Results 1 to 10 of about 135,639 (97)

A mathematical function for the description of nutrient-response curve. [PDF]

open access: yesPLoS ONE, 2017
Several mathematical equations have been proposed to modeling nutrient-response curve for animal and human justified on the goodness of fit and/or on the biological mechanism.
Hamed Ahmadi
doaj   +1 more source

Non-bilaterians as Model Systems for Tissue Mechanics [PDF]

open access: yesIntegrative and Comparative Biology, 2023, 2023
In animals, epithelial tissues are barriers against the external environment, providing protection against biological, chemical, and physical damage. Depending on the animal's physiology and behavior, these tissues encounter different types of mechanical forces and need to provide a suitable adaptive response to ensure success. Therefore, understanding
arxiv   +1 more source

A Method for Modeling Growth of Organs and Transplants Based on the General Growth Law: Application to the Liver in Dogs and Humans [PDF]

open access: yesPLoS ONE 2014, 9(6): e99275, 2015
Understanding biological phenomena requires a systemic approach that incorporates different mechanisms acting on different spatial and temporal scales, since in organisms the workings of all components, such as organelles, cells, and organs interrelate.
arxiv   +1 more source

Modeling the lowest-cost splitting of a herd of cows by optimizing a cost function [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, volume 27, number 6, pages 063114, 2017, 2016
Animals live in groups to defend against predation and to obtain food. However, for some animals --- especially ones that spend long periods of time feeding --- there are costs if a group chooses to move on before their nutritional needs are satisfied. If the conflict between feeding and keeping up with a group becomes too large, it may be advantageous
arxiv   +1 more source

Contact-Free Simultaneous Sensing of Human Heart Rate and Canine Breathing Rate for Animal Assisted Interactions [PDF]

open access: yes, 2022
Animal Assisted Interventions (AAIs) involve pleasant interactions between humans and animals and can potentially benefit both types of participants. Research in this field may help to uncover universal insights about cross-species bonding, dynamic affect detection, and the influence of environmental factors on dyadic interactions. However, experiments
arxiv   +1 more source

An analysis of indifference curves and areas from a human nutrition perspective [PDF]

open access: yesarXiv, 2022
Through documentary research and interviews with nutrition experts, we found that all nutrients have two thresholds, the Recommended Daily Allowance (RDA) and the Tolerable Upper Intake Level (UL). Intake less than the RDA or more than the UL negatively affects health.
arxiv  

Evolution of adaptation mechanisms: adaptation energy, stress, and oscillating death [PDF]

open access: yesJournal of Theoretical Biology Volume 405, 21 September 2016, Pages 127-139, 2015
In 1938, H. Selye proposed the notion of adaptation energy and published "Experimental evidence supporting the conception of adaptation energy". Adaptation of an animal to different factors appears as the spending of one resource. Adaptation energy is a hypothetical extensive quantity spent for adaptation. This term causes much debate when one takes it
arxiv   +1 more source

The fluidic memristor: collective phenomena in elastohydrodynamic networks [PDF]

open access: yesarXiv, 2023
Fluid flow networks are ubiquitous and can be found in a broad range of contexts, from human-made systems such as water supply networks to living systems like animal and plant vasculature. In many cases, the elements forming these networks exhibit a highly non-linear pressure-flow relationship.
arxiv  

Empowering health in aging: Innovation in undernutrition detection and prevention through comprehensive monitoring [PDF]

open access: yesIADIS International Journal on Computer Science and Information Systems, 2023, 18 (2), pp.93-112, 2023
Addressing the health challenges faced by the aging population, particularly undernutrition, is of paramount importance, given the significant representation of older individuals in society. Undernutrition arises from a disbalance between nutritional intake and energy expenditure, making its diagnosis crucial.
arxiv  

Nutritional sub-fertility in the dairy cow: towards improved reproductive management through a better biological understanding

open access: yesAnimal, 2010
There has been a significant decline in the reproductive performance of dairy cattle in recent decades. Cows, take longer time to return to the oestrus after calving, have poorer conception rates, and show fewer signs of oestrus.
N.C. Friggens, C. Disenhaus, H.V. Petit
doaj  

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