Soil organic carbon (SOC) is a key indicator of soil quality and an important component the global cycle. Enhancing SOC through crop rotation promising strategy; yet, underlying mechanisms for accumulation remain unclear. This study aimed to evaluate effects different pasture age, species, irrigation, nitrogen (N) fertilization treatments on content storage in pastureland, analyzing below-ground biomass (BGB) data layers (0–10 cm, 10–20 20–40 40–60 cm) each treatment under three factors...

To explore the feasibility of a novel computer color-matching (CCM) system based on improved back-propagation neural network (BPNN) model by comparing it with traditional visual method.Forty-three metal-ceramic specimens were fabricated proportionally mixing porcelain powders. Thirty-nine randomly selected to train BPNN model, while remaining four used test and calibrate model. A CCM was constructed using MATLAB software. comparison method conducted evaluating color reproduction results 10...

The degradation of black soil cropland has occurred to varying degrees in the northern agropastoral ecotone. Crop–forage rotation is an effective way improve quality, with Medicago being preferred perennial legume. C, N, and P stoichiometric ratios are key indicators quality organic matter composition, reflecting status internal cycles soil. This study aims investigate ecological grassland soils different planting durations, explore regulatory effects nitrogen fertilizer on carbon (SOC),...

Tetramethoxysilane polyester was prepared via hydrosilylation of with acryl-terminated (Si-PET). GO dispersed Si-PET fluids (GO/Si-PET) were cured on a tinplate surface as coatings for room temperature vulcanization an applicable curing time. The mechanical properties, thermal stability, chemical resistance, and anticorrosion properties the assessed. material depend dispersion, best sheets lead to highest flexibility lowest adhesive force tinplate. Electrochemical impedance spectroscopy...

Abstract Mineral oil is the most commonly used liquid insulating material in oil-immersed transformer. Improving fire performance of mineral can not only greatly reduce probability transformer system, but also risk fire. In this paper, flash point tester, cone calorimeter and thermogravimetric analyzer were to study analyze modified samples. The results show that resistance thermal are improved.

This study aimed to explore the chemical changes and discoloration of endodontically treated teeth using spectroradiometric analyses.Ten freshly extracted sound third molars 10 discolored obtained after root canal treatment (RCT) were included in this study. Dentin blocks (3 × 3 1 mm) prepared with an intracoronal bleaching agent. Spectroradiometric evaluations, X-ray photoelectron spectroscopy (XPS), attenuated total reflection Fourier transform infrared (ATR-FTIR) analyses performed before...

Abstract In this work, a three dimensional (3D) conductive material of activated carbon coating Copper-Cobalt Prussian Blue (PB) is synthesized and applied on sodium ion supercapacitors. The proved able to enhance the conductivity, prevent structural collapse during deintercalation, reduce interstitial water in PB crystals as well special hindrance, improve electrochemical performance super capacitors dramatically. It demonstrated that specific capacity 90.4 F g −1 power density 4.3 kW kg...

Fe2O3/TiO2 nanocomposite photocatalysts were synthesized by supercritical fluid combination technique, consisting of sol-gel method and drying. The photocatalytic activity the samples was evaluated degradation acrylic acid. results indicated that catalysts prepared this novel technique showed significant improvement in catalytic compared with pure TiO2 or traditional Both infrared ultraviolet spectrum shift a little to lower wavelength indicating absorption threshold Fe doped into visible...

This paper describes the dose gradient method for assessing relative inhibitory effectiveness of various reverse osmosis membrane scale inhibitors. Five inhibitors were chosen as examples examination method's feasibility in evaluating different The results show that pH, Rej (desalination rate), and ΔKCa (increase cycles concentration) can be used indicators with ΔKCa, being most suitable indicator; sensitivities three are, from greatest to smallest, >> pH > Rej, their standard deviations...

Abstract Insulating oil is a liquid insulating material which acts as an medium and coolant. Mineral the most commonly used in oil-immersed transformer. In this paper, critical characteristics of mineral modified by nanomanterials flame retardants are studied. Modified prepared mixing nanoparticles (ferric oxide, copper, magnesium hydrate) tripropylphenyl phosphate (IPPP) for various volume concentrations with ultrasonic process. Various parameters such flash point, fire breakdown voltage,...

Abstract A P(NMe 2 ) 3 ‐mediated reductive (1+4) annulation reaction of α ‐keto esters with substituted nitroalkenes has been developed, providing a feasible protocol to construct polysubstituted isoxazoline N ‐oxides in moderate excellent yields from readily available starting materials. This originates the characteristic reactivity situ generated Kukhtin‐Ramirez adducts and presumably proceeds through tandem Michael addition‐intramolecular S sequence. To further expand utility this...

This paper utilizes the conductivity method, critical pH method and turbidity measurement to select RO scale inhibitors.Six kinds of inhibitors both at home abroad are used explore feasibility three methods.The results show that, all them can be rapid screening methods for inhibitors; test temperature dosage inhibitor affect results.The total weighted mean value is suggested evaluate inhibitors.And relative standard deviation (RSD) 1.92%, 0.57% 55.23% respectively.

Purpose – The purpose of this study is to explore the influence sulfate reducing bacteria (SRB) on corrosion cupronickel. Design/methodology/approach Tests monitoring change in free potential, linear polarization resistance and electrochemical impedance spectroscopy examination using scanning electron microscope energy spectrum analysis were used investigate behavior cupronickel blank medium media inoculated with SRB alloy. Findings results show that can destroy surface oxide film...