Those peculiar metabolic disorders, which we now call avitaminosis, have been known for a long time time. Tsynga. example, described in detail several hundred years ago; back the XII century, during of Crusades, it became widespread. Pellagra is also over 300 ago America.

muscle biopsy has been used for a long time for diagnosis of muscular, nerurogenic and systemic disorders with muscle involvement, because only very few of these disorders show sufficient specific clinical features for definite diagnosis. since the presence of difficulties in the screening of numerous genes, muscle biopsy could be a time and cost effective procedure for solving the diagnostic p...

Abstract Dark organic-rich layers (sapropels) have accumulated in Mediterranean sediments since the Miocene due to deep-sea dysoxia and enhanced carbon burial at times of intensified North African run-off during Green Sahara Periods (GSPs). The existence orbital precession-dominated Saharan aridity/humidity cycles is well known, but lack long-term, high-resolution records hinders understanding ...

from long time ago the shortage of finance in business practices was one of the striking problems for traders and thus there have always been endeavors to find a solution to it. one of the ways put forward was using the stocks stored in warehouses as security for loans. taking advantage of a descriptive method, this paper describes field-warehousing as a means of raising cash funds and the regu...

Although many mathematicians have searched on the fractional calculus since many years ago, but its application in engineering, especially in modeling and control, does not have many antecedents. Since there are much freedom in choosing the order of differentiator and integrator in fractional calculus, it is possible to model the physical systems accurately. This paper deals with time-domain id...

author reports a case of 67- years- old men referred to donga university hospital silicosis who had worked in tunnel drilling where presumably had been exposed to high concentration free silica for almost 20 yr. this report is considered the first in korea to the best of our knowledge since no cases on silicosis could be reported in this occupation in reviewing various literature sources in kor...

global warming is claimed to be the cause of climate change, which is often held responsible for water shortage.  let geopedology represents the complex process of soil formation, out of which much can be learnt about paleoecology; soil formation being a dynamic interaction between the atmosphere, biosphere, lithosphere, and the hydrosphere. in a multidisciplinary sustainability-oriented study ...