The production of thiaminase by a bacterium of the intestinal tract as an etiologic factor of beriberi has received considerable study by Japanese work ers. Chang (1) observed that when a thiamine solution was placed in the sigmoidal colon of a patient having habitual constipation combined with beri beri, the vitamin soon disappeared. The first discovery of a thiaminase producing micro-organism...

Abstract: By 2025, when world population is projected to be 8 billion, improving living standards without destroying the environment is a global challenge. Contamination of the environment with pathogens and heavy metal ions has been an important concern throughout the world for decades. Development of sensors for real-time detection of toxic metals and bacterial contamination in water supplies...

All animals have an effect on the environment, but some key species – called ecosystem engineers – can have a particularly large influence. Their impact can be positive, by creating and maintaining habitats and increasing biodiversity, but they can also be negative, by destroying habitats and reducing biodiversity. Interestingly, the magnitude of the effect that an ecosystem engineer has on the...

All animals have an effect on the environment, but some key species – called ecosystem engineers – can have a particularly large influence. Their impact can be positive, by creating and maintaining habitats and increasing biodiversity, but they can also be negative, by destroying habitats and reducing biodiversity. Interestingly, the magnitude of the effect that an ecosystem engineer has on the...

Nowadays, the number of forest and vegetation fires is gradually increasing, which are destroying ever larger areas Earth. In order to increase efficiency activities aimed at prevention elimination consequences fires, a scientifically based investigation essential. Our goal examine in simulation environment. During our research work, model was created with WFDS program, spread effects fire give...