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Embedded machine vision algorithm development platform is of great significance. Based on the elaboration of visual communication design, this paper further details the design of fractal visual art graphics based on computer-aided algorithms to design edge detection schemes, where edges represent sudden changes in the signal and are able to characterize the rich information of an image. In response to the problems of poor robustness and difficult parameter selection of the currently widely used edge detection algorithms, the platform encapsulates joint edge detection graphic components in a higher-order processing library to achieve the requirements of high-precision detection and to realise enhanced edge detection effects. Finally, the experimental analysis shows that the proposed algorithm has a more accurate detection effect and can meet the user's high-precision detection requirements. [ABSTRACT FROM AUTHOR]

Summary: Autonomous photo‐rechargeable electronic energy storage device has become a new type of solution to the problems of renewable energy fluctuations and storage. The combination of light conversion equipment and energy storage equipment improves the packaging efficiency of the equipment, however how to explore a type of electrode materials for energy collection and storage become a real challenging issue. Here, we try to explore the GeSe nanoparticles as the potential idea electrode for the integrated photo‐rechargeable battery. On the one hand, GeSe nanoparticle electrode shows good Li+ storage performances. At the current density of 0.2 A g−1, its reversible capacity is 670 mAh g−1 after 100 cycles. On the other hand, during the photo‐voltaic measurement, GeSe electrodes could generate a photocurrent that increases by 8 uA/cm2 under the visible light irradiation in aqueous electrolyte. When LiClO4 in polycarbonate solvent is used as the electrolyte, the electrons move in the reverse direction from the GeSe electrode, form reverse current, reduce Li+ to lithium metal, and finally store light energy into chemical energy in a short time. Considering its presenting behaviors in Li+ storage and photon harvesting, our research proposed the possibility for the application of GeSe materials in the integrated photo‐rechargeable batteries. [ABSTRACT FROM AUTHOR]

• Novel CRB vibration model considering contact stiffness and natural frequency characteristics. • The outer raceway spalling fault with varying sizes is simulated in this paper, considering spalling defect extents and load distribution. • This paper showed that the effects of contact stiffness variation on natural frequency characteristics by the statistical distribution of fault feature signals. The modeling of early spalling defects in cylindrical roller bearings (CRB) is a challenging problem in fault diagnosis. Due to the absence of prominent "drop-in" excitation, accurately describing the signal characteristics of the early failure mechanism model for CRBs becomes difficult. In this paper, the failure of cylindrical roller bearings due to spalling caused by fatigue is a frequent occurrence. The previous defect models have been centered on sharp-edge impact between the roller and spalling defects. However, they have not provided an adequate depiction of the variation in contact stiffness caused by roller-fault interaction. In this paper, a novel CRB vibration model that takes into account contact stiffness and natural frequency characteristics is proposed. The model considers both the load redistribution and contact stiffness variation caused by spalling defects. This new model provides a spring-damper system based on contact stiffness between the roller and raceway, enabling an estimation of the CRB system's natural frequency characteristics. The outer raceway spalling fault with varying sizes is simulated in this paper, taking into account spalling defect extents and load distribution. The vibration response of the fault signal model is investigated. The simulation results show that the load and contact stiffness will change as the roller passes through the defect zone. Furthermore, the statistical distribution of fault feature signals demonstrates the effects of contact stiffness variation on natural frequency characteristics. The experiments given in this paper have verified the simulation results of the proposed signal model. [ABSTRACT FROM AUTHOR]

β-MnO 2 and δ-MnO 2 submicrospheres with different crystallographic forms were parallelly synthesized via a facile way using MnCO 3 submicrospheres as manganese source and template. Fine observation enclosed that the β-MnO 2 and δ-MnO 2 submicrospheres were composed of nanoparticles and nanosheets respectively. The performances of these samples as cathode for aqueous zinc ion batteries were investigated: the prepared β-MnO 2 and δ-MnO 2 submicrospheres exhibit an initial capacity of 100 and 126 mAh/g and preserve about 99% and 81% of their original capacity over 100 cycles at a current density of 100 mA/g, respectively. It is observed from the galvanostatic charge/discharge profiles that the majority of excess capacity for δ-MnO 2 than β-MnO 2 is contributed by the first discharge step referred to H+ insertion process, as δ-MnO 2 has lower charge transfer resistance and larger diffusion coefficient than β-MnO 2. We ascribe this to the larger layer space of δ-MnO 2 which would benefit for the easily insertion/extraction of hydronium ions. For contrast, the β-MnO 2 encounters a sluggish transportation of hydronium ion along with the breaking of H–H 2 O bond during ion inserting. Image 1 [ABSTRACT FROM AUTHOR]

Sodium molybdate (Na−Mo−O) wrapped by graphene oxide (GO) composites have been prepared via a simple in‐situ precipitation method at room temperature. The composites are mainly constructed with one dimension (1D) ultra‐long sodium molybdate nanorods, which are wrapped by the flexible GO. The introduction of GO is expected to not merely provide more active sites for lithium‐ions storage, but also improve the charge transfer rate of the electrode. The testing electrochemical performances corroborated the standpoint: The Na−Mo−O/GO composites delivers specific capacities of 718 mAh g−1 after 100 cycles at 100 mA g−1, and 570 mAh g−1 after 500 cycles at a high rate of 500 mA g−1; for comparison, the bare Na−Mo−O nanorod shows a severe capacity decay, which deliver only 332 mAh g−1 after 100 cycles at 100 mA g−1. In view of the cost‐efficient and less time‐consuming in synthesis, and one‐step preparation without further treatment, these Na−Mo−O nanorods/GO composites present potential and prospective anodes for LIBs. [ABSTRACT FROM AUTHOR]

• A method for constructing grayscale images of vibration signals has been proposed. • An unconventional convolutional kernel design method has been proposed. • The validity of the fault diagnosis method in this paper were verified. Rolling bearings are widely used in various industries, including rail transit, aerospace, and wind power generation, playing a critical role. However, bearing failures can lead to serious consequences, impacting equipment operation and even causing safety accidents. Hence, the diagnosis of bearing faults is of utmost importance. However, the variable speed conditions experienced during bearing operation pose significant challenges to fault diagnosis. To overcome the limitations of traditional methods in diagnosing bearing faults under variable speed conditions, this paper proposes a fault diagnosis method based on the gray-level co-occurrence matrix (GLCM) and Dual Channel Convolutional Neural Network (DCCNN). The method introduces a two-dimensional grayscale matrix construction (2D-GMC) technique to extract grayscale texture features for fault diagnosis. Additionally, an unconventional kernel design method, based on grayscale image contrast, is proposed to reduce the complexity associated with traditional square kernels. A new DCCNN architecture is developed accordingly. Furthermore, the transfer learning concept is utilized to train the proposed DCCNN model using fault signals at specific rotational speeds. The method intercepts the variable speed into multi-speed short-time series, then constructs gray image under different speed to realize the rapid fault diagnosis of bearings under variable speed conditions. [ABSTRACT FROM AUTHOR]

In virtue of high capacity and low manufacturing expense, transition metal carbonates (TMCs) have recently arisen enormous research interests as the anode materials for rechargeable lithium ion batteries (LIBs). However, the low electrical conductivity and unstable cycle performance impeded their further development. In this work, Co-B compounds are surface-engineered for the first time onto the mixed single-phase Mn 0.33 Co 0.67 CO 3 microspheres to accelerate the reaction kinetics and suppress the volume fluctuation of the electrodes during Li+ insertion/extraction. Specifically, Co-B nanoflakes not only function as the robust mechanical bridges between Mn 0.33 Co 0.67 CO 3 primary nanoparticles, but also provide extra pathways for electron/charge transport, both of which facilitate the improvement of electrochemical behaviors. Morever, the synergetic effect between Mn 0.33 Co 0.67 CO 3 and Co-B nanoflakes allow a high flux of Li+ across the interface to provide signifcantly boosted Li+ diffusivity. Impressively, the Mn 0.33 Co 0.67 CO 3 @Co-B electrode delivers a high reversible capacity of 806 mA h g−1 over 500 cycles at a high rate of 1.0 A g−1, demonstrating its superior cycling stability. Therefore, surface engineering of borides may be an effective and promising way to improve the electrochemical behaviors of conversion type anodes like TMCs. Image 1 [ABSTRACT FROM AUTHOR]

Abstract Photoresponsive molecules have been widely applied to solar cells and molecular devices. In this manuscript, we report the photoresponsive behaviours of chlorophosphonazo III, a cheap commercially available molecule and previously only used as a colorimetric reagent for earth metals, focusing on the photoisomerization properties in solution or on TiO 2 substrates. Apart from the optomechanical properties, the chlorophosphonazo dye is found to generate a weak but non-negligible photocurrent under the visible light in aqueous environment. Density functional theory calculations are used to understand the structural, electronic and optical properties of the functional molecule. Possible routes to enhance the optoelectronic and optomechanical performance of chlorophosphonazo III toward multiple functions in integrated devices where both of the optomechanical and optoelectronic performances are desired are suggested. Highlights • Photoresponsiveness of chlorophosphonazo III are reported. • It generates a very weak but non-negligible photocurrent. • The interplay between the photoresponsiveness is explained. [ABSTRACT FROM AUTHOR]

Hollow structures of transition metal sulfides, could be promising for energy devices such as hybrid supercapacitors, lithium ion batteries (LIBs) and sodium ion batteries (SIBs). Specially, mixed transition metal sulfides, benefiting from synergetic effects of the multiple metal species, have shown significant advance in the electrochemical performances of LIBs. Whereas, there is no report on exploring them as the electrode materials for sodium ion batteries (SIBs). Herein, we reported the successful fabrication of Zn0.33Co0.67S hollow microspheres with well‐defined voids via a novel sulfidation into ZnCo2‐glycolate solid microspheres and employed them as the electrodes in rechargeable secondary batteries like LIBs and SIBs. Specifically, in LIB testing, the Zn0.33Co0.67S hollow microsphere electrodes delivered a reversible capacity of 540 mA h g–1 at the current density of 500 mA g–1 over 200 cycles. Interestingly, as the pioneering anode among mixed transition sulfides in SIBs, Zn0.33Co0.67S hollow microsphere electrodes still stored Na+ as high as 420 mA h g–1 at 500 mA g–1 over 50 sodiation/desodiation repeating cycles. [ABSTRACT FROM AUTHOR]

[Display omitted] • Superior toluene catalytic oxidation activity was achieved by Cu 1 Ce 3 binary oxides. • Details of Cu-Ce synergistic effect on toluene catalytic oxidation were studied. • The oxidation of benzyl alcohol into benzoic acid was the rate-determining step. • The toluene catalytic oxidation over Cu 1 Ce 3 binary oxides involves a MvK mechanism. A series of Cu-Ce binary oxides were synthesized via a facile co-precipitation method for toluene catalytic oxidation. The physicochemical properties of these samples were characterized by BET, XRD, SEM, TEM, H 2 -TPR, O 2 -TPD, and XPS. It reveals that Cu 1 Ce 3 catalyst possesses a higher specific surface area, stronger Cu-Ce synergistic effect, and better low-temperature reducibility than other samples. Moreover, Cu 1 Ce 3 catalyst exhibited superior toluene oxidation activity with 99.10% toluene removal efficiency and 97.28% CO 2 selectivity at 200 °C, as well as satisfactory stability and moisture resistance. Therefore, Cu 1 Ce 3 catalyst indicates a huge potential for practical applications, such as coal-fired flue gas and spray coating industry. The reaction pathways for toluene catalytic oxidation over the Cu 1 Ce 3 catalyst were further illuminated by in-situ DRIFTs. In the main pathway, toluene molecules were firstly in contact with the interface lattice oxygen, then the abstraction of H atoms occurred on the methyl group, and benzyl alcohol is considered as the primary intermediate, during which the rate-determining step is the oxidation of benzyl alcohol. In the secondary pathway, a little proportion of toluene molecules were directly oxidized into benzoic acid by the chemisorbed oxygen species. In subsequent steps, all the intermediates were converted into CO 2 and H 2 O. At last, it is confirmed that the toluene oxidation over Cu 1 Ce 3 catalyst involves a Mars-van-Krevelen mechanism via this study. [ABSTRACT FROM AUTHOR]

• Mn 3 (PO 4) 2 nanoflakes are firstly explored as the efficient polysulfide inhibitor in Li-S battery. • The Mn 3 (PO 4) 2 /rGO composites can effectively suppress the polysulfide shuttle. • The S@Mn 3 (PO 4) 2 /rGO composites show the enhanced electrochemical performances. The development of Lithium surfur batteries (LSBs) are beset with tenacious issues including the insulating property of the sulfur element and the dissolution of the reaction intermediate products into electrolyte, which result in low S utilization and poor battery cycling performances. In this work, we exploit metal phosphate as the S host for suppressing the sulfur dissolving and accelerating the polysulfide conversion, and firstly construct the S@Mn 3 (PO 4) 2 /rGO composites through an in-situ solution growth followed by S impregnation route. More importantly, the geometric compatibility of Mn 3 (PO 4) 2 nanoflakes and rGO nanosheet endows such S@Mn 3 (PO 4) 2 /rGO composites with high electrical conductivity and excellent mechanical durability. As evidenced by the electrochemical performances in LSB, the S@Mn 3 (PO 4) 2 /rGO cathode shows discharge capacities of 863 mA g−1 at 0.2 C after 100 cycles and 658 mAh g−1 after 470 cycles at 1.0 C with high Coulumbic efficiency of nearly 100%; more impressively, it delivers a high capacity of 407 mAh g−1 ever at 5.0 C rate during rate capability testing. Our research on the construction of S@Mn 3 (PO 4) 2 /rGO composites provides new insight and opportunitie to develop advanced LSBs with highly efficient inhibitors for trapping polysulfides and accelerating their conversion. [ABSTRACT FROM AUTHOR]