The University of San Agustin is a private Catholic university in Iloilo City, Philippines. With 40 initial students, it was established in 1904 as a preparatory school for boys by the Spanish Catholic missionaries under the oldest religious Roman Catholic order in the Philippines during the American colonial period, the Order of Saint Augustine . In 1917, it was incorporated and became Colegio de San Agustin de Iloilo. In March 1953, San Agustin attained university status making it the First University in Western Visayas. San Agustin is the first and only Augustinian university in the Asia-Pacific region.University of San Agustin now provides programs from Basic Education up to post graduate studies in the areas of Business, Education, Computer Studies, Arts and science, Performing Arts, Music, Engineering, Medical Technology, Nursing and Pharmacy. In 2013, the university celebrated its 60th year as an institution of higher learning. Wikipedia.
Prieto I.,CSIC - Estacion Experimental De Zonas Aridas |
Martinez-Tilleria K.,University of La Serena |
Martinez-Manchego L.,University of San Agustin |
Montecinos S.,University of La Serena |
And 2 more authors.
Oecologia | Year: 2010
Hydraulic lift (HL) is the passive movement of water through the roots from deep wet to dry shallow soil layers when stomata are closed. HL has been shown in different ecosystems and species, and it depends on plant physiology and soil properties. In this study we explored HL patterns in several arid land shrubs, and developed a simple model to simulate the temporal evolution and magnitude of HL during a soil drying cycle under relatively stable climatic conditions. This model was then used to evaluate the influence of soil texture on the quantity of water lifted by shrubs in different soil types. We conducted transpiration suppression experiments during spring 2005 in Chile and spring 2008 in Spain on five shrub species that performed HL, Flourensia thurifera, Senna cumingii and Pleocarphus revolutus (Chile), Retama sphaerocarpa and Artemisia barrelieri (Spain). Shrubs were covered with a black, opaque plastic fabric for a period of 48-72 h, and soil water potential was recorded at different depths under the shrubs. While the shrubs remained covered, water potential continuously increased in shallow soil layers until the cover was removed. The model output indicated that the amount of water lifted by shrubs is heavily dependent on soil texture, as shrubs growing in loamy soils redistributed up to 3.6 times more water than shrubs growing on sandy soils. This could be an important consideration for species growing in soils with different textures, as their ability to perform HL would be context dependent. © Springer-Verlag 2010.
Tobias J.A.,University of Oxford |
Gamarra-Toledo V.,University of Los Andes, Colombia |
Gamarra-Toledo V.,University of San Agustin |
Pulgarin P.C.,University of Antioquia |
Seddon N.,University of Oxford
Journal of Evolutionary Biology | Year: 2011
The evolution of sexually monomorphic (i.e. mutual) ornamentation has attracted growing attention as a 'blind-spot' in evolutionary biology. The popular consensus is that female ornaments are subject to the same modes of sexual selection as males: intrasexual competition and mate choice. However, it remains unclear how these forces interact within and between sexes, or whether they fully capture selection on female traits. One possibility is that the 'armament-ornament' model - which proposes that traits used primarily in male-male contests are also co-opted by females as indicators of male quality - can be extended to explain signal evolution in both sexes. We examine this idea by testing the function of acoustic signals in two species of duetting antbirds. Behavioural observations and playback experiments suggest that male and female songs function primarily as armaments in competitive interactions. Removal experiments reveal that song is also a classic ornament used by unpaired males and females to advertise for mates. These results indicate that 'armament-ornament' processes may operate in reciprocal format, potentially explaining widespread mutual ornamentation in species with elevated intrasexual competition for resources. In addition, given that songs mediate competition between species outside the breeding season, our findings suggest that processes shaping monomorphic ornaments extend beyond the traditional definitions of sexual selection and are best understood in the broader framework of social selection. © 2011 The Authors. Journal of Evolutionary Biology © 2011 European Society For Evolutionary Biology.
Florez O.U.,Utah State University |
Ocsa A.,University of San Agustin |
Dyreson C.,Utah State University
MIR 2010 - Proceedings of the 2010 ACM SIGMM International Conference on Multimedia Information Retrieval | Year: 2010
This paper introduces a novel hashing algorithm for large timeseries databases, which can improve the querying of human motion. Timeseries that represent human motion come from many sources, in particular, videos and motion capture systems. Motion-related timeseries have features which are not commonly present in traditional types of vector data and that create additional indexing challenges: high and variable dimensionality, no Euclidean distance without normalization, and a metric space not fully defined. New techniques are needed to index motion-related timeseries. The algorithm that we present in this paper generalizes the dot product operator to hash timeseries of variable dimensionality without assuming constant dimensionality or requiring dimensionality normalization, unlike other approaches. By avoiding normalization, our hashing algorithm preserves more timeseries information and improves retrieval accuracy, and by hashing achieves sublinear computation time for most searches. Additionally, we show how to further improve the hashing by partitioning the search space using timeseries within the index. This paper also reports the results of experiments that show that the algorithm performs well in the querying of real human motion datasets. Copyright 2010 ACM.
Ortiz M.I.,Autonomous University of the State of Hidalgo |
Ortiz M.I.,University of San Agustin
Pain Research and Management | Year: 2013
BACKGROUND: There is evidence that biguanide3 and sulfonylurea: block diclofenac-induced antinociception (DIA) in rat models. However, little i3 known about tke interaction between these hypoglycemics with respect to DIA. OBJECTIVE: To determine whether metformin-sulfonylurea combinations affect DIA during the formalin te3t. METHODS: Rats received the appropriate vehicle or diclofenac before 1% formaldehyde was injected into the paw. Rats were also pretreated with vehicle, glibenclamide, glipizide, metformin or glibenclamide/metformin and glipizide/metformin combinations before the diclofenac and formaldehyde injections, and the effect on antinociception was assessed. Isobolograms of the combinations were constructed to test for a synergistic interaction. RESULTS: Systemic injection of diclofenac resulted in antinociception during the second phase of the test. Systemic pretreatment with the combinations of glibenclamide (0.56 mg/kg to 10 mg/kg )/metform in (10 mg/kg to ISO mg/kg) and glipizide (0.56 mg/kg to 10 mg/kg)/metformin (10 mg/kg to ISO mg/kg) blocked DIA. The derived theoretical effective doses for 50% of subjects (ED50) for the glibenclamide/metformin and glipizide/ metformin combinations were 32.52 mg/kg and 32.42 mg/kg, respectively, and were significantly higher than the actual observed experimental ED50 values (7.57 mg/kg and 8.43 mg/kg, respectively). CONCLUSION: Pretreatment with glibenclamide, glipizide or met-formin blocked DIA in a do3e-dependent manner, and combining either sulfonylurea with metformin produced even greater effects. The observed ED50S for the combinations were approximately fourfold lower than the calculated additive effects. These data indicate that sulfonylureas interact to produce antagonism of DIA. Combination therapy is a common second- line treatment for patients with diabetes and metabolic syndrome, a group that experiences pain from multiple sources. The results suggest that at least some anti-inflammatory agent3 may not be effective in this group. © 2013 Pulsus Group Inc.
Grados J.,National Major San Marcos University |
Espinoza C.,University of San Agustin |
Ramirez J.J.,University of the Amazon |
Centeno P.,Botanical Research Institute of Texas
Revista Peruana de Biologia | Year: 2013
Seven new Arctiini (Erebidae: Lepidoptera) are reported for Peru. Some of the species are rare among collections. Each new report belongs to different genera and the species given for each genus are those occurring in Peru, according to collections and literature references from their original descriptions. A new synonym is also reported for Agyrtiola niepelti Gaede, 1926. © Los autores.