Search results for "Costs and cost analysis"
showing 10 items of 49 documents
Estimating the environmental and resource costs of leakage in water distribution systems: A shadow price approach.
2016
Water scarcity is one of the main problems faced by many regions in the XXIst century. In this context, the need to reduce leakages from water distribution systems has gained almost universal acceptance. The concept of sustainable economic level of leakage (SELL) has been proposed to internalize the environmental and resource costs within economic level of leakage calculations. However, because these costs are not set by the market, they have not often been calculated. In this paper, the directional-distance function was used to estimate the shadow price of leakages as a proxy of their environmental and resource costs. This is a pioneering approach to the economic valuation of leakage exter…
Configurable low-cost plotter device for fabrication of multi-color sub-cellular scale microarrays.
2014
We report on the construction and operation of a low-cost plotter for fabrication of microarrays for multiplexed single-cell analyses. The printing head consists of polymeric pyramidal pens mounted on a rotation stage installed on an aluminium frame. This construction enables printing of microarrays onto glass substrates mounted on a tilt stage, controlled by a Lab-View operated user interface. The plotter can be assembled by typical academic workshops from components of less than 15 000 Euro. The functionality of the instrument is demonstrated by printing DNA microarrays on the area of 0.5 squared centimeters using up to three different oligonucleotides. Typical feature sizes are 5 μm diam…
Effectiveness of a physical therapeutic exercise programme for caregivers of dependent patients: a pragmatic randomised controlled trial from Spanish…
2020
Producción Científica
Machine learning for energy cost modelling in wastewater treatment plants.
2018
Understanding the energy cost structure of wastewater treatment plants is a relevant topic for plant managers due to the high energy costs and significant saving potentials. Currently, energy cost models are generally generated using logarithmic, exponential or linear functions that could produce not accurate results when the relationship between variables is highly complex and non-linear. In order to overcome this issue, this paper proposes a new methodology based on machine-learning algorithms that perform better with complex datasets. In this paper, machine learning was used to generate high-performing energy cost models for wastewater treatment plants, using a database of 317 wastewater…
Economic and environmental sustainability of an AnMBR treating urban wastewater and organic fraction of municipal solid waste
2016
[EN] The objective of this study was to evaluate the economic and environmental sustainability of a sub- merged anaerobic membrane bioreactor (AnMBR) treating urban wastewater (UWW) and organic fraction of municipal solid waste (OFMSW) at ambient temperature in mild/hot climates. To this aim, power requirements, energy recovery from methane (biogas methane and methane dissolved in the effluent), consumption of reagents for membrane cleaning, and sludge handling (polyelectrolyte and energy consumption) and disposal (farmland, landfilling and incineration) were evaluated within different operating scenarios. Results showed that, for the operating conditions considered in this study, AnMBR tec…
Colonic stenting in acutely obstructed left-sided colon cancer Clinical evaluation and cost analysis.
2015
This retrospective study aims to evaluate clinical and cost effectiveness of colonic stenting as a bridge to surgery and as a palliative treatment in acutely obstructed left-sided colon cancer.Onehundred fortyfour patients were collected between 2006 and 2012, with acute left-sided malignant colonic obstruction with no evidence of peritonitis: 96 patients underwent surgical treatment, 48 underwent decompressive stenting. For the stenting we used self-expandable metallic stent in nitinol.Patients who had successful colonic stenting were 40, 8 underwent elective surgery within 10 days, 32 decompression stenting had only palliative intent. in 8/48 patients subjected to stenting decompression t…
Evaluating resistance to Bt Toxin Cry1Ab by F-2 Screen in European populations of Ostrinia nubilalis (Lepidoptera: Crambidae)
2010
The large-scale cultivation of transgenic crops producing Bacillus thuringiensis (Bt) toxins have already lead to the evolution of Bt resistance in some pest populations targeted by these crops. We used the F2 screening method for further estimating the frequency of resistance alleles of the European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae), to Bt maize, Zea mays L., producing the Cry1Ab toxin. In France, Germany, and Italy, 784, 455, and 80 lines of European corn borer were screened for resistance to Mon810 maize, respectively. In Slovakia, 26 lines were screened for resistance to the Cry1Ab toxin. The cost of F2 screen performed in the four countries varied from U.…
One year of free school fruit in Norway-7 years of follow-up
2015
Background It is important that health-promoting efforts result in sustained behavioural changes, preferably throughout life. However, only a very few intervention studies evaluate long term follow up. Objective The aim of the present study is to evaluate the overall and up to seven years effect of providing daily one piece of fruit or vegetable (FV) for free for one school year. Methods A total of 38 randomly drawn elementary schools from two counties in Norway participated in the Fruit and Vegetables Make the Marks project. Baseline (2001) and follow-up surveys were conducted in May 2002, 2005 and 2009 (n = 320 with complete data) to assess FV and unhealthy snack intake. Mixed models were…
La gestión de casos como metodología para la conexión de los sistemas sanitario y social en España
2015
ResumenObjetivoEl objetivo de este artículo es presentar la evaluación de un proyecto de gestión de casos con pacientes crónicos en Valencia para la integración de la atención social y sanitaria. Este proyecto está vinculado con el «Modelo sociosanitario sostenible».EmplazamientoDepartamento de Salud 6, Comunidad Valenciana.ParticipantesPacientes con patologías crónicas de 65 o más años.IntervencionesEstudio comparativo con un grupo control y otro de intervención, no aleatorizado ni ciego. La intervención consistió en la creación de un equipo interdisciplinar de gestión de casos, el uso de una cartera común de recursos y su aplicación a una muestra piloto. Duración de la intervención: 6-9 m…
Economic evaluation of a guided and unguided internet-based CBT intervention for major depression: Results from a multicenter, three-armed randomized…
2017
Depression is one of the most common mental disorders and will become one of the leading causes of disability in the world. Internet-based CBT programs for depression have been classified as well established following the American Psychological Association criteria for empirically supported treatments. The aim of this study is to analyze the cost effectiveness at 12-month follow-up of the Internet-based CBT program Smiling is fun with (LITG) and without psychotherapist support (TSG) compared to usual care. The perspective used in our analysis is societal. A sample of 296 depressed patients (mean age of 43.04 years; 76% female; BDI-II mean score = 22.37) from primary care services in four Sp…