Results 61 to 70 of about 3,583,136 (389)

Effects of arc bubble behaviors and characteristics on droplet transfer in underwater wet welding using in-situ imaging method

open access: yesMaterials & Design, 2019
The effects of arc bubble behaviors and characteristics on droplet transfer are observed with an in-situ X-ray imaging method. The changes in the force acting on the droplet are analyzed at three distinct stages of arc bubble in one life cycle.
Hao Chen   +5 more
doaj   +1 more source

On Maximum Evaporation Rates of Liquid Droplets in Rocket Motors [PDF]

open access: yes, 1953
Upper limits have been estimated for the rate of evaporation of small liquid droplets in representative rocket combustion chambers. The droplets are assumed to be isothermal at all times. The droplet temperature as a function of time is determined by an
Penner, S. S.
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

The strong influence of substrate conductivity on droplet evaporation [PDF]

open access: yes, 2009
We report the results of physical experiments that demonstrate the strong influence of the thermal conductivity of the substrate on the evaporation of a pinned droplet.
B. R. DUFFY   +15 more
core   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS 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

Problems in Welding of High Nitrogen Steel: A Review

open access: yesMetals, 2022
High nitrogen steel (HNS) has an excellent tensile strength and impact property due to the solid solution strengthening of nitrogen, which provides a good application prospect in many fields.
Lei Wang   +5 more
doaj   +1 more source

Nonlinear enthalpy transformation for transient convective phase change in Smoothed Particle Hydrodynamics (SPH)

open access: yes, 2022
A three-dimensional model is presented for the prediction of solidification behavior using a nonlinear transformation of the enthalpy equation in a Smoothed Particle Hydrodynamics (SPH) discretization.
Bussmann, Markus   +2 more
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS 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

Effects of Electrode Negative Pulsing Ratio in Direct Energy Deposition via Variable-Polarity Cold Metal Transfer Process on the Deposition Behavior and Microstructural Characteristics

open access: yesMetals, 2022
Interest in research on the application of variable-polarity cold metal transfer mode in wire-based direct energy deposition has been growing; particularly popular are investigations into the respective influences of polarity, amplitude of the arc ...
Tae Hyun Lee, Cheolhee Kim, Minjung Kang
doaj   +1 more source

Numerical Modeling of GMAW Arc [PDF]

open access: yes, 2005
© 2005 IEEE. Reprinted, with permission.A comprehensive model has been developed to simulate the transient, coupled transport phenomena occurring during a gas metal arc welding process.
Hu, Junling, Tsai, Hai-Lung, Wang, P.C.
core   +1 more source

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