Uso de hábitat por carnívoros en un sistema de ganadería extensiva silvopastoril (Córdoba, Colombia)

Biólogo (a)Pregrad

Inventario preliminar de mamíferos de las Reservas privadas Námaku y el Jardín de Las Delicias, estribaciones de la Sierra Nevada de Santa Marta, Colombia

The present study was carried out in two private reserves located in the department of Magdalena, in the eastern foothills of the Sierra Nevada de Santa Marta. The Námaku reserve (63 ha), located in the Minca district, Las Casitas village, is between 800 and 1100 meters above sea level and is characterized by presenting secondary Tropical Humid Forest with more than 20 years of recovery.El presente estudio se llevó a cabo en dos reservas privadas ubicadas en el departamento del Magdalena, en las estribaciones orientales de la Sierra Nevada de Santa Marta. La reserva Námaku (63 ha), situada en el corregimiento de Minca, vereda las Casitas, se encuentra entre los 800 y 1100 msnm y se caracteriza por presentar Bosque Húmedo Tropical secundario con más de 20 años de recuperación

Primer registro confirmado de Oso Andino (Tremarctos ornatus: Ursidae) en la Serranía de San Lucas, Bolívar, Colombia.

In July 2011, in a biological expedition carried out by members of ProCAT Colombia, the video record of the presence of Andean Bear was obtained in the village of Villa Flor, rural area of the municipality of Santa Rosa del Sur (Bolívar), at an elevation 1043 meters above sea level (07 ° 56''26.8 '' N; 74 ° 13''41.5 W).En julio del 2011, en una expedición biológica realizada por miembros de ProCAT Colombia se obtuvo el registro en video de la presencia de Oso Andino en el corregimiento de Villa Flor, zona rural del municipio de Santa Rosa del Sur (Bolívar), a una elevación de 1043 msnm (07°56''26,8'' N; 74°13''41,5 W)

Response of the transcription factor BABY BOOM of Arabidopsis thaliana L. in the formation of embryogenic calluses of cocoa leaves (Theobroma cacao L.)

Cocoa (Theobroma cacao L.) is one of the most important economic crops worldwide. The propagation of elite varieties of cocoa has been achieved through somatic embryogenesis, but still one of the main limitations is the low rates of embryo formation, which is a genotype-dependent trait. Manipulation of transcription factors (TFs) such as BABY BOOM (BBM) promotes the transition of cocoa somatic cells from the vegetative to the embryonic state. This work validated the use of clonal cocoa leaves cv. IMC-67 to induce somatic embryogenesis, overcoming their recalcitrant limitation with the help of the introduction of TF-BBM from Arabidopsis thaliana (AtBBM). The vectors were constructed by the Gateway system using the donor vector pENTR/D-TOPO and the expression vector pk7WG2. The overexpression vector pk7WG2:AtBBM was obtained, allowing successful transformation into Agrobacterium tumefaciens GV3101. The AtBBM gene was characterized (1755 base pairs), and its expression was observed in the formation of embryogenic calluses in cocoa leaves. Overexpression of AtBBM allowed the obtainment of a 92% response in the formation of embryogenic callus in cocoa leaves with Agrobacterium-mediated vacuum infiltration and overexpression of the pk7WG2:AtBBM vector. This high transformation efficiency reached with the insertion of the overexpression vector provides validation of transient response of the TF AtBBM in the formation of embryogenic calluses in cocoa leaves of the IMC-67 clone. Through this methodology, it is possible to continue with studies of gene overexpression, insertion, silencing, and gene editing in Peruvian cocoa

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

Measurement of b jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe

Measurement of B-c(2S)(+) and B-c*(2S)(+) cross section ratios in proton-proton collisions at root s=13 TeV

Peer reviewe