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As the key part of maintenance support,the accuracy support of aviation material plays an important role in the inventory management cost reduction,fund allocation optimization and flight safety improvement.In order to support the normal take-off of aircraft,improve the operating income of airline companies and reduce the cost of aviation material support,a material consumption forecast model based on support vector machine regression is proposed to overcome the problem which is difficult to forecast aviation material consumption with small sample size and large variation.Taking the actual consumption data of a domestic civil aircraft as an example,the forecast accuracy of the support vector machine regression model is verified.The results show that the support vector machine regression model is of good adaptability for small sample data,and has higher forecast accuracy than that of the exponential smoothing method.

Maximizing light‐to‐electricity conversion efficiency is a crucial challenge for the practical applications of 2D material photodetectors. However, due to the lack of stable and precise electronic structure control methods for 2D materials, the driving force of photogenerated carriers is insufficient that severely hinders the efficiency of separation and transport. Herein, a gradient‐modulated, stable and precise strain applied strategy for 2D materials is designed and constructed, which results in a significant improvement in the detect efficiency of ZnO/WSe2/graphene van der Waals heterojunction photodetectors. Different from the overall strain of all‐component materials in typical photodetectors, biaxial tensile strain is applied to WSe2 that can be precisely modulated by controlling the height of ZnO nanorods, while the strain is nearly unaffected to ZnO. As the strain modulation increases from 1.3% to 4.0%, the external quantum efficiency (EQE) of the heterojunction increases from 11.4% to 35.3%, representing a threefold increase. Furthermore, with increasing strain, the EQE can reach higher levels. Moreover, the strain‐enhanced conversion efficiency mechanism is elucidated that results from the synergistic effect of the strain‐induced WSe2 exciton convergence and the strain‐increased ZnO/WSe2 interface barrier, which enhances the carrier interface separation efficiency. [ABSTRACT FROM AUTHOR]

Cellular automata (CA) models are effective tools for simulating future urban expansion. With the widespread use of high‐resolution geospatial data for CA simulation, the computational intensity of CA models has increased. Additionally, due to the continuous development of CA modeling research, many scholars have made improvements to the models to enhance their simulation accuracy, resulting in an increasing computational complexity of the model. Consequently, the simulation task based on CA requires vast computing time and memory space. In recent years, deep learning (DL) has experienced rapid development. Many open‐source DL frameworks support graphic processing unit (GPU) parallel computing and provide efficient application programming interfaces (APIs) that can be easily called to handle tasks of interest. In this study, a high‐performance CA model was constructed based on the similarity between the neighborhood effect calculation process of the CA model and the convolutional process in a convolutional neural network (CNN). The convolution function in the DL library is used to calculate the neighborhood effect of the CA model to reduce the time and memory consumption of CA‐based simulation. The experimental results show that compared with the conventional CA model, the execution time of the GPU‐convolution‐CA model proposed in this study has been reduced by more than 98%. [ABSTRACT FROM AUTHOR]

In order to solve the problems of many factors affecting spare parts consumption forecast, complex time correlation, and few actual consumption samples, in view of the difficulty of capturing the gradual dependence of small sample spare parts consumption data in time sequence with existing methods, a spare parts consumption prediction method based on the improved generation adversarial network generative model and the recurrent neural network prediction model is proposed. This method combines the supervised training of autoregressive learning with the unsupervised training of adversarial learning, and further explores the potential static distribution and temporal step-by-step dependence distribution of the spare parts consumption data. Samples that are closer to the real data are generated to achieve the purpose of expanding the sample volume and improving the forecast accuracy of spare parts consumption. Taking the consumption data of a certain type of domestic civil aircraft as an example, the generation performance and forecast accuracy of the model are evaluated by using the dimensionality reduction visualization method and the forecast score. Compared with other methods, the average absolute error of the predicted value presented by the proposed method is reduced by 3%, which verifies the effectiveness of the proposed method in solving the problem of spare parts prediction. [ABSTRACT FROM AUTHOR]

Ionic thermoelectric (i‐TE) materials have attracted much attention due to their ability to generate ionic Seebeck coefficient of tens of millivolts per Kelvin. In this work, we demonstrate that the ionic thermopower can be enhanced by the introduction of multiple ions. The multi‐ionic hydrogel possesses a record thermal‐to‐electrical energy conversion factor (TtoE factor) of 89.6 mV K−1 and an ionic conductivity of 6.8 mS cm−1, which are both better than single salt control hydrogel. Subsequently we build a model to explain thermal diffusion of the ions in multi‐ionic hydrogels. Finally, the possibility of large‐scale integrated applications of multi‐ionic hydrogels is demonstrated. By connecting 7 i‐TEs hydrogels, we obtained an open‐circuit voltage of 1.86 V at ΔT=3 K. Our work provides a new pathway for the design of i‐TEs and low‐grade heat harvesting. [ABSTRACT FROM AUTHOR]

Lamellar Keratoplasty Using Acellular Bioengineering Cornea (BioCorneaVet TM) for the Treatment of Feline Corneal Sequestrum: A Retrospective Study of 62 Eyes (2018-2021) OCT showed that the epithelium and lacrimal film were intact, both the graft and cornea remained stable, the corneal edema subsided, and the transition between donor graft and recipient corneal bed could not be seen at the third month post-surgery (Figure 6C). Furthermore, no involvement of conjunctival tissues that would be used in CCT and conjunctival grafts surgery when we only used BioCorneaVet SP TM sp in keratoplasty would not only protect the cornea and surrounding tissues from secondary damage, but also improve the transparency of the cornea post-surgery. A number of surgical methods and materials are currently available for the treatment of such a disorder, including lamellar keratectomy combined with conjunctival grafts [[1]], porcine small intestinal submucosa (BIOSIS) transplantation [[6]], porcine bladder ACell SP ® sp tissue graft transplantation [[8]], corneo-conjunctival transposition (CCT) [[2], [9]], bovine pericardium graft [[10]], cyanoacrylate adhesive [[11]], amniotic membrane transplantation [[12]], and homograft or xenograft corneal transplantation [[13], [15]]. [Extracted from the article]

Root development is essential for plant survival. The lack of carotenoid biosynthesis in the phytoene desaturase 3 (pds3) mutant results in short primary roots (PRs) and reduced lateral root formation. In this study, we showed that short-term inhibition of PDS by fluridone suppresses PR growth in wild type, but to a lesser extent in auxin mutants of Arabidopsis (Arabidopsis thaliana). Such an inhibition of PDS activity increased endogenous indole-3-acetic acid levels, promoted auxin signaling, and partially complemented the PR growth of an auxin-deficient mutant, the YUCCA 3 5 7 8 9 quadruple mutant (yucQ). The exogenous application of retinaldehyde (retinal), an apocarotenoid derived from β-carotene, complemented the fluridone-induced suppression of root growth, as well as the short roots of the pds3 mutant. Retinal also partially complemented the auxin-induced suppression of root growth. These results suggest that retinal may play a role in regulating root growth by modulating endogenous auxin levels., Competing Interests: Conflict of interest statement. None declared., (© The Author(s) 2024. Published by Oxford University Press on behalf of American Society of Plant Biologists.)

Ionic thermoelectric (i-TE) materials have attracted much attention due to their ability to generate ionic Seebeck coefficient of tens of millivolts per Kelvin. In this work, we demonstrate that the ionic thermopower can be enhanced by the introduction of multiple ions. The multi-ionic hydrogel possesses a record thermal-to-electrical energy conversion factor (TtoE factor) of 89.6 mV K -1 and an ionic conductivity of 6.8 mS cm -1 , which are both better than single salt control hydrogel. Subsequently we build a model to explain thermal diffusion of the ions in multi-ionic hydrogels. Finally, the possibility of large-scale integrated applications of multi-ionic hydrogels is demonstrated. By connecting 7 i-TEs hydrogels, we obtained an open-circuit voltage of 1.86 V at ΔT=3 K. Our work provides a new pathway for the design of i-TEs and low-grade heat harvesting., (© 2022 Wiley-VCH GmbH.)

To retrospectively evaluate the effectiveness and outcome of lamellar keratoplasty using acellular bioengineering cornea (BioCorneaVet TM ) for the treatment of feline corneal sequestrum (FCS). The medical records of cats diagnosed with FCS that underwent lamellar keratoplasty with BioCorneaVet TM between 2018 and 2021 with a minimum of 3 months of follow-up were reviewed. Follow-up examinations were performed weekly for 3 months, and then optical coherence tomography (OCT) examination was performed on select patients at 0, 3, 6, and 12 months post-operatively. A total of 61 cats (30 left eyes and 32 right eyes) were included. The Persian breed was overrepresented, 48/61 (78.69%). Four different thicknesses of acellular bioengineering cornea were used (200, 300, 400, or 450 microns), and the mean graft size was 8.23 mm (range, 5.00-12.00 mm). Minor complications were composed of partial dehiscence, and protrusion of the graft occurred in 7/62 eyes (11.29%). The median postoperative follow-up was 12.00 months (range, 3-41 months). A good visual outcome was achieved in 60/62 eyes (96.77%), and a mild to moderate corneal opacification occurred in 2/62 (3.23%). No recurrence of corneal sequestrum was observed. From the results, lamellar keratoplasty using acellular bioengineering cornea (BioCorneaVet TM ) is an effective treatment for FCS, providing a good tectonic support and natural collagen framework, and resulting in satisfactory visual and cosmetic effects.