Results 51 to 60 of about 125,081 (296)

Using Clickers to Collect Formative Feedback on Teaching: A Tool for Faculty Development

open access: yesInternational Journal for the Scholarship of Teaching and Learning, 2014
Incorporation of clicker technology in an introductory chemistry class is described as a method for collecting and automatically tabulating student feedback for use in formative faculty development. Students are polled in real-time on issues of classroom
Erica Gunn
doaj   +1 more source

Mechanisms of light harvesting by photosystem II in plants

open access: yes, 2015
Light harvesting by photosystem II (PSII) in plants is highly efficient and acclimates to rapid changes in the intensity of sunlight. However, the mechanisms of PSII light harvesting have remained experimentally inaccessible.
Amarnath, Kapil   +3 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Anharmonic force field and vibrational frequencies of tetrafluoromethane (CF$_4$) and tetrafluorosilane (SiF$_4$) [PDF]

open access: yes, 1999
Accurate quartic anharmonic force fields for CF$_4$ and SiF$_4$ have been calculated using the CCSD(T) method and basis sets of $spdf$ quality. Based on the {\it ab initio} force field with a minor empirical adjustment, the vibrational energy levels of ...
Edwin L. Sibert   +4 more
core   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Including detailed chemistry features in the modeling of emerging low-temperature reactive flows: A review on the application to diluted and MILD combustion systems

open access: yesApplications in Energy and Combustion Science
Developing and optimizing new reactive systems with carbon-neutral fuels like biofuels, e-fuel, hydrogen, or ammonia is crucial for sustainable energy.
Giancarlo Sorrentino   +3 more
doaj   +1 more source

Analysis of Local Exergy Losses in Combustion Systems Using a Hybrid Filtered Eulerian Stochastic Field Coupled with Detailed Chemistry Tabulation: Cases of Flames D and E

open access: yesEnergies, 2021
A second law analysis in combustion systems is performed along with an exergy loss study by quantifying the entropy generation sources using, for the first time, three different approaches: a classical-thermodynamics-based approach, a novel turbulence ...
Senda Agrebi   +5 more
doaj   +1 more source

Detection of OD towards the low-mass protostar IRAS16293-2422

open access: yes, 2012
Although water is an essential and widespread molecule in star-forming regions, its chemical formation pathways are still not very well constrained. Observing the level of deuterium fractionation of OH, a radical involved in the water chemical network ...
Belloche, A.   +8 more
core   +1 more source

Intramolecular pi-pi stacking interactions in 2-substituted N,N-dibenzylaziridinium ions and their regioselectivity in nucleophilic ring-opening reactions [PDF]

open access: yes, 2009
The ring opening of 2-substituted N,N-dibenzylaziridinium ions by bromide is known to occur exclusively at the Substituted aziridine carbon atom via ail S(N)2 mechanism, whereas the opposite regioselectivity has been observed as the main pathway for ring
Catak, Saron   +4 more
core   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

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