Results 61 to 70 of about 1,250,119 (305)

Effect of Fire Extinguishing Agents on Compressive Strength and Splitting Tensile Strength of Concretes Exposed to High Temperatures [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
To study the influences of fire extinguishing agents on the mechanical performance of concretes after high temperatures, specimens of different curing ages were heated to different temperatures at 5 ℃/min and 10 ℃/min heating rates, and then they were ...
KUANG Yida, BIAN Huiting, ZHAO Jun, LI Xinzhe, ZHANG Lijuan, YAO Zhimin   +5 more
doaj   +1 more source

Effects of mass loss on the evolution of massive stars. II - Critical mass loss rates

The Astrophysical Journal, 1979
A critical mass-loss rate is discussed which, in the absence of binary mass transfer or extremely high mass-loss rates in the red-giant stage, determines whether a star will become a stripped core resembling a Wolf-Rayet star. Stars losing mass at this rate undergo two stages of /sup 14/N enhancement, and result in models resembling first WN and later ...
D. S. P. Dearborn, J. B. Blake
openaire   +1 more source

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

FEBS 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, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

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

FEBS 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, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

The Effect of Varying Mass Loss Rate on the Initial-Final Mass Relation of Massive Stars

, 2021
: Stellar mass loss has a high impact on the overall evolution of a star. The amount of mass lost during a star’s lifetime dictates which remnant will be left behind and how the circumstellar environment will be affected.

core  

Effect of edaphic silicon on the quality and postharvest of ‘Dorado’ peach (Prunus persica) fruits

Revista de Ciencias Agrícolas, 2023
In recent years, Colombia has seen an increase in the demand for peach fruits, but despite having adequate areas for peach production, neither production nor quality has increased because these fruits have a short post-harvest life and low firmness ...
Javier Giovanni Álvarez-Herrera, Julian Mauricio Molano-Diaz, Yenny Maritza Camacho-Torres   +2 more
doaj   +1 more source

Period – mass-loss rate relation of Miras with and without technetium [PDF]

Astronomy & Astrophysics, 2013
Aims: We report the discovery that Mira variables with and without absorption lines of the element technetium (Tc) occupy two different regions in a diagram of near- to mid-infrared colour versus pulsation period. Tc is an indicator of a recent or ongoing mixing event called the third dredge-up (3DUP), and the near- to mid-IR colour, such as the (K-[22]
openaire   +4 more sources

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

FEBS 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

Relative rate of mass loss in starved antlions.

, 2013
In both species, increased relative humidity decreased the rate of body mass loss of starved individuals (F1,67 = 22.46 ...
Einav Bar-Hanin (297163), Yehonatan Alcalay (297164), Ron Rotkopf (297161), Erez David Barkae (297162), Ofer Ovadia (177905)   +4 more
core   +1 more source

Relation of Observable Stellar Parameters to Mass-Loss Rate of AGB Stars in the LMC

, 2021
Mass loss in Asymptotic Giant Branch (AGB) stars has historically proven difficult to characterize accurately. This is due to a multitude of factors such as differing composition--including chemistry, metallicity, and differences in carbon and oxygen ...
Willson, Lee Anne, Prager, Henry, Marengo, Massimo, Creech-Eakman, Michelle J., Creech-Eakman, Michelle, Prager, Henry A.   +5 more
core   +1 more source