Hernandez-Martinez M.,Escuela Nacional de Ciencias Biologicas IPN |
Gallardo-Velazquez T.,Escuela Nacional de Ciencias Biologicas IPN |
Osorio-Revilla G.,Escuela Nacional de Ciencias Biologicas IPN |
Almaraz-Abarca N.,Centro Interdisciplinario Of Investigacion Para El |
And 2 more authors.
LWT - Food Science and Technology | Year: 2013
Fourier transform mid-infrared (MID-FTIR) spectroscopy coupled with partial least square algorithm (PLS-1) was used to predict total fat, fatty acid composition, and nutritional parameters as content of omega-3/100 g of fish, and fish lipid quality index (FLQ index) of Atlantic bluefin tuna, crevalle jack, and Atlantic Spanish mackerel chilled fillets. Chemometric model was developed with 84 samples from the 3 fish species at different season capture and varying the storage times. The performance of the regression model was evaluated according to coefficients of determination (R2), residual predictive deviation of cross-validation (RPDcv), and percentage relative difference (% RD). Chemometric model provided good reliability in the prediction of total fat (R2 = 0.968, RPDcv = 4.76), fatty acids (R2 between 0.893 and 0.996, RPDcv between 2.35 and 7.68), FLQ index (R2 = 0.997, RPDcv = 8.52), and content of omega-3/100 g of fish (R2 = 0.968, RPDcv = 3.74). The results demonstrated that chemometric model could be applied simultaneously to chilled fillets of these three species. © 2013 Elsevier Ltd.
Abundance and distribution of Aedes aegypti (Diptera: Culicidae), and dengue dispersion in Guasave Sinaloa, México [Abundancia y distribución de Aedes aegypti (Diptera: Culicidae) y dispersión del dengue en guasave sinaloa, méxico]
Garcia C.,Centro Interdisciplinario Of Investigacion Para El |
Garcia L.,Centro Interdisciplinario Of Investigacion Para El |
Espinosa-Carreon L.,Centro Interdisciplinario Of Investigacion Para El |
Cesar L.,Zoonosis Delegacion Sanitari
Revista de Biologia Tropical | Year: 2011
Dengue is an important disease that affects humans, and is transmitted by A. aegypti. During 2006, a total of 477 cases of hemorrhagic dengue, and 1 510 of classic dengue were recorded in Sinaloa. Due to this high impact, a study on insect abundance and distribution, as well as their relationship with dengue dispersion, was carried out from April 2008 to March 2009 in Guasave, Sinaloa. The study included a total of six sectors in the city, considering 16 colonies; besides, 96 traps were distributed in these sectors to monitor the vector population density and female number per trap. The adult density index (ADI) and traps positive index (TPI) were calculated, and data were used to obtain the monthly dengue dispersion maps. The highest abundance of female (137 and 139) was found in July and August. In August and September the sectors 2, 4 and 6 showed the highest ADI values 2.44, 3.35 and 2.290, while TPI values were 56.25, 58.82 and 61.54, with the highest epidemiology dengue dispersion. The Pearson correlation (p<0.05) showed better values with the precipitation (r=0.80) than mean temperature (r=0.76) with zero lag months; while the cases of classic dengue and hemorrhagic dengue (CD/HD) is mostly related with the precipitation (r=0.98), and minimum temperature (r=0.79), with two lag months. In conclusion, the ADI and TPI index, as well as the maps obtained, allowed us to know the location of epidemiologic dengue risk areas. This information can be used to develop better control measures biological and chemical for the mosquito, in this location.
Sosa-Hernandez D.B.,Centro Interdisciplinario Of Investigacion Para El |
Vigueras-Cortes J.M.,Centro Interdisciplinario Of Investigacion Para El |
Garzon-Zuniga M.A.,Centro Interdisciplinario Of Investigacion Para El
Water Science and Technology | Year: 2016
The biofiltration system over organic bed (BFOB) uses organic filter material (OFM) to treat municipal wastewater (MWW). This study evaluated the performance of a BFOB system employing mesquite wood chips (Prosopis) as OFM. It also evaluated the effect of hydraulic loading rates (HLRs) in order to achieve the operational parameters required to remove organic matter, suspended material, and pathogens, thus meeting Mexican and US regulations for reuse in irrigation. Two biofilters (BFs) connected in series were installed; the first one aerated (0.62 m3air m-2h-1) and the second one unaerated. The source of MWWwas a treatment plant located in Durango, Mexico. For 200 days, three HLRs (0.54, 1.07, and 1.34 m3m-2d-1) were tested. The maximum HLR at which the system showed a high removal efficiency of pollutants and met regulatory standards for reuse in irrigation was 1.07 m3m-2d-1, achieving removal efficiencies of biochemical oxygen demand (BOD5) 92%, chemical oxygen demand (COD) 78%, total suspended solids (TSS) 95%, and four log units of fecal coliforms. Electrical conductivity in the effluent ensures that it would not cause soil salinity. Therefore, mesquite wood chips can be considered an innovative material suitable as OFM for BFs treating wastewaters. © IWA Publishing 2016.
Silva J.T.,Centro Interdisciplinario Of Investigacion Para El |
Ochoa S.,Centro Interdisciplinario Of Investigacion Para El |
Estrada F.,Centro Interdisciplinario Of Investigacion Para El |
Villalpando F.,Centro Interdisciplinario Of Investigacion Para El |
Cruz G.,Colegio de Mexico
Tecnologia y Ciencias del Agua | Year: 2011
A method based on sustainability criteria for the assessment of banning indexes (a methodfor restricting new water resources exploitation) is described as a strategy to manage and operate aquifers. The data was organized in a geographic information system (GIS) and the processing of the data involved map algebra. The variables considered were: well density, extraction volume, chemical quality of the water, chemical quality ofthe soil, piezometric abatement and subsidence. The study surface was 2 × 2 km wide. The obtained values oscillated between 6 and 20 points. According to that established by the Ley de Aguas Nacionales (National Waters Law), three banning levels are proposed: rigid, flexible and controlled. The map obtained ofthe banning indexes for the Chapala Cienaga shows that approximately 30% of the area is located in flexible banning levels, which indicates that there are no justifiable conditions to impose total restrictions on the authorization ofnew exploitation.