1,065 research outputs found

    Interplay between Chiral Charge Density Wave and Superconductivity in Kagome Superconductors: A Self-consistent Theoretical Analysis

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    Inspired by the recent discovery of a successive evolutions of electronically ordered states, we present a self-consistent theoretical analysis that treats the interactions responsible for the chiral charge order and superconductivity on an equal footing. It is revealed that the self-consistent theory captures the essential features of the successive temperature evolutions of the electronic states from the high-temperature ``triple-QQ" 2Γ—22\times 2 charge-density-wave state to the nematic charge-density-wave phase, and finally to the low-temperature superconducting state coexisting with the nematic charge density wave. We provide a comprehensive explanation for the temperature evolutions of the charge ordered states and discuss the consequences of the intertwining of the superconductivity with the nematic charge density wave. Our findings not only account for the successive temperature evolutions of the ordered electronic states discovered in experiments but also provide a natural explanation for the two-fold rotational symmetry observed in both the charge-density-wave and superconducting states. Moreover, the intertwining of the superconductivity with the nematic charge density wave order may also be an advisable candidate to reconcile the divergent or seemingly contradictory experimental outcomes regarding the superconducting properties

    Pyrolysis of wild cyanophyta from Chaohu lake for bio-oil

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    To solve the environmental problems caused by the algae, pyrolysis experiment was studied to produce bio-oil with the wild cyanophyta from Chaohu lake for the first time. The results showed that the suitable temperature, carrier gas flow rate, and the smaller particle size were better for liquid products generation, the liquid (bio-oil) yield obtained maximum (66 %) at temperature of 450 oC, carried gas flow rate of 50 mL/min and particle size of less than 0.25 mm. The main ingredients of liquid product from cyanophyta pyrolysis consisted of hydrocarbons, nitrogenous compounds, acids and other organic compounds (such as alcohols, phenols esters and non-identified materials). Acid content was the highest and greatly affected by temperature. The content of hydrocarbons was about 15%

    MiRNA-145 increases therapeutic sensibility to gemcitabine treatment of pancreatic adenocarcinoma cells.

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    Pancreatic adenocarcinoma is one of the most leading causes of cancer-related deaths worldwide. Although recent advances provide various treatment options, pancreatic adenocarcinoma has poor prognosis due to its late diagnosis and ineffective therapeutic multimodality. Gemcitabine is the effective first-line drug in pancreatic adenocarcinoma treatment. However, gemcitabine chemoresistance of pancreatic adenocarcinoma cells has been a major obstacle for limiting its treatment effect. Our study found that p70S6K1 plays an important role in gemcitabine chemoresistence. MiR-145 is a tumor suppressor which directly targets p70S6K1 for inhibiting its expression in pancreatic adenocarcinoma, providing new therapeutic scheme. Our findings revealed a new mechanism underlying gemcitabine chemoresistance in pancreatic adenocarcinoma cells

    RNA-Seq analysis uncovers non-coding small RNA system of Mycobacterium neoaurum in the metabolism of sterols to accumulate steroid intermediates

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    Additional file 6: Figure S2. Negative networks of differentially expressed sRNA candidates and their target genes. (a): Mn-CC/C; (b): Mn-9OHAD/CC; (c) Mn-ADD/CC; and (d): Mn-BNA/CC. Squares represent the upregulated (amaranth) or downregulated sRNA candidates (blue); circles represent the putative upregulated (red) or downregulated (green) target genes; links represent the regulation of sRNAs on their target genes

    Wind Tunnel Tests on Aerodynamic Characteristics of Ice-Coated 4-Bundled Conductors

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    Wind tunnel tests were carried out to obtain the static aerodynamic characteristics of crescent iced 4-bundled conductors with different ice thicknesses, initial ice accretion angles, bundle spaces, and wind attack angles. The test models were made of the actual conductors and have a real rough surface. Test results show that the influence of wake interference on the drag coefficients of leeward subconductors is obvious. The interference angle range is larger than 20Β° and the drag coefficient curves of leeward subconductors have a sudden decrease phenomenon at some certain wind attack angles. The absolute value of the lift and moment coefficient increases with the increase of the ice thickness. In addition, the galloping of the iced subconductor may occur at the angle of wind attack near Β±20Β° and the wake increases the moment coefficient. The variation of initial ice accretion angle has a significant influence on the aerodynamic coefficients. The aerodynamic coefficient curves exhibit a β€œmoving” phenomenon at different initial ice accretion angles. The bundle spaces have a great influence on the moment coefficient of leeward thin ice-coated conductors. With the increase of ice thickness, the bundle spaces generally have little influence on the aerodynamic coefficients

    Full-length enriched multistage cDNA library construction covering floral bud development in Populus tomentosa

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    Flowering involves expression of a suite of genes associated with floral development. The genome of the Chinese white poplar (Populus trichocarpa) was sequenced because of its importance as a model tree for genetic studies as well as being an economically important woody plant. However, information on expressed genes involved in poplar floral bud development is insufficient to allow annotation of genes and use of the genomic information. To isolate and characterize genes involved in flowering of Populus tomentosa, floral bud samples were collected at different developmental stages from floral bud initiation to flower maturity, and full-length enriched cDNA libraries from both male and female floral buds were constructed. The results of titer analysis showed that the titer of the female and male primary libraries were 8.00 Γ— 105 and 7.20 Γ— 105 pfu/ml, respectively, and the titer of the amplified libraries were 2.60 Γ— 108 and 2.56 Γ— 108 pfu/ml, respectively. The combination ratio reached 90% and the insert size was 400 to 2000 bp. The results indicated that cDNA libraries were successfully constructed.Keywords: cDNA library, floral bud, flowering, Populus tomentosaAfrican Journal of Biotechnology Vol. 11(29), pp. 7373-7377, 10 April, 201

    The B0β†’J/ψf0(1370,1500,1710)B^0 \to J/\psi f_0(1370,1500,1710) decays: an opportunity for scalar glueball hunting

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    The scalars f0f_0 closest to 1.5 GeV contain the mesons f0(1370)f_0(1370), f0(1500)f_0(1500) and f0(1710)f_0(1710), and the latter two ones are usually viewed as the potential candidates for the scalar glueballs. In this work, by including the important contributions from the vertex corrections, we study the decays B0β†’J/ψf0B^0 \to J/\psi f_0 within the improved perturbative QCD approach and analyze the possible scalar glueball hunting. Together with the two mixing models, namely, f0(1500)(f0(1710))f_0(1500) (f_0(1710)) being the primary scalar glueball in model I (II), and two classification scenarios, namely, f0f_0 being the qqΛ‰q\bar q excited (ground) states in scenario 1 (2), the branching fractions associated with their ratios for B0β†’J/ψf0B^0 \to J/\psi f_0 are evaluated comprehensively. The predictions with still large uncertainties in the considered two mixing models are roughly consistent with currently limited data, which indicates that both more rich data and more precise predictions are urgently demanded to figure out the scalar glueball clearly in the future. Moreover, several interesting ratios between the branching fractions of B0β†’J/ψf0(β†’Ο€+Ο€βˆ’/K+Kβˆ’)B^0 \to J/\psi f_0(\to \pi^+ \pi^-/K^+ K^-) and B0β†’J/ψρ0/Ο•(β†’Ο€+Ο€βˆ’/K+Kβˆ’)B^0 \to J/\psi \rho^0/\phi (\to \pi^+ \pi^-/ K^+ K^-) that could help us to understand the nature of scalar f0f_0 are defined and predicted theoretically. These ratios should be examined in future experiments.Comment: 28 pages, 3 figures, 6 tables; revised version according to referee's comments; contents improved and references adde
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