compound n2, n3, n7, n8, 1, 4, 5, 6, 9, 10-decaphenyltetradecahydrodipyrazino [2, 3-b: 2, 3-e] pyrazine-2, 3, 7, 8-tetraamine (4) was prepared by condensation of 1, 1′, 2, 2′-tetrakis (phenylamino) ethane (1d) and glyoxal in etoh or i-proh. also, reaction of 1d with glyoxal in equimolare in etoh resulted 5,6-bis (ethoxy)-n2, n3, 1, 4-tetraphenylhexahydro-2, 3-pyrazinediamine (5). the natures of...

1 2 3 4 5 6 7 Feedback-dependent Generalization 8 Jordan A. Taylor, Laura L. Hieber, Richard B. Ivry 9 Department of Psychology, Princeton University 10 Department of Psychology, University of California, Berkeley 11 Helen Wills Neuroscience Institute, University of California, Berkeley 12 13 14 15 16 Corresponding Author: 17 Jordan A. Taylor 18 Department of Psychology 19 Princeton University ...

Google classroom is an application for online learning and teaching. The objective of this study was to find out the students’ perceptions on use google in writing activities at SMAN 3 Lubuklinggau. qualitative research method with a case design used study. participants were six students who obtained by using maximum variation sampling based teacher’s recommendation. interview thematic analysis...

the use of quantitative structure–activity relationships, since its advent, has becomeincreasingly helpful in understanding many aspects of biochemical interactions in drug research.this approach was utilized to explain the relationship of structure with biological activity ofantibacterial. for the development of new fungicides against, the quantitative structural–activityrelationship (qsar) an...