Results 51 to 60 of about 806,520 (286)

The roles of sex, mass and individual specialisation in partitioning foraging-depth niches of a pursuit-diving predator [PDF]

open access: yes, 2013
Intra-specific foraging niche partitioning can arise due to gender differences or individual specialisation in behaviour or prey selection. These may in turn be related to sexual size dimorphism or individual variation in body size through allometry ...
Adlard, Stacey   +6 more
core   +2 more sources

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Reconciling Inter- and Intra-Individual Variation in L2 Socio-Pragmatic Development: Intensifier Variation in Spoken German

open access: yesLanguages
This study is the first to scrutinize the rates of, and the lexical diversity in, adjective intensification in second language (L2) German. We additionally attend to the issue concerning whether sociodemographic variables (i.e., length of residence, age,
Mason A. Wirtz
doaj   +1 more source

Intra-individual variation in resting metabolic rate during the menstrual cycle [PDF]

open access: yesBritish Journal of Nutrition, 2003
Little information exists on the extent of day-to-day intra-individual variation in resting metabolic rate (RMR) in women. The present study has investigated the intra-individual variation in RMR of women during the menstrual cycle. Nineteen women (naturally cycling non-pill users) were recruited to the study.
Henry, C, Lightowler, H, Marchini, J
openaire   +3 more sources

Chemical evolution of the intra-cluster medium [PDF]

open access: yes, 2003
The high metallicity of the intra-cluster medium (ICM) is generally interpreted on the base of the galactic wind scenario for elliptical galaxies. In this framework, we develop a toy-model to follow the chemical evolution of the ICM, formulated in ...
A. Moretti   +105 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Inter‐ and intra‐individual variation in the feather coloration of American crows

open access: yesJournal of Avian Biology
Avian feathers are remarkably diverse in both form and function. Coloration is among the most studied feature of feathers, but we know relatively little about melanin‐based black coloration.
Jessica L. Yorzinski, Anne B. Clark
doaj   +1 more source

Longitudinal variability of time-location/activity patterns of population at different ages: a longitudinal study in California

open access: yesEnvironmental Health, 2011
Background Longitudinal time-activity data are important for exposure modeling, since the extent to which short-term time-activity data represent long-term activity patterns is not well understood.
Cassady Diana L   +5 more
doaj   +1 more source

Microplastic exposure increases predictability of predator avoidance strategies in hermit crabs

open access: yesJournal of Hazardous Materials Letters, 2020
The contamination of natural systems with plastic debris has become one of the most pressing global environmental issues. Microplastics (MPs) are of particular concern because their ubiquity and small size make them available for ingestion by a range of ...
Gerrit B. Nanninga   +4 more
doaj   +1 more source

Growth, body composition and bone mineral density among pubertal male athletes: intra-individual 12-month changes and comparisons between soccer players and swimmers

open access: yesBMC Pediatrics, 2022
Background Puberty is a period of intense changes in human body and, additionally, participation in sports is viewed as prominent form of physical activity among male adolescent athletes.
Daniela C. Costa   +13 more
doaj   +1 more source

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