Results 31 to 40 of about 940,941 (306)

Selectivity and Sociality: Aggression and Affiliation Shape Vole Social Relationships

open access: yesFrontiers in Behavioral Neuroscience, 2022
The formation of selective social relationships is not a requirement of group living; sociality can be supported by motivation for social interaction in the absence of preferences for specific individuals, and by tolerance in place of social motivation ...
Nicole S. Lee, Annaliese K. Beery
doaj   +1 more source

Serotonin and motherhood: From molecules to mood [PDF]

open access: yes, 2019
Emerging research points to a valuable role of the monoamine neurotransmitter, serotonin, in the display of maternal behaviors and reproduction-associated plasticity in the maternal brain.
Li, Ming   +2 more
core   +3 more sources

CONTRACTOR SELECTION FOR PERFORMANCE‐BASED MAINTENANCE PARTNERSHIPS

open access: yesInternational Journal of Strategic Property Management, 2007
Dutch housing associations use new procurement methods such as performance‐based maintenance partnerships for maintaining their housing stock. Such partnerships promise a range of advantages as compared to the traditional tendering of maintenance projects. For contractors a performance‐based approach implies major changes in methods and work processes.
Straub, Ab, Mossel, Henk-Jan van
openaire   +5 more sources

Selective Maintenance for a Multistate System Considering Energy Loss and Environmental Effect

open access: yesIEEE Access
With the increasing energy loss and environmental pollution caused by engineering systems, energy conservation and environmental protection have received more attention in industry environments.
Yao Sun, Jie Zhou, Zhili Sun, Zhe Wei
doaj   +1 more source

The Maintenance of Sex by Group Selection [PDF]

open access: yesEvolution, 1989
The traditional group-selection model for the maintenance of sex is based upon the assumption that the long-term evolutionary benefits of sexual reproduction result in asexual lineages having a higher extinction rate than sexual species. This model is reexamined, as is a related model that incorporates the possibility that sexual and asexual lines ...
openaire   +2 more sources

Metasurface‐inspired maintenance‐free Internet of things tags characterised in both frequency and time domains

open access: yesElectronics Letters, 2022
The authors present metasurface‐inspired maintenance‐free Internet of things (IoT) tags that can be characterised not only by frequency‐domain profiles but also by time‐domain profiles.
Masaya Tashiro   +4 more
doaj   +1 more source

Maize Germplasm Conservation in Southern California's Urban Gardens: Introduced Diversity Beyond ex situ and in situ Management. [PDF]

open access: yes, 2016
Contemporary germplasm conservation studies largely focus on ex situ and in situ management of diversity within centers of genetic diversity. Transnational migrants who transport and introduce landraces to new locations may catalyze a third type of ...
Ellstrand, Norman C, Heraty, Joanne M
core   +1 more source

Serial representation of items during working memory maintenance at letter-selective cortical sites. [PDF]

open access: yesPLoS Biology, 2018
A key component of working memory is the ability to remember multiple items simultaneously. To understand how the human brain maintains multiple items in memory, we examined direct brain recordings of neural oscillations from neurosurgical patients as ...
Ali Bahramisharif   +3 more
doaj   +1 more source

Selective Attention and Drug Related Attention Bias in Methadone Maintenance Patients [PDF]

open access: yesActa Medica Iranica, 2011
One of the main problems of the drug abusers is drug related attention bias, which causes craving, and as a result drive the drug abusers to take narcotics. Methadone is used as a maintenance treatment for drug abusers.
Majid Nejati   +2 more
doaj   +2 more sources

Costs of basic methods of forest landmaintenance in protective zones of high-voltage power lines in the Czech Republic

open access: yesJournal of Forest Science, 2010
: The paper describes the basic potential methods and their costs of maintenance of forest lands in protective zones under high-voltage power lines (HVPL) 400 kV and 220 kV.
L. Šišák
doaj   +1 more source

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