Studying propulsion mechanisms in low Reynolds number fluid has implications for many fields, ranging from the biology of motile microorganisms and the physics of active matter to micromixing in catalysis and micro- and nanorobotics. The propulsion of magnetic micropropellers can be characterized by a dimensionless speed, which solely depends on the propeller geometry for a given axis of rotati...

Protein engineering of the beta-propeller protein aimed at enhancing the structural stability of the protein was carried out using a monomeric single domain beta-propeller protein, Salmonella typhimurium sialidase, as a model. Ala53 and Ala69 each located at strands B and C of the W1 motif were mutated to Leu and Val, respectively, to increase the hydrophobic interaction between W1 and W6 motif...

We have studied the folding during biosynthesis of the lymphocyte function-associated antigen 1 (LFA-1) aL subunit using mAb to epitopes that map to seven different regions within the amino acid sequence. The N-terminal portion of aL is predicted to contain a b-propeller domain, consisting of seven b-sheets, and an I domain that is predicted to be inserted between b-sheet 2 and b-sheet 3 of the...

The propeller is an important load of the ship. can overcome resistance ship through control propulsion motor to speed and direction relationship between interaction suffered by during navigation very complex, many factors will affect movement propeller, so it select a suitable mathematical model propeller. In this paper, modeling simplified properly, calculation improved on basis ensuring simu...

Introduction Short-axis and long-axis PROPELLER echo planar imaging (referred to as SAP-EPI and LAP-EPI, respectively) [1, 2] have been developed as alternatives to fast spin echo (FSE)-based PROPELLER sequences [3]. EPI-PROPELLER typically requires fewer shots than FSE-PROPELLER, and is less SAR-intensive. Like other EPI sequences, however, both SAPand LAP-EPI are sensitive to eddy currents th...

The crystal structure of the synthetic DNA dodecamer CGCATATATGCG has been solved at 2.2-A resolution. Its central 6 base pairs adopt the alternating-B-DNA helix structure proposed nearly a decade ago. This alternating poly(AT) structure contrasts with the four known examples of what can be termed a poly(A) subfamily of B-DNA structures: CGCAAAAAAGCG, CGCAAATTTGCG, CGCGAATTCGCG, and CGCGAATTbrC...

INTROdUCTION: The concept of freestyle propeller flaps provides a versatile opportunity for wound closure at any part of the body with minimal donor site morbidity. As experience and familiarity with microsurgical procedures has increased interest in identifying-harvesting perforator flaps originating from known major vessels has become more common. The “freestyle” concept developed by Wei and ...