12,168 research outputs found
Interconnecting bilayer networks
A typical complex system should be described by a supernetwork or a network
of networks, in which the networks are coupled to some other networks. As the
first step to understanding the complex systems on such more systematic level,
scientists studied interdependent multilayer networks. In this letter, we
introduce a new kind of interdependent multilayer networks, i.e.,
interconnecting networks, for which the component networks are coupled each
other by sharing some common nodes. Based on the empirical investigations, we
revealed a common feature of such interconnecting networks, namely, the
networks with smaller averaged topological differences of the interconnecting
nodes tend to share more nodes. A very simple node sharing mechanism is
proposed to analytically explain the observed feature of the interconnecting
networks.Comment: 9 page
Research on the Digital Workshop Layout Based on Steel Material Processing Workshop
AbstractAiming at the layout optimization of the steel structure machining workshop in modern ship manufacturing industry, a digital optimum solution is proposed. First optimize the production flow and enterprise resources and build the 3D visual parametric model. Second using optimization algorithm build the optimum layout model. Third apply estimation method on the optimum model. As for the initial layout plan, build the layout optimum model using the Improved Genetic Algorithm, and find out the minimization solution of the optimum. This paper is helpful for the digital manufacture workshop's layout optimization research
Entropy Function and Universality of Entropy-Area Relation for Small Black Holes
We discuss the entropy-area relation for the small black holes with higher
curvature corrections by using the entropy function formalism and field
redefinition method. We show that the entropy of small black hole is
proportional to its horizon area . In particular we find a universal result
that , the ratio is two times of Bekenstein-Hawking entropy-area
formula in many cases of physical interest. In four dimensions, the universal
relation is always true irrespective of the coefficients of the higher-order
terms if the dilaton couplings are the same, which is the case for string
effective theory, while in five dimensions, the relation again holds
irrespective of the overall coefficient if the higher-order corrections are in
the GB combination. We also discuss how this result generalizes to known
physically interesting cases with Lovelock correction terms in various
dimensions, and possible implications of the universal relation.Comment: minor corrections, a ref. adde
Resistance imparted by vitamin C, vitamin e and vitamin B12 to the acute hepatic glycogen change in rats caused by noise.
The effects of vitamin C, vitamin E and vitamin B12 on the noise-induced acute change in hepatic glycogen content in rats were investigated. The exposure of rats to 95 dB and 110 dB of noise acutely reduced their hepatic glycogens. Vitamin C (ascorbic acid) and vitamin E (alpha -tocopherol) attenuated the noise-inducedacute reduction in the hepatic glycogen contents. This result suggests that antioxidants could reduce the change via reactive oxygen species. Vitamin B12 (cobalamin) delayed the noiseinduced change, a finding that suggests that vitamin B12 could postpone the acute change via compensating for vitamin B12 deficiency
Complete Assembly of the Genome of an Acidovorax citrulli Strain Reveals a Naturally Occurring Plasmid in This Species
Acidovorax citrulli is the causal agent of bacterial fruit blotch (BFB), a serious threat to cucurbit crop production worldwide. Based on genetic and phenotypic properties, A. citrulli strains are divided into two major groups: group I strains have been generally isolated from melon and other non-watermelon cucurbits, while group II strains are closely associated with watermelon. In a previous study, we reported the genome of the group I model strain, M6. At that time, the M6 genome was sequenced by MiSeq Illumina technology, with reads assembled into 139 contigs. Here, we report the assembly of the M6 genome following sequencing with PacBio technology. This approach not only allowed full assembly of the M6 genome, but it also revealed the occurrence of a ∼53 kb plasmid. The M6 plasmid, named pACM6, was further confirmed by plasmid extraction, Southern-blot analysis of restricted fragments and obtention of M6-derivative cured strains. pACM6 occurs at low copy numbers (average of ∼4.1 ± 1.3 chromosome equivalents) in A. citrulli M6 and contains 63 open reading frames (ORFs), most of which (55.6%) encoding hypothetical proteins. The plasmid contains several genes encoding type IV secretion components, and typical plasmid-borne genes involved in plasmid maintenance, replication and transfer. The plasmid also carries an operon encoding homologs of a Fic-VbhA toxin-antitoxin (TA) module. Transcriptome data from A. citrulli M6 revealed that, under the tested conditions, the genes encoding the components of this TA system are among the highest expressed genes in pACM6. Whether this TA module plays a role in pACM6 maintenance is still to be determined. Leaf infiltration and seed transmission assays revealed that, under tested conditions, the loss of pACM6 did not affect the virulence of A. citrulli M6. We also show that pACM6 or similar plasmids are present in several group I strains, but absent in all tested group II strains of A. citrulli
Electric-field control of magnetism in few-layered van der Waals magnet
Manipulating quantum state via electrostatic gating has been intriguing for
many model systems in nanoelectronics. When it comes to the question of
controlling the electron spins, more specifically, the magnetism of a system,
tuning with electric field has been proven to be elusive. Recently, magnetic
layered semiconductors have attracted much attention due to their emerging new
physical phenomena. However, challenges still remain in the demonstration of a
gate controllable magnetism based on them. Here, we show that, via ionic
gating, strong field effect can be observed in few-layered semiconducting
CrGeTe devices. At different gate doping, micro-area Kerr
measurements in the studied devices demonstrate tunable magnetization loops
below the Curie temperature, which is tentatively attributed to the moment
re-balance in the spin-polarized band structure. Our findings of electric-field
controlled magnetism in van der Waals magnets pave the way for potential
applications in new generation magnetic memory storage, sensors, and
spintronics.Comment: 8 pages, 4 figure
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