Science essays

ABSTRACT __________________________________________________________ The project is aimed to design Amine Treating Unit for natural Gas (from a natural repository or related to an crude production ) can contain acid gas (H2S as well as CO2). The Gas Sweetening Process expects to evacuate part or the majority of the acid gas that the common gas contains for … Read more

Introduction Emerging and re-emerging diseases of wildlife increasingly pose threats to animal and human health. Studies across a range of host-pathogen systems indicate that host species’ diversity can regulate the ability for a pathogen to establish Johnson et al. (2015). Studies of natural populations have also examined correlations between the spatial distribution of disease and … Read more

Chapter 1 Introduction ——————————————————————————————————- Two types of empherical observation-discreetness of energy (which are taken place in light matter interaction) and the nature of light as a particle and nature of particle (electron etc.) as a wave (also known as wave-particle duality) motivate towards the quantum mechanics. In 1900 Max Planck postulated that exchange of energy … Read more

ABSTRACT The growth of the okra plants, or Abelmoschus esculentus, under different treatments of manure and weed compost was evaluated and studied. The study was conducted in order to compare the effectiveness of the organic composts on the growth of the okra plant and conclude which option is more effective. The study used different concentrations … Read more

Abstract The current investigation was carried out to evaluate the effect of arbuscular mycorrhizal (AM) fungi and potassium silicate (K-Si) in alleviating adverse impact of salt stress in Thevetia peruviana. The plants were irrigated with water salinity (0, 4.7, 9.4 and 14.1 dSm-1 sodium chloride (NaCl) with and without application of AM-fungi or K-Si. Potassium … Read more

1.0. Introduction/Background to the Study Accumulation of organic pollutants can cause serious problems in various environmental compartments due to their toxicity, persistence and bioaccumulation. Depending on the environmental compartment in which organic compounds are present (e.g. soil, benthic sediments, surface and ground waters), they can undergo slow changes resulting from biodegradation, a major degradation process. … Read more

a. Shinoda Test(Magnesium Hydrochloride reduction test): To the test solution add few fragments of Magnesium ribbon add concentrated hydrochloric acid drop wise, pink scarlet, crimson red or occasionally green to blue colour appears after few minutes. b. Zinc Hydrochloride reduction Test: To the test solution add a mixture of zinc dust and concentrated hydrochloric acid. … Read more

Have you ever thought of what makes your lollipop blue? Do you know where all these colors come from? Many of the dyes we use in foods come from plant pigments. Plant pigment is a protein molecule that reflects a certain color of light from the sun. Many products take these pigments and compose them … Read more

More than 150 species of mycobacteria are validly described, and most of them are opportunistic pathogens. All mycobacteria cause risk for human and animal health. Human infections due to environmental mycobacteria are increasing in both industrial and developing countries. The most susceptible risk groups are children, seniors and people or animals with immunosuppressive conditions. Drug … Read more

1. Introduction Nanotechnology was defined as the manipulation of matter via a number of elements and/or real processes to produce components along with specific properties, which can be used in certain application [1]. A new nanoparticle could be defined as a new tiny particle which includes a minimum of one sizing below 100 nanometers in … Read more

BACKGROUND The Cretaceous Period, which began 145.5 ma (Bui et al., 1995) was the final stage of the ‘’Age of Dinosaurs’’. The Cretaceous Period saw some major worldwide events, such as; increased sea floor spreading rates along mid-ocean ridges and the highest marine transgressions of the post- Pangean world (The Mesozoic Era II, 2010). Movements … Read more

Introduction Human DNA is naturally intriguing concept, and the Human Genome Project, HGP which according to Wikipedia is the planet’s largest joint biological program aims at creating a complete and accurate sequence of the 3 billion DNA base pairs that make up the human genome i.e. determining the order of occurrence of base pairs in … Read more

Abstract Gram staining is a procedure which uses light microscopy. It is a method of differentiating gram negative bacterial cells and gram positive bacterial cells. The gram staining procedure was designed by Christian Gram in 1884. Gram negative bacterial cells contain a thin peptidoglycan wall in addition to the outer cell membrane. Gram positive bacterial … Read more

Introduction For all varieties of plants to survive they need to have adaptations that allow them to survive in their environment. There are many factors that cause plants to develop adaptations. For some of these adaptations it is known that plants can sometimes change the way they photosynthesise, respire and transpire which can give them … Read more

Spermatogenesis is the development of spermatogonia into spermatozoa and this process takes place in the seminiferous tubule of the adult testis. Three central processes encompasses spermatogenesis: mitotic replication of spermatogonia, meiotic proliferation of spermatocytes, in which genetic material is recombined and segregated, and post-meiotic differentiation into spermatozoa, also termed spermiogenesis (Russell et al., 1990a), (Soares … Read more