Search results for "ESAL"

Optimal design of cogeneration plants for seawater desalination

2004

Multi-stage flash (MSF) and reverse osmosis (RO) are the most common techniques for seawater desalination. A significant difference between these methodologies consists of their different energy requirements, i.e., thermal energy for MSF and mechanical energy for RO plants. The presence of both desalination systems (MSF and RO) appears to be suitable for cogeneration plants. The reject heat from the power cycle can feed an MSF section, while some power feeds the RO section and the MSF auxiliary equipment; the rest is sold to the grid. A criterion for the optimal design of such tri-functional cogeneration plants is proposed, based on exergo-economics and on profit maximization. In particular…

Multi Sources Water Supply System Optimal Control: A Case Study

2014

The optimal operation of a multi quality network was analysed applying Linear Programming methods. The peculiar service condition of the industrial city of Gela (Italy) was investigated. The network is supplied both from waters derived from a desalination plant and other natural sources. The method aimed to minimise energy cost and find the optimal operation control, while satisfying demand and quality constraints, specifically with regard to water temperature. The method proved to be effective in the selection of the optimal management strategy after the definition of a specific water quality target. (C) 2014 Published by Elsevier Ltd.

Valoración patrimonial de los yacimientos del Mioceno inferior del Barranco de Campisano de la Cuenca de Ribesalbes-Alcora (Araia d'Alcora, Castelló,…

2019

En el presente trabajo se realiza una valoración patrimonial del conjunto de yacimientos del Mioceno inferior del barranco de Campisano (cuenca de Ribesalbes-Alcora). Los resultados obtenidos al calcular los parámetros según la metodología del Inventario Español de Lugares de Interés Geológico (IELIG) ponen de manifi esto el alto valor científi co y didáctico de la zona, así como un valor turístico y recreativo medio. El riesgo de degradación es medio, por lo que debería ser tenido en cuenta para la protección de los yacimientos a corto plazo. En consonancia con estos datos, se propone la consideración de los yacimientos como LIG (Lugar de Interés Geológico) y su inclusión en el IELIG. In t…

Las guerras del agua

1997

Changes in immunohistochemical levels and subcellular localization after therapy and correlation and colocalization with CD68 suggest a pathogenetic …

2011

In an earlier work, the role of heat shock protein (Hsp60) in the pathogenesis of ulcerative colitis (UC) was suggested by its significant increase in the pathological mucosa parallel with an increase in inflammatory cells. More data in this direction are reported in this work. We analyzed by immunohistochemistry biopsies of colon tissue from 2 groups of patients with UC and treated with either 5-aminosalicylic acid (5-ASA) alone or in combination with a probiotic. We looked for inflammatory markers and Hsp60. Both the treatments were effective in reducing symptoms but the group treated with both 5-ASA and probiotics showed better clinical results. Amelioration of symptoms was associated wi…

Renewable energy desalination: performance analysis and operating data of existing RES desalination plants

2015

Abstract: During the last decades, several small autonomous brackish or seawater desalination units driven by renewable energy sources (RES) have been developed within EU and non-EU projects around the world. A significant number of these units were designed, developed, and operated by research centers/universities, in collaboration with companies working in the field of RES and desalination, in their own premises (laboratories) in order to investigate the reliability and performance of the technologies matching in small-scale and autonomous operations. Some systems were also developed for the supply of fresh water to remote areas, and particularly to cover the needs of small villages or co…

Vai Donbasa konflikta attīstība ved pa iesaldētā konflikta ceļu?

2017

Darba tēma: “Vai Donbasa konflikta attīstība ved pa iesaldētā konflikta ceļu?” Pētījuma izvēli noteica iesaldēto konfliktu teorētiskā pamatojuma salīdzinoši nelielā izpēte akadēmiskajā rakursā; to nozīme starptautisko norišu prognozēšanā, kā arī Latvijas – Krievijas attiecību iespējamie scenāriji. Pētījuma mērķis: izpētīt, vai Donbasa konflikta attīstība norāda uz tā veidošanos par iesaldēto konfliktu. Galvenie uzdevumi - izpētīt: 1.iesaldēto konfliktu teorētisko pamatojumu; 2.postpadomju telpas iesaldētos konfliktus un tos salīdzināt; 3.Donbasa konfliktu un salīdzināt to un tā attīstību ar iesaldētā konflikta un tā attīstības modeli. Izmantotā teorētiskā pieeja balstīta uz konfliktu un reā…

CFD Modelling of the Demister in the Multi Stage Flash Desalination plant

2011

Abstract Demisters are used to remove entrained brine droplets from flashed off vapor within the flashing stages of the multi stage flash desalination process (MSF). This is necessary to prevent accumulation of brine droplets on the outside surface of the condenser tubes and contamination of the desalinated water. The aim of this work is to design a new demister with lower pressure drop and unaffected separation efficiency which can be later installed in the flashing stages of the MSF plant and causes reduction in the required heat transfer area. In this work the demister performance is predicted as a function of design (wire diameter), and operating parameters (stage temperature). This obj…

A novel 2D process model of electrodialysis units in cross-flow layout for the assessment of membrane deformation effects

2022

Apoptosis of T cells and the control of inflammatory bowel disease: therapeutic implications.

2007

Inflammatory bowel diseases (IBDs) such as Crohn’s disease and ulcerative colitis are the result of an imbalanced mucosal T cell response. Despite the identification of a genetic susceptibility region in the NOD2/CARD15 (nucleotide-binding oligomerisation domain 2/caspase recruitment domain 15) gene, the aetiology is still unclear. Thus, the hunt for disease-initiating factors such as defects in the mucosal barrier or pathogenic microorganisms is ongoing. By contrast, the immunopathogenesis in IBDs is better understood. The identification of cytokines that are involved in T cell and monocyte signalling led to specific therapeutic concepts. Recent data have clearly shown that the most powerf…