Results 131 to 140 of about 16,084,211 (343)
Social presence in virtual learning environments: Spanish adaptation of the Networked minds social presence measure [PDF]
, 2011 El objetivo de este trabajo es, por una parte, la adaptación al español de la Medida de la presencia social de las mentes en red (Networked Minds Social Presence Measure) de Harms & Biocca (2004) de 36 ítems, y en particular a entornos virtuales del ...
Agut, Sonia +3 more
core +1 more source
Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source
Co-presence Communities: Using pervasive computing to support weak social networks
, 2006 Although the strongest social relationships feature most prominently in our lives, we also maintain a multitude of much weaker connections: the distant colleagues that we share a coffee with in the afternoon; the waitress at a our regular sandwich bar ...
De Roure, David +2 more
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Examining the Reliability and Validity of a Turkish Version of the Community of Inquiry Survey
Online Learning, 2018 The aim of this study was to describe the validity and reliability of a Turkish language version of the CoI survey developed by Arbaugh et al. (2008). Adaptation of the survey into Turkish is described.
Yusuf Ziya OLPAK, Ebru KILIÇ ÇAKMAK
doaj +1 more source
FEBS Letters, EarlyView.Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang +5 more
wiley +1 more source
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
Social media presence: Live discussions on Twitter about the project, its results and events. The tweets will be collected and stored as a live story on Storify, which will be constantly updated throughout the project’s life span.
+10 more sources
Peptide‐based ligand antagonists block a Vibrio cholerae adhesin
FEBS Letters, EarlyView.The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang +9 more
wiley +1 more source
Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS Letters, EarlyView.Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani +4 more
wiley +1 more source
Aggregate Savings in the Presence of Private and Social Insurance [PDF]
In the presence of uncertain lifetimes, social security has the characteristics of an annuity: a consumer pays a tax when young in exchange for receiving a social security benefit if he survives to be old.
Andrew B. Abel
core