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ABSTRACT CO2 is a significant greenhouse gas, and is considered as a copious renewable carbon reagent. From a synthetic perspective, it can be used as a sustainable and substitute C1 building block because of its nontoxic, nonflammable, and abundant nature. The transformation of a wide range of organic molecules with CO2 into numerous efficient commodities is a defining feature of recent success in this sector. Because of its numerous applications, photocatalysts and visible light‐mediated synthesis of carbamates and cyclic carbonates using CO2 have drawn a lot of interest from researchers. This mini review mainly focusses on the different one‐pot reactions that are proven to be efficacious for chemical fixation of CO2 in producing industry‐based compounds of carbamates and carbonates with the creation of CO, CH, CC, and CN bonds. [ABSTRACT FROM AUTHOR]

In the agricultural sector, crop yield prediction plays an important role as it helps farmers make decisions about the growing season and type of crops to get better yield. The main goal in the agricultural sector is to reduce operating costs and pollution by improving crop yields and quality. This paper proposes an effective method for soil analysis and crop yield prediction for intelligent agriculture. The collected data are preprocessed using missing value interpolation and data normalisation techniques. Feature selection is performed on the preprocessed data using the Aquila‐based adaptive optimisation algorithm, which selects the best trait subset for yield prediction. An improved lightweight gradient‐boosting machine based on the Battle Royale Optimisation technique is used for classification. The performance of the proposed system is evaluated using mean absolute error, root mean square error, R‐squared, mean square error, mean square logarithmic error and mean absolute percentage error, and the proposed system achieved an accuracy of 97%. The proposed system accurately predicts crop yields, improving crop production and quality. [ABSTRACT FROM AUTHOR]

This paper presents the design, implementation, and perfor-mance evaluation of a photovoltaic (PV)-fed drive system with a single-phase induction motor for irrigation applications. The study focuses on a built hardware setup and strategy to achieve objectives, the setup is consist-ing of two 100 W solar panels, a 10 A charge controller, a 12 V battery, a 700 W DC to AC inverter, a step-up transformer 12 V DC to 230 V, and a single-phase pump coupled with a motor of 0.5 HP (0.37 kW). The paper discusses the design considerations, system configuration, control strategy, and the efficiency of the PV-fed motor for irrigation purposes. The findings demonstrate the feasibility and effectiveness of using solar energy to power irrigation systems, showcasing the potential for sustainable and energy-ef-ficient agricultural practices.

One of the important classes of aza-polycyclic compounds is Phenazine systems which are naturally present and synthetically derived. More than 6000 phenazine compounds are recognized; among them, pyran and chromene fused Benzo[α]phenazines have gained special attention due to their fascinating biological properties. In this regard, synthesizing these phenazinle derivatives by multicomponent reactions has gained much attention due to the advantages associated with the process. Hence seeing the contribution of pyran and chromene fused benzo phenazines to the pharmaceutical field, this review highlights the synthesis of these compounds by different catalytic conditions involving the use of nontoxic catalysts and solvents in a multicomponent system. This review evaluates studies reported since 2012 on the multicomponent green synthesis of pyran and chromene fused benzo phenazines. [ABSTRACT FROM AUTHOR]