Results 101 to 110 of about 800,105 (334)

Antonín Strnad (1746–1799) – the first professor of physical geography at Charles University in Prague

open access: yesActa Universitatis Carolinae Geographica, 2013
The paper is concerned with the life of Antonín Strnad (1746–1799), who became the outstanding representative of mathematics, astronomy and physical geography at the Artistic Faculty of Charles University in Prague.
Eva Novotná, Jan Kalvoda
doaj   +1 more source

Highly Efficient Platinum‐Free Photocatalytic Hydrogen Evolution From Low‐cost Conjugated Polymer Nanoparticles

open access: yesAdvanced Materials, EarlyView.
Platinum‐free hydrogen photocatalysis is achieved using dibenzothiophene‐S,S‐sulfoxide‐based conjugated polymers, self‐assembled into nanoparticles via nanoprecipitation. Through side chain engineering and donor–acceptor design, these materials reach a hydrogen evolution rate of 209 mmol g⁻¹ h⁻¹. The structure–function insights presented here establish
Alexandre Holmes   +11 more
wiley   +1 more source

Detector arrays for low-background space infrared astronomy [PDF]

open access: yes
The status of development and characterization tests of integrated infrared detector array technology for astronomy applications is described. The devices under development include intrinsic, extrinsic silicon, and extrinsic germanium detectors, with ...
Anderson, G. M.   +4 more
core   +1 more source

Multimessenger Universe with Gravitational Waves from Binaries [PDF]

open access: yes, 2019
Future GW detector networks and EM observatories will provide a unique opportunity to observe the most luminous events in the Universe involving matter in extreme environs.
Anand, Shreya   +11 more
core   +1 more source

Photothermal Boost of Laser‐Synthesized TiC Colloidal Variants with Engineered Solid‐State Interfaces and Nitridation

open access: yesAdvanced Materials, EarlyView.
TiC Colloidal variants are synthesized via a green and waste‐free laser fragmentation technique. The surface and elemental composition of the TiC colloids are tuned through laser‐induced carbon nucleation and nitridation while maintaining their crystal integrity. These changes maximize light–colloid interactions, thereby improving photo thermalization.
Farman Ullah   +5 more
wiley   +1 more source

De veranderende bestuurscultuur in wetenschap en universiteit in de jaren zeventig en tachtig

open access: yesBMGN: Low Countries Historical Review, 2014
Astronomy after Oort: The Changes in Administrative Culture in Science and the Universities in the 1970s and 1980s In the early 1970s Dutch universities were reformed, while scientific research was faced with new social and political demands.
David Baneke
doaj  

Report of the Science Working Group: Science with a lunar optical interferometer [PDF]

open access: yes
Resolution is the greatest constraint in observational astronomy. The Earth's atmosphere causes on optical image to blur to about 1 arcsec or greater.

core   +1 more source

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