Lipopolysaccharide molecules released by the bacteria Vibrio fischeri when it rotates its flagella prompts its host, the Hawaiian bobtail squid, to prepare for its arrival.
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http://dx.doi.org/10.7554/eLife.02386 | DOI Listing |
J Clin Med
January 2025
Department of Cardiac Surgery, The Pope John Paul II Province Hospital of Zamość, 22-400 Zamosc, Poland.
Removal of spontaneously fractured leads with their proximal ends migrated into the vascular space has not been analysed in detail thus far. The study aimed to compare the effectiveness of different approaches and auxiliary tools for removing fractured leads with migrated proximal ends. Retrospective analysis of 72 cases from a database containing 3847 TLEs (transvenous lead extraction).
View Article and Find Full Text PDFBiomimetics (Basel)
December 2024
School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Birds use their claws to perch on branches, which helps them to recover energy and observe their surroundings; however, most biomimetic flapping-wing aircraft can only fly, not perch. This study was conducted on the basis of bionic principles to replicate birds' claw and wing movements in order to design a highly biomimetic flapping-wing aircraft capable of perching. First, a posture conversion module with a multi-motor hemispherical gear structure allows the aircraft to flap, twist, swing, and transition between its folded and unfolded states.
View Article and Find Full Text PDFChemistry
December 2024
Hiroshima University, Chemistry, 1-3-1 Kagamiyama, 739-8526, Higashi-Hiroshima, JAPAN.
The intermolecular host-guest complexation of head-to-tail monomers consisting of cleft-shaped bisporphyrin and trinitrofluorenone units connected by a chiral binaphthyl linker was employed to construct helically twisted supramolecular polymers. Results from 1H NMR, diffusion-ordered NMR spectroscopy, and viscometry experiments revealed that the supramolecular polymerization of these monomers follows a ring-chain competition mechanism. The introduction of bulky substituents at the linker significantly suppressed the formation of macrocyclic oligomers, whereas smaller alkyl chains facilitated the formation of the cyclic form.
View Article and Find Full Text PDFPhys Chem Chem Phys
December 2024
Department of Physics, National Institute of Technology, Bijni Complex, Laitumkhrah, Shillong, Meghalaya 793003, India.
This paper presents a novel prototype for human insulin detection using a 4-heptyl-4-biphenylcarbonitrile liquid crystal (7CB-LC). Human insulin is essential for regulating blood glucose levels and facilitating the metabolism of carbohydrates, lipids, and proteins. Insufficient insulin can lead to hyperglycemia, where cells cannot utilise glucose effectively for energy production.
View Article and Find Full Text PDFSci Robot
November 2024
School of Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland.
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