Barrackpore Rastraguru Surendranath College, also known as Rastraguru Surendranath College, established in 1953, is a general degree college in Barrackpore. The college has received "College with Potential for Excellence" status by University Grant Commission, India. It Is an ISO 9001:2015 certified, fourth cycle NAAC "B++" grade institution having ISO14001:2015 certified environment friendly campuses. The college also received ISO 45001:2018 for health and safety. It offers undergraduate courses in arts, commerce and sciences. There is also postgraduation course in commerce and some of science and arts subject. The college also offer sports, gymnasium, add on courses, job training and campus placement facility. The college have academic and cultural collaboration with Shri Guru Ram Rai PG College, Dehradun, Uttrakhand. The college also offer NCC and NSS for its students. It is affiliated to West Bengal State University.
Pattern formation in mathematical modeling of biology has been a popular topic for a long time. In this study, we focus on possible patterns driven by Turing instability under the prey-predator model of nonlinear reaction-diffusion type in 2D space with the Allee effect and intra-species competition. We investigate pattern formation in predator-prey systems on both continuous media and network frameworks, highlighting how diffusion in continuous space and its Laplacian analogue on networks shape the emergence of Turing patterns. We derive the model from scratch, discuss three separate cases, and analyze the dynamics of both temporal and spatiotemporal dynamics of the models. Under circumstances where the Turing pattern does not exist, we present detailed proofs and use numerical simulation to demonstrate temporal Hopf bifurcation and patchy invasion. On the other hand, if the analytical conditions for the Turing pattern can be satisfied, we display patterns in our numerical simulations and give corresponding biological interpretations at the end.
Background: Tomato (Solanum lycopersicum L.) growth and establishment may be influenced by the balance of calcium and potassium supplied during early development. Aims: At present, Solanum lycopersicum L. is one of the most widely grown vegetables in many countries. The present study was undertaken to determine the combined effect of calcium nitrate and potassium nitrate on tomato seed germination rate, seedling establishment and growth, morphology, and yield. Study Design: Six experimental sets were prepared as nutrient supplements for the field experiment, with different concentrations of calcium nitrate and potassium nitrate. Place and Duration of Study: Department of Botany, Barrackpore Rastraguru Surendranath College, West Bengal, India. The duration of the study was 100 days. Methodology: A 100-day field experiment was conducted on Solanum lycopersicum. Six experimental sets were prepared as nutrient supplements for the field experiment, with different concentrations of calcium nitrate and potassium nitrate. Results: The study observed treatment-related differences associated with the combined concentrations of calcium nitrate and potassium nitrate in seed germination rate, seedling growth, morphology, flowering time, and fruit set in Solanum lycopersicum. The nutrient solution prepared by mixing 255 mg Epsom salts, 12.5 mg iron chelate, 200 mg monoammonium phosphate, 750 mg calcium nitrate, and 900 mg potassium nitrate in 1 litre of distilled water produced the highest overall values for seed germination rate, seedling growth, morphology, flowering time, and fruit set in Solanum lycopersicum. Conclusion: This study concludes that the absence of potassium nitrate in the nutrient solution has the most deleterious effect on tomato growth and yield, followed by the absence of calcium nitrate in the nutrient solution.
Grasping how factors like the Allee effect, resource limits, and developmental delays interact is key to forecasting an ecosystem's long-term persistence and stability. Here, we present and examine a prey-dependent, three-level food-chain model that embeds an Allee effect in the prey, a finite carrying capacity for resource limitation, and a discrete gestation delay in the top predator - capturing real-world phenomena such as survival thresholds at low prey densities, restricted environmental resources, and time lags in predator reproduction. Following nondimensionalization, we carry out a thorough analytical study, establishing positivity and boundedness of solutions, exploring both local and global stability, and performing Hopf and transcritical bifurcation analyses. When delays are included, we derive stability criteria that depend on the length of the gestation period and pinpoint critical delay values that trigger oscillatory behavior. Finally, numerical simulations paired with global sensitivity analysis corroborate our theoretical results. Together, these findings shed light on how the interplay among Allee effects, carrying capacity, and time delays can drive population dynamics toward stability, sustained oscillations, or collapse - insights that are vital for effective biodiversity management and conservation planning.
This study evaluated the heavy metal-induced enhancement of azo dye degradation using three bacterial strains: Acinetobacter sp. SS1, Acinetobacter baumannii SS3, and Bacillus cereus SS2. Under normal monoculture (NM) conditions, dye degradation efficiencies ranged from 22.2% to 26.7%. Under 2.5% heavy metal stress, efficiencies increased to 32.8%-39.0%, indicating a ∼1.5-fold increase. The most significant improvement was observed in stress-adapted consortia, where degradation efficiencies ranged from 52.3% to 59.0%, representing a nearly 2.4-fold increase compared with those in NMs. Fourier-transform infrared analysis revealed more than 10 stress-specific functional groups, including nitriles, amides, and sulfonates, confirming metabolic reprogramming. Auto-aggregation reached a maximum of 41.6% in B. cereus SS2 after 16 h, while molecular docking of Dyp peroxidase (7YZT) and azoreductase (3W77) yielded binding energies of -24.7 kcal mol-1, supporting high enzyme interaction stability. Phytotoxicity assays showed 100% seed germination and enhanced stem height (by ∼45%) in plants treated with stress-consortia-remediated effluent. Two-way analysis of variance yielded statistically significant results across treatment groups (P < 0.01), and principal component analysis showed distinct clustering of stress-consortia performance in the first principal component (PC1 = 2.2693 for C1). These results confirm that microbial consortia preconditioned with metal stress exhibit significantly enhanced bioremediation capabilities in complex dye-contaminated systems.
Micromonospora sp. strain PTRAS2, a gram-positive actinobacterium isolated from mulberry rhizospheric soil in Raiganj, India, has a 7.6 Mb genome (G + C 73.7%). Genome analysis revealed multiple biosynthetic gene clusters for antimicrobial and bioactive compounds, indicating its potential as a source of novel natural products.
