Results 81 to 90 of about 1,727,476 (300)

Light at Night, Shiftwork, and Breast Cancer Risk [PDF]

open access: yesJNCI Journal of the National Cancer Institute, 2001
Breast cancer is the most commonly diagnosed female noncutaneous cancer in the United States and in Europe. The etiology of breast cancer is primarily unknown, with an estimated one quarter of all breast cancers possibly due to heritable factors (1) and only a minor proportion possibly due to already established environmental risk factors, such as ...
openaire   +2 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

Pistes méthodologiques pour prendre en compte la pollution lumineuse dans les réseaux écologiques

open access: yesVertigO, 2017
In response to habitat fragmentation, scientific literature recommends ecological networks, which are natural areas interconnected structurally and functionally.
Romain Sordello
doaj   +1 more source

On light as an alerting stimulus at night

open access: yesActa Neurobiologiae Experimentalis, 2007
Light exposure at night increases alertness; however, it is not clear if light affects nocturnal alertness in the same way that it affects measures of circadian regulation. The purpose of this study was to determine if a previously established functional relationship between light and nocturnal melatonin suppression was the same as that relating light ...
Mariana G, Figueiro   +4 more
openaire   +2 more sources

Cities of culture and the regeneration game [PDF]

open access: yes, 2011
Capital of Culture (ECoC) programme exactly a year on from its inauguration. This event also saw the transition from Liverpool's "Year of Culture 08‟ to "Year of Environment 09" and a simultaneous event in the Austrian city of Linz to which the Capital ...
Evans, GL
core  

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro   +4 more
wiley   +1 more source

Reported light in the sleep environment: enhancement of the sleep diary. [PDF]

open access: yes, 2019
BackgroundLight is the primary synchronizing cue for the circadian timing system, capable of exerting robust physiological effects, even with very dim and/or brief photic exposure. Mammals, including humans, are particularly susceptible to light at night.
Ancoli-Israel, Sonia   +4 more
core  

Optimization of the Collection Efficiency of a Hexagonal Light Collector using Quadratic and Cubic B\'ezier Curves

open access: yes, 2012
Reflective light collectors with hexagonal entrance and exit apertures are frequently used in front of the focal-plane camera of a very-high-energy gamma-ray telescope to increase the collection efficiency of atmospheric Cherenkov photons and reduce the ...
Actis   +9 more
core   +1 more source

Emergence of Light‐Transforming Layered Hybrid Halide Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
The emerging class of light‐transforming layered halide perovskite materials is reviewed, outlining challenges for their development and perspectives toward application in the future. Abstract Layered hybrid halide perovskites (LHPs) have attracted considerable attention in optoelectronics.
Ghewa AlSabeh, Jovana V. Milić
wiley   +1 more source

Large‐scale human celebrations increase global light pollution

open access: yesPeople and Nature, 2023
Culturally dependent human social behaviours involving artificial light usage can potentially affect light pollution patterns and thereby impact the night‐time ecology in populated areas, although to date this has not been examined globally. By analysing
Francisco Ramírez   +7 more
doaj   +1 more source

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