Gluino decays with heavier scalar superpartners

We compute gluino decay widths in supersymmetric theories with arbitrary flavor and CP violation angles. Our emphasis is on theories with scalar superpartner masses heavier than the gluino such that tree-level two-body decays are not allowed, which is relevant, for example, in split supersymmetry. We compute gluino decay branching fractions in several specific examples and show that it is plausible that the only accessible signal of supersymmetry at the LHC could be four top quarks plus missing energy. We show another example where the only accessible signal for supersymmetry is two gluon jets plus missing energy.Comment: 17 pages, 8 figures. Added references and minor typos and errors corrected (no change in numerical results

Solving Scheduling Problems with Genetic Algorithms using a Priority Encoding Scheme

Scheduling problems are very hard computational tasks with several applications in multitude of domains. In this work we solve a practical problem motivated by a real industry situation, in which we apply a genetic algorithm for finding an acceptable solution in a very short time interval. The main novelty introduced in this work is the use of a priority based chromosome codification that determines the precedence of a task with respect to other ones, permitting to introduce in a very simple way all problem constraints, including setup costs and workforce availability. Results show the suitability of the approach, obtaining real time solutions for tasks with up to 50 products.Universidad de Málaga.Campus de Excelencia Internacional Andalucía Tech

Notes on the combined use of V-VIP and DAB peroxidase substrates for the detection of colocalising antigens

The purpose of the present report was to investigate to what extent the new peroxidase substrate Vector VIP (V-VIP) can be used in combination with DAB chromogen for the unequivocal and permanent detection of colocalising antigens within a single neurone, according to a two-colour paradigm. With this aim, retrograde tract-tracing with cholera toxin B subunit (CTB) or fluoro-gold (FG) was performed to disclose individual, identified subpopulations of neurones in the primate substantia nigra projecting to the caudate nucleus or to the putamen, respectively. Each tracer was detected by means of a PAP procedure and finally stained brown using DAB as a chromogen. Subsequently, both series of sections were processed for the immunocytochemical detection of tyrosine hydroxylase (TH). TH-immunoreactive neurones were stained purple with the peroxidase substrate V-VIP. As a result of the present procedure, several cell bodies of projection neurones, stained brown, can easily be identified within the primate substantia nigra. Some of these neurones additionally displayed purple TH immunoreaction product located in the neuronal dendrites. By contrast, CTB- or FG-unlabelled neurones only show the typical purple precipitate that belongs to V-VIP substrate, both in the cell body as well as in the dendrites

Detection of X-rays from the jet-driving symbiotic star Hen 3-1341

Context. Hen 3-1341 is a symbiotic binary system consisting of a white dwarf and a red giant star that is one of about ten symbiotics that show hints of jets. The bipolar jets have been detected through displaced components of emission lines during its outburst from 1998 to 2004. These components disappeared when Hen 3-1341 reached quiescence. On February 23, 2012, Hen 3-1341 started a new outburst with the emergence of new bipolar jets on March 3, 2012. Aims: We observed Hen 3-1341 during quiescence with XMM-Newton in March 2010 with an effective exposure time of 46.8 ks and with Swift on March 8-11, 2012 as ToO observations with an effective exposure time of 10 ks in order to probe the interaction of the jet with the ambient medium and also the accretion onto the white dwarf. Methods: We fitted the XMM-Newton X-ray spectra with XSPEC and examined the X-ray and UV light curves. Results: We report the detection of X-ray emission during quiescence from Hen 3-1341 with XMM-Newton. The spectrum can be fitted with an absorbed one-temperature plasma or an absorbed blackbody. We did not detect Hen 3-1341 during our short Swift exposure. Neither periodic or aperiodic X-ray nor UV variability were found. Conclusions: Our XMM-Newton data suggest that interaction of the residual jet with the interstellar medium might survive for a long time after outbursts and might be responsible for the observed X-ray emission during quiescence. Additional data are strongly needed to confirm these suggestions.Fil: Stute, M. Eberhard Karls Universität Tübingen. Institute for Astronomy and Astrophysics; Alemania;Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina; Harvard-Smithsonian Center For Astrophysics; Estados Unidos de América;Fil: Pillitteri, I.F.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina; Harvard-Smithsonian Center For Astrophysics; Estados Unidos de América;Fil: Sokoloski, J.L.. Columbia University. Columbia Astrophysics Laboratory; Estados Unidos de América

Gathering and managing complementary diagnostic tests

Personal health information is constituted in its greatest part by complementary diagnostic tests which are an important medical aid. This information is generated dispersedly because the patient seeks medical care in many different places over his lifetime. Access to a comprehensive set of a patient’s health information is a challenge. It revolves around the patient so any managing scheme must be patient-centric. We took a pragmatic approach to this problem and developed a software standalone platform for secure personal health information storage, namely complementary diagnostic tests, on a portable device for mobility. Simplicity and ease of use were main objectives. A special attention was given to the security aspects associated with storing this kind of information

Hidroquímica de la Laguna de Tiscar (Córdoba, España)

La laguna de Tíscar es uno de los seis espacios lagunares que constituyen la Reserva Natural de las Zonas húmedas de la provincia de Córdoba. De los resultados obtenidos en el presente trabajo se deduce la ubicación de dicha laguna sobre depósitos salinos triásicos, siendo la disolución de este sustrato la fuente originaria de los iones presentes en las aguas subterráneas que la alimentan. La aplicación del programa «Geochem» y la de otros métodos analíticos tradicionales, ponen de manifiesto la presencia en este medio lagunar de yeso y halita como especies minerales mayoritarias, no detectándose en ningún caso la presencia de calcita y dolomita

On the stability of the primordial closed string gas

We recast the study of a closed string gas in a toroidal container in the physical situation in which the single string density of states is independent of the volume because energy density is very high. This includes the gas for the well known Brandenberger-Vafa cosmological scenario. We describe the gas in the grandcanonical and microcanonical ensembles. In the microcanonical description, we find a result that clearly confronts the Brandenberger-Vafa calculation to get the specific heat of the system. The important point is that we use the same approach to the problem but a different regularization. By the way, we show that, in the complex temperature formalism, at the Hagedorn singularity, the analytic structure obtained from the so-called F-representation of the free energy coincides with the one computed using the S-representation.Comment: 20 pages and 1 figure. The final version that appeared in JHE

Towards a Circular Economy Development for Household Used Cooking Oil in Guayaquil: Quantification, Characterization, Modeling, and Geographical Mapping

This article belongs to the Special Issue Applications of GIS and Remote Sensing for Sustainable Development[Abstract] The objective of the present study was to quantify, geo-locate, model, and characterize domestic used cooking oil (dUCO) generation for the city of Guayaquil. For this reason, and as a prerequisite for the proper planning of municipal cooking oil waste management in the city, we carried out 14-day fieldwork involving 532 households from different parishes of Guayaquil, combined with a survey to acquire data on their demographic and socioeconomic statistics. The artisanal characterization was further executed to 40 subsamples of dUCO to determine the density, moisture, solids content, and the volatile-matter characteristics present. Additionally, the Geographic Information System (GIS) was used to map the used cooking oil generation hotspots for the city, adding the Geographical Position System (GPS) of each participating household during the data acquisition. Finally, a multiple-regression model was proposed to establish correlations between the dUCO generated and five independent variables, such as household size, socioeconomic group, tenure status, education level, and income. Results showed that the per capita daily dUCO-generation rate was found to be 4.30 g/day/c or 4.99 mL/day/c, with a density of 0.86 g/mL. Filterable solids represented 0.37% for the entire dUCO collected sample, while separable water and grease represented 1.58% and 0.014%, respectively. In addition, the percentage of the volatile matter was found to be 7.7% ± 2.1% of the filtered dUCO. Using GIS mapping, we found that the areas near tourism sites have a higher dUCO generation value, considering the household survey. Following the developed multiple-regression model developed, it was found that household size and the socioeconomic group have the maximum effect on generating used cooking oil

Deep-water sponge fauna from the mud volcanoes of the Gulf of Cadiz (North Atlantic, Spain)

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