, This is a review of various Russian investigations concerning the clinical afl pathopsychological characteristics of the brain-damaged child. The Russians do A0 accept as mentally retarded those unsuccessful children who are generally found 1,1 schools for the educationally subnormal. Most of these are either "pedagogical'5 neglected" or have "partial or peripheral difficulties", e.g. defecti...

Since the beginning of the last century, the localization of brain function is presented by Brodmann areas, or maps that are a result of anatomic organization. They are used in order to give a global idea of cortical structures for given sensory cognitive functions. In the last decades, the analysis of brain oscillations gained high importance for the correlation of brain functions. Moreover, t...

We present an explicit solution to a classic model of cell-population growth introduced by Luria and Delbrück [1] 70 years ago to study the emergence of mutations in bacterial populations. In this model a wild-type population is assumed to grow exponentially in a deterministic fashion. Proportional to the wild-type population size, mutants arrive randomly and initiate new sub-populations of mut...

Bacteriophage particles are called active when they are able to give rise to production of active phage following adsorption on their specific host bacterium. This is generally detected by the formation of a plaque when plated on nutrient agar by standard techniques (Adams, 1950). If the particles are exposed to ultraviolet light, a fraction of them loses the ability to give rise to production ...