Results 21 to 30 of about 958,468 (325)

Effect of timing and female quality on clutch size in the Collared Flycatcher Ficedula albicollis [PDF]

open access: yes, 2004
Capsule: Laying date and female age appear to be related to clutch size. Aims: To test two hypotheses ('date' and 'quality'), which might explain why fewer eggs are laid late in the season.
Garamszegi, László Zsolt   +2 more
core   +1 more source

Solution of Space-Time-Fractional Problem by Shehu Variational Iteration Method

open access: yesAdvances in Mathematical Physics, 2021
In this study, we deal with the problem of constructing semianalytical solution of mathematical problems including space-time-fractional linear and nonlinear differential equations. The method, called Shehu Variational Iteration Method (SVIM), applied in this study is a combination of Shehu transform (ST) and variational iteration method (VIM).
Suleyman Cetinkaya   +2 more
openaire   +4 more sources

Timing of perinatal death; causes, circumstances, and regional variations among reviewed deaths in Ethiopia.

open access: yesPLoS ONE, 2023
IntroductionEthiopia is one of the countries facing a very high burden of perinatal death in the world. Despite taking several measures to reduce the burden of stillbirth, the pace of decline was not that satisfactory.
Neamin Tesfay   +5 more
doaj   +1 more source

Effect of variation in sleep onset timing on simple visual reaction time in business process outsourcing employees of Hyderabad, Telangana

open access: yesNational Journal of Physiology, Pharmacy and Pharmacology, 2021
Background: From the past decade, changes in various dimensions of lifestyles of the individuals have become inevitable which is evident in sleep onset timing variation like never before.
Pradeep Reddy Srikaram   +2 more
doaj   +1 more source

A multi-modal study into students’ timing and learning regulation: time is ticking [PDF]

open access: yes, 2018
Purpose This empirical study aims to demonstrate how the combination of trace data derived from technology-enhanced learning environments and self-response survey data can contribute to the investigation of self-regulated learning processes. Design/
Nguyen, Quan   +2 more
core   +2 more sources

The Effects of Different Diets and Transgenerational Stress on Acyrthosiphon pisum Development. [PDF]

open access: yes, 2019
Despite the fact that sap-feeding hemipterans are major agricultural pests, little is known about the pea aphid's (Acyrthosiphon pisum) nymphal development, compared to other insect models. Given our limited understanding of A.
Hansen, Allison K, Pers, Daniel
core   +1 more source

The start of migration correlates with arrival timing, and the total speed of migration increases with migration distance in migratory songbirds: a cross-continental analysis

open access: yesMovement Ecology, 2019
Background Anthropogenic changes in the climate and environment have globally affected ecological processes such that the spatiotemporal occurrence of the main annual cycle events (i.e., breeding, wintering, moulting, and migration) has shifted in ...
Heiko Schmaljohann
doaj   +1 more source

What constitutes urgent endoscopy? A social media snapshot of gastroenterologists’ views during the COVID-19 pandemic

open access: yesEndoscopy International Open, 2020
Background and study aims There is a consensus among gastroenterology organizations that elective endoscopic procedures should be deferred during the COVID-19 pandemic.
Mohammad Bilal   +8 more
doaj   +1 more source

Contributions of temporal encodings of voicing, voicelessness, fundamental frequency, and amplitude variation to audiovisual and auditory speech perception [PDF]

open access: yes, 1999
Auditory and audio-visual speech perception was investigated using auditory signals of invariant spectral envelope that temporally encoded the presence of voiced and voiceless excitation, variations in amplitude envelope and F-0.
Andrew Faulkner   +11 more
core   +1 more source

Changes in microphytobenthos fluorescence over a tidal cycle: implications for sampling designs [PDF]

open access: yes, 2013
Intertidal microphytobenthos (MPB) are important primary producers and provide food for herbivores in soft sediments and on rocky shores. Methods of measuring MPB biomass that do not depend on the time of collection relative to the time of day or tidal ...
A. C. Jackson   +70 more
core   +1 more source

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