Results 81 to 90 of about 29,239 (203)

Photovoltaic System For Supplying Public Lighting As Peak Demand Shaving

open access: yesEletrônica de Potência, 2007
This paper describes the design and implementation of a grid connected photovoltaic system aimed to supply energy to the public lighting during the time of high peak demand of the grid. The system is made of two main parts: the solar energy storage unit
Edilson Mineiro Sá Jr.   +5 more
doaj   +1 more source

What's Wrong With Self‐Censorship?

open access: yesPhilosophy &Public Affairs, EarlyView.
ABSTRACT In recent years, discourse on freedom of speech has shifted away from exclusive focus on the state and towards societal threats to speech. Amidst this change, the notion of “self‐censorship” has gained increased prominence. Not only has self‐censorship emerged as a common reference point, several recent studies identify it as embodying a ...
Gideon Elford
wiley   +1 more source

Continuous surface wave and impact methods of measuring the stiffness and density of railway ballast

open access: yes, 2002
Continuous surface wave and transient impact excitation tests were performed on strips of ballast to monitor their compaction. The ballast's shear wave velocity, hence the ratio of its shear modulus and density, increased with depth.
Zagyapan, M, Fairfield, C.A
core   +1 more source

Community structure of benthic macroinvertebrates in reclaimed and natural tidal flats of the Yangtze River estuary

open access: yesAquaculture and Fisheries, 2019
Previous studies have found differences between communities of benthic macroinvertebrates living in constructed tidal flats compared with natural ones.
Junzeng Xue   +4 more
doaj   +1 more source

The downward legacy of a phytoplankton bloom in the oligotrophic North Pacific Subtropical Gyre

open access: yesLimnology and Oceanography, Volume 71, Issue 10, October 2026.
Abstract Ocean particles are a heterogeneous collection, including living and dead cells, feces, mucus‐rich aggregates, and mineral shells and frustules. In the well‐lit upper ocean, phototrophic processes fuel production of particulate matter; however, only a relatively small percentage (< 10% per day) of this material (mostly detrital) escapes the ...
Angelicque E. White   +21 more
wiley   +1 more source

Exploration of Alkaliphilic Bacteria Alkalitalea saponilacus Identifies Glycoside Hydrolases With Biotechnological Potential. [PDF]

open access: yesMicrob Biotechnol
Soda lakes represent an excellent resource in the search for microbes adapted to alkaline and hypersaline conditions. In this study we demonstrate the ability of Alkalitalea saponilacus to degrade multiple carbon sources representing a promising bacterium for biotechnological applications where performance under alkaline or strongly ionic conditions is
Stephen A   +9 more
europepmc   +2 more sources

The Last Line

open access: yes
Critical Quarterly, EarlyView.
Beci Carver
wiley   +1 more source

Community Awareness and Evidence of Dugong (Dugong dugon) Presence in Anjouan, Comoros

open access: yesMarine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The dugong (Dugong dugon), listed as Vulnerable globally, is poorly documented in the Western Indian Ocean, including the Comoros. We combined Local Ecological Knowledge (LEK) and Passive Acoustic Monitoring (PAM) to assess occurrence and reported encounters around the island of Anjouan.
Rihana Ali Ahmed   +7 more
wiley   +1 more source

Where is mineral ballast important for surface export of particulate organic carbon in the ocean? [PDF]

open access: yes, 2014
Correlations between particulate organic carbon (POC) and mineral fluxes in the deep ocean have inspired the inclusion of ‘ballast effect’ parameterizations in carbon cycle models. A recent study demonstrated regional variability in the effect of ballast
Patrick Martin   +13 more
core   +1 more source

Track Bed Gaps Impact on Ballast Particle Surrounding Flow Field and Aerodynamic Forces for High-speed Railways before and after Ballast Splashing

open access: yesChengshi guidao jiaotong yanjiu
[Objective] When high-speed trains operate on ballasted tracks, the complex airflow field around ballast particles can lead to track ballast splashing. The formation mechanism of this phenomenon remains unclear.
WANG Jiankai   +3 more
doaj   +1 more source

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