We describe a photocatalyzed transformation for the synthesis of indolo[2,1-<italic>a</italic>]isoquinoline core structure.

Abstract Salt crystallization is one of the most important factors causing weathering in grottoes. Cumulative salts causes damage such as flaking and peeling rocks accelerates processes The accumulated crystalline cause spalling, skinning other accelerate process grotto rock body. It necessary to study existing glutenite This paper took Maijishan Grottoes a case study, Na 2 SO 4 or MgSO solutions were applied specimens subjected different deterioration cycles. patterns two their analyzed...

Abstract Acoustic microfluidic chips, fabricated by combining lithium niobate (LiNbO 3 ) with polydimethylsiloxane (PDMS), practically find applications in biomedicine. However, high‐strength direct bonding of LiNbO substrate PDMS microchannel remains a challenge due to the large mismatching thermal expansion coefficient at interface and lack theory. This paper elaborately reveals mechanisms , demonstrating an irreversible method for PDMS‐LiNbO heterostructures using oxygen plasma...

This paper addresses the online $k$-selection problem with diseconomies of scale (OSDoS), where a seller seeks to maximize social welfare by optimally pricing items for sequentially arriving buyers, accounting increasing marginal production costs. Previous studies have investigated deterministic dynamic mechanisms such settings. However, significant challenges remain, particularly in achieving optimality small or finite inventories and developing effective randomized posted price mechanisms....

We present an image dehazing approach using polarization boundary constraints of transmission (Pol-BCT) in this work. First starting from the performance sensor, we derive calculation methods polarized airlight and infinite by introducing Muller matrix; method dramatically reduces noise dehazing. Then propose degree (DoP) to construct reconstruct atmospheric scattering model (ASM); constructed ASM is more suitable for most scenes. constraint conditions based on refine transmission, which can...

Abstract Temperature and humidity variations in burial stone relics can easily cause water vapor condensation, which is an important factor leading to their deterioration. However, the condensation mechanism evaluation of risk ratings have always been difficult problems protection cultural relics. In this study, Yang Can's tomb was comprehensively investigated through on-site monitoring, indoor experiments software simulations, on basis a physical model established rating assessment method...

Discoloration poses a serious threat to stone cultural heritage, making accurate assessment crucial for its protection and repair. Current detection methods are limited by coverage, slow speed direct contact with heritage. To address these issues, spectral index based on the correlation between reflectance brightness was developed identify discoloration boundaries in Color difference ΔE* then calculated assess deterioration of sandstone heritage such as Leshan Giant Buddha over recent years....

Under the trend of digitization and global carbon reductions, clay construction has increasingly attracted attention due to advantages such as an excellent thermal performance, low emissions, high cost-effectiveness. In this article, in-depth investigation is conducted into potential, challenges, future in development digital manufacturing technologies for architecture, especially 3D printing, robotic construction, prefabrication systems. It revealed through a review that under rapid likely...

Scintillators are widely utilized in high-energy radiation detection view of their high light yield and short fluorescence decay time. However, constrained by current shortcomings, such as complex fabrication procedures, temperature, difficulty the large scale, it is difficult to meet increasing demand for cost-effective, flexible, environment-friendly X-ray using traditional scintillators. Perovskite-related cesium copper halide scintillators have recently received multitudinous research...

Abstract Atmospheric nitrogen deposition may affect the biodeterioration process of stone monuments through direct and indirect pathways, but relevant studies are lacking. Therefore, taking biologically colonized rocks around Leshan Giant Buddha (World Heritage - Mixed Property) as research objects, we studied effects multiple addition levels (0, 9, 18, 36, 72 kg N hm -2 a -1 ; N0, N1; N2 N3; N4) on bacterial community structure soil nutrients surfaces stones with four biocolonization types,...

To create immersive 3D metaverse and digital twin experiences, perception of scenes for consumer electronic products is crucial. Therefore, it vital to generate precise dense depth estimation. Existing technologies can produce decent estimates in small-scale indoor scenes. However, estimation large-scale outdoor omnidirectional indispensable practical applications. Nevertheless, existing fail deliver high-quality results. address these challenges, we propose a novel completion network...

Camera calibration is a necessary step in 3D computer vision order to extract metric information from 2D images. In the camera applying multi-camera localization, it's prerequisite that all cameras, which mounted apart each other, must observe whole object simultaneously. However, inconvenient satisfy using traditional or objects. paper, we propose new contains five points placed shape of '+'. Meanwhile method based on also presented. Our midway between 1-D and 2-D Furthermore, procedure...

During the weathering of stone monuments, salt accumulation and crystallization lead to damage. In this study, we investigated evolution heritage sandstone accumulation, considering porous system humidity conditions. Two types were collected from North Grotto Temple (NGT sandstone, coarse sandstone) Leshan Giant Buddha (LGB fine conduct a test simulating continuous wick effect under different relative We monitored evaporation rate macroscopic surface phenomena during simulation test....

Partial discharge (PD) detection in withstand voltage test is different from that under operation for after-laying cable circuit. For large-scale XLPE circuit of 15km, a special distributed PD in-sync testing system was created the 500kV (1.7Uo/1Hr), HFCT sensors were and installed at every joint termination. To localize where when it just detected between any two neighboring on cable, all local signal process units are made to work synchronously, communication constructed by optical fiber...