Results 61 to 70 of about 1,202,792 (286)

Ether and Relativity [PDF]

open access: yesInternational Journal of Theoretical Physics, 2015
21 ...
Mehrdad Farhoudi, Maysam Yousefian
openaire   +4 more sources

Ether and Electrons in Relativity Theory [PDF]

open access: yes, 2018
This chapter discusses the roles of ether and electrons in relativity theory. One of the most radical moves made by Albert Einstein was to dismiss the ether from electrodynamics.
Walter, Scott A.
core  

ETHER AND CHLOROFORM. [PDF]

open access: yesJournal of the American Medical Association, 1896
I am just now entering upon my fifth decade as a practitioner of medicine, and though it is a humiliating reflection, yet it is a fact, that what I learned of therapeutics during one of these epochs, I had to unlearn in the next, and that with all my delving among the resources of the materia medica, I can now count upon the fingers of both hands ...
openaire   +3 more sources

O conceito de "campo" em sala de aula: uma abordagem histórico-conceitual

open access: yesRevista Brasileira de Ensino de Física
O conceito de campo é uma das idéias fundamentais da física e pode motivar um rico debate em sala de aula sobre as noções básicas desta ciência. Apesar de sua importância, quando o mesmo é apresentado em sala de aula geralmente somente seus aspectos ...
José Fernando Moura Rocha
doaj   +1 more source

Ethereal Ethics

open access: yesPLoS Biology, 2004
In response to the Blackburn and Rowley essay on the President's Council on Bioethics, several thought-provoking opinions on ethical challenges in biomedical research are expressed by prominent ...
openaire   +5 more sources

Fate of Per- and Polyfluoroalkyl Ether Acids in the Total Oxidizable Precursor Assay and Implications for the Analysis of Impacted Water.

open access: yesEnvironmental Science and Technology Letters, 2019
Per- and polyfluoroalkyl substances (PFASs) are widely used anthropogenic chemicals. The PFAS class includes almost 5000 registered compounds, but analytical methods are lacking for most PFASs.
Chuhui Zhang   +4 more
semanticscholar   +1 more source

Crystal structure of pyriproxyfen

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound {systematic name: 4-phenoxyphenyl (RS)-2-[(pyridin-2-yl)oxy]propyl ether}, C20H19NO3, which is a juvenile hormone mimic and insecticide, the dihedral angles between the plane of the central benene ring and those of the pendant ...
Gihaeng Kang   +3 more
doaj   +1 more source

From classification medicine to clinical medicine (the end of the XVIII century - 1870s). Communication 5. Reforms in therapy in 1840s-1860s

open access: yesТерапевтический архив, 2012
Reforms of therapy in 1840-1860s are considered: development of the methods of objective assessment of efficacy of some methods of treatment, appearance of experimental pharmacology, introduction of anasthesia.
Andrey Mikhaylovich Stochik   +3 more
doaj  

Ultraviolet-induced Surface Grafting of Octafluoropentyl Methacrylate on Polyether Ether Ketone for Inducing Antibiofilm Properties [PDF]

open access: yes, 2017
Since octafluoropentyl methacrylate is an antifouling polymer, surface modification of polyether ether ketone with octafluoropentyl methacrylate is a practical approach to obtaining anti-biofilm biocompatible devices.
Amdjadi, Parisa   +7 more
core   +1 more source

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