Results 81 to 90 of about 287,472 (366)

Insulin or insulin-like studies on unicellular organisms: a review

open access: yesBrazilian Archives of Biology and Technology, 2004
This paper presents a review of studies about insulin and insulin-like substances in prokaryotes, eukaryotes and fungi have been published over the last two decades, constituting an updating of our previous review (1988) which included references to ...
Alzira Martins Ferreira de Souza   +1 more
doaj   +1 more source

Delayed Logistic and Rosenzweig - MacArthur Models with Allometric Parameter Setting Estimate Population Cycles Well [PDF]

open access: yesEcological Complexity 9 (2012), 2009
Context. So far, theoretical explanations for body-size patterns in periodic population dynamics have received little attention. In particular, tuning and testing of allometric models on empirical data and regressions has not been carried out yet. Here, oscillations expected from a one-species (delayed logistic) and a two-species (Rosenzweig-MacArthur)
arxiv   +1 more source

The influence of nutrient concentration on algal biomass and invertebrate communities in agricultural streams : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2003
High nutrient inputs have generally been identified as responsible for the degradation of lowland rivers and lakes in New Zealand and internationally. Nutrients have been shown to influence algal community growth rate and composition.
Hamer, Mark Peter
core  

Self‐Propelled In Situ Polymerized Nanoparticles Activating the STING Pathway for Enhanced Bladder Cancer Immunotherapy

open access: yesAdvanced Science, EarlyView.
A self‐propelled nanomedicine delivery system forms DMCU nanoparticles in the bladder via in situ polymerization of dopamine hydrochloride, Mn2+, cGAMP, and urease. The urease‐driven propulsion enhances retention and drug delivery. These nanoparticles activate the STING pathway, stimulating dendritic cells and T cells to boost anti‐bladder cancer ...
Lei Peng   +9 more
wiley   +1 more source

Traceability of Agri‐Food Products: The Key to Conscious Trade

open access: yesAgribusiness, EarlyView.
ABSTRACT Globalization and growing concerns about sustainability have led to improvements in product traceability, quality, and sustainability. Traceability contributes to environmental protection and supports sustainable development by fostering transparency in agricultural practices and encouraging the responsible use of resources.
Scarlett Queen Almeida Bispo   +5 more
wiley   +1 more source

Social Insects and Beyond: The Physics of Soft, Dense Invertebrate Aggregations [PDF]

open access: yesarXiv, 2022
Aggregation is a common behavior by which groups of organisms arrange into cohesive groups. Whether suspended in the air (like honey bee clusters), built on the ground (such as army ant bridges), or immersed in water (such as sludge worm blobs), these collectives serve a multitude of biological functions, from protection against predation to the ...
arxiv  

iDNA from terrestrial haematophagous leeches as a wildlife surveying and monitoring tool - prospects, pitfalls and avenues to be developed [PDF]

open access: yes, 2015
Invertebrate-derived DNA (iDNA) from terrestrial haematophagous leeches has recently been proposed as a powerful non-invasive tool with which to detect vertebrate species and thus to survey their populations.
Calvignac-Spencer, Sebastien   +6 more
core   +4 more sources

Targeted next‐generation sequencing of environmental DNA improves detection of invasive European green crab (Carcinus maenas)

open access: yesEnvironmental DNA, 2022
In the northeast Pacific Ocean, there is high interest in developing eDNA‐based survey methods to aid management of invasive populations of European green crab (Carcinus maenas). Expected benefits are improved sensitivity for early detection of secondary
Kristen Marie Westfall   +2 more
doaj   +1 more source

Cognition in Invertebrates [PDF]

open access: yes, 2007
Cognition is an integrating process that utilizes phylogenetic and individual memory, creates an internal representation of the world and a basis for expecting the future of the animal’s own actions within the experienced environment. It thus allows the animal to decide between different options in reference to the expected outcome of its potential ...
Menzel, R., Brembs, Björn, Giurfa, M.
openaire   +2 more sources

Bioinspired Cationic Antimicrobial Polymers

open access: yesAngewandte Chemie International Edition, EarlyView.
A review about membrane active cationic polymers with antimicrobial properties. A focus is laid on polymeric architecture, stimuli‐responsive antimicrobial polymers, as well as synergistic effects of polymers, and other compounds. Abstract Antibiotics are an essential tool of modern medicine, which is critically endangered by the spread of ...
Heliya Javadi   +2 more
wiley   +1 more source

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