Influencia del Dogma 95 en las narraciones del cine argentino

La producción cinematográfica argentina no fue ajena a la profunda crisis económica que afectó al país hacia fines de los años 90. Sin embargo no se dejaron de hacer películas, la incorporación de la tecnología digital al sistema de producción significó una alternativa ya que posibilitaba reducir costos. En este proceso, tuvo un papel decisivo la difusión del trabajo de los realizadores daneses enarbolados tras el Dogma 95. El artículo da cuenta de estas transformaciones, haciendo especial referencia a los postulados del Dogma y su influencia en la estética y narrativa del cine argentino de entonces.Argentine film output was not immune to the profound economic crisis that impacted on the country in the 90s. Films did not stop being made, however, and the incorporation of digital technology to the production system was an alternative that enabled costs to be kept down. This process benefitted significantly from the spread of the work of Danish directors adhering to the Dogme 95 manifesto. This article reports on those transformations, with special reference to Dogme rules and its influence on the aesthetics and narrative of Argentine cinema of the period

Estrategias diagnosticas para la hipertensión sistémica en gatos domésticos (Felis catus)

La presión arterial (PA) es la fuerza ejercida por la sangre sobre cualquier área de la pared vascular y desde un punto hemodinámico como el producto del volumen sanguíneo contenido en el sistema arterial por la resistencia vascular, es vital ya que es necesaria para aportar oxígeno y nutrientes a los órganos del cuerpo, en la medicina humana la (PA) es fundamental para el diagnóstico correcto de algunas patologías, siendo uno de los principales procesos rutinarios en clínica, en cuanto a la medicina veterinaria y al diagnóstico de los pacientes no es un proceso que se realice con frecuencia en los gatos medir la (PA) que debe estar bajo parámetros normales de 124/84mmHg en caso de alteración en los parámetros normales sirve como determinante para el diagnóstico precoz de algunas enfermedades como lo son la hipertensión y la insuficiencia renal crónica en el peor de los casos. La recopilación de los métodos de medición de la (PA) en gatos es esencial para tener un conocimiento actualizado y un fácil acceso a toda la información necesaria que permita al clínico tener un diagnóstico, seguido de un tratamiento, así como realizar programas rutinarios de control de la (PA) en la clínica veterinaria, para evitar complicaciones de los pacientes felinos y que sirva como apoyo de diagnóstico de fácil acceso para los médicos veterinarios

Improvement of biomethane potential of sewage sludge anaerobic co-digestion by addition of “sherry-wine” distillery wastewater

Co-digestion of sewage sludge (SS) with other unusually treated residues has been reported as an efficient method to improve biomethane production. In this work, Sherry-wine distillery wastewater (SWDW) has been proposed as co-substrate in order to increase biomethane production and as a breakthrough solution in the management of both types of waste. In order to achieve this goal, different SS:SW-DW mixtures were employed as substrates in Biomethane Potential (BMP) tests. The biodegradability and biomethane potential of each mixture was determined selecting the optimal co-substrate ratio. Results showed that the addition of SW-DW as a co-substrate improves the anaerobic digestion of SS in a proportionally way in terms of CODs and biomethane production The optimal co-substrates ratio was 50:50 of SS:SW-DW obtaining %VSremoval ¼ 54.5%; YCH4 ¼ 225.1 L CH4/kgsv or 154 L CH4/kgCODt and microbial population of 5.5 times higher than sole SS. In this case, %VSremoval ¼ 48.1%; YCH4 ¼ 183 L CH4/ kgsv or 135 L CH4/kgCODt. The modified Gompertz equation was used for the kinetic modelling of biogas production with successful fitting results (r2 ¼ 0.99). In this sense, at optimal conditions, the maximum productivity reached at an infinite digestion time was (YMAX CH4 ) ¼ 229 ± 5.0 NL/kgSV; the specific constant was K ¼ 25.0 ± 2.3 NL/kgSV$d and the lag phase time constant was (l) ¼ 2.49 ± 0.1

Thermophilic and mesophilic temperature phase anaerobic codigestion (TPAcD) compared with single-stage co-digestion of sewage sludge and sugar beet pulp lixiviation

The performance of temperature phase anaerobic co-digestion (TPAcD) for sewage sludge and sugar beet pulp lixiviation (using the process of exchanging the digesting substrate between spatially separated thermophilic and mesophilic digesters) was tested and compared to both single-stage mesophilic and thermophilic anaerobic co-digestion. Two Hydraulic Retention Times (HRT) were studied in the thermophilic stage of anaerobic digestion in two temperature phases, maintaining the optimum time of the mesophilic stage at 10 days, obtained as such in single-stage anaerobic co-digestion. In this way, we obtained the advantages of both temperature regimes. Volatile solids removal efficiency from the TPAcD system depended on the sludge exchange rate, but fell within the 72.6e64.6% range. This was higher than the value of 46.8% obtained with single-stage thermophilic digestion and that of 40.5% obtained with mesophilic digestion. The specific methane yield was 424e468 ml CH4 per gram of volatile solids removed, similar to that of single-stage mesophilic anaerobic digestion. The increase in microbial activity inside the reactor was directly proportional to the organic loading rate (OLR) (or inversely proportional to the HRT) and inversely proportional to the size of the microbial population in single-stage anaerobic co-digestion systems

Seeking to enhance the bioenergy of municipal sludge: Effect of alkali pre-treatment and soluble organic matter supplementation

The aim of this research is to enhance the mesophilic anaerobic digestion of municipal sludge from Cadiz-San Fernando (Spain) wastewater treatment plant at 20 days hydraulic retention time (HRT). Two different strategies were tested to improve the process: co-digestion with the addition of soluble organic matter (1% v/v); and alkali sludge pre-treatment (NaOH) prior to co-digestion with glycerine (1% v/v). Methane production (MP) was substantially enhanced (from 0.36 ± 0.09 L CH4 l/d to 0.85 ± 0.16 L CH4 l/d), as was specific methane production (SMP) (from 0.20 ± 0.05 L CH4/g VS to 0.49 ± 0.09 L CH4/g VS) when glycerine was added. The addition of glycerine does not seem to affect sludge stability, the quality of the effluent in terms of pH and organic matter content, i.e. volatile fatty acids (VFA), soluble organic matter and total volatile solid, or process stability (VFA/Alkalinity ratio < 0.4). Alkali pre-treatment prior to co-digestion resulted in a high increase in soluble organic loading rates (more than 20%) and acidification yield (more than 50%). At 20 days HRT, however, it led to overload of the system and total destabilization of the mesophilic anaerobic co-digestion of sewage sludge and glycerine

Mesophilic anaerobic co-digestion of sewage sludge with glycerine: Effect of solids retention time

The main objective of this paper is to examine the effect of the increase in organic loading rates (OLRs), by reducing the solids retention time (SRT) from 20 d to 5 d, in single-phase mesophilic anaerobic co-digestion of sewage sludge with glycerine (1% v/v). It was experimentally confirmed that anaerobic co-digestion of these biowastes under steady-state conditions can achieve an 85 ± 5% reduction in volatile fatty acids (VFA) at SRTs of between 20 and 9 d, with a methane production yield of around 0.8 l CH4/l/d. Decreases in the SRT not only allow the sludge stability and biogas production to be maintained, but also lead to an increase in the waste that could be treated and lower operating costs. Therefore, mesophilic anaerobic co-digestion of sewage sludge and glycerin at a SRT lower than 20 d is possible and preferable due to being more economical and environmentally friendl

Información de las fases para la planificación de la rentabilidad empresarial

Estudio de la información especializada como clave para obtener rentabilidad empresarial, asimismo se comprueba que la comunicación instantánea de las necesidades de los demandantes junto con las fluctuaciones del mercado permiten obtener beneficios cuantiosos en una empresa con una dificultad mínima y crean un ciclo económico que es aprovechado por las empresas inteligentes, agrupándose en sectores de crecimiento.A study of specialized information as a key to achieving business profitability. The immediate communication of client needs and market fluctuations can lead to the achievement of considerable benefits with minimum difficulty, thereby creating an economic cycle of which intelligent businesses can take advantage and form growth sectors

Biomethane production improvement by enzymatic pretreatments and enhancers of sewage sludge anaerobic digestion

Enzymatic hydrolysis is recognised as an effective pre-treatment for increasing biodegradability of sludge. In this work, isolated commercial enzymes as well as in-situ enzymes producer bacteria were used respectively as enhancers and pre-treatments of sewage sludge. Biodegradability of sample as well as biomethane potential production were studied. Results showed that depuration efficiencies in terms of CODs (73.5-85.5 %) and TVS (28.5-42.7 %) were more than twice the control value. In addition, pre-treated samples as well as enhanced samples with enzymes generated more biomethane than control. The optimal ones, were those with the isolated proteases (P) and with bacteria (Bacillus licheniformis) treatment in-situ (F), producing a total volume of 72.4 ± 2.62 ml CH4 and 114 ml ± 0.46 CH4, respectively, increasing the biogas volume in 3.65 and 5.77 times respectively compared with control

Technology and science education: new challenges

As usual in JOTSE, the first editorial of the year presents an analysis of our Journal evolution. In this sense, we reflect on the changes undergone and the challenges we will face in the new year 2017Peer Reviewe

V International UNIVEST Conference: the challenges of improving assessment

The V International UNIVEST Conference aimed to provide an integrative and critical outlook on the assessment process, considering it as an activity integrated in general university teaching, with the active participation of all subjects involved at all educational stages. With that main goal, the emphasis in this edition was on creating a forum to debate and exchange ideas about university teaching and learning processes and the importance of placing students in the centre of those processesPeer Reviewe