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Search Results: 1 - 10 of 360059 matches for " Anita G;Arcos-Terán "
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Life cycle, feeding and defecation patterns of Rhodnius ecuadoriensis (Lent & León 1958) (Hemiptera: Reduviidae: Triatominae) under laboratory conditions
Villacís, Anita G;Arcos-Terán, Laura;Grijalva, Mario J;
Memórias do Instituto Oswaldo Cruz , 2008, DOI: 10.1590/S0074-02762008000700011
Abstract: rhodnius ecuadoriensis is the second most important vector of chagas disease (cd) in ecuador. the objective of this study was to describe (and compare) the life cycle, the feeding and defecation patterns under laboratory conditions of two populations of this specie [from the provinces of manabí (coastal region) and loja (andean region)]. egg-to-adult (n = 57) development took an average of 189.9 ± 20 (manabí) and 181.3 ± 6.4 days (loja). mortality rates were high among lojan nymphs. pre-feeding time (from contact with host to feeding initiation) ranged from 4 min 42 s [nymph i (ni)] to 8 min 30 s (male); feeding time ranged from 14 min 45 s (ni)-28 min 25 s (male) (manabí) and from 15 min 25 s (ni)-28 min 57 s (nymph v) (loja). the amount of blood ingested increased significantly with instar and was larger for manabí specimens (p < 0.001). defecation while feeding was observed in manabí specimens from stage nymph iii and in lojan bugs from stage nymph iv. there was a gradual, age-related increase in the frequency of this behaviour in both populations. our results suggest that r. ecuadoriensis has the bionomic traits of an efficient vector of trypanosoma cruzi. together with previous data on the capacity of this species to infest rural households, these results indicate that control of synanthropic r. ecuadoriensis populations in the coastal and andean regions may have a significant impact for cd control in ecuador and northern peru.
Absence of domestic triatomine colonies in an area of the coastal region of Ecuador where Chagas disease is endemic
Grijalva, Mario J;Palomeque, Francisco S;Villacís, Anita G;Black, Carla L;Arcos-Terán, Laura;
Memórias do Instituto Oswaldo Cruz , 2010, DOI: 10.1590/S0074-02762010000500013
Abstract: rhodnius ecuadoriensis is considered the second most important vector of chagas disease in ecuador. it is distributed across six of the 24 provinces and occupies intradomiciliary, peridomiciliary and sylvatic habitats. this study was conducted in six communities within the coastal province of guayas. triatomine searches were conducted in domestic and peridomestic habitats and bird nests using manual searches, live-bait traps and sensor boxes. synantrhopic mammals were captured in the domestic and peridomestic habitats. household searches (n = 429) and randomly placed sensor boxes (n = 360) produced no live triatomine adults or nymphs. in contrast, eight nymphs were found in two out of six searched campylorhynchus fasciatus (troglodytidae) nests. finally, trypanosoma cruzi dna was amplified from the blood of 10% of the 115 examined mammals. environmental changes in land use (intensive rice farming), mosquito control interventions and lack of intradomestic adaptation are suggested among the possible reasons for the lack of domestic triatomine colonies.
Salivary Defense Proteins: Their Network and Role in Innate and Acquired Oral Immunity
Tibor Károly Fábián,ter Hermann,Anita Beck,Pál Fejérdy,Gábor Fábián
International Journal of Molecular Sciences , 2012, DOI: 10.3390/ijms13044295
Abstract: There are numerous defense proteins present in the saliva. Although some of these molecules are present in rather low concentrations, their effects are additive and/or synergistic, resulting in an efficient molecular defense network of the oral cavity. Moreover, local concentrations of these proteins near the mucosal surfaces (mucosal transudate), periodontal sulcus (gingival crevicular fluid) and oral wounds and ulcers (transudate) may be much greater, and in many cases reinforced by immune and/or inflammatory reactions of the oral mucosa. Some defense proteins, like salivary immunoglobulins and salivary chaperokine HSP70/HSPAs (70 kDa heat shock proteins), are involved in both innate and acquired immunity. Cationic peptides and other defense proteins like lysozyme, bactericidal/permeability increasing protein (BPI), BPI-like proteins, PLUNC (palate lung and nasal epithelial clone) proteins, salivary amylase, cystatins, prolin-rich proteins, mucins, peroxidases, statherin and others are primarily responsible for innate immunity. In this paper, this complex system and function of the salivary defense proteins will be reviewed.
Noticias de las tribus de salvajes conocidos que habitan en el Departamento de Tejas, y del número de familias de que consta cada tribu, punto en que habitan y terrenos en que acampan (1828)
G. Terán
Nueva antropología , 1982,
Bounds on the Number of Edges Bound on the Number of Edges of Edge-minimal, Edge-maximal and $l$-hypertrees
ter G. N. Szabó
Mathematics , 2014,
Abstract: In [6] G. Y. Katona and P. G. N. Szab\'o introduced a new natural definition of hypertrees in $k$-uniform hypergraphs and gave lower and upper bounds on the number of edges. They also defined edge-minimal, edge-maximal and $l$-hypertrees and proved an upper bound on the edge-number of $l$-hypertrees. In the present paper, we verify the sharpness of the $\binom{n}{k-1}$ upper bound for the number of edges of $k$-uniform hypertrees given in [6]. We also make an improvement on the upper bound of the edge-number of $2$-hypertrees and give a general construction with its consequences. We give lower and upper bounds on the maximal number of edges in $k$-uniform edge-minimal hypertrees and a lower bound on the number of edges in $k$-uniform edge-maximal hypertrees. In the first case, the sharp upper bound is conjectured to be asymptotically $\frac{1}{k-1}\binom{n}{2}$.
Mixed-state transport characteristics of magnesium diboride films
Kunchur M. N.,Cheng Wu,Arcos D. H.,Saracila G.
Brazilian Journal of Physics , 2003,
Abstract: We have investigated the low-temperature (T < Tc=10) mixed-state current-voltage (IV) response of magnesium diboride films beyond the point where the superconductivity is completely destroyed and the system enters the normal state. The resistance-versus-current R(I) curves are extremely steep and featureless, with a critical current density j c, marking the onset of dissipation, that is unusually high (j c>j d/10) with respect to the depairing current density j d. At large flux densities Hc2/10 B Hc2, the R(I) curve has a functional shape that is largely independent of B, indicating that the rise in resistivity with increasing current occurs mainly due to pair-breaking rather than flux motion. The macroscopic destruction current I*, which drives the system normal, has a flux-density dependence, suggesting that the vortices mainly reduce the effective cross section over which a current of effective density j ~ j d flows.
Hormazabal,S; Nú?ez,S; Arcos,D; Espindola,F; Yuras,G;
Gayana (Concepción) , 2004, DOI: 10.4067/S0717-65382004000200053
Abstract: the rich biological productivity within the peru-chile current system depends mainly on wind-driven coastal upwelling, which brings colder, nutrient-rich, subsurface waters into the illuminated upper layer, promoting high phytoplankton productivity whish is available for zooplankton and ultimately for fish. off central chile (29-39°s), where strong mesoscale eddies and meanders characterize the coastal transition zone (ctz), we are using hydrographic data, hydroacustic fish-biomass data and satellite information of wind stress, sea level anomalies and chlorophyll, to investigate linkages between mesoscale eddies and meanders and pelagic fish spatial variability. satellite and in situ data showed that mesoscale structures have a strong association with primary production enhancement in the ctz. in this region, mesoscale eddies have a coherent vertical structure above 600 m depth, and generate an offshore transport of 2x106 m3 s-1 which would be exerting an important influence on upper trophic levels in oceanic waters. a good relationship between mesoscale eddies and temporal-spatial fish distribution has been observed. the different responses of biological-physical interactions associated with mesoscale structure are also discussed. grant from fip, fondecyt n°1040618 and fisheries research institute
Desarrollo de una bebida de alto contenido proteico a partir de algarrobo, lupino y quinoa para la dieta de preescolares
Cerezal Mezquita,P.; Acosta Barrientos,E.; Rojas Valdivia,G.; Romero Palacios,N.; Arcos Zavala,R.;
Nutrición Hospitalaria , 2012,
Abstract: this research was aimed at developing a high content protein beverage from the mixture of liquid extracts of a pseudocereal, quinoa (chenopodium quinoa willd) and two legumes: mesquite (prosopis chilensis (mol.) stunz) and lupine (lupinus albus l.), native from the andean highlands of the chilean northern macro-zone, flavored with raspberry pulp, to help in the feeding of children between 2 and 5 years of lower socioeconomic status with nutritional deficiencies. the formulation was defined by linear programming, its composition was determined by proximate analysis and physical, microbiological and sensory acceptance tests were performed. after 90 days of storage time, the beverage got a protein content of 1.36%, being tryptophan the limiting amino acid; for its part, the chromaticity coordinates of ciel*a*b* color space showed no statistical significant differences (p < 0.05) maintaining the "dark pink" tonality, the viscosity and the sensory evaluation were acceptable for drinking.
Experiences and Conclusions of the Hungarian Emergency Sepsis Register  [PDF]
ter Kanizsai, Tamás Berényi, Miklós Pálv?lgyi, János Gál, Zoltán Pet?
Open Journal of Epidemiology (OJEpi) , 2017, DOI: 10.4236/ojepi.2017.71005
Abstract: Objective: Early recognition is a key step in decreasing morbidity and mortality in sepsis. Like in other European countries an ever growing number of septic patients enter hospitals via emergency departments. Our goal was to assess the number and severity of patients with sepsis, severe sepsis and septic shock attending the Hungarian emergency departments. Methods: Two-hundred and ninety-nine patients were entered into the Hungarian Emergency Sepsis Register, focusing on age, disease severity, monitoring and oxygenation. Application and time of administration of antibiotics, use of biomarkers, i.e. lactate and procalcitonin, disposition of patients were assessed using a web-based electronic questionnaire. Results: Data arriving from twenty emergency departments revealed that with severity of the disease oxygen administration and level of monitoring increased, along with antibiotic administration and use of biomarkers. Time spent in the ED did not differ between septic, severely septic and septic shock patients; however higher level of care was provided for the sickest patients. Conclusion: Our register data indicate that sepsis presents a substantial challenge to Hungarian emergency departments. The set standards for timely, adequate treatment are not yet met. The results are however also influenced by characteristics of the Hungarian health care system, most notably the lack of hospice systems. Further studies are needed to separate the subset of patients who would require and of life care.
Ignacio Gutiérrez de Terán Gómez-Benita
Revista CIDOB d'Afers Internacionals , 2011,
Abstract: This article covers – firstly and generally speaking – the gradual process of confrontation between traditional African Islam (and particularly the Sufi brotherhoods) and the Salafist tendencies that became established in the continent some time ago. Taking the chronic case of Somalia as an example, the author stresses the fact that in addition to doctrinal differences, it is also important to note that social, economic and cultural factors have also helped to aggravate tensions. These, nevertheless, have even erupted in the heart of organisations backing political Islam, in many cases of Wahhabi origin, owing partly to geostrategic determining factors, and partly to the turbulent debate on the advisability of incorporating processes of national reform and reconciliation. Furthermore, and in a way that is reminiscent of a number of antecedents in countries such as Algeria and Afghanistan, the controversy is focused around which strategy to adopt to fight the local leaders who have been labelled as corrupt, and how to link up with the regional and international powers involved in the conflict. Thus, an extreme Somalisation has also reached African Islamist movements, as can be seen in the current fragmentation of Islamism over much of the continent.
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