10,878 research outputs found
Genetic Diversity of \u3ci\u3eHemarthria compressa\u3c/i\u3e Germplasm in Southwest China Detected by ISSR Markers
Interlayer Coupling of Co/NM/FM(NiFe and Co) Nano-Sandwich Films
AbstractCu/Co, Cu/NiFe, Ta/NiFe bilayers and Co/Cu/Co, Co/Cu/NiFe, Co/Ta/NiFe sandwich films were deposited by a magnetron sputtering method. Magnetic properties were evaluated by VSM and spin valve magnet oresistance was investigated by a four-probe method to study the interlayer coupling of the two magnetic layers. It has been found that the interlayer coupling depended not only on the layer thickness of the nonmagnetic spacer but also on the nature of the spacer. The interlayer coupling was reduced as the spacer layer thickness increased. The result was consistent with those from observations of the magnetic domain for the trilayers by means of Lorentz Electron Microscope. The trilayers with Cu spacer layer have shown a stronger coupling than those with Ta spacer layer
Virtual fractional flow reserve and virtual coronary stent guided percutaneous coronary intervention
The breaking phase transition, muon , dark matter, collider and gravitational wave
Combining the dark matter and muon anomaly, we study the
breaking phase transition, gravitational wave spectra,
and the direct detection at the LHC in an extra gauge
symmetry extension of the standard model. The new fields includes vector-like
leptons (), breaking scalar and gauge
boson , as well as the dark matter candidate and its heavy partner
. A joint explanation of the dark matter relic density and muon
anomaly excludes the region where both and
are much larger than . In the parameter space
accommodating the DM relic density and muon anomaly, the model can
achieve a first order breaking phase transition, whose
strength is sensitive to the parameters of Higgs potential. The corresponding
gravitational wave spectra can reach the sensitivity of U-DECIGO. In addition,
the direct searches at the LHC impose stringent bound on the mass spectra of
the vector-like leptons and dark matter.Comment: 21 pages, 4 figures, 2 table
Exploring the Structural Transformation Mechanism of Chinese and Thailand Silk Fibroin Fibers and Formic-Acid Fabricated Silk Films
Silk fibroin (SF) is a protein polymer derived from insects, which has unique mechanical properties and tunable biodegradation rate due to its variable structures. Here, the variability of structural, thermal, and mechanical properties of two domesticated silk films (Chinese and Thailand B. Mori) regenerated from formic acid solution, as well as their original fibers, were compared and investigated using dynamic mechanical analysis (DMA) and Fourier transform infrared spectrometry (FTIR). Four relaxation events appeared clearly during the temperature region of 25 °C to 280 °C in DMA curves, and their disorder degree (fdis) and glass transition temperature (Tg) were predicted using Group Interaction Modeling (GIM). Compared with Thai (Thailand) regenerated silks, Chin (Chinese) silks possess a lower Tg, higher fdis, and better elasticity and mechanical strength. As the calcium chloride content in the initial processing solvent increases (1%–6%), the Tg of the final SF samples gradually decrease, while their fdis increase. Besides, SF with more non-crystalline structures shows high plasticity. Two α- relaxations in the glass transition region of tan δ curve were identified due to the structural transition of silk protein. These findings provide a new perspective for the design of advanced protein biomaterials with different secondary structures, and facilitate a comprehensive understanding of the structure-property relationship of various biopolymers in the futu
Genetic Diversity and Population Structure of \u3ci\u3eHemarthria compressa\u3c/i\u3e in Southwest China
Fractional matching preclusion for butterfly derived networks
The matching preclusion number of a graph is the minimum number of edges whose deletion results in a graph that has neither perfect matchings nor almost perfect matchings. As a generalization, Liu and Liu [18] recently introduced the concept of fractional matching preclusion number. The fractional matching preclusion number (FMP number) of G, denoted by fmp(G), is the minimum number of edges whose deletion leaves the resulting graph without a fractional perfect matching. The fractional strong matching preclusion number (FSMP number) of G, denoted by fsmp(G), is the minimum number of vertices and edges whose deletion leaves the resulting graph without a fractional perfect matching. In this paper, we study the fractional matching preclusion number and the fractional strong matching preclusion number for butterfly network, augmented butterfly network and enhanced butterfly network
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