A new homogeneous heteropolysaccharide (CMSPA90-1) was purified from bergamot by DEAE sepharose fast flow and Sephadex G-75 columns, shown to have a molecular weight of 17.6 kDa. Its chemical structure elucidated acid hydrolysis methylation analysis, along with high-performance anion-exchange chromatography, Fourier transform infrared spectroscopy coupled gas chromatography-mass spectrometry, NMR spectroscopies, the Congo red test, circular dichroism. CMSPA90-1 consisted pyranoside funanside...

Abstract Analogous to real spins, valleys as carriers of information can play significant roles in physical properties two-dimensional Dirac materials. On the other hand, utilizing external periodic potential is an efficient method manipulate their band structures and transport properties. In this work, we investigate valley dependent optics-like behaviors based on 8- Pmmn borophene superlattice with transfer matrix effective approach. Firstly, it found that structure renormalized, more...

We study valley-dependent anomalous thermomagnetic effects, including the Nernst and Ettingshausen in a graphene monolayer that is subjected to staggered sublattice potential off-resonant circularly polarized light. It found topological phase transition this system can significantly affect signs of conductivity as well thermal conductivity, which provides an alternative method characterize between band insulators. At phase-transition point, pure valley-polarized electric heat currents are...

Silicene undergoes various topological phases under the interplay of intrinsic spin-orbit coupling, perpendicular electric field, and off-resonant light. We propose that abundant can be distinguished by measuring Nernst conductivity even at room temperature, their phase boundaries determined differentiating charge spin conductivities. By modulating light fields, pure polarized, valley spin-valley polarized currents generated. As is zero for linear light, silicene act as an optically...

To show the specific behavior of Dirac fermions in a quasi-periodic structure, we investigate electronic properties deterministic Thue–Morse graphene superlattice. Our main findings include following. (i) Unlike conventional Schrödinger electrons, features such as striking self-similarity and trifurcation transmission spectrum can be manifested only at oblique incidence. (ii) In vicinity usual point, extra points emerge; their locations are dependent merely on second generation structure...

Phase diagram of PLA/PEG determined from rheology and DSC data.

Edge states in quantum spin Hall insulators have important applications low-dissipation devices. However, the breaking of valley degree freedom for finite-sized nanoribbons violates formation gapless edge states. In this work, we investigate topological and transport properties a hybrid silicene nanoribbon, two halves which are different phases modulated by external perpendicular electric fields antiferromagnetic exchange independently. By observing inner-edge states, band insulators,...

Brucellosis is a highly contagious zoonosis caused by Brucella. Brucella can invade and persist inside host cells, which results in chronic infection. We constructed AIR interference overexpression lentiviruses to acquire interference, overexpression, rescue stable expression cell lines. also established melitensis 16M-infected macrophage model, was treated with either the vehicle control or NAC (ROS scavenger N-acetylcysteine (NAC) for 0, 3, 6, 12, 24 h. Confocal laser microscopy,...

We present an investigation on the use of oblique incidence condition to enhance sensitivity guided-mode resonance (GMR) sensors. By adjusting incident angle, enhancement GMR in non-subwavelength regime can be obtained. The measured results show that bulk sensors with period 809 nm climbs 177% or 292% as angle increases from 15° 25° 35°, respectively. same trend is also obtained for grating 994 nm. Simulations based rigorous coupled wave analysis (RCWA) method were performed, and we built a...

Quantum router as a key device in quantum information processing always attracts researchers' attention. This work suggests single-photon (SP) based on one bus-waveguide side coupled to numerous Jaynes-Cummings emitters (JCEs). Each JCE connects with semi-infinite branch waveguide an output channel. Different from the commonly used scheme that JCEs are set tuning regime, we here let them large-detuning regime. change brings about following amazing benefits for SP router. Firstly, number of...

We investigate the Andreev reflection and 0-π transition in graphene-based antiferromagnetic superconducting junctions on SiC substrate, respectively. The differential conductance of is reduced presence a gap induced by antiferromagnet or substrate. Interestingly, although same to one their conductances are absolutely different, which can be used detect antiferromagnetism experiment. Although interaction between substrate cannot show special conductance, bring transition. This breaks up...

The ill-defined Chern number and disappearing topological edge states make it difficult to characterize the properties of a metal. In this work, we investigate abundant phases monolayer graphene, which is sandwiched by asymmetric ferromagnets irradiated off-resonant light. system, there exist some rarely noticed metal phases, are spin-valley polarized metal, spin (TSM), half (TSHM). Particularly, for TSM, subband with up or down topological, but whole state becomes For TSHM, one while other...

Cisplatin (DDP)-based chemotherapy is the first-line regimen for advanced non-small cell lung cancer (NSCLC) patients. However, NSCLC patients may have innate resistance to DDP or develop during treatment. We investigated a natural compound, arteannuin B (Art B), its potential effects on in NSCLC. Art was isolated from Artemisia annua by chromatographic purification and spectral elucidation. The activities of DDP-mediated were examined using vitro vivo assays. observed significant...

Abstract Propagation of ballistic electrons shows various optical-like phenomena. Here, we demonstrate a flexible method to modulate the band structure and manipulate electron beams propagation in 8- Pmmn borophene by an off-resonant linearly polarized light. It is proposed form fully tunable anisotropic dispersion changing polarization direction light experimentally controllable way. Accompanied with it, pseudospin symmetry electronic state collapses from helical into x or y direction,...

Under the coaction of off-resonant circularly polarized light and antiferromagnetic exchange field, epitaxial graphene undergoes various topological phases. Considering self-rotation wave packet Berry curvature driving effect, we investigate spin- valley-dependent anomalous Nernst effect in propose two alternative methods to differentiate Firstly, charge current appears only when field exists, while for achieving spin current, external fields must be applied simultaneously. Due existence a...

We investigate the Andreev reflection across an 8-Pmmn borophene-based superconducting junction irradiated by linearly polarized off-resonant light with polarization along x and y directions, respectively. In regime of interband conversion electron–hole, retro-reflection happens in both cases directions except perpendicular direction junction. intraband specular regardless regimes values differential conductance are different polarization, i.e., anisotropic is generated. addition, nonzero...

Carbon has various allotropes showing rich physical properties. Here, we take net C and W as the research objects. They are all composed of carbonic squares C4, hexagons C6, octagons C8, but with different compositions. Using combination density functional theory calculations non-equilibrium Green’s function method, study significant changes in electronic structures transport behaviors response to external strain. For C, tunable negative differential resistance (NDR) is observed. The NDR...

The effect of covalent element addition on the magnetic and magnetocaloric properties ferrimagnetic Gd60Co20Fe20 amorphous alloy was studied. Particularly, co-doping B Si promoted performance (with a larger entropy change |ΔSM| at higher working temperature) initial alloy. This is possibly ascribed to modified transition behavior. Additionally, broadened with 2.25 J kg−1 K−1 222.5 K under field 0–2 T high relative cooling power 396.0 were obtained for (Gd0.6Co0.2Fe0.2)95B2Si3. These reveal...

The molecular relaxation of the dynamically asymmetric miscible polymer blend poly(styrene-co-acrylonitrile) (SAN)/poly(ε-caprolactone) (PCL) was investigated by differential scanning calorimetry, broadband dielectric spectroscopy, and rheological measurements. times broadness spectrum at both segmental scale chain increase when temperature decreases. two length scales are linearly correlated, terminal is wider than that relaxation. Moreover, it found time with content counterpart same...

We investigate the Andreev reflection in a normal conductor/superconductor junction based on twisted graphene bilayer, which gives rise to feasible crossover between linear and quadratic dispersion relations characterized by Berry phases. It is found that low-energy region, specular shows an obvious enhancement with subgap differential conductance being twice monolayer, demonstrating chirality of single layer; however, tuning external potential, special spinor wave functions 2π phase lead...