400 research outputs found

    The climactic conditions limit fruit production and quality in gulupa (Passiflora edulis Sims f. edulis) under integrated fertilization

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    The gulupa (Passiflora edulis Sims f. edulis) is one of the main fruit trees that are part of Colombia's export supply. The objective of this research was to determine the effect of chemical fertilizers alone (control) or together with integrated fertilization (humic acids or vermicompost; two separate treatments), on the yield and quality of gulupa fruit during two consecutive production cycles in the Colombian Amazon foothills. The climatic conditions were monitored and the phenological state of the plant was related to the average temperature, relative humidity, precipitation, solar radiation, and vapor pressure deficit. The integrated fertilization with vermicompost offered better values in productive parameters (fresh weight, number of fruits and equatorial diameter) irrespective of the cycle considered, but the fruit quality attributes were similar irrespective of the fertilization treatment tested. The fluctuations of the climatic variables of precipitation, relative humidity and solar radiation in both cycles (the second rainiest and affected by the ENSO phenomenon) reduced the quality of the fruit (whole fruit firmness by 19%, dry matter and pulp total titratable acidity by 24%, total soluble solids by 8%, individual sugars by 49%, organic acids by 63% and antioxidant capacity by 67%) as well as the productive parameters during the second cycle. These results demonstrate the high degree of influence exerted by the climate on productive and fruit quality attributes that are decisive in the production and marketing of the fruit.This research was supported by the Colombian Ministry of Science through the Bicentennial Doctoral Excellence Scholarship Program to F.M. Authors thank the technical staff of the Universidad Surcolombiana and the Universidad Nacional de Colombia who contributed to the development of this research. This work belongs to the doctoral thesis of F.M. supervised by Dr. M.S.H.G. and Dr. N.G.G. and is part of the collaboration agreement between the Sinchi Institute and the UPCT

    Using of Hydroponic solution on the irrigation water of barley hidroponic sprouts (Hordeum vulgare)

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    El presente trabajo de investigación se realizó en el centro poblado Nuevo Mocse de Lambayeque del 16 al 31 de Diciembre de 2014 y tuvo como objetivos determinar la mejor dosis de solución nutritiva de macronutrientes A y micronutrientes B en el agua de riego de germinado hidropónico de cebada; b) Determinar el valor nutricional del germinado hidropónico de cebada regada con diferentes dosis de solución nutritiva de macronutrientes A y micronutrientes B y c) Determinar el rendimiento del Germinado Hidropónico de cebada (Hordeum vulgare L.) regada con diferentes dosis de solución nutritiva de macronutrientes A y micronutrientes B. Para lograrlos se implementaron 6 tratamientos con 6 repeticiones cada uno: T0 : GH de cebada sin solución nutritiva en el agua de riego; T1: 1.00 ml de solución nutritiva A y 0.50 ml de solución nutritiva B en agua de riego ; T2: 0.50 ml de solución nutritiva A y 0.125 ml de solución nutritiva B en agua de riego; T3: 0.75 ml de solución nutritiva A y 0.25 ml de solución nutritiva B en agua de riego; T4: 1.25 ml de solución nutritiva A y 0.75 ml de solución nutritiva B en agua de riego; T5: 1.50 ml de solución nutritiva A y 1.00 ml de solución nutritiva B en agua de riego. Los resultados demostraron la existencia de diferencias estadísticas significativas entre tratamientos obteniendo los mejores resultados con T3 utilizando 0.75 ml de solución A y 0.25 ml de solución B diluidos en 4 litros de agua de riego suministrados desde el día 4 hasta el día 8 post siembra en bandejas.This research was conducted in the town of New Mocce at Lambayeque from 16 to 31 December 2014. The objective was to: a) determine the best dose of nutrient solution of macronutrients (A) and micro-nutrients ( B) in hydroponic irrigation water germinated barley; b) Determine the nutritional value of barley sprouts watered with different doses of A and B; c) Determine the performance of germinated barley (Hordeum vulgare) watered with different doses of A and B. To achieve it 6 treatments with 6 replicates each were implemented: T0, germinated barley without hydroponic nutrient solution in irrigation water; T1, 1 ml of A and 0.5 ml of B in water for irrigation; T2, 0.5 ml of A and 0.125 ml of B in water for irrigation; T3, 0.75 ml of A and 0.25 ml of B in water for irrigation; T4, 1.25 ml of A and 0.75 ml B in water for irrigation; T5, 1.50 ml of A and 1 ml B in water for irrigation. The results showed statistically significant differences between treatments; the best results with T3, using 0.75 ml of A and 0.25 ml of B diluted in 4 liters of irrigation water supplied from 4 to 8 days post-seeding tray

    Functional statistical techniques applies to vine leaf water content

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    P. 1116-1122A statistical analysis of functional data, obtained as reflectance values measured using a hyperspectral sensor, was used to determine water content in vine leaves. Our study was conducted using a sample of 80 vine leaves whose water content was determined by calculating the weight difference between leaves before and after drying in an oven.S

    Cell-cycle arrest biomarkers in urine to predict acute kidney injury in septic and non-septic critically ill patients

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    Purpose: To analyse the usefulness of the composite index of the tissue inhibitor of metalloproteinases-2 (TIMP-2) and insulin-like growth factor-binding protein 7 (IGFBP7) as urinary biomarkers for the early prediction of AKI in septic and non-septic patients. Methods: This is a prospective, observational study including patients admitted to ICU from acute care departments and hospital length of stay 0.8 predicted a rate of AKI of 71% and AKIN >= 2 of 62.9%. Conclusions: In our study, urinary [TIMP-2].[IGFBP7] was an early predictor of AKI in ICU patients regardless of sepsis. Besides, index values < 0.8(ng/mL)(2)/1000 ruled out the need for renal replacement

    Nontrivial eigenvalues of the Liouvillian of an open quantum system

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    We present methods of finding complex eigenvalues of the Liouvillian of an open quantum system. The goal is to find eigenvalues that cannot be predicted from the eigenvalues of the corresponding Hamiltonian. Our model is a T-type quantum dot with an infinitely long lead. We suggest the existence of the non-trivial eigenvalues of the Liouvillian in two ways: one way is to show that the original problem reduces to the problem of a two-particle Hamiltonian with a two-body interaction and the other way is to show that diagram expansion of the Green's function has correlation between the bra state and the ket state. We also introduce the integral equations equivalent to the original eigenvalue problem.Comment: 5 pages, 2 figures, proceeding

    Retrospective epidemiological analysis of Canine Distemper in Pachuca of Soto city, Hidalgo State

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    Canine distemper virus (CDV) is the causative agent of one of the most spread, highly contagious and lethal viral disease in canines, whose morbidity varies between 25-75% and mortality between 50-90%. The present study aimed to carry out an epidemiological study of CDV from a Veterinary Hospital in the city of Pachuca of Soto, State of Hidalgo. The information was obtained from 7280 medical records of canine patients treated during the 2017-2018 period, of which 65 met the positive case criteria for the CDV. An observational, cross-sectional epidemiological study with a retrospective search of cases was carried out. It was determined that 8 out of every 1000 patients attending the clinic were positive for CDV, observing that a higher frequency of males with 63%, with Relative Risk (RR) of 0.67 and an Odds Ratio (OR) of 0.47, patients under 6 months have the highest frequency of cases with 62% (RR of 8.0 and OR of 19.2); Despite the variability of the breeds within the analysis performed, the highest frequency was found in mongrel dogs with 52% (RR of 1.79 and OR of 2.66), on the other hand, it was determined that seasonality influences the degree of presentation of this disease, being greater in winter with 45% of cases (RR 1.81 and OR 2.47). In conclusion, in the Veterinary Hospitalunderstudy, the CDV affects male Creole dogs less than seven months of age unvaccinated more and the disease occurs most frequently in winter.El virus del distemper canino (VDC) ha sido el causante de la enfermedad vírica multisistémica más difundida, altamente contagiosa y letal de los cánidos, cuya morbilidad varía entre 25-75% y la mortalidad entre 50-90%. El objetivo de la presente investigación fue realizar un estudio epidemiológico de distemper canino de un Hospital Veterinario en la ciudad de Pachuca de Soto, Estado de Hidalgo. Se obtuvo información de 7280 historias clínicas de pacientes caninos atendidos durante el período 2017-2018, de las cuales 65 cumplieron con los criterios de caso positivo al VDC. Se reali-zó un estudio epidemiológico observacional, de tipo trasversal y con una búsqueda retrospectiva de casos. Se determinó que 8 de cada 1000 pacientes que asisten a la clínica fueron positivos al VDC, observándose que una mayor frecuencia de machos con un 63%, con Riesgo Relativo (RR) de 0.67 y una Odds Ration (OR) de 0.47, los pacientes menores de 6 meses tienen la mayor frecuenta de casos con un 62% (RR de 8.0 y OR de 19.2); Pese a la variabilidad de las razas dentro del análisis efectuado, se encontró la mayor frecuencia en los perros mestizos con un 52% ( RR de 1.79 y OR de 2.66), por otra parte, se determinó que la estacionalidad influye en el grado de presentación de esta enfermedad, siendo mayor en invierno con un 45% de los casos (RR 1.81 y OR 2.47). En conclusión en el Hospital Veterinario en estudio el VDC afecta más a los caninos criollos machos menores de siete meses de edad no vacunados y la enfermedad se presenta con mayor frecuencia en invierno
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