Alok Kumar

Alok Kumar / TNN / May 22, 2026, 00:10 IST

Gaya: Cyber police in Gaya have arrested a man accused of issuing threats to Union minister Jitan Ram Manjhi in a viral social media video, senior superintendent of police (SSP) Sushil Kumar said on Friday. He said the accused, Rajendra Rao alias Sardar, a resident of Maroofganj under Malsalami police station area in Patna district, was apprehended on Thursday night from the Laheri police station area in Nalanda district by a special cyber police team.

Alok Kumar / TNN / May 23, 2026, 18:20 IST

Alok Kumar / TNN / May 24, 2026, 00:06 IST

Alok Kumar / TNN / May 26, 2026, 00:14 IST

Gaya: In a joint raid on Monday morning, district drugs control officials and Kotwali police seized a huge quantity of narcotic and spurious medicines.

As Uttar Pradesh chases its trillion-dollar ambition, the state is betting on manufacturing, infrastructure, regional growth and private investment to power the next phase of economic expansion

The basic area of research is the recognition of metal ions that have an imperative role in the biological and environmental world. Among these metal ions, Copper and Mercury are two key metal ions whose selective and sensitive detection is still the topic of current research. In the present study, we have developed a new hydrazone with a fluorescein moiety as the ideal photophysical partner. This new hydrazone was synthesised via one-step condensation of fluorescein hydrazide with 5-Allyl-3-methoxy salicylaldehyde (FP1). FP1 was fully characterised by employing different physicochemical techniques, and its single-crystal X-ray studies have been carried out. In mixture of ethanol and water (9:1 v/v) FP1 showed colorimetric response for Cu2+, Co2+ and Zn2+. Interestingly, FP1 demonstrated selective behaviour with Cu2+ ions exclusively on changing the solvent combination to acetonitrile and water (8:2 v/v), enabling FP1 to act as a sensor for Cu2+ ions only. Hg2+ ions depicted turn on response in fluorescence in a solution of acetonitrile and water (8:2 v/v) via chelation-enhanced fluorescence. The sensing mechanism favours the spirolactum ring remaining closed on the interaction of FP1 with the metal ions. The limit of detection (LOD) and binding constant are 0.11 ppm, 2.74 × 103 M− 1 and 3.03 ppm, 6.5 × 106 M− 1 for Cu2+ and Hg2+ ions, respectively. Cu2+ and Hg2+ ions binding with FP1 have been confirmed using FT-IR, NMR and HRMS data. FP1 displayed reversible response with EDTA2− ions (4 cycle). A thorough investigation of FP1 was conducted using Hirshfeld surface analysis and two-dimensional fingerprint plots to identify and quantify intermolecular contacts. Complementary topological evaluations involving NCI (Non-Covalent Interaction), QTAIM (Quantum Theory of Atoms in Molecules), ELF (Electron Localization Function) and LOL (Localized Orbital Locator methods) were utilized to dissect the electronic characteristics and non-covalent framework of the molecule. TD-DFT computations further revealed that coordination with transition metals such as Cu2+ and Hg2+ induces notable spectral shifts, particularly toward lower energies, reflecting stronger charge-transfer effects. Alamar blue assay of FP1 on HEK-293(Human embryonic kidney − 293) cell lines exhibited biocompatibility with minimal cytotoxicity and applied for live cell imaging for intracellular sensing of Cu2+ and Hg2+. In a study focusing on latent fingerprint detection with the help of three variants of FP1, researchers observed that the three variants of the compounds exhibited strong adhesion to fingerprint ridges, resulting in well-defined patterns without any unwanted background staining. Graphical abstract

In this study, nickel and titanium alloy (Ti-6Al-4V) of different thickness were joined by resistance spot welding (RSW) at different parametric condition under normal atmospheric situation. Total 17 experiments were carried out by changing the process parameters such as weld current, weld time and electrode force, respectively. The welded joints were then evaluated in terms of tensile shear strength, fracture surface microstructure of the weld zone and resultant microhardness. A combination of 1.5 KA welding current, 2 sec weld duration and 300 N electrode force, respectively, yields the highest shear strength of 800 N. The microhardness of the fusion zone at a welding current of 2200 A was measured to be 280.57 HV, which is quite higher as compared to the base metals. Microstructural investigation revealed that significant deformation occurred in the weld zone during the welding process, which promoted metallurgical bonding and the formation of a sound joint between the dissimilar materials. It was observed that increasing the welding current, weld time and electrode force led to a corresponding increase in both nugget diameter and indentation depth. For validating the experimental results, a ‘Machine Learning’ (ML) based ‘Artificial Neural Network’ (ANN) has been developed. The model’s effectiveness is calculated on the basis of errors, i.e., ‘mean absolute error’ (MAE), ‘mean squared error’ (MSE) and R2 score. The model was found to predict the output with more than 80 percent accuracy.

In the current study a combination was made with zinc solubilizing bacteria (ZSB) and Jeevamrit for soil application under maize crop to check the efficiency of various treatment. The nine treatments under the study were set in a randomized block design (RBD) with three replications. The maximum growth, yield attributes and yield (grain − 48.5 qha−1 and stover − 79.4 qha−1) were obtained with the application of T8 (Recommended dose of fertilizers (RDF)100% + 5.0 kg Zinc ha−1 (ZnSO4·7H2O) + ZSB + Jeevamrit @ 200 l ha−1) which was significantly superior over T1, T2, T3. The soil nutrient status after harvesting of crop was improved under T8 as compared to all other treatments. The availability of DTPA-Zn under treatment T8 was found maximum (1.4 ppm) which was statistically at par over all other treatments. As well as the maximum soil dehydrogenase value (128.4 TPF g soil−1 h−1) was recorded under same treatment. The economic feasibility of treatment T8 was found maximum with a net return of Rs. 72,539 ha−1 and Benefit: Cost ratio 1.73. Thus, the application of 100% RDF with 5.0 kg Zn ha−1 (ZnSO4·7H2O) and ZSB+Jeevamrit@200 l ha−1 was found superior for higher maize yield and return with better soil health.