Research

  • Entamoeba histolytica: trophozoite, precyst and cyst studied by atomic force microscopy

    Amoebiasis is a disease caused by the cosmopolite parasitic protozoa E. histolytica; it has been estimated that the 10% of the world population is infected by this protozoa, which represents approximately 50 million of invasive amoebiasis cases and as much as 100,000 deaths per year. E. histolytica have four stages: the trophozoite, precyst, cyst and metacyst; trophozoite is the invasive…

    Read More »
  • Applications of transmission electron microscopy to virus detection and identification

    The size of viruses is with a few exceptions (the mimiviruses, poxviruses and some iridoviruses) below the resolution of the optical microscope. The 1000 times higher resolution of the transmission electron microscope (TEM), compared with the light microscope, allows direct observation of small virus particles. The improvement of both TEM equipment and technical procedures allows quick preparative methods and diagnosis…

    Read More »
  • Clinical courses and neurological signs of canine distemper virus infection in dogs

    Independent of the occurrence of neuropathological lesions, nervous infection by canine distemper virus (CDV) may lead to a variety of neurological signs observed singly or in combination; these signs include behavioral changes, focal to generalized seizures, cerebellar and vestibular signs, visual deficits, paresis and paralysis, tremors and limb weakness, myoclonus, and signs of leptomeningitis such as cervical rigidity and generalized…

    Read More »
  • Third generation biofuels from microalgae

    Biofuel production from renewable sources is widely considered to be one of the most sustainable alternatives to petroleum sourced fuels and a viable means for environmental and economic sustainability. Microalgae are currently being promoted as an ideal third generation biofuel feedstock because of their rapid growth rate, CO2 fixation ability and high production capacity of lipids; they also do not…

    Read More »
  • Power converters for wind turbines: Current and future development

    The wind turbine generator system requires a power conditioning circuit called power converter that is capable of adjusting the generator frequency and voltage to the grid. Several types of converter topologies have been developed in the last decades; each of them has some advantages and disadvantages. Mainly two converter topologies are currently used in the commercial wind turbine generator systems.…

    Read More »
  • Essential oils against yeasts and moulds causing food spoilage

    In foodstuffs with low pH, low water activity, or high carbohydrate content spoilage bacteria are, with some exception, usually not present because this environment is unfavourable for their growth. Food-spoilage yeasts and moulds, however, can grow under these circumstances and cause deterioration of various products, such as fruit and vegetable juices and purees, soft drinks, pickled vegetables, dairy products, bread,…

    Read More »
  • A challenge to mushroom growers: the green mould disease of cultivated champignons

    The aim of this minireview is to give an overview of the literature about the green mould disease of cultivated champignons (Agaricus bisporus) caused by Trichoderma species. The first significant green mould epidemic appeared in Northern Ireland in 1985, which was quickly followed by subsequent outbreaks in several countries. The symptoms of green mould appear as large patches of compost…

    Read More »
  • Advantages of traditional lactic acid bacteria fermentation of food in Africa

    Lactic acid bacteria (LAB) are a large group of closely related bacteria that have similar properties such as lactic acid production, which is an end product of the fermentation. LAB include Lactobacillus, Lactococus, Streptococcus and Leuconostoc species. LAB fermentation is a common way of preparing food traditionally in Africa. Some of the traditionally fermented foods in Africa include maize porridge,…

    Read More »
  • Entamoeba histolytica: trophozoite, precyst and cyst studied by atomic force microscopy

    Amoebiasis is a disease caused by the cosmopolite parasitic protozoa E. histolytica; it has been estimated that the 10% of the world population is infected by this protozoa, which represents approximately 50 million of invasive amoebiasis cases and as much as 100,000 deaths per year. E. histolytica have four stages: the trophozoite, precyst, cyst and metacyst; trophozoite is the invasive…

    Read More »
  • Piezonuclear reactions and DST-reactions

    Over the past two decades a great deal of evidence has been gathered about the existence and the possible energetic exploitation of a new type of reactions predicted by the Deformed Special Relativity, which is an extension of Special Relativity. According to that theory, the energy of every physical phenomenon determines, by deforming it, the space-time in which the same…

    Read More »
Back to top button
Close