Results 61 to 70 of about 2,501,315 (276)

Developing a survey instrument to evaluate tertiary chemistry students' attitudes and learning experiences [PDF]

open access: yes, 2001
New Zealand tertiary institutions, like others worldwide, have experienced a decline in science and chemistry enrolments in recent times as students seek other career paths that they perceive to be more lucrative.
Coll, Richard K.   +3 more
core   +1 more source

Prediction of forbidden ultraviolet and visible emissions in comet 67P/Churyumov-Gerasimenko

open access: yes, 2015
Remote observation of spectroscopic emissions is a potential tool for the identification and quantification of various species in comets. CO Cameron band (to trace \cod) and atomic oxygen emissions (to trace H$_2$O and/or CO$_2$, CO) have been used to ...
Bhardwaj, Anil   +2 more
core   +1 more source

The gulf between behavioural psychology and fundamental physiology: a systematic attempt to bridge the gap [PDF]

open access: yes, 2007
Direct experimentation in much of this area is very difficult or impossible. For such circumstances, it is argued that much can be achieved by a rigorous quantitative programme of interdisciplinary theorizing based on available data.
Traill, RR
core  

Metabolomic systems biology of trypanosomes [PDF]

open access: yes, 2010
Metabolomics analysis, which aims at the systematic identification and quantification of all metabolites in biological systems, is emerging as a powerful new tool to identify biomarkers of disease, report on cellular responses to environmental ...
BARBARA M. BAKKER   +4 more
core   +5 more sources

Autonomous propulsion of carbon nanotubes powered by a multienzyme ensemble [PDF]

open access: yes, 2008
Covalent attachment of the enzymes glucose oxidase and catalase to carbon nanotubes enables the tandem catalytic conversion of glucose and H2O2 formed to power autonomous movement of the nanotubes.
Browne, Wesley R.,   +2 more
core   +3 more sources

The Extraction of Community Structures from Publication Networks to Support Ethnographic Observations of Field Differences in Scientific Communication [PDF]

open access: yes, 2013
The scientific community of researchers in a research specialty is an important unit of analysis for understanding the field specific shaping of scientific communication practices. These scientific communities are, however, a challenging unit of analysis
Baus   +52 more
core   +2 more sources

Photocatalytic treatment of organic dyes using metal oxides and nanocomposites: A quantitative study

open access: yesOpen Chemistry
This comprehensive and quantitative research offers a thorough analysis of how metal oxides and nanocomposites are used in the photocatalytic treatment of organic dyes.
Khan Yousaf   +8 more
doaj   +1 more source

Application of Fourier transform infrared (FTIR) spectroscopy coupled with multivariate calibration for quantitative analysis of curcuminoid in tablet dosage form

open access: yesJournal of Applied Pharmaceutical Sciences, 2018
© 2018 Chairany Siregar et al. This is an open access article distributed under the terms of the Creative Commons Attribution License -NonCommercial-ShareAlikeUnported License (http://creativecommons.org/licenses/by-nc-sa/3.0/).
C. Siregar, S. Martono, A. Rohman
semanticscholar   +1 more source

The Use of Quantitative and Qualitative Analysis in the General Chemistry Laboratory [PDF]

open access: yes, 1959
Author Institution: California Institute of Technology, Pasadena ...
Swift, E. H.
core  

PERFIL DOS BOLSISTAS DE PRODUTIVIDADE EM PESQUISA NAS SUBÁREAS DA QUÍMICA DO CNPq

open access: yesQuímica Nova, 2016
The profile analysis of CNPq Research Productivity Fellows (PQ) in the four subfields of chemistry and in their respective specialties highlighted particularities with regard to the indicators related to the judging criteria established by the Chemistry ...
Lucilene F. O. Cândido   +2 more
doaj   +1 more source

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