Results 131 to 140 of about 335,919,253 (346)

Evaluating the influence of chemical composition and morphology of waxes on the fusion behaviour of rigid PVC

open access: yeseXPRESS Polymer Letters
A set of linear Fischer-Tropsch (FT) waxes were oxidized to various degrees by utilizing an ozonolysis method. These waxes were comprehensively characterized in terms of their chemical composition, thermal behaviour, molecular weight distributions, and ...
Johannes Lodewiekus Barnard   +2 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Collinear order in a frustrated three-dimensional spin-$\frac12$ antiferromagnet Li$_2$CuW$_2$O$_8$

open access: yes, 2015
Magnetic frustration in three dimensions (3D) manifests itself in the spin-$\frac12$ insulator Li$_2$CuW$_2$O$_8$. Density-functional band-structure calculations reveal a peculiar spin lattice built of triangular planes with frustrated interplane ...
Kasinathan, D.   +6 more
core   +1 more source

The Impact of Translation on Reading Comprehension for EST Learners - A Case Study of Computer Science Students at Constantine 2 University

open access: yesRevue des Sciences Humaines, 2019
We study the impact of introducing EST concepts for computer science learners through the use of translation. We have opted for the use of an on-the-fly translation, in which the teacher uses translation just to explain ambiguous terms or ideas related ...
Amer Draa
doaj  

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

Are regional stages necessary? [PDF]

open access: yes, 2005
The bipartition of the Carboniferous System adopted by the International Commission of Stratigraphy for the world stratigraphic chart is impractical in Gondwana.
Gonzalez, Carlos Roberto
core  

Observation of excess J/$\psi$ yield at very low transverse momenta in Au+Au collisions at $\sqrt{s_{\rm{NN}}} =$ 200 GeV and U+U collisions at $\sqrt{s_{\rm{NN}}} =$ 193 GeV

open access: yes, 2019
We report on the first measurements of J/$\psi$ production at very low transverse momentum ($p_{T}
STAR Collaboration
core   +1 more source

Terapia afecţiunilor osteoarticulare degenerative la câine [PDF]

open access: yesMedicamentul Veterinar, 2017
The degenerative joint disease, newly called osteoarthritis, is a common affection found in human and animal sectors. It is generally mentioned as a noninflammatory disease of articular cartilage the causes being represented by natural aging, traumas and
Bulai, Anca, Crivineanu, Maria
doaj  

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

Reduction of total harmonic distortion in power inverters [PDF]

open access: yes, 2005
The output voltage of PWM power inverters shows harmonic distortion due to several causes; the main ones are the modulation algorithm, nonlinearities in the output filter, dead times, voltage drops across the switches and modulation of the dc bus voltage.
Aymonino, Oscar Andres   +3 more
core  

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