Nd:YAG pulse laser system was used to fabricated TixBi1.7Pb0.3Sr2Ca2Cu3Oy superconductor thin films, were x=0.1, 0.3 and 0.5. All the samples have been annealed after deposition with flow of oxygen for two hours at 800 ºC. X-ray diffraction analysis evidenced that the prepared thin films were consistent of low 2212 and high 2223 phases. Scanning electron […]

Graphene and its derivatives are extensively used in many applications from medical to environmental or electronic applications, as well. The high interest for this kind of materials is due to the extraordinary electrical and mechanical properties, the good biocompatibility and a remarkable specific surface area. From the point of view of environmental applications, two properties […]

Clustering by fast search and find of density peaks (CFSFDP) is a new density based algorithm that discovers the centers of cluster by finding the density peaks efficiently. CFSFDP is applicable to a lot of clustering problems that deal with static data. Nowadays, more and more data, such as, social networks, blogs, web pages, Internet […]

The oxidation of unsymmetrical dimethylhydrazine(UDMH) with different oxidizing agents in atmosphere, water and soil has been reviewed. Emphasis is put on comparison of the oxidative products and the oxidation mechanism in different systems rather than on individual results. The number of the detected oxidative products are more than 30, and major identified products are N-nitrosodimethyamine, […]

The paper presents the most important issues relating to the research and application of materials with controlled-release properties that can increase the effectiveness of nutrient uptake, alleviate the negative influence of fertilizers on the environment and reduce labor and energy consumption associated with the use of conventional fertilizers. The article discusses predominantly commercially available controlled-release […]

Understanding the connection between soil biodegradation and temperature is a matter of concern nowadays. Increasing temperature increases the rate at which soil is degraded by microbial action enhancing carbon losses with a negative impact on the atmosphere and water quality. The number of methods allowing these measurements is small, and additional options that contribute to […]

The cause of the emergence of bio-negative interaction of social and environmental situation in the oil- and gas-field facilities in the Gulf of Guinea (GoG) region has been studied. It has been established that the cause of the negative synergy of socio-ecological situations is due to the imbalance of equipment and building technology, along with […]

Manganese oxides supported on granular activated carbon (MnOx/GAC) for degradation of UDMH wastewater was prepared via facile in-situ reduction of permanganate by activated carbon. The growth and properties of MnOx/GAC were characterized by scanning electron microscopy, X-ray diffraction, Raman spectra and X-ray photoelectron spectroscopy. Test results showed that MnOx deposited on GAC surface was poorly […]

New mine tailings matrices were formulated from two different mine tailings from Eastern Canada. The tailings were mixed with Portland cement, fly ash, slag and a new binder called Calsifrit. The study consisted of two phases where in the first phase 5 cm3 cubic tailings matrices were formulated to assess the change in curing period […]