A facile and efficient copper-catalyzed domino-double annulation strategy was developed from easily accessible o-aminobenzamides 2-iodoisothiocyanates, which affords a direct pathway for the synthesis of tetracyclic fused 12H-benzo[4,5]thiazolo[2,3-b]quinazolin-12-ones in moderate to good yields without addition ligands, bases, external oxidants. The reaction involves C–N bond cleavage formation C–N/C–S one step with advantages using an inexpensive copper catalyst easy operation. Mechanistic...

Photovoltaic (PV) modules can be damaged by external environment, which significantly reduce power generation efficiency. Electroluminescent (EL) imaging is an economical and widely applied technique for PV module defects detection. The analysis of EL images, however, still labor-consuming. To solve this problem, a deep convolutional neural network (DCNN) proposed to automatically detect classify defects. DCNN performs well on large public dataset with more than 2600 images extracted from...

A palladium-catalyzed intermolecular [2 + 2 2] oxidative coupling–annulation of terminal alkenes and alkynes using copper(II) as the oxidant has been developed through direct C–C bond formation. These reactions provide effective access to multiaryl-substituted benzenes with high regioselectivity in absence any ligands. The features this protocol are broad substrate scope, atom step economy. aggregation-induced emission properties selected products were further investigated. synthesized may...

A photocatalyst/base/metal-free protocol for the synthesis of fully substituted 2-iminothiazolidin-4-one derivatives at room temperature using low-energy light sources and mild reaction conditions is described.

Hematite, Fe(2)O(3), provides in principle a model system for multiferroic (ferromagnetic/ferroelastic) behavior at low levels of strain coupling. The elastic and anelastic associated with magnetic phase transitions natural polycrystalline sample have therefore been studied by resonant ultrasound spectroscopy (RUS) the temperature range from 11 to 1072 K. Small changes softening attenuation are interpreted terms weak but significant coupling symmetry-breaking non-symmetry-breaking strains...

A series of Ag/Pd/m-BiVO4 (monoclinic) bimetallic photocatalytic materials with different loading amounts and mass ratios Ag Pd were synthesized by a hydrothermal method an NaBH4 reduction method. The photocatalyst total 2 wt% Ag-to-Pd ratio 2:1 can selectively oxidize benzyl alcohol to benzaldehyde under visible light irradiation, the conversion rate was up 89.9%, selectivity greater than 99%. on higher those Ag/m-BiVO4 Pd/m-BiVO4. photocatalysts characterized X-ray powder diffraction...

Successful <italic>in situ</italic> and in-step formation of C-dots composited TiO₂ mesocrystals is closely related to the complexation between carbon source Ti ion.

Oxidative etching effect of HNO₃and selective deposition reduced Ag atoms took mainly in the formation AgHMCs.

A photocatalytic three-component cascade reaction of readily available enaminones, hydrazines, and CBr4 for the synthesis bromo-substituted pyrazoles in one pot has been demonstrated. This strategy involves intermolecular C-N/C-Br bond formation represents an efficient approach to construction 4-bromo-substituted with high regioselectivity, broad substrate scope, good functional group tolerance, convenient operation, mild conditions. Mechanistic investigations show that this proceeds via...

Bi(NO3)3·5H2O and (NH4)6Mo7O24·4H2O were used as precursors to synthesize flaky γ-Bi2MoO6 samples by a hydrothermal method, Pt/γ-Bi2MoO6 with different mass fractions prepared an NaBH4 reduction method. Alpha alkylation of benzyl alcohol acetophenone photocatalysts under visible light irradiation was performed, the activity 4 wt % (γ-Bi2MoO6 nitric acid pH = 9, reaction temperature 180 °C) best. The photocatalytic conditions optimized changing various kinds variables, such type catalyst,...

An important aspect of the construction new power system is generation collection system. This paper summarizes architecture a electricity information acquisition system, analyzes its status and domestic overseas typical application scenarios under "double-carbon" targets. It also studies key technologies such as big data processing, container, communication, harmonic measurement, etc., from four dimensions "Cloud, Tube, Edge End" .This focuses on future development direction accurate load...

A simple, mild and low-cost refluxing method was successfully used to synthesize titanate nanofibers nanotubes. Properties of the as-prepared samples were characterized by means TEM XRD techniques. Optimization experimental conditions allowed, respectively, preparation The photocatalytic activities prepared products also investigated. results indicated that nanotubes had no for degradation methyl orange. Calcined at different temperature, increased, accompanying change structures.

The low carbon renewable energy complementary cogeneration system has broad application prospects in the field of regional comprehensive utilization. author proposes a trough solar assisted biomass that utilizes medium to temperature heat conduction oil and drive an absorption pump preheat water heating network, saving steam extraction increasing power output while maintaining constant fuel volume. EBSILON Professional software was used model simulate case unit integrated system, based on...

This paper introduces the system framework composition of electricity consumption information acquisition in new type power system, elaborates key technologies application such as <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$5\mathrm{G}$</tex> and dual-mode communication, container + APP cloud computing under system. It analyzes future typical scenarios, which include household distributed photovoltaic grid-connection, residential energy...

Nanostructured particles of silver chloride (d &#x2248; 10&#x223C;17nm) were prepared in reversed micelles containing the anionic surfactant, AOT or non-ionic Triton x-45(Tx-45). The interaction between and dyes, eosin methylene blue, was investigated. effects charge on surfactants dyes discussed. phenylmercaptotetrazole also examined.