Environmental issues of biomass utilisation Biofuels are expected to be produced in larger volumes in the coming decades. However‚ unlike other renewable energy strategies (solar‚ wind‚ sea waves)‚ biomass resources are constrained by the availability of land and water. Energy inputs and fertilizers are also required in their growth‚ cultivation and production. In some cases‚ biofuels can consume a significant amount of energy that is derived from fossil fuels (Blottnitz and Curran‚ 2007).
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BIOLOGICAL HAZARDS Biological hazard are acquired from disease causing microorganism and the poisonous toxins they may produce. Biological hazard are far the most dangerous foodborne hazard in the food service and food retail businesses. These includes harmful microorganism seen only in the microscope 1. BACTERIA 2.VIRUSES 3. PARASITES 4. MOLDS 5. YEAST Other living organism are: • Insects: RODENTS FARM ANIMAL DOMESTIC PETS BIRDS FISH PLANTS TRANSMIT DISEASE TO HUMAN BEING
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on each other? Biogenesis is important for the germ theory of disease because after scientists proved that microorganisms could not spontaneously generate by heating and blocking microorganisms from entering and leaving alone for months‚ still no microorganisms were found. They proved that living cells can only come from already existing cells. Scientists then studied how microorganisms can cause physical and chemical changes in organic materials and thought they may act similar with plants and
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of nutrition in microorganisms and distinguish among them in terms of energy and carbon sources The four major modes of nutrition are: 1. Photoautotrophs: (ex. Plants‚ some protozoa‚ & alegae) -microorganism which use carbon dioxide as a carbon source and light energy from the environment to make their own food. 2. Chemoautotrophs: -microorganism which uses carbon dioxide as a carbon source and catabolizes organic molecules for energy. 3. Photoheterotrophs: -microorganism which requires
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Unknown Microorganisms May 1‚ 2013 This paper is based on an experiment done in the laboratory over a period of time using the standard method of identifying an unknown microorganism relying on features such as morphology‚ arrangements and biochemical reactions. It was done in succession with each step complimenting the other. At the end of the experiment three microorganisms Bacillus azotoformans‚ Staphylococcus aureus‚ and Escherichia coli was identified and one result was inconclusive. The
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Test 2 Topic IV: Infection/Wound Table 31-2 Nosocomial Infections Site Most common Microorganisms Causes Urinary Tract Escherichia coli‚ Enterococcus species. Pseudomonas aeruginosa Improper catheterization technique‚ contamination of closed drainage system‚ inadequate hand cleansing Surgical sites Staphylococcus aureus (including MRSA). Enterococcus species (including VRE). Pseudomonas aeruginosa Inadequate hand cleansing‚ improper dressing change technique Bloodstream Coagulase-negative
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head: MICROORGANISMS Microorganisms Chloe Frederick Lauren Smith Keiser University Abstract Microorganisms can be highly dangerous. Some microorganisms include Varicella Zoster‚ or chicken pox. Corona Virus‚ SARS and Lister or food poisoning. There are many viruses and microorganisms out there and these are just a grain of sand on a beach compared to the amount of dangerous microorganisms there is out there. The microorganisms I have
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barriers to reduce the risk of harmful microorganisms entering the body (the skin‚ chemicals in tears‚ sweat and stomach acid). In suitable conditions (such as inside the body) these microorganisms can reproduce rapidly. Symptoms of a disease are caused by damage done to cells by the microorganisms or the poisons (toxins) they produce. Our bodies have immune systems to defend themselves against the invading microorganisms. The immune system uses antigens on microorganisms to recognise them. White blood cells
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A FERMENTER OR BIOREACTOR MICROBE INPUT :- The microorganisms that will carry out the fermentation process are cultured separately until they are growing well. These are introduced into the fermenter through the microbe input. NUTRIENT INPUT :- The microorganisms require an energy source to carry out fermentation. The energy source is usually a carbohydrate. Growth materials like amino acids for protein synthesis are also added through the nutrient input. STERILE CONDITIONS:- It is necessary
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INFECTION CONTROL Pathogen- Infectious agent Colonization- If microorganism is present or invades host‚ grows and/or multiplies but does not cause infection. Communicable disease- if infectious disease can be transmitted from one person to another. -Symptomatic-if pathogens multiply and cause clinical signs/symptoms. -Asymptomatic- if no s/s are present *CHAIN OF INFECTION: 1. An infectious agent or pathogen 2. A reservoir or source for pathogen growth 3. A portal of exit from the
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