Based on their effects on substance P and norepinephrine release, progesterone was proposed to be a sigma antagonist, whereas dehydroepiandrosterone-3-sulphate (DHEA-S) and pregnenolone sulphate were considered as sigma agonists [ 13, 15].
After excluding these 149 journals, as well as 47 not included in the PubMed Medline database http://www.nlm.nih.gov/bsd/pmresources.html journals, 78 journals were retained for bibliometric analysis based on their coverage of chemical substances (Additional file 1).
The unit operations included in such a design space should be selected based on their impact on the drug substance CQAs.
In addition to the interview questions, a lesson scenario was posed to each teacher in which the teacher was asked to share his or her thoughts of how to plan an ideal inquiry-based lesson on the topic of having students classify substances based on their observable properties.
He gave these still-hypothetical elements names like "ekasilicon," "ekaaluminum" and "ekaboron," based on their expected similarities to known substances; the spaces were filled by germanium, gallium and scandium, respectively.
The device identifies substances based on their mass with the use of something called an ion tap.
The term 'nominal' refers to names or naming, and is used by Locke to indicate that classifying substances based on their similar qualities is an exercise in naming.
In response to the US EPA HPV Challenge Program, this study was conducted to: (1) evaluate the relationship between PAC content and the developmental toxicity of high-boiling petroleum substances (HBPS) and (2) develop mathematical models to predict the developmental toxicity of similar untested substances based on their aromatic ring class (ARC) profiles.
Our drug laws are absolutely fucking stupid we regulate substances based on their profitability and public esteem instead of their health and societal effects.
Terahertz spectroscopy is a technique allowing for the detection and identification of substances based on their chemical composition and in particular on their low energy vibration modes.
