Introduction XRF is an abbreviation used for x-ray fluorescence. It is the phenomena in which x-rays with greater threshold energy than energy of electrons produced by x-ray tube analyzer when strike the inner shell’s electrons of atoms, displacing the electrons hence create a vacant space....
Polyvinyl alcohol (PVOH),-(CH2-CHOH)n-, is a linear polymer which means it shows negligible amounts of branching. PVOH is soluble in water, which is unusual for synthetic polymers, but this allows PVOH to be used in a lot of commercial applications such as thickening and foaming agents....
Background Info: Chemical reactions are an everyday occurrence, but not everyone may realize that. There are six chemical reactions happening all around us, but this experiment will only focus on five. The different types of reactions are: Single displacement/replacement, double displacement/replacement, synthesis, combustion, and decomposition....
This lab involves the synthesis of an acrylic polymer. The reagents of hydroxyethyl acrylate, styrene, and butyl acrylate were reacted in a semi-batch process The product was then stored for one week before being crosslinked with a melamine-formaldehyde resin and a catalyst. The resulting coating...
Introduction Rare earth (RE) doped nanophosphors are widely used in light emitting diodes (LED’s), field emission displays (FEDs), scintillators, medical imaging and drug delivery. There exceptional electronic and optical properties are derived from f-f and f-d transitions. However, many reported synthesized nanophosphors degrade rapidly when...
Preston Brown, a graduate student at Texas Tech University was working on the highly energetic nickel hydrazine perchlorate (NHP) in early January 2010 when an almost fatal accident that scarred him for life occurred. In a series of events that involved disregard for his supervisor’s...
Hypothesis If temperature increases then the rate of reaction between the reactants will increase because the molecules will gain more kinetic energy and make it easier to overcome the activation energy. Made-to-order essay as fast as you need it Each essay is customized to cater...
Respiration is the chemical process by which organic compounds release energy. The compounds change into different ones by exergonic reactions. There are two types of respiration: Made-to-order essay as fast as you need it Each essay is customized to cater to your unique preferences +...
With global population growth and increased electronics consumption, how to effectively use electronic device without depletion has become one of the urgent world research issues. Diodes, such as P-N junction, Zener diode, Schottky diode, Tunnel diode, Crystal diode, Light emitting diode …etc have been extensively...
Mercury belongs to group 12 of the periodic table. It is a heavy metal. It is considered as an element as well as a metal. Its periodic neighbors are Gold and Ti. Mercury has an atomic number of 80and its atomic mass is. 201. It...
A mixed combination in which solute particles are greater than molecules or ions on the other hand cannot be seen by nude eye is called colloidal solution. An familiar mixture of two substances, one of which, called the dispersed phase, is regularly destruction the other...
Introduction Escherichia coli can be a harmless inhabitant in the gastrointestinal tract, however, it can also cause significant harm involving diarrhea and extra intestinal diseases. The pathogen has mortality worldwide. Outbreaks are common and fatal, especially to developing countries like the Philippines. They are a...
Abstract Bacterial lipase are commercially more important mainly because of the ease of their cultivation and optimization to obtain higher yield.Industrial demand of new sources of lipases with different catalytic characteristics stimulated the isolation and selection of Bacillus subtilis. This study was designed to investigate...
The Paramecium tetraurelia is a unicellular organism belonging to the kingdom of Protists. It can be found mostly in a fresh water environment and is covered in hair-like structures known as cilia. The cilia help with locomotion, allowing it to move forward and backwards. It...
Solutions are all around us. They are the beverages we drink to the chemicals we mix in a common feed lab. The technical definition of a solution is a homogenous mixture of two or more substances. A solution can be a solid dissolved in a...
Abstract This work was done for the study of the antibacterial activity of the peel extract of Musa acuminata using ethanol, methanol, and an aqueous solvent of extraction. We have used the agar well diffusion method for this study and we know the antibacterial activity...
All chemicals and solvents were commercially available and used as received. Thiophene (Th), benzothiophene (BT), dibenzothiophene (DBT), n-heptane, hydrogen peroxide (H2O2, 30 vol.%), acetic acid (CH3COOH), acetonitrile (MeCN), chitosan (low molecular weight with a degree of deacetylation of 75–85%), imidazole (C3H4N2), phosphotungstic acid (H3PW12O40.nH2O), and...
Introduction Nowadays, there are various chemicals being exposed to human naturally or synthetically. It can be present in pharmaceutical products, cosmetics, pesticides and even foods. Few of the chemicals present in typical daily product may be cancer inducing chemicals that can be dangerous for human...
Advantages Fabrication and Designing Process: The material allows for considerable flexibility is term of design. FRP can be field –fabricated using simple carpenter’s tool’s with carbon and diamond tip blades. No torches or welding are required. The light weight of the material allows for easier...
Basic uses include fertilizer manufacturing, mineral processing, wastewater processing, oil rening, and chemical synthesis. Sulphuric acid is used for a wide range of purposes both domestically and industrially. Sulphuric acid is used in the production of: Drain cleaners Detergents Synthetic resins Pharmaceuticals Petroleum catalysts Insecticides...
