Results 141 to 150 of about 181,983 (371)

High‐Performance Low‐Emissivity Paints Enabled by N‐Doped Poly(benzodifurandione) (n‐PBDF) for Energy‐Efficient Buildings

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a scalable and colored low‐emissivity (low‐e) paint achieved by spraying an ultrathin n‐doped poly(benzodifurandione) (n‐PBDF) coating onto various colored substrates. The low‐e paint enhances thermal regulation by reducing mid‐infrared thermal emissivity to 0.19, thereby stabilizing indoor temperatures across diverse climates ...
Xiaojie Liu   +13 more
wiley   +1 more source

Optical-IUE observations of the gamma-ray loud BL Lacertae object S5 0716+714: data and interpretation [PDF]

open access: yesarXiv, 1997
We monitored the BL Lac object S5 0716+714 in the optical band during the period November 1994-April 1995, which includes the time of a gamma-ray observation by the Energetic Gamma Ray Experiment Telescope (EGRET) on February 14--28, 1995. The light curves in the R and B bands show fast fluctuations superimposed on longer timescale variations.
arxiv  

Could a nearby supernova explosion have caused a mass extinction?

open access: yes, 1993
We examine the possibility that a nearby supernova explosion could have caused one or more of the mass extinctions identified by palaeontologists.
Ellis, John, Schramm, David N.
core   +2 more sources

Unlocking High‐Performance in All‐Organic Solar Cells by the Development of Organic Electrodes with No Acid and High‐Temperature Treatment and the Effective Preparation Thereof on Organic Multilayer Films

open access: yesAdvanced Functional Materials, EarlyView.
The developed all‐organic solar cells achieve a power conversion efficiency of 8.7%, more than double the previous record. In addition, bioplastic substrates are used to produce environmentally friendly solar cells with an efficiency of 8.6%. These results are achieved by developing high‐performance organic electrodes without acid doping or high ...
Keiju Hashida   +12 more
wiley   +1 more source

Effectiveness of Gamma Ray and U.V Light on the Penecillin Resistant Strains of Staphylococcus aureus

open access: yesپزشکی بالینی ابن سینا, 2005
Nowadays, the multiple drug resistance and resistance to different antimicrobial are observed in a wide variety of bacteria. One of these agents is U.V. ray that sometimes used to sterilize the operation room space and utensils and gamma ray to sterilize
Roha Kasra Kermanshahi   +2 more
doaj  

Determining solar effects in Neptune’s atmosphere

open access: yesNature Communications, 2016
The causes behind fluctuations in Neptune's brightness as observed from Earth have proved enigmatic. Here, Aplin and Harrison use photometric observations to show that solar ultraviolet radiation and galactic cosmic rays combined are responsible for the ...
K. L. Aplin, R. G. Harrison
doaj   +1 more source

Apollo-Soyuz pamphlet no. 3: Sun, stars, in between [PDF]

open access: yes, 1977
The structure of the sun and its surface temperature and brightness are discussed as background for explaining the ASTP joint experiment to photograph the solar corona from Soyuz while the Apollo spacecraft created an artificial eclipse by blocking out ...
From, T. P., Page, L. W.
core   +1 more source

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