Results 21 to 30 of about 29,478,974 (394)

Mathematical Analysis of a System for Biological Network Formation [PDF]

open access: yes, 2014
Motivated by recent physics papers describing rules for natural network formation, we study an elliptic-parabolic system of partial differential equations proposed by Hu and Cai.
Haskovec, Jan   +2 more
core   +6 more sources

Entropy Stress and Scaling of Vital Organs over Life Span Based on Allometric Laws

open access: yesEntropy, 2012
: Past theories on total lifetime energy expenditures and entropy generation in biological systems (BS) dealt with whole systems, but the recent literature suggests that the total metabolic rate of a BS,q̇body (W) is a sum of product of specific
Carlos Silva, Kalyan Annamalai
doaj   +1 more source

A treatment with a boiled aqueous extract of Hancornia speciosa Gomes leaves improves the metabolic status of streptozotocin-induced diabetic rats

open access: yesBMC Complementary Medicine and Therapies, 2020
Background Hancornia speciosa is usually used in Brazilian folk medicine to treat diabetes. The hypothesis of the present study is that this medicinal plant exerts beneficial effects on hyperglycemia, preventing diabetic complications. Therefore, the aim
Leila S. Neto   +9 more
doaj   +1 more source

Notes on a PDE System for Biological Network Formation [PDF]

open access: yes, 2015
We present new analytical and numerical results for the elliptic-parabolic system of partial differential equations proposed by Hu and Cai, which models the formation of biological transport networks.
Haskovec, Jan   +3 more
core   +4 more sources

Structural insights into inhibitory mechanism of human excitatory amino acid transporter EAAT2

open access: yesNature Communications, 2022
EAAT2 is an amino acid transporter implicated in glutamate homeostasis in brain and therapy resistance of cancer cells. Here, the authors report cryo-EM structures and reveal inhibitory mechanisms via selective inhibitor WAY213613.
Takafumi Kato   +12 more
doaj   +1 more source

Object Oriented Classification for Mapping Mixed and Pure Forest Stands Using Very-High Resolution Imagery

open access: yesRemote Sensing, 2021
The importance of mixed forests is increasingly recognized on a scientific level, due to their greater productivity and efficiency in resource use, compared to pure stands.
Loredana Oreti   +3 more
doaj   +1 more source

Designing biological systems [PDF]

open access: yesGenes & Development, 2007
The design of artificial biological systems and the understanding of their natural counterparts are key objectives of the emerging discipline of synthetic biology. Toward both ends, research in synthetic biology has primarily focused on the construction of simple devices, such as transcription-based oscillators and switches.
Pamela A. Silver   +2 more
openaire   +3 more sources

Bioinformatic Prediction of Non-Coding Genes related to the Mouse FGF8, NOG, and BMP4 Ectodermal Differentiation Pathway Genes and Mapping of Related Network

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām, 2022
Introduction: Long non-coding RNAs (lncRNAs) and miRNAs belong to a class of non-coding RNAs (ncRNAs) that play important roles and functions in the regulation of the expression of genes in main biological processes, such as cell proliferation, apoptosis,
Somayeh Moghaddam, Esmaeil Babaei
doaj  

Drunken lipid membranes, not drunken SNARE proteins, promote fusion in a model of neurotransmitter release

open access: yesFrontiers in Molecular Neuroscience, 2022
Alcohol affects many neuronal proteins that are upstream or down-stream of synaptic vesicle fusion and neurotransmitter release. Less well studied is alcohol’s effect on the fusion machinery including SNARE proteins and lipid membranes.
Robert E. Coffman   +6 more
doaj   +1 more source

Evaluation of C. perfringens cpe-positive Strain as a Source Tracking Indicator of Human Contamination in Freshwater Environments

open access: yesJournal of Water and Environment Technology, 2021
In this study, a field survey of fecal contamination indicators and Clostridium perfringens cpe(+) in river environments was conducted to verify the effectiveness of C.
Hiroyuki Suzuki   +2 more
doaj   +1 more source

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