Results 71 to 80 of about 1,918,733 (356)

Mass Loss and Shell Masses of Close Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1987
AbstractFrom the values of period changes for 6 close binary stars the mass transfer rate was calculated. Comparing these values Mt with the values of shell masses Msh, the expressionwas derived. The analysis of this expression points out the initial character of the outflow of matter, and one may determine the time interval of the substitution of the ...
openaire   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Determination of degradation level during cavitation erosion of zircon based ceramic [PDF]

open access: yesScience of Sintering, 2017
Mechanical shock of zircon based ceramic induced by cavitation erosion testing was investigated in this study. Several parameters were followed in order to determine level of material degradation during the cavitation erosion testing.
Pavlović Marko   +6 more
doaj   +1 more source

Evolutionary effects of mass loss in low-mass stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1981
AbstractThe effects of mass loss on the evolution of low-mass stars (actual mass smaller than 1.4 Mʘ) are reviewed. The case of globular cluster stars is discussed in some detail, and it is shown that evolutionary theory sets quite precise limits to the mass-loss rate in population II red giants.
openaire   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Effects of light intensity on litter decomposition in a subtropical region

open access: yesEcosphere, 2017
Sunlight, as a main driver of terrestrial ecosystem process, not only runs the synthesis, but also the decomposition. In nature, soil surface might be exposed to different light intensities, but the decomposition as affected by light intensity remains ...
Zhiliang Ma   +3 more
doaj   +1 more source

Pack Boronizing of P110 Oil Casing Tube Steel to Combat Wear and Corrosion

open access: yesInternational Journal of Electrochemical Science, 2015
In the present work, boronizing coating was produced by pack cementation to improve the surface performance and increase the usage lifetime of P110 oil casing tube steel during operation.
Naiming Lin   +8 more
doaj   +1 more source

Introducing an Improved GRACE Global Point-Mass Solution—A Case Study in Antarctica

open access: yesRemote Sensing, 2020
In the so-called point-mass modeling, surface densities are represented by point masses, providing only an approximated solution of the surface integral for the gravitational potential.
Vagner G. Ferreira   +4 more
doaj   +1 more source

Mass conservation and rapid mass loss on the main sequence [PDF]

open access: yesSymposium - International Astronomical Union, 1979
The rapid mass loss observed in O stars can affect their evolution dramatically if it takes place during core hydrogen burning on the main sequence. Conti has suggested that this is the case for the brightest Of stars, and that these stars evolve into Wolf-Rayet (WR) stars.
openaire   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

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