Lessons Learned from the Styrene Gas Leak at LG Polymers: Enhancing Industrial Safety, Regulatory Compliance, and Community Resilience!

On May 7, 2020, a styrene gas leak at LG Polymers in Visakhapatnam, India, revealed severe weaknesses in industrial safety, regulatory supervision, and corporate responsibility. In this incident, which occurred in a densely populated urban area, hazardous styrene gas was released, resulting in fatalities, injuries, and environmental contamination. The primary aim of this paper is to comprehensively discuss the styrene gas leak incident that occurred at LG Polymers in Visakhapatnam. It will delve into various aspects of the incident, including its causes, impacts, response measures, and implications. By analyzing the incident in detail, this paper seeks to provide a thorough understanding of the events surrounding the gas leak, its consequences for human health and the environment, and the lessons learned for industrial safety and emergency preparedness

EVALUATION OF ANTIMICROBIAL ACTIVITY OF GREEN-SYNTHESIZED MANGANESE OXIDE NANOPARTICLES AND COMPARATIVE STUDIES WITH CURCUMINANILINE FUNCTIONALIZED NANOFORM

ABSTRACTObjective: Metal oxide nanoparticles are widely attracted researchers due to their potential applications in a variety of fields, especially medicinalimportance. It has been shown that biofunctionalization of metal nanoparticles with the specified bioactive materials produces the significantlyimproved bioactive materials with the essential biological properties and advanced features. According to the reports, manganese oxide nanoparticles(MONPs) possess highly magnetic properties leads to develop for use in research and biomedical applications. In this evaluation, we focused on thesynthesis of MONPs through a green methodology and their antimicrobial activity changes when functionalized with curcuminaniline derived fromturmeric plants.Methods: First, curcumin has been isolated from turmeric plant (BSR-01) to synthesize curcuminaniline biomaterial. On the other hand, manganesenanoparticles are synthesized by the green synthesis method using lemon extract and curcumin. Finally, the synthesized curcuminaniline isfunctionalized with MONPs. The synthesized nanoparticles are characterized by ultraviolet-visible, Fourier transform infrared, scanning electronmicroscope and transmission electron microscopy techniques. The antimicrobial activity of the obtained nonfunctionalized and biofunctionalizednanoforms are tested against some Gram-negative and Gram-positive bacterial strains as well as fungal strains.Results: The morphological studies represented that MONPs are of eclipsed and spherical morphology with size about 50±5 nm and biofunctionalizednanoparticles are of spherical morphology with size about 50±10 nm. The antibacterial and antifungal tests revealed that biofunctionalized MONPsare exhibited significantly higher antimicrobial activity.Conclusion: This investigation clearly demonstrated that MONPs are shown significantly higher biocidal activity when biofunctionalized withmodified curcumin material. This may help in the future medicinal and pharmaceutical industries to develop new inventions.Keywords: Green synthesis, Nanoparticles, Curcumin, Curcuminaniline, Soxhlet extraction, Antimicrobial activity

Facile green synthesis of iron nanoparticles using natural reducer and stabilizer and an evaluation of antimicrobial activity

ABSTRACT In the present work Iron nanoparticles have been synthesized from simple and green synthesis strategy. Natural lemon extract was used as a reducing agent and curcumin acted as a stabilizer. The obtained iron nanoparticles were characterized by UV-Vis, IR, SEM and TEM techniques. TEM images showed that the formed particles are of spherical morphology with appreciable size. The synthesized iron nanoparticles have been screened for their antibacterial and antifungal activities against different microorganisms. The zone of inhibition results were considerably higher andalso exhibited similar activity to standard drugs

Growth and Characterization of Organic Marine Dye Compound: 6-Amino-8α-methoxy-5-methyl-4,7-dioxo-1,1a, 2,4,7,8,8a,8b-octahydroazireno[2',3':3,4] pyrrolo[1,2-α]indol- 8-yl]methyl Carbamate

Single crystals of 6-amino-8α-methoxy-5-methyl-4,7-dioxo-1,1a, 2,4,7,8,8a,8b-octahydroazireno[2',3':3,4]pyrrolo[1,2-α]indol-8-yl]methyl carbamate (Mitomycin), an organic marine dye material has been grown from solution by slow evaporation at ambient temperature. The growth of crystals has been carried out at various pH values and the growth was confirmed at pH 6. The chemical composition of the grown crystals was determined by the FTIR spectra. The crystalline nature and its various planes of reflections were observed by the powder XRD. The grain size is found to be 500 microns using SEM studies and the NLO activity of the grown crystal has been checked by second harmonic generation (SHG) test

Media literacy among Ngee Ann polytechnic students.

This study investigates the media literacy among engineering students of Ngee Ann Polytechnic. The purpose of this study was to determine if the students were able to access the needed information from the various media sources effectively and efficiently, to determine if they were able to evaluate the accessed information and its sources critically, to determine how students incorporate the selected information in their assignments/projects, and to determine if the students understood the social, ethical and legal issues surrounding the use of the accessed information. A total of 135 students from the three (first, second and third) years participated in this study.Master of Science (Information Studies

A Spacetime Discontinuous Galerkin Method for Hyperbolic Conservation Laws

85 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.The basic SDG approximation is a simple Bubnov-Galerkin projection that is not prone to global patterns of spurious oscillations. However, it does require stabilization to eliminate local overshoot and undershoot in the immediate vicinity of shocks and other discontinuous solution features. We address this requirement with a diffusion operator whose intensity is controlled by a shock indicator that measures the relative strength of the high-frequency components of the SDG approximation. Results demonstrating the performance of the SDG method, the h-adaptive refinement scheme, and the diffusion operator for applications of the inviscid Euler equations in one and two spatial dimensions are presented.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD

Simultaneous removal of Cong red and Cr (VI) in aqueous solution by using Mn powder extracted from battery waste solution

Adsorption capacity of manganese powder synthesized from spent battery waste solution was analyzed for simultaneous removal of congo red and hexavalent chromium. Manganese powder was synthesized by heat treatment followed by reaction with sodium borohydride to spent lithium-ion batteries. The removal conditions viz., pH, dosage of manganese and various concentrations of congo red and hexavalent chromium were optimized. The synthesized manganese powder was characterized by X-ray fluorescence spectrometer (XRF), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Further, FESEM was done to observe the difference in surface morphology of the particles with and without treatment. The adsorption performance was studied and the highest adsorption by the zero manganese was 475 mg/g and 125 mg/g for CR and Cr (VI), respectively when different concentrations of the contaminants (400 mg/L CR and 100 mg/L Cr (VI)) was used. Under the optimum conditions, simultaneous removal from 450 mg/L of CR to 250 mg/L and 125 mg/L of Cr (VI) to around 74 mg/L was achieved. Desorption study of the treated zero manganese exhibited that acid treatment (0.1 M HCl) for CR and alkali treatment (0.1 M NaOH) for Cr (VI) as the suitable reagent for desorption.by Deepa Kumaria, Payal Mazumder, Manish Kumarc, Jyoti Prakash Deka and Jaehong Shi