Results 51 to 60 of about 7,880,129 (337)

Hydrogen bonding as a clustering agent in protic ionic liquids: like-charge vs opposite-charge dimer formation [PDF]

open access: yes, 2018
The local structure of a series of homologous protic ionic liquids (PILs) is investigated using ab initio computations and ab initio-based molecular dynamics. The purpose of this work is to show that in PILs the network of hydrogen bonds may promote like-
Adenusi, Henry   +3 more
core   +3 more sources

Functional and Genomic Variation between Human-Derived Isolates of Lachnospiraceae Reveals Inter- and Intra-Species Diversity.

open access: yesCell Host and Microbe, 2020
Bacteria belonging to the Lachnospiraceae family are abundant, obligate anaerobic members of the microbiota in healthy humans. Lachnospiraceae impact their hosts by producing short-chain fatty acids, converting primary to secondary bile acids, and ...
Matthew T. Sorbara   +9 more
semanticscholar   +1 more source

Variational method for 1D spin chains [PDF]

open access: yesJournal of Physics C: Solid State Physics, 1985
The author reports on a new variational method for determining the ground state energy of antiferromagnetic Heisenberg spin chains with nearest-neighbour interaction. The method enables one to extrapolate to the exact energy and it is shown that the first few approximations give better results than other approximate methods.
openaire   +1 more source

Total variation cutoff in birth-and-death chains [PDF]

open access: yesProbability Theory and Related Fields, 2008
25 ...
Ding, Jian, Lubetzky, Eyal, Peres, Yuval
openaire   +2 more sources

International Variation in Criteria for Internal Mammary Chain Radiotherapy [PDF]

open access: yesClinical Oncology, 2019
Evidence has emerged that internal mammary chain (IMC) radiotherapy reduces breast cancer mortality, leading to changes in treatment guidelines. This study investigated current IMC radiotherapy criteria and the percentages of patients irradiated for breast cancer in England who fulfilled them.A systematic search was undertaken for national guidelines ...
Duane, F   +10 more
openaire   +3 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Experimental Observation of Resonance-Assisted Tunneling

open access: yes, 2015
We present the first experimental observation of resonance-assisted tunneling, a wave phenomenon, where regular-to-chaotic tunneling is strongly enhanced by the presence of a classical nonlinear resonance chain. For this we use a microwave cavity made of
Bäcker, Arnd   +6 more
core   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Application of nitrogen and carbon stable isotopes (δ(15)N and δ(13)C) to quantify food chain length and trophic structure.

open access: yesPLoS ONE, 2014
Increasingly, stable isotope ratios of nitrogen (δ(15)N) and carbon (δ(13)C) are used to quantify trophic structure, though relatively few studies have tested accuracy of isotopic structural measures.
Matthew J Perkins   +5 more
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

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