Results 11 to 20 of about 767,308 (202)

The Effect of Biology Teaching Materials on the Academic Performance of Senior Secondary School Students in Ilorin West, Ilorin, Kwara State

open access: yesInternational Journal of Educational Innovation and Research, 2023
This study examined the impact of Biology instructional materials on the academic performance of senior secondary school students in Ilorin West LGA, Kwara State, Nigeria.
Florence Omosholape Abidoye   +2 more
doaj   +1 more source

An Effective Sign Switching Dark Energy: Lotka–Volterra Model of Two Interacting Fluids

open access: yesUniverse, 2023
One of the recent attempts to address the Hubble and S8 tensions is to consider that the Universe started out not as a de Sitter-like spacetime, but rather anti-de Sitter-like. That is, the Universe underwent an “AdS-to-dS” transition at some point.
Yen Chin Ong
doaj   +1 more source

iGEM 2021: A Year in Review

open access: yesBioDesign Research, 2022
The international Genetically Engineered Machine (iGEM) Foundation has continued to promote synthetic biology education throughout its 2021 competition.
Hannah Moon
doaj   +1 more source

The Current Biology Photomicrography Competition [PDF]

open access: yesCurrent Biology, 2000
This image of a rat retina is the winning entry in this year’s Current Biology Photomicrography Competition. It was produced by Werner Zuschratter at the Leibniz Institute for Neurobiology in Magdeburg, Germany.The retrogradely traced ganglion cells — cell bodies, dendrites and axons — are coloured in yellow.
openaire   +2 more sources

‘Can Simple Biological Systems be Built from Standardized Interchangeable Parts?’:Negotiating Biology and Engineering in a Synthetic Biology Competition [PDF]

open access: yes, 2013
Synthetic biology represents a recent attempt to bring engineering principles and practices to working with biology. In practice, the nature of the relationship between engineering and biology in synthetic biology is a subject of ongoing debate.
Calvert, Jane, Frow, Emma
core   +1 more source

The evolution of sperm morphometry in pheasants [PDF]

open access: yes, 2007
Postcopulatory sexual selection is thought to be a potent evolutionary force driving the diversification of sperm shape and function across species. In birds, insemination and fertilisation are separated in time and sperm storage increases the duration
Birkhead, T.R.   +5 more
core   +3 more sources

US Competitiveness in Synthetic Biology [PDF]

open access: yesHealth Security, 2015
Synthetic biology is an emerging technical field that aims to make biology easier to engineer; the field has applications in strategically important sectors for the US economy. While the United States currently leads in synthetic biology R&D, other nations are heavily investing in order to boost their economies, which will inevitably diminish the US ...
openaire   +2 more sources

Recent Progress in European Advanced Therapy Medicinal Products and Beyond

open access: yesFrontiers in Bioengineering and Biotechnology, 2018
Cell- and gene-based therapies form one of the pillars of regenerative medicine. They have the potential to transform quality of life and improve the health status of patients with genetic and cellular defects, including genetic diseases ...
Tracy T. L. Yu   +6 more
doaj   +1 more source

Modeling viral coevolution: HIV multi-clonal persistence and competition dynamics [PDF]

open access: yes, 2005
The coexistence of different viral strains (quasispecies) within the same host are nowadays observed for a growing number of viruses, most notably HIV, Marburg and Ebola, but the conditions for the formation and survival of new strains have not yet been ...
Altfeld   +43 more
core   +2 more sources

Single Cell Biology: Exploring Somatic Cell Behaviors, Competition and Selection in Chronic Disease

open access: yesFrontiers in Pharmacology, 2022
The full range of cell functions is under-determined in most human diseases. The evidence that somatic cell competition and clonal imbalance play a role in non-neoplastic chronic disease reveal a need for a dedicated effort to explore single cell ...
Wandi Zhu, Rahul C. Deo, Calum A. MacRae
doaj   +1 more source

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