Results 31 to 40 of about 3,598 (237)

Field Study on the Application of Frost-suppression Air-Source Heat Pump Units

open access: yesZhileng xuebao, 2022
Frosting (especially severe frosting) in air-source heat pump (ASHP) units leads to a substantial decrease in operating performance. The development of frost-suppression ASHPs (FSASHPs) is key to ensuring their efficient application and healthy ...
梁士民   +4 more
doaj  

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Performance Improvement of Microchannel Heat Exchangers with Modified Louver Fins under Frosting Conditions

open access: yesApplied Sciences, 2023
Microchannel heat exchangers (MCHX) are increasingly being used in refrigeration and heat pumps due to their superior thermal-hydraulic properties. However, when the MCHX surface temperature drops below the freezing point, frost will accumulate on the ...
Tong Xiong, Guoqiang Liu, Gang Yan
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Analysis on frosting of heat exchanger and numerical simulation of heat transfer characteristics using BP neural network learning algorithm.

open access: yesPLoS ONE, 2021
The study is aimed at the frosting problem of the air source heat pump in the low temperature and high humidity environment, which reduces the service life of the system.
Bo Yu, Yuye Luo, Wenxiao Chu
doaj   +1 more source

Simulation study on frost formation characteristics on the surface of cold storage evaporator [PDF]

open access: yesJournal of Hebei University of Science and Technology
Aiming at the frosting problem of evaporators in cold storage leading to significant decrease in heat transfer efficiency and damage to the cold storage, based on the theory of heat and mass transfer, combined with actual cold storage data, a modified ...
Fuqing ZHANG, Ye YAO, Haiyan QU, Bo CUI
doaj   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Frosting of Vulcanized Rubber

open access: yes, 1939
Rubber products, like most commodities today, must meet the public demand for attractive appearance. Anything which damages the finish is a problem for the technical man.
W. F. Tuley
core   +1 more source

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