Dendrobium officinale Kimura et Migo is a precious traditional Chinese medicine. Despite D. displaying good salt-tolerance level, the yield and growth of were impaired drastically by increasing soil secondary salinization. The molecular mechanisms plants’ adaptation to salt stress are not well documented. Therefore, in present study, plants treated with 250 mM NaCl. Transcriptome analysis showed that significantly altered various metabolic pathways, including phenylalanine metabolism,...

Abstract Three dimensional (3D) framework structure is one of the most effective ways to achieve uniform zinc deposition and thus inhibit Zn dendrites growth in working metallic anode. A major challenge facing for commonly used 3D zincophilic hosts that layer tends peel off during repeatedly cycling, making it less stable. Herein, first time, a hetero‐superlattice Zn/ZnLi (HS−Zn/ZnLi) anode containing periodic arrangements phase ZnLi at nanoscale, well designed fabricated via electrochemical...

Flavonoids are important bioactive components in Dendrobium officinale, a medicinal orchid. They involved many biological activities, including protecting plants against biotic and abiotic stresses. Research on the key genes related to flavonoid biosynthesis D. officinale is limited. In this study, one of genes, flavanone 3-hydroxylase (F3H), was characterized from officinale. The open reading frame DoF3H 1 134 bp long it encoded 377-amino acid protein. protein showed considerably high...

Abstract As an important component of oil‐immersed transformers, the bushing's internal insulation ageing and dampness after long‐term operation can cause changes in electric temperature fields, seriously threatening its safe operation. This paper tested power frequency permittivity direct current conductivity aged damp oil‐paper samples at different testing temperatures, constructed a dynamic dielectric parameter calculation model. Meanwhile, simulation model was established based on actual...

The liquid cooling system for lithium iron phosphate battery modules usually faces the threat of coolant leakage, which would dramatically affect heat transfer performance, safety, and efficiency energy storage system. Herein, electrochemical sensing technology has been first employed to detect leakage. Specifically, ethanol is selected as additive reagent used main tested substance, sensors indirectly identify leakage by detecting leaked ethanol. In order overcome disadvantages pure SnO2...

Abstract The main part of oil‐immersed power equipment is oil‐paper insulation. At lower ambient temperatures, transformer oil will become viscous. As a result, compared to those at room temperature or operating temperature, the frequency domain dielectric properties insulation low temperatures are drastically different. For evaluating condition electrical equipment, it essential accurately determine their properties. This paper described FDS test, DC conductivity and viscosity which was...

Polymer hydrogels find extensive application in biomedicine, serving specific purposes such as drug delivery, biosensing, bioimaging, cancer therapy, tissue engineering, and others. In response to the growing threat of bacterial infections escalating resistance conventional antibiotics, this research introduces a novel injectable, self-healing antimicrobial hydrogel comprising bioactive aldolized hyaluronic acid (AHA) quaternized chitosan (QCS). This designed QCS/AHA incorporates...

The oil‐impregnated transformer is an important part of the power system. ageing degree internal oil‐paper insulation determines service life transformer. low frequency domain dielectric spectroscopy can effectively characterise insulation. For accurately and quantitatively evaluate aging state transformer, physical process low‐frequency electrode polarisation theoretically analysed in this work. Considering electrode, theoretical expression response equivalent XY model obtained. Meanwhile,...

Because the output voltage of existing high-frequency instrument for defect detection long-scale transmission cable is too low, it necessary to both and high-voltage excitation. A diagnosis location method defects based on pseudotrapezoidal pulse frequency modulation excitation impedance spectrum digital reconstruction proposed. high-capacity system SiC high-speed inverter designed measure up highest 7 MHz. Through reconstruction, with different can be obtained by bandwidth extension within...

For nondestructive assessment of insulation aging in power transformer, dielectric response technology is usually used to evaluate the oil-paper aging. In this paper, a quantitative evaluation method based on Davidson-Cole model proposed. The equivalent Debye parameters transformer are extracted by exponential function fitting. According complex permittivity insulation, fitting algorithm. Under laboratory conditions, accelerated thermal test carried out. relationship between and analyzed....

Abstract The stable operation of transformers is an important guarantee power system security. temperature distribution main insulation different in long‐term operation. difference between the local hottest spot and average oil transformer exceeds 30 K. Therefore, oil‐paper inside will exhibit non‐uniform ageing after At present, frequency domain dielectric response (FDS) technology widely used assessment. However, existing assessment methods are only for overall moisture content...

A MV power cable will exhibit nonlinear impedance when dendritic defects appear. To solve the long time-consuming measurement of pure sinusoidal excitation and realize rapid accurate evaluation insulation conditions, a method based on nonsinusoidal is proposed in this paper. Firstly, test system established, which can obtain high voltage dielectric response frequency range 0.01 Hz–1 kHz. For parameterizing characteristics XLPE under excitation, Hammerstein-Wiener model to parameter...

Copper-based compounds have attracted increasing attention as electrode materials for rechargeable devices, but their poor conductivity and insufficient stability inhibit further development. Herein, an effective method has been proposed to improve the electrochemical properties of copper-based electrodes by coating carbon generating unique micro/nanostructures. The prepared Cu2S/Cu7S4/NC with hierarchical hollow structure possesses excellent performance, attributing composition...

Bi 2 VO 5.5 ‐based materials are well‐known oxide ion conductors owing to their exceptionally high ionic conductivity. However, poor phase and redox stabilities under a reducing atmosphere hinder practical application as electrolytes for solid fuel cells. Here, series of novel quadruple metal‐doped bismuth vanadium system V 1−4 x (CuNiNbTi) O 5.5− δ (0 ≤ 0.1) prepared through traditional state reaction method, aiming enhance the stability atmosphere. The results reveal that...

The slow alloying kinetics between Pb and sodium allows for prolonged retention in the coating, endowing coating with a durable sodiophilicity.

Over a transformer's operational lifetime, the moisture content of its insulation pressboard increases because ageing internal insulation. Thus, this becomes an important index for judging In study, to analyse using dielectric response technique, XY ‐equivalent model analysis method classical transformers is combined with dielectric‐constant algorithm mixed media. addition, new calculating obtained via cyclic iterative comparison calculations based on translation formula, temperature, and...

In order to reduce resistance loss due skin effect and proximity in high-frequency inductive wireless transmission coils, an impedance calculation model is built this paper for analyzing the electromagnetic field of double-layer composite conductor frequency range less than 100 kHz. The analytical formulas on calculating power are obtained. It found that there a critical above which significantly lower pure copper conductor. density within aluminum layer conductor, will increase sharply at...