Page 2 of 3 - About 21 Essays
  • Galaxiids Essay

    Introduction: Galaxiids are freshwater fish belonging to the galxiidae family. There are migratory and non-migratory species found in New Zealand. The migratory galaxiid fish that are native to New Zealand, are the Giant kōkopu (Galaxias argenteus), short-jaw kōkopu (Galaxias postvectis) and the banded kōkopu (Galaxias fasciatus) (DOC, 2010). Galaxiids generally breed in Autumn and their breeding and migratory patterns differ depending on the species (DOC, 2010). The adults of kōkopu species…

    Words: 790 - Pages: 4
  • The Importance Of Turbidity And Atomic Spectroscopy

    Turbidity: - Turbidity is a degree of water clarity. Turbidity is defined as an “expression of the optical property that causes light to be scattered and absorbed rather than transmitted in straight lines through the sample”. Nephelometers are used to measure the intensity of light scattered by contaminants present in water such as suspended and colloidal solids like clay, silt and microscopic organisms. Turbidimeters using the principle of nephelometer compare the light scattered due to…

    Words: 967 - Pages: 4
  • Staphylococcus Aureus Research Paper

    Staphylococcus aureus is responsible for various types of infections including skin and also respiratory tract infections. S.aureus can infect tissue when if the defensive line such as the skin or mucosal barriers had been breached. The infection caused by this bacteria can be spread in different modes such as direct contact from an infected wound, contact with the hyaluronidase, an enzyme produced by the bacteria that destroys tissues or even skin to skin contact with an infected person.…

    Words: 849 - Pages: 4
  • Hemochromatosis Research Papers

    A. Introduction Imagine yourself living with a medical condition that restricts you from eating certain foods that are rich in iron and foods that increase the absorption of iron. While it is impossible to completely avoid iron in your diet, even moderate amounts can be fatal in the long run, because your body absorbs more iron from the food that you eat than most people. For many years, hemochromatosis has been a mystery to medicine, and scientists all over the world have investigated the…

    Words: 816 - Pages: 4
  • Polymerase Chain Reaction

    Polymerase chain reaction (PCR) Generalities PCR is a method developed in 1985 by Kary Mullis and to obtain, by coupling a heat-resistant DNA polymerase and without cloning, amplification of a fragment of DNA known. Initially, DNA polymerase was isolated from a bacterium thermophilne (resistant to significant increases in temperature), as Thermus aquaticus (Taq polymerase). Currently, we use recombinant enzymes, whose; elaboration is easier and greater efficiency. The general principle of PCR is…

    Words: 1271 - Pages: 6
  • Rate Of Adsorption Lab Report

    The rate of nickel sorption by immobilized spent yeast in chitosan beads was determined as a function of the adsorbent dosage, initial pH and initial nickel concentration as shown in Fig. 1, 2 and 3, respectively. The sorption rate was rapid at the beginning of the period. It was observed that the equilibrium uptake of nickel by immobilized spent yeast was occurred after 2 hours. Kinetic studies of adsorption To investigate the sorption mechanism, the constants of sorption were determined by…

    Words: 1031 - Pages: 5
  • Microbial Symbiosis Research Paper

    The definition of Symbiosis is "the living together in an intimate association of two or more dissimilar organisms". Symbiosis is a crucial part of our existence and a reason for the beginning of life on this planet we call home. According to history of our planet, Earth was formed from absolute nothingness to tiny molecules of thick water vapor and many compounds of nitrogen, carbon dioxide, ammonia, and more. From these molecules, the disorder and order of the molecule reacted with each other,…

    Words: 1445 - Pages: 6
  • Chemical Enhanced Oil Recovery Case Study

    CHAPTER 1: BACKGROUND 1.1 ENHANCED OIL RECOVERY Oil production is differentiated into three stages: primary, secondary and tertiary, which is also known as Enhanced Oil Recovery (EOR). Primary oil recovery is restricted to hydrocarbons that naturally produced to the surface, or those that utilization artificial lifts, for example, pump jacks. The secondary recovery utilizes water and gas injection, dislodging the oil and driving it to the surface. US Department of Energy stated that by using…

    Words: 1503 - Pages: 7
  • Enargitite And Arsenic Analysis

    Ciminelli and Osseo-Asare, 1995; Lowson, 1982). Anderson (1951) reported 26 kJ/mol in the study of oxidation kinetics of galena (PbS) while Stenhouse and Armstrong (1952) reported an activation energy of 20 kJ/mol for the alkaline oxidation of pyrite. Koslides and Ciminelli (1992) suggested that during alkaline oxidation of sulphides, there is a change from chemical (activation energy > 40 kJ/mol) to diffusion (activation energy < 40 kJ/mol) control as the rate determining step when…

    Words: 1682 - Pages: 7
  • L. Cyprinacea Case Study

    1. Introduction Lernaea infection is a major disease problem encountered in carp culture in the Indian subcontinent and has been reported from Indian major carps Catla (Catla catla), Rohu (Labeo rohita), Mrigal (Cirrhinus mrigala) , exotic carps silver carp (Hypophthalmichthys molitrix), grass carp (Ctenopharyngodon idella) and indigenous carps Labeo fimbriatus (Nandeesha et al., 1984, 1985; Tamuli and Shanbhouge, 1996; Zafar et al., 2001). The three Indian Major Carps viz., Catla, Rohu and…

    Words: 2892 - Pages: 12
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