JOURNAL BIODIVERSITY RESEARCH AND DEVELOPMENT

Antioxidant activity and total phenolic content of extracts of Ocimum campechianum variety white and purple

2020-02-13T13:46:14+00:00

Objective: To evaluate the antioxidant activity and total phenolic compounds of some plants used for food in the department of Chocó. Materials and methods: The antioxidant activities was conducted through the fading test of radical 2.2-diphenyl-1-picrilhidracilo DPPH, and the total phenolic content by Folin-Ciocalteu method. Results: CI50 value was determined for the ethanol extracts prepared from O. campechianum var. White Residence meal 13.03 and 24.38 mg/ml, respectively. In addition to aqueous extracts reported values of 54.0 and 55.42 mg/ml. Conclusions: The antioxidant activity of these extracts little influenced by the total content of phenolic compounds. Similarly, as effects antioxidant evidenced by these food plants use what functionality does not rule in the treatment of some diseases associated with oxidative stress.

Handling in living of Hymenaea courbaril L. (Fabaceae) in the Municipality of Unión Panamericana, Chocó, Colombia

2020-02-13T13:46:14+00:00

Objetive: To evaluate the germination of seeds, initial growth and survival of seedlings of Hymenaea courbaril L. Un- der different pre-germinative treatments and combinations of organic substrates. Materials y methods: A completely randomized experimental design was employed, consisting of 16 treatments and three replicates that resulted from the combination of three pre-germinative, one control and four organic substrates. A total of 156 seeds were sown at a depth of 2 cm. Results: We detected statistically significant difference between pre-germinative treatments used, however, when evaluating the combinations between pre-germinative and organic substrates (treatments) No differences were evident. A general mean of germination of 34% (p=0.1566) was obtained. The seedlings of H. Courbaril experienced average growth values of 27 cm (p=0.2291). The best records of growth in height and survival of the seedlings were recorded in the treatments AG (without pre-germination with soil black earth of ant 2:1), AE (without pre-germinative with alluvial sand) and DE (mechanical scarification with sand with values of 31 (p=0.2630), 30.2 (p=0.2562) and 30 cm. Conclusions: In nursery H. Courbaril must be propagated and managed using the combination DE (mechanical scarification with alluvial sand), this because under this treatment the best values of germination, growth and survival are recorded.

Remarks on the distribution of the two-toed sloth Choloepus hoffmanni (Pilosa: Megalonychidae) for the department of Quindío, in the lists of mammals of Colombia

2020-02-13T13:46:14+00:00

Objective: Verify the occurrence of the two-toed sloth C. hoffmanni in the Colombian department of Quindío, and review its distribution in Colombia. Materials y methods: It is performed an exhaustive review of the literature on this species, in particular on an analysis of the official lists of mammals of Colombia, and the revision of museological specimens recently added to mammal collection of the Universidad del Quindío. Results: It is confirmed scientifically the occurrence of C. hoffmanni in the Colombian department of Quindío. These museological additions correspond to specimens recovered in the towns of Circasia and Armenia. Conclusions: It is emphasized the importance of museological specimens validating the presence of species to be included in regionals and country level official lists.

Analysis of the extreme indices of precipitation in Colombia and its relationship with the ENSO phenomenon

2020-02-13T13:46:14+00:00

Objective: The main purpose of this study was to understand seasonal variations in the intensity, frequency and du- ration of extreme precipitation events in Colombia (Case study in Chocó department), during the period 1982-2015, based on a set of 6 selected precipitation indices calculated from stations’ daily dat, for the June-July-August . Materials and Methods: The analysis of extreme events in Colombia was carried out, using extreme precipitation indexes, calculated from the data set of the World Precipitation Climatology Center.Trend analysis of the indices was carried out using Mann-Kendall nonparametric test, and Sen’s slope estimator was used for calculating the magnitude of trend. Results: The spatial patterns in all the extreme precipitation indices indicated mixed trends on the Pacific region and the Piedemonte Llanero. The wet indices show a non-homogeneous positive trend, but the dry indices show a general negative trend in Colombia. Teleconnection patterns associated with the Pacific Ocean have a negative impact on the wet indices, but a positive one the maximum number of consecutive dry days. In the department of Chocó, positive tendencies of the consecutive dry days were found in municipalities such as: Acandí, Juradó, Litoral del San Juan and Sipí, and negative tendencies in the municipality of the centre of the department, for example Quibdó and Istmina. Conclusions: The teleconnection patterns of the Pacific Ocean have caused droughts, while on the Atlantic Sea, the rainfall indices have suggested wetter conditions during the last four decades and an increasing number of heavy rainfall events. In the department of Chocó, the municipalities on the Pacific coast and in the North have a tendency to increase extreme drought events, but the municipalities in the centre of the department have positive trends in the wetter conditions associated with extreme rainfall events.

Business intelligence solution to support the process of quality accreditation and decision taking at the Chocó Technological University, Quibdó, Colombia

2020-02-13T13:46:15+00:00

Objective: To develop a Business Intelligence solution to support the quality accreditation process of the Technological University of Chocó. Materials and methods: Ralph Kimball’s Business Intelligence methodology is used, which allows the development of solutions in scenarios with low computational resources. Results: An inventory of 209 requirements was obtained that the Colombian universities need for quality accreditation processes and later implemented through a Business Intelligence Solution in Microsoft Visual 2015. Conclusions: The decision- taking and quality accreditation processes of the Chocó University and another Colombian universities can be substantially improved through the imple- mentation of Business Intelligence solutions, which group and analyze in a single site all academic and administrative information and from their different Information Systems.

The experience of a Cuba-Spain scientific cooperation based on mathematics education: Building an effective model

2020-02-13T13:52:52+00:00

In the present article, we go through the key aspects of the cooperation experience between the Interdisciplinary Modeling Group – InterTech of the Universitat Politècnica de València (UPV), Spain and the University of Pinar del Río (UPR), Cuba in order to make some remarks on developing an effective model for cooperation with universities in developing countries; which may give rise shortly to a fruitful scientific collaboration stage focused on local educational development. We considered in our cooperation actions important issues faced by universities in developing countries and propose solutions to mitigate them. For instance, we discuss about how to prevent migration of young scientists and about a possible win-win relationship between universities from developed and developing countries. Our cooperation interventions are in line with the national and international efforts to help Cuban universities connect with the international scenario. Cuba was always pointed out by its noticeable achievements in education and healthduring the 70 ́s and 80 ́s, only that ,only that its general infrastructure was very affected by the economical crisis of the 90 ́s and other issues derived from it. Some of these issues are discussed in this article based on our own assessment and analysis of the local context. At present, after over 20 years of collaboration, our research group has developed a wide spectrum of academic, research and cultural activities in the UPR and throughout the province of Pinar del Río.