منابع مشابه
Fibres of highly oriented Pf1 bacteriophage produced in a strong magnetic field.
Highly oriented fibres of the cylindrical bacteriophage Pfl have been produced by drying a concentrated solution in a magnetic field of 8 Tesla. Substantial improvement in the alignment of the phage parallel to the fibre axis is demonstrated by X-ray diffraction. This effect is due to the intrinsic diamagnetic aniso· tropy of the viruses and to their co·operative behaviour. The molecular struct...
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Graphene fibres are continuously prepared from universal graphene oxide precursors by a novel hydrogel-assisted spinning method. With assistance of a rolling process, meters of ribbon-like GFs, or GRs with improved conductivity, tensile strength, and a long-range ordered compact layer structure are successfully obtained. Furthermore, we refined our spinning process to obtained elastic GRs with ...
متن کاملElastic fibres.
Elastic fibres are essential extracellular matrix macromolecules comprising an elastin core surrounded by a mantle of fibrillin-rich microfibrils. They endow connective tissues such as blood vessels, lungs and skin with the critical properties of elasticity and resilience. The biology of elastic fibres is complex because they have multiple components, a tightly regulated developmental depositio...
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For any simple connected graph $G=(V,E)$, a defensive alliance is a subset $S$ of $V$ satisfying the condition that every vertex $vin S$ has at most one more neighbour in $V-S$ than it has in $S$. The minimum cardinality of any defensive alliance in $G$ is called the alliance number of $G$, denoted $a(G)$. In this paper, we introduce a new type of alliance number called $k$-strong alliance numb...
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ژورنال
عنوان ژورنال: Nature
سال: 1976
ISSN: 0028-0836,1476-4687
DOI: 10.1038/260391a0