Results 81 to 90 of about 1,008,319 (276)

Experimental study of the aerodynamics of micro airfoils with wavy surface and the use of different patterns inspired by nature [PDF]

open access: yesفناوری در مهندسی هوافضا
Enhancing the aerodynamic performance of airfoils, minimizing drag, and controlling flow separation are key objectives in aerospace research, pursued through various methods.
Mehdi Abedi, Ramin Zakeri
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Improved Design for Horizontal Axis Wind Turbine Blades with Winglets

open access: yesPlatform, a Journal of Engineering, 2023
The horizontal axis wind turbine blades are modified to enhance the turbine's aerodynamic performance. The performance of the modified geometry was evaluated by comparing the lift, drag and torque findings to the same propeller with a
Hamza Ben Ahmadi   +5 more
doaj  

Estimation of unsteady lift on a pitching airfoil from wake velocity surveys [PDF]

open access: yes
The results of a joint experimental and computational study on the flowfield over a periodically pitched NACA0012 airfoil, and the resultant lift variation, are reported in this paper.
Panda, J.   +2 more
core   +1 more source

Air-cushion lift pad [PDF]

open access: yes, 1969
Mathematical model is formulated for an air pad which is capable of lifting a structure to a height of 0.125 inch. Design is superior to conventional air cushion devices because it eliminates flutter, vibration, heaving, and ...
Blaise, H. T., Dane, D. H.
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Musculoskeletal injuries among hospital patient care staff before and after implementation of patient lift and transfer equipment

open access: yesScandinavian Journal of Work, Environment & Health, 2013
OBJECTIVE: Using an observational research design and robust surveillance data, we evaluated rates of musculoskeletal (MS) injuries, days away from work, and restricted work days among patient care staff at a medical center and community hospital in the ...
Ashley L Schoenfisch   +4 more
doaj   +1 more source

Analysis of calculation results of lift and drag forces for several wings using nonlinear section data

open access: yesAviation, 2005
Calculation results for 11 different finite span wings are presented. Calculations were made by a combination of a numerical solution of lifting line theory with a technique developed to evaluate nonlinear section lift data.
Egidijus Pakalnis   +2 more
doaj   +1 more source

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