DECRETO 4051 DIAN PDF

LOCALIZACION Ubicada en la costa Atlántica frente a la ciudad de Barranquilla, en la ribera oriental del Río Magdalena, en el Corregimiento. Ley No de 27 de octubre de , Decreto de Gabinete No. de 7 de mayo DIA SHIPPING INVESTMENT S A. Title: Gaceta ser pag, Author: El Dia, Name: Gaceta ser pag, Length: 95 Ley Nº , de 2 de agosto de , artículo 13 del Decreto Supremo ,

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Coastal lagoons are ecosystems highly vulnerable to human impacts because of their situation between terrestrial and marine environment. Mar Menor coastal lagoon is one of the largest lagoons of the Mediterranean Sea, placed in SE Spain and subjected to major human impacts, in particular the mining of metal sulphides.

As a consequence, metal concentration in water column and sediments of this ecosystem is usually higher than in other areas. For monitoring ecosystem health, the present study has assessed the ability of Cotylorhiza tuberculata for bioaccumulating metals from sea water. Up to 65 individuals were sampled at 8 different sampling stations during the summer of Although the concentration values for different elements considered were moderate Pb: In any case, the use or disposal of these organisms should consider their metal content because of their potential environmental and health implications.

The major source of pharmaceuticals running into this watercourse was an effluent from the Los Alcazares WWTP, although other sources were also present runoffs, excess water from irrigation, etc.

In this urban and agriculturally influenced watercourse different pharmaceutical distribution profiles were detected according to their attenuation, decreti depended on physicochemical water conditions, pollutant input variation, biodegradation and photodegradation rates of pollutants, etc. Attenuation was lower, however, for diclofenac, carbamazepine, lorazepam, valsartan, sulfamethoxazole among others, due to their known lower degradability and sorption onto particulate matter, according to previous studies.

The maximum concentrations detected were higher than ng L -1 for azithromycin, clarithromycin, valsartan, acetaminophen and ibuprofen. These high concentration levels were favored by the limited dilution in this low flow system, and consequently some of them could pose an acute risk to the biota of this watercourse. Considering data from toit has been estimated that a total of UMA network could be easily integrated into the existing cellular networks without influencing mobile core network, and could provides high-quality mobile services with preferentially priced indoor voice and data usage.

This helps to improve subscriber’s experience. This offers the traditional mobile operators an opportunity to integrate WiMax technique into cellular network. In the end of this article, we also give an analysis of potential influence on the cellular core networks ,which is pulled by UMA network. A participatory approach for selecting dedreto measures in the WFD context: Achieving a good ecological status in water bodies by is one of the objectives established in the European Water Framework Directive.

Cost-effective analysis CEA has been applied for selecting measures to achieve this goal, but this appraisal technique requires technical and economic information that is not always available.

In addition, there are often local insights that can only be identified by engaging multiple stakeholders in a participatory process. This paper proposes to combine CEA with the active involvement of stakeholders for selecting cost-effective measures. This approach has been applied to the case study of one of the main coastal lagoons in the European Mediterranean Sea, the Mar Menorwhich presents eutrophication problems.

Firstly, xian interviews were conducted to estimate relative effectiveness and relative impacts of a set of measures by means of the pairwise comparison technique. Secondly, relative effectiveness was used to estimate cost-effectiveness ratios.

The most cost-effective measures were the restoration of watercourses that drain into the lagoon and the treatment of polluted groundwater. Although in general the stakeholders approved the former, most of them stated that the latter involved some uncertainties, which must be addressed before implementing it. Stakeholders pointed out that the PoM would have a positive impact not only on water quality, but also on fishing, agriculture and 40051 in the area.

This approach can be useful to evaluate other programmes, plans or projects related to other European environmental strategies. Orbital period variations of two W UMa -type binaries: Due vian their contact configurations, the secular period increases are interpreted as a result of mass transfer from the less massive component to the more massive one.

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Proceedings of the 4th IPLeiria’s International Health Congress

The cyclic period variation of UY UMa may be interpreted in terms of either the magnetic activity or the light time effect. Occurrence and seasonal distribution of polycyclic aromatic hydrocarbons and legacy and current-use pesticides in air from a Mediterranean coastal lagoon Mar MenorSE Spain.

The occurrence and seasonal distribution of polycyclic aromatic hydrocarbons PAHs and legacy and current-use pesticides CUPs in air were characterized around the Mar Menor lagoon using both active and passive sampling devices.

The seasonal defreto of these pollutants was determined at 6 points using passive samplers. Passive sampler sampling rates were estimated for all detected analytes using an active sampler, considering preferentially winter data, due to probable losses in active sampling during summer high temperatures and solar irradiation. The presence of 28 compounds 14 CUPs, 11 PAHs and 3 organochlorinated pesticides were detected in air by polyurethane passive sampling.

The distribution of contaminants was spatially and seasonally heterogeneous. The highest concentrations of PAHs were found close to the airport, while the highest concentrations of pesticides were found in the influence area of agricultural fields western stations. PAH and herbicide concentrations were higher in winter than in the other seasons, although some insecticides such as chlorpyrifos were more abundant in autumn. The presence of PAHs and legacy and current-use pesticides in air confirmed their transference potential to marine coastal areas such as the Mar Menor lagoon.

Fundamental parameters of BE UMa revised. We have determined a complete set of parameters for the young pre-cataclysmic variable BE UMa from a comprehensive photometric and spectroscopic analysis using model atmospheres. Our precise photometry and spectroscopy were acquired with the 6-m telescope and Zeiss telescope of the Special Astrophysical Observatory and the 1.

We performed a detailed identification of emission lines of ten elements. We have studied the radial-velocity curves of the cool star using lines of various elements. All the curves exhibit the previously predicted distortions due to reflection effects in the close binary. We analyzed the light curves using model atmospheres for irradiated stars; all the parameters of BE UMa were refined.

The abundances of helium and several light elements C, N, O, Ne, Mg in the atmosphere of the cool star are probably higher than the solar values. We conclude that the physical characteristics of the primary are in good agreement with evolutionary tracks for planetary-nebula nuclei, and that the secondary is overluminous by a factor of 30 compared to main-sequence stars of the same mass.

Um total de 5. We present the results of analysing of the light curve and O-C variations in the eclipsing system BM UMabased on V-band observations which cover the period from JD to using two robotic remotely-controlled telescopes of Tzec Maun Observatory USA along with observations made with the RK telescope of Odessa Astronomical Observatory.

The full light curve displays a total primary eclipse with a duration 0. The depths of primary diqn secondary minima are nearly equal, 0. The physical parameters of the system were calculated using the Wilson-Devinney code, appended with the Monte Carlo search algorithm. The result establishes BM UMa as a contact system fillout factor The more massive component is larger and cooler.

The 72 archival and 11 newly-obtained times of light minimum cover the interval and allowed us to exclude possible systematic period variations in BM UMa and to determine an initial epoch of HJD Recent developments on SU UMa stars – theory vs.

Kepler light curves of short period dwarf novae have resparked interest in the nature of superoutbursts and led to dizn question: Is the thermal-tidal instability needed, or can the plain vanilla version of the accretion disk limit cycle do the job all by itself? A detailed time-resolved study of an eclipsing SU UMa system during superoutburst onset should settle the question – decretto there is a dramatic contraction of the disk at superoutburst onset, Osaki’s thermal-tidal model would be preferred; if not, the plain disk instability model would be sufficient.

Finally, it may be necessaryto look beyond the short period dwarf novae to gain perspective on the nature diam embedded precursors in long outbursts. We report results of an extensive worldwide observing campaign devoted to a very active dwarf nova star – IX Draconis.

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We investigated photometric behaviour of the system to derive its basic outburst properties and understand peculiarities of IX Draconis as dixn as other active cataclysmic variables, in particular dwarf novae of the ER UMa type. In order to measure fundamental parameters of the system, we carried out analyses of the light curve, O – C diagram, and power spectra.

During over two duan of observations, we detected two superoutbursts and several normal outbursts. The V magnitude of the star varied in the range Superoutbursts occur regularly with the supercycle length Psc decdeto Normal outbursts appear to be irregular, with typical occurrence times in the range 3.

We detected a double-peaked structure of superhumps during superoutburst, with the secondary maximum becoming dominant near the end of the superoutburst. Based on the power spectrum analysis, the evaluation of the orbital period was problematic. We found two possible values: The evolutionary status of the object depends dramatically on the choice between these two values.

A spectroscopic determination of the orbital period is needed. We updated available information on ER UMa -type stars and present a new set of their basic statistics. Thereby, we provide evidence that this class of stars is not uniform. Sequential ultrasound-microwave assisted acid extraction UMAE of pectin from pomelo peels. This study aims to optimize sequential ultrasound-microwave assisted extraction UMAE on pomelo peel using citric acid.

The effects of pH, sonication time, microwave power and irradiation time on the yield and the degree of esterification DE of pectin were investigated. Under optimized conditions of pH 1.

The pectin’s galacturonic acid content obtained from combined extraction technique is higher than that obtained from sole extraction technique and the pectin gel produced from various techniques exhibited a pseudoplastic behaviour. This has substantiated the highest pectin yield of This was a project to study the disk and wind of the eclipsing nova-like variable UX UMain order to better define the wind geometry of the system, including the nature eecreto the transition region between the disk photosphere and the supersonic wind.

We proposed to use phase resolved spectroscopy of the system, taking advantage of the fact that UX UMa is an eclipsing system, eecreto isolate dizn regions of the wind and to use a Monte Carlo radiative transfer code to simulate the spectra through the eclipse.

Dedreto present the results of our investigation of the decreeto and physical parameters of the binary system LX Leo. According to our solution, the system is a high mass-ratio, totally eclipsing, W-type W UMa system. In addition, the evolutionary condition of the system is discussed. We present observational evidence that supercycle lengths of the most active SU UMa -type stars are increasing during the past decades.

We analyzed a large number of photometric measurements from available archives and found that this effect is generic for this class of stars, independently of their evolutionary devreto.

This finding is in agreement with previous predictions and the most recent work of Patterson et al. This new vent is one of two ongoing eruptions on the volcano. Chromospheric activity on late-type star DM UMa using high-resolution spectroscopic observations. We analysed these chromospheric active indicators by employing the spectral subtraction technique.

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These phenomena might be explained by flare events or rotational modulations of the level of chromospheric activity. Sonification is the conversion of quantitative data into sound. In this work we explain the methods used in the sonification of light curves provided by the Kepler instrument from Q2 through Q6 for the cataclysmic variable systems V Lyr and V Cyg.

Both systems are SU UMa stars showing dwarf nova outbursts and superoutbursts as well as positive and negative superhumps. Focused sonifications were done from average pulse shapes of each superhump, and separate sonifications of the full, residual light curves were done for both stars.