-7757
Subject:
Raman spectroscopy; biochemical compounds; blood; chemical treatment; contact angle; droplets; hydrophobicity; models; roughness; silicon; thermodynamics; topology
Abstract:
... This manuscript reports the phenomenology of blood-material interface assessed by contact angle measurements and Raman spectroscopy. In particular, chemistry, topology and superhydrophobic effects on the contact line of blood droplets were investigated by using distinct substrates: Silicon, Ti13Nb13Zr and bioinspired-like PTFE, respectively. The surfaces were functionalized through different proce ...
DOI:
10.1016/j.colsurfa.2019.04.025

6. Use of sodium butyrate in the feeding of Arapaima gigas (Schinz, 1822) juvenile

Author:
Ramos, Ana Paula Souza,   et al.   ; Luz, Joaldo Rocha; Melo, José Fernando Bibiano; Braga, Luís Gustavo Tavares;     Show all 4 Authors
Source:
Aquaculture 2019
ISSN:
0044-8486
Subject:
Arapaima gigas; aeration; ammonia; amylases; aspartate transaminase; blood plasma; blood proteins; carboxylic ester hydrolases; chemical analysis; cholesterol; crude protein; diet; dissolved oxygen; energy; enzyme activity; feed conversion; feed intake; filtration; fish; glucose; glycogen; hematocrit; hepatosomatic index; histology; intestines; juveniles; oxygen; pH; proteinases; satiety; sodium butyrate; specific growth rate; tanks; temperature; triacylglycerols; water quality; weight gain
Abstract:
... The objective of this study was to evaluate the sodium butyrate in the feeding of pirarucu juveniles, Arapaima gigas. Seventy - five juveniles of A. gigas (132.07 ± 3.12 g) were distributed in fifteen 310 L- tanks with constant aeration, filtration system and closed water recirculation. A completely randomized design the experiment, with four treatments including sodium butyrate (98%) in the diets ...
DOI:
10.1016/j.aquaculture.2019.05.065

7. Multilocus fragment analysis of Cryptosporidium parvum from pre-weaned calves in Colombia

Author:
Ramo, Ana,   et al.   ; Avendaño, Catalina; Vergara-Castiblanco, Claudia; Monteagudo, Luis V.; Sánchez-Acedo, Caridad; Quílez, Joaquín;     Show all 6 Authors
Source:
Acta tropica 2019 v.192 pp. 151-157
ISSN:
0001-706X
Subject:
Bayesian theory; Cryptosporidium parvum; DNA; algorithms; alleles; calves; dairy farming; farms; genetic variation; intraspecific variation; linkage disequilibrium; livestock and meat industry; loci; microsatellite repeats; minisatellite repeats; tandem repeat sequences; topology; Colombia
Abstract:
... The intra-species genetic diversity of Cryptosporidium parvum in dairy cattle farms in the central area of Colombia was investigated using a multilocus fragment typing approach with nine variable-number tandem-repeat (VNTR) loci and the gp60 gene. Genomic DNA of 70 C. parvum isolates from pre-weaned calves in 32 farms was analysed. Most markers showed two (ML1, MSB, CP47, and MSC6-7) or three alle ...
DOI:
10.1016/j.actatropica.2019.02.005

8. Which plasticizer is suitable for films based on babassu starch isolated by different methods?

Author:
Ramos, Ana Paula,   et al.   ; Maniglia, Bianca C.; Tessaro, Larissa; Tapia-Blácido, Delia R.;     Show all 4 Authors
Source:
Food hydrocolloids 2019 v.89 pp. 143-152
ISSN:
0268-005X
Subject:
Fourier transform infrared spectroscopy; alkali treatment; antioxidant activity; chemical composition; color; films (materials); food packaging; functional properties; glucose; glycerol; hydrocolloids; hydrophilicity; mechanical properties; opacity; plasticizers; scanning electron microscopy; soaking; sorbitol; starch; urea; water vapor
Abstract:
... This work aimed to determine which plasticizer is suitable for films based on babassu starch isolated by steeping in water (WS), acid steeping (AS), or alkaline steeping (KS) with a view to obtaining less hydrophilic films with good mechanical properties. We used glycerol, sorbitol, glucose, or urea as plasticizers and determined the resulting film physical and functional properties. Plasticizer t ...
DOI:
10.1016/j.foodhyd.2018.10.038

9. Lipid phosphatases SKIP and SHIP2 regulate fibronectin‐dependent cell migration in glioblastoma

Author:
Ramos, Ana Raquel,   et al.   ; Ghosh, Somadri; Dedobbeleer, Matthias; Robe, Pierre A.; Rogister, Bernard; Erneux, Christophe;     Show all 6 Authors
Source:
TheFEBS journal 2019 v.286 no.6 pp. 1120-1135
ISSN:
1742-464X
Subject:
cell adhesion; cell lines; cell movement; cytoskeleton; fibronectins; gene expression; glioblastoma; integrins; lipids; neoplasm cells; phosphoinositide 5-phosphatase; pseudopodia
Abstract:
... Cell migration is an important process that occurs during development and has also been linked to the motility of cancer cells. Cytoskeleton reorganization takes place in the migration process leading to lamellipodia formation. Understanding the molecular underpinnings of cell migration is particularly important in studies of glioblastoma, a highly invasive and aggressive cancer type. Two members ...
DOI:
10.1111/febs.14769

10. Microplastics thermal treatment by polyethylene terephthalate-biomass gasification

Author:
Ramos, Ana,   et al.   ; Tavares, Raquel; Rouboa, Abel;     Show all 3 Authors
Source:
Energy conversion and management 2018 v.162 pp. 118-131
ISSN:
0196-8904
Subject:
air; biomass; gasification; heat treatment; hydrogen; hydrogen production; models; oxygen; plastics; polyethylene terephthalates; steam; synthesis gas; temperature
Abstract:
... In this paper, a previously developed Aspen Plus model for gasification of biomass was adapted to the gasification of microplastics in a temperature range of 400–1200 °C. The effect of parameters such as equivalence ratio (ER), steam-to-biomass ratio (SBR) and gasification temperature in hydrogen production was evaluated, as well as three different gasifying agents namely air, O2 and steam were te ...
DOI:
10.1016/j.enconman.2018.02.001

11. First record of Anastrepha bahiensis Lima (Diptera: Tephritidae) infesting fruits of Averrhoa carambola L. in the eastern Amazon, Brazil

Author:
Ramos, Ana Ruth Ferreira,   et al.   ; Façanha, Thayná Pereira; Lemos, Walkymário de Paulo; Silva, Leandro Carvalho da; Silva, Janisete Gomes;     Show all 5 Authors
Source:
Revista Brasileira de entomologia 2019 v.63 no.4 pp. 275-276
ISSN:
0085-5626
Subject:
Anastrepha; Averrhoa carambola; fruit flies; fruits; Amazonia; Brazil
Abstract:
... We report for the first time field infestation under natural conditions by Anastrepha bahiensis on star fruit (Averrhoa carambola L., Oxalidaceae) in the state of Pará, Eastern Amazon, Brazil. This report reinforces the importance of field infestation studies on fruit flies in the Brazilian Amazon. ...
DOI:
10.1016/j.rbe.2019.07.001

12. Biological control of Gonipterus: Uncovering the associations between eucalypts, weevils and parasitoids in their native range

Author:
Ramos, Ana Paula,   et al.   ; Garcia, André; Allen, Geoff R.; Oberprieler, Rolf G.; Valente, Carlos; Reis, Ana; Franco, José Carlos; Branco, Manuela;     Show all 8 Authors
Source:
Forest ecology and management 2019 v.443 pp. 106-116
ISSN:
0378-1127
Subject:
Anaphes nitens; Cirrospilus; DNA; Eucalyptus globulus; Eucalyptus nitens; Eucalyptus ovata; Eucalyptus salicifolia; Gonipterus scutellatus; adults; biological control; egg masses; eggs; host plants; larvae; male genitalia; parasitism; parasitoids; phylogeny; population growth; surveys; trees; Iberian Peninsula; Tasmania
Abstract:
... The study was initiated by the relative failure of the parasitoid Anaphes nitens in controlling the eucalypt weevil Gonipterus platensis on the Iberian Peninsula. Our aim was to gain insight into the community of Gonipterus egg parasitoids occurring in Tasmania. During surveys in 2016 and 2017, adult weevils and egg pods were collected from Eucalyptus trees in Tasmania. The weevils were identified ...
DOI:
10.1016/j.foreco.2019.04.004

13. Is alkaline phosphatase biomimeticaly immobilized on titanium able to propagate the biomineralization process?

Author:
Ramos, Ana P.,   et al.   ; Andrade, Marco A.R.; Derradi, Rafael; Simão, Ana M.S.; Millán, José Luis; Ciancaglini, Pietro; Bolean, Maytê;     Show all 7 Authors
Source:
Archives of biochemistry and biophysics 2019 v.663 pp. 192-198
ISSN:
0003-9861
Subject:
alkaline phosphatase; biomineralization; bone substitutes; calcium phosphates; coatings; titanium
Abstract:
... Tissue-nonspecific alkaline phosphatase (TNAP) is a key enzyme in the biomineralization process as it produces phosphate from a number of phospho-substrates stimulating mineralization while it also inactivates inorganic pyrophosphate, a potent mineralization inhibitor. We have previously reported on the reconstitution of TNAP on Langmuir monolayers as well as proteoliposomes. In the present study, ...
DOI:
10.1016/j.abb.2019.01.014

14. Marine lobsters and lithodids (Crustacea: Decapoda) from Mauritanian deep-waters (NW Africa)

Author:
Ramos, Ana,   et al.   ; de Matos-Pita, Susana S.; Ramil, Fran;     Show all 3 Authors
Source:
Regional studies in marine science 2018 v.23 pp. 32-38
ISSN:
2352-4855
Subject:
Lithodes; Paralomis; lobsters; marine science; surveys; Africa
Abstract:
... This paper deals with species of the deep-water marine lobsters and lithodids collected on soft and rocky bottoms during the four Spanish Maurit surveys from 2007 to 2010 in Mauritanian waters, at depths between 80 and 2000 m. The collection is represented by eight species included in the infraorders Astacidea, Achelata, and Polychelida, and by five species of the family Lithodidae. The true lobst ...
DOI:
10.1016/j.rsma.2018.01.001

15. Synthesis of Sr–morin complex and its in vitro response: decrease in osteoclast differentiation while sustaining osteoblast mineralization ability

Author:
Ramos, Ana P.,   et al.   ; Cruz, Marcos A. E.; Tovani, Camila B.; Favarin, Bruno Z.; Soares, Mariana P. R.; Fukada, Sandra Y.; Ciancaglini, Pietro;     Show all 7 Authors
Source:
Journal of materials chemistry B 2019 v.7 no.5 pp. 823-829
ISSN:
2050-7518
Subject:
bone health; bone metabolism; flavonoids; magnetism; mineralization; osteoblasts; osteoclasts; osteoporosis; phenolic compounds; strontium; thermogravimetry; ultraviolet-visible spectroscopy
Abstract:
... Strontium ranelate (SrR) has been used as the ultimate choice for osteoporosis treatment. However, the development of more tolerable and bioactive Sr²⁺ carriers is still a need. The design of Sr²⁺-based platforms has moved towards the obtention of anion carriers that can also exhibit a positive effect on bone metabolism. In this sense, we used morin, a natural flavonoid, as a new arrangement for S ...
DOI:
10.1039/c8tb02045k

16. Genetic uniqueness of Cryptosporidium parvum from dairy calves in Colombia

Author:
Ramo, Ana,   et al.   ; Avendaño, Catalina; Vergara-Castiblanco, Claudia; Sánchez-Acedo, Caridad; Quílez, Joaquín;     Show all 5 Authors
Source:
Parasitology research 2018 v.117 no.5 pp. 1317-1323
ISSN:
0932-0113
Subject:
Cryptosporidium bovis; Cryptosporidium parvum; Protozoa; dairy calves; dairy farming; diarrhea; farms; feces; genes; glycoproteins; livestock and meat industry; microscopy; oocysts; probability; ribosomal RNA; sequence analysis; Colombia
Abstract:
... Fecal specimens from 432 pre-weaned calves younger than 35 days were collected over a 2-year period (2010–2012) from 74 dairy cattle farms in the central area of Colombia. These samples were microscopically examined for the presence of Cryptosporidium oocysts, and positive specimens were selected for molecular examination. Microscopy revealed that 115 calves (26.6%) from 44 farms (59.5%) tested po ...
DOI:
10.1007/s00436-018-5818-6

17. Experimental and modeling studies of Portuguese peach stone gasification on an autothermal bubbling fluidized bed pilot plant

Author:
Ramos, Ana,   et al.   ; Monteiro, Eliseu; Ismail, Tamer M.; Abd El-Salam, M.; Brito, Paulo; Rouboa, Abel;     Show all 6 Authors
Source:
Energy 2018 v.142 pp. 862-877
ISSN:
0360-5442
Subject:
bioenergy; biomass; cost effectiveness; energy efficiency; equipment design; fluidized beds; gasification; mass flow; mathematical models; peaches; producer gas; steam; temperature; water content
Abstract:
... Among the renewable energies available, biomass constitutes an auspicious option, due to its environmental-friendly character allied to its significant energy supply. As a path to maximize biomass energy efficiency, gasification has been reported as an adequate technology. Numerical models that can predict and optimize the experimental conditions as well as the equipment design for biomass gasific ...
DOI:
10.1016/j.energy.2017.10.100

18. Thermal treatment and modified atmosphere packaging delay chilling injury and preserve the quality of cactus stems (Opuntia ficus‐indica Mill.) cv Atlixco

Author:
López‐Ramos, Ana M.,   et al.   ; Rodríguez‐Verástegui, Lizette L.; Osorio‐Córdoba, Juliana; Díaz de León‐Sánchez, Fernando; Pérez‐Salvador, Blanca R.; Rivera‐Cabrera, Fernando; Mendoza‐Espinoza, José A.; Pelayo‐Zaldívar, Clara;     Show all 8 Authors
Source:
Journal of food biochemistry 2019 v.43 no.3 pp. e12773
ISSN:
0145-8884
Subject:
Opuntia ficus-indica; adenosine triphosphate; antioxidants; ascorbic acid; cacti and succulents; carbon dioxide; chilling injury; cladodes; color; electrolytes; freshness; functional foods; heat treatment; minimally processed foods; modified atmosphere packaging; response surface methodology; storage temperature; storage time; tissues; vegetables; world markets; Mexico
Abstract:
... Response surface methodology was applied in order to select the optimal thermal treatment (TT) and modified atmosphere packaging (MAP) needed to preserve minimally processed cactus stems, cv Atlixco. Accordingly, a 42 s/48°C TT together with a 10% CO₂ MAP were selected, and their effects evaluated during storage at 4°C. Controls lost more weight (3.8%) than TT (3.3%), MAP (1.4%), and TT‐MAP (1.3%) ...
DOI:
10.1111/jfbc.12773

19. Occurrence of Cryptosporidium and Giardia in raw and finished drinking water in north-eastern Spain

Author:
Ramo, Ana,   et al.   ; Del Cacho, Emilio; Sánchez-Acedo, Caridad; Quílez, Joaquín;     Show all 4 Authors
Source:
The Science of the total environment 2017 v.580 pp. 1007-1013
ISSN:
0048-9697
Subject:
Cryptosporidium; Giardia; United States Environmental Protection Agency; autumn; coagulation; disinfection; drinking water; filtration; flocculation; oocysts; parasites; pathogens; propidium; public health; towns; turbidity; water treatment; winter; Spain
Abstract:
... This paper collects the first large-sample-size study on the presence of Cryptosporidium oocysts and Giardia cysts in drinking water plants at the 20 most populated towns in Aragón (north-eastern Spain). Samples of influent raw water and effluent finished water were collected from each plant during different seasons and processed according to USEPA Method 1623. Cryptosporidium oocysts and Giardia ...
DOI:
10.1016/j.scitotenv.2016.12.055

20. Occurrence and genetic diversity of Cryptosporidium and Giardia in urban wastewater treatment plants in north-eastern Spain

Author:
Ramo, Ana,   et al.   ; Del Cacho, Emilio; Sánchez-Acedo, Caridad; Quílez, Joaquín;     Show all 4 Authors
Source:
The Science of the total environment 2017
ISSN:
0048-9697
Subject:
Cryptosporidium; Giardia; United States Environmental Protection Agency; activated sludge; chlorination; effluents; environmental impact; genetic variation; loci; microfiltration; oocysts; public health; risk; sewage sludge; summer; towns; ultraviolet radiation; wastewater; wastewater treatment; Spain
Abstract:
... This study was designed to investigate the presence and removal efficiency of Cryptosporidium and Giardia in wastewater treatment plants at the 20 most populated towns in Aragón (north-eastern Spain). Samples of influent and effluent wastewater and dewatered sewage sludge were collected seasonally from 23 plants and processed according to USEPA Method 1623. All samples from raw and treated wastewa ...
DOI:
10.1016/j.scitotenv.2017.04.097