Cracow University of Technology posted this:Institute of Thermal Power Engineering - Cracow University of TechnologyInstitute of Thermal Power Engineering is providing research and education in the field of energy technologies. The Institute covers a wide area of energy research, from expert works for the power sector, to investigations of the most advanced technologies for energy generation
Universitat de València posted this:Nitrogen removal control system based on low-cost sensorsThis control system allows optimization of the activated sludge process since maintains effluent nitrogen concentration under limit values with minimum energy consumption. The most remarkable advantages provided by this technology are: Cost reduction of initial investment and maintenance Easier operation than nutrient analysers Lower time response Lower aireation energy consumption Lower pumping energy consumption
Universitat de València posted this:Nanocomposites for electrochemical supercapacitorsThe new materials have the following advantages over existing materials in supercapacitor’s sector: Supercapacitive properties: they have specific capacitance values much higher than those obtained by commercial nanostructured carbon electrodes. Low cost: obtained by a chemical process of a single stage, with a single precursor, at low temperature, and highly available, non-polluting and low cost materials. Good cyclability: testing in cyclability is promising in terms of electrochemical and mechanical stability. In parallel to its advantages as supercapacitors, the nanocomposites show the advantages associated with the following additional properties: Giant magnetoresistance, GMR: this property is observed at room temperature, and high magnetic fields are not needed. Source of carbon nanoforms: based on the nanocomposite, can be obtained a mixture of carbon nanoforms consisting of nano-onions and multi-walled nanotubes.
Universitat de València posted this:Passive sensor for in situ detection of amines in atmospheres Simplicity and ease of use: it is a passive colorimetric sensor that does not require any kind of pretreatment or power supply or external instrument. Low cost: simple fabrication process without high costs Low detection limits: suitable for use in real atmospheres, of the order of 3 mg/m3. Quantitative detection: direct quantitative detection can be carried out by diffuse reflectance of the sensors. Stability: against a wide range of temperatures and to humidity and solar radiation. Reversion resistance.
Universitat de València posted this:New method for the production of metallic oxides with spinel structureThis procedure is faster, with lower energy consumption and generates purer spinels than known methods for spinel production. With this invention, it’s possible to provide new methods for obtaining spinels or other mixed oxides with a higher processability and versatility than those existing to date, allowing also for obtaining new spinels and removing the need for extremely costly phases in time or energy, including milling or heating at temperatures up to 1200ºC.
xrqtc posted this:Polymorphism Prediction in Crystal Systems of Technological InterestCurrent polymorphism studies are being carried out using one of the following three alternatives: atom-atom potentials, DFT (Density Functional Theory) calculations and ad-hoc potentials. However, all of them have serious disadvantatges. 1) with software that uses atom-atom potentials: Advantages: fast and capable of working with large molecules. Disadvantages: the "blind tests" carried out by the "Cambridge Crystallographic Data Centre" are giving a 50% maximum success in the predictions. 2) with software based on DFT calculations: Advantages: good results Disadvantages: they are computationally very slow, so they are only used for very simple molecules compared with drug molecules. In addition, they have errors predicting van der Waals interactions and weak hydrogen bridges if not corrected empirically. 3) with software using ad hoc potentials for each molecule obtained from systematic exploration of the surface potential of intermolecular interactions: Advantages: efficient and faster. Disadvantages: some potentials should be calculated for each molecule studied, which are complex and slow, and is not general. The approach presented here is new and unique because the potential Pixel has never been used before for drawing polymorphic predictions and it has shown to present the advantages of all the alternatives combined. This is the first research group which has brought the potential Pixel to this level of calculation. The potential calculations and the applicability of the methode based on pixels have the same quality that the sophisticated ab initio based potential calculations. Besides, this is much faster than DFT (Functional-Based Theory)-based and ad hoc potentials ..