Articles Related to Coal
Activated Charcoal and Derivate Materials in Drugs and Biopharmaceutical Purification: Impurity Aspects
In literature are reported various use of activated charcoal AC and derivates in biopharmaceutical purifications.Aim of this
work is to verify impurity proficle when using this technology.Various commercial products are reported here but it is not
the scope of this work put in relation with any toxicological reaction: only to describe the technique used in this field.Because
various drugs and bioproduct need purification steps it is if of interest to see some material science peculiarity
Carbon-Dioxide Emissions Due to Fossil Fuels Consumption
A majority of Carbon-dioxide including smaller amounts of methane and nitrous are emitted from the consumption of
fossil fuels around the world to meet the sustainable development goals and global prosperity. Studies have shown that the
increase in greenhouse gases has negative effects on human health, and the environment around us. Emissions from the
consumption of fossil fuels in factories and industries either to produce electricity or transport people, goods and services
cause the release of CO2 and other pollutants into the atmosphere. The majority of industrial energy is supplied by nonrenewable energy resources, which mainly consist of fossil fuels. Currently, fossil fuels are the main source of energy and
are concentrated in some regions of the world, therefore direct contamination occurs in areas where they are stored or
processed. A majority of electricity consumed by cities and countries across the world is produced from fossil fuels, which
accounts for the highest percentage of overall CO2 production in that particular country. People will share the common
global environmental problems, either it is local or regional, hence immediate actions are needed to tackle problems at
national and regional and global levels. Fortunately, with the advent of new technologies and intervention strategies, it is
possible to reduce pollution and reduce the rate of rising global temperature that might result in better economy and ecological systems as well as providing sustainable energy resources. In this research the data on nonrenewable energy sources, fossil fuel reserves in different regions, production and consumption rate of fossils have been identified and reviewed.
Additionally, mathematical calculation has been done to find the carbon dioxide emission amounts, both international
and national legislations as well as further recommendations have been provided to reduce or prevent emissions.
Multiphysics Coupled Modeling of Coal Seam Fracture Stimulation Under Highly Pressurized Gas Impact Loading
3D gas-solid coupled symmetrical numerical model was developed on the basis of multiphysics finite element platform to study coal seam fracture stimulation under the high pressure gas impact loading generated by the highly pressurized multi-discharge carbon dioxide gas fracturing technique to improve pre gas drainage efficiency. The purposes of this study are to understand the natural and operational factors contribute to coal seam fracture stimulation and improvement of coal seam gas drainage efficiency and the interaction of these parameters.
Metastatic cancer of the pancreas: Historical review
During the 19th Century, there was a difficult choice concerning whether a pancreatic cancer is primary or secondary. However, in this paper, it is shown that some views were decidedly in favor of attack from other primaries. Indeed, the evidence of spread to the pancreas included either concise or coalescent lesions.
The Effects of the Film Thickness and Roughness in the Anodization Process of Very Thin Aluminum Films
The anodization of aluminum foils having micrometer thickness is a common process and results in hexagonally self-ordered alumina membranes. However, anodic aluminum oxide (AAO) membranes fabricated from nanometer-thin films present new challenges to the anodization process, since aluminum films adheres poorly on supporting substrates and the smoothness of the film is highly related to the kind of substrate.
Anodic Oxidation of Titanium in Sulphuric Acid and Phosphoric Acid Electrolytes
Anodisation of pure titanium has been carried out in sulphuric and in phosphoric acid solutions at potentials ranging from 50 to 150V. The SEM and AFM morphological analysis indicates that, within this potential range, oxidation in sulphuric acid solution produces better developed mesoporous oxide layers.