Contain complete substance information [e.g., (eco- toxicological eco- toxicologicalng in theffectsle, concentration range].
As KnowSEC is no standard substance information database but a knowledge system, the use of chemical properties in the form of measured values is mostly avoided.
The CAS registry [6] is the largest collection of disclosed chemical substance information and currently contains more than 55 million organic and inorganic compounds.
If substances registered according to REACH are classified differently by various notifiers, registrants should be participants in a substance information exchange forum (SIEF) with the aim to agree classification and labeling ([1] Art. 29(29).
Some companies have expressed concern about the substance information exchange forum (SIEF) process that grows out of pre-registering chemicals.
On the other hand, PCs could benefit from access to the substance information in the ECHA database (at the moment this information is only available for selected governmental authorities), and this possibility should be explored.
When materials are measured at the nanoscale they often have unique properties, some of which can be used in beneficial ways.Nanotechnology makes it possible to manufacture, on a tiny scale, new therapeutic substances carrying information on their surfaces that can be used to direct them to particular cells in the body.
A perfect hollow sphere is indeed a hermetic space, a passageway, which will enable the exchange of substances or information between the interior and exterior spaces, and is a key element for maximizing its advantages (such as large internal void and doubled surface area) in the practical applications, and even for the formation of hollow spheres.
Pesticides are another group of substances where information on active metabolites often is available.
Life is not possible without the exchange of substances and information between cells, therefore macro- and micro-organisms have developed efficient transport systems to control the molecular interaction processes within the colonized environment.
In the analysis of the subset of participants from whom we collected substance use information more than once, we found no clear evidence that heroin use increased more than decreased among substance using OEND participants.
