You will prepare ‘defined’ medi a that will be used to study carbon and nitrogen requirements of bacteria. You will study the use of a medium classified as both selective and differential. You will use two techniques to culture anaerobic bacteria. Types of culture media.
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Author by: Laurent VullietLanguage: enPublisher by: EPFL PressFormat Available: PDF, ePub, MobiTotal Read: 56Total Download: 867File Size: 42,6 MbDescription: Environmental Geomechanics cover a wide range of topics concerned with the mechanical behaviour of geomaterials. The problems addressed are complex, mainly due to the coexistence of several species and phases, to their interaction and their often non-linear behaviour.
Experimental evidence is difficult to obtain and laboratory as well as in-situ testing procedures present serious challenges. Numerical techniques are used to solve the complex non-linear analytical systems. Integration of new models for engineering applications will require a considerable effort among engineering teams.
Due to the number of phenomena influencing the solutions an interdisciplinary approach to Environmental Geomechanics is therefore necessary. The first part of the volume contains invited keynote lectures addressing various aspects of the subject of Environmental Geomechanics. It can serve as a starting point for further research thanks to its in-depth treatment and its rich bibliographic references.
The second part contains various selected contributions. These reflect the broad scope of Environmental Geomechanics and appeal for more research efforts in this domain. Many practical problems relating to engineering practice are also presented which make the book an invaluable 'state of the art' guide in this very important field. Author by: Simon GoddekLanguage: enPublisher by: SpringerFormat Available: PDF, ePub, MobiTotal Read: 33Total Download: 426File Size: 48,6 MbDescription: This open access book, written by world experts in aquaponics and related technologies, provides the authoritative and comprehensive overview of the key aquaculture and hydroponic and other integrated systems, socio-economic and environmental aspects. Aquaponic systems, which combine aquaculture and vegetable food production offer alternative technology solutions for a world that is increasingly under stress through population growth, urbanisation, water shortages, land and soil degradation, environmental pollution, world hunger and climate change. Author by: Max MaurinLanguage: enPublisher by: Frontiers E-booksFormat Available: PDF, ePub, MobiTotal Read: 42Total Download: 521File Size: 47,8 MbDescription: Francisella tularensis, the causative agent of tularemia, is a paradigm among human pathogens. This Gram-negative bacterium has an intracellular lifestyle, which probably reflects an adaptation to its natural animal and protozoa reservoirs.
Biologie Des Microorganisms Pdf Files Online
This is one of the most infectious agents in humans and animals; only a few bacteria are needed to induce a severe infection in both types of hosts. The clinical presentation and severity of human tularemia varies according to the portal of entry of bacteria, the bacterial inoculum, the virulence of the infecting strain, and the immune response of the host. Although most infections occur after direct inoculation of bacteria through the skin (through skin wounds or bites of arthropods), pneumonia due to inhalation of infected aerosols is the most feared of the clinical forms of the disease, particularly in the context of biological threat. Two subspecies are responsible for tularemia (subsp. Tularensis and subsp.
Holarctica), and several clades have been described for each, which might be associated with changes in disease severity in humans. Tularemia is also more severe in people with an impaired immune response. No safe vaccine is currently available for prophylaxis of tularemia in humans.
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On the other hand, control of proliferation of F. Tularensis in wildlife is not feasible. Thus, only the anti-infective agents are used for treatment and prophylaxis of human tularemia. The standard options include aminoglycosides (gentamicin), tetracyclines (eg, doxycycline) and fluoroquinolones (eg, ciprofloxacin).
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The selection of acquired resistance to these antibiotics in F. Tularensis, especially in the context of a biological threat, may quickly limit the therapeutic options. New prophylactic and therapeutic alternatives must be developed rapidly. The present Research Topic focuses on potential new strategies for treatment of tularemia, including the development and evaluation of new compounds having proper antibacterial activity, reducing the virulence of F. Tularensis or enhancing the immune host response.