Results 91 to 100 of about 17,637,864 (191)

Photochemically responsive polymer films enable tunable gliding flights

open access: yesNature Communications
Miniaturized passive fliers based on smart materials face challenges in precise control of shape-morphing for aerodynamics and contactless modulation of diverse gliding modes.
Jianfeng Yang, M. Ravi Shankar, Hao Zeng
doaj   +1 more source

The Nature of Light [PDF]

open access: yesProceedings of the National Academy of Sciences, 1926
openaire   +2 more sources

On the nature of light

open access: yes
Electromagnetism is at the heart of the Standard Model, but despite all the successes of modern theory, our basic description of light traveling in free space remains unsatisfactory. The four bosons that compose light are introduced in a rather trivial way, simply by quantizing the (scalar and vector) potential amplitudes.
openaire   +2 more sources

Chiral Separation of Mandelic Acid Derivatives Using Various Permethylated Cyclodextrin Selectors Containing Stationary Phases in GC

open access: yesMolecules
A good chiral separation usually results in a trial-and-error process; however, through systematic studies, certain principles can be established to correlate structure with chiral selectivity.
Zoltan Juvancz   +5 more
doaj   +1 more source

Stateful-Service-Based Pupil Recognition in Natural Light Environments. [PDF]

open access: yesHealthcare (Basel), 2022
Ke RS, Horng GJ, Chen KT, Lee KC.
europepmc   +1 more source

Circadian phase advances in children during camping life according to the natural light-dark cycle. [PDF]

open access: yesJ Physiol Anthropol, 2022
Eto T   +9 more
europepmc   +1 more source

Bulletin of the American Museum of Natural History.

open access: yes, 1881
Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.Mode of access: Internet.Beginning with v. 23, information on anthropological matter continued in: Anthropological papers of the American Museum of Natural ...
American Museum of Natural History.
core  

Identification and driving mechanism of land use conflict in China’s South-North transition zone: A case study of Huaihe River Basin

open access: yesOpen Geosciences
Land use conflicts in China's south-north transition zone have become increasingly severe, posing significant challenges to regional planning and sustainable development.
Wang Hua   +6 more
doaj   +1 more source

Front Matter Jurnal Natural Vol 20 no 1, February 2020

open access: yes, 2020
Jurnal Natural, Editor   +1 more
core   +1 more source

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